:root {
  --t-bg-deep: #13141c;
  --t-bg: #1a1b26;
  --t-surface: #1f2230;
  --t-surface-2: #24283b;
  --t-border-subtle: #24283b;
  --t-border-strong: #414868;
  --t-text: #c0caf5;
  --t-text-secondary: #a9b1d6;
  --t-text-muted: #8b93b8;
  --t-brand: #9ece6a;
  --t-brand-ink: #0c0e10;
  --t-field-bg: #0e0e14;
  --t-elev: 0 0 0 1px oklch(1 0 0 / 0.07);
  --left: #f7768e;
  --right: #7aa2f7;
  color-scheme: dark;
}

html, body { margin: 0; height: 100%; overflow: hidden; background: var(--t-bg-deep); }
* { box-sizing: border-box; }
a { color: inherit; text-decoration: underline; text-decoration-color: var(--t-border-strong); text-underline-offset: 3px; }
a:hover { color: var(--t-brand); text-decoration-color: var(--t-brand); }
button { all: unset; box-sizing: border-box; cursor: pointer; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--t-brand); outline-offset: 2px; }

#game {
  position: fixed; inset: 0; overflow: hidden;
  background: var(--t-bg-deep); color: var(--t-text);
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 14px; line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}
#stage { position: absolute; inset: 0; }
#ui { position: absolute; inset: 0; pointer-events: none; }
#ui > * { pointer-events: auto; }
#ui > .lobby, #ui > .play-controls { pointer-events: none; }

h1, h2 { font-family: Geist, sans-serif; font-weight: 600; margin: 0; }

/* lobby: top bar */
.bar {
  pointer-events: auto; position: absolute; top: 0; left: 0; right: 0; min-height: 36px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 10px;
  font-size: 13px; background: color-mix(in oklch, var(--t-bg) 88%, transparent);
  border-bottom: 1px solid var(--t-border-subtle);
}
.bar-group { display: flex; align-items: center; gap: 6px; }
.slash { font-family: Geist, sans-serif; font-size: 20px; font-weight: 700; line-height: 1; padding: 0 8px 0 4px; color: var(--t-brand); }
.diff { min-width: 24px; height: 24px; display: grid; place-items: center; font-weight: 600; color: var(--t-text-secondary); }
.diff.on { background: var(--t-brand); color: var(--t-brand-ink); }
.diff-label { padding-left: 8px; color: var(--t-text-secondary); }
.world { gap: 4px; }
.step { padding: 4px 8px; color: var(--t-text-muted); }
.step:hover { color: var(--t-brand); }
.world-name { min-width: 150px; text-align: center; font-weight: 600; color: var(--t-text); }
.kbd { font-size: 11px; padding: 1px 6px; background: var(--t-surface-2); color: var(--t-text-muted); }
.world .kbd { margin-left: 6px; }
.toggles { gap: 14px; }
.toggle { color: var(--t-text-muted); }
.toggle.on { color: var(--t-brand); }
.toggle:hover { color: var(--t-text); }
.vr-status { color: var(--t-text-muted); }
.vr-status.on { color: var(--t-brand); }

/* lobby: launcher */
.launcher {
  pointer-events: auto; position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%);
  width: min(600px, calc(100vw - 24px)); display: flex; flex-direction: column;
  background: color-mix(in oklch, var(--t-bg) 94%, transparent);
  box-shadow: 0 0 0 2px var(--t-brand), 0 0 40px -8px var(--t-brand);
}
.launcher-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 14px 16px 10px; }
.tagline { font-size: 20px; letter-spacing: -0.01em; color: var(--t-text); }
.typed { color: var(--t-brand); }
.caret { display: inline-block; width: 0.1em; height: 1em; margin-left: 0.1em; vertical-align: -0.16em; background: var(--t-brand); }
.caret.blink { animation: typed-blink 1.06s step-end infinite; }
@keyframes typed-blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }
.radio-link { flex: none; font-size: 12px; color: var(--t-text-muted); }
.search { display: flex; align-items: center; gap: 10px; padding: 0 16px 10px; border-bottom: 1px solid var(--t-border-subtle); }
.search .prompt { color: var(--t-brand); }
.search input { all: unset; flex: 1; min-width: 0; font-size: 15px; padding: 6px 0; color: var(--t-text); }
.search input::placeholder { color: var(--t-text-muted); }
.search .count { font-size: 11px; color: var(--t-text-muted); }
.tracks { max-height: min(28vh, 260px); overflow: auto; padding: 4px 0; }
.track {
  width: 100%; height: 34px; display: grid; grid-template-columns: 14px minmax(0, 1fr) auto;
  gap: 10px; align-items: center; padding: 0 16px;
}
.track:hover { background: var(--t-surface); }
.track.on { background: var(--t-surface-2); }
.track .mark { color: var(--t-brand); }
.track .title { min-width: 0; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--t-text); }
.track.on .title { color: var(--t-brand); }
.track .artist { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--t-text-muted); }
.explicit { font-size: 10px; letter-spacing: 0.06em; padding: 1px 5px; box-shadow: inset 0 0 0 1px var(--t-border-strong); }
.empty { height: 34px; display: flex; align-items: center; padding: 0 16px 0 40px; font-size: 13px; color: var(--t-text-muted); }
.progress { height: 2px; background: var(--t-surface-2); }
.progress > div { height: 100%; background: var(--t-brand); transition: width 120ms linear; }
.launcher-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 16px 12px; }
.status { display: flex; flex-direction: column; gap: 2px; min-width: 0; font-size: 12px; color: var(--t-text-secondary); }
.status .keys { color: var(--t-text-muted); }
.actions { display: flex; gap: 8px; }
.err { padding: 0 16px 12px; font-size: 12px; color: var(--left); }

