@font-face{font-family:"Inter Variable";font-style:normal;font-display:swap;font-weight:100 900;src:url("fonts/inter-latin-opsz-normal.woff2") format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{
  color-scheme:light;
  --background:#fbfbf9;--surface:#ffffff;--surface-soft:#f6f5f1;
  --border:#e3e1dc;--border-soft:#eeece7;
  --ink:#1d1d1b;--muted:#77756d;
  --ring:#315c4b;--accent-soft:#e1ebe5;
  --radius:8px;
  --stage:#111110;
  --sans:"Inter Variable",Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular","SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  font-family:var(--sans);font-size:14px;font-weight:450;line-height:1.5;color:var(--ink);background:var(--background);
  font-synthesis:none;font-feature-settings:"cpsp","cv01","cv02","cv11";text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
*{box-sizing:border-box}
body{margin:0;min-height:100svh;min-width:320px}
button,input{font:inherit;color:inherit}
button,a,input{-webkit-tap-highlight-color:transparent}
button{cursor:pointer;border:0;background:none;padding:0;margin:0}
button:disabled,input:disabled{cursor:wait}
a{color:inherit;text-decoration-color:color-mix(in srgb,currentColor 24%,transparent);text-underline-offset:3px}
a:hover{text-decoration-color:currentColor}
h1,h2,p{margin:0}
:focus-visible{outline:2px solid var(--ring);outline-offset:2px;border-radius:4px}

/* ---- Shell ------------------------------------------------------------ */
.app{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  grid-template-rows:auto minmax(0,1fr);
  grid-template-areas:"top rail" "viewer rail";
  height:100svh;
  padding:0 0 24px 28px;column-gap:28px;
}
.top{grid-area:top;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 0 14px;width:var(--stage-w,100%);max-width:100%;margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Time of day: patternmode segmented control */
#lighting{display:flex;gap:2px;border-radius:999px;border:1px solid var(--border-soft);background:var(--surface-soft);padding:2px}
.light{min-height:26px;border-radius:999px;padding:0 10px;font-size:14px;line-height:1;color:var(--muted);transition:background .14s,color .14s}
.light:hover:not(:disabled){color:var(--ink)}
.light[aria-pressed=true]{background:var(--ink);color:#fff}
.light:disabled{opacity:.4;cursor:not-allowed}

.viewer-actions{display:flex;align-items:center;gap:6px}
#colour-story,#restart{min-height:30px;padding:0 12px;border-radius:7px;font-size:14px;line-height:1;border:1px solid var(--border);background:transparent;color:var(--ink);transition:background .14s,border-color .14s,color .14s}
#colour-story:hover:not(:disabled),#restart:hover:not(:disabled){background:var(--surface-soft)}
#colour-story{border-color:var(--ink);background:var(--ink);color:#fff}
#colour-story:hover:not(:disabled){background:#2f2f2c}
#colour-story[aria-pressed=true]{background:transparent;color:var(--ink);border-color:var(--border)}
#colour-story:disabled,#restart:disabled{opacity:.4;cursor:default}

/* ---- Viewer ----------------------------------------------------------- */
.viewer{grid-area:viewer;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto;align-content:start;gap:14px;min-height:0;min-width:0}
.stage-wrap{display:flex;justify-content:center;min-height:0;min-width:0}
.stage{position:relative;height:100%;max-width:100%;aspect-ratio:3/2;flex:none;background:var(--stage);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border-soft);box-shadow:0 12px 32px rgba(29,29,27,.08)}
canvas{display:block;width:100%;height:100%;object-fit:contain}
#loading,#error{position:absolute;inset:0;display:grid;place-items:center;padding:30px;text-align:center;font-size:14px;color:#fff}
#loading{background:var(--stage) url("scenes/morning-arrival.png") center/cover}
#loading span{position:relative;padding:8px 14px;border-radius:999px;background:rgba(17,17,16,.7);backdrop-filter:blur(8px)}
#loading::before{content:"";position:absolute;inset:0;background:rgba(17,17,16,.5);backdrop-filter:blur(18px) saturate(.9)}
#loading[hidden],#error[hidden]{display:none}
#error{background:rgba(17,17,16,.94);color:#f3cdbd}
.overlay{position:absolute;left:0;right:0;bottom:0;padding:64px 20px 14px;display:flex;flex-direction:column;gap:8px;background:linear-gradient(to top,rgba(10,10,9,.72) 0%,rgba(10,10,9,.42) 45%,rgba(10,10,9,0) 100%)}
.caption{pointer-events:none;display:flex;flex-direction:column;gap:2px;text-shadow:0 1px 8px rgba(0,0,0,.5);color:#fff}
#scene-label{font-size:14px;font-weight:500;line-height:1.25}
.status{font-size:14px;color:rgba(255,255,255,.72);min-height:21px;line-height:21px}
.status:empty::before{content:"\00a0"}
#switching{position:absolute;right:14px;top:14px;padding:6px 11px;border-radius:999px;background:rgba(17,17,16,.7);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.12);font-size:14px;color:#fff}
#switching[hidden]{display:none}

