/* Tokens: chart chrome and series colours follow the dataviz reference palette (slot 1 blue, slot 2 orange). */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #706f6a;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --wash: #f0efec;
  --best-bg: color-mix(in srgb, var(--series-skill) 18%, var(--surface));
  --link: #256abf;
  --button-bg: #0b0b0b;
  --button-ink: #ffffff;
  --button-hover: #383835;
  --series-baseline: #2a78d6;
  --series-skill: #eb6834;
  --series-watch: #1baf7a;
  --series-video-use: #eda100;
  --film: #1a1a19;
  --film-cell: #2c2c2a;
  --film-unseen: #52514e;
  --film-toast: #e1e0d9;
  --film-text: #c3c2b7;
  --font-sans: system-ui, -apple-system, "Segoe UI", "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 10px;
  --header-offset: 72px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --wash: #242423;
    --best-bg: color-mix(in srgb, var(--series-skill) 26%, var(--surface));
    --link: #86b6ef;
    --button-bg: #ffffff;
    --button-ink: #0b0b0b;
    --button-hover: #e1e0d9;
    --series-baseline: #3987e5;
    --series-skill: #d95926;
    --series-watch: #199e70;
    --series-video-use: #c98500;
    --film: #111110;
    --film-cell: #2c2c2a;
    --film-unseen: #52514e;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.1);
  --wash: #242423;
  --best-bg: color-mix(in srgb, var(--series-skill) 26%, var(--surface));
  --link: #86b6ef;
  --button-bg: #ffffff;
  --button-ink: #0b0b0b;
  --button-hover: #e1e0d9;
  --series-baseline: #3987e5;
  --series-skill: #d95926;
  --series-watch: #199e70;
  --series-video-use: #c98500;
  --film: #111110;
  --film-cell: #2c2c2a;
  --film-unseen: #52514e;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-offset); }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.65 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
p { margin: 0; }
h1, h2, h3 { margin: 0; }
a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 4px; }
code { font: 0.9em var(--font-mono); background: var(--wash); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
pre {
  margin: 0;
  background: var(--film);
  color: #f0efec;
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font: 14px/1.6 var(--font-mono);
}
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.wrap { width: 100%; max-width: 1080px; margin-inline: auto; padding-inline: 16px; }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 20;
  background: var(--button-bg); color: var(--button-ink); padding: 8px 12px; border-radius: 6px;
}
.skip-link:focus { top: 12px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--page) 94%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-bar { display: flex; align-items: center; gap: 16px; min-height: 56px; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand:hover { color: var(--link); }
.section-nav { display: flex; gap: 2px; flex: 1; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.section-nav a {
  padding: 6px 10px; border-radius: 6px; color: var(--ink-2); text-decoration: none;
  font-size: 14px; white-space: nowrap; transition: color 0.15s ease, background-color 0.15s ease;
}
.section-nav a:hover { color: var(--ink); background: var(--wash); }
.header-tools { display: flex; align-items: center; gap: 8px; margin-left: auto; }
select {
  font: 14px var(--font-sans); color: var(--ink); background: var(--surface);
  border: 1px solid var(--border); border-radius: 6px; padding: 5px 8px; cursor: pointer;
  transition: border-color 0.15s ease;
}
select:hover { border-color: var(--axis); }
.header-link {
  font-size: 14px; font-weight: 600; color: var(--ink); text-decoration: none;
  padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px;
  transition: border-color 0.15s ease, transform 0.1s ease;
}
.header-link:hover { border-color: var(--ink); }
.header-link:active { transform: scale(0.97); }

@media (max-width: 820px) {
  :root { --header-offset: 108px; }
  .header-bar { flex-wrap: wrap; gap: 8px 12px; padding-top: 8px; }
  .section-nav { order: 3; flex-basis: 100%; margin-inline: -10px; padding-bottom: 6px; }
}

