:root {
  color-scheme: dark;
  --ink: rgba(247, 249, 247, .94);
  --muted: rgba(237, 242, 238, .6);
  --line: rgba(255, 255, 255, .13);
  --glass: rgba(8, 11, 13, .58);
  --glass-strong: rgba(8, 11, 13, .78);
  --ease: cubic-bezier(.2, .72, .18, 1);
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body {
  background: #080b0d;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, select { font: inherit; color: inherit; }
button:focus-visible, select:focus-visible { outline: 2px solid rgba(255, 255, 255, .88); outline-offset: 3px; }

#stage, #worldSlot, #referenceBackdrop, #transitionVeil {
  position: fixed;
  inset: 0;
}

#referenceBackdrop {
  background: #080b0d center / cover no-repeat;
  opacity: 0;
  transform: scale(1.01);
  transition: opacity .7s var(--ease);
}
#referenceBackdrop.hasImage { opacity: 1; }
#referenceBackdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(3, 5, 6, .06), rgba(3, 5, 6, .2));
}

#worldSlot { z-index: 1; }
.worldFrame {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
  opacity: 0;
  background: transparent;
  transition: none;
  pointer-events: none;
}
.worldFrame.ready { opacity: 1; }

#transitionVeil {
  z-index: 8;
  pointer-events: none;
  background: rgba(5, 7, 8, .12);
  opacity: 0;
  transition: opacity .42s var(--ease);
}
#transitionVeil.covering { opacity: 1; }

#worldStatus {
  position: fixed;
  z-index: 12;
  left: 50%;
  bottom: max(92px, calc(env(safe-area-inset-bottom) + 74px));
  transform: translate(-50%, 8px);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0;
  transition: opacity .3s, transform .3s var(--ease);
  pointer-events: none;
  text-shadow: 0 2px 20px rgba(0, 0, 0, .55);
}
#worldStatus.visible { opacity: 1; transform: translate(-50%, 0); }

.chrome {
  position: fixed;
  z-index: 20;
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(118%);
  -webkit-backdrop-filter: blur(18px) saturate(118%);
  box-shadow: 0 12px 44px rgba(0, 0, 0, .17);
  transition: opacity .55s var(--ease), transform .55s var(--ease), visibility .55s;
}
body.chromeHidden .chrome {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#worldSwitcher {
  top: max(18px, calc(env(safe-area-inset-top) + 10px));
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 8px;
  border-radius: 999px;
}
body.chromeHidden #worldSwitcher { transform: translate(-50%, -8px); }
#worldSwitcher { max-width: calc(100vw - 24px); }
#worldSelect { width: 132px; min-width: 0; height: 40px; padding: 0 12px; border: 0; border-radius: 999px; background: transparent; font-size: 13px; cursor: pointer; }
#worldSelect:hover { background: rgba(255,255,255,.07); }
#worldSelect option { background: #182022; color: #f7f9f7; }

#playerControls {
  left: 50%;
  bottom: max(22px, calc(env(safe-area-inset-bottom) + 14px));
  transform: translateX(-50%);
  gap: 4px;
  padding: 5px;
  border-radius: 999px;
  background: var(--glass-strong);
}
body.chromeHidden #playerControls { transform: translate(-50%, 8px); }
.iconButton {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  opacity: .72;
  transition: opacity .2s, background .2s;
}
.iconButton:hover { opacity: 1; background: rgba(255, 255, 255, .09); }
.iconButton:disabled { opacity: .22; cursor: default; }
.iconButton svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.playIcon, .soundOnIcon { display: none; }
#playPause.paused .playIcon { display: block; }
#playPause.paused .pauseIcon { display: none; }
#sound.soundEnabled .soundOnIcon { display: block; }
#sound.soundEnabled .soundOffIcon { display: none; }

@media (max-width: 620px) {
  #worldSwitcher { width: auto; }
  #playerControls { bottom: max(16px, calc(env(safe-area-inset-bottom) + 8px)); }
  #worldStatus { bottom: max(82px, calc(env(safe-area-inset-bottom) + 70px)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation: none !important; }
}

#frozenScene{position:fixed;inset:0;width:100%;height:100%;object-fit:cover;z-index:5;pointer-events:none;opacity:0;transition:opacity .35s var(--ease)}
#frozenScene.holding{opacity:1;transition-duration:0s!important}
.sceneButton{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;background:var(--ink);color:#111719;padding:0;cursor:pointer;box-shadow:0 5px 18px rgba(0,0,0,.2);transition:background .2s,transform .2s,box-shadow .2s}
.sceneButton:hover{background:#fff;transform:translateY(-1px);box-shadow:0 7px 22px rgba(0,0,0,.26)}
.sceneButton:active{transform:translateY(0)}
.sceneButton:disabled{opacity:.25;cursor:default;transform:none;box-shadow:none}
.sceneButton svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:360px){.iconButton{width:32px}#playerControls{gap:3px}}

#loadingNotice { position: fixed; z-index: 15; left: 50%; bottom: max(100px, calc(env(safe-area-inset-bottom) + 82px)); transform: translateX(-50%); display: flex; align-items: center; gap: 10px; width: max-content; max-width: calc(100vw - 40px); padding: 12px 16px; border-radius: 14px; background: var(--glass-strong); color: var(--ink); font-size: 12px; line-height: 1.5; }
#loadingNotice[hidden], #retryWorld[hidden] { display: none; }
#loadingText { word-break: keep-all; }
.loadingPulse { width: 6px; height: 6px; flex: 0 0 6px; border-radius: 50%; background: #d7e6df; animation: breathing 1.6s ease-in-out infinite; }
#loadingNotice.failed .loadingPulse { display: none; }
#retryWorld { flex-shrink: 0; min-height: 40px; border: 1px solid var(--line); background: rgba(255,255,255,.1); border-radius: 8px; padding: 0 10px; cursor: pointer; }
@keyframes breathing { 50% { opacity: .35; transform: scale(.75); } }