/* margin-bench site. One column, instrument-panel feel: specs in mono, results first, details on demand. */
:root {
  --bg: #f4f6f8;
  --surface: #fcfcfb;
  --ink: #0f1419;
  --ink-2: #4a5360;
  --muted: #7d8794;
  --grid: #e3e7ec;
  --axis: #c2c9d1;
  --rule: rgba(15, 20, 25, 0.1);
  --chip: #e8ecf0;
  --curve: #2a78d6;
  --target: #7d8794;
  --band: rgba(42, 120, 214, 0.1);
  --band-edge: rgba(42, 120, 214, 0.45);
  --forbid-fill: rgba(74, 83, 96, 0.07);
  --forbid-line: rgba(74, 83, 96, 0.24);
  --mask-edge: #4a5360;
  --critical: #d03b3b;
  --critical-wash: rgba(208, 59, 59, 0.1);
  --good: #0ca30c;
  --good-ink: #006300;
  --good-wash: rgba(12, 163, 12, 0.1);
  --warn-ink: #8a5a00;
  --warn-wash: rgba(250, 178, 25, 0.16);
  --font-display: "Archivo", "Segoe UI", system-ui, sans-serif;
  --font-body: "Archivo", "Segoe UI", system-ui, sans-serif;
  --font-data: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1114; --surface: #171b1f; --ink: #eef1f4; --ink-2: #b9c1ca; --muted: #8b95a1;
    --grid: #262c32; --axis: #3a424a; --rule: rgba(255, 255, 255, 0.1); --chip: #222830;
    --curve: #3987e5; --target: #8b95a1; --band: rgba(57, 135, 229, 0.14); --band-edge: rgba(57, 135, 229, 0.5);
    --forbid-fill: rgba(185, 193, 202, 0.06); --forbid-line: rgba(185, 193, 202, 0.18); --mask-edge: #b9c1ca;
    --critical: #e25555; --critical-wash: rgba(226, 85, 85, 0.14); --good: #0ca30c; --good-ink: #3cc43c;
    --good-wash: rgba(12, 163, 12, 0.16); --warn-ink: #f0b54a; --warn-wash: rgba(250, 178, 25, 0.14);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: 15px; line-height: 1.5;
}
a { color: var(--curve); }
a:focus-visible, button:focus-visible, select:focus-visible, summary:focus-visible, tr[tabindex]:focus-visible {
  outline: 2px solid var(--curve); outline-offset: 2px;
}
.mono { font-family: var(--font-data); font-variant-numeric: tabular-nums; }
.wrap {
  max-width: 1120px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* Header */
.top { border-bottom: 1px solid var(--rule); background: var(--surface); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 24px; padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand img { width: 32px; height: 32px; border-radius: 7px; }
.brand b { font-family: var(--font-display); font-size: 18px; font-weight: 650; letter-spacing: -0.01em; }
nav { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 14px; }
nav a { color: var(--ink-2); text-decoration: none; }
nav a:hover { color: var(--ink); }
.top .gh { margin-left: auto; font-size: 14px; color: var(--ink-2); }

.hero { padding-block: 32px 8px; display: grid; gap: 10px; }
.hero h1 {
  margin: 0; font-family: var(--font-display); font-stretch: 82%; font-weight: 680;
  font-size: clamp(28px, 4.6vw, 44px); line-height: 1.05; text-wrap: balance;
}
.hero p { margin: 0; color: var(--ink-2); max-width: 72ch; }
.notice {
  border-radius: 10px; padding: 12px 16px; background: var(--warn-wash); color: var(--ink);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--warn-ink) 35%, transparent); max-width: 80ch;
}
.notice b { color: var(--warn-ink); }

section.block { padding-block: 28px 8px; display: grid; gap: 14px; }
section.block > h2 {
  margin: 0; font-family: var(--font-display); font-stretch: 90%; font-weight: 650; font-size: 22px;
}
section.block > p.lead { margin: -6px 0 0; color: var(--ink-2); max-width: 75ch; }
.panel { background: var(--surface); border-radius: 12px; box-shadow: 0 0 0 1px var(--rule); padding: 16px; min-width: 0; }
.scroll-x { overflow-x: auto; }