/* Hero */
.hero { padding-block: 56px 24px; display: grid; gap: 20px; }
.eyebrow { font: 500 13px/1.4 var(--font-mono); letter-spacing: 0.02em; color: var(--ink-2); }
h1 { font-size: clamp(42px, 7vw, 64px); line-height: 1.02; letter-spacing: -0.03em; font-weight: 700; }
.pitch { font-size: clamp(19px, 2.4vw, 23px); line-height: 1.45; max-width: 38ch; text-wrap: balance; }
.lede { color: var(--ink-2); max-width: 62ch; }
.strip-figure { margin: 8px 0 0; display: grid; gap: 10px; max-width: 760px; }
.strip { background: var(--film); border-radius: 12px; padding: 16px; display: grid; gap: 12px; }
.strip-row { display: grid; grid-template-columns: 9rem 1fr; gap: 12px; align-items: center; }
.strip-label { font: 12px/1.3 var(--font-mono); color: var(--film-text); }
.strip-frames svg { display: block; width: 100%; height: auto; }
.strip .cell { fill: var(--film-cell); }
.strip .cell.unseen { fill: none; stroke: var(--film-unseen); stroke-width: 1; }
.strip .toast { fill: var(--film-toast); }
.strip .span { fill: var(--series-skill); }
.strip .span.missed { fill: var(--film-unseen); }
.strip-note { font-size: 14px; color: var(--ink-2); }
.hero-summary {
  max-width: 72ch; font-size: 15px; color: var(--ink-2); display: grid; gap: 4px;
  padding: 12px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
}
.hero-summary ul { margin: 0; padding-left: 20px; display: grid; gap: 2px; }
.hero-summary li::marker { color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex; align-items: center; gap: 8px; font: 600 15px/1 var(--font-sans);
  padding: 12px 18px; border-radius: 8px; border: 1px solid var(--button-bg);
  background: var(--button-bg); color: var(--button-ink); text-decoration: none; cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}
.button:hover { background: var(--button-hover); border-color: var(--button-hover); }
.button.secondary { background: transparent; color: var(--ink); border-color: var(--axis); }
.button.secondary:hover { border-color: var(--ink); background: transparent; }
.button:active, .copy-button:active, .segment:active, .text-button:active { transform: scale(0.97); }

@media (max-width: 560px) {
  .hero { padding-top: 36px; }
  .strip-row { grid-template-columns: 1fr; gap: 6px; }
}

/* Sections */
.section { padding-block: 44px; display: grid; gap: 20px; }
.section + .section { border-top: 1px solid var(--border); }
h2 { font-size: clamp(26px, 3.2vw, 32px); letter-spacing: -0.02em; line-height: 1.15; }
h3 { font-size: 18px; line-height: 1.3; }
.section-lede { color: var(--ink-2); max-width: 70ch; }
.block { display: grid; gap: 12px; }
.grid-3 { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-2 { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: grid; gap: 10px; align-content: start; min-width: 0;
}
.card > p { color: var(--ink-2); }
.list { margin: 0; padding-left: 20px; display: grid; gap: 10px; }
.list li { max-width: 74ch; }
.list li::marker { color: var(--muted); }
.sublist { margin-top: 8px; }
.note { font-size: 14px; color: var(--ink-2); max-width: 74ch; }

/* Tables */
.table-wrap { position: relative; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--grid); vertical-align: top; }
thead th { font-size: 13px; color: var(--ink-2); font-weight: 600; }
tbody th { font-weight: 600; }
tbody tr:last-child > * { border-bottom: 0; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.compare td { color: var(--ink-2); }
/* Where video-lens is ahead: the comparison column, and data-table cells that beat every compared value. */
.compare .is-lens { background: var(--best-bg); color: var(--ink); }
.cell-best { background: var(--best-bg); font-weight: 600; }
.table-note { margin: 0; padding: 8px 14px; border-top: 1px solid var(--grid); }

