/* Image to 3D Benchmark: a dark studio. One fixed WebGL canvas paints every live tile; the page is
   a column of findings, a picture strip, then the source picture beside the mesh grid, notes and a sheet. */
@font-face { font-family: 'Instrument Serif'; src: url(fonts/instrument-serif-regular.woff2) format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Instrument Sans'; src: url(fonts/instrument-sans-regular.woff2) format('woff2'); font-weight: 400 700; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url(fonts/IBMPlexMono-normal-400.woff2) format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url(fonts/IBMPlexMono-normal-500.woff2) format('woff2'); font-weight: 500; font-display: swap; }

:root {
  --bg: #0f1214;
  --panel: #171b1e;
  --tile: #2c2c32;          /* same grey as the Blender renders, so posters and live views match */
  --ink: #ece7dc;
  --muted: #a3aaac;
  --hq: #d9a55a;
  --lp: #56c2d6;
  --accent: var(--hq);
  --bad: #e07a6a;
  --line: color-mix(in srgb, var(--ink) 13%, transparent);
  --line-2: color-mix(in srgb, var(--ink) 24%, transparent);
  --serif: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --sans: 'Instrument Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --bar-h: 64px;
  --gutter: clamp(16px, 4vw, 48px);
  --exploration-footer-bg: var(--bg);
  --exploration-footer-ink: var(--ink);
  --exploration-footer-border: var(--line);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { background: var(--bg); }
body { margin: 0; color: var(--ink); font: 15px/1.55 var(--sans); font-synthesis: style; }
body.mode-lp { --accent: var(--lp); }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.num { font-variant-numeric: tabular-nums; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 80; padding: 10px 14px; background: var(--ink); color: var(--bg); border-radius: 4px; }
.skip:focus { top: 12px; }

#gl { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; display: block; }
body.lb-open #gl { z-index: 61; }

/* ---------- header ---------- */
.bar {
  position: sticky; top: 0; z-index: 40; height: var(--bar-h);
  display: flex; align-items: center; gap: 16px; padding-inline: var(--gutter);
  background: color-mix(in srgb, var(--bg) 84%, transparent); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.bar-home { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; text-decoration: none; font: 500 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); white-space: nowrap; flex: none; }
.bar-home:hover { color: var(--ink); }
.bar-title { font: 400 24px/1 var(--serif); padding-left: 16px; border-left: 1px solid var(--line-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.bar-title em { color: var(--accent); }
.bar-switch { margin-left: auto; display: inline-flex; border: 1px solid var(--line-2); border-radius: 999px; padding: 3px; flex: none; }
.bar-switch button { min-height: 36px; padding: 0 14px; border-radius: 999px; font: 500 12px/1 var(--mono); letter-spacing: .06em; color: var(--muted); white-space: nowrap; }
.bar-switch button[data-set="hq"][aria-selected="true"] { background: var(--hq); color: var(--bg); }
.bar-switch button[data-set="lp"][aria-selected="true"] { background: var(--lp); color: var(--bg); }
.bar-cta { flex: none; display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border-radius: 999px; background: var(--ink); color: var(--bg); text-decoration: none; font: 600 13px/1 var(--sans); white-space: nowrap; }
.bar-cta:hover { background: var(--accent); }

main { position: relative; z-index: 1; padding-inline: var(--gutter); padding-block: 40px 80px; max-width: 1480px; margin: 0 auto; }
.eyebrow { font: 500 11px/1.4 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin: 0; }

/* ---------- intro ---------- */
.intro { margin-bottom: 40px; }
.intro h1 { font: 400 clamp(48px, 8vw, 104px)/.95 var(--serif); margin: 14px 0 0; letter-spacing: -.015em; }
.intro h1 em { color: var(--accent); }
.lede { max-width: 66ch; color: var(--muted); font-size: 17px; margin: 18px 0 0; }
.downloads { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.dl { display: grid; gap: 2px; padding: 12px 16px; border: 1px solid var(--line-2); border-radius: 6px; text-decoration: none; min-width: 200px; }
.dl b { font: 600 14px/1.2 var(--sans); }
.dl span { font: 400 12px/1.3 var(--mono); color: var(--muted); }
.dl:hover { border-color: var(--accent); }

.set-head h2 { font: 400 clamp(36px, 5.4vw, 68px)/1 var(--serif); margin: 14px 0 0; text-wrap: balance; letter-spacing: -.01em; }
.set-head h2 em { color: var(--accent); }
.totals { display: flex; flex-wrap: wrap; gap: 8px 28px; margin-top: 22px; font: 400 13px/1.4 var(--mono); color: var(--muted); }
.totals b { color: var(--ink); font-weight: 500; }

