/* QESIS+ design tokens v1.0 · 2026-07-28
   The single source of colour, type, spacing and elevation.
   Nothing else in the codebase declares a colour literal. */

:root {
  /* ── Surfaces and ink ────────────────────────────────────────────── */
  --bg: #141b2b;
  --card: #1b2334;
  --head: #2a2f3a;
  --line: #3a445c;
  --ink: #f8f8f7;
  --mut: #9aa3ba;

  /* ── Cool family: sequential, low to high exposure ───────────────── */
  --cool-100: #dce7f5;
  --cool-300: #93b3dd;
  --cool-500: #5b7fa6;
  --cool-700: #3f5c7d;
  --cool-900: #28394d;

  /* ── Warm family: categorical partner ────────────────────────────── */
  --warm-300: #e0c3a5;
  --warm-500: #c99b72;
  --warm-700: #9c7350;

  /* ── The one hot accent. One use per view. ───────────────────────── */
  --hot: #c96a5e;

  /* ── Semantic ────────────────────────────────────────────────────── */
  --pos: #4d7c62;
  --neg: #c96a5e;
  --epis: #6d7382;   /* epistemic gap: labelled, never interpolated */

  /* ── Typography ──────────────────────────────────────────────────── */
  --font-prose: ui-serif, Charter, "Iowan Old Style", Georgia, serif;
  --font-ui: ui-sans-serif, "Inter", system-ui, sans-serif;
  --font-num: ui-monospace, "SF Mono", "Cascadia Mono", monospace;

  --t-xs: 12px;
  --t-sm: 14px;
  --t-md: 16px;
  --t-lg: 20px;
  --t-xl: 25px;
  --t-2xl: 31px;

  /* ── Spacing, 4px base ───────────────────────────────────────────── */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;

  /* ── Radius and elevation ────────────────────────────────────────── */
  --r-sm: 4px;
  --r-md: 8px;
  --r-full: 999px;
  --e-1: 0 1px 2px rgb(0 0 0 / 0.30);
  --e-2: 0 4px 12px rgb(0 0 0 / 0.35);

  /* ── Chart canvas heights. Explicit, always (L-014). ─────────────── */
  --chart-h: 320px;
  --chart-h-tall: 440px;
  --chart-h-spark: 64px;
}

/* Light surface for print and for the downloadable one-pagers. */
@media print {
  :root {
    --bg: #ffffff;
    --card: #f8f8f7;
    --head: #efeeeb;
    --line: #d8d6d1;
    --ink: #141b2b;
    --mut: #5b6070;
  }
}

/* ── Chart pattern ─────────────────────────────────────────────────── */
.chart {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: var(--s-4);
  margin: 0 0 var(--s-5);
  box-shadow: var(--e-1);
}

.chart__title {
  font: 600 var(--t-lg) / 1.4 var(--font-ui);
  color: var(--ink);
  margin-bottom: var(--s-3);
}

/* The wrapper carries the height. A canvas has no intrinsic size, and a
   chart without a sized wrapper overflows its frame at some viewport. */
.chart__canvas {
  position: relative;
  height: var(--chart-h);
  width: 100%;
}

.chart__canvas > canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
}

.chart__canvas--tall { height: var(--chart-h-tall); }
.chart__canvas--spark { height: var(--chart-h-spark); }

/* Mandatory. Data without a clickable origin is unpublishable. */
.chart__source {
  font: var(--t-xs) / 1.5 var(--font-ui);
  color: var(--mut);
  margin-top: var(--s-3);
  padding-top: var(--s-2);
  border-top: 1px solid var(--line);
}

.chart__source a {
  color: var(--cool-300);
  text-underline-offset: 2px;
}

/* ── Numbers ───────────────────────────────────────────────────────── */
.num,
td.num,
.score {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
}

.score--hot { color: var(--hot); }
.score--pos { color: var(--pos); }
.score--neg { color: var(--neg); }

/* An epistemic gap is grey and labelled. It is never blank and never zero. */
.score--gap {
  color: var(--epis);
  font-style: normal;
}
.score--gap::after {
  content: " no coverage";
  font-family: var(--font-ui);
  font-size: var(--t-xs);
}

/* ── Provenance chip ───────────────────────────────────────────────── */
.prov {
  display: inline-flex;
  gap: var(--s-1);
  align-items: center;
  padding: 2px var(--s-2);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  font: var(--t-xs) / 1.4 var(--font-ui);
  color: var(--mut);
}
.prov--unrecorded { border-color: var(--epis); color: var(--epis); }

/* ── Exchange block ────────────────────────────────────────────────── */
.exchange {
  border-top: 1px solid var(--line);
  margin-top: var(--s-8);
  padding-top: var(--s-6);
}
.exchange__gdpr {
  font: var(--t-xs) / 1.6 var(--font-ui);
  color: var(--mut);
  max-width: 62ch;
  margin-top: var(--s-3);
}

/* ── Accessibility floor ───────────────────────────────────────────── */
:where(a, button, input, select, [tabindex]):focus-visible {
  outline: 2px solid var(--cool-300);
  outline-offset: 2px;
}

button, .btn, a.btn {
  min-height: 44px;
  min-width: 44px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}