(function () {
  // Error "message channel closed" มาจาก extension ของเบราว์เซอร์ ไม่ใช่โค้ดเกม — ลองโหมดไม่ระบุตัวตนหรือปิด extension
  const BASE = typeof appPath === 'function' ? appPath('/Game') : '/Game';
  const SERVER = BASE;
  const MAIN_LOBBY_AI_BTN_ICON = typeof appPath === 'function'
    ? appPath('/Main-Lobby/IMAGE/BTN-AI-ChatBOT.png')
    : '/Main-Lobby/IMAGE/BTN-AI-ChatBOT.png';
  const params = new URLSearchParams(location.search);
  const spaceId = params.get('space');
  const nick = (params.get('nick') || '').trim() || 'ผู้เล่น';
  const DISPLAY_NAME_STORAGE_KEY = 'roomLobbyDisplayName';
  let profileDisplayName = nick;
  const DESIGN_MENU = typeof designMainMenuHref === 'function' ? designMainMenuHref() : '/Main-Menu/';
  if (!spaceId) { location.href = DESIGN_MENU; return; }
  const roomIdValueEl = document.getElementById('room-id-value');
  const displayRoomParam = (params.get('displayRoom') || '').trim();
  if (displayRoomParam) {
    try { localStorage.setItem('lastCreatedSpaceName', displayRoomParam); } catch (e) { /* ignore */ }
    if (roomIdValueEl) roomIdValueEl.textContent = displayRoomParam;
  } else if (roomIdValueEl) {
    roomIdValueEl.textContent = String(spaceId);
  }

  const CREATE_ROOM_URL = typeof appPath === 'function' ? appPath('/Create%20Room/') : '/Create%20Room/';

  function wasPageReload() {
    try {
      const entries = performance.getEntriesByType('navigation');
      if (entries && entries.length && entries[0].type === 'reload') return true;
    } catch (e) { /* ignore */ }
    try {
      if (typeof performance !== 'undefined' && performance.navigation && performance.navigation.type === 1) return true;
    } catch (e2) { /* ignore */ }
    return false;
  }

  /** Lobby หลังคดี — ต้องตรงกับ server POST_CASE_LOBBY_SPACE_ID */
  const POST_CASE_LOBBY_SPACE_ID = 'mn8nx46h';
  const PLAYER_KEY = 'jdPlayerKey';
  /** ตรงกับ character.js / Main-Lobby — composite idle ทิศ down */
  const LOBBY_IDLE_DOWN_LS = 'jdCharLobbyIdleDown:';

  const LOBBY_EVIDENCE_ASSET_BASE = typeof appPath === 'function' ? appPath('/Main-Lobby/IMAGE/See%20evidence') : '/Main-Lobby/IMAGE/See%20evidence';
  const LOBBY_EVIDENCE_RARITY = { common: 'Common', rare: 'Rare', legendary: 'Legendary' };
  /** ข้อมูลตัวอย่างตาม caseId — แก้/โหลดจาก API ได้ภายหลัง */
  const LOBBY_EVIDENCE_CASES = {
    '1': {
      suspects: [
        { linkName: 'สมชาย', cards: [
          { titleTh: 'ก้นบุหรี่เปื้อนลิปสติก', titleEn: 'Lipstick-stained cigarette', body: 'พบใกล้จุดเกิดเหตุ มีคราบลิปสติกสีแดงเข้ม อาจเชื่อมกับ DNA ของผู้ต้องสงสัย', rarity: 'common', stars: 1 },
          { titleTh: 'แว่นตากรอบหัก', titleEn: 'Broken glasses', body: 'กรอบดำแตกหักตามเส้นทางหลบหนี คาดถูกเหยียบขณะวิ่ง', rarity: 'rare', stars: 2 },
          { titleTh: 'ลายนิ้วมือเลือดบนมีด', titleEn: 'Bloody fingerprint on knife', body: 'คราบเลือดปนลายนิ้วมือที่ไม่ตรงกับเหยื่อ — หลักฐานชี้ชัด', rarity: 'legendary', stars: 3 }
        ] },
        { linkName: 'สมหญิง', cards: [
          { titleTh: 'บัตรเข้าลานจอด', titleEn: 'Parking gate log', body: 'เวลาเข้าออกไม่ตรงกับคำให้การเดิม', rarity: 'common', stars: 1 },
          { titleTh: 'ข้อความบนมือถือ', titleEn: 'SMS fragment', body: 'ชวนให้ลบข้อมูลในคลาวด์ก่อนวันเกิดเหตุ', rarity: 'rare', stars: 2 },
          { titleTh: 'กุญแจเข้ารหัส', titleEn: 'Encrypted USB token', body: 'อุปกรณ์รหัสเดียวกับที่พบในเซิร์ฟเวอร์เกม', rarity: 'legendary', stars: 3 }
        ] },
        { linkName: 'วิชัย', cards: [
          { titleTh: 'หูฟังเกมมิ่ง', titleEn: 'Headset mic trace', body: 'ไมค์ติดเสียงแม็กหน้าร้านขณะเจรจา', rarity: 'common', stars: 1 },
          { titleTh: 'สกรีนล็อกพินผิด', titleEn: 'Failed unlock pattern', body: 'มีความพยายามปลดล็อกรูปแบบเดียวกับเหยื่อ', rarity: 'rare', stars: 2 },
          { titleTh: 'ไฟล์คราสเชอร์', titleEn: 'Crashed session log', body: 'บันทึก RCE จากบัญชีที่ผูกกับไอดีของผู้ต้องสงสัย', rarity: 'legendary', stars: 3 }
        ] }
      ]
    },
    '2': {
      suspects: [
        { linkName: 'เปี๊ยก', cards: [
          { titleTh: 'เศษกระจกโชว์เคส', titleEn: 'Display case shard', body: 'ตรงกับรอยแตกที่หน้าร้านอัญมณี', rarity: 'common', stars: 1 },
          { titleTh: 'มือถือหมุดตำแหน่งคลาดเคลื่อน', titleEn: 'GPS mismatch', body: 'แอปแม็ปแสดงว่าอยู่แถวตลาดในช่วงปล้น', rarity: 'rare', stars: 2 },
          { titleTh: 'ถุงมือซิลิโคนใช้ครั้งเดียว', titleEn: 'Disposable silicone glove', body: 'ภายในพบผงเพชรจิ๋วเหมือนในร้าน', rarity: 'legendary', stars: 3 }
        ] },
        { linkName: 'มาลี', cards: [
          { titleTh: 'คูปองรับของ', titleEn: 'Parcel stub', body: 'พัสดุส่งถึงที่พักของผู้ต้องสงสัยในคืนก่อนเหตุ', rarity: 'common', stars: 1 },
          { titleTh: 'กล้องวงจรปิดเบลอ', titleEn: 'Blurred CCTV frame', body: 'เงาร่างสวมหมวกใบเดียวกับที่พบในรถเข็นหลังร้าน', rarity: 'rare', stars: 2 },
          { titleTh: 'แม่แรงเล็ก', titleEn: 'Mini pry bar', body: 'รอยครูดตรงรางกระจกตรงกับเครื่องมือชุดนี้', rarity: 'legendary', stars: 3 }
        ] },
        { linkName: 'เสก', cards: [
          { titleTh: 'ป้ายหมุดร้านค้า', titleEn: 'Geotagged photo', body: 'โพสต์ SNS ก่อน 30 นาทีที่ประตูร้าน', rarity: 'common', stars: 1 },
          { titleTh: 'ใบเสร็จตัดเลเซอร์', titleEn: 'Laser service receipt', body: 'สั่งตัดกระจกความหนาเฉพาะทางก่อนวันปล้น', rarity: 'rare', stars: 2 },
          { titleTh: 'คำสั่งเช่ารถขนของ', titleEn: 'Van rental order', body: 'ทะเบียนตรงกับคันรถหลบที่ลานกว้าง', rarity: 'legendary', stars: 3 }
        ] }
      ]
    },
    '3': {
      suspects: [
        { linkName: 'ธนา', cards: [
          { titleTh: 'ยาหม่องกลิ่นแปลก', titleEn: 'Scented patch', body: 'กลิ่นไม่ตรงกับของในห้อง — อาจติดมาจากที่อื่น', rarity: 'common', stars: 1 },
          { titleTh: 'คีย์การ์ดหมดอายุ', titleEn: 'Expired keycard', body: 'สแกนเข้าตึกหลังเที่ยงคืนได้ทั้งที่ควรถูกระงับ', rarity: 'rare', stars: 2 },
          { titleTh: 'กล้องถ่ายรูปฟิล์ม', titleEn: 'Film camera', body: 'ฟิล์มสุดท้ายเป็นภาพเงาที่ประตูห้องเหยื่อ', rarity: 'legendary', stars: 3 }
        ] },
        { linkName: 'รุ้ง', cards: [
          { titleTh: 'เมนูร้านกาแฟ', titleEn: 'Coffee sleeve note', body: 'มีเบอร์เขียนด้วยมือเหมือนในโน้ตเหยื่อ', rarity: 'common', stars: 1 },
          { titleTh: 'รอยยางรองเท้า', titleEn: 'Mud sole pattern', body: 'ตรงกับรองเท้ากีฬารุ่นหายาก', rarity: 'rare', stars: 2 },
          { titleTh: 'ผ้าขนหนูเปียก', titleEn: 'Damp towel', body: 'มีคราบสารเคมีทำความสะอาดกระเบื้องเฉพาะจุด', rarity: 'legendary', stars: 3 }
        ] },
        { linkName: 'ภูผา', cards: [
          { titleTh: 'เสียงบันทึกสั้น', titleEn: 'Voice memo clip', body: 'ได้ยินเสียงกุญแจตกพื้นก่อนเสียงฉุกเฉิน', rarity: 'common', stars: 1 },
          { titleTh: 'เศษเส้นด้าย', titleEn: 'Fiber snag', body: 'สีเสื้อไม่ตรงกับคนในบ้าน แต่ตรงกับ CCTV ลิฟต์', rarity: 'rare', stars: 2 },
          { titleTh: 'เวลากล้อง CCTV เพี้ยน', titleEn: 'Timestamp drift', body: 'เซิร์ฟเวอร์บันทึกเวลาขาด 7 นาที ช่วงที่เหยื่อหายใจสุดท้าย', rarity: 'legendary', stars: 3 }
        ] }
      ]
    }
  };

  const socketOrigin = (typeof GAME_NODE_ORIGIN !== 'undefined' && GAME_NODE_ORIGIN)
    ? GAME_NODE_ORIGIN
    : (typeof GAME_SERVER !== 'undefined' ? GAME_SERVER : undefined);
  if (typeof io !== 'function') {
    var rlErr = document.createElement('div');
    rlErr.setAttribute('role', 'alert');
    rlErr.style.cssText = 'position:fixed;inset:0;z-index:999999;display:flex;align-items:center;justify-content:center;padding:24px;background:#0a0e1a;color:#e8f4ff;font-family:Kanit,system-ui,sans-serif;text-align:center;line-height:1.6';
    rlErr.innerHTML = '<div><p style="font-size:1.15rem;margin:0 0 12px">โหลด Socket ไม่สำเร็จ (localhost)</p><p style="opacity:.85;margin:0 0 16px">เพิ่มในไฟล์ <code>room-lobby.html</code> บนเครื่องคุณเท่านั้น:<br><code>&lt;script src=&quot;https://srv1361159.hstgr.cloud/Game/dev-local/bootstrap.js&quot;&gt;&lt;/script&gt;</code><br>ดู Game/dev-local/INSTALL-WINDOWS.txt</p><a href="' + (typeof designMainMenuHref === 'function' ? designMainMenuHref() : '/Main-Menu/') + '" style="color:#67e8f9">กลับเมนูหลัก</a></div>';
    (document.body || document.documentElement).appendChild(rlErr);
    throw new Error('socket.io not loaded');
  }
  const socket = io(socketOrigin, { path: '/Game/socket.io' });
  window.__jdGameSocket = socket;
  const roomPlayersHud = document.getElementById('room-players-hud');
  const peersList = document.getElementById('peers-list');
  const readyCheck = document.getElementById('ready-check');
  const btnStart = document.getElementById('btn-start');
  const hostOnly = document.getElementById('host-only');
  const nonHostMsg = document.getElementById('non-host-msg');
  const playMapSelect = document.getElementById('play-map-select');
  const canvas = document.getElementById('lobby-map-canvas');
  const READY_IMG_IDLE = SERVER + '/img/btn-ready-idle.png?v=1';
  const READY_IMG_ACTIVE = SERVER + '/img/btn-ready-active.png?v=1';

  let mapData = null;
  let quizModeActive = false;
  let quizPhaseLocal = null;
  let quizPhaseEndsAt = 0;
  let quizPlayerLocal = { cannotTrue: false, cannotFalse: false, eliminated: false, score: 0 };
  let quizTimerInterval = null;
  let lastQuizQuestionText = '';
  let lastQuizScores = {};
  /** ผู้เล่นที่ตอบผิดแล้ว — วาดแบบ ghost ให้คนอื่นเห็น (สถานะของตัวเองมาจาก quizPlayerLocal) */
  let quizPeersLocked = {};
  let lastQuizQIdx = 0;
  let lastQuizQTotal = 0;
  /** mapId ฉากปัจจุบันจากเซิร์ฟ (เช่น mn8nx46h = LobbyB) — ใช้ตรวจ UI LobbyB ให้แม่น */
  let clientLobbyMapId = null;
  let hostId = null;
  let spaceName = '';
  let maxPlayers = 10;
  let lobbyBotSlotCount = 0;
  /** จำนวนช่องรวมในโถง (คน + บอท) — ตรง server LOBBY_SLOT_TOTAL */
  const LOBBY_SLOT_TOTAL = 6;
  const LOBBY_BOT_PREFIX = '__lobby_bot_';
  const lobbyBots = new Map();
  let suspectPickOverlayOpen = false;
  let suspectSelectedIndex = 0;
  /** ตรงกับเซิร์ฟ — เฟสเลือกผู้ต้องสงสัยยังไม่จบ (ปิด overlay แล้วยังเปิดได้จากปุ่มโถง) */
  let serverSuspectPhaseActive = false;
  /** มินิเกม 3 แบบที่สุ่มแล้ว — ล็อกกับการ์ด 0–2 จนกว่าสร้างห้องใหม่ */
  let suspectCardMinigames = [];
  /** หลักฐาน (ติกถูก) ที่เก็บได้ต่อผู้ต้องสงสัย 0–2 (เล่นมินิเกมจบ +1 ต่อช่อง สูงสุด 3) */
  let suspectProgress = [0, 0, 0];
  /** ขั้นพิจารณาคดี: null | 'voting' | 'revealed' */
  let trialMode = null;
  let myTrialVote = null;
  let trialVoteCounts = [0, 0, 0];
  let mapBackgroundImg = null;
  let hostIconImg = null;
  const peers = new Map();
  /** รองรับ x/y string จาก Socket — ไม่งั้นตำแหน่งจากสุ่มจุดเกิดจะถูกทิ้ง */
  function normalizeLobbyPeerFromServer(p, mapRef) {
    const sp = mapRef && mapRef.spawn;
    const sx = Number(sp && sp.x);
    const sy = Number(sp && sp.y);
    const fx = Number.isFinite(sx) ? sx : 1;
    const fy = Number.isFinite(sy) ? sy : 1;
    const x = Number(p.x);
    const y = Number(p.y);
    const nx = Number.isFinite(x) ? x : fx;
    const ny = Number.isFinite(y) ? y : fy;
    return { ...p, x: nx, y: ny, tx: nx, ty: ny };
  }
  const characterImages = {};

  /** ลำดับโหลดรูปยืนเฉย/เดิน ต่อทิศ — idle ก่อน (ตรงกับเซิร์ฟ upload) */
  function characterSpriteUrlCandidates(id, dir) {
    const d = dir || 'down';
    const enc = encodeURIComponent(id);
    const q = '?ch=' + enc;
    const base = SERVER + '/img/characters/' + enc + '_' + d;
    return [
      base + '_idle.png' + q,
      base + '_idle_0.png' + q,
      base + '.png' + q,
      base + '_0.png' + q,
    ];
  }

  function createDefaultAvatarImg() {
    const c = document.createElement('canvas');
    c.width = 64; c.height = 64;
    const ctx = c.getContext('2d');
    ctx.fillStyle = '#7aa2f7';
    ctx.beginPath();
    ctx.arc(32, 22, 14, 0, Math.PI * 2);
    ctx.fill();
    ctx.fillStyle = '#9ece6a';
    ctx.beginPath();
    ctx.arc(32, 48, 18, 0, Math.PI * 2);
    ctx.fill();
    ctx.fillStyle = '#1a1b26';
    ctx.beginPath();
    ctx.arc(28, 20, 3, 0, Math.PI * 2);
    ctx.arc(36, 20, 3, 0, Math.PI * 2);
    ctx.fill();
    const img = new Image();
    img.src = c.toDataURL('image/png');
    return img;
  }
  const defaultAvatarImg = createDefaultAvatarImg();
  const characterAnimations = {};
  const CHARACTER_ANIM_FRAMES = 4;
  const CHARACTER_ANIM_FRAME_MS = 200;

  function walkAnimPhaseIndex(now, isWalking) {
    const t = isWalking ? (typeof now === 'number' ? now : Date.now()) : 0;
    return Math.floor(t / CHARACTER_ANIM_FRAME_MS) % CHARACTER_ANIM_FRAMES;
  }

  function pickLoadedWalkFrameIndex(anim, phase) {
    if (!anim || !anim.frames || !anim.frames.length) return -1;
    const maxK = Math.min(phase, anim.frames.length - 1, CHARACTER_ANIM_FRAMES - 1);
    for (var k = maxK; k >= 0; k--) {
      var f = anim.frames[k];
      if (f && f.complete && f.naturalWidth) return k;
    }
    return -1;
  }

  function getCharacterImg(id, direction) {
    if (!id) return null;
    const dir = direction || 'down';
    const key = id + '_' + dir;
    if (characterImages[key]) return characterImages[key];
    const img = new Image();
    const urls = characterSpriteUrlCandidates(id, dir);
    let uidx = 0;
    img.onerror = function () {
      uidx += 1;
      if (uidx >= urls.length) {
        img.onerror = null;
        return;
      }
      img.src = urls[uidx];
    };
    img.src = urls[0];
    characterImages[key] = img;
    return img;
  }

  function getCharacterFrame(id, direction, now, isWalking) {
    if (!id) return null;
    const dir = direction || 'down';
    const key = id + '_' + dir;
    let anim = characterAnimations[key];
    if (!anim) {
      anim = { frames: [], fallback: null };
      characterAnimations[key] = anim;
      anim.fallback = getCharacterImg(id, dir);
      var q = '?ch=' + encodeURIComponent(id);
      var tryIdleWalk = characterSpriteUrlCandidates(id, dir);
      var frame0 = new Image();
      frame0.onload = function () {
        for (var i = 1; i < CHARACTER_ANIM_FRAMES; i++) {
          var img = new Image();
          img.src = SERVER + '/img/characters/' + encodeURIComponent(id) + '_' + dir + '_' + i + '.png' + q;
          anim.frames.push(img);
        }
        if (mapData && canvas) drawLobbyMap();
      };
      var tix = 0;
      frame0.onerror = function () {
        tix += 1;
        if (tix >= tryIdleWalk.length) {
          if (mapData && canvas) drawLobbyMap();
          return;
        }
        frame0.src = tryIdleWalk[tix];
      };
      frame0.src = tryIdleWalk[0];
      anim.frames.push(frame0);
    }
    var phase = walkAnimPhaseIndex(now, isWalking);
    // ยืนนิ่ง → ใช้รูป idle (_idle.png) ก่อน
    if (!isWalking && anim.fallback && anim.fallback.complete && anim.fallback.naturalWidth) return anim.fallback;
    var fi = pickLoadedWalkFrameIndex(anim, phase);
    if (fi >= 0) return anim.frames[fi];
    const fb = anim.fallback;
    if (fb && fb.complete && fb.naturalWidth) return fb;
    return null;
  }

  function getAvatarImg(characterId, direction, now, isWalking) {
    const img = characterId ? getCharacterFrame(characterId, direction, now, isWalking) : null;
    if (img) return img;
    return defaultAvatarImg;
  }

  /* ===== Phase 3a: tint ตัวละคร (composite layer + ทาสี) — ตอนนี้ใช้กับตัวผู้เล่นเอง ===== */
  var RL_CUSTOMIZE_ASSET = SERVER + '/img/03-5-Customize/';
  var RL_LAYER_NAMES = ['shadow', 'bodyColor', 'bodyStroke', 'headColor', 'headStroke', 'hairColor', 'hairStroke', 'face'];
  var myTintTheme = null;
  var myTintSkin = null;
  var rlSwatchCache = {};
  var tintedCharCache = {};
  var rlLayerMissing = {};

  function rlLoadImg(src, cb) {
    if (rlLayerMissing[src]) { cb(null); return; } // เคย 404 แล้ว ไม่ขอซ้ำ (กัน console spam)
    var img = new Image();
    img.onload = function () { cb(img); };
    img.onerror = function () { rlLayerMissing[src] = true; cb(null); };
    img.src = src;
  }

  function rlHexToRgbCss(hex) {
    var h = String(hex || '').replace('#', '').trim();
    if (h.length === 3) h = h[0] + h[0] + h[1] + h[1] + h[2] + h[2];
    var n = parseInt(h, 16);
    if (!Number.isFinite(n)) return null;
    return 'rgb(' + ((n >> 16) & 255) + ',' + ((n >> 8) & 255) + ',' + (n & 255) + ')';
  }

  function rlSampleSwatch(group, idx, cb) {
    var key = group + '-' + idx;
    if (rlSwatchCache[key]) { cb(rlSwatchCache[key]); return; }
    var hexArr = group === 'color' ? ROOM_CZ_THEME_HEX : ROOM_CZ_SKIN_HEX;
    var hi = parseInt(idx, 10) - 1;
    if (hexArr && hexArr[hi]) {
      var fromHex = rlHexToRgbCss(hexArr[hi]);
      if (fromHex) { rlSwatchCache[key] = fromHex; cb(fromHex); return; }
    }
    rlLoadImg(RL_CUSTOMIZE_ASSET + (group === 'color' ? 'color-' : 'skin-tone-') + idx + '.png', function (img) {
      if (!img || !img.naturalWidth) { cb(null); return; }
      try {
        var c = document.createElement('canvas'); c.width = 1; c.height = 1;
        var x = c.getContext('2d');
        x.drawImage(img, 0, 0, img.naturalWidth, img.naturalHeight, 0, 0, 1, 1);
        var d = x.getImageData(0, 0, 1, 1).data;
        var rgb = 'rgb(' + d[0] + ',' + d[1] + ',' + d[2] + ')';
        rlSwatchCache[key] = rgb;
        cb(rgb);
      } catch (e) { cb(null); }
    });
  }

  var LOBBY_PLAYER_TINT_KEY = 'justiceLobbyPlayerTint';

  function rgbCssToHexLobby(rgb) {
    if (!rgb) return '';
    var s = String(rgb).trim();
    if (s.charAt(0) === '#') return s;
    var m = s.match(/rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/i);
    if (!m) return '';
    return '#' + [m[1], m[2], m[3]].map(function (n) {
      var v = Math.max(0, Math.min(255, parseInt(n, 10)));
      return v.toString(16).padStart(2, '0');
    }).join('');
  }

  function lobbyBotTintsStorageKey() {
    return 'justiceLobbyBotTints:' + (spaceId || 'default');
  }

  function loadLobbyBotTintsMap() {
    try {
      var raw = sessionStorage.getItem(lobbyBotTintsStorageKey());
      return raw ? JSON.parse(raw) : {};
    } catch (e) {
      return {};
    }
  }

  function saveLobbyBotTint(botId, bot) {
    if (!botId || !bot) return;
    var map = loadLobbyBotTintsMap();
    map[String(botId)] = {
      colorTheme: bot.colorTheme || '',
      colorSkin: bot.colorSkin || '',
    };
    try { sessionStorage.setItem(lobbyBotTintsStorageKey(), JSON.stringify(map)); } catch (e) { /* ignore */ }
  }

  function applySavedLobbyBotColors(botId, bot) {
    var saved = loadLobbyBotTintsMap()[String(botId)];
    if (!saved) return false;
    if (saved.colorTheme) bot.colorTheme = saved.colorTheme;
    if (saved.colorSkin) bot.colorSkin = saved.colorSkin;
    return !!(saved.colorTheme || saved.colorSkin);
  }

  function persistLobbyPlayerTintJson() {
    if (!myTintTheme && !myTintSkin) return;
    var bodyHex = rgbCssToHexLobby(myTintTheme);
    var headHex = rgbCssToHexLobby(myTintSkin);
    try {
      localStorage.setItem(LOBBY_PLAYER_TINT_KEY, JSON.stringify({
        themeRgb: myTintTheme || '',
        skinRgb: myTintSkin || '',
        head: headHex || '',
        hair: bodyHex || '',
        body: bodyHex || '',
        savedAt: Date.now(),
      }));
    } catch (e) { /* ignore */ }
  }

  function rlResolveMyColors(cb) {
    var c = '', s = '';
    try { c = localStorage.getItem('lobbyThemeColor') || ''; s = localStorage.getItem('lobbySkinTone') || ''; } catch (e) {}
    var need = 0, done = false;
    function go() {
      if (done) return;
      if (need <= 0) {
        done = true;
        persistLobbyPlayerTintJson();
        if (cb) cb();
      }
    }
    if (c) { need++; rlSampleSwatch('color', c, function (rgb) { myTintTheme = rgb; if (mapData && canvas) drawLobbyMap(); need--; go(); }); }
    if (s) { need++; rlSampleSwatch('skin', s, function (rgb) { myTintSkin = rgb; if (mapData && canvas) drawLobbyMap(); need--; go(); }); }
    if (need === 0) go();
  }

  /* ===== Preload + Loading overlay ก่อนเข้า room-lobby (กันสีตัวละครกระตุก) ===== */
  var roomJoinReady = false, roomPreloadReady = false, roomLoadingHidden = false;

  function injectRoomLoadingOverlay() {
    if (document.getElementById('room-loading-overlay')) return;
    var style = document.createElement('style');
    style.textContent = '#room-loading-overlay{position:fixed;inset:0;z-index:99999;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;background:radial-gradient(circle at 50% 38%, #0b1430, #060818);color:#cfe9ff;font-family:Kanit,Sarabun,system-ui,sans-serif;transition:opacity .45s ease}#room-loading-overlay.is-hidden{opacity:0;pointer-events:none}#room-loading-spinner{width:56px;height:56px;border:5px solid rgba(34,211,238,.22);border-top-color:#22d3ee;border-radius:50%;animation:rlspin 1s linear infinite}@keyframes rlspin{to{transform:rotate(360deg)}}#room-loading-overlay .rl-txt{font-size:1.1rem;letter-spacing:.04em;opacity:.9}';
    document.head.appendChild(style);
    var ov = document.createElement('div');
    ov.id = 'room-loading-overlay';
    ov.innerHTML = '<div id="room-loading-spinner"></div><div class="rl-txt">กำลังโหลดตัวละคร…</div>';
    (document.body || document.documentElement).appendChild(ov);
  }

  function hideRoomLoading() {
    if (roomLoadingHidden) return;
    roomLoadingHidden = true;
    var ov = document.getElementById('room-loading-overlay');
    if (ov) { ov.classList.add('is-hidden'); setTimeout(function () { if (ov.parentNode) ov.parentNode.removeChild(ov); }, 600); }
  }

  function maybeHideRoomLoading() { if (roomJoinReady && roomPreloadReady) hideRoomLoading(); }

  function preloadLobbyTintedCharacter(id, theme, skin, cb) {
    if (!id || (!theme && !skin)) { if (cb) cb(); return; }
    var dirs = ['down', 'up', 'left', 'right'];
    var suffixes = ['idle', '0', '1', '2', '3'];
    var total = dirs.length * suffixes.length;
    var doneCount = 0;
    var finished = false;
    function one() {
      doneCount++;
      if (!finished && doneCount >= total) {
        finished = true;
        if (cb) cb();
      }
    }
    setTimeout(function () {
      if (!finished) {
        finished = true;
        if (cb) cb();
      }
    }, 6000);
    dirs.forEach(function (dir) {
      var ckey = id + '|' + (theme || '') + '|' + (skin || '') + '|' + dir;
      var anim = tintedCharCache[ckey] || (tintedCharCache[ckey] = { frames: [], fallback: null });
      suffixes.forEach(function (suf) {
        rlBuildTintedFrame(id, dir, suf, theme, skin, function (img) {
          if (img) {
            if (suf === 'idle') anim.fallback = img;
            else anim.frames[parseInt(suf, 10)] = img;
          }
          one();
        });
      });
    });
  }

  function preloadMyTintedCharacter(cb) {
    preloadLobbyTintedCharacter(getStoredCharacterId(), myTintTheme, myTintSkin, cb);
  }

  /** อุ่น tint บอท + peer ที่มีสี — กันกระตุกตอนบอทเดิน/idle ครั้งแรก */
  function preloadAllLobbyTintedOccupants(cb) {
    var pending = 1;
    function doneOne() {
      pending--;
      if (pending <= 0 && cb) cb();
    }
    var pid = getStoredCharacterId();
    if (pid && (myTintTheme || myTintSkin)) {
      pending++;
      preloadLobbyTintedCharacter(pid, myTintTheme, myTintSkin, doneOne);
    }
    lobbyBots.forEach(function (b) {
      if (!b || !b.characterId) return;
      if (!b.colorTheme && !b.colorSkin) return;
      pending++;
      preloadLobbyTintedCharacter(b.characterId, b.colorTheme, b.colorSkin, doneOne);
    });
    peers.forEach(function (p) {
      if (!p || !p.characterId) return;
      if (!p.colorTheme && !p.colorSkin) return;
      pending++;
      preloadLobbyTintedCharacter(p.characterId, p.colorTheme, p.colorSkin, doneOne);
    });
    doneOne();
  }

  function readLobbyCharImgSize(img) {
    if (!img) return { iw: 0, ih: 0 };
    if (img.tagName === 'CANVAS' && img.width > 0 && img.height > 0) {
      return { iw: img.width, ih: img.height };
    }
    if (img.complete && img.naturalWidth > 0 && img.naturalHeight > 0) {
      return { iw: img.naturalWidth, ih: img.naturalHeight };
    }
    return { iw: 0, ih: 0 };
  }

  /* ===== ห้องแต่งตัว (Customize) ในห้อง room-lobby — ปุ่มล่างซ้าย + popup + tint สด ===== */
  /** ธีมสี 8 ช่อง — ตรงกับ customize-popup / play.js */
  var ROOM_CZ_THEME_HEX = [
    '#d72520', '#ef8508', '#efe237', '#5bb443',
    '#2585cb', '#3f4ead', '#b53fd6', '#fec1fe'
  ];
  /** สีผิว 3 ช่อง */
  var ROOM_CZ_SKIN_HEX = ['#eaa78a', '#fbd5c4', '#fae9e1'];
  /** จุด "ห้องแต่งตัว" ในฉาก — ตั้งจาก mapData.customizeSpot (วางใน editor) ถ้าไม่มี = null = ไม่แสดง */
  var ROOM_CZ_SPOT = null;
  var roomCzIcon = new Image();
  roomCzIcon.src = '/Main-Lobby/IMAGE/btn-cloth.png';
  roomCzIcon.onload = function () { if (typeof mapData !== 'undefined' && mapData && canvas) drawLobbyMap(); };

