:root {
  --bg: #0b0a1a;
  --bg2: #14112e;
  --ink: #e6ddff;
  --accent: #7367f0;
  --accent2: #7c4ddb;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-r: env(safe-area-inset-right, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-l: env(safe-area-inset-left, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(var(--bg), var(--bg2));
  background-color: var(--bg);
  color: var(--ink);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: none;
}

#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

#dim {
  position: fixed;
  inset: 0;
  background: #000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 4s ease;
}
#dim.on { opacity: 0.65; }

#ui {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 1;
  transition: opacity 1.2s ease;
}
#ui.idle { opacity: 0.15; }
#ui.hidden { opacity: 0; }
#ui.hidden button { pointer-events: none; }

.bar {
  position: absolute;
  top: calc(var(--safe-t) + 6px);
  display: flex;
  gap: 2px;
}
.top-left { left: calc(var(--safe-l) + 6px); }
.top-right { right: calc(var(--safe-r) + 6px); }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
}
button[hidden] { display: none; }

button svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  opacity: 0.6;
  transition: opacity 0.4s ease;
}
.icon:active { opacity: 0.9; }

.bottom {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(var(--safe-b) + 14px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

#scenes {
  display: flex;
  gap: 2px;
  min-height: 28px;
}
#scenes button {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  opacity: 0;
  animation: fade-in 3s ease forwards;
}
#scenes button::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
  opacity: 0.35;
  transition: all 0.6s ease;
}
#scenes button.on::after {
  width: 9px;
  height: 9px;
  opacity: 0.8;
  box-shadow: 0 0 0 3px rgba(203, 188, 255, 0.18);
}
#scenes[hidden] { display: none; }

#dock {
  display: flex;
  gap: 14px;
}
.mode {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  opacity: 0.6;
  background: rgba(16, 13, 38, 0.6);
  box-shadow: inset 0 0 0 1px rgba(203, 188, 255, 0.10);
  transition: opacity 0.5s ease, background 0.5s ease, box-shadow 0.5s ease;
}
.mode.on {
  opacity: 0.9;
  background: rgba(52, 42, 120, 0.7);
  box-shadow: inset 0 0 0 1.5px rgba(203, 188, 255, 0.45);
}

#ghost {
  position: fixed;
  width: 56px;
  height: 56px;
  pointer-events: none;
  opacity: 0;
  color: var(--ink);
}
#ghost svg {
  width: 56px;
  height: 56px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
#ghost.play { animation: ghost 4.5s ease-in-out 2; }

@keyframes ghost {
  0% { opacity: 0; transform: translate(40px, 50px); }
  25% { opacity: 0.55; transform: translate(0, 0); }
  45% { opacity: 0.55; transform: translate(0, 0) scale(0.9); }
  60% { opacity: 0.55; transform: translate(0, 0); }
  100% { opacity: 0; transform: translate(0, 0); }
}
@keyframes fade-in { to { opacity: 1; } }

#demo {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--safe-t) + 56px) calc(var(--safe-r) + 12px) calc(var(--safe-b) + 16px) calc(var(--safe-l) + 12px);
  background: rgba(5, 4, 14, 0.94);
  animation: fade-in 0.4s ease forwards;
  opacity: 0;
}
#demo[hidden] { display: none; }
#demo video {
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 16px;
  background: #0b0a1a;
  box-shadow: 0 0 0 1px rgba(203, 188, 255, 0.12), 0 12px 48px rgba(0, 0, 0, 0.5);
}
#demo-close {
  position: absolute;
  top: calc(var(--safe-t) + 6px);
  right: calc(var(--safe-r) + 6px);
}
#demo-offline {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--ink);
  opacity: 0.7;
  pointer-events: none;
}
#demo-offline[hidden] { display: none; }
#demo-offline svg { width: 56px; height: 56px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }

@media (prefers-reduced-motion: reduce) {
  #ui, #dim, .mode, .icon { transition-duration: 0.01s; }
  #ghost.play { animation: none; }
}