/* H3 Editor project site. The tokens are the editor's own (editor/editor.css). */
:root {
  --room: #1b1e23;
  --panel: #22262c;
  --raised: #2d3239;
  --hover: #363c44;
  --line: #3b424b;
  --text: #ece8df;
  --muted: #a9b0b8;
  --tungsten: #e0a24a;
  --tungsten-hi: #e8b062;
  --tungsten-ink: #1f1a10;
  --live: #57bdb0;
  --screen: #000;
  --radius: 6px;
  --gutter: clamp(16px, 4vw, 40px);
  --max: 1280px;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
  color-scheme: dark;
  accent-color: var(--tungsten);
  scrollbar-color: var(--line) var(--room);
}

* { box-sizing: border-box; }
html { scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  background: var(--room);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
::selection { background: rgba(224, 162, 74, 0.38); color: var(--text); }
:focus-visible { outline: 2px solid var(--tungsten); outline-offset: 2px; border-radius: 3px; }
::-webkit-scrollbar { width: 12px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line); border: 3px solid transparent; border-radius: 10px; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background-color: #4b535d; }
::-webkit-scrollbar-track, ::-webkit-scrollbar-corner { background: transparent; }

a { color: var(--text); text-decoration-color: rgba(169, 176, 184, 0.55); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--text); }
code { font: 0.9em/1.45 var(--mono); font-variant-ligatures: none; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
img, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; }
.icon { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.icon.fill { fill: currentColor; stroke: none; }
.wrap { width: min(100%, var(--max) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.nowrap { white-space: nowrap; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 20; padding: 8px 14px; border-radius: var(--radius); background: var(--tungsten); color: var(--tungsten-ink); font-weight: 600; text-decoration: none; }
.skip:focus { top: 10px; }

/* Buttons, as in the editor */
.primary, .quiet {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 38px; padding: 8px 16px; border-radius: var(--radius);
  text-decoration: none; white-space: nowrap; transition: background-color 0.12s ease-out;
}
.primary { background: var(--tungsten); color: var(--tungsten-ink); font-weight: 600; }
.primary:hover { background: var(--tungsten-hi); }
.quiet { background: var(--raised); color: var(--text); }
.quiet:hover { background: var(--hover); }

/* Top bar */
.bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 10px;
  height: 60px; padding: 0 var(--gutter);
  background: var(--panel); border-bottom: 1px solid var(--line);
}
.mark { display: inline-flex; align-items: center; gap: 10px; margin-right: 18px; color: var(--text); font-weight: 650; font-size: 17px; text-decoration: none; }
.mark svg { width: 22px; height: 22px; fill: var(--tungsten); }
.links { display: flex; gap: 4px; }
.links a { padding: 8px 12px; border-radius: var(--radius); color: var(--muted); text-decoration: none; }
.links a:hover { color: var(--text); background: var(--raised); }
.spacer { flex: 1; }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 12px 48px; padding-top: clamp(24px, 4vh, 44px); padding-bottom: 20px; }
h1 { grid-column: 1 / -1; font-size: clamp(30px, 3.3vw, 46px); line-height: 1.1; font-weight: 650; letter-spacing: -0.015em; }
.lede { max-width: 62ch; color: var(--muted); font-size: clamp(16px, 1.3vw, 18px); }
.cmd {
  display: flex; align-items: center; gap: 12px; min-width: 0;
  padding: 6px 6px 6px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel);
}
.cmd code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.cmd code::-webkit-scrollbar { display: none; }
.copy { display: inline-flex; align-items: center; gap: 6px; flex: none; padding: 7px 12px; border-radius: var(--radius); background: var(--raised); font-size: 14px; transition: background-color 0.12s ease-out; }
.copy:hover { background: var(--hover); }
.copy.done { color: var(--live); }
.hero-cmd { width: max-content; max-width: 100%; }

/* The cutting room: a viewer, the shot pane and a timeline, like the editor */
.frame {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(320px, 30%, 400px);
  grid-template-areas: "stage side" "tl tl";
  border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--room);
}
.stage { grid-area: stage; display: grid; grid-template-rows: auto 56px; min-width: 0; }
.screen {
  position: relative; width: calc(100% - 28px); margin: 14px 14px 0; border-radius: var(--radius); overflow: hidden; background: var(--screen);
  aspect-ratio: 1920 / 1088; max-height: max(320px, calc(100svh - 462px));
}
.screen video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.transport { display: flex; align-items: center; justify-content: center; gap: 6px; }
.tool { width: 44px; min-height: 36px; padding: 0; }
#play { width: 52px; }
.tool.flat { width: 36px; background: transparent; color: var(--muted); }
.tool.flat:hover { background: var(--raised); color: var(--text); }
.tool .solid { fill: currentColor; stroke: none; }
.tool .when-paused, .tool .when-muted { display: none; }
.paused .tool .when-paused { display: inline; }
.paused .tool .when-playing { display: none; }
#sound[aria-pressed="false"] .when-sound { display: none; }
#sound[aria-pressed="false"] .when-muted { display: inline; }
.clock { margin-left: 14px; color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.clock b { color: var(--text); font-size: 18px; font-weight: 600; }