/* Tables */
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px 9px 0; border-bottom: 1px solid var(--rule); vertical-align: middle; }
th { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 600; white-space: nowrap; }
td.num, th.num { text-align: right; font-family: var(--font-data); font-variant-numeric: tabular-nums; white-space: nowrap; }
tbody tr[tabindex] { cursor: pointer; }
tbody tr[tabindex]:hover { background: var(--bg); }
.lb { min-width: 820px; }
.lb .model { font-weight: 600; }
.lb .model small { display: block; font-weight: 400; color: var(--muted); font-family: var(--font-data); font-size: 11.5px; }
.scorebar { display: grid; grid-template-columns: 52px 1fr; align-items: center; gap: 8px; min-width: 190px; }
.scorebar .bar { position: relative; height: 8px; background: var(--grid); border-radius: 4px; }
.scorebar .fill { position: absolute; left: 0; top: 0; bottom: 0; background: var(--curve); border-radius: 4px; }
.scorebar .ci { position: absolute; top: -3px; bottom: -3px; border-left: 1.5px solid var(--ink); border-right: 1.5px solid var(--ink); }
.scorebar .ci::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; border-top: 1.5px solid var(--ink); }
.ci-text { color: var(--muted); font-size: 11.5px; }

/* Heatmap */
.heat { min-width: 760px; }
.heat td.cell { text-align: center; font-family: var(--font-data); font-size: 13px; padding: 0; border: 2px solid var(--surface); }
.heat td.cell button {
  all: unset; display: block; width: 100%; padding: 10px 4px; cursor: pointer; text-align: center; border-radius: 4px;
}
.heat td.cell button:focus-visible { outline: 2px solid var(--ink); }
.heat th.famcol { font-size: 11px; text-transform: none; letter-spacing: 0; font-family: var(--font-data); text-align: center; }
.heat th.dom { text-align: center; border-bottom: 2px solid var(--axis); }

/* Families */
.fam-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 12px; }
.fam { display: grid; gap: 8px; align-content: start; }
.fam header { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: baseline; }
.fam h3 { margin: 0; font-size: 16px; font-weight: 650; flex-basis: 100%; }
.fam p { margin: 0; color: var(--ink-2); font-size: 14px; }
.chip { font-family: var(--font-data); font-size: 12px; background: var(--chip); padding: 2px 8px; border-radius: 4px; }
.pill { font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.pill.accepted { background: var(--good-wash); color: var(--good-ink); }
.pill.review { background: var(--warn-wash); color: var(--warn-ink); }
details summary { cursor: pointer; color: var(--ink-2); font-size: 14px; }
pre {
  margin: 8px 0 0; font-family: var(--font-data); font-size: 12.5px; line-height: 1.55; color: var(--ink);
  white-space: pre-wrap; overflow-wrap: anywhere; max-height: 420px; overflow: auto;
  background: var(--bg); border-radius: 8px; padding: 12px 14px;
}

/* Attempt browser */
.filters { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: end; }
.filters label { display: grid; gap: 4px; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 600; }
.filters select {
  font: inherit; font-size: 14px; text-transform: none; letter-spacing: 0; color: var(--ink); background: var(--surface);
  border: 1px solid var(--axis); border-radius: 6px; padding: 6px 8px; min-width: 0; max-width: 100%;
}
.att-list { min-width: 640px; }
.outcome { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; }
.outcome .dot { width: 8px; height: 8px; border-radius: 50%; }
.outcome.pass { color: var(--good-ink); } .outcome.pass .dot { background: var(--good); }
.outcome.fail { color: var(--critical); } .outcome.fail .dot { background: var(--critical); }
.outcome.fmt { color: var(--warn-ink); } .outcome.fmt .dot { background: #fab219; }
.count { color: var(--muted); font-size: 13px; }

