:root {
  --bg: #fbf6ee;
  --surface: #ffffff;
  --surface-2: #f4ede1;
  --ink: #1c1a22;
  --ink-2: #57525f;
  --ink-3: #6e6874;
  --line: #e6ddcf;
  --accent: #ff5d8f;
  --accent-ink: #ffffff;
  --accent-strong: #c72a62; /* button background: white text on it passes WCAG AA */
  --smart: #1f9d62;
  --meh: #9a6700;
  --dumb: #8b4dd6;
  --bad: #d8434f;
  --radius: 18px;
  --shadow: 0 1px 0 rgba(28, 26, 34, .04), 0 10px 30px -12px rgba(28, 26, 34, .18);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --display: 'Bricolage Grotesque', 'Inter', system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15131a;
    --surface: #1f1c26;
    --surface-2: #2a2632;
    --ink: #f3eff8;
    --ink-2: #bdb6c7;
    --ink-3: #9a93a6;
    --line: #34303e;
    --smart: #3fcb88;
    --meh: #f0b135;
    --dumb: #b184ff;
    --bad: #ff6b76;
    --shadow: 0 10px 30px -12px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }

/* Author display rules (like .report { display: grid }) would otherwise beat the hidden attribute. */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { width: 100%; max-width: 980px; margin: 0 auto; padding: 0 16px 48px; flex: 1; }

a { color: inherit; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* Header */
.top { max-width: 980px; margin: 0 auto; width: 100%; padding: 18px 16px 0; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 800 22px/1 var(--display); letter-spacing: -.02em; }

/* Intro */
.intro { text-align: center; padding: 48px 0 24px; }
.intro h1 { font: 800 clamp(34px, 6vw, 60px)/1.02 var(--display); letter-spacing: -.035em; margin: 0 auto 16px; max-width: 14ch; }
.intro em { font-style: normal; }
.intro .smart { color: var(--smart); }
.intro .dumb { color: var(--dumb); }
.lede { color: var(--ink-2); max-width: 58ch; margin: 0 auto; font-size: 17px; }
body.has-report .intro { padding: 24px 0 12px; }
body.has-report .intro h1 { font-size: clamp(24px, 3.4vw, 32px); max-width: none; }
body.has-report .lede { display: none; }

/* Search */
.search { display: flex; gap: 10px; max-width: 680px; margin: 8px auto 24px; background: var(--surface); padding: 8px; border-radius: 999px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.search input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink); font: 500 16px var(--font); padding: 10px 14px; outline: none; }
.search input::placeholder { color: var(--ink-3); }
.search:focus-within { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }
button {
  font: 700 16px var(--font); border: 0; cursor: pointer; border-radius: 999px; padding: 12px 22px;
  background: var(--accent-strong); color: var(--accent-ink); transition: transform .12s ease, filter .12s ease;
}
button:hover { filter: brightness(.94); }
button:active { transform: scale(.97); }
button:disabled { opacity: .6; cursor: progress; }
button.ghost { background: var(--surface-2); color: var(--ink); }

.notice { max-width: 680px; margin: 0 auto 24px; padding: 14px 18px; border-radius: 14px; background: color-mix(in srgb, var(--meh) 14%, var(--surface)); border: 1px solid color-mix(in srgb, var(--meh) 35%, transparent); color: var(--ink-2); font-size: 14.5px; }
.notice strong { color: var(--ink); }
code { font-size: .92em; background: var(--surface-2); padding: 1px 6px; border-radius: 6px; }

/* Progress */
.progress { max-width: 520px; margin: 12px auto 32px; text-align: center; }
.brain-spin { font-size: 56px; animation: bob 1.4s ease-in-out infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0) rotate(-6deg); } 50% { transform: translateY(-10px) rotate(6deg); } }
.steps { list-style: none; padding: 0; margin: 16px 0 8px; display: grid; gap: 8px; text-align: left; }
.steps li { padding: 10px 14px 10px 42px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); color: var(--ink-3); position: relative; }
.steps li::before { content: ''; position: absolute; left: 14px; top: 50%; width: 16px; height: 16px; margin-top: -8px; border-radius: 50%; border: 2px solid var(--line); }
.steps li.active { color: var(--ink); border-color: var(--accent); }
.steps li.active::before { border-color: var(--accent); border-top-color: transparent; animation: spin .8s linear infinite; }
.steps li.done { color: var(--ink-2); }
.steps li.done::before { background: var(--smart); border-color: var(--smart); }
.steps li.skip { text-decoration: line-through; }
@keyframes spin { to { transform: rotate(360deg); } }
.progress-msg { color: var(--ink-2); min-height: 1.5em; }