/* buttons */
.btn { padding: 9px 16px; font-size: 13px; font-weight: 600; text-align: center; }
.btn.primary { background: var(--t-brand); color: var(--t-brand-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.secondary { color: var(--t-text); background: var(--t-surface-2); box-shadow: inset 0 0 0 1px var(--t-border-strong); }
.btn.secondary:hover { box-shadow: inset 0 0 0 1px var(--t-brand); }
.btn.grow { flex: 1 1 120px; padding: 11px 16px; font-size: 14px; }
.btn.wide { min-width: 140px; padding: 11px 18px; font-size: 14px; }
.link { color: var(--t-text); text-decoration: underline; text-underline-offset: 3px; }

/* in-play controls */
.play-controls { position: absolute; top: 16px; left: 16px; display: flex; gap: 8px; }
.play-controls > * { pointer-events: auto; }
.chip {
  display: flex; align-items: center; gap: 8px; padding: 6px 10px;
  font-size: 12px; color: var(--t-text-muted); background: var(--t-bg); box-shadow: var(--t-elev);
}
.chip:hover { color: var(--t-text); box-shadow: inset 0 0 0 1px var(--t-brand); }
.chip .kbd { font-size: 12px; color: var(--t-text); }
.card-keys { font-size: 12px; color: var(--t-text-muted); }

/* pause and vr overlays */
.overlay { position: absolute; inset: 0; display: grid; place-items: center; }
.overlay.blur { background: color-mix(in oklch, var(--t-bg-deep) 70%, transparent); backdrop-filter: blur(4px); }
.overlay.dim { background: color-mix(in oklch, var(--t-bg-deep) 80%, transparent); }
.card { width: min(380px, calc(100vw - 32px)); background: var(--t-surface); box-shadow: var(--t-elev); padding: 28px; display: flex; flex-direction: column; gap: 18px; }
.card.wide { width: min(420px, calc(100vw - 32px)); gap: 16px; }
.card h2 { font-size: 22px; color: var(--t-text); }
.card .sub { margin: 6px 0 0; font-size: 13px; color: var(--t-text-muted); }
.card .body { margin: 0; font-size: 14px; line-height: 1.6; color: var(--t-text-secondary); }
.card .btn.secondary { padding: 11px 16px; font-size: 14px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; }
.row.center { justify-content: center; }

/* results */
.results { position: absolute; inset: 0; background: var(--t-field-bg); }
.results canvas { position: absolute; left: 0; top: 0; width: 100%; height: calc(100% - 120px); display: block; }
.res-fallback {
  position: absolute; left: 0; right: 0; top: 0; bottom: 120px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px; padding: 24px; text-align: center;
}
.res-head { font-size: 13px; color: var(--t-text-muted); }
.res-score { font-family: Geist, sans-serif; font-size: 56px; font-weight: 600; color: var(--t-brand); }
.res-line { font-size: 13px; color: var(--t-text-secondary); }
.res-actions {
  position: absolute; left: 0; right: 0; bottom: 0; height: 120px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px; padding: 0 16px;
}
.auto { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--t-text-muted); }

.boot-err { position: absolute; inset: 0; display: grid; place-items: center; padding: 24px; text-align: center; color: var(--t-text-secondary); }

/* the theme switch: the old frame splits open from the middle */
@property --theme-wipe { syntax: '<length-percentage>'; inherits: false; initial-value: 0px; }
::view-transition-group(root), ::view-transition-image-pair(root), ::view-transition-new(root) { animation: none; }
::view-transition-old(root) {
  z-index: 1; animation: theme-split-wipe 200ms cubic-bezier(0.7, 0, 1, 1) both;
  mask-image: linear-gradient(100deg, #000 0, #000 calc(50% - var(--theme-wipe) + 1px), #0000 calc(50% - var(--theme-wipe) + 1px), #0000 calc(50% + var(--theme-wipe) - 1px), #000 calc(50% + var(--theme-wipe) - 1px), #000 100%);
  mask-size: 100% 100%; mask-repeat: no-repeat;
}
@keyframes theme-split-wipe { from { --theme-wipe: 0px; } to { --theme-wipe: 80%; } }
@media (prefers-reduced-motion: reduce) { ::view-transition-old(root) { animation: none; } }

@media (max-width: 720px) {
  .bar { flex-wrap: wrap; justify-content: center; row-gap: 2px; padding: 4px 10px; }
  .world-name { min-width: 0; }
  .diff-label, .world .kbd, .launcher-foot .keys { display: none; }
  .launcher { bottom: 12px; }
  .launcher-head { flex-direction: column; gap: 4px; }
  .tracks { max-height: min(24vh, 220px); }
  .res-actions { height: auto; bottom: 16px; }
  .btn.wide { min-width: 0; flex: 1 1 100px; }
}