  /** จุด "ตั้งค่าโฮสต์" — mapData.hostConsoleSpot (วางใน editor) */
  var ROOM_HC_SPOT = null;
  var roomHcIcon = new Image();
  roomHcIcon.src = SERVER + '/img/btn-setting-host.png';
  roomHcIcon.onload = function () { if (typeof mapData !== 'undefined' && mapData && canvas) drawLobbyMap(); };

  function markRoomCzInteractiveCell() {
    if (!mapData) return;
    if (mapData.customizeSpot && Number.isFinite(Number(mapData.customizeSpot.x)) && Number.isFinite(Number(mapData.customizeSpot.y))) {
      ROOM_CZ_SPOT = { x: Math.floor(Number(mapData.customizeSpot.x)), y: Math.floor(Number(mapData.customizeSpot.y)) };
    } else {
      ROOM_CZ_SPOT = null; // ไม่มีจุดแต่งตัวใน map นี้ → ไม่แสดง icon / ไม่มี interact
      return;
    }
    var w = mapData.width || 20, h = mapData.height || 15;
    if (ROOM_CZ_SPOT.x < 0 || ROOM_CZ_SPOT.x >= w || ROOM_CZ_SPOT.y < 0 || ROOM_CZ_SPOT.y >= h) { ROOM_CZ_SPOT = null; return; }
    if (!Array.isArray(mapData.interactive)) mapData.interactive = [];
    for (var y = 0; y < h; y++) { if (!Array.isArray(mapData.interactive[y])) mapData.interactive[y] = []; }
    mapData.interactive[ROOM_CZ_SPOT.y][ROOM_CZ_SPOT.x] = 1;
  }

  function markHostHcInteractiveCell() {
    if (!mapData) return;
    if (mapData.hostConsoleSpot && Number.isFinite(Number(mapData.hostConsoleSpot.x)) && Number.isFinite(Number(mapData.hostConsoleSpot.y))) {
      ROOM_HC_SPOT = { x: Math.floor(Number(mapData.hostConsoleSpot.x)), y: Math.floor(Number(mapData.hostConsoleSpot.y)) };
    } else {
      ROOM_HC_SPOT = null;
      return;
    }
    var w = mapData.width || 20, h = mapData.height || 15;
    if (ROOM_HC_SPOT.x < 0 || ROOM_HC_SPOT.x >= w || ROOM_HC_SPOT.y < 0 || ROOM_HC_SPOT.y >= h) { ROOM_HC_SPOT = null; return; }
    if (!Array.isArray(mapData.interactive)) mapData.interactive = [];
    for (var y = 0; y < h; y++) { if (!Array.isArray(mapData.interactive[y])) mapData.interactive[y] = []; }
    mapData.interactive[ROOM_HC_SPOT.y][ROOM_HC_SPOT.x] = 1;
  }

  function isRoomCzInteractTarget(t) {
    return !!(t && ROOM_CZ_SPOT && t.x === ROOM_CZ_SPOT.x && t.y === ROOM_CZ_SPOT.y);
  }

  function isNearRoomCzSpot(me) {
    if (!me || !ROOM_CZ_SPOT || typeof me.x !== 'number' || typeof me.y !== 'number') return false;
    var dx = me.x - ROOM_CZ_SPOT.x, dy = me.y - ROOM_CZ_SPOT.y;
    return (dx * dx + dy * dy) <= 2.25; // ภายในรัศมี ~1.5 ช่อง (ยืนใกล้ตู้ก็กด F ได้)
  }

  function isHostHcInteractTarget(t) {
    return !!(t && ROOM_HC_SPOT && t.x === ROOM_HC_SPOT.x && t.y === ROOM_HC_SPOT.y);
  }

  function isNearHostHcSpot(me) {
    if (!me || !ROOM_HC_SPOT || typeof me.x !== 'number' || typeof me.y !== 'number') return false;
    var dx = me.x - ROOM_HC_SPOT.x, dy = me.y - ROOM_HC_SPOT.y;
    return (dx * dx + dy * dy) <= 2.25;
  }

  function openHostConsoleIfHost() {
    if (hostId !== socket.id) {
      appendLobbySystemChat('— เฉพาะ Host เท่านั้น');
      return;
    }
    if (hostConsoleOverlay && typeof hostConsoleOverlay.open === 'function') hostConsoleOverlay.open();
  }

  /** เปิดห้องแต่งตัว — production ใช้ #room-cz-overlay + CSS จาก customize-popup.css */
  function openRoomCustomize() {
    if (typeof window.openCustomizePopup === 'function') {
      window.openCustomizePopup();
    }
  }

  function closeRoomCustomize() {
    if (typeof window.closeCustomizePopup === 'function') {
      window.closeCustomizePopup();
    }
  }

  function setupRoomCustomize() {
    window.openRoomCustomize = openRoomCustomize;
    window.closeRoomCustomize = closeRoomCustomize;
    window.addEventListener('customize-popup:applied', function () {
      rlResolveMyColors(function () {
        persistLobbyPlayerTintJson();
        updateRoomProfileAvatarTinted();
        if (mapData && canvas) drawLobbyMap();
        renderPeers();
      });
    });
    try { document.dispatchEvent(new CustomEvent('room-lobby-ready')); } catch (e) { /* ignore */ }
  }

  function rlTintMask(img, color) {
    var c = document.createElement('canvas');
    c.width = img.naturalWidth; c.height = img.naturalHeight;
    var x = c.getContext('2d');
    x.drawImage(img, 0, 0);
    x.globalCompositeOperation = 'source-in';
    x.fillStyle = color;
    x.fillRect(0, 0, c.width, c.height);
    return c;
  }

  var rlCharManifest = null;
  var rlManifestId = null;
  /** ตัวละคร default — ใช้เมื่อผู้เล่น/บอทไม่มี characterId (กันตัวละครหายเป็นวงกลม blob) */
  var rlDefaultCharId = '';
  (function rlLoadDefaultChar() {
    try {
      fetch(SERVER + '/api/characters', { cache: 'no-store' })
        .then(function (r) { return r.ok ? r.json() : null; })
        .then(function (list) {
          if (!Array.isArray(list) || !list.length) return;
          var pick = list.filter(function (x) { return x && x.hasLayerFiles; })[0] || list[0];
          if (pick && pick.id) {
            rlDefaultCharId = pick.id;
            if (typeof mapData !== 'undefined' && mapData && typeof canvas !== 'undefined' && canvas) drawLobbyMap();
          }
        })
        .catch(function () { /* ignore */ });
    } catch (e) { /* ignore */ }
  })();

  function rlEnsureManifest(cb) {
    var id = getStoredCharacterId();
    if (!id) { if (cb) cb(null); return; }
    if (rlManifestId === id && rlCharManifest) { if (cb) cb(rlCharManifest); return; }
    fetch(SERVER + '/api/characters', { cache: 'no-store' })
      .then(function (r) { return r.json(); })
      .then(function (list) {
        var c = Array.isArray(list) ? list.filter(function (x) { return x && x.id === id; })[0] : null;
        if (c && c.layerManifest) { rlCharManifest = c.layerManifest; rlManifestId = id; if (cb) cb(rlCharManifest); }
        else if (cb) cb(null);
      })
      .catch(function () { if (cb) cb(null); });
  }

  function rlFrameLayerMap(id, dir, frameSuffix) {
    if (!rlCharManifest || rlManifestId !== id) return null;
    var entry = (frameSuffix === 'idle')
      ? (rlCharManifest.byDirIdle && rlCharManifest.byDirIdle[dir])
      : (rlCharManifest.byDir && rlCharManifest.byDir[dir]);
    if (!entry || !entry.frames || !entry.frames.length) return null;
    if (frameSuffix === 'idle') return entry.frames[0] || null;
    var fi = parseInt(frameSuffix, 10);
    return entry.frames[fi] || entry.frames[0] || null;
  }

  function rlBuildTintedFrame(id, dir, frameSuffix, theme, skin, cb) {
    var map = rlFrameLayerMap(id, dir, frameSuffix);
    if (!map) { cb(null); return; }
    var names = RL_LAYER_NAMES.filter(function (n) { return map[n]; });
    if (!names.length) { cb(null); return; }
    var loaded = {}, pending = names.length;
    names.forEach(function (name) {
      rlLoadImg(SERVER + '/img/characters/' + map[name], function (img) {
        loaded[name] = img;
        if (--pending === 0) done();
      });
    });
    function done() {
      var ref = null, i;
      for (i = 0; i < RL_LAYER_NAMES.length; i++) { if (loaded[RL_LAYER_NAMES[i]]) { ref = loaded[RL_LAYER_NAMES[i]]; break; } }
      if (!ref) { cb(null); return; }
      var c = document.createElement('canvas'); c.width = ref.naturalWidth; c.height = ref.naturalHeight;
      var x = c.getContext('2d');
      RL_LAYER_NAMES.forEach(function (name) {
        var img = loaded[name];
        if (!img || !img.naturalWidth) return;
        if (theme && (name === 'bodyColor' || name === 'hairColor')) x.drawImage(rlTintMask(img, theme), 0, 0);
        else if (skin && name === 'headColor') x.drawImage(rlTintMask(img, skin), 0, 0);
        else x.drawImage(img, 0, 0);
      });
      var out = new Image();
      try { out.src = c.toDataURL('image/png'); } catch (e) { cb(null); return; }
      cb(out);
    }
  }

  function getTintedFrame(id, theme, skin, dir, now, isWalking) {
    var ckey = id + '|' + (theme || '') + '|' + (skin || '') + '|' + dir;
    var anim = tintedCharCache[ckey];
    if (!anim) {
      anim = { frames: [], fallback: null };
      tintedCharCache[ckey] = anim;
      rlBuildTintedFrame(id, dir, 'idle', theme, skin, function (img) { if (img) anim.fallback = img; if (mapData && canvas) drawLobbyMap(); });
      for (var i = 0; i < CHARACTER_ANIM_FRAMES; i++) {
        (function (idx) {
          rlBuildTintedFrame(id, dir, String(idx), theme, skin, function (img) { if (img) anim.frames[idx] = img; if (mapData && canvas) drawLobbyMap(); });
        })(i);
      }
    }
    var phase = walkAnimPhaseIndex(now, isWalking);
    // ยืนนิ่ง → ใช้เฟรม idle (byDirIdle) ก่อน ไม่ใช่เฟรมเดินเฟรมแรก
    if (!isWalking && anim.fallback && anim.fallback.complete && anim.fallback.naturalWidth) return anim.fallback;
    for (var k = Math.min(phase, CHARACTER_ANIM_FRAMES - 1); k >= 0; k--) {
      var f = anim.frames[k];
      if (f && f.complete && f.naturalWidth) return f;
    }
    if (anim.fallback && anim.fallback.complete && anim.fallback.naturalWidth) return anim.fallback;
    return null;
  }

  function getAvatarImgColored(characterId, theme, skin, direction, now, isWalking) {
    if (characterId && (theme || skin)) {
      var t = getTintedFrame(characterId, theme || null, skin || null, direction || 'down', now, isWalking);
      if (t) return t;
    }
    return getAvatarImg(characterId, direction, now, isWalking);
  }

  function updateRoomProfileAvatarTinted() {
    var id = getStoredCharacterId();
    if (!id || (!myTintTheme && !myTintSkin)) return;
    rlBuildTintedFrame(id, 'down', 'idle', myTintTheme, myTintSkin, function (img) {
      if (!img) return;
      var av = document.getElementById('room-lobby-profile-avatar');
      if (av) av.src = img.src;
    });
  }

  injectRoomLoadingOverlay();
  setTimeout(hideRoomLoading, 8000); // safety: ไม่บัง overlay เกิน 8 วิ

  const keys = {};
  const MOVE_SPEED = 0.15;
  let lastMoveSend = 0;
  const moveCodes = ['KeyW', 'KeyA', 'KeyS', 'KeyD', 'ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'];
  let lobbyInteractPulse = null;
  let lobbyZoom = 1.2;
  const LOBBY_ZOOM_MIN = 0.4;
  const LOBBY_ZOOM_MAX = 2.5;
  let mapTransform = { offsetX: 0, offsetY: 0, ts: 32, w: 20, h: 15 };
  /** true เฉพาะช่องพิมพ์ข้อความ — ไม่รวม READY / แผนที่ (ให้กด F โต้ตอบได้โดยไม่ต้องกดพร้อมก่อน) */
  function isChatFocused() {
    const el = document.activeElement;
    if (!el) return false;
    if (el.id === 'ready-check') return false;
    if (el.closest && el.closest('.room-lobby-ready-fixed')) return false;
    if (el.id === 'lobby-map-canvas') return false;
    if (el.id === 'chat-input' || el.id === 'ai-chat-input') return true;
    if (el.tagName === 'TEXTAREA') return true;
    if (el.tagName === 'INPUT') {
      const t = (el.type || '').toLowerCase();
      return t === 'text' || t === 'search' || t === 'tel' || t === 'url' || t === 'email' || t === 'password' || t === '';
    }
    if (el.isContentEditable) return true;
    return false;
  }

  /** ปุ่มเดียวกับ F บนแป้น US + แป้นไทยมาตรฐาน (ช่องเดียวกับ F → ด) + ยังทำงานระหว่างสลับภาษา */
  function isLobbyInteractKeyDown(e) {
    if (e.isComposing || e.keyCode === 229) return false;
    if (e.code === 'KeyF') return true;
    const k = e.key;
    if (k === 'f' || k === 'F') return true;
    if (k === 'ด') return true;
    return false;
  }

  hostIconImg = new Image();
  hostIconImg.src = SERVER + '/img/host-icon.png';
  hostIconImg.onload = function () { if (mapData && canvas) drawLobbyMap(); };

  const lobbyReadyIconImg = new Image();
  lobbyReadyIconImg.src = SERVER + '/img/icon-ready.png?v=1';
  lobbyReadyIconImg.onerror = function () {
    lobbyReadyIconImg.src = SERVER + '/img/lobby-icon-ready.png?v=1';
  };
  lobbyReadyIconImg.onload = function () { if (mapData && canvas) drawLobbyMap(); };

  const readyLabelImg = document.getElementById('ready-label-img');
  const readyLabelEl = document.getElementById('ready-label');
  /** พร้อม/ไม่พร้อม ใช้ได้ทุกจำนวนคนในห้อง — ไม่ล็อกตาม peers.size */
  function ensureReadyControlEnabled() {
    if (readyCheck) readyCheck.disabled = false;
  }

  function updateReadyLabelVisual() {
    if (!readyCheck || !readyLabelImg) return;
    var on = readyCheck.checked;
    readyLabelImg.src = on ? READY_IMG_ACTIVE : READY_IMG_IDLE;
    readyLabelImg.alt = on ? 'พร้อมแล้ว — กดเพื่อยกเลิก' : 'ยังไม่พร้อม — กดเพื่อพร้อม';
    if (readyLabelEl) readyLabelEl.classList.toggle('ready-label--active', on);
  }

  const defaultShadowImgs = { up: new Image(), down: new Image(), left: new Image(), right: new Image() };
  ['up', 'down', 'left', 'right'].forEach(function (d) {
    defaultShadowImgs[d].src = SERVER + '/img/default-shadow-' + d + '.png';
    defaultShadowImgs[d].onload = function () { if (mapData && canvas) drawLobbyMap(); };
  });
  function getDefaultShadowImg(dir) {
    const d = dir || 'down';
    return defaultShadowImgs[d] && defaultShadowImgs[d].complete && defaultShadowImgs[d].naturalWidth ? defaultShadowImgs[d] : null;
  }

  const speakingBubbleFrames = [];
  const SPEAKING_BUBBLE_FRAME_MS = 120;
  for (var sb = 0; sb < 4; sb++) {
    var img = new Image();
    img.src = SERVER + '/img/speaking-bubble-0' + sb + '.png';
    img.onload = function () { if (mapData && canvas) drawLobbyMap(); };
    speakingBubbleFrames.push(img);
  }
  function getSpeakingBubbleFrame() {
    var idx = Math.floor((typeof Date !== 'undefined' ? Date.now() : 0) / SPEAKING_BUBBLE_FRAME_MS) % 4;
    var img = speakingBubbleFrames[idx];
    return img && img.complete && img.naturalWidth ? img : (speakingBubbleFrames[0] && speakingBubbleFrames[0].complete ? speakingBubbleFrames[0] : null);
  }

  function getQuizQuestionAreaTileBounds(md) {
    if (!md || md.gameType !== 'quiz') return null;
    const grid = md.quizQuestionArea;
    if (!grid || !grid.length) return null;
    let minX = Infinity;
    let minY = Infinity;
    let maxX = -Infinity;
    let maxY = -Infinity;
    for (let yy = 0; yy < grid.length; yy++) {
      const row = grid[yy];
      if (!row) continue;
      for (let xx = 0; xx < row.length; xx++) {
        if (row[xx] === 1) {
          if (xx < minX) minX = xx;
          if (yy < minY) minY = yy;
          if (xx > maxX) maxX = xx;
          if (yy > maxY) maxY = yy;
        }
      }
    }
    if (minX === Infinity) return null;
    return { minX, minY, maxX, maxY };
  }

  function syncQuizMapQuestionPanel() {
    const panel = document.getElementById('quiz-map-question-panel');
    const textEl = document.getElementById('quiz-map-question-text');
    if (!panel || !textEl) return;
    const bounds = (quizModeActive && mapData && mapData.gameType === 'quiz' && (lastQuizQuestionText || '').trim())
      ? getQuizQuestionAreaTileBounds(mapData)
      : null;
    if (!bounds || !mapTransform || mapTransform.cw == null) {
      panel.classList.add('is-hidden');
      panel.setAttribute('aria-hidden', 'true');
      return;
    }
    const cw = mapTransform.cw;
    const ch = mapTransform.ch;
    const z = mapTransform.lobbyZoom;
    const ts = mapTransform.tileSize;
    const meX = mapTransform.meX;
    const meY = mapTransform.meY;
    const leftPx = cw / 2 + z * (bounds.minX * ts - meX * ts);
    const topPx = ch / 2 + z * (bounds.minY * ts - meY * ts);
    const wPx = z * (bounds.maxX - bounds.minX + 1) * ts;
    const hPx = z * (bounds.maxY - bounds.minY + 1) * ts;
    textEl.textContent = lastQuizQuestionText || '';
    panel.style.left = Math.round(leftPx) + 'px';
    panel.style.top = Math.round(topPx) + 'px';
    panel.style.width = Math.round(Math.max(48, wPx)) + 'px';
    panel.style.height = Math.round(Math.max(40, hPx)) + 'px';
    panel.classList.remove('is-hidden');
    panel.setAttribute('aria-hidden', 'false');
  }

  function drawLobbyMap() {
    if (!canvas || !mapData) return;
    const ctx = canvas.getContext('2d');
    const w = mapData.width || 20;
    const h = mapData.height || 15;
    const tileSize = mapData.tileSize || 32;
    const mapWpx = w * tileSize;
    const mapHpx = h * tileSize;
    const cw = canvas.width;
    const ch = canvas.height;
    const characterCells = mapData.characterCells || 1;
    const cellsW = Math.max(1, Math.min(4, Number(mapData.characterCellsW) || characterCells || 1));
    const cellsH = Math.max(1, Math.min(4, Number(mapData.characterCellsH) || characterCells || 1));
    const me = peers.get(socket.id);
    const meX = (me && typeof me.x === 'number') ? me.x : 1;
    const meY = (me && typeof me.y === 'number') ? me.y : 1;
    const ts = tileSize * lobbyZoom;
    mapTransform = { cw, ch, lobbyZoom, tileSize, meX, meY, w, h };

    ctx.fillStyle = '#303770';
    ctx.fillRect(0, 0, cw, ch);

    ctx.save();
    ctx.translate(cw / 2, ch / 2);
    ctx.scale(lobbyZoom, lobbyZoom);
    ctx.translate(-meX * tileSize, -meY * tileSize);

    if (mapBackgroundImg && mapBackgroundImg.complete && mapBackgroundImg.naturalWidth) {
      const nw = mapBackgroundImg.naturalWidth;
      const nh = mapBackgroundImg.naturalHeight;
      ctx.drawImage(mapBackgroundImg, 0, 0, nw, nh, 0, 0, mapWpx, mapHpx);
    }

    const showGrid = mapData.showMapInGame !== false && mapData.showMapInGame !== 'false';
    const timeMs = Date.now();
    if (showGrid) {
      for (let y = 0; y < h; y++) {
        for (let x = 0; x < w; x++) {
          const sx = x * tileSize;
          const sy = y * tileSize;
          const ob = mapData.objects?.[y]?.[x] ?? 0;
          const cellColor = mapData.cellColors && mapData.cellColors[y] && mapData.cellColors[y][x];
          if (ob === 1) {
            ctx.fillStyle = 'rgba(65,72,104,0.92)';
            ctx.fillRect(sx, sy, tileSize, tileSize);
            ctx.strokeStyle = '#565f89';
            ctx.strokeRect(sx, sy, tileSize, tileSize);
          } else if (cellColor) {
            ctx.fillStyle = cellColor;
            ctx.fillRect(sx, sy, tileSize, tileSize);
          } else if (!mapBackgroundImg || !mapBackgroundImg.complete) {
            ctx.fillStyle = (x + y) % 2 === 0 ? '#24283b' : '#1f2335';
            ctx.fillRect(sx, sy, tileSize, tileSize);
          }
          const isInter = mapData.interactive && mapData.interactive[y] && mapData.interactive[y][x] === 1;
          if (isInter) {
            ctx.fillStyle = 'rgba(158,206,106,0.35)';
            ctx.fillRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
            ctx.strokeStyle = 'rgba(158,206,106,0.8)';
            ctx.strokeRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
            const pulse = lobbyInteractPulse;
            if (pulse && pulse.x === x && pulse.y === y && timeMs < pulse.until) {
              const t = (pulse.until - timeMs) / 700;
              ctx.fillStyle = 'rgba(255, 214, 102,' + (0.25 + 0.35 * t) + ')';
              ctx.fillRect(sx, sy, tileSize, tileSize);
            }
          }
          const isStartArea = mapData.gameType === 'lobby' && mapData.startGameArea && mapData.startGameArea[y] && mapData.startGameArea[y][x] === 1;
          if (isStartArea) {
            ctx.fillStyle = 'rgba(255, 158, 100, 0.4)';
            ctx.fillRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
            ctx.strokeStyle = 'rgba(255, 120, 60, 0.92)';
            ctx.lineWidth = 2;
            ctx.strokeRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
            ctx.lineWidth = 1;
          }
          const isQuizQ = mapData.gameType === 'quiz' && mapData.quizQuestionArea && mapData.quizQuestionArea[y] && mapData.quizQuestionArea[y][x] === 1;
          if (isQuizQ) {
            ctx.fillStyle = 'rgba(255, 214, 102, 0.32)';
            ctx.fillRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
            ctx.strokeStyle = 'rgba(224, 185, 70, 0.78)';
            ctx.strokeRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
          }
          const isQuizT = mapData.gameType === 'quiz' && mapData.quizTrueArea && mapData.quizTrueArea[y] && mapData.quizTrueArea[y][x] === 1;
          if (isQuizT) {
            ctx.fillStyle = 'rgba(86, 202, 255, 0.38)';
            ctx.fillRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
            ctx.strokeStyle = 'rgba(122, 220, 255, 0.85)';
            ctx.strokeRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
          }
          const isQuizF = mapData.gameType === 'quiz' && mapData.quizFalseArea && mapData.quizFalseArea[y] && mapData.quizFalseArea[y][x] === 1;
          if (isQuizF) {
            ctx.fillStyle = 'rgba(247, 118, 190, 0.38)';
            ctx.fillRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
            ctx.strokeStyle = 'rgba(255, 130, 200, 0.85)';
            ctx.strokeRect(sx + 2, sy + 2, tileSize - 4, tileSize - 4);
          }
        }
      }
    }
    if (mapData.gameType === 'quiz' && showGrid) {
      function tileBoundsForGrid(gr) {
        let minX = Infinity;
        let maxX = -Infinity;
        let minY = Infinity;
        let maxY = -Infinity;
        for (let yy = 0; yy < h; yy++) {
          for (let xx = 0; xx < w; xx++) {
            if (gr && gr[yy] && gr[yy][xx] === 1) {
              minX = Math.min(minX, xx);
              maxX = Math.max(maxX, xx);
              minY = Math.min(minY, yy);
              maxY = Math.max(maxY, yy);
            }
          }
        }
        return minX === Infinity ? null : { minX, maxX, minY, maxY };
      }
      function drawQuizZoneLabel(gr, en, th, icon, stroke, fill) {
        const b = tileBoundsForGrid(gr);
        if (!b) return;
        const sx = b.minX * tileSize;
        const sy = b.minY * tileSize;
        const sw = (b.maxX - b.minX + 1) * tileSize;
        const sh = (b.maxY - b.minY + 1) * tileSize;
        const mcx = sx + sw / 2;
        const mcy = sy + sh / 2;
        ctx.save();
        ctx.shadowColor = stroke;
        ctx.shadowBlur = 16;
        ctx.strokeStyle = stroke;
        ctx.lineWidth = 3;
        ctx.strokeRect(sx + 1, sy + 1, sw - 2, sh - 2);
        ctx.shadowBlur = 0;
        const iconSz = Math.min(sw, sh) * 0.4;
        ctx.font = 'bold ' + Math.round(iconSz) + 'px NotoSansThai, Kanit, system-ui, sans-serif';
        ctx.fillStyle = fill;
        ctx.textAlign = 'center';
        ctx.textBaseline = 'middle';
        ctx.fillText(icon, mcx, mcy - sh * 0.1);
        ctx.font = 'bold ' + Math.max(11, Math.round(tileSize * 0.44)) + 'px NotoSansThai, Kanit, system-ui, sans-serif';
        ctx.fillStyle = '#e2e8f0';
        ctx.fillText(en, mcx, mcy + sh * 0.08);
        ctx.font = Math.max(10, Math.round(tileSize * 0.32)) + 'px NotoSansThai, Kanit, system-ui, sans-serif';
        ctx.fillStyle = 'rgba(226,232,240,0.92)';
        ctx.fillText(th, mcx, mcy + sh * 0.2);
        ctx.restore();
      }
      drawQuizZoneLabel(mapData.quizTrueArea, 'SAFE', 'ปลอดภัย', '✓', 'rgba(122,220,255,0.95)', 'rgba(200,240,255,0.95)');
      drawQuizZoneLabel(mapData.quizFalseArea, 'SCAM', 'อันตราย', '✕', 'rgba(255,130,200,0.95)', 'rgba(255,210,225,0.95)');
    }
    function peerVisualOffset(id) {
      if (mapData && mapData.lobbySpawnMode === 'slots6') return { ax: 0, ay: 0 };
      let h = 0;
      for (let i = 0; i < (id || '').length; i++) h = (h * 31 + id.charCodeAt(i)) >>> 0;
      const ax = ((h % 5) - 2) * 0.1;
      const ay = ((Math.floor(h / 5) % 5) - 2) * 0.1;
      return { ax, ay };
    }

    // ไอคอน "ห้องแต่งตัว" ในฉาก (จุด interact — เดินไปกด F)
    if (ROOM_CZ_SPOT && roomCzIcon && roomCzIcon.complete && roomCzIcon.naturalWidth) {
      const _czx = ROOM_CZ_SPOT.x * tileSize;
      const _czy = ROOM_CZ_SPOT.y * tileSize;
      const _czS = tileSize * 1.5;
      ctx.save();
      ctx.globalAlpha = 0.5;
      ctx.fillStyle = 'rgba(34,211,238,0.35)';
      ctx.beginPath();
      ctx.ellipse(_czx + tileSize / 2, _czy + tileSize - 3, tileSize * 0.55, tileSize * 0.22, 0, 0, Math.PI * 2);
      ctx.fill();
      ctx.restore();
      ctx.drawImage(roomCzIcon, _czx + tileSize / 2 - _czS / 2, _czy + tileSize - _czS, _czS, _czS);
    }

    if (ROOM_HC_SPOT && roomHcIcon && hostId === socket.id && roomHcIcon.complete && roomHcIcon.naturalWidth) {
      const _hcx = ROOM_HC_SPOT.x * tileSize;
      const _hcy = ROOM_HC_SPOT.y * tileSize;
      const _hcS = tileSize * 1.5;
      ctx.save();
      ctx.globalAlpha = 0.5;
      ctx.fillStyle = 'rgba(236,72,153,0.35)';
      ctx.beginPath();
      ctx.ellipse(_hcx + tileSize / 2, _hcy + tileSize - 3, tileSize * 0.55, tileSize * 0.22, 0, 0, Math.PI * 2);
      ctx.fill();
      ctx.restore();
      ctx.drawImage(roomHcIcon, _hcx + tileSize / 2 - _hcS / 2, _hcy + tileSize - _hcS, _hcS, _hcS);
    }

    const peerList = [...peers.entries(), ...lobbyBots.entries()].sort(function (a, b) {
      const pa = a[1], pb = b[1];
      const ya = pa.y != null ? pa.y : 1, yb = pb.y != null ? pb.y : 1;
      if (Math.abs(ya - yb) > 0.01) return ya - yb;
      return (pa.x != null ? pa.x : 1) - (pb.x != null ? pb.x : 1);
    });
    peerList.forEach(function (entry) {
      const id = entry[0], p = entry[1];
      const off = peerVisualOffset(id);
      const px = ((p.x != null ? p.x : 1) + off.ax) * tileSize;
      const py = ((p.y != null ? p.y : 1) + off.ay) * tileSize;
      const screenX = px;
      const screenY = py;
      const cx = screenX + tileSize / 2;
      const cellBottom = screenY + tileSize;
      const boxW = tileSize * cellsW * 1.15;
      const boxH = tileSize * cellsH * 1.35;
      const dir = p.direction || 'down';
      const isWalking = id === socket.id
        ? !!(me && me.isWalking)
        : (p.tx != null || p.ty != null)
          ? !!((p.tx != null && Math.abs((p.tx || p.x) - p.x) > 0.02) || (p.ty != null && Math.abs((p.ty || p.y) - p.y) > 0.02))
          : !!p.isWalking; /* บอท (ไม่มี tx/ty) ใช้ flag isWalking ที่ stepLobbyCaseBots ตั้ง */
      const peerLockedOut = quizModeActive && (
        quizPeersLocked[id] ||
        (id === socket.id && quizPlayerLocal && quizPlayerLocal.cannotTrue && quizPlayerLocal.cannotFalse)
      );
      if (peerLockedOut) ctx.save();
      if (peerLockedOut) {
        ctx.globalAlpha = 0.45;
        ctx.filter = 'grayscale(1) brightness(1.25)';
      }
      const peerTheme = (id === socket.id) ? myTintTheme : (p.colorTheme || null);
      const peerSkin = (id === socket.id) ? myTintSkin : (p.colorSkin || null);
      const cid = p.characterId || rlDefaultCharId; // กันตัวละครหายเป็นวงกลม blob เมื่อ characterId ว่าง
      const charImg = getAvatarImgColored(cid, peerTheme, peerSkin, dir, timeMs, isWalking);
      const sz = readLobbyCharImgSize(charImg);
      const iw = sz.iw;
      const ih = sz.ih;
      const imgScale = (iw > 0 && ih > 0) ? Math.min(boxW / iw, boxH / ih, 1) : 0;
      const drawW = imgScale > 0 ? iw * imgScale : 0;
      const drawH = imgScale > 0 ? ih * imgScale : 0;
      const drawY = cellBottom - drawH;
      const shadowImg = getDefaultShadowImg(dir);
      if (shadowImg) {
        const sw = shadowImg.naturalWidth;
        const sh = shadowImg.naturalHeight;
        const shadowScale = Math.min(drawW / sw, drawH / sh, 1.2);
        const shadowW = sw * shadowScale;
        const shadowH = sh * shadowScale;
        const shadowY = cellBottom - shadowH + (tileSize * 0.08);
        ctx.globalAlpha = 0.7;
        ctx.drawImage(shadowImg, 0, 0, sw, sh, cx - shadowW / 2, shadowY, shadowW, shadowH);
        ctx.globalAlpha = 1;
      }
      if (drawW > 0 && drawH > 0 && charImg) {
        var sIw = iw;
        var sIh = ih;
        if (charImg.tagName === 'CANVAS') {
          sIw = charImg.width;
          sIh = charImg.height;
        } else if (charImg.naturalWidth > 0 && charImg.naturalHeight > 0) {
          sIw = charImg.naturalWidth;
          sIh = charImg.naturalHeight;
        }
        ctx.drawImage(charImg, 0, 0, sIw, sIh, cx - drawW / 2, drawY, drawW, drawH);
      } else {
        const r = Math.max(8, ts / 2 - 2);
        const cy = screenY + ts / 2;
        ctx.fillStyle = id === socket.id ? '#7aa2f7' : '#9ece6a';
        ctx.beginPath();
        ctx.arc(cx, cy, r, 0, Math.PI * 2);
        ctx.fill();
        ctx.strokeStyle = '#c0caf5';
        ctx.lineWidth = 2;
        ctx.stroke();
      }
      const nameFontSize = Math.max(10, Math.round(tileSize * 0.4));
      const labelY = cellBottom - drawH - (tileSize * 0.2);
      const headTop = cellBottom - drawH - 4;
      const now = Date.now();
      if (p.speakingUntil > now) {
        var bubbleImg = getSpeakingBubbleFrame();
        if (bubbleImg) {
          var bw = tileSize * 0.9;
          var bh = (bubbleImg.naturalHeight / bubbleImg.naturalWidth) * bw;
          var bubbleY = headTop - bh - tileSize * 0.08;
          ctx.drawImage(bubbleImg, 0, 0, bubbleImg.naturalWidth, bubbleImg.naturalHeight, cx - bw / 2, bubbleY, bw, bh);
        } else {
          var level = (p.speakingLevel != null ? p.speakingLevel : 0.5);
          var r0 = tileSize * (0.2 + level * 0.25);
          ctx.strokeStyle = 'rgba(158, 206, 106, 0.85)';
          ctx.lineWidth = 2;
          ctx.beginPath();
          ctx.arc(cx, headTop, r0, 0, Math.PI * 2);
          ctx.stroke();
        }
      }
      const nameText = (p.nickname || id.slice(0, 6));
      const isHost = id === hostId;
      const nameY = labelY + (tileSize * 0.125);
      const voiceIconY = labelY - tileSize * 0.12;
      if (p.voiceMicOn === false) {
        const iconSize = Math.max(10, Math.round(tileSize * 0.35));
        ctx.font = iconSize + 'px NotoSansThai, Kanit, system-ui, sans-serif';
        ctx.textAlign = 'center';
        ctx.textBaseline = 'middle';
        ctx.fillStyle = '#f7768e';
        ctx.fillText('🔇', cx, voiceIconY);
        ctx.textBaseline = 'alphabetic';
      }
      if (p.ready && lobbyReadyIconImg && lobbyReadyIconImg.complete && lobbyReadyIconImg.naturalWidth) {
        var nwI = lobbyReadyIconImg.naturalWidth;
        var nhI = lobbyReadyIconImg.naturalHeight;
        if (nwI > 0 && nhI > 0) {
          var rih = 82;
          var riw = 89;
          var iconBottom = Math.round(nameY - nameFontSize * 1.0);
          var iconTop = iconBottom - rih;
          var iconLeft = Math.round(cx - riw / 2);
          ctx.save();
          ctx.imageSmoothingEnabled = true;
          ctx.imageSmoothingQuality = 'high';
          ctx.drawImage(lobbyReadyIconImg, 0, 0, nwI, nhI, iconLeft, iconTop, riw, rih);
          ctx.restore();
        }
      }
      ctx.fillStyle = '#ffffff';
      ctx.strokeStyle = '#111827';
      ctx.lineWidth = Math.max(2, Math.round(nameFontSize * 0.22));
      ctx.lineJoin = 'round';
      ctx.font = '400 ' + nameFontSize + 'px NotoSansThai, Kanit, sans-serif';
      ctx.textAlign = 'center';
      if (isHost && hostIconImg && hostIconImg.complete && hostIconImg.naturalWidth) {
        const iconW = 53;
        const iconH = 40;
        const gap = Math.max(2, Math.round(tileSize * 0.06));
        const textW = ctx.measureText(nameText).width;
        const totalW = iconW + gap + textW;
        const startX = cx - totalW / 2;
        ctx.drawImage(hostIconImg, 0, 0, hostIconImg.naturalWidth, hostIconImg.naturalHeight, startX, labelY - iconH / 2, iconW, iconH);
        ctx.textAlign = 'left';
        ctx.strokeText(nameText, startX + iconW + gap, nameY);
        ctx.fillText(nameText, startX + iconW + gap, nameY);
        ctx.textAlign = 'center';
      } else {
        ctx.strokeText(nameText, cx, nameY);
        ctx.fillText(nameText, cx, nameY);
      }
      if (peerLockedOut) ctx.restore();
    });
    ctx.restore();
    syncQuizMapQuestionPanel();
  }