/* Error */
.error { max-width: 680px; margin: 0 auto 24px; background: var(--surface); border: 1px solid color-mix(in srgb, var(--bad) 40%, var(--line)); border-radius: var(--radius); padding: 18px 20px; }
.error > p { margin: 0; font-weight: 600; }
.paste-help { color: var(--ink-2); font-size: 14.5px; }
textarea { width: 100%; border-radius: 12px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); font: 14px/1.5 var(--font); padding: 12px; margin-bottom: 10px; resize: vertical; }

/* Report */
.report { display: grid; gap: 16px; animation: rise .4s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }

.video-head { display: flex; gap: 16px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; box-shadow: var(--shadow); }
.video-head img { width: 168px; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 12px; flex: none; background: var(--surface-2); }
.video-head .video-text { min-width: 0; }
.video-head h2 { font: 700 20px/1.25 var(--display); margin: 0 0 4px; letter-spacing: -.01em; }
.video-head h2, .video-head .sub, .card { overflow-wrap: anywhere; }
.video-head h2:focus:not(:focus-visible), #error-msg:focus:not(:focus-visible) { outline: none; }
.video-head h2 a { text-decoration: none; }
.video-head h2 a:hover { text-decoration: underline; }
.video-head .sub { color: var(--ink-2); font-size: 14.5px; }
.video-head .actions { margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.video-head .actions button { padding: 7px 14px; font-size: 14px; }

.hero { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); min-width: 0; }
.card h3 { font: 700 13px/1 var(--font); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.card h3 .tag { text-transform: none; letter-spacing: 0; font-weight: 600; font-size: 12px; padding: 3px 8px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); }
.card .big { font: 800 38px/1 var(--display); letter-spacing: -.03em; margin-bottom: 6px; }
.card .big .small { font: 500 14px var(--font); letter-spacing: 0; color: var(--ink-3); margin-left: 8px; }
.card p { margin: 8px 0 0; color: var(--ink-2); }
.card .needs-ai { color: var(--ink-3); font-style: italic; }

/* Score card */
.score { position: relative; overflow: hidden; }
.score .row { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; }
.score .iq { font: 800 clamp(72px, 12vw, 112px)/.85 var(--display); letter-spacing: -.05em; color: var(--verdict); font-variant-numeric: tabular-nums; }
.score .iq-label { font: 700 13px var(--font); color: var(--ink-3); text-transform: uppercase; letter-spacing: .08em; }
.score .verdict { font: 700 22px/1.2 var(--display); margin-bottom: 6px; }
.score .headline { font-size: 18px; color: var(--ink); margin: 14px 0 0; font-weight: 500; }
.score ul { margin: 14px 0 0; padding-left: 20px; color: var(--ink-2); }
.score li + li { margin-top: 4px; }
/* Color bands line up with the verdict thresholds: 80, 92, 108 and 125 on the 70-145 scale. */
.gauge { position: relative; height: 12px; border-radius: 999px; margin: 22px 0 6px; background: linear-gradient(90deg, var(--bad) 0%, var(--bad) 8%, var(--dumb) 18%, var(--dumb) 25%, var(--meh) 33%, var(--meh) 47%, var(--smart) 55%, var(--smart) 100%); }
.gauge .marker { position: absolute; top: 50%; width: 22px; height: 22px; margin: -11px 0 0 -11px; border-radius: 50%; background: var(--surface); border: 4px solid var(--ink); box-shadow: 0 2px 6px rgba(0,0,0,.25); transition: left 1s cubic-bezier(.2,.8,.2,1); }
.gauge-scale { position: relative; height: 1.5em; font-size: 12px; color: var(--ink-3); }
.gauge-scale span { position: absolute; top: 0; white-space: nowrap; }
.gauge-scale .mid { transform: translateX(-50%); }

/* Brain Food Facts label */
.facts { background: var(--surface); color: var(--ink); border: 3px solid var(--ink); border-radius: 6px; padding: 12px 14px; font-family: 'Helvetica Neue', Arial, var(--font); box-shadow: var(--shadow); align-self: start; }
.facts h3 { font: 900 30px/1 'Helvetica Neue', Arial, var(--font); letter-spacing: -.02em; margin: 0; color: var(--ink); text-transform: none; }
.facts .serving { border-bottom: 10px solid var(--ink); padding: 4px 0 6px; font-size: 14px; }
.facts dl { margin: 0; }
.facts .fact { display: flex; justify-content: space-between; gap: 12px; padding: 5px 0; border-bottom: 1px solid var(--ink); font-size: 15px; }
.facts .fact dt { font-weight: 700; }
.facts .fact dd { margin: 0; text-align: right; font-weight: 500; }
.facts .fact.thick { border-bottom-width: 5px; }
.facts .fine { font-size: 11.5px; line-height: 1.35; margin: 8px 0 0; color: var(--ink-2); }

.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid .wide { grid-column: 1 / -1; }