.findings { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 36px; }
.finding { background: var(--bg); padding: 18px 20px 20px; min-width: 0; }
.finding h3 { font: 400 22px/1.15 var(--serif); margin: 0 0 8px; text-wrap: balance; }
.finding p { margin: 0; color: var(--muted); font-size: 14px; }

.cats { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; margin-top: 48px; }
.cat { display: grid; gap: 8px; text-align: left; padding: 8px; border: 1px solid var(--line); border-radius: 4px; min-width: 0; }
.cat img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: 2px; display: block; opacity: .8; }
.cat span { font: 500 11px/1.3 var(--mono); letter-spacing: .04em; color: var(--muted); }
.cat strong { display: block; font: 400 17px/1.15 var(--serif); color: var(--ink); margin-top: 2px; letter-spacing: 0; }
.cat:hover { border-color: var(--line-2); }
.cat:hover img, .cat[aria-current="true"] img { opacity: 1; }
.cat[aria-current="true"] { border-color: var(--accent); }

/* ---------- test tabs ---------- */
.modetabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 0 0 36px; }
.modetab { text-align: left; padding: 18px 20px 20px; border: 2px solid var(--line-2); border-radius: 6px; display: grid; gap: 6px; min-width: 0;
  background: var(--panel); transition: border-color .2s, background .2s; position: relative; overflow: hidden; }
.modetab::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; background: var(--c); opacity: .35; }
.modetab[data-set="hq"] { --c: var(--hq); }
.modetab[data-set="lp"] { --c: var(--lp); }
.modetab .mt-k { font: 500 11px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--c); }
.modetab .mt-t { font: 400 clamp(26px, 3.4vw, 38px)/1.02 var(--serif); color: var(--ink); }
.modetab .mt-d { font-size: 14px; color: var(--muted); max-width: 52ch; }
.modetab:hover { border-color: color-mix(in srgb, var(--c) 60%, transparent); }
.modetab[aria-selected="true"] { border-color: var(--c); background: color-mix(in srgb, var(--c) 14%, var(--panel)); }
.modetab[aria-selected="true"]::before { opacity: 1; }
.modetab[aria-selected="true"] .mt-t::after { content: " ●"; color: var(--c); font-size: .5em; vertical-align: middle; }

/* ---------- stage ---------- */
.stage { display: grid; grid-template-columns: minmax(220px, 300px) minmax(0, 1fr); gap: 28px; margin-top: 32px; align-items: start;
  border-top: 4px solid var(--accent); padding-top: 18px; scroll-margin-top: calc(var(--bar-h) + 8px); }
.source { position: sticky; top: calc(var(--bar-h) + 76px); display: grid; gap: 14px; min-width: 0; }
.source figure { margin: 0; }
.source img { width: 100%; height: auto; display: block; border-radius: 3px; }
.source figcaption { font: 400 12px/1.4 var(--mono); color: var(--muted); margin-top: 8px; }
.source h2 { font: 400 32px/1.05 var(--serif); margin: 0; text-wrap: balance; }
.source p { margin: 0; color: var(--muted); font-size: 14px; }

.controls {
  position: sticky; top: var(--bar-h); z-index: 30; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
  padding: 10px 0; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(10px);
}
.seg { display: inline-flex; border: 1px solid var(--line-2); border-radius: 999px; padding: 3px; }
.seg button { min-height: 34px; padding: 0 16px; border-radius: 999px; font: 500 13px/1 var(--sans); color: var(--muted); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.seg button:not([aria-pressed="true"]):hover { color: var(--ink); }
.toggle { display: inline-flex; align-items: center; gap: 8px; font: 400 13px/1 var(--sans); color: var(--muted); min-height: 40px; cursor: pointer; }
.toggle input { accent-color: var(--accent); width: 16px; height: 16px; margin: 0; }
.ghost { font: 500 12px/1 var(--mono); letter-spacing: .06em; color: var(--muted); min-height: 36px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; }
.ghost:hover { color: var(--ink); border-color: var(--line-2); }
.live-btn { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.live-btn:hover { color: var(--bg); filter: brightness(1.08); }
.live-btn small { font: inherit; opacity: .75; }
.live-btn[hidden] { display: none; }
.hint { font: 400 12px/1.3 var(--mono); color: var(--muted); margin-left: auto; }
.setflag { font: 500 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; padding: 7px 10px; border-radius: 3px; background: var(--accent); color: var(--bg); white-space: nowrap; }
.gl-status { flex-basis: 100%; margin: 0; font: 400 12px/1.3 var(--mono); color: var(--muted); min-height: 0; }
.gl-status:empty { display: none; }
.gl-lost { flex-basis: 100%; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; padding: 12px 14px; border: 1px solid var(--bad); border-radius: 4px; background: color-mix(in srgb, var(--bad) 10%, var(--bg)); }
.gl-lost[hidden] { display: none; }
.gl-lost p { margin: 0; font-size: 14px; flex: 1 1 260px; }
.gl-lost .ghost { color: var(--ink); border-color: var(--bad); }