/* Transport */
.transport{display:flex;align-items:center;gap:14px}
#play{width:40px;height:40px;border-radius:50%;background:#fff;color:var(--ink);display:grid;place-items:center;flex-shrink:0;transition:transform .14s var(--ease),opacity .2s;box-shadow:0 1px 2px rgba(17,24,39,.1)}
#play:hover:not(:disabled){transform:scale(1.04)}
#play:active:not(:disabled){transform:scale(.96)}
#play:disabled{opacity:.4}
#play svg{width:14px;height:14px;fill:currentColor}
#play .icon-pause{display:none}
#play[data-state=pause] .icon-play{display:none}
#play[data-state=pause] .icon-pause{display:block}
#play .icon-play{transform:translateX(1px)}
.scrubber{position:relative;flex:1;min-width:40px;height:40px;display:flex;align-items:center}
.scrubber input{--p:0%;appearance:none;-webkit-appearance:none;display:block;width:100%;height:20px;margin:0;background:transparent;cursor:pointer}
.scrubber input::-webkit-slider-runnable-track{height:2px;border-radius:2px;background:linear-gradient(to right,#fff var(--p),rgba(255,255,255,.3) var(--p))}
.scrubber input::-moz-range-track{height:2px;border-radius:2px;background:rgba(255,255,255,.3)}
.scrubber input::-moz-range-progress{height:2px;background:#fff}
.scrubber input::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:12px;height:12px;margin-top:-5px;border-radius:50%;background:#fff;box-shadow:0 0 0 3px rgba(10,10,9,.35);transition:transform .14s var(--ease)}
.scrubber input::-moz-range-thumb{width:12px;height:12px;border:0;border-radius:50%;background:#fff;box-shadow:0 0 0 3px rgba(10,10,9,.35)}
.scrubber input:hover::-webkit-slider-thumb{transform:scale(1.15)}
.scrubber input:disabled{opacity:.4}
#ticks{position:absolute;left:6px;right:6px;top:50%;height:0;pointer-events:none}
#ticks i{position:absolute;top:-4px;width:1px;height:8px;background:rgba(255,255,255,.55);transform:translateX(-.5px)}
#time{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:12px;color:rgba(255,255,255,.85);white-space:nowrap;min-width:78px;text-align:right}

/* Scene filmstrip */
#scenes{display:flex;gap:10px;width:var(--stage-w,100%);max-width:100%;margin:0 auto}
.scene{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:7px;text-align:left;color:var(--muted);border-radius:6px;transition:color .14s}
.scene:hover:not(:disabled){color:var(--ink)}
.scene:disabled{cursor:default;opacity:.5}
.scene img{display:block;width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:6px;box-shadow:0 0 0 1px var(--border-soft);transition:box-shadow .14s}
.scene[aria-current=location]{color:var(--ink)}
.scene[aria-current=location] img{box-shadow:0 0 0 2px var(--surface),0 0 0 4px var(--ring)}
.scene-text{display:flex;gap:7px;align-items:baseline;font-size:14px;line-height:1.25;min-width:0}
.scene-number{font-family:var(--mono);font-size:11px;color:var(--muted)}
.scene[aria-current=location] .scene-text{font-weight:500}
.scene-text span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---- Rail ------------------------------------------------------------- */
.rail{grid-area:rail;background:var(--surface);border-left:1px solid var(--border-soft);padding:24px 24px 24px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;min-height:0;scrollbar-width:thin;scrollbar-color:var(--border) transparent}
.rail h2{font-size:14px;font-weight:500;line-height:1.25}
.rail-head{display:flex;justify-content:space-between;align-items:baseline}
#reset{font-size:14px;color:var(--muted);transition:color .14s}
#reset:hover:not(:disabled){color:var(--ink)}
#reset:disabled{opacity:.4;cursor:default}