/* Meters */
.meter { display: grid; grid-template-columns: repeat(10, 1fr); gap: 4px; margin: 10px 0 4px; }
.meter span { height: 12px; border-radius: 4px; background: var(--surface-2); }
.meter span.on { background: var(--meter, var(--accent)); }
.meter-ends { display: flex; justify-content: space-between; font-size: 12px; color: var(--ink-3); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.card p.chip { display: inline-block; margin: 0 0 10px; color: var(--ink); }
.chip { font-size: 13px; padding: 4px 10px; border-radius: 999px; background: color-mix(in srgb, var(--bad) 12%, var(--surface)); color: var(--ink); border: 1px solid color-mix(in srgb, var(--bad) 30%, transparent); }

.words { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; }
.words li { padding: 10px 12px; background: var(--surface-2); border-radius: 12px; font-size: 14.5px; color: var(--ink-2); }
.words b { color: var(--ink); font-family: var(--display); font-size: 16px; margin-right: 6px; }

.tldr p { color: var(--ink); font-size: 17px; }
.tldr ul { margin: 12px 0 0; padding-left: 20px; color: var(--ink-2); }
.tldr li + li { margin-top: 4px; }

.timeline { position: relative; height: 18px; border-radius: 6px; background: var(--surface-2); margin: 14px 0 6px; overflow: hidden; }
.timeline .seg { position: absolute; top: 0; bottom: 0; background: var(--bad); min-width: 3px; }
.timeline .seg.selfpromo { background: var(--meh); }
.timeline .seg.interaction { background: var(--dumb); }
.timeline .start { position: absolute; top: -2px; bottom: -2px; width: 3px; background: var(--smart); }
.legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12.5px; color: var(--ink-3); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.seg-list { list-style: none; padding: 0; margin: 10px 0 0; font-size: 14px; color: var(--ink-2); }
.seg-list li + li { margin-top: 3px; }
.seg-list a { font-variant-numeric: tabular-nums; font-weight: 600; color: var(--ink); }

.vs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.vs div { background: var(--surface-2); border-radius: 12px; padding: 10px 12px; font-size: 14.5px; color: var(--ink-2); }
.vs b { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); margin-bottom: 2px; }

.vs.single { grid-template-columns: 1fr; }

.claims { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 10px; }
.claims li { display: flex; gap: 12px; align-items: flex-start; padding: 12px; background: var(--surface-2); border-radius: 12px; }
.claims .badge { flex: none; min-width: 92px; text-align: center; font: 700 12.5px/1 var(--font); text-transform: uppercase; letter-spacing: .05em; padding: 6px 8px; border-radius: 999px; color: var(--badge); background: color-mix(in srgb, var(--badge) 14%, var(--surface)); border: 1px solid color-mix(in srgb, var(--badge) 35%, transparent); }
.claims .claim { color: var(--ink); font-weight: 600; }
.claims .at { font: 600 13px var(--font); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.claims .note { color: var(--ink-2); font-size: 14.5px; margin-top: 2px; }

.watch { background: color-mix(in srgb, var(--smart) 7%, var(--surface)); border-color: color-mix(in srgb, var(--smart) 30%, var(--line)); }
.watch.better { background: color-mix(in srgb, var(--accent) 7%, var(--surface)); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
.watch .pitch { color: var(--ink); font-size: 17px; margin: 0; }
.watch .links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 999px; background: var(--accent-strong); color: var(--accent-ink); font-weight: 600; font-size: 14.5px; text-decoration: none; }
.pill:hover { filter: brightness(.94); }
.pill.ghost { background: var(--surface); color: var(--ink); border: 1px solid var(--line); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 4px 0 0; }
.stats div { background: var(--surface-2); border-radius: 12px; padding: 10px 12px; }
.stats dt { font-size: 12px; color: var(--ink-3); }
.stats dd { margin: 0; font: 700 20px var(--display); }
.small { font-size: 13px; color: var(--ink-3); }

.foot { text-align: center; color: var(--ink-3); font-size: 13px; padding: 24px 16px 32px; max-width: 760px; margin: 0 auto; }
.foot p { margin: 0 0 8px; }
.foot .credits { font-size: 11.5px; }

.toast { position: fixed; left: 50%; bottom: 24px; translate: -50% 0; background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: 999px; font-weight: 600; font-size: 14px; animation: rise .2s ease both; z-index: 10; }

@media (max-width: 760px) {
  .hero, .grid { grid-template-columns: 1fr; }
  .video-head { flex-direction: column; align-items: stretch; }
  .video-head img { width: 100%; }
  .search { border-radius: 18px; flex-direction: column; }
  .search button { width: 100%; }
  .vs { grid-template-columns: 1fr; }
  .claims li { flex-direction: column; gap: 8px; }
  .claims .badge { min-width: 0; }
}

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