.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.tile { position: relative; aspect-ratio: 1; border-radius: 3px; overflow: hidden; touch-action: pan-y; min-width: 0; background: transparent;
  outline: 1px solid color-mix(in srgb, var(--accent) 22%, transparent); }
.tile.live { cursor: grab; }
.tile.dragging { cursor: grabbing; }
.tile .poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: var(--tile); transition: opacity .35s; }
.tile.live .poster { opacity: 0; }
.t-head { position: absolute; left: 0; right: 0; top: 0; display: flex; align-items: baseline; gap: 8px; padding: 10px 12px; pointer-events: none;
  background: linear-gradient(color-mix(in srgb, var(--bg) 70%, transparent), transparent); }
.t-idx { font: 500 11px/1 var(--mono); color: var(--muted); }
.t-name { font: 600 15px/1.2 var(--sans); min-width: 0; }
.t-open { margin-left: auto; flex: none; pointer-events: auto; font: 500 11px/1 var(--mono); letter-spacing: .06em; color: var(--ink); min-height: 32px; padding: 0 10px; border: 1px solid var(--line-2); border-radius: 999px; background: color-mix(in srgb, var(--bg) 60%, transparent); }
.t-open:hover { border-color: var(--accent); }
.t-foot { position: absolute; left: 0; right: 0; bottom: 0; display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 12px; pointer-events: none;
  background: linear-gradient(transparent, color-mix(in srgb, var(--bg) 75%, transparent)); }
.chip { font: 400 11px/1 var(--mono); padding: 5px 7px; border-radius: 3px; background: color-mix(in srgb, var(--bg) 70%, transparent); color: var(--ink); white-space: nowrap; }
.chip.warn { color: var(--accent); }
.t-status { position: absolute; inset: auto 12px 44px auto; font: 400 11px/1 var(--mono); color: var(--muted); pointer-events: none; }
.tile.failed { display: grid; place-items: center; text-align: center; cursor: default; background: repeating-linear-gradient(135deg, var(--panel) 0 10px, var(--bg) 10px 20px); }
.tile.failed .fail { padding: 24px; max-width: 30ch; }
.tile.failed strong { display: block; font: 400 22px/1.1 var(--serif); color: var(--bad); margin-bottom: 6px; }
.tile.failed span { font-size: 13px; color: var(--muted); }

/* ---------- below the grid ---------- */
.master { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 36px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--line); align-items: start; }
.master[hidden] { display: none; }
.master h2 { font: 400 32px/1.05 var(--serif); margin: 10px 0 12px; }
.master p { margin: 0 0 10px; color: var(--muted); font-size: 14px; max-width: 60ch; }
.master figure { margin: 0; min-width: 0; }
.master img { width: 100%; height: auto; display: block; border-radius: 3px; }
.master figcaption { font: 400 12px/1.4 var(--mono); color: var(--muted); margin-top: 8px; }
.master-stats { display: grid; gap: 6px; margin: 14px 0 0; font: 400 13px/1.3 var(--mono); }
.master-stats div { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.master-stats dt { color: var(--muted); }
.master-stats dd { margin: 0; }

.below { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 36px; margin-top: 40px; }
.notes h3, .sheet h3, .method h3 { font: 500 11px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.notes ul { margin: 0; padding-left: 18px; display: grid; gap: 10px; }
.notes li { max-width: 62ch; }
.sheet { min-width: 0; }
.sheet-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font: 400 12.5px/1.3 var(--mono); font-variant-numeric: tabular-nums; }
th, td { text-align: right; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
th { font-weight: 500; color: var(--muted); font-size: 11px; letter-spacing: .04em; }
td.dim { color: var(--muted); }
td.flag { color: var(--accent); }

