* { box-sizing: border-box; }

html {
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  font-family: 'Segoe UI', system-ui, sans-serif;
  color: #fff;
}

/* ---- พื้นหลัง ---- */
.menu-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  overflow: hidden;
}

.menu-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ---- ตัวละคร (เหมือน Login) ---- */
.menu-char-layer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  pointer-events: none;
  display: flex;
  justify-content: center;
  align-items: center;
}

.menu-char-img {
  width: 100%;
  height: 100%;
  max-height: 72vh;
  object-fit: contain;
  object-position: center;
}

/* ---- Vignette fade สีดำ (เหมือน mock) ---- */
.menu-vignette {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 0%, transparent 30%, rgba(0, 0, 0, 0.3) 50%, rgba(0, 0, 0, 0.6) 70%, rgba(0, 0, 0, 0.85) 85%, rgba(0, 0, 0, 0.95) 100%);
}

/* ---- ชั้น UI ทั้งหมด ---- */
.menu-ui {
  position: relative;
  z-index: 3;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ---- ปุ่มย้อนกลับ มุมซ้ายบน (ขนาดเดียวกับ Create Room) ---- */
.menu-btn-back {
  position: absolute;
  top: clamp(0.5rem, 2vw, 2rem);
  left: clamp(0.5rem, 2vw, 2rem);
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  z-index: 10;
}

.menu-btn-back-img {
  display: block;
  width: clamp(40px, 10vw, 60px);
  height: auto;
  object-fit: contain;
}

/* ---- Logo กลางบน ---- */
.menu-logo {
  position: absolute;
  top: clamp(1rem, 6vh, 5rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  width: clamp(300px, 60vw, 600px);
  max-width: 90%;
}

.menu-logo-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* ---- ปุ่มหลัก 3 ปุ่มกลาง ---- */
.menu-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
  z-index: 5;
  margin-top: clamp(6rem, 18vh, 15rem);
  width: 100%;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.menu-btn-create,
.menu-btn-join,
.menu-btn-exit {
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  width: 315px;
  max-width: 100%;
  transition: transform 0.15s, opacity 0.15s;
  display: flex;
  justify-content: center;
  align-items: center;
}

.menu-btn-exit {
  margin-top: clamp(1rem, 3vw, 2rem);
}

.menu-btn-create:hover,
.menu-btn-join:hover,
.menu-btn-exit:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

.menu-btn-create:active,
.menu-btn-join:active,
.menu-btn-exit:active {
  transform: scale(0.98);
}

.menu-btn-create-img,
.menu-btn-join-img,
.menu-btn-exit-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* ---- Responsive สำหรับหน้าจอเล็ก ---- */
@media (max-width: 768px) {
  .menu-logo {
    top: clamp(0.5rem, 4vh, 3rem);
    width: clamp(250px, 70vw, 500px);
  }

  .menu-buttons {
    margin-top: clamp(4rem, 15vh, 12rem);
    gap: clamp(20px, 2vw, 26px);
  }

  .menu-btn-create,
  .menu-btn-join,
  .menu-btn-exit {
    width: min(315px, 80vw);
  }

  .menu-btn-back-img {
    width: clamp(40px, 10vw, 60px);
  }
}

@media (max-width: 480px) {
  .menu-logo {
    top: clamp(0.25rem, 3vh, 2rem);
    width: clamp(200px, 80vw, 400px);
  }

  .menu-buttons {
    margin-top: clamp(3rem, 12vh, 10rem);
    gap: clamp(18px, 1.5vw, 24px);
  }

  .menu-btn-create,
  .menu-btn-join,
  .menu-btn-exit {
    width: min(280px, 85vw);
  }

  .menu-btn-back {
    top: clamp(0.25rem, 1.5vw, 1rem);
    left: clamp(0.25rem, 1.5vw, 1rem);
  }

  .menu-btn-back-img {
    width: clamp(40px, 10vw, 60px);
  }
}

/* ---- Responsive สำหรับหน้าจอใหญ่ ---- */
@media (min-width: 1920px) {
  .menu-logo {
    width: min(700px, 50vw);
  }

  .menu-btn-create,
  .menu-btn-join,
  .menu-btn-exit {
    width: 315px;
  }
}