#surfaces{display:flex;flex-direction:column;margin-top:-8px}
.surface{border-top:1px solid var(--border-soft);position:relative}
.surface:first-child{border-top:0}
.surface-toggle{display:grid;grid-template-columns:44px minmax(0,1fr) auto;column-gap:12px;align-items:center;width:100%;padding:11px 0;text-align:left;border-radius:6px}
.swatch{width:44px;height:44px;border-radius:7px;box-shadow:0 1px 2px rgba(17,24,39,.1),inset 0 0 0 1px rgba(29,29,27,.06);transition:background-color .65s var(--ease)}
.paint-text{min-width:0;display:flex;flex-direction:column;gap:1px}
.surface-label{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:6px;line-height:1.3}
.surface.in-view .surface-label::after{content:"In view";font-size:11px;line-height:1;color:var(--ring);padding:3px 6px;border-radius:999px;background:var(--accent-soft)}
.paint-name{font-size:14px;font-weight:500;line-height:1.3;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.paint-number{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;line-height:1.3}
.chevron{width:16px;height:16px;color:var(--muted);transition:transform .2s var(--ease),color .14s}
.surface-toggle:hover .chevron{color:var(--ink)}
.surface-toggle[aria-expanded=true] .chevron{transform:rotate(180deg)}
.chips-wrap{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s var(--ease)}
.surface-toggle[aria-expanded=true]+.chips-wrap{grid-template-rows:1fr}
.chips-inner{overflow:hidden;min-height:0;visibility:hidden;transition:visibility .24s}
.surface-toggle[aria-expanded=true]+.chips-wrap .chips-inner{visibility:visible}
.chips{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;padding:4px 4px 8px;margin:0 -4px}
.chip{aspect-ratio:1;border-radius:7px;box-shadow:0 1px 2px rgba(17,24,39,.1);position:relative;transition:transform .14s ease,box-shadow .14s ease}
.chip:hover{transform:scale(1.06);z-index:1}
.chip[aria-checked=true]{box-shadow:0 1px 2px rgba(17,24,39,.1),0 0 0 2px var(--surface),0 0 0 4px var(--ring)}
.chip-name{font-size:12px;color:var(--muted);min-height:18px;line-height:18px;padding-bottom:12px;font-variant-numeric:tabular-nums}
.chip-name:empty::before{content:"\00a0"}

.schemes{display:flex;flex-direction:column;gap:10px}
#presets{display:flex;flex-direction:column;gap:2px}
.preset{display:flex;align-items:center;gap:12px;text-align:left;padding:6px 8px 6px 6px;border-radius:7px;color:var(--ink);font-size:14px;transition:background .14s}
.preset:hover{background:var(--surface-soft)}
.preset[aria-pressed=true]{background:var(--accent-soft);font-weight:500}
.stripes{display:flex;width:80px;height:24px;flex-shrink:0;border-radius:5px;overflow:hidden;box-shadow:0 1px 2px rgba(17,24,39,.1)}
.stripes i{flex:1}

/* ---- Responsive ------------------------------------------------------- */
@media(max-width:1180px){
  .app{grid-template-columns:minmax(0,1fr) 300px;column-gap:22px;padding-left:22px}
  .rail{padding:22px 20px}
}
@media(max-width:920px){
  .app{display:flex;flex-direction:column;height:auto;padding:0;gap:0}
  .stage-wrap{display:block}
  .stage{height:auto;width:100%}
  .top{padding:18px 18px 12px;flex-wrap:wrap;gap:10px;width:auto;margin:0}
  .viewer{padding:0 18px;gap:12px}
  .overlay{padding:44px 12px 10px;gap:4px}
  .transport{gap:10px}
  #play{width:36px;height:36px}
  #time{min-width:70px}
  #scenes{display:flex;overflow-x:auto;gap:10px;width:auto;max-width:none;margin:0 -18px;padding:4px 18px 6px;scroll-snap-type:x proximity;scroll-padding-inline:18px;scrollbar-width:none}
  #scenes::-webkit-scrollbar{display:none}
  .scene{flex:0 0 124px;scroll-snap-align:start}
  .rail{border-left:0;border-top:1px solid var(--border-soft);margin-top:18px;padding:22px 18px 32px;overflow:visible}
}
@media(max-width:480px){
  .light{padding:0 9px}
  #colour-story,#restart{padding:0 10px}
}
@media(pointer:coarse){input{font-size:16px}}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms!important;animation:none!important}
}