.method { margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.method p { margin: 0 0 10px; color: var(--muted); font-size: 14px; max-width: 60ch; }
.method dl { margin: 0; display: grid; gap: 8px; font-size: 13px; }
.method dt { font-weight: 600; }
.method dd { margin: 0; color: var(--muted); }

.cta { margin-top: 64px; padding: 36px clamp(20px, 4vw, 48px); border: 1px solid var(--line-2); border-radius: 8px; background: var(--panel); }
.cta h2 { font: 400 clamp(32px, 4.6vw, 56px)/1 var(--serif); margin: 0; }
.cta h2 em { color: var(--accent); }
.cta p { color: var(--muted); max-width: 62ch; margin: 14px 0 0; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.button { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 20px; border-radius: 999px; border: 1px solid var(--line-2); text-decoration: none; font: 600 14px/1 var(--sans); }
.button:hover { border-color: var(--accent); }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.button.primary:hover { filter: brightness(1.08); }

/* ---------- footer ---------- */
.site-foot { position: relative; z-index: 1; border-top: 1px solid var(--line); background: var(--bg); }
.foot-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding: 18px var(--gutter); max-width: 1480px; margin: 0 auto; font: 400 12px/1.4 var(--mono); color: var(--muted); }
.foot-name { text-transform: uppercase; letter-spacing: .14em; color: var(--ink); margin-right: auto; }
.foot-row a { min-height: 32px; display: inline-flex; align-items: center; }
.foot-row a:hover { color: var(--ink); }
.site-foot [data-exploration-controls] { border-top: 0; background: none; }

/* ---------- lightbox ---------- */
.lb { position: fixed; inset: 0; z-index: 60; display: grid; grid-template-columns: minmax(0, 1fr) 320px; background: var(--bg); }
.lb[hidden] { display: none; }
.lb-stage { position: relative; margin: 20px; touch-action: none; cursor: grab; min-width: 0; }
.lb-loading { position: absolute; inset: 0; display: grid; place-items: center; margin: 0; font: 400 13px/1 var(--mono); color: var(--muted); }
.lb-loading[hidden] { display: none; }
.lb-side { position: relative; z-index: 62; border-left: 1px solid var(--line); padding: 22px; overflow-y: auto; display: grid; grid-template-columns: minmax(0, 1fr); align-content: start; gap: 16px; background: var(--bg); }
.lb-side h2 { font: 400 34px/1 var(--serif); margin: 0; }
.lb-side .seg { justify-self: start; }
.lb-nav { display: flex; flex-wrap: wrap; gap: 8px; }
.lb-stats { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font: 400 12.5px/1.35 var(--mono); margin: 0; }
.lb-stats dt { color: var(--muted); }
.lb-stats dd { margin: 0; text-align: right; }
.lb-note { font-size: 13px; color: var(--muted); margin: 0; }
.lb-close { justify-self: end; }

@media (max-width: 1100px) {
  .findings { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stage { grid-template-columns: minmax(0, 1fr); }
  .source { position: static; grid-template-columns: 160px minmax(0, 1fr); align-items: start; }
  .below, .method, .master { grid-template-columns: minmax(0, 1fr); }
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bar-title { display: none; }
}
@media (max-width: 640px) {
  :root { --bar-h: 56px; }
  .bar { gap: 10px; }
  .bar-home .long { display: none; }
  .bar-switch button { padding: 0 10px; }
  .bar-cta { padding: 0 12px; }
  .findings { grid-template-columns: minmax(0, 1fr); }
  .cats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .source { grid-template-columns: minmax(0, 1fr); }
  .source figure { max-width: 260px; }
  .grid { grid-template-columns: minmax(0, 1fr); }
  .modetabs { grid-template-columns: minmax(0, 1fr); }
  .hint { display: none; }
  .controls { position: static; }
  .lb { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) auto; }
  .lb-side { border-left: 0; border-top: 1px solid var(--line); max-height: 46vh; }
}
@media (max-width: 380px) {
  .bar-switch button { padding: 0 8px; letter-spacing: 0; }
  .bar-cta { font-size: 12px; padding: 0 10px; }
}
@media (max-height: 500px) {
  .controls { position: static; }
  .lb { grid-template-columns: minmax(0, 1fr) 260px; grid-template-rows: none; }
  .lb-side { border-top: 0; border-left: 1px solid var(--line); max-height: none; padding: 14px; gap: 10px; }
  .lb-side .seg button { padding: 0 10px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }