/* Theme tokens — light/dark pairs validated against their surfaces (dataviz palette). */
:root {
  color-scheme: light dark;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-1: #2a78d6; /* standard / runs */
  --series-2: #008300; /* wiped-curated */
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-1: #3987e5;
    --series-2: #008300;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main { max-width: 62rem; margin: 0 auto; padding: 1rem 1.25rem 4rem; }
a { color: var(--series-1); }

.site-header { border-bottom: 1px solid var(--grid); background: var(--surface); }
.site-header nav {
  max-width: 62rem; margin: 0 auto; padding: 0.75rem 1.25rem;
  display: flex; gap: 1.25rem; align-items: baseline; flex-wrap: wrap;
}
.site-header a { color: var(--ink-2); text-decoration: none; }
.site-header a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.site-header .brand { color: var(--ink); font-weight: 700; font-size: 1.1rem; }
.site-footer { border-top: 1px solid var(--grid); color: var(--muted); }
.site-footer p { max-width: 62rem; margin: 0 auto; padding: 1rem 1.25rem; font-size: 0.85rem; }

h1 { font-size: 1.6rem; margin: 1.5rem 0 0.25rem; }
h2 { font-size: 1.2rem; margin: 2.25rem 0 0.5rem; }
.lede { color: var(--ink-2); margin-top: 0.25rem; }
.rules-note {
  color: var(--ink-2); font-size: 0.9rem; border-left: 3px solid var(--baseline);
  padding: 0.1rem 0 0.1rem 0.75rem; margin: 1rem 0;
}

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.5rem 0.75rem; border-top: 1px solid var(--grid); white-space: nowrap; }
thead th { border-top: none; color: var(--ink-2); font-weight: 600; font-size: 0.82rem; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: color-mix(in srgb, var(--series-1) 6%, transparent); }

.badge {
  display: inline-block; font-size: 0.72rem; font-weight: 600;
  padding: 0.05rem 0.45rem; border-radius: 999px;
  border: 1px solid var(--baseline); color: var(--ink-2);
}
.badge.ceiling { border-style: dashed; }
.badge.control { border-style: dotted; color: var(--muted); }
.badge.partial { border-color: var(--series-2); color: var(--series-2); }

.chart { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin: 1rem 0; overflow-x: auto; }
.chart figcaption { color: var(--muted); font-size: 0.82rem; margin-top: 0.5rem; }
.legend { display: flex; gap: 1.25rem; flex-wrap: wrap; color: var(--ink-2); font-size: 0.82rem; margin: 0.25rem 0 0.5rem; align-items: center; }
.legend .key { display: inline-flex; align-items: center; gap: 0.4rem; }
.swatch { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.swatch.hollow { background: transparent; border: 2px solid currentColor; }
.swatch.filled { background: currentColor; }
.tickmark { width: 2px; height: 14px; background: var(--ink); display: inline-block; }

/* raincloud board rows */
.board { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; margin: 1rem 0; overflow: hidden; }
.board-row {
  display: grid;
  grid-template-columns: 2.2rem minmax(9rem, 16rem) minmax(220px, 1fr) 3.6rem 3.2rem 3.6rem 1.4rem;
  align-items: center; gap: 0.5rem; padding: 0.3rem 0.75rem;
  border-top: 1px solid var(--grid);
}
.board-row.entry { cursor: pointer; }
.board-row.entry:hover { background: color-mix(in srgb, var(--series-1) 6%, transparent); }
.board-row.entry:focus-visible { outline: 2px solid var(--series-1); outline-offset: -2px; }
.board-head { border-top: none; color: var(--ink-2); font-size: 0.78rem; padding-top: 0.5rem; }
.board-head .axis-label { display: block; font-size: 0.72rem; color: var(--muted); }
.board-row .rk { color: var(--muted); font-variant-numeric: tabular-nums; }
.board-row .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.92rem; }
.board-row .nm .badge { margin-left: 0.4rem; }
.board-row .num { text-align: right; font-variant-numeric: tabular-nums; font-size: 0.9rem; }
.board-row .caret { color: var(--muted); }
.board-row .spark { display: block; }
.board-row .strip-slot, .board-head .strip-slot { overflow: hidden; min-width: 0; }
.board-detail { border-top: 1px dashed var(--grid); padding: 0.5rem 0.9rem 0.9rem; }
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0.15rem 1.25rem; margin: 0.5rem 0 0; font-size: 0.85rem;
}
.stats-grid dt { color: var(--muted); float: left; margin-right: 0.5rem; }
.stats-grid dd { margin: 0; font-variant-numeric: tabular-nums; }
.harness-note { color: var(--ink-2); font-size: 0.85rem; margin: 0.5rem 0 0; }
.curve-key {
  display: inline-block; width: 18px; height: 10px;
  background: color-mix(in srgb, currentColor 15%, transparent);
  border-top: 2px solid currentColor; border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}
.table-view { margin: 0.5rem 0 1.5rem; }
.table-view summary { color: var(--ink-2); font-size: 0.85rem; cursor: pointer; }

@media (max-width: 700px) {
  .board-row { grid-template-columns: 1.6rem minmax(6rem, 1fr) minmax(140px, 1.2fr) 3rem 1.2rem; }
  .board-row .num.med, .board-row .num.exit { display: none; }
}

.annex-list li { margin: 0.4rem 0; }
.annex-list .pending { color: var(--muted); }
figure { margin: 1rem 0; }
figure img { max-width: 100%; border: 1px solid var(--border); border-radius: 6px; }
/* The run-trace SVG draws dark strokes on a transparent ground — give it a
   white card so its step numbers stay legible in dark mode. */
figure img[src$=".svg"] { background: #ffffff; padding: 8px; }
.methodology-body h2 { border-bottom: 1px solid var(--grid); padding-bottom: 0.25rem; }
.methodology-body code { background: var(--surface); border: 1px solid var(--grid); border-radius: 4px; padding: 0 0.25rem; }