  function resizeAndDraw() {
    if (!canvas) return;
    const vp = window.visualViewport;
    const w = Math.max(vp ? vp.width : 0, window.innerWidth || 0, document.documentElement.clientWidth || 0) || 800;
    const h = Math.max(vp ? vp.height : 0, window.innerHeight || 0, document.documentElement.clientHeight || 0) || 600;
    const pw = Math.floor(w);
    const ph = Math.floor(h);
    if (canvas.width !== pw || canvas.height !== ph) {
      canvas.width = pw;
      canvas.height = ph;
    }
    drawLobbyMap();
  }

  function redrawLobbyMap() {
    if (canvas && mapData) drawLobbyMap();
  }

  function getFacingCellOffset(direction) {
    const d = direction || 'down';
    if (d === 'up') return { dx: 0, dy: -1 };
    if (d === 'down') return { dx: 0, dy: 1 };
    if (d === 'left') return { dx: -1, dy: 0 };
    return { dx: 1, dy: 0 };
  }

  function cellIsInteractiveLobby(tx, ty) {
    if (!mapData || !mapData.interactive) return false;
    const row = mapData.interactive[ty];
    return !!(row && row[tx] === 1);
  }

  /** ช่องที่กด F ได้: ช่องหน้าทิศทางก่อน แล้วค่อยช่องที่ยืนอยู่ */
  function getLobbyInteractTarget(me) {
    if (!mapData || !me) return null;
    const w = mapData.width || 20, h = mapData.height || 15;
    const px = Math.floor(me.x), py = Math.floor(me.y);
    const { dx, dy } = getFacingCellOffset(me.direction);
    const fx = px + dx, fy = py + dy;
    if (fx >= 0 && fx < w && fy >= 0 && fy < h && cellIsInteractiveLobby(fx, fy)) return { x: fx, y: fy };
    if (cellIsInteractiveLobby(px, py)) return { x: px, y: py };
    return null;
  }

  function appendLobbySystemChat(text) {
    const el = document.getElementById('chat-messages');
    if (!el) return;
    const div = document.createElement('div');
    div.className = 'chat-msg chat-msg-system';
    div.textContent = text;
    el.appendChild(div);
    el.scrollTop = 1e9;
  }

  function quizCellOnLobby(grid, tx, ty) {
    return !!(grid && grid[ty] && grid[ty][tx] === 1);
  }

  function quizTilesFootprintLobby(px, py) {
    const s = new Set();
    if (!mapData) return s;
    const cells = Math.max(1, Math.min(4, mapData.characterCells || 1));
    const w = mapData.width || 20, h = mapData.height || 15;
    const minTx = Math.floor(px);
    const minTy = Math.floor(py);
    const maxTx = Math.min(w - 1, minTx + cells - 1);
    const maxTy = Math.min(h - 1, minTy + cells - 1);
    for (let ty = minTy; ty <= maxTy; ty++) {
      for (let tx = minTx; tx <= maxTx; tx++) {
        if (tx >= 0 && ty >= 0) s.add(tx + ',' + ty);
      }
    }
    return s;
  }

  function quizAnswerTileForbiddenLobby(tx, ty) {
    if (!quizPlayerLocal || quizPlayerLocal.eliminated) return false;
    if (quizPlayerLocal.cannotTrue && quizCellOnLobby(mapData.quizTrueArea, tx, ty)) return true;
    if (quizPlayerLocal.cannotFalse && quizCellOnLobby(mapData.quizFalseArea, tx, ty)) return true;
    return false;
  }

  function quizLockFootprintBlocksLobby(px, py) {
    if (!mapData || mapData.gameType !== 'quiz' || !quizModeActive || !quizPlayerLocal || quizPlayerLocal.eliminated) return false;
    for (const k of quizTilesFootprintLobby(px, py)) {
      const p = k.split(',');
      const txi = +p[0], tyi = +p[1];
      if (quizAnswerTileForbiddenLobby(txi, tyi)) return true;
    }
    return false;
  }

  function quizLockWouldEnterForbiddenLobby(ox, oy, nx, ny) {
    if (!mapData || mapData.gameType !== 'quiz' || !quizModeActive || !quizPlayerLocal || quizPlayerLocal.eliminated) return false;
    const fromS = quizTilesFootprintLobby(ox, oy);
    const toS = quizTilesFootprintLobby(nx, ny);
    for (const k of toS) {
      if (fromS.has(k)) continue;
      const p = k.split(',');
      const txi = +p[0], tyi = +p[1];
      if (quizAnswerTileForbiddenLobby(txi, tyi)) return true;
    }
    return false;
  }

  function canWalkLobbyBot(x, y, fromX, fromY, botId) {
    if (!mapData) return false;
    const w = mapData.width || 20, h = mapData.height || 15;
    const tx = Math.floor(x), ty = Math.floor(y);
    if (tx < 0 || tx >= w || ty < 0 || ty >= h) return false;
    const ob = mapData.objects?.[ty]?.[tx] ?? 0;
    if (ob === 1) return false;
    const bp = mapData.blockPlayer;
    if (bp && bp[ty] && bp[ty][tx] === 1) {
      for (const [, p] of peers) {
        if (Math.floor(p.x) === tx && Math.floor(p.y) === ty) return false;
      }
      for (const [id, b] of lobbyBots) {
        if (id === botId) continue;
        if (Math.floor(b.x) === tx && Math.floor(b.y) === ty) return false;
      }
    }
    return true;
  }

  function canWalkLobby(x, y, fromX, fromY) {
    if (!mapData) return false;
    const w = mapData.width || 20, h = mapData.height || 15;
    const tx = Math.floor(x), ty = Math.floor(y);
    if (tx < 0 || tx >= w || ty < 0 || ty >= h) return false;
    const ob = mapData.objects?.[ty]?.[tx] ?? 0;
    if (ob === 1) return false;
    const bp = mapData.blockPlayer;
    if (bp && bp[ty] && bp[ty][tx] === 1) {
      for (const [id, p] of peers) {
        if (id === socket.id) continue;
        if (Math.floor(p.x) === tx && Math.floor(p.y) === ty) return false;
      }
    }
    if (mapData.gameType === 'quiz' && quizModeActive && quizPlayerLocal && !quizPlayerLocal.eliminated) {
      const hasFrom = typeof fromX === 'number' && typeof fromY === 'number' && !Number.isNaN(fromX) && !Number.isNaN(fromY);
      if (hasFrom) {
        if (quizLockWouldEnterForbiddenLobby(fromX, fromY, x, y)) return false;
      } else if (quizLockFootprintBlocksLobby(x, y)) {
        return false;
      }
    }
    return true;
  }

  /** A* pathfinding on lobby grid. Returns array of { x, y } (cell centers). */
  function pathfindLobby(fromX, fromY, toX, toY) {
    if (!mapData) return [];
    const w = mapData.width || 20, h = mapData.height || 15;
    const fx = Math.floor(fromX), fy = Math.floor(fromY);
    const tx = Math.floor(toX), ty = Math.floor(toY);
    if (tx < 0 || tx >= w || ty < 0 || ty >= h || !canWalkLobby(tx + 0.5, ty + 0.5)) return [];
    if (fx === tx && fy === ty) return [{ x: tx + 0.5, y: ty + 0.5 }];
    const key = (gx, gy) => gx + ',' + gy;
    const open = [{ gx: fx, gy: fy, f: 0, g: 0 }];
    const closed = new Set();
    const cameFrom = {};
    const gScore = { [key(fx, fy)]: 0 };
    const heuristic = (ax, ay) => Math.abs(ax - tx) + Math.abs(ay - ty);
    const dirs = [{ dx: 0, dy: -1 }, { dx: 1, dy: 0 }, { dx: 0, dy: 1 }, { dx: -1, dy: 0 }];
    while (open.length) {
      open.sort((a, b) => a.f - b.f);
      const cur = open.shift();
      const ck = key(cur.gx, cur.gy);
      if (closed.has(ck)) continue;
      closed.add(ck);
      if (cur.gx === tx && cur.gy === ty) {
        const path = [];
        let u = cur;
        while (u) {
          path.unshift({ x: u.gx + 0.5, y: u.gy + 0.5 });
          u = cameFrom[key(u.gx, u.gy)];
        }
        return path;
      }
      for (const d of dirs) {
        const nx = cur.gx + d.dx, ny = cur.gy + d.dy;
        if (nx < 0 || nx >= w || ny < 0 || ny >= h) continue;
        if (!canWalkLobby(nx + 0.5, ny + 0.5, cur.gx + 0.5, cur.gy + 0.5)) continue;
        const nk = key(nx, ny);
        if (closed.has(nk)) continue;
        const g = (gScore[ck] ?? Infinity) + 1;
        if (g >= (gScore[nk] ?? Infinity)) continue;
        gScore[nk] = g;
        cameFrom[nk] = cur;
        open.push({ gx: nx, gy: ny, f: g + heuristic(nx, ny), g });
      }
    }
    return [];
  }

  let lobbyPath = [];

  function lobbyMapRequiresStartGameArea() {
    if (!mapData) return false;
    var nameOk = String(mapData.name || '').trim().toLowerCase() === LOBBY_A_MAP_NAME.toLowerCase();
    if (mapData.gameType !== 'lobby' && !nameOk) return false;
    var a = mapData.startGameArea;
    if (!a || !a.length) return false;
    for (var y = 0; y < a.length; y++) {
      var row = a[y];
      if (!row) continue;
      for (var x = 0; x < row.length; x++) if (row[x] === 1) return true;
    }
    return false;
  }

  /** ช่องกริดที่ตัวละครครอบคลุม (สูง×กว้าง จากแมป) — ใช้ตรวจพื้นที่ส้ม/เขียว ไม่ใช่แค่มุม anchor */
  function lobbyCharacterFootprintTiles(px, py) {
    const tiles = new Set();
    if (!mapData) return tiles;
    const w = mapData.width || 20;
    const h = mapData.height || 15;
    const cellsW = Math.max(1, Math.min(4, mapData.characterCellsW || mapData.characterCells || 1));
    const cellsH = Math.max(1, Math.min(4, mapData.characterCellsH || mapData.characterCells || 1));
    const minTx = Math.floor(px);
    const minTy = Math.floor(py);
    const maxTx = Math.min(w - 1, minTx + cellsW - 1);
    const maxTy = Math.min(h - 1, minTy + cellsH - 1);
    for (let ty = minTy; ty <= maxTy; ty++) {
      for (let tx = minTx; tx <= maxTx; tx++) {
        if (tx >= 0 && ty >= 0) tiles.add(tx + ',' + ty);
      }
    }
    return tiles;
  }

  function peerStandingInStartGameArea(me) {
    if (!me || !mapData) return false;
    const area = mapData.startGameArea;
    if (!area || !area.length) return false;
    for (const key of lobbyCharacterFootprintTiles(me.x, me.y)) {
      const parts = key.split(',');
      const tx = +parts[0];
      const ty = +parts[1];
      if (area[ty] && area[ty][tx] === 1) return true;
    }
    return false;
  }

  function hostStandingInStartGameArea() {
    return peerStandingInStartGameArea(peers.get(socket.id));
  }

  function updateHostStartGameButton() {
    if (!btnStart) return;
    if (hostId !== socket.id) return;
    var hint = document.getElementById('host-start-area-hint');
    if (isCurrentRoomLobbyA()) {
      btnStart.disabled = true;
      btnStart.setAttribute('hidden', '');
      btnStart.setAttribute('aria-hidden', 'true');
      if (hint) {
        hint.hidden = false;
        var reqA = lobbyMapRequiresStartGameArea();
        var okA = !reqA || hostStandingInStartGameArea();
        if (reqA && !okA) {
          hint.textContent = 'LobbyA: กดพร้อมก่อน · ยืนพื้นส้ม แล้วกด F / ด เพื่อเลือกระดับและคดี';
        } else if (reqA) {
          hint.textContent = 'LobbyA: กดพร้อมก่อน · ในพื้นส้ม กด F / ด เพื่อเลือกระดับและคดี';
        } else {
          hint.textContent = 'LobbyA: กดพร้อมก่อน · กด F / ด เพื่อเลือกระดับและคดี';
        }
      }
      return;
    }
    btnStart.removeAttribute('hidden');
    btnStart.removeAttribute('aria-hidden');
    var req = lobbyMapRequiresStartGameArea();
    var ok = !req || hostStandingInStartGameArea();
    btnStart.disabled = !ok;
    btnStart.title = req ? (ok ? 'เริ่มเกม' : 'ยืนในพื้นที่สีส้ม (เริ่มเกม) ก่อน') : 'เริ่มเกม';
    if (hint) {
      if (req && !ok) {
        hint.hidden = false;
        hint.textContent = 'ยืนในพื้นที่สีส้มบนแผนที่ (จุดเริ่มเกม) แล้วค่อยกดเริ่ม';
      } else {
        hint.hidden = true;
        hint.textContent = '';
      }
    }
  }

  /** โถง LobbyA — host กดเริ่มแล้วให้เลือกระดับแล้วคดีก่อนเข้า play (ตรง Create Room → mlsbbxfe) */
  const LOBBY_A_MAP_NAME = 'LobbyA';
  const LOBBY_A_MAP_ID = 'mlsbbxfe';

  function isCurrentRoomLobbyA() {
    if (!mapData) return false;
    if (String(mapData.name || '').trim().toLowerCase() === LOBBY_A_MAP_NAME.toLowerCase()) return true;
    if (clientLobbyMapId === LOBBY_A_MAP_ID) return true;
    if (String(mapData.id || '').trim() === LOBBY_A_MAP_ID) return true;
    return false;
  }

  /** Host บน LobbyA — หลังกดพร้อมแล้ว กด F ในพื้นที่ส้ม (หรือทั้งแมปถ้าไม่มีส้ม) เพื่อเลือกระดับ/คดี */
  function hostCanOpenLobbyAPreplayWithF() {
    if (!isCurrentRoomLobbyA() || hostId !== socket.id) return false;
    var req = lobbyMapRequiresStartGameArea();
    return !req || hostStandingInStartGameArea();
  }

  let preplaySelectedLevel = null;
  let preplayOverlay = null;
  let preplayStepLevel = null;
  let preplayStepCase = null;
  let preplayCaseDetailOverlay = null;

  function getPreplayEls() {
    if (!preplayOverlay) {
      preplayOverlay = document.getElementById('lobby-preplay-overlay');
      preplayStepLevel = document.getElementById('lobby-preplay-step-level');
      preplayStepCase = document.getElementById('lobby-preplay-step-case');
      preplayCaseDetailOverlay = document.getElementById('lobby-preplay-case-detail-overlay');
    }
    return !!preplayOverlay;
  }

  function closeLobbyPreplayWizard() {
    getPreplayEls();
    if (!preplayOverlay) return;
    preplayOverlay.classList.add('is-hidden');
    preplayOverlay.setAttribute('aria-hidden', 'true');
    try { document.body.classList.remove('room-lobby--preplay-open'); } catch (e) { /* ignore */ }
    preplaySelectedLevel = null;
    delete preplayOverlay.dataset.preplayLevel;
    if (preplayCaseDetailOverlay) preplayCaseDetailOverlay.classList.add('is-hidden');
    preplayOverlay.querySelectorAll('.lobby-level-card.is-selected').forEach(function (el) { el.classList.remove('is-selected'); });
  }

  function openLobbyPreplayWizard() {
    if (!getPreplayEls()) return;
    initLobbyPreplayWizard();
    preplaySelectedLevel = null;
    delete preplayOverlay.dataset.preplayLevel;
    preplayOverlay.querySelectorAll('.lobby-level-card.is-selected').forEach(function (el) { el.classList.remove('is-selected'); });
    preplayOverlay.classList.remove('is-hidden');
    preplayOverlay.setAttribute('aria-hidden', 'false');
    try { document.body.classList.add('room-lobby--preplay-open'); } catch (e) { /* ignore */ }
    if (preplayStepLevel) preplayStepLevel.classList.remove('is-hidden');
    if (preplayStepCase) preplayStepCase.classList.add('is-hidden');
    if (preplayCaseDetailOverlay) preplayCaseDetailOverlay.classList.add('is-hidden');
  }

  function syncPreplayCaseStepScale() {
    if (!getPreplayEls() || !preplayStepCase || !preplayOverlay) return;
    if (preplayOverlay.classList.contains('is-hidden')) return;
    if (preplayStepCase.classList.contains('is-hidden')) return;
    var rect = preplayStepCase.getBoundingClientRect();
    if (!rect.width || !rect.height) return;
    var baseWidth = 1700;
    var baseHeight = 900;
    var byWidth = rect.width / baseWidth;
    var byHeight = rect.height / baseHeight;
    var targetScale = 1.08;
    var scale = Math.max(0.56, Math.min(targetScale, Math.min(byWidth, byHeight) * targetScale));
    preplayStepCase.style.setProperty('--lobby-preplay-case-scale', scale.toFixed(4));
  }

  function showPreplayCaseStep() {
    if (preplayStepLevel) preplayStepLevel.classList.add('is-hidden');
    if (preplayStepCase) preplayStepCase.classList.remove('is-hidden');
    syncPreplayCaseStepScale();
    requestAnimationFrame(syncPreplayCaseStepScale);
  }

  function showPreplayLevelStep() {
    if (preplayStepCase) preplayStepCase.classList.add('is-hidden');
    if (preplayStepLevel) preplayStepLevel.classList.remove('is-hidden');
    if (preplayCaseDetailOverlay) preplayCaseDetailOverlay.classList.add('is-hidden');
  }

  function initLobbyPreplayWizard() {
    if (!getPreplayEls() || !preplayOverlay || preplayOverlay.dataset.bound === '1') return;
    preplayOverlay.dataset.bound = '1';

    preplayOverlay.querySelectorAll('.lobby-level-card').forEach(function (btn) {
      btn.addEventListener('click', function () {
        preplayOverlay.querySelectorAll('.lobby-level-card').forEach(function (b) { b.classList.remove('is-selected'); });
        btn.classList.add('is-selected');
        preplaySelectedLevel = btn.getAttribute('data-level');
        if (preplaySelectedLevel) {
          preplayOverlay.dataset.preplayLevel = preplaySelectedLevel;
          showPreplayCaseStep();
        }
      });
    });

    var btnCloseLevel = document.getElementById('lobby-preplay-close-level');
    if (btnCloseLevel) btnCloseLevel.addEventListener('click', function () { closeLobbyPreplayWizard(); });

    var btnCloseCase = document.getElementById('lobby-preplay-close-case');
    if (btnCloseCase) btnCloseCase.addEventListener('click', function () { closeLobbyPreplayWizard(); });

    var btnBackCase = document.getElementById('lobby-preplay-back-case');
    if (btnBackCase) btnBackCase.addEventListener('click', function () { showPreplayLevelStep(); });

    var caseRow = preplayOverlay.querySelector('.lobby-preplay-case-row');
    var casePrev = document.getElementById('lobby-preplay-case-prev');
    var caseNext = document.getElementById('lobby-preplay-case-next');
    function scrollCaseRow(dir) {
      if (!caseRow) return;
      var firstCard = caseRow.querySelector('.lobby-case-card-wrap');
      var step = firstCard ? Math.max(120, Math.round(firstCard.getBoundingClientRect().width * 0.92)) : Math.max(140, Math.round(caseRow.clientWidth * 0.65));
      caseRow.scrollBy({ left: dir * step, behavior: 'smooth' });
    }
    if (casePrev) casePrev.addEventListener('click', function () { scrollCaseRow(-1); });
    if (caseNext) caseNext.addEventListener('click', function () { scrollCaseRow(1); });

    preplayOverlay.addEventListener('click', function (ev) {
      var startBtn = ev.target.closest('.lobby-case-start');
      if (!startBtn || !preplayOverlay.contains(startBtn)) return;
      var cid = (startBtn.getAttribute('data-case') || '').trim();
      var level = (preplaySelectedLevel && String(preplaySelectedLevel).trim())
        || (preplayOverlay.dataset.preplayLevel || '').trim();
      if (!cid) return;
      if (!level) {
        try { alert('กรุณาเลือกระดับความท้าทายก่อน (กลับไปขั้นตอนก่อนหน้าแล้วเลือกระดับ)'); } catch (e0) { /* ignore */ }
        return;
      }
      var acked = false;
      var t = setTimeout(function () {
        if (!acked) {
          try { alert('ไม่ได้รับตอบจากเซิร์ฟเวอร์ — ลองใหม่หรือรีเฟรชหน้า'); } catch (eT) { /* ignore */ }
        }
      }, 12000);
      /* ไม่ส่ง mapId — กันประเภทเซิร์ฟรับแล้วไป play.html แทน LobbyB เมื่อเงื่อนไขย้ายแผนที่ไม่ผ่าน */
      socket.emit('start-game', {
        lobbyLevel: level,
        caseId: cid,
        detectiveLobbyBStart: true
      }, function (res) {
        acked = true;
        clearTimeout(t);
        if (res && res.ok === false && res.error) {
          try { alert(res.error); } catch (e2) { /* ignore */ }
        }
      });
    });

    document.querySelectorAll('.lobby-case-detail').forEach(function (btn) {
      btn.addEventListener('click', function () {
        var o = document.getElementById('lobby-preplay-case-detail-overlay');
        if (o) o.classList.remove('is-hidden');
      });
    });

    var detailClose = document.getElementById('lobby-preplay-case-detail-close');
    if (detailClose) detailClose.addEventListener('click', function () {
      var o = document.getElementById('lobby-preplay-case-detail-overlay');
      if (o) o.classList.add('is-hidden');
    });

    window.addEventListener('resize', syncPreplayCaseStepScale);
    window.addEventListener('orientationchange', function () {
      setTimeout(syncPreplayCaseStepScale, 180);
    });
  }

  const PATH_ARRIVE_THRESH = 0.15;
  const LOBBY_BOT_WANDER_DIRS = [[0, -1], [0, 1], [-1, 0], [1, 0]];

  function stepLobbyCaseBots() {
    if (!lobbyBotSlotCount || !mapData || lobbyBots.size === 0) return;
    const w = mapData.width || 20, h = mapData.height || 15;
    const now = Date.now();
    lobbyBots.forEach((b, id) => {
      if (typeof b.botWanderDx !== 'number' || typeof b.botWanderDy !== 'number' || (b.botWanderDx === 0 && b.botWanderDy === 0)) {
        const d = LOBBY_BOT_WANDER_DIRS[Math.floor(Math.random() * LOBBY_BOT_WANDER_DIRS.length)];
        b.botWanderDx = d[0];
        b.botWanderDy = d[1];
      }
      if (typeof b.botWanderNextTurn !== 'number') b.botWanderNextTurn = now + 600;
      if (now >= b.botWanderNextTurn) {
        b.botWanderNextTurn = now + 650 + Math.floor(Math.random() * 2200);
        if (Math.random() < 0.55) {
          const d = LOBBY_BOT_WANDER_DIRS[Math.floor(Math.random() * LOBBY_BOT_WANDER_DIRS.length)];
          b.botWanderDx = d[0];
          b.botWanderDy = d[1];
        }
      }
      const accX = b.botWanderDx;
      const accY = b.botWanderDy;
      if (Math.abs(accY) > Math.abs(accX)) b.direction = accY > 0 ? 'down' : 'up';
      else if (accX !== 0) b.direction = accX > 0 ? 'right' : 'left';
      const ox = b.x, oy = b.y;
      const step = MOVE_SPEED;
      const nx = b.x + accX * step;
      const ny = b.y + accY * step;
      if (canWalkLobbyBot(nx, ny, b.x, b.y, id)) {
        b.x = nx;
        b.y = ny;
      } else if (canWalkLobbyBot(nx, b.y, b.x, b.y, id)) {
        b.x = nx;
      } else if (canWalkLobbyBot(b.x, ny, b.x, b.y, id)) {
        b.y = ny;
      } else {
        const d = LOBBY_BOT_WANDER_DIRS[Math.floor(Math.random() * LOBBY_BOT_WANDER_DIRS.length)];
        b.botWanderDx = d[0];
        b.botWanderDy = d[1];
        b.botWanderNextTurn = now + 200 + Math.floor(Math.random() * 600);
      }
      b.x = Math.max(0, Math.min(w - 0.01, b.x));
      b.y = Math.max(0, Math.min(h - 0.01, b.y));
      b.isWalking = Math.abs(b.x - ox) > 1e-5 || Math.abs(b.y - oy) > 1e-5;
    });
  }

  function lobbyTick() {
    const me = peers.get(socket.id);
    if (!mapData || !me) { requestAnimationFrame(lobbyTick); return; }
    peers.forEach((p, id) => {
      if (id !== socket.id && (p.tx != null || p.ty != null)) {
        if (p.tx != null) p.x += (p.tx - p.x) * LERP;
        if (p.ty != null) p.y += (p.ty - p.y) * LERP;
      }
    });
    if (!suspectPickOverlayOpen && lobbyBotSlotCount > 0) stepLobbyCaseBots();
    const w = mapData.width || 20, h = mapData.height || 15;
    const preWalkX = me.x, preWalkY = me.y;
    let accX = 0, accY = 0;
    let usePath = false;
    if (!suspectPickOverlayOpen) {
    const keyPressed = !isChatFocused() && (keys['ArrowUp'] || keys['KeyW'] || keys['ArrowDown'] || keys['KeyS'] || keys['ArrowLeft'] || keys['KeyA'] || keys['ArrowRight'] || keys['KeyD']);
    if (lobbyPath.length > 0 && keyPressed) lobbyPath = [];
    if (lobbyPath.length > 0) {
      const way = lobbyPath[0];
      const dx = way.x - me.x, dy = way.y - me.y;
      const dist = Math.sqrt(dx * dx + dy * dy);
      if (dist <= PATH_ARRIVE_THRESH) {
        lobbyPath.shift();
        while (lobbyPath.length > 0) {
          const w2 = lobbyPath[0];
          const ux = w2.x - me.x, uy = w2.y - me.y;
          if (Math.sqrt(ux * ux + uy * uy) > PATH_ARRIVE_THRESH) break;
          lobbyPath.shift();
        }
        if (lobbyPath.length === 0) { me.isWalking = false; redrawLobbyMap(); requestAnimationFrame(lobbyTick); return; }
        usePath = true;
        const next = lobbyPath[0];
        accX = next.x - me.x;
        accY = next.y - me.y;
      } else {
        usePath = true;
        accX = dx;
        accY = dy;
      }
      if (usePath && (accX !== 0 || accY !== 0)) {
        if (Math.abs(accY) > Math.abs(accX)) me.direction = accY > 0 ? 'down' : 'up';
        else me.direction = accX > 0 ? 'right' : 'left';
      }
    }
    if (!usePath && !isChatFocused()) {
      if (keys['ArrowUp'] || keys['KeyW']) { accY = -1; me.direction = 'up'; }
      if (keys['ArrowDown'] || keys['KeyS']) { accY = 1; me.direction = 'down'; }
      if (keys['ArrowLeft'] || keys['KeyA']) { accX = -1; me.direction = 'left'; }
      if (keys['ArrowRight'] || keys['KeyD']) { accX = 1; me.direction = 'right'; }
    }
    if (accX !== 0 || accY !== 0) {
      const len = Math.sqrt(accX * accX + accY * accY) || 1;
      const step = Math.min(MOVE_SPEED, len);
      const nx = me.x + (accX / len) * step;
      const ny = me.y + (accY / len) * step;
      if (canWalkLobby(nx, ny, me.x, me.y)) {
        me.x = nx;
        me.y = ny;
      } else if (canWalkLobby(nx, me.y, me.x, me.y)) {
        me.x = nx;
      } else if (canWalkLobby(me.x, ny, me.x, me.y)) {
        me.y = ny;
      }
      me.x = Math.max(0, Math.min(w - 0.01, me.x));
      me.y = Math.max(0, Math.min(h - 0.01, me.y));
      const now = Date.now();
      if (now - lastMoveSend > 80) {
        lastMoveSend = now;
        socket.emit('move', { x: me.x, y: me.y, direction: me.direction || 'down' });
      }
    }
    } /* !suspectPickOverlayOpen */
    const movedThisTick = !suspectPickOverlayOpen && (Math.abs(me.x - preWalkX) > 1e-5 || Math.abs(me.y - preWalkY) > 1e-5);
    me.isWalking = suspectPickOverlayOpen ? false : (!!(accX !== 0 || accY !== 0) || lobbyPath.length > 0 || movedThisTick);
    updateHostStartGameButton();
    redrawLobbyMap();
    requestAnimationFrame(lobbyTick);
  }

  function lobbyOccupantCount() {
    return peers.size + lobbyBots.size;
  }

  function lobbyOccupantSlots() {
    return maxPlayers + lobbyBotSlotCount;
  }

  function lobbySpawnTileWalkable(tx, ty) {
    if (!mapData) return false;
    const w = mapData.width || 20;
    const h = mapData.height || 15;
    if (tx < 0 || tx >= w || ty < 0 || ty >= h) return false;
    const row = mapData.objects && mapData.objects[ty];
    return !(row && row[tx] === 1);
  }

  function lobbySpawnFootprintFits(anchorX, anchorY) {
    if (!mapData) return false;
    const cellsW = Math.max(1, Math.min(4, Math.floor(Number(mapData.characterCellsW) || Number(mapData.characterCells) || 1)));
    const cellsH = Math.max(1, Math.min(4, Math.floor(Number(mapData.characterCellsH) || Number(mapData.characterCells) || 1)));
    const w = mapData.width || 20;
    const h = mapData.height || 15;
    const maxX = Math.min(w, anchorX + cellsW);
    const maxY = Math.min(h, anchorY + cellsH);
    for (let ty = anchorY; ty < maxY; ty++) {
      for (let tx = anchorX; tx < maxX; tx++) {
        if (!lobbySpawnTileWalkable(tx, ty)) return false;
      }
    }
    return true;
  }

  function parseLobbyPlayerSpawnsFromMapLobby(md) {
    const w = md.width || 20;
    const h = md.height || 15;
    const out = [null, null, null, null, null, null];
    const raw = md && md.lobbyPlayerSpawns;
    if (!Array.isArray(raw)) return out;
    for (let i = 0; i < 6 && i < raw.length; i++) {
      const cell = raw[i];
      if (!cell || typeof cell !== 'object') continue;
      const x = Math.floor(Number(cell.x));
      const y = Math.floor(Number(cell.y));
      if (!Number.isFinite(x) || !Number.isFinite(y)) continue;
      if (x < 0 || x >= w || y < 0 || y >= h) continue;
      out[i] = { x, y };
    }
    return out;
  }

  function pickRandomLobbySpawnFromMap() {
    const fb = mapData.spawn || { x: 1, y: 1 };
    const fx = Number.isFinite(Number(fb.x)) ? Number(fb.x) : 1;
    const fy = Number.isFinite(Number(fb.y)) ? Number(fb.y) : 1;
    const grid = mapData.spawnArea;
    if (!grid || !Array.isArray(grid)) return { x: fx, y: fy };
    const w = mapData.width || 20;
    const h = mapData.height || 15;
    const pool = [];
    for (let yy = 0; yy < h; yy++) {
      const row = grid[yy];
      if (!row) continue;
      for (let xx = 0; xx < w; xx++) {
        if (Number(row[xx]) === 1 && lobbySpawnFootprintFits(xx, yy)) pool.push({ x: xx, y: yy });
      }
    }
    if (!pool.length) return { x: fx, y: fy };
    const pick = pool[Math.floor(Math.random() * pool.length)];
    return { x: pick.x, y: pick.y };
  }