/* Attempt viewer */
.viewer { display: grid; gap: 14px; }
body.viewing .hero > h1, body.viewing .hero > p:not(.notice) { display: none; }
.viewer-head { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; }
.viewer-head h2 { margin: 0; font-family: var(--font-display); font-stretch: 90%; font-size: 22px; font-weight: 650; }
.back { font: inherit; font-size: 14px; border: 1px solid var(--axis); background: var(--surface); color: var(--ink); border-radius: 6px; padding: 5px 12px; cursor: pointer; }
.summary-row { display: grid; grid-template-columns: minmax(200px, 0.9fr) 2fr; gap: 12px; }
@media (max-width: 760px) { .summary-row { grid-template-columns: 1fr; } }
.verdict { border-radius: 10px; padding: 16px 18px; display: grid; gap: 4px; align-content: start; background: var(--good-wash); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--good) 40%, transparent); }
.verdict.fail { background: var(--critical-wash); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--critical) 45%, transparent); }
.verdict.fmt { background: var(--warn-wash); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--warn-ink) 40%, transparent); }
.verdict-state { display: flex; align-items: center; gap: 8px; font-family: var(--font-display); font-stretch: 82%; font-weight: 700; font-size: 26px; line-height: 1.1; }
.verdict .line { font-size: 13.5px; color: var(--ink-2); }
.verdict .line .mono { color: var(--ink); }
.kv { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 2px 18px; margin: 0; }
.kv div { display: flex; justify-content: space-between; gap: 10px; border-bottom: 1px solid var(--rule); padding: 6px 0; min-width: 0; }
.kv dt { color: var(--ink-2); font-size: 13px; overflow-wrap: anywhere; }
.kv dd { margin: 0; font-family: var(--font-data); font-size: 13px; text-align: right; white-space: nowrap; }
.kv dd.bad { color: var(--critical); font-weight: 600; }
.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr)); gap: 12px; }
.chart-panel { display: grid; gap: 6px; }
.chart-panel h3 { margin: 0; font-size: 15px; font-weight: 650; }
.chart-panel .note { font-size: 12.5px; color: var(--ink-2); margin: 0; }
.keys { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12.5px; color: var(--ink-2); }
.key { display: inline-flex; align-items: center; gap: 6px; }
.key i { display: inline-block; flex: none; }
.k-answer { width: 16px; height: 2px; background: var(--curve); }
.k-target { width: 16px; height: 0; border-top: 2px dashed var(--target); }
.k-bad { width: 16px; height: 3px; background: var(--critical); }
.k-forbid { width: 14px; height: 10px; border: 1px solid var(--mask-edge); background: repeating-linear-gradient(45deg, var(--forbid-line) 0 1px, transparent 1px 4px), var(--forbid-fill); }
.k-band { width: 14px; height: 10px; background: var(--band); border: 1px solid var(--band-edge); }
.chart { position: relative; width: 100%; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { font-family: var(--font-data); font-size: 11px; fill: var(--muted); }
.tip {
  position: absolute; pointer-events: none; background: var(--surface); color: var(--ink); border-radius: 6px;
  padding: 6px 9px; font-size: 12px; line-height: 1.35; white-space: nowrap; font-family: var(--font-data);
  box-shadow: 0 0 0 1px var(--rule), 0 4px 14px rgba(0, 0, 0, 0.12);
}
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 860px) { .io { grid-template-columns: 1fr; } }
.io h3 { margin: 0; font-size: 15px; font-weight: 650; }
.io .sub { font-size: 12.5px; color: var(--muted); }

footer { padding-block: 40px 56px; color: var(--muted); font-size: 13px; }
footer p { margin: 4px 0; max-width: 80ch; }
.empty { color: var(--ink-2); font-size: 14px; }