.side { grid-area: side; display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--panel); border-left: 1px solid var(--line); }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin: 14px 14px 0; padding: 4px; border-radius: 8px; background: var(--room); border: 1px solid var(--line); }
.seg button { min-height: 36px; padding: 6px 10px; border-radius: var(--radius); background: transparent; color: var(--muted); font-weight: 500; transition: background-color 0.12s ease-out, color 0.12s ease-out; }
.seg button:hover { color: var(--text); }
.seg button[aria-selected="true"] { background: var(--tungsten); color: var(--tungsten-ink); font-weight: 600; }
.pane {
  flex: 1 1 0; min-height: 0; overflow-y: auto; padding: 16px 16px 40px;
  -webkit-mask-image: linear-gradient(to bottom, #000 calc(100% - 36px), transparent);
  mask-image: linear-gradient(to bottom, #000 calc(100% - 36px), transparent);
}
.file-label { margin: 16px 0 8px; color: var(--muted); font-size: 13px; }
.file-label code { color: var(--text); }
.pane[hidden] { display: none; }
.swap { animation: swap 0.22s cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes swap { from { opacity: 0.35; } to { opacity: 1; } }
.shot-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.shot-head h2 { font-size: 18px; font-weight: 600; }
.shot-head p { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.fields { display: grid; gap: 12px; margin: 0; }
.fields dt { margin-bottom: 5px; color: var(--muted); font-size: 13px; }
.fields dd { margin: 0; }
.field { padding: 9px 11px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--room); font-size: 14px; line-height: 1.5; min-height: 40px; }
.field.empty { color: var(--muted); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pair[hidden] { display: none; }
.field.cast span { display: inline-flex; align-items: center; gap: 8px; }
.field.cast span[hidden] { display: none; }
.field.cast img { width: 28px; height: 28px; border-radius: 4px; object-fit: cover; }
.field.cast .none { color: var(--muted); }
.film video { display: block; width: 100%; aspect-ratio: 16 / 9; border: 1px solid var(--line); border-radius: var(--radius); background: var(--screen); }

.term {
  margin: 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--room);
  font: 13px/1.6 var(--mono); font-variant-ligatures: none; white-space: pre-wrap; overflow-wrap: break-word; color: var(--text);
}
.term .line { display: block; padding-left: 2ch; text-indent: -2ch; }
#file .line { padding-left: 4ch; text-indent: -4ch; }
.term .nowrap { white-space: nowrap; }
.term .p { color: var(--live); }
.term .o { color: var(--muted); }
.term .k { color: var(--muted); }
.term .s { color: var(--text); }
.term .n { color: var(--tungsten); }
.note { margin-top: 12px; color: var(--muted); font-size: 13px; }

.timeline { grid-area: tl; display: grid; grid-template-columns: 96px minmax(0, 1fr); border-top: 1px solid var(--line); }
.heads { display: grid; grid-template-rows: 26px 72px 46px; background: var(--panel); border-right: 1px solid var(--line); }
.heads span { display: flex; align-items: center; padding: 0 14px; color: var(--muted); font-size: 13px; border-bottom: 1px solid var(--line); }
.heads span:last-child { border-bottom: 0; }
.track { position: relative; display: grid; grid-template-rows: 26px 72px 46px; cursor: ew-resize; touch-action: pan-y; user-select: none; outline-offset: -2px; }
.ruler { position: relative; background: var(--panel); border-bottom: 1px solid var(--line); }
.tick { position: absolute; top: 0; height: 100%; padding: 4px 0 0 5px; border-left: 1px solid var(--line); color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.lane { position: relative; border-bottom: 1px solid var(--line); }
.lane:last-child { border-bottom: 0; }
.block {
  position: absolute; top: 7px; bottom: 7px; border-radius: 5px; overflow: hidden;
  background: var(--raised) left center / auto 100% repeat-x; border: 2px solid transparent;
}
.block.on { border-color: var(--tungsten); }
.block span { position: absolute; left: 6px; top: 5px; padding: 1px 7px; border-radius: 4px; background: rgba(20, 24, 28, 0.82); font-size: 12px; }
.sound { background: rgba(87, 189, 176, 0.07); }
.sound svg { position: absolute; inset: 5px 0; width: 100%; height: calc(100% - 10px); }
.sound rect { fill: var(--live); opacity: 0.8; }
.playhead { position: absolute; top: 0; bottom: 0; left: 0; width: 2px; margin-left: -1px; background: var(--tungsten); pointer-events: none; }
.playhead::before { content: ""; position: absolute; top: 0; left: -6px; width: 14px; height: 12px; background: var(--tungsten); clip-path: polygon(0 0, 100% 0, 100% 55%, 50% 100%, 0 55%); }
.credit { margin-top: 12px; max-width: 80ch; color: var(--muted); font-size: 14px; }