  /** สอดคล้อง server pickSpawnForJoin — P1…P6 ตามลำดับเข้า */
  function pickLobbySpawnForJoin(joinOrderIndex) {
    if (!mapData) return { x: 1, y: 1 };
    const mode = mapData.lobbySpawnMode;
    const ord = joinOrderIndex | 0;
    if (mode === 'slots6' && ord >= 6) return pickRandomLobbySpawnFromMap();
    const j = Math.min(Math.max(0, ord), 5);
    if (mode === 'fixed' && mapData.spawn) {
      const fx = Number.isFinite(Number(mapData.spawn.x)) ? Math.floor(Number(mapData.spawn.x)) : 1;
      const fy = Number.isFinite(Number(mapData.spawn.y)) ? Math.floor(Number(mapData.spawn.y)) : 1;
      const w = mapData.width || 20;
      const h = mapData.height || 15;
      const x = Math.max(0, Math.min(w - 1, fx));
      const y = Math.max(0, Math.min(h - 1, fy));
      if (lobbySpawnFootprintFits(x, y)) return { x, y };
      return pickRandomLobbySpawnFromMap();
    }
    if (mode === 'slots6') {
      const slots = parseLobbyPlayerSpawnsFromMapLobby(mapData);
      const pick = slots[j];
      if (pick && lobbySpawnFootprintFits(pick.x, pick.y)) return { x: pick.x, y: pick.y };
      return pickRandomLobbySpawnFromMap();
    }
    return pickRandomLobbySpawnFromMap();
  }

  function pickLobbyBotSpawn(index) {
    const sp = pickLobbySpawnForJoin(index);
    return { x: sp.x, y: sp.y };
  }

  function syncLobbyCaseBots() {
    if (!lobbyBotSlotCount || !mapData) {
      lobbyBots.clear();
      return;
    }
    while (lobbyBots.size < lobbyBotSlotCount) {
      const i = lobbyBots.size;
      const id = LOBBY_BOT_PREFIX + i;
      const sp = pickLobbyBotSpawn(peers.size + i);
      const wanderDirs = [[0, -1], [0, 1], [-1, 0], [1, 0]];
      const wd = wanderDirs[Math.floor(Math.random() * wanderDirs.length)];
      const bot = {
        x: sp.x,
        y: sp.y,
        direction: 'down',
        nickname: 'บอท ' + (i + 1),
        ready: true,
        characterId: getStoredCharacterId(),
        isWalking: false,
        botWanderDx: wd[0],
        botWanderDy: wd[1],
        botWanderNextTurn: Date.now() + 400 + Math.floor(Math.random() * 900),
      };
      lobbyBots.set(id, bot);
      var restored = applySavedLobbyBotColors(id, bot);
      if (restored) {
        if (bot.characterId) preloadLobbyTintedCharacter(bot.characterId, bot.colorTheme, bot.colorSkin, function () {});
        if (mapData && canvas) drawLobbyMap();
      } else {
        var botColorIdx = 1 + Math.floor(Math.random() * 8);
        var botSkinIdx = 1 + Math.floor(Math.random() * 3);
        var colorDone = false;
        var skinDone = false;
        function maybeFinishBotTint() {
          if (!colorDone || !skinDone) return;
          saveLobbyBotTint(id, bot);
          if (bot.characterId) preloadLobbyTintedCharacter(bot.characterId, bot.colorTheme, bot.colorSkin, function () {});
        }
        rlSampleSwatch('color', botColorIdx, function (rgb) {
          colorDone = true;
          if (rgb) {
            bot.colorTheme = rgb;
            if (mapData && canvas) drawLobbyMap();
          }
          maybeFinishBotTint();
        });
        rlSampleSwatch('skin', botSkinIdx, function (rgb) {
          skinDone = true;
          if (rgb) {
            bot.colorSkin = rgb;
            if (mapData && canvas) drawLobbyMap();
          }
          maybeFinishBotTint();
        });
      }
    }
    while (lobbyBots.size > lobbyBotSlotCount) {
      const keys = [...lobbyBots.keys()];
      lobbyBots.delete(keys[keys.length - 1]);
    }
    setTimeout(function () {
      try { preloadAllLobbyTintedOccupants(function () {}); } catch (e) { /* ignore */ }
    }, 400);
  }

  function updatePlayersHud() {
    const hudText = 'PLAYERS : ' + lobbyOccupantCount() + '/' + lobbyOccupantSlots();
    if (roomPlayersHud) roomPlayersHud.textContent = hudText;
    const sph = document.getElementById('suspect-players-hud');
    if (sph) sph.textContent = hudText;
  }

  function renderPeers() {
    if (!peersList) return;
    peersList.innerHTML = '';
    const arr = [...peers.values()];
    arr.forEach(p => {
      const div = document.createElement('div');
      div.className = 'room-lobby-peer';
      const name = p.nickname || p.id.slice(0, 8);
      const readyText = p.ready ? ' ✓ พร้อม' : ' ยังไม่พร้อม';
      div.textContent = name + readyText;
      peersList.appendChild(div);
    });
    if (quizModeActive) renderQuizScoreboard(lastQuizScores);
  }

  function getStoredCharacterId() {
    try {
      const v = (localStorage.getItem('gameCharacterId') || '').trim();
      if (v && v !== 'Chatest') return v; // 'Chatest' = legacy placeholder ไม่มี sprite จริง
      return rlDefaultCharId || ''; // ไม่มีตัวที่เลือก → ใช้ตัว default ที่มี sprite จริง
    } catch (e) {
      return rlDefaultCharId || '';
    }
  }

  function updateLobbyProfileAvatar() {
    const img = document.getElementById('room-lobby-profile-avatar');
    if (!img) return;
    const id = getStoredCharacterId();
    if (!id) {
      img.removeAttribute('src');
      img.alt = (profileDisplayName || nick || 'ผู้เล่น');
      return;
    }
    if (myTintTheme || myTintSkin) { updateRoomProfileAvatarTinted(); return; } // ใช้รูป tint สี กันถูกเขียนทับเป็นรูป baked
    try {
      const du = localStorage.getItem(LOBBY_IDLE_DOWN_LS + id);
      if (du && typeof du === 'string' && du.indexOf('data:image/') === 0) {
        img.onload = null;
        img.onerror = null;
        img.src = du;
        img.alt = (profileDisplayName || nick || 'ผู้เล่น') + ' — ตัวละคร';
        return;
      }
    } catch (e) { /* ignore */ }
    const urls = characterSpriteUrlCandidates(id, 'down');
    let uidx = 0;
    img.alt = (profileDisplayName || nick || 'ผู้เล่น') + ' — ตัวละคร';
    img.onerror = function () {
      uidx += 1;
      if (uidx >= urls.length) {
        img.onerror = null;
        img.removeAttribute('src');
        return;
      }
      img.src = urls[uidx];
    };
    img.onload = function () {
      img.onerror = null;
    };
    img.src = urls[0];
  }

  function loadProfileDisplayName() {
    try {
      const saved = (localStorage.getItem(DISPLAY_NAME_STORAGE_KEY) || '').trim();
      if (saved) profileDisplayName = saved;
    } catch (e) { /* ignore */ }
  }

  function saveProfileDisplayName(nextName) {
    const safeName = String(nextName || '').trim();
    if (!safeName) return;
    profileDisplayName = safeName;
    try { localStorage.setItem(DISPLAY_NAME_STORAGE_KEY, safeName); } catch (e) { /* ignore */ }
  }

  function getProfileDisplayName() {
    const me = peers.get(socket.id);
    const serverName = me && typeof me.nickname === 'string' ? me.nickname.trim() : '';
    if (serverName) return serverName;
    return profileDisplayName || nick || 'PLAYER';
  }
  window.getProfileDisplayName = getProfileDisplayName;

  loadProfileDisplayName();

  function padAgentId(n) {
    let s = String(n || '');
    while (s.length < 6) s = '0' + s;
    return s;
  }

  function ensureAgentDisplayId() {
    const key = 'agentDisplayId';
    try {
      let v = (localStorage.getItem(key) || '').trim();
      if (!/^\d{6}$/.test(v)) {
        v = padAgentId(100000 + Math.floor(Math.random() * 899999));
        localStorage.setItem(key, v);
      }
      return v;
    } catch (e) {
      return padAgentId(100000 + Math.floor(Math.random() * 899999));
    }
  }

  function ensurePlayerKey() {
    try {
      let k = (localStorage.getItem(PLAYER_KEY) || '').trim();
      if (!k || k.length < 8) {
        k = 'p_' + Date.now() + '_' + Math.random().toString(36).slice(2, 14);
        localStorage.setItem(PLAYER_KEY, k);
      }
      return k;
    } catch (e) {
      return 'p_' + Date.now() + '_' + Math.random().toString(36).slice(2, 14);
    }
  }

  function getStoredCoins() {
    try {
      const raw = localStorage.getItem('jdCoins');
      const n = Math.max(0, parseInt(raw, 10) || 0);
      return n;
    } catch (e) {
      return 0;
    }
  }

  function syncLobbyAvatarFromStorage() {
    updateLobbyProfileAvatar();
    if (typeof redrawLobbyMap === 'function') redrawLobbyMap();
  }

  class RoomLobbyProfileOverlay {
    constructor() {
      this.overlay = document.getElementById('room-lobby-profile-overlay');
      this.backdrop = document.getElementById('room-lobby-profile-backdrop');
      this.closeBtn = document.getElementById('room-lobby-profile-close');
      this.dialogEl = document.querySelector('.room-lobby-profile-dialog');
      this.innerFrameEl = document.querySelector('.room-lobby-profile-inner-frame');
      this.coinsRowEl = document.querySelector('.room-lobby-profile-coins');
      this.coinsLabelEl = document.querySelector('.room-lobby-profile-coins-label');
      this.coinsIconEl = document.querySelector('.room-lobby-profile-coins-icon');
      this.avatarEl = document.getElementById('room-lobby-profile-overlay-avatar');
      this.nameEl = document.getElementById('room-lobby-profile-overlay-name');
      this.agentEl = document.getElementById('room-lobby-profile-overlay-agent');
      this.coinsEl = document.getElementById('room-lobby-profile-coins-val');
      this.musicBtn = document.getElementById('room-lobby-profile-music');
      this.sfxBtn = document.getElementById('room-lobby-profile-sfx');
      this.archivGroupBtns = Array.from(document.querySelectorAll('.room-lobby-profile-archiv-group-btn'));
      this.archivListEl = document.getElementById('room-lobby-profile-achievements-list');
      this.archivScrollEl = document.querySelector('.room-lobby-profile-archiv-scroll');
      this.archivScrollBarEl = document.querySelector('.room-lobby-profile-archiv-scroll-bar');
      this.editBtn = document.getElementById('room-lobby-profile-edit-btn');
      this.activeArchivGroup = 1;
      this._boundSyncProfileFrameScale = () => this._syncProfileFrameScale();
      this._profileFrameScaleObserver = null;
      this._bindEvents();
      this._initProfileFrameScaleObserver();
      this._syncProfileFrameScale();
      this._applySwitchVisual(this.musicBtn, true);
      this._applySwitchVisual(this.sfxBtn, false);
      this._setArchivGroup(1);
      this._syncCoinsFromServer();
    }

    _bindEvents() {
      this.backdrop?.addEventListener('click', () => this.close());
      this.closeBtn?.addEventListener('click', () => this.close());
      this.musicBtn?.addEventListener('click', () => this._toggleChip(this.musicBtn));
      this.sfxBtn?.addEventListener('click', () => this._toggleChip(this.sfxBtn));
      this.archivGroupBtns.forEach((btn) => {
        btn.addEventListener('click', () => {
          const raw = parseInt(btn.getAttribute('data-group'), 10);
          this._setArchivGroup(Number.isFinite(raw) ? raw : 1);
        });
      });
      this.editBtn?.addEventListener('click', () => this._editDisplayName());
      this.archivListEl?.addEventListener('scroll', () => this._syncArchivScroll(), { passive: true });
      window.addEventListener('resize', this._boundSyncProfileFrameScale);
    }

    _syncArchivScroll() {
      if (!this.archivListEl || !this.archivScrollEl || !this.archivScrollBarEl) return;
      const total = this.archivListEl.scrollHeight || 0;
      const visible = this.archivListEl.clientHeight || 0;
      const overflow = total > visible + 1;
      this.archivScrollEl.classList.toggle('is-hidden', !overflow);
      this.archivScrollEl.setAttribute('aria-hidden', overflow ? 'false' : 'true');
      if (!overflow) return;
      const max = Math.max(1, total - visible);
      const ratio = Math.max(0, Math.min(1, this.archivListEl.scrollTop / max));
      const barPct = Math.max(18, Math.min(42, (visible / Math.max(1, total)) * 100));
      this.archivScrollBarEl.style.height = barPct.toFixed(2) + '%';
      this.archivScrollBarEl.style.top = ((100 - barPct) * ratio).toFixed(2) + '%';
    }

    _initProfileFrameScaleObserver() {
      if (!this.innerFrameEl) return;
      if (typeof ResizeObserver === 'undefined') return;
      this._profileFrameScaleObserver = new ResizeObserver(() => this._syncProfileFrameScale());
      this._profileFrameScaleObserver.observe(this.innerFrameEl);
    }

    _syncProfileFrameScale() {
      let dialogScale = 1;
      if (this.dialogEl) {
        const rect = this.dialogEl.getBoundingClientRect();
        if (rect.width > 0 && rect.height > 0) {
          const scaleW = rect.width / 1701;
          const scaleH = rect.height / 951;
          dialogScale = Math.max(0.35, Math.min(1, Math.min(scaleW, scaleH)));
          this.dialogEl.style.setProperty('--rp-scale', String(dialogScale.toFixed(4)));
        }
      }
      if (!this.innerFrameEl) return;
      this.innerFrameEl.style.setProperty('--pf-scale', String(dialogScale.toFixed(4)));
      this._syncArchivScroll();
    }

    _toggleChip(btn) {
      if (!btn) return;
      const current = String(btn.getAttribute('data-on') || '').toLowerCase() === 'true';
      this._applySwitchVisual(btn, !current);
    }

    _applySwitchVisual(btn, isOn) {
      if (!btn) return;
      const on = !!isOn;
      btn.setAttribute('data-on', on ? 'true' : 'false');
      const img = btn.querySelector('img');
      if (!img) return;
      const nextSrc = on ? 'img/03-6-Profile/btn-on.png' : 'img/03-6-Profile/btn-off.png';
      img.src = nextSrc;
      img.alt = on ? 'เปิด' : 'ปิด';
    }

    _setArchivGroup(groupIndex) {
      let idx = parseInt(groupIndex, 10);
      if (!Number.isFinite(idx) || idx < 1 || idx > 5) idx = 1;
      this.activeArchivGroup = idx;
      this.archivGroupBtns.forEach((btn) => {
        const raw = parseInt(btn.getAttribute('data-group'), 10);
        const id = Number.isFinite(raw) ? raw : 1;
        const active = id === idx;
        btn.classList.toggle('is-active', active);
        const img = btn.querySelector('img');
        if (!img) return;
        img.src = active
          ? 'img/03-6-Profile/archiv-group-0' + id + '-a.png'
          : 'img/03-6-Profile/archiv-group-0' + id + '.png';
      });
      this._syncArchivScroll();
    }

    setProfileData(data) {
      const payload = data || {};
      const avatarSrc = payload.avatarSrc || document.getElementById('room-lobby-profile-avatar')?.src || '';
      if (this.avatarEl && avatarSrc) this.avatarEl.src = avatarSrc;
      if (this.nameEl) this.nameEl.textContent = payload.displayName || getProfileDisplayName();
      const agentId = payload.agentIdLabel || ('AGENT ID : ' + ensureAgentDisplayId());
      if (this.agentEl) this.agentEl.textContent = agentId;
      const coinsVal = payload.coins != null ? payload.coins : getStoredCoins();
      if (this.coinsEl) this.coinsEl.textContent = String(Math.max(0, parseInt(coinsVal, 10) || 0));
    }

    _syncCoinsFromServer() {
      const key = ensurePlayerKey();
      const url = (typeof appPath === 'function' ? appPath('/Admin/api/player-coins.php') : '/Admin/api/player-coins.php')
        + '?playerKey=' + encodeURIComponent(key);
      fetch(url, { credentials: 'omit' })
        .then((r) => r.json())
        .then((d) => {
          if (!d || !d.ok) return;
          const coins = Math.max(0, parseInt(d.coins, 10) || 0);
          try { localStorage.setItem('jdCoins', String(coins)); } catch (e) { /* ignore */ }
          if (this.coinsEl) this.coinsEl.textContent = String(coins);
        })
        .catch(() => { /* ignore */ });
    }

    _editDisplayName() {
      const self = this;
      const currentName = getProfileDisplayName();

      function afterRename(nextName) {
        if (!nextName) return;
        saveProfileDisplayName(nextName);
        self.setProfileData({ displayName: nextName });
        updateLobbyProfileAvatar();
        renderPeers();
        updatePlayersHud();
        refreshHostConsoleOverlayIfOpen();
      }

      if (window.jdDisplayName && typeof window.jdDisplayName.openEditor === 'function') {
        window.jdDisplayName.openEditor({ initialValue: currentName }).then(function (draft) {
          if (draft == null) return;
          if (typeof window.jdApplyDisplayNameChange === 'function') {
            const result = window.jdApplyDisplayNameChange(draft, { socket });
            if (result.ok) afterRename(result.displayName);
            return;
          }
          afterRename(draft);
        });
        return;
      }

      const draft = window.prompt('แก้ไขชื่อผู้เล่น', currentName || '');
      if (draft == null) return;
      const nextName = String(draft).trim();
      if (!nextName) {
        alert('กรุณากรอกชื่อผู้เล่น');
        return;
      }
      if (typeof window.jdApplyDisplayNameChange === 'function') {
        const result = window.jdApplyDisplayNameChange(nextName, { socket });
        if (!result.ok) return;
        afterRename(result.displayName);
        return;
      }
      afterRename(nextName);
    }

    open(data) {
      if (!this.overlay) return;
      this.setProfileData(data);
      this._syncCoinsFromServer();
      this.overlay.classList.remove('is-hidden');
      this.overlay.setAttribute('aria-hidden', 'false');
      this._syncProfileFrameScale();
      requestAnimationFrame(() => this._syncProfileFrameScale());
      requestAnimationFrame(() => requestAnimationFrame(() => this._syncProfileFrameScale()));
      this._syncArchivScroll();
      this.closeBtn?.focus();
    }

    close() {
      if (!this.overlay) return;
      this.overlay.classList.add('is-hidden');
      this.overlay.setAttribute('aria-hidden', 'true');
    }

    toggle(force, data) {
      if (!this.overlay) return;
      const shouldOpen = typeof force === 'boolean' ? force : this.overlay.classList.contains('is-hidden');
      if (shouldOpen) this.open(data);
      else this.close();
    }
  }

  const roomLobbyProfileOverlay = new RoomLobbyProfileOverlay();
  window.RoomLobbyProfileOverlay = RoomLobbyProfileOverlay;
  window.roomLobbyProfileOverlay = roomLobbyProfileOverlay;

  class HostConsoleOverlay {
    constructor() {
      this.overlay = document.getElementById('host-console-overlay');
      this.backdrop = document.getElementById('host-console-backdrop');
      this.dialogEl = document.querySelector('.room-lobby-host-console-dialog');
      this.closeBtn = document.getElementById('host-console-close');
      this.confirmBtn = document.getElementById('host-console-confirm');
      this.decBtn = document.getElementById('host-console-max-dec');
      this.incBtn = document.getElementById('host-console-max-inc');
      this.maxValueEl = document.getElementById('host-console-max-value');
      this.summaryEl = document.getElementById('host-console-summary');
      this.membersListEl = document.getElementById('host-console-members-list');
      this.pendingMaxPlayers = maxPlayers;
      this._boundSyncScale = () => this._syncScale();
      this._scaleObserver = null;
      this._bindEvents();
      this._initScaleObserver();
      this._syncScale();
    }

    _bindEvents() {
      // Close only via the X hit area button (and Esc key handler).
      this.closeBtn?.addEventListener('click', () => this.close());
      this.decBtn?.addEventListener('click', () => this._changeMax(-1));
      this.incBtn?.addEventListener('click', () => this._changeMax(1));
      this.confirmBtn?.addEventListener('click', () => this._confirm());
      window.addEventListener('resize', this._boundSyncScale);
    }

    _initScaleObserver() {
      if (!this.dialogEl) return;
      if (typeof ResizeObserver === 'undefined') return;
      this._scaleObserver = new ResizeObserver(() => this._syncScale());
      this._scaleObserver.observe(this.dialogEl);
    }

    _syncScale() {
      if (!this.dialogEl) return;
      const w = this.dialogEl.clientWidth || 0;
      const h = this.dialogEl.clientHeight || 0;
      if (!w || !h) return;
      const scaleW = w / 990;
      const scaleH = h / 881;
      const scale = Math.max(0.5, Math.min(1.08, Math.min(scaleW, scaleH)));
      this.dialogEl.style.setProperty('--hc-scale', String(scale.toFixed(4)));
    }

    _isHost() {
      return hostId === socket.id;
    }

    _getPlayersCount() {
      return Math.max(0, peers.size);
    }

    _changeMax(delta) {
      if (!this._isHost()) return;
      const humans = this._getPlayersCount();
      const minAllowed = Math.max(humans, 2);
      const next = this.pendingMaxPlayers + delta;
      this.pendingMaxPlayers = Math.max(minAllowed, Math.min(LOBBY_SLOT_TOTAL, next));
      this._render();
    }

    _kickMember(row) {
      if (!this._isHost()) return;
      if (!row || !row.id || row.isHost) return;
      socket.emit('host-console-kick-peer', { targetId: row.id }, (res) => {
        if (!res || !res.ok) {
          var msg = (res && res.error) ? res.error : 'ลบสมาชิกไม่สำเร็จ';
          try { alert(msg); } catch (e) { /* ignore */ }
          return;
        }
      });
    }

    _renderMembers() {
      if (!this.membersListEl) return;
      this.membersListEl.textContent = '';
      const rows = [...peers.entries()].map(([id, p]) => ({
        id,
        isHost: id === hostId,
        name: (p && p.nickname) ? String(p.nickname).trim() : id.slice(0, 8)
      }));
      rows.sort((a, b) => {
        if (a.isHost && !b.isHost) return -1;
        if (!a.isHost && b.isHost) return 1;
        return a.name.localeCompare(b.name, 'th');
      });

      const frag = document.createDocumentFragment();
      rows.forEach((row) => {
        const li = document.createElement('li');
        li.className = 'room-lobby-host-console-member-item' + (row.isHost ? ' is-host' : '');

        const name = document.createElement('span');
        name.className = 'room-lobby-host-console-member-name';
        name.textContent = row.isHost ? (row.name + ' (Host)') : row.name;
        li.appendChild(name);

        if (!row.isHost) {
          const delBtn = document.createElement('button');
          delBtn.type = 'button';
          delBtn.className = 'room-lobby-host-console-delete-btn';
          delBtn.disabled = !this._isHost();
          delBtn.setAttribute('aria-label', 'ลบสมาชิก ' + row.name);
          const delImg = document.createElement('img');
          delImg.src = 'img/03-4-Host-Console/host-console-delete.png';
          delImg.alt = '';
          delImg.decoding = 'async';
          delBtn.appendChild(delImg);
          delBtn.addEventListener('click', () => this._kickMember(row));
          li.appendChild(delBtn);
        }
        frag.appendChild(li);
      });
      this.membersListEl.appendChild(frag);
    }

    _render() {
      const players = this._getPlayersCount();
      const bots = Math.max(0, this.pendingMaxPlayers - players);
      if (this.maxValueEl) this.maxValueEl.textContent = String(this.pendingMaxPlayers);
      if (this.summaryEl) this.summaryEl.textContent = 'สรุปจำนวน : ' + players + ' ผู้เล่น + ' + bots + ' Bot';
      this._renderMembers();

      const canEdit = this._isHost();
      if (this.decBtn) this.decBtn.disabled = !canEdit;
      if (this.incBtn) this.incBtn.disabled = !canEdit;
      if (this.confirmBtn) this.confirmBtn.disabled = !canEdit;
    }