/* Charts */
.chart-grid { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 940px) {
  .chart-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chart-card.wide { grid-column: 1 / -1; }
}
.chart-card {
  margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: grid; gap: 12px; min-width: 0; align-content: start;
}
.chart-head { display: grid; gap: 4px; }
.chart-title { font-size: 17px; }
.chart-sub { font-size: 14px; color: var(--ink-2); }
.legend { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--ink-2); }
.legend li { display: flex; align-items: center; gap: 6px; }
.legend-icon { width: 14px; height: 14px; flex: none; }
.chart-box { position: relative; min-width: 0; }
.chart-box canvas:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; }
.chart-tip {
  position: absolute; left: 0; top: 0; z-index: 2; pointer-events: none;
  min-width: 170px; max-width: 290px; padding: 10px 12px; display: grid; gap: 4px;
  background: var(--surface); color: var(--ink); font-size: 13px; line-height: 1.4;
  border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
}
.chart-tip[hidden] { display: none; }
.tip-title { font-weight: 600; color: var(--ink-2); margin-bottom: 2px; }
.tip-row { display: flex; align-items: baseline; gap: 8px; }
.tip-key { width: 12px; height: 2px; border-radius: 1px; flex: none; align-self: center; }
.tip-sub { padding-left: 20px; }
.tip-value { font-weight: 650; font-variant-numeric: tabular-nums; color: var(--ink); }
.tip-label { color: var(--ink-2); }
.chart-captions { margin: 0; padding: 0; list-style: none; display: grid; gap: 2px; font-size: 14px; color: var(--ink-2); }
.chart-foot {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 16px;
  border-top: 1px solid var(--grid); padding-top: 10px;
}
.chart-source { font-size: 12px; color: var(--muted); }
.chart-loading { color: var(--ink-2); font-size: 14px; padding-block: 24px; }
.text-button {
  font: 600 13px var(--font-sans); color: var(--link); background: none; cursor: pointer;
  border: 1px solid transparent; border-radius: 6px; padding: 4px 8px; margin-left: -8px;
  transition: border-color 0.15s ease, transform 0.1s ease;
}
.text-button:hover { border-color: var(--border); text-decoration: underline; }
.chart-controls { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: end; }
.control { display: grid; gap: 4px; }
.control-label { font-size: 12px; font-weight: 600; color: var(--ink-2); }
.segmented { display: inline-flex; gap: 2px; padding: 2px; border: 1px solid var(--border); border-radius: 8px; background: var(--page); }
.segment {
  font: 500 14px var(--font-sans); color: var(--ink-2); background: none; border: 0; border-radius: 6px;
  padding: 5px 12px; cursor: pointer; transition: background-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.segment:hover { color: var(--ink); background: var(--wash); }
.segment[aria-pressed="true"] { color: var(--ink); background: var(--surface); box-shadow: 0 0 0 1px var(--border); }

/* Install */
.command { display: grid; gap: 8px; }
.copy-button {
  justify-self: start; font: 600 13px var(--font-sans); color: var(--ink); background: var(--surface);
  border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.copy-button:hover { border-color: var(--ink); }

/* Pipeline */
.pipeline {
  list-style: none; margin: 0; padding: 0; counter-reset: step;
  display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.pipeline li {
  counter-increment: step; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; display: grid; gap: 6px; align-content: start;
}
.pipeline li::before { content: counter(step, decimal-leading-zero); font: 600 12px var(--font-mono); color: var(--muted); }
.pipeline h3 { font-size: 16px; }
.pipeline p { font-size: 14.5px; color: var(--ink-2); }

/* Use cases */
/* One reel per row: each video is the original and the rebuild side by side (32:9). */
.case-grid { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
.case-video { display: block; width: 100%; height: auto; aspect-ratio: 32 / 9; background: var(--film); border-radius: 8px; }
.case-scores { gap: 4px; font-size: 15px; }
.case-link { font-weight: 600; }
.prompt-box summary { cursor: pointer; font-weight: 600; width: fit-content; }
.prompt-box summary:hover { color: var(--link); }
.prompt-box pre { margin-top: 12px; white-space: pre-wrap; overflow-wrap: anywhere; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding-block: 28px 44px; color: var(--ink-2); font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; }

/* ?chart=<id>: one chart at a fixed width, used by tools/render_charts.mjs */
html.solo body > :not(#solo) { display: none !important; }
html.solo, html.solo body { background: transparent; }
#solo { padding: 16px; width: max-content; }
html.solo .chart-card { width: 800px; }
html.solo .chart-foot { justify-content: flex-end; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}