/* Sections */
.section { padding-top: clamp(72px, 10vw, 112px); }
.section > h2, .agents h2 { font-size: clamp(26px, 2.4vw, 32px); font-weight: 650; letter-spacing: -0.01em; margin-bottom: 26px; }
.rows { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line); }
.rows li { display: grid; grid-template-columns: minmax(220px, 320px) minmax(0, 62ch) 1fr; gap: 8px 40px; align-items: baseline; padding: 22px 0; border-top: 1px solid var(--line); }
.rows h3 { font-size: 18px; font-weight: 600; }
.rows p { color: var(--muted); }
.ctls { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.ctl { padding: 4px 10px; border-radius: var(--radius); background: var(--raised); color: var(--text); font-size: 13px; white-space: nowrap; cursor: default; }
.shot { margin: 48px 0 0; }
.shot img { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 8px; }
.shot figcaption { margin-top: 12px; max-width: 80ch; color: var(--muted); font-size: 14px; }

.steps { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps > li { position: relative; counter-increment: step; display: grid; gap: 14px; padding: 28px 0 32px 64px; border-top: 1px solid var(--line); }
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: 26px;
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--line); color: var(--muted); font-weight: 600; font-variant-numeric: tabular-nums;
}
.steps h3 { font-size: 20px; font-weight: 600; }
.steps p { max-width: 75ch; }
.steps .cmd { max-width: 720px; }
.small { color: var(--muted); font-size: 14px; }
.howto { margin: 0; padding-left: 1.3em; display: grid; gap: 8px; max-width: 75ch; }
.howto li::marker { color: var(--muted); font-variant-numeric: tabular-nums; }

.models { width: 100%; border-collapse: collapse; font-size: 14px; }
.models th { padding: 8px 12px 8px 0; color: var(--muted); font-weight: 500; text-align: left; border-bottom: 1px solid var(--line); }
.models td { padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.models td code { overflow-wrap: anywhere; }
.models .num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; padding-right: 24px; }
.models .for { display: block; margin-top: 3px; color: var(--muted); font-size: 13px; }

.agents { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px 56px; align-items: start; }
.agents-text p { max-width: 62ch; color: var(--muted); }
.agents-text p + p { margin-top: 14px; }
.agents-text strong, .agents-text code { color: var(--text); }
.more { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.more a { font-weight: 600; }
.agents .term { margin-top: 64px; font-size: 14px; padding: 18px 20px; }

.foot {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px 56px;
  margin-top: clamp(72px, 10vw, 112px); padding-top: 32px; padding-bottom: 48px;
  background: linear-gradient(var(--line), var(--line)) var(--gutter) 0 / calc(100% - 2 * var(--gutter)) 1px no-repeat;
  color: var(--muted); font-size: 14px;
}
.foot p { max-width: 75ch; }
.foot p + p { margin-top: 10px; }
.foot strong { color: var(--text); }
.foot nav { display: grid; gap: 8px; align-content: start; }

/* Narrower screens */
@media (max-width: 1080px) {
  .rows li { grid-template-columns: minmax(200px, 280px) minmax(0, 1fr); }
  .ctls { grid-column: 2; justify-content: flex-start; }
  .agents { grid-template-columns: minmax(0, 1fr); }
  .agents .term { margin-top: 0; }
}
@media (max-width: 860px) {
  .links { display: none; }
  .frame { grid-template-columns: minmax(0, 1fr); grid-template-areas: "stage" "tl" "side"; }
  .screen { max-height: none; }
  .side { border-left: 0; border-top: 1px solid var(--line); }
  .timeline { border-top: 1px solid var(--line); }
  .pane { flex: none; overflow: visible; padding-bottom: 18px; -webkit-mask-image: none; mask-image: none; }
  .hero { grid-template-columns: minmax(0, 1fr); }
  .hero-cmd { width: auto; }
}
@media (max-width: 640px) {
  .cmd code { white-space: normal; }
  #prev, #next { display: none; }
  .clock { margin-left: 8px; white-space: nowrap; }
  .bar .with-icon span { display: none; }
  .bar .with-icon { width: 40px; padding: 0; }
  .mark { margin-right: 0; }
  .timeline { grid-template-columns: 0 minmax(0, 1fr); }
  .heads { visibility: hidden; border: 0; }
  .track, .heads { grid-template-rows: 22px 56px 36px; }
  .block span { font-size: 11px; }
  .pair { grid-template-columns: 1fr; }
  .rows li { grid-template-columns: minmax(0, 1fr); }
  .ctls { grid-column: 1; }
  .steps > li { padding-left: 0; padding-top: 72px; }
  .steps > li::before { top: 24px; }
  .models thead { display: none; }
  .models, .models tbody, .models tr, .models td { display: block; width: 100%; }
  .models tr { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .models td { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 10px; padding: 3px 0; border: 0; text-align: left; }
  .models td::before { content: attr(data-label); color: var(--muted); font-size: 13px; }
  .models .num { text-align: left; padding-right: 0; }
  .models td:first-child { grid-template-columns: minmax(0, 1fr); }
  .models td:first-child::before { display: none; }
  .foot { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .swap { animation: none; }
  .primary, .quiet, .copy, .seg button { transition: none; }
}