    _confirm() {
      if (!this._isHost()) return;
      const humans = this._getPlayersCount();
      const total = Math.min(LOBBY_SLOT_TOTAL, Math.max(humans, this.pendingMaxPlayers));
      const bots = total - humans;
      lobbyBotSlotCount = bots;
      maxPlayers = Math.max(humans, total - bots);
      this.pendingMaxPlayers = total;
      syncLobbyCaseBots();
      updatePlayersHud();
      if (mapData && canvas) drawLobbyMap();
      const self = this;
      socket.emit('host-console-apply', {
        totalSlots: total,
        botSlotCount: bots,
        maxPlayers: maxPlayers
      }, function (res) {
        if (!res || !res.ok) {
          var msg = (res && res.error) ? res.error : 'บันทึกการตั้งค่าไม่สำเร็จ';
          try { alert(msg); } catch (e) { /* ignore */ }
          return;
        }
        if (res.maxPlayers != null) maxPlayers = res.maxPlayers;
        if (res.botSlotCount != null) {
          lobbyBotSlotCount = Math.max(0, parseInt(res.botSlotCount, 10) || 0);
          syncLobbyCaseBots();
          updatePlayersHud();
          if (mapData && canvas) drawLobbyMap();
        }
        self.close();
      });
    }

    open() {
      if (!this.overlay) return;
      if (!this._isHost()) return;
      const totalNow = Math.min(LOBBY_SLOT_TOTAL, Math.max(peers.size, lobbyOccupantCount()));
      this.pendingMaxPlayers = totalNow > 0 ? totalNow : Math.min(LOBBY_SLOT_TOTAL, Math.max(2, (maxPlayers || 2) + (lobbyBotSlotCount || 0)));
      this._render();
      this.overlay.classList.remove('is-hidden');
      this.overlay.setAttribute('aria-hidden', 'false');
      this._syncScale();
      requestAnimationFrame(() => this._syncScale());
      this.closeBtn?.focus();
    }

    close() {
      if (!this.overlay) return;
      this.overlay.classList.add('is-hidden');
      this.overlay.setAttribute('aria-hidden', 'true');
    }
  }

  const hostConsoleOverlay = new HostConsoleOverlay();
  window.hostConsoleOverlay = hostConsoleOverlay;
  function refreshHostConsoleOverlayIfOpen() {
    if (!hostConsoleOverlay || !hostConsoleOverlay.overlay) return;
    if (hostConsoleOverlay.overlay.classList.contains('is-hidden')) return;
    hostConsoleOverlay._render();
  }

  function applyPeerDisplayNameUpdate(data) {
    if (!data || !data.id) return;
    const p = peers.get(data.id);
    if (p) p.nickname = data.nickname;
    if (data.id === socket.id) {
      saveProfileDisplayName(data.nickname);
      try { localStorage.setItem('playerName', data.nickname); } catch (e) { /* ignore */ }
      if (window.jdDisplayName && typeof window.jdDisplayName.syncDom === 'function') {
        window.jdDisplayName.syncDom(data.nickname);
      }
    }
    renderPeers();
    updatePlayersHud();
    refreshHostConsoleOverlayIfOpen();
  }

  socket.on('peer-display-name', applyPeerDisplayNameUpdate);

  socket.on('connect', () => {
    socket.emit('join-space', { spaceId, nickname: getProfileDisplayName(), characterId: getStoredCharacterId() }, (res) => {
      if (!res || !res.ok) {
        var joinErr = (res && res.error) || 'เข้าไม่ได้';
        if (/เริ่มคดี|ไม่รับผู้เล่น/.test(joinErr)) {
          alert(joinErr + '\n\nถ้าคุณเคยอยู่ในห้องนี้แล้ว: ให้ใช้ nick ในลิงก์ให้ตรงกับชื่อที่ใช้ตอนเข้าห้องครั้งแรก แล้วรีเฟรชหน้า');
        } else {
          alert(joinErr);
        }
        location.href = DESIGN_MENU;
        return;
      }
      mapData = res.mapData;
      roomJoinReady = true;
      maybeHideRoomLoading();
      markRoomCzInteractiveCell();
      markHostHcInteractiveCell();
      if (ROOM_CZ_SPOT) appendLobbySystemChat('— เดินไปช่องเขียว แล้วกด F เพื่อเปิดห้องแต่งตัว');
      if (ROOM_HC_SPOT && hostId === socket.id) appendLobbySystemChat('— เดินไปจุดโฮสต์ (ไอคอนชมพู) แล้วกด F เพื่อเปิด Host Console');
      clientLobbyMapId = res.mapId != null ? res.mapId : null;
      hostId = res.hostId || null;
      spaceName = (res.spaceName || '').trim() || spaceId;
      (res.peers || []).forEach(p => { peers.set(p.id, normalizeLobbyPeerFromServer(p, mapData)); });

      if (mapData && mapData.backgroundImage) {
        mapBackgroundImg = new Image();
        mapBackgroundImg.src = mapData.backgroundImage;
        mapBackgroundImg.onload = () => { resizeAndDraw(); };
      }
      if (!mapData.interactive) mapData.interactive = [];
      if (!mapData.startGameArea) mapData.startGameArea = [];
      if (!mapData.quizTrueArea) mapData.quizTrueArea = [];
      if (!mapData.quizFalseArea) mapData.quizFalseArea = [];
      if (!mapData.quizQuestionArea) mapData.quizQuestionArea = [];

      maxPlayers = res.maxPlayers != null ? res.maxPlayers : 10;
      lobbyBotSlotCount = res.botSlotCount != null ? Math.max(0, parseInt(res.botSlotCount, 10) || 0) : 0;
      if (lobbyBotSlotCount === 0 && maxPlayers > 0 && maxPlayers < 6) {
        lobbyBotSlotCount = 6 - maxPlayers;
      }
      if (lobbyBotSlotCount > 0) syncLobbyCaseBots();
      updatePlayersHud();
      syncLobbyBUiChrome();

      if (wasPageReload() && (hostId === socket.id || peers.size <= 1)) {
        window.location.replace(CREATE_ROOM_URL);
        return;
      }

      renderPeers();
      updateLobbyProfileAvatar();
      var meAfterJoin = peers.get(socket.id);
      if (readyCheck && meAfterJoin) {
        readyCheck.checked = !!meAfterJoin.ready;
        updateReadyLabelVisual();
      }
      ensureReadyControlEnabled();

      if (res.cardMinigames) setSuspectCardMinigames(res.cardMinigames);
      if (Array.isArray(res.suspectProgress)) setSuspectProgress(res.suspectProgress);
      serverSuspectPhaseActive = !!res.suspectPhaseActive;
      if (res.suspectPhaseActive) {
        openSuspectOverlay(res.suspectPickIndex != null ? res.suspectPickIndex : 0);
      } else {
        updateSuspectFloatingOpenBtn();
      }
      if (clientLobbyMapId === POST_CASE_LOBBY_SPACE_ID || res.suspectPhaseActive) {
        try {
          var uLobbyB = new URL(window.location.href);
          uLobbyB.searchParams.set('map', POST_CASE_LOBBY_SPACE_ID);
          history.replaceState({}, '', uLobbyB.pathname + uLobbyB.search);
        } catch (eMap) { /* ignore */ }
      }

      const isHost = hostId === socket.id;
      if (hostOnly) hostOnly.style.display = isHost ? 'flex' : 'none';
      if (nonHostMsg) nonHostMsg.style.display = isHost ? 'none' : 'inline';

      if (isHost && playMapSelect) {
        fetch(SERVER + '/api/maps')
          .then(r => r.json())
          .then(list => {
            playMapSelect.innerHTML = '<option value="">— เลือกฉากสำหรับเล่น —</option>';
            (list || []).forEach(m => {
              const opt = document.createElement('option');
              opt.value = m.id;
              opt.textContent = m.name || m.id;
              if (m.name) opt.dataset.mapName = m.name;
              playMapSelect.appendChild(opt);
            });
          })
          .catch(() => { playMapSelect.innerHTML = '<option value="">โหลดฉากไม่ได้</option>'; });
      }

      resizeAndDraw();
      updateHostStartGameButton();
      syncLobbyBUiChrome();
      lobbyTick();

      setTimeout(() => {
        unlockAudio();
        const hearBtn = document.getElementById('btn-hear');
        if (hearBtn) { hearBtn.textContent = '✓ เปิดรับเสียงแล้ว'; hearBtn.disabled = true; }
        if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) return;
        navigator.mediaDevices.getUserMedia({ audio: true }).then(stream => {
          stream.getTracks().forEach(t => t.stop());
          const permBtn = document.getElementById('btn-voice-permission');
          if (permBtn) { permBtn.textContent = '✓ อนุญาตแล้ว'; permBtn.disabled = true; }
          if (typeof populateVoiceDevices === 'function') populateVoiceDevices();
        }).catch(() => {});
      }, 600);
    });
  });

  const LERP = 0.2;
  socket.on('user-joined', (data) => {
    peers.set(data.id, normalizeLobbyPeerFromServer(data, mapData));
    updatePlayersHud();
    renderPeers();
    redrawLobbyMap();
  });

  socket.on('user-left', (data) => {
    if (typeof closePeer === 'function') closePeer(data.id);
    peers.delete(data.id);
    updatePlayersHud();
    renderPeers();
    redrawLobbyMap();
  });

  socket.on('host-console-kicked', (data) => {
    var msg = (data && data.message) ? String(data.message) : 'คุณถูก Host นำออกจากห้อง';
    try { alert(msg); } catch (e) { /* ignore */ }
    window.location.href = CREATE_ROOM_URL;
  });

  socket.on('host-console-settings', (data) => {
    if (!data || typeof data !== 'object') return;
    if (data.maxPlayers != null) maxPlayers = Math.max(peers.size, parseInt(data.maxPlayers, 10) || peers.size);
    if (data.botSlotCount != null) {
      lobbyBotSlotCount = Math.max(0, parseInt(data.botSlotCount, 10) || 0);
      syncLobbyCaseBots();
    }
    updatePlayersHud();
    refreshHostConsoleOverlayIfOpen();
    if (mapData && canvas) drawLobbyMap();
  });

  socket.on('peer-ready', (data) => {
    const p = peers.get(data.id);
    if (p) { p.ready = data.ready; renderPeers(); redrawLobbyMap(); }
    if (data && data.id === socket.id && readyCheck) {
      readyCheck.checked = !!data.ready;
      updateReadyLabelVisual();
    }
    ensureReadyControlEnabled();
  });

  socket.on('user-move', (data) => {
    const p = peers.get(data.id);
    if (p) {
      if (data.id === socket.id) {
        if (data.x != null) {
          const x = Number(data.x);
          if (Number.isFinite(x)) { p.x = x; p.tx = x; }
        }
        if (data.y != null) {
          const y = Number(data.y);
          if (Number.isFinite(y)) { p.y = y; p.ty = y; }
        }
      } else {
        if (data.x != null) p.tx = data.x;
        if (data.y != null) p.ty = data.y;
      }
      if (data.direction) p.direction = data.direction;
      if (data.characterId != null) p.characterId = data.characterId;
      redrawLobbyMap();
    }
  });

  function hideQuizScoreboardAndFeedback() {
    var fb = document.getElementById('quiz-feedback-banner');
    if (fb) { fb.classList.add('is-hidden'); fb.textContent = ''; }
  }

  function renderQuizScoreboard(scores) {
    var ov = document.getElementById('quiz-game-overlay');
    var ul = document.getElementById('quiz-scoreboard-list');
    if (!ul) return;
    if (!quizModeActive) {
      if (ov) ov.classList.add('is-hidden');
      return;
    }
    if (ov) ov.classList.remove('is-hidden');
    var merged = scores && typeof scores === 'object' ? Object.assign({}, scores) : {};
    peers.forEach(function (_, id) {
      if (merged[id] == null) merged[id] = 0;
    });
    ul.textContent = '';
    var rows = [];
    peers.forEach(function (p, id) {
      rows.push({
        id: id,
        nick: (p && p.nickname) ? String(p.nickname) : id,
        sc: merged[id] != null ? merged[id] : 0,
        characterId: p && p.characterId ? String(p.characterId) : '',
      });
    });
    rows.sort(function (a, b) {
      if (b.sc !== a.sc) return b.sc - a.sc;
      return a.nick.localeCompare(b.nick, 'th');
    });
    rows.forEach(function (row) {
      var li = document.createElement('li');
      if (row.id === socket.id) li.className = 'quiz-scoreboard-me';
      var av = document.createElement(row.characterId ? 'img' : 'div');
      av.className = 'quiz-sb-avatar';
      if (row.characterId) {
        av.alt = '';
        var duSb = '';
        try {
          duSb = localStorage.getItem(LOBBY_IDLE_DOWN_LS + row.characterId) || '';
        } catch (eDu) { duSb = ''; }
        if (duSb && duSb.indexOf('data:image/') === 0) {
          av.src = duSb;
        } else {
          var urlsSb = characterSpriteUrlCandidates(row.characterId, 'down');
          var qi = 0;
          av.onerror = function () {
            qi += 1;
            if (qi >= urlsSb.length) {
              av.onerror = null;
              av.removeAttribute('src');
              return;
            }
            av.src = urlsSb[qi];
          };
          av.src = urlsSb[0];
        }
      }
      var meta = document.createElement('div');
      meta.className = 'quiz-sb-meta';
      var spName = document.createElement('span');
      spName.className = 'quiz-scoreboard-name';
      spName.textContent = row.nick;
      var spVal = document.createElement('span');
      spVal.className = 'quiz-scoreboard-val';
      spVal.textContent = String(row.sc);
      meta.appendChild(spName);
      meta.appendChild(spVal);
      li.appendChild(av);
      li.appendChild(meta);
      ul.appendChild(li);
    });
  }

  function initQuizScoreboardZeros() {
    if (!quizModeActive) return;
    lastQuizScores = {};
    peers.forEach(function (_, id) { lastQuizScores[id] = 0; });
    renderQuizScoreboard(lastQuizScores);
  }

  function showQuizRoundFeedback(r) {
    var el = document.getElementById('quiz-feedback-banner');
    if (!el || !r || !r.results) return;
    var mine = null;
    for (var i = 0; i < r.results.length; i++) {
      if (r.results[i].id === socket.id) { mine = r.results[i]; break; }
    }
    if (!mine) return;
    el.classList.remove('is-hidden');
    if (mine.right) {
      el.className = 'quiz-feedback-banner quiz-feedback-ok';
      el.textContent = 'คุณตอบถูก · คะแนนรวม ' + (typeof mine.score === 'number' ? mine.score : 0) + ' แต้ม';
    } else {
      el.className = 'quiz-feedback-banner quiz-feedback-bad';
      if (mine.choice == null) {
        el.textContent = 'คุณไม่ได้ยืนในโซนตอบ (จริง/เท็จ) — นับเป็นผิด';
      } else {
        el.textContent = 'คุณตอบผิด — กลับจุดเกิด และเข้าโซนตอบไม่ได้อีกในเกมนี้';
      }
    }
    if (typeof window.__quizFeedbackHideT === 'number') clearTimeout(window.__quizFeedbackHideT);
    window.__quizFeedbackHideT = setTimeout(function () {
      el.classList.add('is-hidden');
    }, 4200);
  }

  function showQuizOverlay() {
    var ov = document.getElementById('quiz-game-overlay');
    if (ov) ov.classList.remove('is-hidden');
  }
  function hideQuizOverlay() {
    var ov = document.getElementById('quiz-game-overlay');
    if (ov) ov.classList.add('is-hidden');
    if (quizTimerInterval) { clearInterval(quizTimerInterval); quizTimerInterval = null; }
    var panel = document.getElementById('quiz-map-question-panel');
    if (panel) {
      panel.classList.add('is-hidden');
      panel.setAttribute('aria-hidden', 'true');
    }
    hideQuizScoreboardAndFeedback();
  }
  function updateQuizTimerDisplay() {
    var el = document.getElementById('quiz-game-timer');
    if (!el || !quizPhaseEndsAt) return;
    var s = Math.max(0, Math.ceil((quizPhaseEndsAt - Date.now()) / 1000));
    el.textContent = String(s);
  }

  socket.on('quiz-phase', function (p) {
    if (!p) return;
    if (p.text) lastQuizQuestionText = p.text;
    quizPhaseLocal = p.phase;
    quizPhaseEndsAt = p.endsAt || 0;
    lastQuizQIdx = typeof p.questionIndex === 'number' ? p.questionIndex : 0;
    lastQuizQTotal = typeof p.questionTotal === 'number' ? p.questionTotal : 0;
    var phaseEl = document.getElementById('quiz-game-phase-label');
    var qEl = document.getElementById('quiz-game-question');
    var numEl = document.getElementById('quiz-hud-quiz-num');
    if (numEl) {
      numEl.textContent = '- Quiz ' + (p.questionIndex || '—') + ' / ' + (p.questionTotal || '—') + ' -';
    }
    if (phaseEl) {
      phaseEl.textContent = p.phase === 'read'
        ? 'อ่านคำถาม'
        : 'เดินเข้าโซน SAFE (จริง) หรือ SCAM (เท็จ)';
    }
    if (qEl) qEl.textContent = lastQuizQuestionText || '';
    showQuizOverlay();
    if (quizTimerInterval) clearInterval(quizTimerInterval);
    quizTimerInterval = setInterval(updateQuizTimerDisplay, 200);
    updateQuizTimerDisplay();
    if (Object.keys(lastQuizScores).length) renderQuizScoreboard(lastQuizScores);
    redrawLobbyMap();
  });

  socket.on('quiz-player-state', function (st) {
    if (!st) return;
    quizPlayerLocal = {
      cannotTrue: !!st.cannotTrue,
      cannotFalse: !!st.cannotFalse,
      eliminated: !!st.eliminated,
      score: typeof st.score === 'number' ? st.score : (quizPlayerLocal.score || 0),
    };
    redrawLobbyMap();
  });

  socket.on('quiz-result', function (r) {
    if (!r) return;
    var correct = r.correctTrue ? 'เฉลยข้อนี้: ถูก = จริง' : 'เฉลยข้อนี้: ถูก = เท็จ';
    var line = '— ข้อ ' + (r.questionIndex || '') + ' ' + correct;
    if (r.allWrong) line += ' · ทุกคนผิด — จบเกม';
    appendLobbySystemChat(line);
    if (r.results) {
      r.results.forEach(function (row) {
        if (!row.right) quizPeersLocked[row.id] = true;
      });
    }
    if (r.scores) {
      lastQuizScores = r.scores;
      renderQuizScoreboard(lastQuizScores);
    }
    showQuizRoundFeedback(r);
    if (r.results) {
      r.results.forEach(function (row) {
        if (row.id === socket.id) {
          var det = row.right ? 'ถูก' : 'ผิด';
          if (!row.right && row.choice == null) det += ' (ไม่ได้ยืนในโซน)';
          appendLobbySystemChat('— คุณตอบ' + det + ' · คะแนนรวม ' + (typeof row.score === 'number' ? row.score : 0));
        }
      });
    }
    redrawLobbyMap();
  });

  socket.on('quiz-ended', function (d) {
    quizModeActive = false;
    quizPhaseLocal = null;
    quizPlayerLocal = { cannotTrue: false, cannotFalse: false, eliminated: false, score: 0 };
    quizPeersLocked = {};
    lastQuizQuestionText = '';
    lastQuizScores = {};
    try { document.body.classList.remove('room-lobby--quiz-active'); } catch (e) { /* ignore */ }
    hideQuizOverlay();
    appendLobbySystemChat('— ' + (d && d.message ? d.message : 'จบเกมตอบคำถาม'));
    if (d && d.returnToLobbyB) {
      serverSuspectPhaseActive = true;
      updateSuspectFloatingOpenBtn();
    }
    redrawLobbyMap();
  });

  socket.on('detective-minigame-ended', function (data) {
    applyDetectiveReturnToLobbyB(data || {});
  });

  socket.on('lobby-interact', (data) => {
    if (!data || data.x == null || data.y == null) return;
    lobbyInteractPulse = { x: data.x, y: data.y, until: Date.now() + 700 };
    const name = (data.nickname || 'ผู้เล่น').trim();
    appendLobbySystemChat('★ ' + name + ' โต้ตอบกับจุดในห้อง');
    redrawLobbyMap();
  });

  socket.on('chat', (data) => {
    const el = document.getElementById('chat-messages');
    if (!el) return;
    const div = document.createElement('div');
    const isMe = data.id === socket.id;
    div.className = 'chat-msg ' + (isMe ? 'chat-msg-mine' : 'chat-msg-other');
    div.textContent = (data.nickname || '') + ': ' + (data.text || '');
    el.appendChild(div);
    el.scrollTop = 1e9;
  });

  const chatForm = document.getElementById('chat-form');
  const chatInput = document.getElementById('chat-input');
  if (chatForm && chatInput) {
    chatForm.addEventListener('submit', function (e) {
      e.preventDefault();
      var text = (chatInput.value || '').trim();
      if (text) { socket.emit('chat', text); chatInput.value = ''; }
    });
  }
  const chatCloseBtn = document.getElementById('chat-close-btn');
  const chatToggleImg = document.getElementById('chat-toggle-img');
  if (chatCloseBtn && chatToggleImg) {
    function updateChatToggleIcon() {
      const panel = document.querySelector('.room-lobby-chat-peers');
      const collapsed = panel && panel.classList.contains('chat-panel-collapsed');
      chatToggleImg.src = collapsed ? SERVER + '/img/btn-chat.png' : SERVER + '/img/chat-close-btn.png';
      chatCloseBtn.setAttribute('title', collapsed ? 'เปิดแชท' : 'ปิดแชท');
      chatCloseBtn.setAttribute('aria-label', collapsed ? 'เปิดแชท' : 'ปิดแชท');
    }
    chatCloseBtn.addEventListener('click', function () {
      const panel = document.querySelector('.room-lobby-chat-peers');
      if (panel) {
        panel.classList.toggle('chat-panel-collapsed');
        const collapsed = panel.classList.contains('chat-panel-collapsed');
        panel.setAttribute('aria-expanded', collapsed ? 'false' : 'true');
        updateChatToggleIcon();
      }
    });
    const peerPanelInit = document.querySelector('.room-lobby-chat-peers');
    if (peerPanelInit) {
      peerPanelInit.setAttribute('aria-expanded', peerPanelInit.classList.contains('chat-panel-collapsed') ? 'false' : 'true');
    }
    updateChatToggleIcon();
  }

  const aiChatCloseBtn = document.getElementById('ai-chat-close-btn');
  const aiChatPanel = document.getElementById('ai-chat-panel');
  const aiChatToggleImg = document.getElementById('ai-chat-toggle-img');
  if (aiChatCloseBtn && aiChatPanel) {
    function updateAiChatToggleIcon() {
      const collapsed = aiChatPanel.classList.contains('chat-panel-collapsed');
      if (aiChatToggleImg) aiChatToggleImg.src = collapsed ? MAIN_LOBBY_AI_BTN_ICON : SERVER + '/img/chat-close-btn.png';
      if (aiChatToggleImg) aiChatToggleImg.alt = collapsed ? 'เทพความรู้' : 'ปิด';
      aiChatCloseBtn.setAttribute('title', collapsed ? 'เปิดแชท AI' : 'ปิดแชท AI');
      aiChatCloseBtn.setAttribute('aria-label', aiChatCloseBtn.getAttribute('title'));
    }
    aiChatCloseBtn.addEventListener('click', function () {
      aiChatPanel.classList.toggle('chat-panel-collapsed');
      const collapsed = aiChatPanel.classList.contains('chat-panel-collapsed');
      aiChatPanel.setAttribute('aria-expanded', collapsed ? 'false' : 'true');
      updateAiChatToggleIcon();
    });
    aiChatPanel.setAttribute('aria-expanded', aiChatPanel.classList.contains('chat-panel-collapsed') ? 'false' : 'true');
    updateAiChatToggleIcon();
  }

  const aiChatForm = document.getElementById('ai-chat-form');
  const aiChatInput = document.getElementById('ai-chat-input');
  const aiChatSendBtn = aiChatForm ? aiChatForm.querySelector('button[type="submit"]') : null;
  var aiChatLoadingEl = null;

  function appendAiMessage(text, isAi) {
    var el = document.getElementById('ai-chat-messages');
    if (!el) return;
    if (isAi) removeAiChatLoading();
    var div = document.createElement('div');
    div.className = 'chat-msg ' + (isAi ? 'chat-msg-ai' : 'chat-msg-mine');
    div.textContent = (isAi ? 'AI: ' : '') + text;
    el.appendChild(div);
    el.scrollTop = 1e9;
  }

  function showAiChatLoading() {
    var el = document.getElementById('ai-chat-messages');
    if (!el || aiChatLoadingEl) return;
    aiChatLoadingEl = document.createElement('div');
    aiChatLoadingEl.className = 'chat-msg chat-msg-ai ai-chat-typing';
    aiChatLoadingEl.setAttribute('aria-label', 'กำลังพิมพ์');
    aiChatLoadingEl.innerHTML = '<span class="ai-typing-dot"></span><span class="ai-typing-dot"></span><span class="ai-typing-dot"></span>';
    el.appendChild(aiChatLoadingEl);
    el.scrollTop = 1e9;
  }

  function removeAiChatLoading() {
    if (aiChatLoadingEl && aiChatLoadingEl.parentNode) {
      aiChatLoadingEl.parentNode.removeChild(aiChatLoadingEl);
      aiChatLoadingEl = null;
    }
  }

  function setAiChatWaiting(waiting) {
    if (aiChatInput) aiChatInput.disabled = waiting;
    if (aiChatSendBtn) aiChatSendBtn.disabled = waiting;
    if (waiting) showAiChatLoading(); else removeAiChatLoading();
  }

  if (aiChatForm && aiChatInput) {
    aiChatForm.addEventListener('submit', function (e) {
      e.preventDefault();
      var text = (aiChatInput.value || '').trim();
      if (!text) return;
      appendAiMessage(text, false);
      setAiChatWaiting(true);
      aiChatInput.value = '';
      fetch(SERVER + '/api/ai-chat', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ message: text, sessionId: socket.id }),
      })
        .then(function (r) { return r.json(); })
        .then(function (data) {
          if (data.response != null) appendAiMessage(data.response, true);
          else if (data.error) appendAiMessage('[ข้อผิดพลาด: ' + data.error + ']', true);
        })
        .catch(function () { appendAiMessage('[ส่งไม่สำเร็จ]', true); })
        .finally(function () { setAiChatWaiting(false); });
    });
  }

  let localStream = null;
  let voiceActivityInterval = null;
  let voiceAnalyserContext = null;
  let voiceAnalyser = null;
  const peerConnections = {};
  const remoteAudios = {};
  let audioUnlocked = false;

  function startVoiceActivityDetection(stream) {
    if (!stream || !stream.getTracks().length) return;
    try {
      var ctx = new (window.AudioContext || window.webkitAudioContext)();
      if (ctx.state === 'suspended') ctx.resume().catch(function () {});
      var src = ctx.createMediaStreamSource(stream);
      var analyser = ctx.createAnalyser();
      analyser.fftSize = 256;
      analyser.smoothingTimeConstant = 0.5;
      src.connect(analyser);
      voiceAnalyserContext = ctx;
      voiceAnalyser = analyser;
      var dataArray = new Uint8Array(analyser.frequencyBinCount);
      var lastEmit = 0;
      voiceActivityInterval = setInterval(function () {
        if (!voiceAnalyser || !stream.active) return;
        voiceAnalyser.getByteFrequencyData(dataArray);
        var sum = 0;
        for (var i = 0; i < dataArray.length; i++) sum += dataArray[i];
        var avg = sum / dataArray.length;
        var level = Math.min(1, avg / 60);
        if (level > 0.08 && Date.now() - lastEmit > 80) {
          lastEmit = Date.now();
          socket.emit('voice-activity', { level: level });
          var me = peers.get(socket.id);
          if (me) {
            me.speakingUntil = Date.now() + 400;
            me.speakingLevel = level;
            redrawLobbyMap();
          }
        }
      }, 100);
    } catch (e) { console.warn('Voice activity detection:', e); }
  }
  function stopVoiceActivityDetection() {
    if (voiceActivityInterval) { clearInterval(voiceActivityInterval); voiceActivityInterval = null; }
    if (voiceAnalyserContext) { try { voiceAnalyserContext.close(); } catch (e) {} voiceAnalyserContext = null; }
    voiceAnalyser = null;
  }
  function unlockAudio() {
    if (audioUnlocked) return;
    try {
      var a = new Audio();
      a.volume = 0;
      a.play().then(function() { audioUnlocked = true; playAllRemoteAudios(); }).catch(function() {});
    } catch (e) {}
  }
  function playAllRemoteAudios() {
    Object.keys(remoteAudios).forEach(function(peerId) { tryPlayPeer(peerId); });
  }
  function tryPlayPeer(peerId) {
    var el = remoteAudios[peerId];
    if (el && el.srcObject) el.play().catch(function() {});
  }

  function addRemoteAudio(peerId, stream) {
    if (!stream || !stream.getTracks().length) return;
    unlockAudio();

    if (remoteAudios[peerId]) {
      remoteAudios[peerId].srcObject = stream;
      tryPlayPeer(peerId);
      return;
    }

    var el = document.createElement('audio');
    el.autoplay = true;
    el.setAttribute('playsinline', '');
    el.volume = 1;
    el.srcObject = stream;
    el.style.cssText = 'position:absolute;width:0;height:0;opacity:0;pointer-events:none;';
    remoteAudios[peerId] = el;
    (document.getElementById('chat-messages') || document.body).appendChild(el);

    el.onloadedmetadata = function() { tryPlayPeer(peerId); };
    el.oncanplay = function() { tryPlayPeer(peerId); };
    tryPlayPeer(peerId);
  }

  function setupUnlockOnFirstClick() {
    var once = function() {
      unlockAudio();
      document.body.removeEventListener('click', once);
    };
    document.body.addEventListener('click', once, { once: true });
  }

  socket.on('peer-voice-state', ({ id, micOn }) => {
    const p = peers.get(id);
    if (p) { p.voiceMicOn = micOn !== false; redrawLobbyMap(); }
  });

  socket.on('peer-speaking', function (data) {
    var id = data.id, level = data.level, until = data.until;
    var p = peers.get(id);
    if (p) {
      p.speakingUntil = until;
      p.speakingLevel = level;
      redrawLobbyMap();
    }
  });

  const iceQueue = {};
  const defaultIceServers = [{ urls: 'stun:stun.l.google.com:19302' }, { urls: 'stun:stun1.l.google.com:19302' }];
  let cachedIceServers = null;
  async function getIceServers() {
    if (cachedIceServers) return cachedIceServers;
    try {
      const r = await fetch(SERVER + '/api/ice-servers');
      const d = await r.json();
      if (d && d.iceServers && d.iceServers.length) cachedIceServers = d.iceServers;
      else cachedIceServers = defaultIceServers;
    } catch (e) { cachedIceServers = defaultIceServers; }
    return cachedIceServers;
  }
  async function createPeerConnection(peerId, fromOffer) {
    if (peerConnections[peerId]) return peerConnections[peerId];
    const iceServers = await getIceServers();
    const pc = new RTCPeerConnection({ iceServers: iceServers });
    pc._isInitiator = !fromOffer;
    if (localStream) localStream.getTracks().forEach(t => pc.addTrack(t, localStream));
    pc.ontrack = (e) => {
      if (e.track.kind !== 'audio') return;
      e.track.enabled = true;
      const stream = (e.streams && e.streams[0]) ? e.streams[0] : new MediaStream([e.track]);
      if (window.DEBUG_VOICE) console.log('[voice] ontrack จาก', peerId, 'streamId=', stream.id, 'track=', e.track.id);
      addRemoteAudio(peerId, stream);
    };
    pc.onicecandidate = (e) => { if (e.candidate) socket.emit('webrtc-signal', { to: peerId, type: 'ice', candidate: e.candidate }); };
    pc.oniceconnectionstatechange = () => {
      if (window.DEBUG_VOICE) console.log('[voice] ICE', peerId, pc.iceConnectionState);
      if (pc.iceConnectionState === 'connected' || pc.iceConnectionState === 'completed') tryPlayPeer(peerId);
    };
    pc.onnegotiationneeded = async () => {
      if (!pc._isInitiator) return;
      try {
        const offer = await pc.createOffer();
        await pc.setLocalDescription(offer);
        socket.emit('webrtc-signal', { to: peerId, type: 'offer', sdp: { type: offer.type, sdp: offer.sdp } });
      } catch (err) { console.warn('WebRTC offer error', err); }
    };
    peerConnections[peerId] = pc;
    iceQueue[peerId] = [];
    return pc;
  }
  async function drainIceQueue(peerId) {
    const pc = peerConnections[peerId];
    const q = iceQueue[peerId];
    if (!pc || !q || q.length === 0) return;
    while (q.length > 0) {
      const c = q.shift();
      try { await pc.addIceCandidate(new RTCIceCandidate(c)); } catch (e) { console.warn('addIceCandidate', e); }
    }
  }

  function closePeer(peerId) {
    const pc = peerConnections[peerId];
    if (pc) { pc.close(); delete peerConnections[peerId]; }
    var el = remoteAudios[peerId];
    if (el) {
      el.srcObject = null;
      el.remove();
      delete remoteAudios[peerId];
    }
  }

  socket.on('webrtc-signal', async (data) => {
    const { from, type, sdp, candidate } = data;
    if (!from || from === socket.id) return;
    try {
      const sdpObj = (sdp && (sdp.sdp !== undefined)) ? sdp : (sdp ? { type: sdp.type, sdp: sdp.sdp || '' } : null);
      if (type === 'offer' && sdpObj) {
        const pc = await createPeerConnection(from, true);
        await pc.setRemoteDescription(new RTCSessionDescription(sdpObj));
        const answer = await pc.createAnswer();
        await pc.setLocalDescription(answer);
        socket.emit('webrtc-signal', { to: from, type: 'answer', sdp: { type: answer.type, sdp: answer.sdp } });
        await drainIceQueue(from);
      } else if (type === 'answer' && sdpObj) {
        const pc = peerConnections[from];
        if (pc) {
          await pc.setRemoteDescription(new RTCSessionDescription(sdpObj));
          await drainIceQueue(from);
        }
      } else if (type === 'ice' && candidate) {
        const pc = peerConnections[from];
        if (pc) {
          if (pc.remoteDescription) {
            try { await pc.addIceCandidate(new RTCIceCandidate(candidate)); } catch (e) { (iceQueue[from] = iceQueue[from] || []).push(candidate); }
          } else (iceQueue[from] = iceQueue[from] || []).push(candidate);
        }
      }
    } catch (err) { console.warn('WebRTC signal error', err); }
  });

  socket.on('host-changed', (data) => {
    hostId = data.hostId || null;
    const isHost = hostId === socket.id;
    if (hostOnly) hostOnly.style.display = isHost ? 'flex' : 'none';
    if (nonHostMsg) nonHostMsg.style.display = isHost ? 'none' : 'inline';
    renderPeers();
    if (isHost && playMapSelect) {
      fetch(SERVER + '/api/maps')
        .then(r => r.json())
        .then(list => {
          playMapSelect.innerHTML = '<option value="">— เลือกฉากสำหรับเล่น —</option>';
          (list || []).forEach(m => {
            const opt = document.createElement('option');
            opt.value = m.id;
            opt.textContent = m.name || m.id;
            if (m.name) opt.dataset.mapName = m.name;
            playMapSelect.appendChild(opt);
          });
        })
        .catch(() => { playMapSelect.innerHTML = '<option value="">โหลดฉากไม่ได้</option>'; });
    }
    updateHostStartGameButton();
    ensureReadyControlEnabled();
    updateSuspectHostUi();
    updateSuspectFloatingOpenBtn();
    refreshHostConsoleOverlayIfOpen();
  });

  socket.off('user-left');
  socket.on('user-left', (data) => {
    closePeer(data.id);
    peers.delete(data.id);
    updatePlayersHud();
    renderPeers();
    ensureReadyControlEnabled();
    redrawLobbyMap();
    refreshHostConsoleOverlayIfOpen();
  });

  const btnVoice = document.getElementById('btn-voice');
  const voiceDeviceSelect = document.getElementById('voice-device-select');

  function setVoiceButtonIcon(btn, micOn) {
    if (!btn) return;
    const img = btn.querySelector('#btn-voice-icon-img') || btn.querySelector('img');
    if (img) {
      img.src = micOn ? SERVER + '/img/btn-mic-on.png' : SERVER + '/img/btn-mic-mute.png';
      img.alt = micOn ? 'ปิดเสียง' : 'เปิดเสียง';
    } else {
      btn.textContent = micOn ? '🔇 ปิดเสียง' : '🔊 เปิดเสียง';
    }
    btn.title = micOn ? 'ปิดเสียงพูด' : 'เปิดเสียงพูด';
  }

