:root {
  /* Shared color palette for winter/night feel */
  --bg: #0b1220;
  --text: #eaf2ff;
  --muted: #9fb3d1;
  --gold: #f7c948;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell,
    "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji",
    "Segoe UI Symbol";
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a2747 0%, rgba(26, 39, 71, 0) 60%),
    radial-gradient(900px 500px at 110% -20%, #16213e 0%, rgba(22, 33, 62, 0) 60%),
    var(--bg);
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

header {
  padding: clamp(24px, 4vw, 70px) 20px 8px;
  text-align: center;
  flex: 0 0 auto;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4.5vw, 48px);
  letter-spacing: 0.5px;
  color: gold;
}

.subtitle {
  color: var(--muted);
  font-size: clamp(14px, 2vw, 18px);
  margin-bottom: 16px;
}

.grid {
  --grid-gap: clamp(12px, 1.8vw, 20px);
  width: min(calc(100vw - 32px), clamp(360px, (100vh - 260px) * 1.5, 1100px));
  aspect-ratio: 6 / 4;
  margin: clamp(8px, 2vh, 24px) auto;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-template-rows: repeat(4, minmax(0, 1fr));
  gap: var(--grid-gap);
}

.finale-panel {
  width: min(calc(100vw - 32px), 860px);
  margin: 16px auto clamp(24px, 4vh, 48px);
  padding: 24px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(9, 14, 30, 0.85);
  backdrop-filter: blur(6px);
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.finale-panel__lead {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 20px);
}

.finale-panel__input {
  width: 100%;
}

.finale-hint {
  color: #ff7961;
}

.finale-message {
  border-radius: 16px;
  border: 1px solid rgba(247, 201, 72, 0.4);
  background: rgba(247, 201, 72, 0.05);
  padding: 18px;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.6;
  color: #ffe9b0;
  text-align: center;
}

.finale-message-link {
  color: var(--gold);
  text-decoration: none;
  font-weight: 600;
}

.finale-highlight {
  color: #f7c948;
  text-decoration: none;
  font-weight: 600;
}

.finale-panel--unlocked {
  border-color: rgba(247, 201, 72, 0.6);
  box-shadow: 0 0 35px rgba(247, 201, 72, 0.25);
}

.grid.grid--complete {
  gap: 0;
  width: min(calc(100vw - 16px), clamp(480px, (100vh - 140px) * 1.5, 1600px));
  margin: clamp(8px, 1vh, 18px) auto;
}

.door {
  position: relative;
  aspect-ratio: 1 / 1;
  background: linear-gradient(180deg, #172446, #0e1834);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  overflow: hidden;
  cursor: pointer;
  transform: translateY(0);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    border-color 0.18s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: clamp(20px, 2vw, 30px);
  color: var(--gold);
  text-shadow: 0 1px 0 #7a5c00;
}
.door__preview {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  object-fit: cover;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 0;
  pointer-events: none;
}

.door.has-preview .door__preview {
  opacity: 0.45;
}

.door span {
  position: relative;
  z-index: 1;
}

.door:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  border-color: rgba(255, 255, 255, 0.22);
}

.door:disabled,
.door--locked {
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
  transform: none;
}

.grid.grid--complete .door {
  border-radius: 0;
  border: 0;
  background: none;
  transform: none;
  box-shadow: none;
  cursor: pointer;
}

.grid.grid--complete .door:hover {
  transform: none;
  box-shadow: none;
}

.grid.grid--complete .door__preview {
  opacity: 1;
}

.grid.grid--complete .door span {
  opacity: 0;
}


dialog {
  border: none;
  border-radius: 16px;
  padding: 0;
  width: min(1280px, 96vw);
  max-height: 94vh;
  background: #0f1730;
  color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
}

dialog:not([open]) {
  display: none;
}

dialog::backdrop {
  background: rgba(6, 10, 20, 0.6);
}

.modal-head {
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 0 0 auto;
}

.modal-body {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  flex: 1 1 auto;
  align-items: center;
}

.game-panel {
  width: min(1200px, 96vw);
  aspect-ratio: 8 / 5;
  min-width: min(960px, 96vw);
  min-height: min(600px, 72vh);
  max-height: 75vh;
  border-radius: 12px;
  overflow: hidden;
  background: #05070f;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.game-panel canvas {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: #000;
}
.game-panel iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: #000;
}

.unity-shell {
  position: relative;
  width: 100%;
  height: 100%;
  background: #05070f;
  display: flex;
  align-items: center;
  justify-content: center;
}

.unity-loading {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: none;
  min-width: 200px;
}

#unity-progress-bar-empty {
  width: 220px;
  height: 16px;
  border-radius: 10px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.12);
}

#unity-progress-bar-full {
  width: 0%;
  height: 100%;
  background: linear-gradient(180deg, #ffd36e, #f7c948);
  transition: width 0.2s ease;
}

.unity-warning {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  padding: 8px 10px;
  display: none;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  font-size: 12px;
  color: #f7f8ff;
}

.unity-warning.error {
  border-color: #ff8a80;
  color: #ffe0e0;
}

.unity-warning.warning {
  border-color: #ffd36e;
  color: #fff3d1;
}

.modal-body img {
  width: 100%;
  height: auto;
  max-width: min(1200px, 96vw);
  max-height: 75vh;
  object-fit: contain;
  align-self: center;
  border-radius: 12px;
  display: block;
}

.input-row {
  display: flex;
  gap: 8px;
}

.input-row input {
  flex: 1;
  border-radius: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 14px;
}

.btn.primary {
  background: linear-gradient(180deg, #ffd36e, #f7c948);
  color: #1a1f2e;
  border-color: rgba(0, 0, 0, 0.12);
  font-weight: 600;
}

footer {
  color: var(--muted);
  text-align: center;
  padding: 8px 0 8px;
  font-size: 10px;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer-track {
  position: relative;
  width: 100vw;
  height: 120px;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  overflow: visible;
}

.footer-track::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 28px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 12px rgba(5, 7, 15, 0.8) inset;
}

.footer-text {
  position: absolute;
  left: 32px;
  bottom: 44px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s ease;
  z-index: 1;
}

.footer-link {
  color: var(--gold);
  text-decoration: none;
  font-weight: 600;
}

.footer-link:hover {
  color: #ffe89c;
  text-decoration: underline;
}

.footer-robot {
  position: absolute;
  bottom: 20px;
  left: 24px;
  width: 80px;
  height: 80px;
  background: url("../../assets/Robot.png") center/contain no-repeat;
  image-rendering: optimizeQuality;
  /* box-shadow: 0 6px 14px rgba(0, 0, 0, 0.4); */
  transform: translate3d(0, 0, 0);
  z-index: 2;
}

.footer-robot.robot-left {
  background-image: url("../../assets/Robot2.png");
}

.footer-hint {
  font-size: 11px;
  color: rgba(234, 242, 255, 0.65);
}

.lights {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 140px;
  background: url("../../assets/XMasLights.png") repeat-x top center;
  background-size: 320px auto;
  pointer-events: none;
  z-index: 20;
  opacity: 0.9;
  mix-blend-mode: multiply;
  transition: mix-blend-mode 0.2s ease, opacity 0.2s ease;
}

.lights.lights-on {
  mix-blend-mode: normal;
  opacity: 1;
}

@media (max-width: 1900px), (max-height: 1000px) {
  header {
    padding: clamp(16px, 3vw, 40px) 12px 6px;
  }

  .grid {
    width: min(calc(100vw - 24px), clamp(300px, (100vh - 220px) * 1.5, 820px));
    aspect-ratio: 6 / 4;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-template-rows: repeat(4, minmax(0, 1fr));
    gap: clamp(8px, 1.2vw, 16px);
  }

  .door {
    font-size: clamp(16px, 1.6vw, 24px);
  }

  footer {
    padding-bottom: 6px;
  }

  .footer-track {
    height: 100px;
  }

  .footer-text {
    font-size: 12px;
    bottom: 36px;
  }

  .footer-robot {
    width: 64px;
    height: 64px;
    bottom: 12px;
  }

  .game-panel {
    min-width: min(800px, 90vw);
    min-height: min(520px, 60vh);
  }
}

/* Snow (pure CSS for a tiny festive vibe) */
.snow {
  pointer-events: none;
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  display: block;
}

.snow canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.flake {
  position: absolute;
  top: -20px;
  width: 24px;
  height: 24px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 48 48'%3E%3Cg fill='none' stroke='%23ffffff' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M24 4L24 44M24 10L28 14M24 10L20 14M24 38L28 34M24 38L20 34'/%3E%3Cg transform='rotate(60 24 24)'%3E%3Cpath d='M24 4L24 44M24 10L28 14M24 10L20 14M24 38L28 34M24 38L20 34'/%3E%3C/g%3E%3Cg transform='rotate(120 24 24)'%3E%3Cpath d='M24 4L24 44M24 10L28 14M24 10L20 14M24 38L28 34M24 38L20 34'/%3E%3C/g%3E%3C/g%3E%3Cpath d='M24 12L34 18L34 30L24 36L14 30L14 18Z' fill='none' stroke='%23ffffff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M24 12L24 36M14 18L34 30M34 18L14 30' stroke='%23ffffff' stroke-width='1.3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0.8;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.45));
  transform-origin: center;
  animation: fall linear infinite;
}

@keyframes fall {
  to {
    transform: translate3d(0, 110vh, 0) rotate(360deg);
  }
}