/* Shared look for the pages list and the test cases. */
:root {
  --canvas: #f6f5f2;
  --card: #ffffff;
  --chip: #efeee9;
  --ink: #17191c;
  --muted: #63666b;
  --border: #e3e1dc;
  --brand: #0f766e;
  --brand-soft: #e3f2f0;
  --on-brand: #ffffff;
  --warn: #b45309;
  --warn-soft: #fdf1e3;
  --ux: #4f46e5;
  --ux-soft: #eceafd;
  --sec: #b91c1c;
  --sec-soft: #fbe9e9;
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --canvas: #121416;
    --card: #1b1e21;
    --chip: #24282c;
    --ink: #eceae6;
    --muted: #a3a6aa;
    --border: #2d3135;
    --brand: #2dd4bf;
    --brand-soft: #13302d;
    --on-brand: #06201d;
    --warn: #fbbf24;
    --warn-soft: #33270f;
    --ux: #a5b4fc;
    --ux-soft: #23264a;
    --sec: #f87171;
    --sec-soft: #3a1c1c;
  }
}
:root[data-theme="dark"] {
  --canvas: #121416;
  --card: #1b1e21;
  --chip: #24282c;
  --ink: #eceae6;
  --muted: #a3a6aa;
  --border: #2d3135;
  --brand: #2dd4bf;
  --brand-soft: #13302d;
  --on-brand: #06201d;
  --warn: #fbbf24;
  --warn-soft: #33270f;
  --ux: #a5b4fc;
  --ux-soft: #23264a;
  --sec: #f87171;
  --sec-soft: #3a1c1c;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 16px/1.5 Outfit, system-ui, sans-serif;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
[hidden] { display: none !important; }

/* Top bar: site switch (pages / test cases) and where links open. */
.bar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--canvas) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.bar-in {
  max-width: 1040px; margin: 0 auto; padding: 10px 16px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 20px;
}
.brand { font-weight: 600; font-size: 18px; margin-inline-end: auto; text-decoration: none; }
.nav { display: flex; gap: 4px; }
.nav a {
  font-size: 15px; font-weight: 600; text-decoration: none; color: var(--muted);
  padding: 6px 14px; min-height: 36px; display: inline-flex; align-items: center; border-radius: 999px;
}
.nav a:hover { color: var(--ink); background: var(--chip); }
.nav a[aria-current="page"] { color: var(--ink); background: var(--chip); }

.seg { display: inline-flex; background: var(--card); border: 1px solid var(--border); border-radius: 999px; padding: 3px; gap: 2px; }
.seg button {
  font: inherit; font-size: 14px; font-weight: 600; border: 0; border-radius: 999px; padding: 4px 14px;
  min-height: 32px; background: transparent; color: var(--muted); cursor: pointer;
}
.seg button:hover { color: var(--ink); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--canvas); }

.wrap { max-width: 1040px; margin: 0 auto; padding: 28px 16px 80px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 6px; font-weight: 600; }
.lead { color: var(--muted); margin: 0 0 20px; }

/* Filter chips (single or multi select). */
.filters { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 28px; }
.filters .label { font-size: 14px; color: var(--muted); margin-inline-end: 4px; }
.chip {
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  min-height: 36px; padding: 6px 14px; border-radius: 999px;
  background: var(--card); color: var(--ink); border: 1px solid var(--border);
}
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--canvas); border-color: var(--ink); }
.chip .n { font-weight: 400; opacity: .7; margin-inline-start: 4px; }

.part { margin-bottom: 56px; }
.part-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; margin-bottom: 16px; }
.part-head h2 { font-size: 24px; line-height: 1.3; margin: 0; font-weight: 600; }
.total { font-size: 15px; color: var(--muted); }

/* Version links: one square per style. */
.versions { display: flex; gap: 6px; flex-shrink: 0; }
.v {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
  background: var(--brand-soft); color: var(--ink); font-weight: 600; font-size: 14px; text-decoration: none;
  border: 1px solid transparent; transition: border-color .15s, background .15s;
}
.v:hover { border-color: var(--brand); background: var(--card); }

.status { flex-shrink: 0; font-size: 12px; font-weight: 600; border-radius: 999px; padding: 2px 10px; border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.status.picked { border-color: var(--brand); color: var(--brand); }
.status.live { background: var(--brand); border-color: var(--brand); color: var(--on-brand); }

@media (max-width: 480px) {
  h1 { font-size: 26px; }
  .brand { width: 100%; }
}