  async function populateVoiceDevices() {
    if (!voiceDeviceSelect) return;
    try {
      const devs = await navigator.mediaDevices.enumerateDevices();
      const inputs = devs.filter(d => d.kind === 'audioinput');
      voiceDeviceSelect.innerHTML = '';
      if (inputs.length === 0) {
        voiceDeviceSelect.innerHTML = '<option value="">ไม่มีไมค์</option>';
        return;
      }
      voiceDeviceSelect.appendChild(new Option('ไมค์เริ่มต้น (default)', ''));
      inputs.forEach(d => {
        voiceDeviceSelect.appendChild(new Option(d.label || 'ไมค์ ' + (voiceDeviceSelect.options.length), d.deviceId));
      });
    } catch (e) {
      voiceDeviceSelect.innerHTML = '<option value="">โหลดไม่สำเร็จ</option>';
    }
  }

  if (voiceDeviceSelect) {
    populateVoiceDevices();
    navigator.mediaDevices.addEventListener('devicechange', populateVoiceDevices);
  }

  let troublesomeEligibleSent = false;
  function tryTroublesomeLobbyGate() {
    if (!isPostCaseLobbyRoom()) return;
    const howtoEl = document.getElementById('room-howto-overlay');
    const micEl = document.getElementById('mic-permission-overlay');
    const howtoOk = !howtoEl || howtoEl.classList.contains('hidden') || howtoEl.classList.contains('is-hidden');
    const micOk = !micEl || micEl.classList.contains('hidden') || micEl.classList.contains('is-hidden');
    if (!howtoOk || !micOk) return;
    if (troublesomeEligibleSent) return;
    troublesomeEligibleSent = true;
    socket.emit('troublesome-eligible');
  }

  function hideMicPermissionOverlay() {
    var el = document.getElementById('mic-permission-overlay');
    if (el) el.classList.add('hidden');
    tryTroublesomeLobbyGate();
  }

  const roomHowtoOverlay = document.getElementById('room-howto-overlay');
  const roomHowtoBtnGotIt = document.getElementById('room-howto-btn-got-it');
  if (roomHowtoBtnGotIt) {
    roomHowtoBtnGotIt.addEventListener('click', function () {
      if (roomHowtoOverlay) {
        roomHowtoOverlay.classList.add('hidden');
        roomHowtoOverlay.classList.add('is-hidden');
      }
      tryTroublesomeLobbyGate();
    });
  }
  document.getElementById('btn-room-howto')?.addEventListener('click', function () {
    if (roomHowtoOverlay) {
      roomHowtoOverlay.classList.remove('hidden');
      roomHowtoOverlay.classList.remove('is-hidden');
    }
  });

  var micPermissionOverlay = document.getElementById('mic-permission-overlay');
  var micPermissionAllow = document.getElementById('mic-permission-allow');
  var micPermissionClose = document.getElementById('mic-permission-close');
  if (micPermissionAllow) {
    micPermissionAllow.addEventListener('click', async function () {
      unlockAudio();
      if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
        alert('เบราว์เซอร์นี้ไม่รองรับการขอสิทธิ์ไมค์');
        hideMicPermissionOverlay();
        return;
      }
      micPermissionAllow.disabled = true;
      micPermissionAllow.title = 'กำลังขอสิทธิ์...';
      try {
        var stream = await navigator.mediaDevices.getUserMedia({ audio: true });
        if (stream) stream.getTracks().forEach(function (t) { t.stop(); });
        if (typeof populateVoiceDevices === 'function') await populateVoiceDevices();
        hideMicPermissionOverlay();
        var permBtn = document.getElementById('btn-voice-permission');
        if (permBtn) { permBtn.textContent = '✓ อนุญาตแล้ว'; permBtn.disabled = true; }
      } catch (err) {
        micPermissionAllow.disabled = false;
        micPermissionAllow.title = 'อนุญาต';
        alert('ไมค์ถูกปฏิเสธหรือไม่พบอุปกรณ์: ' + (err.message || err));
      }
    });
  }
  if (micPermissionClose) {
    micPermissionClose.addEventListener('click', function () {
      hideMicPermissionOverlay();
    });
  }

  const btnVoicePermission = document.getElementById('btn-voice-permission');
  if (btnVoicePermission) {
    btnVoicePermission.addEventListener('click', async () => {
      unlockAudio();
      if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
        alert('เบราว์เซอร์นี้ไม่รองรับการขอสิทธิ์ไมค์');
        return;
      }
      btnVoicePermission.disabled = true;
      btnVoicePermission.textContent = 'กำลังขอสิทธิ์...';
      let stream = null;
      try {
        stream = await navigator.mediaDevices.getUserMedia({ audio: true });
        if (stream) stream.getTracks().forEach(t => t.stop());
        await populateVoiceDevices();
        btnVoicePermission.textContent = '✓ อนุญาตแล้ว';
        hideMicPermissionOverlay();
      } catch (err) {
        btnVoicePermission.disabled = false;
        btnVoicePermission.textContent = '🎤 ขอสิทธิ์ไมค์';
        alert('ไมค์ถูกปฏิเสธหรือไม่พบอุปกรณ์: ' + (err.message || err));
      }
    });
  }

  var btnHear = document.getElementById('btn-hear');
  if (btnHear) {
    btnHear.addEventListener('click', function() {
      unlockAudio();
      playAllRemoteAudios();
      btnHear.textContent = '✓ เปิดรับเสียงแล้ว';
      btnHear.disabled = true;
    });
  }
  setupUnlockOnFirstClick();

  if (btnVoice) {
    btnVoice.addEventListener('click', async () => {
      unlockAudio();
      if (localStream) {
        stopVoiceActivityDetection();
        Object.keys(peerConnections).forEach(peerId => {
          const pc = peerConnections[peerId];
          if (pc && pc.getSenders) {
            pc.getSenders().forEach(sender => { try { pc.removeTrack(sender); } catch (e) {} });
          }
        });
        localStream.getTracks().forEach(t => t.stop());
        localStream = null;
        socket.emit('voice-state', { micOn: false });
        const me = peers.get(socket.id);
        if (me) me.voiceMicOn = false;
        setVoiceButtonIcon(btnVoice, false);
        return;
      }
      const deviceId = voiceDeviceSelect && voiceDeviceSelect.value ? voiceDeviceSelect.value.trim() : '';
      const audioConstraints = {
        audio: deviceId
          ? { deviceId: { ideal: deviceId }, echoCancellation: true, noiseSuppression: true, autoGainControl: true }
          : { echoCancellation: true, noiseSuppression: true, autoGainControl: true }
      };
      try {
        localStream = await navigator.mediaDevices.getUserMedia(audioConstraints);
        startVoiceActivityDetection(localStream);
        await populateVoiceDevices();
        setVoiceButtonIcon(btnVoice, true);
        socket.emit('voice-state', { micOn: true });
        const me = peers.get(socket.id);
        if (me) me.voiceMicOn = true;
        for (const peerId of peers.keys()) {
          if (peerId === socket.id) continue;
          const pc = await createPeerConnection(peerId);
          if (!localStream || !pc) continue;
          const senders = pc.getSenders();
          let added = false;
          localStream.getTracks().forEach(track => {
            const hasTrack = senders.find(s => s.track === track);
            if (!hasTrack) { pc.addTrack(track, localStream); added = true; }
          });
          if (added) {
            try {
              const offer = await pc.createOffer();
              await pc.setLocalDescription(offer);
              socket.emit('webrtc-signal', { to: peerId, type: 'offer', sdp: { type: offer.type, sdp: offer.sdp } });
            } catch (e) { console.warn('WebRTC renegotiate offer error', e); }
          }
        }
      } catch (err) {
        alert('ไม่สามารถเปิดไมค์ได้: ' + (err.message || err));
      }
    });
  }

  function getLobbyEvidenceCasePayload() {
    try {
      const meta = window.__detectiveLobbyMeta;
      let cid = meta && meta.caseId != null ? String(meta.caseId).trim() : '1';
      if (!/^[123]$/.test(cid)) cid = '1';
      return LOBBY_EVIDENCE_CASES[cid] || LOBBY_EVIDENCE_CASES['1'];
    } catch (e) {
      return LOBBY_EVIDENCE_CASES['1'];
    }
  }

  function setLobbyEvidenceTabImage(idx) {
    const img = document.getElementById('lobby-evidence-tabs-img');
    if (!img) return;
    const n = Math.max(0, Math.min(2, idx)) + 1;
    img.src = `${LOBBY_EVIDENCE_ASSET_BASE}/evidence-tab-${n}.png`;
  }

  function renderLobbyEvidenceCards(suspectIdx) {
    const root = document.getElementById('lobby-evidence-cards-root');
    if (!root) return;
    const payload = getLobbyEvidenceCasePayload();
    const suspects = payload.suspects || [];
    const si = Math.max(0, Math.min(suspects.length - 1, suspectIdx));
    const s = suspects[si];
    root.textContent = '';
    if (!s || !s.cards) return;
    s.cards.forEach((c) => {
      let rar = String(c.rarity || 'common').toLowerCase();
      if (!LOBBY_EVIDENCE_RARITY[rar]) rar = 'common';
      const nStar = Math.max(1, Math.min(3, Number(c.stars) || 1));
      let stars = '';
      for (let st = 0; st < nStar; st++) stars += '★';

      const card = document.createElement('article');
      card.className = `lobby-evidence-card lobby-evidence-card--${rar}`;

      const head = document.createElement('div');
      head.className = 'lobby-evidence-card-head';
      const icon = document.createElement('span');
      icon.className = 'lobby-evidence-card-icon';
      icon.textContent = '🔎';
      icon.setAttribute('aria-hidden', 'true');
      const titles = document.createElement('div');
      titles.className = 'lobby-evidence-card-titles';
      const hTh = document.createElement('p');
      hTh.className = 'lobby-evidence-card-title-th';
      hTh.textContent = c.titleTh || '';
      const hEn = document.createElement('p');
      hEn.className = 'lobby-evidence-card-title-en';
      hEn.textContent = c.titleEn ? `(${c.titleEn})` : '';
      titles.appendChild(hTh);
      titles.appendChild(hEn);
      head.appendChild(icon);
      head.appendChild(titles);

      const art = document.createElement('div');
      art.className = 'lobby-evidence-card-art';
      art.setAttribute('aria-hidden', 'true');
      art.textContent = '◆';

      const body = document.createElement('p');
      body.className = 'lobby-evidence-card-body';
      body.textContent = c.body || '';

      const foot = document.createElement('div');
      foot.className = 'lobby-evidence-card-foot';
      const link = document.createElement('div');
      link.className = 'lobby-evidence-link';
      const av = document.createElement('span');
      av.className = 'lobby-evidence-avatar';
      const nm = s.linkName || '?';
      av.textContent = nm.charAt(0);
      const nmEl = document.createElement('span');
      nmEl.className = 'lobby-evidence-link-name';
      nmEl.textContent = nm;
      link.appendChild(av);
      link.appendChild(nmEl);
      const fm = document.createElement('div');
      fm.className = 'lobby-evidence-foot-meta';
      const rl = document.createElement('span');
      rl.className = 'lobby-evidence-rarity';
      rl.textContent = `(${LOBBY_EVIDENCE_RARITY[rar]})`;
      const stEl = document.createElement('div');
      stEl.className = 'lobby-evidence-stars';
      stEl.textContent = stars;
      fm.appendChild(rl);
      fm.appendChild(stEl);
      foot.appendChild(link);
      foot.appendChild(fm);

      card.appendChild(head);
      card.appendChild(art);
      card.appendChild(body);
      card.appendChild(foot);
      root.appendChild(card);
    });
  }

  let lobbyEvidenceSuspectIdx = 0;
  function syncLobbyEvidenceTabUi(idx) {
    lobbyEvidenceSuspectIdx = Math.max(0, Math.min(2, idx));
    setLobbyEvidenceTabImage(lobbyEvidenceSuspectIdx);
    document.querySelectorAll('[data-evidence-tab]').forEach((b) => {
      const i = parseInt(b.getAttribute('data-evidence-tab'), 10);
      b.setAttribute('aria-selected', i === lobbyEvidenceSuspectIdx ? 'true' : 'false');
    });
    renderLobbyEvidenceCards(lobbyEvidenceSuspectIdx);
  }

  function openLobbyEvidenceModal() {
    const ov = document.getElementById('lobby-evidence-overlay');
    if (!ov) return;
    ov.classList.remove('is-hidden');
    ov.setAttribute('aria-hidden', 'false');
    syncLobbyEvidenceTabUi(0);
    document.getElementById('lobby-evidence-close')?.focus();
  }

  function closeLobbyEvidenceModal() {
    const ov = document.getElementById('lobby-evidence-overlay');
    if (!ov) return;
    ov.classList.add('is-hidden');
    ov.setAttribute('aria-hidden', 'true');
  }

  document.getElementById('lobby-b-btn-evidence')?.addEventListener('click', () => {
    if (!isPostCaseLobbyRoom()) return;
    openLobbyEvidenceModal();
  });

  document.getElementById('lobby-evidence-backdrop')?.addEventListener('click', () => {
    closeLobbyEvidenceModal();
  });
  document.getElementById('lobby-evidence-close')?.addEventListener('click', () => {
    closeLobbyEvidenceModal();
  });
  document.getElementById('lobby-evidence-overlay')?.addEventListener('click', (e) => {
    const hit = e.target.closest('[data-evidence-tab]');
    if (!hit) return;
    const i = parseInt(hit.getAttribute('data-evidence-tab'), 10);
    if (!Number.isNaN(i)) syncLobbyEvidenceTabUi(i);
  });
  const LOBBY_RANK_MEDAL_BASE = typeof appPath === 'function' ? appPath('/Main-Lobby/IMAGE') : '/Main-Lobby/IMAGE';
  const LOBBY_RANK_MOCK_LEADERS = [
    { name: 'Golden L.', score: 9951 },
    { name: 'Mixie Kim', score: 9878 },
    { name: 'Leena', score: 9800 },
    { name: 'JeeJee256', score: 9785 },
    { name: 'Peach M.', score: 9762 },
    { name: 'Pony', score: 9720 },
    { name: 'Jubjib S.', score: 9688 },
    { name: 'Miss Berlin', score: 9620 },
    { name: 'Lemon Honey', score: 9560 },
    { name: 'Rosae BP.', score: 9500 },
  ];

  function getLobbyRankCaseTitle() {
    try {
      const meta = window.__detectiveLobbyMeta;
      const cid = meta && meta.caseId != null ? String(meta.caseId).trim() : '';
      if (cid === '2') return 'คดีปล้นร้านอัญมณี';
      if (cid === '3') return 'คดีฆาตกรรมปริศนา';
      return 'คดีโจรกรรมไซเบอร์';
    } catch (e) {
      return 'คดีโจรกรรมไซเบอร์';
    }
  }

  function buildRankPedestal(rank, entry, medalFile, pedClass) {
    const wrap = document.createElement('div');
    wrap.className = `lobby-rank-ped ${pedClass}`;
    if (rank === 1) {
      const crown = document.createElement('div');
      crown.className = 'lobby-rank-crown';
      crown.innerHTML = '<span class="lobby-rank-crown-ico" aria-hidden="true">👑</span><span class="lobby-rank-crown-n">1</span>';
      wrap.appendChild(crown);
    }
    const medWrap = document.createElement('div');
    medWrap.className = 'lobby-rank-medal-wrap';
    const img = document.createElement('img');
    img.className = 'lobby-rank-medal-img';
    img.src = `${LOBBY_RANK_MEDAL_BASE}/${medalFile}`;
    img.alt = `เหรียญอันดับ ${rank}`;
    medWrap.appendChild(img);
    wrap.appendChild(medWrap);
    const av = document.createElement('div');
    av.className = 'lobby-rank-ped-avatar';
    av.textContent = (entry.name || '?').charAt(0);
    wrap.appendChild(av);
    const nm = document.createElement('div');
    nm.className = 'lobby-rank-ped-name';
    nm.textContent = entry.name || '';
    wrap.appendChild(nm);
    const sc = document.createElement('div');
    sc.className = 'lobby-rank-ped-score';
    sc.textContent = String(entry.score);
    wrap.appendChild(sc);
    return wrap;
  }

  function renderLobbyRankModalContent() {
    const titleEl = document.getElementById('lobby-rank-case-title');
    if (titleEl) titleEl.textContent = getLobbyRankCaseTitle();
    const sorted = [...LOBBY_RANK_MOCK_LEADERS].sort((a, b) => b.score - a.score);
    const podium = document.getElementById('lobby-rank-podium');
    const tbody = document.getElementById('lobby-rank-tbody');
    const selfFoot = document.getElementById('lobby-rank-self');
    if (!podium || !tbody || !selfFoot) return;
    podium.textContent = '';
    const first = sorted[0];
    const second = sorted[1];
    const third = sorted[2];
    if (second) podium.appendChild(buildRankPedestal(2, second, 'leaderboard-2.png', 'lobby-rank-ped--2'));
    if (first) podium.appendChild(buildRankPedestal(1, first, 'leaderboard-1.png', 'lobby-rank-ped--1'));
    if (third) podium.appendChild(buildRankPedestal(3, third, 'leaderboard-3.png', 'lobby-rank-ped--3'));
    tbody.textContent = '';
    for (let i = 3; i < sorted.length && i < 10; i++) {
      const row = sorted[i];
      const tr = document.createElement('tr');
      const tdR = document.createElement('td');
      tdR.textContent = String(i + 1);
      const tdN = document.createElement('td');
      const wrap = document.createElement('div');
      wrap.className = 'lobby-rank-row-av';
      const mav = document.createElement('span');
      mav.className = 'lobby-rank-mini-av';
      mav.textContent = (row.name || '?').charAt(0);
      const sp = document.createElement('span');
      sp.className = 'lobby-rank-row-name';
      sp.textContent = row.name || '';
      sp.title = row.name || '';
      wrap.appendChild(mav);
      wrap.appendChild(sp);
      tdN.appendChild(wrap);
      const tdS = document.createElement('td');
      tdS.textContent = String(row.score);
      tr.appendChild(tdR);
      tr.appendChild(tdN);
      tr.appendChild(tdS);
      tbody.appendChild(tr);
    }
    selfFoot.textContent = '';
    const selfRank = document.createElement('span');
    selfRank.className = 'lobby-rank-self-rank';
    selfRank.textContent = '28';
    const selfAv = document.createElement('div');
    selfAv.className = 'lobby-rank-self-av';
    selfAv.textContent = (nick || '?').charAt(0);
    const meta = document.createElement('div');
    meta.className = 'lobby-rank-self-meta';
    const selfName = document.createElement('div');
    selfName.className = 'lobby-rank-self-name';
    selfName.textContent = nick || 'ผู้เล่น';
    meta.appendChild(selfName);
    const selfScore = document.createElement('div');
    selfScore.className = 'lobby-rank-self-score';
    selfScore.textContent = '7250';
    selfFoot.appendChild(selfRank);
    selfFoot.appendChild(selfAv);
    selfFoot.appendChild(meta);
    selfFoot.appendChild(selfScore);
  }

  function openLobbyRankModal() {
    const ov = document.getElementById('lobby-rank-overlay');
    if (!ov) return;
    renderLobbyRankModalContent();
    ov.classList.remove('is-hidden');
    ov.setAttribute('aria-hidden', 'false');
    document.getElementById('lobby-rank-close')?.focus();
  }

  function closeLobbyRankModal() {
    const ov = document.getElementById('lobby-rank-overlay');
    if (!ov) return;
    ov.classList.add('is-hidden');
    ov.setAttribute('aria-hidden', 'true');
  }

  document.getElementById('lobby-b-btn-rank')?.addEventListener('click', () => {
    if (!isPostCaseLobbyRoom()) return;
    openLobbyRankModal();
  });
  document.getElementById('btn-profile-set')?.addEventListener('click', () => {
    roomLobbyProfileOverlay.open();
  });
  document.getElementById('btn-setting-host')?.addEventListener('click', () => {
    openHostConsoleIfHost();
  });
  document.getElementById('btn-customize')?.addEventListener('click', () => {
    openRoomCustomize();
  });
  document.getElementById('room-lobby-profile-logout')?.addEventListener('click', () => {
    window.location.href = CREATE_ROOM_URL;
  });
  document.getElementById('lobby-rank-backdrop')?.addEventListener('click', () => {
    closeLobbyRankModal();
  });
  document.getElementById('lobby-rank-close')?.addEventListener('click', () => {
    closeLobbyRankModal();
  });

  socket.off('user-joined');
  socket.on('user-joined', async (data) => {
    peers.set(data.id, normalizeLobbyPeerFromServer(data, mapData));
    updatePlayersHud();
    renderPeers();
    ensureReadyControlEnabled();
    redrawLobbyMap();
    refreshHostConsoleOverlayIfOpen();
    if (localStream && data.id !== socket.id) await createPeerConnection(data.id);
  });

  let troublesomeTickTimer = null;
  const troublesomeTimerPausedForTuning = false;
  function closeTroublesomeOverlay() {
    const ov = document.getElementById('troublesome-overlay');
    if (ov) ov.classList.add('is-hidden');
    if (troublesomeTickTimer) {
      clearInterval(troublesomeTickTimer);
      troublesomeTickTimer = null;
    }
  }

  function refreshSuspectCaseLabel() {
    const el = document.getElementById('suspect-case-label');
    if (!el) return;
    let meta = null;
    try { meta = window.__detectiveLobbyMeta; } catch (e) { meta = null; }
    const cid = meta && meta.caseId != null ? String(meta.caseId).trim() : '';
    if (cid === '2') el.textContent = 'คดีปล้นร้านอัญมณี';
    else if (cid === '3') el.textContent = 'คดีฆาตกรรมปริศนา';
    else el.textContent = 'คดีโจรกรรมไซเบอร์';
  }

  function setSuspectCardMinigames(cards) {
    if (!cards || !cards.length) return;
    suspectCardMinigames = cards;
  }

  var SUSPECT_EVID_FULL = '/Main-Lobby/IMAGE/Choose%20a%20suspect/symbol-card.png';     // เก็บหลักฐานแล้ว (ติกถูก)
  var SUSPECT_EVID_EMPTY = '/Main-Lobby/IMAGE/Choose%20a%20suspect/symbol-card-bg.png';  // ช่องว่าง (?)

  /** อัปเดต suspectProgress จากเซิร์ฟ แล้ววาดติกถูกใหม่ */
  function setSuspectProgress(arr) {
    if (!Array.isArray(arr)) return;
    suspectProgress = [0, 1, 2].map(function (i) {
      var v = Math.floor(Number(arr[i]));
      return (Number.isFinite(v) && v > 0) ? Math.min(3, v) : 0;
    });
    applySuspectProgressVisual();
    if (suspectPickOverlayOpen) updateSuspectHostUi(); // อัปเดตปุ่มชี้ตัว (โชว์เมื่อสืบครบ)
  }

  /** วางติกถูกในช่อง "หลักฐาน" (.suspect-symbol-list) ตามจำนวนที่เก็บได้ */
  function applySuspectProgressVisual() {
    for (var i = 0; i <= 2; i++) {
      var card = document.querySelector('.suspect-card[data-index="' + i + '"]');
      if (!card) continue;
      var slots = card.querySelectorAll('.suspect-symbol-list img');
      var done = Math.max(0, Math.min(3, (suspectProgress && suspectProgress[i]) || 0));
      for (var s = 0; s < slots.length; s++) {
        var want = (s < done) ? SUSPECT_EVID_FULL : SUSPECT_EVID_EMPTY;
        if (slots[s].getAttribute('src') !== want) slots[s].src = want;
      }
    }
  }

  /* ===== ขั้นพิจารณาคดี — โหวตชี้ตัวคนร้าย (ใช้ overlay เดิม) ===== */
  function injectTrialStyle() {
    if (document.getElementById('trial-style')) return;
    var st = document.createElement('style');
    st.id = 'trial-style';
    var RV = '/Main-Lobby/IMAGE/RoomVote/';
    st.textContent =
      '.suspect-pick--trial{background:linear-gradient(rgba(4,8,18,.35),rgba(4,8,18,.55)),url(' + RV + 'roomvote-bg.png) center/cover no-repeat,#04081a !important}' +
      '.suspect-pick--trial .suspect-pick-actions{display:none!important}' +
      '.suspect-pick--trial #suspect-btn-accuse{display:none!important}' +   /* #1 ปุ่มชี้ตัวต้องหายตอนหน้าโหวต */
      '#trial-vote-counter{position:absolute;right:22px;top:14px;color:#7fe9ff;font:800 24px/1 Kanit,system-ui,sans-serif;display:none;z-index:62;text-shadow:0 0 12px rgba(34,211,238,.7)}' +
      '#trial-vote-counter b{color:#fff}' +
      '.suspect-pick--trial #trial-vote-counter{display:block}' +
      '.suspect-pick--trial .suspect-pick-title-img{display:none!important}' +
      '#trial-title{display:none;text-align:center;margin:0 0 4px}' +
      '#trial-title img{display:block;margin:0 auto;max-width:90vw}' +
      '#trial-title-main{height:92px;width:auto}' +
      '#trial-title-sub{height:46px;width:auto;margin-top:6px}' +
      '.suspect-pick--trial #trial-title{display:block}' +
      '.suspect-pick--trial .suspect-card{cursor:pointer;position:relative}' +
      // ตอนโหวต: ใบที่เราเลือก = ปุ่มภาพ "เลือกแล้ว" (btn-selected.png)
      '.suspect-card .trial-vote-badge{position:absolute;left:50%;bottom:10px;transform:translateX(-50%);display:none;z-index:7;white-space:nowrap}' +
      '.suspect-pick--trial .suspect-card--myvote .trial-vote-badge{display:block;width:204px;height:83px;max-width:80%;background:url(' + RV + 'btn-selected.png) center/contain no-repeat;color:transparent;font-size:0;padding:0;box-shadow:none}' +
      // ตอนเปิดเผยผล: โชว์คะแนนโหวตทุกใบ (ป้ายฟ้า)
      '.suspect-pick--trial.trial-revealed .trial-vote-badge{display:block;background:rgba(34,211,238,.97);color:#06121f;font:700 15px/1 Kanit;padding:7px 16px;border-radius:999px;box-shadow:0 2px 10px rgba(0,0,0,.45)}' +
      '.suspect-card--myvote{outline:3px solid #22c55e;outline-offset:-3px;border-radius:16px}' +
      '.suspect-card--culprit{outline:4px solid #f7768e;outline-offset:-4px;border-radius:16px;box-shadow:0 0 34px rgba(247,118,142,.85)}' +
      // แสตมป์ "ผู้บริสุทธิ์" ทับใบที่โหวตผิด + เทาใบนั้น
      '.suspect-card .trial-stamp{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%) rotate(-8deg);width:78%;max-width:300px;height:auto;z-index:9;display:none;pointer-events:none}' +
      '.suspect-card--innocent .trial-stamp{display:block}' +
      '.suspect-card--innocent{filter:grayscale(1) brightness(.8)}' +
      '#trial-lose-txt{position:absolute;left:50%;top:4%;transform:translateX(-50%);width:712px;max-width:88vw;height:auto;z-index:61;display:none}' +
      '#trial-result-banner{position:absolute;left:50%;top:5%;transform:translateX(-50%);background:rgba(6,12,24,.96);border:2px solid #22d3ee;border-radius:16px;padding:14px 26px;color:#e7ecff;font:600 20px/1.5 Kanit,system-ui,sans-serif;text-align:center;z-index:60;max-width:82%;box-shadow:0 8px 40px rgba(0,0,0,.6)}' +
      '#trial-reveal-btn{position:absolute;left:50%;bottom:5%;transform:translateX(-50%);background:linear-gradient(180deg,#22d3ee,#0e7490);color:#06121f;border:none;border-radius:14px;padding:14px 30px;font:700 20px/1 Kanit,system-ui,sans-serif;cursor:pointer;z-index:60;box-shadow:0 6px 22px rgba(34,211,238,.5)}';
    document.head.appendChild(st);
  }

  function ensureTrialBadges() {
    for (var i = 0; i <= 2; i++) {
      var card = document.querySelector('.suspect-card[data-index="' + i + '"]');
      if (!card) continue;
      if (!card.querySelector('.trial-vote-badge')) {
        var b = document.createElement('span');
        b.className = 'trial-vote-badge';
        b.textContent = '';
        card.appendChild(b);
      }
    }
  }

  function applyTrialBadges() {
    for (var i = 0; i <= 2; i++) {
      var card = document.querySelector('.suspect-card[data-index="' + i + '"]');
      if (!card) continue;
      var b = card.querySelector('.trial-vote-badge');
      if (b) b.textContent = 'โหวต ' + ((trialVoteCounts && trialVoteCounts[i]) || 0);
    }
  }

  function ensureTrialBanner() {
    var ov = document.getElementById('suspect-pick-overlay');
    var el = document.getElementById('trial-result-banner');
    if (!el && ov) {
      el = document.createElement('div');
      el.id = 'trial-result-banner';
      el.style.display = 'none';
      ov.appendChild(el);
    }
    return el;
  }

  function ensureTrialCounter() {
    var ov = document.getElementById('suspect-pick-overlay');
    var el = document.getElementById('trial-vote-counter');
    if (!el && ov) {
      el = document.createElement('div');
      el.id = 'trial-vote-counter';
      ov.appendChild(el);
    }
    return el;
  }

  function setTrialCounter(voted, total) {
    var el = ensureTrialCounter();
    if (el) el.innerHTML = 'ลงติกแล้ว : <b>' + (voted || 0) + '/' + (total || 0) + '</b>';
  }

  function ensureTrialRevealBtn() {
    var ov = document.getElementById('suspect-pick-overlay');
    var btn = document.getElementById('trial-reveal-btn');
    if (!btn && ov) {
      btn = document.createElement('button');
      btn.id = 'trial-reveal-btn';
      btn.type = 'button';
      btn.textContent = 'เปิดเผยผล';
      btn.addEventListener('click', function () {
        socket.emit('trial-reveal', {}, function (res) {
          if (!(res && res.ok)) appendLobbySystemChat('— เปิดเผยผลไม่สำเร็จ' + (res && res.error ? (' · ' + res.error) : ''));
        });
      });
      ov.appendChild(btn);
    }
    if (btn) btn.style.display = (trialMode === 'voting' && hostId === socket.id) ? 'block' : 'none';
  }

  /** หัวข้อ "พิจารณาคดี" (แทนรูป title เลือกผู้ต้องสงสัยตอนอยู่โหมดโหวต) */
  function ensureTrialTitle() {
    var RV = '/Main-Lobby/IMAGE/RoomVote/';
    var row = document.getElementById('suspect-cards-row');
    var t = document.getElementById('trial-title');
    if (!t && row && row.parentNode) {
      t = document.createElement('div');
      t.id = 'trial-title';
      t.innerHTML = '<img id="trial-title-main" src="' + RV + 'roomvote-txt.png" alt="พิจารณาคดี">' +
        '<img id="trial-title-sub" src="' + RV + 'roomvote-txt-2.png" alt="เลือกผู้ร้ายตัวจริง">';
      row.parentNode.insertBefore(t, row);
    }
    return t;
  }

  // mode: 'vote' = roomvote-txt-2, 'result' = roomvote-txt-3
  function setTrialSubtitle(mode) {
    var RV = '/Main-Lobby/IMAGE/RoomVote/';
    var sub = document.getElementById('trial-title-sub');
    if (sub) sub.src = (mode === 'result') ? (RV + 'roomvote-txt-3.png') : (RV + 'roomvote-txt-2.png');
  }

  function castTrialVote(idx) {
    if (trialMode !== 'voting') return;
    myTrialVote = idx;
    document.querySelectorAll('.suspect-card').forEach(function (c) {
      var sel = parseInt(c.getAttribute('data-index'), 10) === idx;
      c.classList.toggle('suspect-card--myvote', sel);
      var b = c.querySelector('.trial-vote-badge');
      if (b && sel) b.textContent = '✓ เลือกแล้ว';
    });
    socket.emit('trial-vote', { index: idx }, function (res) {
      if (!(res && res.ok)) appendLobbySystemChat('— โหวตไม่สำเร็จ' + (res && res.error ? (' · ' + res.error) : ''));
    });
  }

  function openTrialVoteUI(data) {
    trialMode = 'voting';
    myTrialVote = null;
    trialVoteCounts = [0, 0, 0];
    if (data && data.cardMinigames) setSuspectCardMinigames(data.cardMinigames);
    if (data && Array.isArray(data.suspectProgress)) suspectProgress = [0, 1, 2].map(function (i) { return Math.min(3, Math.max(0, Math.floor(Number(data.suspectProgress[i])) || 0)); });
    injectTrialStyle();
    var ov = document.getElementById('suspect-pick-overlay');
    if (!ov) return;
    bindSuspectPickScaleListeners();
    suspectPickOverlayOpen = true;
    serverSuspectPhaseActive = false;
    ov.classList.remove('is-hidden', 'trial-revealed');
    ov.classList.add('suspect-pick--trial');
    ov.setAttribute('aria-hidden', 'false');
    document.querySelectorAll('.suspect-card').forEach(function (c) {
      c.classList.remove('suspect-card--myvote', 'suspect-card--culprit', 'suspect-card--selected', 'suspect-card--innocent');
    });
    var loseEl = document.getElementById('trial-lose-txt'); if (loseEl) loseEl.style.display = 'none';
    applySuspectProgressVisual();
    ensureTrialTitle();
    var ttl = document.getElementById('trial-title'); if (ttl) ttl.style.display = 'block';
    setTrialSubtitle('vote');
    ensureTrialBadges();
    document.querySelectorAll('.trial-vote-badge').forEach(function (b) { b.textContent = ''; });
    setTrialCounter(0, (data && data.totalPlayers) || (peers ? peers.size : 0) || 1);
    // กันปุ่มชี้ตัวค้าง: ใส่ is-hidden ตอนเข้าหน้าโหวต
    var accuseBtn0 = document.getElementById('suspect-btn-accuse');
    if (accuseBtn0) accuseBtn0.classList.add('is-hidden');
    ensureTrialRevealBtn();
    var banner = ensureTrialBanner();
    if (banner) banner.style.display = 'none';
    var actions = document.getElementById('suspect-pick-actions');
    if (actions) actions.classList.remove('suspect-pick-actions--visible');
    var hint = document.getElementById('suspect-pick-hint');
    if (hint) { hint.classList.remove('is-hidden'); hint.textContent = 'คลิกการ์ดที่คิดว่าเป็นคนร้าย'; }
    updateSuspectFloatingOpenBtn();
    scheduleSuspectPickScale();
  }

  function ensureTrialLoseTxt() {
    var ov = document.getElementById('suspect-pick-overlay');
    var el = document.getElementById('trial-lose-txt');
    if (!el && ov) {
      el = document.createElement('img');
      el.id = 'trial-lose-txt';
      el.src = '/Main-Lobby/IMAGE/RoomVote/txt-lose.png';
      el.alt = 'ไม่นะ..คุณจับแพะ!!';
      ov.appendChild(el);
    }
    return el;
  }

  function showTrialResult(data) {
    trialMode = 'revealed';
    var culprit = (data && typeof data.culpritIndex === 'number') ? data.culpritIndex : 0;
    if (data && Array.isArray(data.counts)) trialVoteCounts = data.counts;
    var counts = trialVoteCounts || [0, 0, 0];
    var ov = document.getElementById('suspect-pick-overlay');
    if (ov) ov.classList.add('trial-revealed');
    setTrialSubtitle('result');
    // หาผู้ต้องสงสัยที่ถูกโหวตมากสุด
    var mostVoted = 0; for (var k = 1; k <= 2; k++) { if ((counts[k] || 0) > (counts[mostVoted] || 0)) mostVoted = k; }
    var anyVotes = ((counts[0] || 0) + (counts[1] || 0) + (counts[2] || 0)) > 0;
    var correct = anyVotes && (mostVoted === culprit);
    document.querySelectorAll('.suspect-card').forEach(function (c) {
      var ci = parseInt(c.getAttribute('data-index'), 10);
      c.classList.remove('suspect-card--myvote', 'suspect-card--innocent');
      c.classList.toggle('suspect-card--culprit', ci === culprit);
      var b = c.querySelector('.trial-vote-badge');
      if (b) b.textContent = 'โหวต ' + (counts[ci] || 0);
      var stamp = c.querySelector('.trial-stamp');
      if (!stamp) { stamp = document.createElement('img'); stamp.className = 'trial-stamp'; stamp.src = '/Main-Lobby/IMAGE/RoomVote/stamp-innocent.png'; stamp.alt = 'ผู้บริสุทธิ์'; c.appendChild(stamp); }
      // โหวตผิด: ตีตรา "ผู้บริสุทธิ์" บนใบที่ถูกโหวตมากสุด (ไม่ใช่คนร้าย)
      if (!correct && anyVotes && ci === mostVoted && ci !== culprit) c.classList.add('suspect-card--innocent');
    });
    // โหวตผิด → โชว์ "ไม่นะ..คุณจับแพะ!!" + ซ่อนหัวข้อปกติ
    var lose = ensureTrialLoseTxt();
    var titleEl = document.getElementById('trial-title');
    if (!correct && anyVotes) {
      if (lose) lose.style.display = 'block';
      if (titleEl) titleEl.style.display = 'none';
    } else {
      if (lose) lose.style.display = 'none';
      if (titleEl) titleEl.style.display = 'block';
    }
    var names = (data && data.winnerNames && data.winnerNames.length) ? data.winnerNames.join(', ') : 'ไม่มีใครตอบถูก';
    var iWon = !!(data && Array.isArray(data.winners) && data.winners.indexOf(socket.id) >= 0);
    var banner = ensureTrialBanner();
    if (banner) {
      banner.style.top = (!correct && anyVotes) ? '17%' : '5%';
      banner.innerHTML = 'คนร้ายตัวจริงคือ <b>ผู้ต้องสงสัยหมายเลข ' + (culprit + 1) + '</b><br>' +
        'ผู้ตอบถูก: ' + names + (iWon ? '<br>🎉 คุณตอบถูก! +100' : '');
      banner.style.display = 'block';
    }
    var rb = document.getElementById('trial-reveal-btn');
    if (rb) rb.style.display = 'none';
    var hint = document.getElementById('suspect-pick-hint');
    if (hint) hint.textContent = 'กำลังสรุปผล...';
    appendLobbySystemChat('— เปิดเผยผล: คนร้ายคือผู้ต้องสงสัยหมายเลข ' + (culprit + 1) + ' · ผู้ตอบถูก: ' + names);
    // โชว์คะแนนโหวตสักครู่ แล้วไปหน้าผลเต็มเสมอ (ถูก = เรือนจำไซเบอร์ / ผิด/ไม่โหวต = ภารกิจล้มเหลว)
    if (trialFinalTimer) clearTimeout(trialFinalTimer);
    trialFinalTimer = setTimeout(function () { showFinalResult(correct, culprit); }, 2600);
  }

  var trialFinalTimer = null;
  function injectFinalResultStyle() {
    if (document.getElementById('trial-final-style')) return;
    var R = '/Main-Lobby/IMAGE/Result/';
    var st = document.createElement('style');
    st.id = 'trial-final-style';
    st.textContent =
      '#trial-final{position:fixed;inset:0;z-index:9500;background:#04060c center/cover no-repeat}' +
      '#trial-final.is-hidden{display:none}' +
      // ตัวคนร้ายในช่องคุก (ตอนตอบถูก)
      '#trial-final-culprit{position:absolute;left:50%;top:55%;transform:translate(-50%,-50%);height:52%;width:auto;z-index:2;display:none;filter:drop-shadow(0 0 20px rgba(255,200,80,.55))}' +
      // หัวข้อ "ภารกิจล้มเหลว" (ตอนตอบผิด) วางทับ lose-bg
      '#trial-final-txt{position:absolute;left:50%;top:7%;transform:translateX(-50%);width:780px;max-width:90vw;height:auto;z-index:2;display:none}' +
      '#trial-final-home{position:absolute;left:50%;bottom:5%;transform:translateX(-50%);width:300px;height:104px;max-width:70vw;background:url(' + R + 'btn-gohome.png) center/contain no-repeat;border:none;cursor:pointer;font-size:0;color:transparent;z-index:3;filter:drop-shadow(0 4px 14px rgba(0,0,0,.6))}';
    document.head.appendChild(st);
  }
  function showFinalResult(correct, culprit) {
    injectFinalResultStyle();
    var R = '/Main-Lobby/IMAGE/Result/';
    var CS = '/Main-Lobby/IMAGE/Choose%20a%20suspect/';
    var ov = document.getElementById('trial-final');
    if (!ov) {
      ov = document.createElement('div');
      ov.id = 'trial-final';
      ov.className = 'is-hidden';
      ov.innerHTML = '<img id="trial-final-culprit" alt="คนร้าย"><img id="trial-final-txt" alt="ภารกิจล้มเหลว">' +
        '<button type="button" id="trial-final-home" aria-label="กลับหน้าหลัก">กลับหน้าหลัก</button>';
      document.body.appendChild(ov);
      ov.querySelector('#trial-final-home').addEventListener('click', function () { window.location.href = '/Main-Lobby/'; });
    }
    var culpEl = ov.querySelector('#trial-final-culprit');
    var txtEl = ov.querySelector('#trial-final-txt');
    if (correct) {
      ov.style.backgroundImage = 'url(' + R + 'cyber-prison.png)';
      if (culpEl) { culpEl.src = CS + 'suspect-' + (((typeof culprit === 'number' ? culprit : 0)) + 1) + '.png'; culpEl.style.display = 'block'; }
      if (txtEl) txtEl.style.display = 'none';
    } else {
      ov.style.backgroundImage = 'url(' + R + 'lose-bg.png)';
      if (txtEl) { txtEl.src = R + 'txt-your-lose.png'; txtEl.style.display = 'block'; }
      if (culpEl) culpEl.style.display = 'none';
    }
    ov.classList.remove('is-hidden');
    try { closeSuspectOverlay(); } catch (e) { /* ignore */ }
  }

  /* ===== ห้องสรุปหลักฐาน — การไต่สวน (เลือกหลักฐาน 2 ใบ/ปากคำ ก่อนโหวต) ===== */
  var tmState = { round: 0, members: [], picks: [], submitted: false, mode: 'select' };
  var SUSPECT_NAMES_EN = ['SOMCHAI', 'ARIN', 'JIRAPHA'];

  function injectTestimonyStyle() {
    if (document.getElementById('testimony-style')) return;
    var st = document.createElement('style');
    st.id = 'testimony-style';
    var SC = '/Main-Lobby/IMAGE/Showcard/';
    st.textContent =
      '#testimony-overlay{position:fixed;inset:0;z-index:9000;background:#04060c center/cover no-repeat;display:flex;align-items:center;justify-content:center;font-family:Kanit,system-ui,sans-serif;color:#e7ecff;overflow:hidden}' +
      '#testimony-overlay.is-hidden{display:none}' +
      '.tm-stage{position:relative;width:min(96vw,1560px);aspect-ratio:16/9;max-height:97vh;max-height:97dvh}' +
      // ---- กรอบบน box-1 (title baked) ----
      '.tm-top{position:absolute;left:6%;top:1.5%;width:88%;height:42%;background:url(' + SC + 'box-1.png) center/100% 100% no-repeat}' +
      '.tm-title{position:absolute;left:50%;top:14%;transform:translateX(-50%);white-space:nowrap;font:800 clamp(15px,2.1vw,30px)/1 Kanit;color:#fff;text-shadow:0 0 14px rgba(34,211,238,.6)}' +
      '.tm-sub2{position:absolute;left:50%;top:25%;transform:translateX(-50%);font:600 clamp(10px,1.1vw,16px)/1 Kanit;color:#9fe7ff;white-space:nowrap;max-width:80%;overflow:hidden;text-overflow:ellipsis}' +
      '.tm-suspect{position:absolute;left:3.5%;top:30%;width:12%}' +
      '.tm-sus-frame{position:relative;width:100%;aspect-ratio:291/289;background:url(' + SC + 'suspect-bg.png) center/contain no-repeat;display:flex;align-items:center;justify-content:center}' +
      '.tm-sus-frame img{width:78%;height:78%;object-fit:cover;object-position:center 16%;border-radius:10px}' +
      '.tm-sus-name{text-align:center;margin-top:2px;font:700 clamp(10px,1vw,15px)/1.1 Kanit;color:#bfe9ff}' +
      '.tm-members{position:absolute;left:18%;right:2%;top:34%;bottom:8%;display:flex;gap:1%;align-items:flex-start;justify-content:center;flex-wrap:nowrap;overflow:hidden}' +
      '.tm-member{flex:0 1 17%;max-width:17%;border:2px solid #1e6f8c;border-radius:10px;padding:clamp(4px,0.6vh,8px) 4px;text-align:center;background:rgba(8,20,38,.6);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(2px,0.4vh,6px)}' +
      '.tm-member .tm-mname{font:700 clamp(9px,0.85vw,14px)/1 Kanit;color:#bfe9ff;white-space:nowrap;display:flex;align-items:center;justify-content:center;gap:4px}' +
      '.tm-member .tm-mstat{font:600 clamp(9px,0.8vw,13px)/1.1 Kanit;color:#8aa0c0;display:flex;flex-direction:column;align-items:center;gap:4px}' +
      '.tm-member .tm-mstat img{height:26%;max-height:34px;width:auto}' +
      '.tm-member.tm-ready{border-color:#22c55e;box-shadow:0 0 14px rgba(34,197,94,.5)}.tm-member.tm-ready .tm-mstat{color:#22c55e}' +
      '.tm-member.tm-me{outline:2px solid #22d3ee;outline-offset:2px}' +
      '.tm-crown img{height:14px;width:auto;vertical-align:middle}' +
      // ---- กรอบล่าง tab-0N (แท็บ baked) ----
      '.tm-bottom{position:absolute;left:6%;right:6%;top:47%;bottom:1.5%;background:top center/100% 100% no-repeat}' +
      '.tm-bhead{position:absolute;left:3%;top:17%;font:600 clamp(11px,1.2vw,18px)/1.2 Kanit;color:#cfe9ff}' +
      '.tm-count{position:absolute;right:3%;top:17%;color:#ffd54a;font:700 clamp(12px,1.3vw,20px)/1 Kanit}' +
      '.tm-cards{position:absolute;left:3%;right:3%;top:22%;bottom:6%;display:flex;gap:1.5%;align-items:stretch;justify-content:center}' +
      '.tm-cards .lobby-evidence-card{cursor:pointer;transition:transform .12s,box-shadow .12s;max-height:100%;height:100%;flex:0 1 200px;overflow:hidden}' +
      '#testimony-overlay .lobby-evidence-card-art{height:clamp(40px,8vh,80px);min-height:36px;font-size:0;margin:2px 0;display:flex;align-items:center;justify-content:center;background:rgba(0,40,60,.3);border-radius:6px;overflow:hidden}#testimony-overlay .lobby-evidence-card-art img{width:100%;height:100%;object-fit:cover;border-radius:6px}' +
      '#testimony-overlay .tm-cards .lobby-evidence-card-body{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}' +
      '.tm-cards .lobby-evidence-card.tm-sel{outline:3px solid #22d3ee;outline-offset:2px;transform:translateY(-6px);box-shadow:0 8px 26px rgba(34,211,238,.55)}' +
      '.tm-status{position:absolute;left:3%;bottom:6%;text-align:left;color:#ffd54a;font:600 clamp(11px,1.1vw,16px)/1.3 Kanit}' +
      '.tm-actions{position:absolute;right:3%;bottom:4%;display:flex;gap:1.2%;align-items:center;z-index:4}' +
      '.tm-imgbtn{background:center/contain no-repeat;border:none;cursor:pointer;font-size:0;color:transparent;padding:0}' +
      '.tm-imgbtn:disabled{filter:grayscale(.65) opacity(.45);cursor:not-allowed}' +
      '#tm-submit{width:clamp(150px,15vw,234px);height:clamp(64px,6.5vw,100px);background-image:url(' + SC + 'btn-send.png)}' +
      '#tm-force-reveal{width:clamp(170px,17vw,280px);height:clamp(50px,5vw,84px);background-image:url(' + SC + 'btn-open-card.png)}' +
      // ---- โหมดเปิดเผย (reveal) ----
      '.tm-reveal-grid{position:absolute;left:2%;right:2%;top:5%;bottom:18%;display:flex;gap:1.2%;align-items:flex-start;justify-content:center;overflow-y:auto;overflow-x:hidden}' +
      '.tm-rev-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;min-width:0;max-width:19.5%}' +
      '.tm-rev-col .tm-rev-name{font:700 clamp(9px,0.9vw,14px)/1 Kanit;color:#bfe9ff;display:flex;align-items:center;gap:4px}' +
      '.tm-rev-col .lobby-evidence-card{width:100%;max-width:118px;transform:none;font-size:10px}' +
      '.tm-rev-col .lobby-evidence-card .lobby-evidence-card-body{display:none}' +
      '#tm-ready{position:absolute;left:50%;bottom:2%;transform:translateX(-50%);width:clamp(160px,15vw,240px);height:clamp(62px,6vw,94px);background-image:url(' + SC + 'btn-ready.png)}#tm-mic{position:absolute;right:1%;bottom:1%;width:clamp(44px,4.5vw,68px);height:clamp(44px,4.5vw,68px);border-radius:50%;border:2px solid #22d3ee;background:rgba(8,20,38,.7) center/60% no-repeat;cursor:pointer;z-index:5;display:flex;align-items:center;justify-content:center;font-size:clamp(18px,2vw,28px)}#tm-mic:hover{background-color:rgba(34,211,238,.15)}';
    document.head.appendChild(st);
  }

  function tmEvidenceCardEl(c, linkName, cardIndex, selectable) {
    var rar = String(c.rarity || 'common').toLowerCase();
    if (!LOBBY_EVIDENCE_RARITY[rar]) rar = 'common';
    var nStar = Math.max(1, Math.min(3, Number(c.stars) || 1));
    var stars = ''; for (var st = 0; st < nStar; st++) stars += '★';
    var card = document.createElement('article');
    card.className = 'lobby-evidence-card lobby-evidence-card--' + rar;
    if (selectable) card.setAttribute('data-card-index', String(cardIndex));
    card.innerHTML =
      '<div class="lobby-evidence-card-head"><span class="lobby-evidence-card-icon" aria-hidden="true">🔎</span>' +
      '<div class="lobby-evidence-card-titles"><p class="lobby-evidence-card-title-th"></p><p class="lobby-evidence-card-title-en"></p></div></div>' +
      '<div class="lobby-evidence-card-art" aria-hidden="true"><img src="/Main-Lobby/IMAGE/Showcard/card-bg.png" alt=""></div>' +
      '<p class="lobby-evidence-card-body"></p>' +
      '<div class="lobby-evidence-card-foot"><div class="lobby-evidence-link"><span class="lobby-evidence-avatar"></span><span class="lobby-evidence-link-name"></span></div>' +
      '<div class="lobby-evidence-foot-meta"><span class="lobby-evidence-rarity">(' + LOBBY_EVIDENCE_RARITY[rar] + ')</span><div class="lobby-evidence-stars">' + stars + '</div></div></div>';
    card.querySelector('.lobby-evidence-card-title-th').textContent = c.titleTh || '';
    card.querySelector('.lobby-evidence-card-title-en').textContent = c.titleEn ? '(' + c.titleEn + ')' : '';
    card.querySelector('.lobby-evidence-card-body').textContent = c.body || '';
    card.querySelector('.lobby-evidence-avatar').textContent = (linkName || '?').charAt(0);
    card.querySelector('.lobby-evidence-link-name').textContent = linkName || '';
    return card;
  }

  function tmSuspectData(round) {
    var payload = getLobbyEvidenceCasePayload();
    var suspects = payload.suspects || [];
    var si = Math.max(0, Math.min(suspects.length - 1, round));
    return suspects[si] || { linkName: '?', cards: [] };
  }

  function ensureTestimonyOverlay() {
    var ov = document.getElementById('testimony-overlay');
    if (ov) return ov;
    injectTestimonyStyle();
    var SC = '/Main-Lobby/IMAGE/Showcard/';
    ov = document.createElement('div');
    ov.id = 'testimony-overlay';
    ov.className = 'is-hidden';
    ov.innerHTML =
      '<div class="tm-stage" id="tm-stage">' +
        '<div class="tm-top">' +
          '<div class="tm-title" id="tm-title"></div>' +
          '<div class="tm-sub2" id="tm-sub2"></div>' +
          '<div class="tm-suspect"><div class="tm-sus-frame"><img id="tm-sus-img" alt=""></div><div class="tm-sus-name" id="tm-sus-name"></div></div>' +
          '<div class="tm-members" id="tm-members"></div>' +
        '</div>' +
        '<div class="tm-bottom" id="tm-bottom">' +
          '<div id="tm-select-wrap">' +
            '<div class="tm-bhead">[เลือกพยานหลักฐาน 2 ชิ้น เพื่อประกอบสำนวนคดีนี้]</div>' +
            '<div class="tm-count" id="tm-count">เลือกหลักฐาน 0/2</div>' +
            '<div class="tm-cards" id="tm-cards"></div>' +
            '<div class="tm-status" id="tm-status"></div>' +
            '<div class="tm-actions"><button type="button" class="tm-imgbtn" id="tm-submit" disabled aria-label="ส่งหลักฐาน"></button><button type="button" class="tm-imgbtn" id="tm-force-reveal" style="display:none" aria-label="เปิดหลักฐานทั้งหมด"></button></div>' +
      '<button type="button" id="tm-mic" aria-label="ไมค์">🎤</button>' +
          '</div>' +
          '<div id="tm-reveal-wrap" style="display:none">' +
            '<div class="tm-reveal-grid" id="tm-reveal-grid"></div>' +
            '<button type="button" class="tm-imgbtn" id="tm-ready" aria-label="READY"></button>' +
          '</div>' +
        '</div>' +
      '</div>';
    document.body.appendChild(ov);
    var stg = ov.querySelector('#tm-stage');
    if (stg) stg.style.background = 'url(' + SC + 'bg-showcard.png) center/cover no-repeat #04060c';
    ov.querySelector('#tm-cards').addEventListener('click', function (e) {
      var card = e.target.closest('.lobby-evidence-card'); if (!card || tmState.submitted) return;
      var idx = parseInt(card.getAttribute('data-card-index'), 10);
      if (!(idx >= 0)) return;
      var pos = tmState.picks.indexOf(idx);
      if (pos >= 0) { tmState.picks.splice(pos, 1); card.classList.remove('tm-sel'); }
      else { if (tmState.picks.length >= 2) return; tmState.picks.push(idx); card.classList.add('tm-sel'); }
      tmUpdateCount();
    });
    ov.querySelector('#tm-submit').addEventListener('click', function () {
      if (tmState.picks.length !== 2 || tmState.submitted) return;
      socket.emit('testimony-submit', { picks: tmState.picks.slice(0, 2) }, function (res) {
        if (res && res.ok) { tmState.submitted = true; tmSetStatus('ส่งหลักฐานแล้ว — รอผู้เล่นอื่น...'); document.getElementById('tm-submit').disabled = true; }
        else appendLobbySystemChat('— ส่งหลักฐานไม่สำเร็จ' + (res && res.error ? (' · ' + res.error) : ''));
      });
    });
    ov.querySelector('#tm-force-reveal').addEventListener('click', function () {
      socket.emit('testimony-reveal', {}, function (res) { if (!(res && res.ok)) appendLobbySystemChat('— เปิดเผยไม่สำเร็จ' + (res && res.error ? (' · ' + res.error) : '')); });
    });
    ov.querySelector('#tm-ready').addEventListener('click', function () {
      this.disabled = true;
      socket.emit('testimony-ready-next', {}, function (res) { if (!(res && res.ok)) { document.getElementById('tm-ready').disabled = false; appendLobbySystemChat('— READY ไม่สำเร็จ' + (res && res.error ? (' · ' + res.error) : '')); } });
    });
    return ov;
  }

  function tmSetStatus(txt) { var el = document.getElementById('tm-status'); if (el) el.textContent = txt || ''; }
  function tmUpdateCount() {
    var el = document.getElementById('tm-count'); if (el) el.textContent = 'เลือกหลักฐาน ' + tmState.picks.length + '/2';
    var sub = document.getElementById('tm-submit'); if (sub) sub.disabled = (tmState.picks.length !== 2 || tmState.submitted);
  }

  function tmRenderMembers(submittedIds, readyIds, revealMode) {
    var root = document.getElementById('tm-members'); if (!root) return;
    root.textContent = '';
    (tmState.members || []).forEach(function (m) {
      var d = document.createElement('div');
      d.className = 'tm-member' + (m.id === socket.id ? ' tm-me' : '');
      var done = revealMode ? (readyIds && readyIds.indexOf(m.id) >= 0) : (submittedIds && submittedIds.indexOf(m.id) >= 0);
      if (done) d.classList.add('tm-ready');
      var SC = '/Main-Lobby/IMAGE/Showcard/';
      var crown = m.isHost ? '<span class="tm-crown"><img src="' + SC + 'host-icon.png" alt=""></span>' : '';
      var stat = done
        ? '<img src="' + SC + 'ready-icon.png" alt=""> พร้อม'
        : '<img src="' + SC + 'loading.png" alt=""> ' + (revealMode ? 'กำลังดู..' : 'กำลังเลือก..');
      d.innerHTML = '<div class="tm-mname">' + crown + (m.nickname || '') + '</div><div class="tm-mstat">' + stat + '</div>';
      root.appendChild(d);
    });
  }

  function openTestimony(data) {
    if (typeof closeSuspectOverlay === 'function') closeSuspectOverlay();
    var ov = ensureTestimonyOverlay();
    tmState.round = (data && typeof data.round === 'number') ? data.round : 0;
    tmState.members = (data && Array.isArray(data.members)) ? data.members : [];
    tmState.picks = [];
    tmState.submitted = false;
    tmState.mode = 'select';
    var SC = '/Main-Lobby/IMAGE/Showcard/';
    var CS = '/Main-Lobby/IMAGE/Choose%20a%20suspect/';
    var sd = tmSuspectData(tmState.round);
    document.getElementById('tm-title').textContent = 'การไต่สวน : ปากคำที่ ' + (tmState.round + 1) + ' - ' + (sd.linkName || ('ผู้ต้องสงสัย ' + (tmState.round + 1)));
    document.getElementById('tm-sub2').textContent = '';
    // avatar ผู้ต้องสงสัย + ชื่อ
    var susImg = document.getElementById('tm-sus-img');
    if (susImg) susImg.src = CS + 'suspect-' + (tmState.round + 1) + '.png';
    var susName = document.getElementById('tm-sus-name'); if (susName) susName.textContent = sd.linkName || '';
    // กรอบล่าง = tab ของผู้ต้องสงสัยปัจจุบัน
    var bottom = document.getElementById('tm-bottom');
    if (bottom) { bottom.classList.remove('tm-bottom--reveal'); bottom.style.backgroundImage = 'url(' + SC + 'tab-0' + (tmState.round + 1) + '.png)'; }
    document.getElementById('tm-select-wrap').style.display = 'block';
    document.getElementById('tm-reveal-wrap').style.display = 'none';
    var fr = document.getElementById('tm-force-reveal');
    if (fr) fr.style.display = ((data && data.hostId) === socket.id) ? 'inline-block' : 'none';
    tmSetStatus('');
    // การ์ดของผู้ต้องสงสัยปัจจุบัน (ทุกคนเห็นครบ)
    var cardsRoot = document.getElementById('tm-cards'); cardsRoot.textContent = '';
    (sd.cards || []).forEach(function (c, i) { cardsRoot.appendChild(tmEvidenceCardEl(c, sd.linkName, i, true)); });
    tmUpdateCount();
    tmRenderMembers([], [], false);
    ov.classList.remove('is-hidden');
  }

  function testimonyStatusUpdate(data) {
    if (!data) return;
    tmRenderMembers(data.submitted || [], [], false);
  }

  function testimonyReveal(data) {
    tmState.mode = 'reveal';
    var ov = ensureTestimonyOverlay();
    ov.classList.remove('is-hidden');
    if (data && Array.isArray(data.members)) tmState.members = data.members;
    document.getElementById('tm-select-wrap').style.display = 'none';
    document.getElementById('tm-reveal-wrap').style.display = 'block';
    var bottom = document.getElementById('tm-bottom');
    if (bottom) { bottom.classList.add('tm-bottom--reveal'); bottom.style.backgroundImage = 'none'; }
    document.getElementById('tm-sub2').textContent = '[วิเคราะห์พยานหลักฐานกับทีม ก่อนไปปากคำถัดไป]';
    var rd = document.getElementById('tm-ready'); if (rd) rd.disabled = false;
    var sd = tmSuspectData(tmState.round);
    var SC = '/Main-Lobby/IMAGE/Showcard/';
    var grid = document.getElementById('tm-reveal-grid'); grid.textContent = '';
    var picks = (data && data.picks) || {};
    (tmState.members || []).forEach(function (m) {
      var col = document.createElement('div'); col.className = 'tm-rev-col';
      var nm = document.createElement('div'); nm.className = 'tm-rev-name';
      nm.innerHTML = (m.isHost ? '<span class="tm-crown"><img src="' + SC + 'host-icon.png" alt=""></span> ' : '') + (m.nickname || '');
      col.appendChild(nm);
      var sel = picks[m.id] || [];
      if (!sel.length) { var none = document.createElement('div'); none.className = 'tm-status'; none.textContent = '(ไม่ได้ส่ง)'; col.appendChild(none); }
      sel.forEach(function (ci) { var c = (sd.cards || [])[ci]; if (c) col.appendChild(tmEvidenceCardEl(c, sd.linkName, ci, false)); });
      grid.appendChild(col);
    });
    tmRenderMembers([], [], true);
  }

  function testimonyReadyUpdate(data) {
    tmRenderMembers([], (data && data.ready) || [], true);
  }

  function hideTestimonyOverlay() {
    var ov = document.getElementById('testimony-overlay');
    if (ov) ov.classList.add('is-hidden');
  }

  function applySuspectSelectionVisual(idx) {
    let i = Math.floor(Number(idx));
    if (Number.isNaN(i) || i < 0 || i > 2) i = 0;
    suspectSelectedIndex = i;
    document.querySelectorAll('.suspect-card').forEach((btn) => {
      const j = parseInt(btn.getAttribute('data-index'), 10);
      btn.classList.toggle('suspect-card--selected', j === i);
    });
  }

  function applyDetectiveReturnToLobbyB(data) {
    quizModeActive = false;
    quizPhaseLocal = null;
    quizPlayerLocal = { cannotTrue: false, cannotFalse: false, eliminated: false, score: 0 };
    quizPeersLocked = {};
    try { document.body.classList.remove('room-lobby--quiz-active'); } catch (e) { /* ignore */ }
    hideQuizOverlay();
    const mid = (data && data.mapId) ? String(data.mapId).trim() : POST_CASE_LOBBY_SPACE_ID;
    const reopenSuspect = !!(data && data.suspectPhaseActive);
    const pickIdx = (data && typeof data.suspectPickIndex === 'number') ? data.suspectPickIndex : suspectSelectedIndex;
    if (data && data.cardMinigames) setSuspectCardMinigames(data.cardMinigames);
    if (data && Array.isArray(data.suspectProgress)) setSuspectProgress(data.suspectProgress);
    applyRoomLobbyBTransition({
      mapId: mid,
      peersSnap: (data && data.peersSnap) ? data.peersSnap : [],
      lobbyLevel: (window.__detectiveLobbyMeta && window.__detectiveLobbyMeta.level) || null,
      caseId: (window.__detectiveLobbyMeta && window.__detectiveLobbyMeta.caseId) || null,
    });
    if (reopenSuspect) {
      serverSuspectPhaseActive = true;
      setTimeout(function () {
        openSuspectOverlay(pickIdx);
        updateSuspectFloatingOpenBtn();
        syncLobbyBUiChrome();
        updatePlayersHud();
      }, 500);
    }
    syncLobbyBUiChrome();
    updatePlayersHud();
    appendLobbySystemChat('— จบมินิเกม · กลับ LobbyB แล้ว');
  }

  const SUSPECT_DESIGN_WIDTH = 1200;
  let suspectPickScaleListenersBound = false;

  function scheduleSuspectPickScale() {
    requestAnimationFrame(function () {
      requestAnimationFrame(layoutSuspectPickScale);
    });
  }

  function bindSuspectPickScaleListeners() {
    if (suspectPickScaleListenersBound) return;
    suspectPickScaleListenersBound = true;
    window.addEventListener('resize', function () {
      if (suspectPickOverlayOpen) scheduleSuspectPickScale();
    });
    if (window.visualViewport) {
      window.visualViewport.addEventListener('resize', function () {
        if (suspectPickOverlayOpen) scheduleSuspectPickScale();
      });
    }
    document.querySelectorAll('#suspect-cards-row img, .suspect-pick-title-img, #suspect-btn-start img, #suspect-btn-accuse img').forEach(function (img) {
      img.addEventListener('load', function () {
        if (suspectPickOverlayOpen) scheduleSuspectPickScale();
      });
    });
  }

  function layoutSuspectPickScale() {
    const ov = document.getElementById('suspect-pick-overlay');
    const wrap = document.getElementById('suspect-pick-scale-wrap');
    const inner = wrap && wrap.querySelector('.suspect-pick-inner');
    if (!ov || !wrap || !inner || ov.classList.contains('is-hidden') || !suspectPickOverlayOpen) return;

    inner.style.width = SUSPECT_DESIGN_WIDTH + 'px';
    inner.style.transform = 'none';
    const naturalH = inner.offsetHeight;
    const padX = 24;
    const padY = 40;
    const availW = window.innerWidth - padX * 2;
    const availH = window.innerHeight - padY;
    const sW = availW / SUSPECT_DESIGN_WIDTH;
    const sH = availH / Math.max(1, naturalH);
    const s = Math.min(1, sW, sH);
    inner.style.transformOrigin = 'top center';
    inner.style.transform = 'scale(' + s + ')';
    wrap.style.height = Math.ceil(naturalH * s) + 'px';
    wrap.style.overflow = 'hidden';
  }

  function lobbyMapQueryParam() {
    try {
      return (new URLSearchParams(location.search).get('map') || '').trim();
    } catch (e) {
      return '';
    }
  }

  function isPostCaseLobbyRoom() {
    if (clientLobbyMapId === POST_CASE_LOBBY_SPACE_ID) return true;
    if (lobbyMapQueryParam() === POST_CASE_LOBBY_SPACE_ID) return true;
    if (mapData) {
      const nm = String(mapData.name || '').trim().toLowerCase();
      if (nm === 'lobbyb') return true;
    }
    if (spaceId === POST_CASE_LOBBY_SPACE_ID) return true;
    return false;
  }

  function syncLobbyBUiChrome() {
    const on = isPostCaseLobbyRoom();
    try {
      document.body.classList.toggle('room-lobby--lobby-b', on);
    } catch (e) { /* ignore */ }
    const row = document.getElementById('lobby-b-extra-row');
    if (row) {
      row.classList.toggle('is-hidden', !on);
      row.setAttribute('aria-hidden', on ? 'false' : 'true');
    }
  }

  function updateSuspectFloatingOpenBtn() {
    const btn = document.getElementById('btn-suspect-reopen');
    if (!btn) return;
    const show = !!serverSuspectPhaseActive && !suspectPickOverlayOpen && isPostCaseLobbyRoom();
    btn.classList.toggle('is-hidden', !show);
  }

  /** ชี้ตัวคนร้ายได้ต่อเมื่อสืบครบทั้ง 3 ผู้ต้องสงสัย (เล่นมินิเกมอย่างน้อยการ์ดละ 1 ครั้ง) */
  function allSuspectsInvestigated() {
    return [0, 1, 2].every(function (i) { return ((suspectProgress && suspectProgress[i]) || 0) >= 1; });
  }

  function updateSuspectHostUi() {
    if (!suspectPickOverlayOpen) return;
    if (trialMode) { ensureTrialRevealBtn(); return; } // โหมดพิจารณาคดีคุม UI เอง
    const isHost = hostId === socket.id;
    const canAccuse = isHost && allSuspectsInvestigated();
    const actions = document.getElementById('suspect-pick-actions');
    const accuseBtn = document.getElementById('suspect-btn-accuse');
    const hint = document.getElementById('suspect-pick-hint');
    if (hint) {
      hint.textContent = isHost
        ? (allSuspectsInvestigated()
            ? 'สืบครบทุกผู้ต้องสงสัยแล้ว — กด "ชี้ตัวคนร้าย" เพื่อเข้าสู่การพิจารณาคดี'
            : 'เลือกการ์ดผู้ต้องสงสัยแล้วกดเริ่มสืบสวน (ต้องสืบให้ครบทั้ง 3 ก่อนชี้ตัวคนร้าย)')
        : 'รอ Host เลือกการ์ดและกดเริ่มสืบสวน';
      hint.classList.toggle('is-hidden', false);
    }
    if (actions) {
      actions.classList.toggle('suspect-pick-actions--visible', isHost);
      actions.setAttribute('aria-hidden', isHost ? 'false' : 'true');
    }
    if (accuseBtn) {
      // โชว์ปุ่มชี้ตัวเฉพาะเมื่อ host + สืบครบ 3 ผู้ต้องสงสัยแล้ว
      accuseBtn.classList.toggle('is-hidden', !canAccuse);
      accuseBtn.setAttribute('aria-hidden', canAccuse ? 'false' : 'true');
    }
    document.querySelectorAll('.suspect-card').forEach((c) => {
      c.classList.toggle('suspect-card--host', isHost);
    });
    scheduleSuspectPickScale();
  }

  function openSuspectOverlay(selectedIndex) {
    const ov = document.getElementById('suspect-pick-overlay');
    if (!ov) return;
    bindSuspectPickScaleListeners();
    refreshSuspectCaseLabel();
    suspectPickOverlayOpen = true;
    ov.classList.remove('is-hidden');
    ov.setAttribute('aria-hidden', 'false');
    applySuspectSelectionVisual(typeof selectedIndex === 'number' ? selectedIndex : 0);
    applySuspectProgressVisual();
    updateSuspectHostUi();
    updatePlayersHud();
    updateSuspectFloatingOpenBtn();
  }

  function closeSuspectOverlay() {
    const ov = document.getElementById('suspect-pick-overlay');
    // รีเซ็ตสถานะพิจารณาคดี
    if (trialMode) {
      trialMode = null; myTrialVote = null; trialVoteCounts = [0, 0, 0];
      if (ov) ov.classList.remove('suspect-pick--trial', 'trial-revealed');
      document.querySelectorAll('.suspect-card').forEach(function (c) { c.classList.remove('suspect-card--myvote', 'suspect-card--culprit', 'suspect-card--innocent'); });
      document.querySelectorAll('.trial-vote-badge').forEach(function (b) { b.textContent = ''; });
      var banner = document.getElementById('trial-result-banner'); if (banner) banner.style.display = 'none';
      var rb = document.getElementById('trial-reveal-btn'); if (rb) rb.style.display = 'none';
      var loseEl = document.getElementById('trial-lose-txt'); if (loseEl) loseEl.style.display = 'none';
    }
    const wrap = document.getElementById('suspect-pick-scale-wrap');
    const inner = wrap && wrap.querySelector('.suspect-pick-inner');
    if (inner) {
      inner.style.transform = '';
      inner.style.width = '';
    }
    if (wrap) {
      wrap.style.height = '';
      wrap.style.overflow = '';
    }
    if (ov) {
      ov.classList.add('is-hidden');
      ov.setAttribute('aria-hidden', 'true');
    }
    suspectPickOverlayOpen = false;
    syncLobbyBUiChrome();
    updateSuspectFloatingOpenBtn();
  }

  socket.on('troublesome-offer', (data) => {
    const seconds = (data && Number(data.seconds)) > 0 ? Number(data.seconds) : 15;
    const ov = document.getElementById('troublesome-overlay');
    const secEl = document.getElementById('troublesome-sec');
    if (!ov) return;
    ov.classList.remove('is-hidden');
    if (troublesomeTickTimer) clearInterval(troublesomeTickTimer);
    let left = seconds;
    if (secEl) secEl.textContent = String(left);
    if (troublesomeTimerPausedForTuning) {
      troublesomeTickTimer = null;
      return;
    }
    troublesomeTickTimer = setInterval(() => {
      left -= 1;
      if (secEl) secEl.textContent = String(Math.max(0, left));
      if (left <= 0) {
        if (troublesomeTickTimer) clearInterval(troublesomeTickTimer);
        troublesomeTickTimer = null;
        socket.emit('troublesome-response', { accept: false });
        closeTroublesomeOverlay();
      }
    }, 1000);
  });

  const troublesomeDecline = document.getElementById('troublesome-decline');
  const troublesomeAccept = document.getElementById('troublesome-accept');
  if (troublesomeDecline) {
    troublesomeDecline.addEventListener('click', () => {
      socket.emit('troublesome-response', { accept: false });
      closeTroublesomeOverlay();
    });
  }
  if (troublesomeAccept) {
    troublesomeAccept.addEventListener('click', () => {
      socket.emit('troublesome-response', { accept: true });
      closeTroublesomeOverlay();
    });
  }

  socket.on('suspect-phase-open', (data) => {
    serverSuspectPhaseActive = true;
    if (data && data.hostId != null) hostId = data.hostId;
    if (data && data.cardMinigames) setSuspectCardMinigames(data.cardMinigames);
    if (data && Array.isArray(data.suspectProgress)) setSuspectProgress(data.suspectProgress);
    const idx = (data && typeof data.selectedIndex === 'number') ? data.selectedIndex : 0;
    openSuspectOverlay(idx);
  });

  socket.on('suspect-pick-update', (data) => {
    const idx = (data && typeof data.selectedIndex === 'number') ? data.selectedIndex : 0;
    applySuspectSelectionVisual(idx);
  });

  // ===== ห้องสรุปหลักฐาน (ไต่สวน) =====
  socket.on('testimony-open', (data) => { openTestimony(data || {}); });
  socket.on('testimony-status', (data) => { testimonyStatusUpdate(data || {}); });
  socket.on('testimony-reveal', (data) => { testimonyReveal(data || {}); });
  socket.on('testimony-ready-update', (data) => { testimonyReadyUpdate(data || {}); });

  // ===== ขั้นพิจารณาคดี =====
  socket.on('trial-open', (data) => {
    hideTestimonyOverlay(); // ปิดห้องสรุปหลักฐานก่อนเข้าโหวต
    openTrialVoteUI(data || {});
  });
  socket.on('trial-vote-update', (data) => {
    if (data && Array.isArray(data.counts)) trialVoteCounts = data.counts; // เก็บไว้โชว์ตอนเปิดเผยผล (ไม่โชว์ต่อใบตอนโหวต)
    if (trialMode === 'voting') setTrialCounter((data && data.voted) || 0, (data && data.totalPlayers) || 0);
    const hint = document.getElementById('suspect-pick-hint');
    if (hint && trialMode === 'voting') {
      hint.textContent = 'คลิกการ์ดที่คิดว่าเป็นคนร้าย';
    }
  });
  socket.on('trial-result', (data) => {
    showTrialResult(data || {});
  });

  socket.on('suspect-investigation-start', (data) => {
    serverSuspectPhaseActive = false;
    closeSuspectOverlay();
    const n = (data && typeof data.selectedIndex === 'number') ? (data.selectedIndex + 1) : (suspectSelectedIndex + 1);
    const mgLabel = (data && data.minigameLabel) ? String(data.minigameLabel) : '';
    appendLobbySystemChat('— เริ่มสืบสวน · ผู้ต้องสงสัยหมายเลข ' + n + (mgLabel ? ' · ' + mgLabel : ''));
  });

  /** เลือกการ์ดผู้ต้องสงสัยเท่านั้น — ยังไม่เริ่มมินิเกม */
  function selectSuspectCard(idx) {
    if (!suspectPickOverlayOpen || hostId !== socket.id) return;
    if (idx < 0 || idx > 2) return;
    const prevIdx = suspectSelectedIndex;
    applySuspectSelectionVisual(idx);
    socket.emit('suspect-pick-select', { index: idx });
    if (prevIdx !== idx) {
      appendLobbySystemChat('— เลือกผู้ต้องสงสัยหมายเลข ' + (idx + 1));
    }
  }

  /** เริ่มมินิเกมตามการ์ดที่เลือกแล้ว — กดปุ่มเริ่มสืบสวน / ชี้ตัวคนร้าย */
  function beginSuspectInvestigation(sourceLabel) {
    if (!suspectPickOverlayOpen || hostId !== socket.id) return;
    const idx = suspectSelectedIndex;
    if (idx < 0 || idx > 2) return;
    socket.emit('suspect-pick-start', {}, function (res) {
      if (res && res.ok) return;
      const err = (res && res.error) ? String(res.error) : (sourceLabel || 'เริ่มสืบสวนไม่สำเร็จ');
      appendLobbySystemChat('— ' + err);
      try { console.warn('suspect-pick-start', res); } catch (e2) { /* ignore */ }
    });
  }

  document.getElementById('suspect-cards-row')?.addEventListener('click', (ev) => {
    const card = ev.target.closest('.suspect-card');
    if (!card || !suspectPickOverlayOpen) return;
    const idx = parseInt(card.getAttribute('data-index'), 10);
    if (!(idx >= 0 && idx <= 2)) return;
    if (trialMode === 'voting') { castTrialVote(idx); return; } // โหมดโหวต: ทุกคนคลิกได้
    if (trialMode === 'revealed') return;
    if (hostId !== socket.id) return;
    selectSuspectCard(idx);
  });

  document.getElementById('suspect-btn-start')?.addEventListener('click', () => {
    beginSuspectInvestigation('เริ่มสืบสวนไม่สำเร็จ');
  });

  document.getElementById('suspect-btn-accuse')?.addEventListener('click', () => {
    if (!suspectPickOverlayOpen || hostId !== socket.id) return;
    if (!allSuspectsInvestigated()) {
      appendLobbySystemChat('— ต้องสืบให้ครบทั้ง 3 ผู้ต้องสงสัยก่อน จึงจะชี้ตัวคนร้ายได้');
      return;
    }
    // เข้าสู่ขั้นพิจารณาคดี/โหวต (ไม่ใช่เริ่มมินิเกม)
    socket.emit('suspect-accuse-open', {}, function (res) {
      if (!(res && res.ok)) appendLobbySystemChat('— เปิดพิจารณาคดีไม่สำเร็จ' + (res && res.error ? (' · ' + res.error) : ''));
    });
  });

  document.getElementById('suspect-pick-close')?.addEventListener('click', () => {
    if (!suspectPickOverlayOpen) return;
    closeSuspectOverlay();
  });

  document.getElementById('btn-suspect-reopen')?.addEventListener('click', () => {
    if (!serverSuspectPhaseActive || suspectPickOverlayOpen) return;
    openSuspectOverlay(suspectSelectedIndex);
  });

  function applyRoomLobbyBTransition(data) {
    const mid = (data && data.mapId) ? String(data.mapId).trim() : '';
    if (!mid) return;
    fetch(SERVER + '/api/maps/' + encodeURIComponent(mid))
      .then(function (r) { return r.ok ? r.json() : null; })
      .then(function (json) {
        if (!json) {
          appendLobbySystemChat('— โหลดแผนที่ LobbyB ไม่สำเร็จ');
          return;
        }
        serverSuspectPhaseActive = false;
        clientLobbyMapId = mid;
        mapData = json;
        closeSuspectOverlay();
        if (!mapData.interactive) mapData.interactive = [];
        if (!mapData.startGameArea) mapData.startGameArea = [];
        if (!mapData.quizTrueArea) mapData.quizTrueArea = [];
        if (!mapData.quizFalseArea) mapData.quizFalseArea = [];
        if (!mapData.quizQuestionArea) mapData.quizQuestionArea = [];
        ROOM_CZ_SPOT = null;
        ROOM_HC_SPOT = null;
        markRoomCzInteractiveCell();
        markHostHcInteractiveCell();
        (data.peersSnap || []).forEach(function (row) {
          if (!row || !row.id) return;
          const p = peers.get(row.id);
          if (!p) return;
          p.x = row.x;
          p.y = row.y;
          p.direction = row.direction || 'down';
          if (row.nickname) p.nickname = row.nickname;
          p.ready = !!row.ready;
          if (row.characterId != null) p.characterId = row.characterId;
        });
        const meAfter = peers.get(socket.id);
        if (readyCheck && meAfter) {
          readyCheck.checked = !!meAfter.ready;
          updateReadyLabelVisual();
        }
        if (mapData.backgroundImage) {
          mapBackgroundImg = new Image();
          mapBackgroundImg.onload = function () { resizeAndDraw(); };
          mapBackgroundImg.src = mapData.backgroundImage;
        } else {
          mapBackgroundImg = null;
        }
        lobbyPath = [];
        try {
          window.__detectiveLobbyMeta = {
            level: data.lobbyLevel || null,
            caseId: data.caseId || null
          };
        } catch (e) { /* ignore */ }
        troublesomeEligibleSent = false;
        resizeAndDraw();
        updateHostStartGameButton();
        renderPeers();
        ensureReadyControlEnabled();
        if (data.cardMinigames) setSuspectCardMinigames(data.cardMinigames);
        if (Array.isArray(data.suspectProgress)) setSuspectProgress(data.suspectProgress);
        if (lobbyBotSlotCount > 0) syncLobbyCaseBots();
        appendLobbySystemChat('— ย้ายไป LobbyB แล้ว · ห้องนี้ไม่รับผู้เล่นใหม่');
        tryTroublesomeLobbyGate();
        updateSuspectFloatingOpenBtn();
        syncLobbyBUiChrome();
        updatePlayersHud();
        try {
          if (String(mid) === POST_CASE_LOBBY_SPACE_ID) {
            var u = new URL(window.location.href);
            u.searchParams.set('map', POST_CASE_LOBBY_SPACE_ID);
            history.replaceState({}, '', u.pathname + u.search);
          }
        } catch (e3) { /* ignore */ }
      })
      .catch(function () {
        appendLobbySystemChat('— โหลดแผนที่ LobbyB ไม่สำเร็จ');
      });
  }

  function focusLobbyMapCanvas() {
    try {
      if (canvas && typeof canvas.focus === 'function') canvas.focus({ preventScroll: true });
    } catch (e) { /* ignore */ }
  }

  function applyLobbyPeersSnapFromServer(rows) {
    if (!rows || !rows.length) return;
    rows.forEach(function (row) {
      if (!row || !row.id) return;
      const p = peers.get(row.id);
      if (!p) return;
      p.x = row.x;
      p.y = row.y;
      p.direction = row.direction || 'down';
      if (row.nickname) p.nickname = row.nickname;
      p.ready = !!row.ready;
      if (row.characterId != null) p.characterId = row.characterId;
    });
    const meAfter = peers.get(socket.id);
    if (readyCheck && meAfter) {
      readyCheck.checked = !!meAfter.ready;
      updateReadyLabelVisual();
    }
  }

  function applyQuizGameStartInLobby(data) {
    quizModeActive = true;
    quizPlayerLocal = { cannotTrue: false, cannotFalse: false, eliminated: false, score: 0 };
    quizPeersLocked = {};
    lastQuizQuestionText = '';
    lastQuizScores = {};
    try { document.body.classList.add('room-lobby--quiz-active'); } catch (e) { /* ignore */ }
    showQuizOverlay();
    initQuizScoreboardZeros();
    var qWait = document.getElementById('quiz-game-question');
    if (qWait) qWait.textContent = 'กำลังโหลดคำถาม…';
    var phaseWait = document.getElementById('quiz-game-phase-label');
    if (phaseWait) phaseWait.textContent = 'เกมตอบคำถาม';
    appendLobbySystemChat('— เริ่มเกมตอบคำถาม (เวลาอ่าน/ตอบตั้งใน Admin → คำถามเกม)');
    focusLobbyMapCanvas();
  }

  socket.on('game-start', (data) => {
    if (data && data.detectiveReturn && data.stayInRoomLobby) {
      applyDetectiveReturnToLobbyB(data);
      return;
    }
    serverSuspectPhaseActive = false;
    closeTroublesomeOverlay();
    closeSuspectOverlay();
    closeLobbyPreplayWizard();
    if (data && data.cardMinigames) setSuspectCardMinigames(data.cardMinigames);
    if (data && Array.isArray(data.suspectProgress)) setSuspectProgress(data.suspectProgress);
    if (data && data.quizMode && data.stayInRoomLobby) {
      const qMid = (data.mapId != null) ? String(data.mapId).trim() : '';
      applyLobbyPeersSnapFromServer(data.peersSnap);
      lobbyPath = [];
      applyQuizGameStartInLobby(data);
      if (qMid) {
        fetch(SERVER + '/api/maps/' + encodeURIComponent(qMid))
          .then(function (r) { return r.ok ? r.json() : null; })
          .then(function (json) {
            if (json) {
              mapData = json;
              clientLobbyMapId = qMid;
              if (!mapData.interactive) mapData.interactive = [];
              if (!mapData.startGameArea) mapData.startGameArea = [];
              if (!mapData.quizTrueArea) mapData.quizTrueArea = [];
              if (!mapData.quizFalseArea) mapData.quizFalseArea = [];
              if (!mapData.quizQuestionArea) mapData.quizQuestionArea = [];
              ROOM_CZ_SPOT = null; // คำนวณจุดแต่งตัวใหม่ตาม map เกมที่โหลด
              markRoomCzInteractiveCell();
              if (mapData.backgroundImage) {
                mapBackgroundImg = new Image();
                mapBackgroundImg.onload = function () { resizeAndDraw(); };
                mapBackgroundImg.src = mapData.backgroundImage;
              } else {
                mapBackgroundImg = null;
              }
              syncLobbyBUiChrome();
              try {
                var u = new URL(window.location.href);
                u.searchParams.set('map', qMid);
                history.replaceState({}, '', u.pathname + u.search);
              } catch (e2) { /* ignore */ }
            } else {
              appendLobbySystemChat('— โหลดไฟล์แผนที่เกมไม่สำเร็จ — รีเฟรชหรือเช็คว่ามีฉาก ' + qMid + ' บนเซิร์ฟ');
            }
            resizeAndDraw();
            renderPeers();
            redrawLobbyMap();
          })
          .catch(function () {
            appendLobbySystemChat('— โหลดแผนที่เกมล้มเหลว');
            resizeAndDraw();
            renderPeers();
            redrawLobbyMap();
          });
        return;
      }
      return;
    }
    const mid = (data && data.mapId != null) ? String(data.mapId).trim() : '';
    const lobbyLevelStr = (data && data.lobbyLevel != null) ? String(data.lobbyLevel) : '';
    const caseIdStr = (data && data.caseId != null) ? String(data.caseId) : '';
    const isLobbyBMap = mid === POST_CASE_LOBBY_SPACE_ID;
    const detectiveMeta = !!(lobbyLevelStr || caseIdStr);
    /* LobbyB = แผนที่ mn8nx46h — ต้องอยู่ room-lobby เสมอ ห้ามไป play.html (จะโดน joinLocked แล้วเด้ง lobby) */
    if (data && (data.stayInRoomLobby || isLobbyBMap || (detectiveMeta && !mid && isCurrentRoomLobbyA()))) {
      applyRoomLobbyBTransition({
        mapId: mid || POST_CASE_LOBBY_SPACE_ID,
        lobbyLevel: data.lobbyLevel != null ? data.lobbyLevel : lobbyLevelStr,
        caseId: data.caseId != null ? data.caseId : caseIdStr,
        peersSnap: (data && data.peersSnap) ? data.peersSnap : []
      });
      return;
    }
    if (data && data.detectiveMinigame) {
      try { sessionStorage.setItem('detectiveMinigameReturn', '1'); } catch (e) { /* ignore */ }
    }
    try {
      var avEl = document.getElementById('room-lobby-profile-avatar');
      var cidPlay = getStoredCharacterId();
      if (avEl && avEl.src && cidPlay && String(avEl.src).indexOf('data:image/') === 0) {
        sessionStorage.setItem('justicePlayLobbyAvatar:' + cidPlay, avEl.src);
      }
    } catch (eAv) { /* ignore */ }
    let q = 'play.html?space=' + encodeURIComponent(spaceId) + '&nick=' + encodeURIComponent(getProfileDisplayName());
    if (mid) q += '&map=' + encodeURIComponent(mid);
    if (lobbyLevelStr) q += '&lobbyLevel=' + encodeURIComponent(lobbyLevelStr);
    if (caseIdStr) q += '&case=' + encodeURIComponent(caseIdStr);
    if (data && data.detectiveMinigame) q += '&detectiveReturn=1';
    location.href = q;
  });

  document.addEventListener('keydown', (e) => {
    if (moveCodes.includes(e.code) && !isChatFocused()) {
      if (suspectPickOverlayOpen) { e.preventDefault(); return; }
      keys[e.code] = true;
      e.preventDefault();
    }
    if (e.code === 'Escape' && !e.repeat && !isChatFocused()) {
      const hostConsoleOv = document.getElementById('host-console-overlay');
      if (hostConsoleOv && !hostConsoleOv.classList.contains('is-hidden')) {
        hostConsoleOverlay.close();
        e.preventDefault();
        return;
      }
      const profileOv = document.getElementById('room-lobby-profile-overlay');
      if (profileOv && !profileOv.classList.contains('is-hidden')) {
        roomLobbyProfileOverlay.close();
        e.preventDefault();
        return;
      }
      const evOv = document.getElementById('lobby-evidence-overlay');
      if (evOv && !evOv.classList.contains('is-hidden')) {
        closeLobbyEvidenceModal();
        e.preventDefault();
        return;
      }
      const rankOv = document.getElementById('lobby-rank-overlay');
      if (rankOv && !rankOv.classList.contains('is-hidden')) {
        closeLobbyRankModal();
        e.preventDefault();
        return;
      }
      if (suspectPickOverlayOpen) {
        closeSuspectOverlay();
        e.preventDefault();
        return;
      }
      getPreplayEls();
      if (preplayOverlay && !preplayOverlay.classList.contains('is-hidden')) {
        if (preplayCaseDetailOverlay && !preplayCaseDetailOverlay.classList.contains('is-hidden')) {
          preplayCaseDetailOverlay.classList.add('is-hidden');
        } else {
          closeLobbyPreplayWizard();
        }
        e.preventDefault();
        return;
      }
    }
    if (isLobbyInteractKeyDown(e) && !e.repeat && !isChatFocused()) {
      if (suspectPickOverlayOpen) return;
      getPreplayEls();
      if (preplayOverlay && !preplayOverlay.classList.contains('is-hidden')) {
        return;
      }
      const me = peers.get(socket.id);
      if (!mapData || !me) return;
      e.preventDefault();
      /* ทุก F ในโถง — ต้องกดพร้อมก่อน (รวม Host เลือกระดับ/คดี และช่องเขียว) */
      const target = getLobbyInteractTarget(me);
      if (isRoomCzInteractTarget(target) || isNearRoomCzSpot(me)) {
        e.preventDefault();
        openRoomCustomize();
        return;
      }
      if (isHostHcInteractTarget(target) || isNearHostHcSpot(me)) {
        e.preventDefault();
        openHostConsoleIfHost();
        return;
      }
      /* F อื่นในโถง (Host เลือกระดับ/คดี และช่องเขียว) — ต้องกดพร้อมก่อน */
      if (!me.ready) {
        appendLobbySystemChat('— กดพร้อมก่อน แล้วค่อยกด F');
        return;
      }
      if (hostCanOpenLobbyAPreplayWithF()) {
        openLobbyPreplayWizard();
        return;
      }
      if (!target) {
        if (isCurrentRoomLobbyA() && hostId !== socket.id) {
          appendLobbySystemChat('— เฉพาะ Host กด F เพื่อเลือกระดับและคดี');
        }
        return;
      }
      e.preventDefault();
      socket.emit('lobby-interact', { x: target.x, y: target.y }, (res) => {
        if (res && res.ok) return;
        if (res && res.error) appendLobbySystemChat('— ' + res.error);
      });
    }
  });
  document.addEventListener('keyup', (e) => {
    if (moveCodes.includes(e.code)) keys[e.code] = false;
  });

  var lobbyZoomPctEl = document.getElementById('lobby-zoom-pct');
  var lobbyZoomPctHideTimer = null;
  function showZoomPct() {
    if (!lobbyZoomPctEl) return;
    var pct = Math.round(lobbyZoom * 100);
    lobbyZoomPctEl.textContent = pct + '%';
    lobbyZoomPctEl.classList.add('lobby-zoom-pct-visible');
    if (lobbyZoomPctHideTimer) clearTimeout(lobbyZoomPctHideTimer);
    lobbyZoomPctHideTimer = setTimeout(function () {
      lobbyZoomPctEl.classList.remove('lobby-zoom-pct-visible');
      lobbyZoomPctHideTimer = null;
    }, 1500);
  }
  if (canvas) {
    canvas.addEventListener('pointerdown', () => { focusLobbyMapCanvas(); });
    canvas.addEventListener('wheel', (e) => {
      e.preventDefault();
      lobbyZoom *= e.deltaY > 0 ? 0.9 : 1.1;
      lobbyZoom = Math.max(LOBBY_ZOOM_MIN, Math.min(LOBBY_ZOOM_MAX, lobbyZoom));
      redrawLobbyMap();
      showZoomPct();
    }, { passive: false });
    canvas.addEventListener('dblclick', (e) => {
      if (!mapData) return;
      const me = peers.get(socket.id);
      if (!me) return;
      const r = canvas.getBoundingClientRect();
      const sx = e.clientX - r.left;
      const sy = e.clientY - r.top;
      const { cw, ch, lobbyZoom: z, tileSize: t, meX, meY, w, h } = mapTransform;
      const gx = (sx - cw / 2) / (z * t) + meX;
      const gy = (sy - ch / 2) / (z * t) + meY;
      const tx = Math.floor(gx);
      const ty = Math.floor(gy);
      if (tx < 0 || tx >= w || ty < 0 || ty >= h) return;
      if (!canWalkLobby(tx + 0.5, ty + 0.5)) return;
      const targX = tx + 0.5, targY = ty + 0.5;
      const path = pathfindLobby(me.x, me.y, targX, targY);
      if (path.length <= 1) return;
      lobbyPath = path.slice(1);
    });
  }

  if (readyCheck) {
    ensureReadyControlEnabled();
    updateReadyLabelVisual();
    readyCheck.addEventListener('change', () => {
      const ready = readyCheck.checked;
      const me = peers.get(socket.id);
      if (me) me.ready = ready;
      updateReadyLabelVisual();
      renderPeers();
      redrawLobbyMap();
      socket.emit('set-ready', { ready });
      requestAnimationFrame(focusLobbyMapCanvas);
    });
  }

  if (btnStart) {
    btnStart.addEventListener('click', () => {
      if (isCurrentRoomLobbyA()) return;
      const mapId = (playMapSelect && playMapSelect.value) ? playMapSelect.value.trim() : '';
      socket.emit('start-game', { mapId: mapId || undefined }, (res) => {
        if (res && res.ok === false && res.error) {
          try { alert(res.error); } catch (e) { /* ignore */ }
        }
      });
    });
  }

  const btnLeaveLobby = document.getElementById('btn-leave-lobby');
  if (btnLeaveLobby) {
    btnLeaveLobby.addEventListener('click', () => {
      window.location.href = CREATE_ROOM_URL;
    });
  }

  window.addEventListener('resize', resizeAndDraw);
  const wrapEl = document.getElementById('lobby-map-wrap');
  if (wrapEl && typeof ResizeObserver !== 'undefined') {
    new ResizeObserver(() => resizeAndDraw()).observe(wrapEl);
  }
  resizeAndDraw();
  setTimeout(resizeAndDraw, 100);
  updateLobbyProfileAvatar();
  setupRoomCustomize();
  rlEnsureManifest(function () {
    rlResolveMyColors(function () {
      updateRoomProfileAvatarTinted();
      preloadMyTintedCharacter(function () {
        preloadAllLobbyTintedOccupants(function () {
          roomPreloadReady = true;
          maybeHideRoomLoading();
        });
      });
    });
  });

  window.addEventListener('pageshow', function () {
    syncLobbyAvatarFromStorage();
    rlResolveMyColors();
  });
  document.addEventListener('visibilitychange', function () {
    if (document.visibilityState === 'visible') syncLobbyAvatarFromStorage();
  });
  window.addEventListener('storage', function (e) {
    if (e.key == null || e.key === 'gameCharacterId') syncLobbyAvatarFromStorage();
  });
})();