/* Saqrid Learn glossary. Palette = saqrid.com homepage "glow theme" tokens. */
:root {
  --bg: #04070f;
  --bg-deep: #01030a;
  --bg-surface: #0B1120;
  --bg-elevated: #111A2E;
  --border: #1E2A42;
  --gold: #f5c542;
  --gold-bright: #fff0b8;
  --gold-dim: #c99a2e;
  --blue-bright: #a9d4ff;
  --text: #f1f4fa;
  --muted: #c8cfdc;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { background: var(--bg-deep); }
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  color: var(--text);
  background:
    radial-gradient(60% 40% at 15% 0%, rgba(90, 169, 255, 0.10), transparent 70%),
    radial-gradient(50% 35% at 90% 5%, rgba(245, 197, 66, 0.08), transparent 70%),
    var(--bg-deep);
  min-height: 100vh;
}
a { color: var(--gold); text-underline-offset: 3px; }
a:hover { color: var(--gold-bright); }
a:focus-visible, input:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 3px; border-radius: 3px; }

.skip { position: absolute; left: 12px; top: -48px; padding: 8px 14px; background: var(--gold); color: #01030a; font-weight: 600; z-index: 20; border-radius: 4px; }
.skip:focus { top: 12px; color: #01030a; }

/* ---- header (mirrors homepage nav) ---- */
.site-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: 20px 44px; border-bottom: 1px solid var(--border); }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 26px; height: 33px; object-fit: contain; }
.brand span { font-size: 15px; font-weight: 600; letter-spacing: 5px; color: var(--gold); }
.site-nav { display: flex; flex-wrap: wrap; gap: 6px 26px; }
.site-nav a { font-size: 11px; font-weight: 500; letter-spacing: 2.5px; text-transform: uppercase; color: var(--text); text-decoration: none; padding: 4px 0; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--gold-bright); }
.site-nav a[aria-current="page"] { border-bottom: 1px solid var(--gold); }

/* ---- layout ---- */
.wrap { max-width: calc(68ch + 40px); margin: 0 auto; padding: 28px 20px 56px; }
.wrap.wide { max-width: 1100px; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0 0 26px; font-size: 13px; color: var(--muted); }
.crumbs li + li::before { content: "\203A"; margin-right: 6px; color: var(--gold-dim); }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--gold-bright); }

h1 { font-size: clamp(30px, 4.4vw, 42px); font-weight: 300; letter-spacing: 0.5px; line-height: 1.2; margin: 0 0 12px; color: #fff; }
h2 { font-size: 22px; font-weight: 500; color: var(--gold); margin: 40px 0 10px; letter-spacing: 0.3px; }
h3 { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 2.5px; color: var(--muted); margin: 22px 0 8px; }
p, li { color: var(--text); }
.eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: 3px; color: var(--gold); margin: 0 0 8px; }
.aka { font-size: 14px; color: var(--muted); margin: 0 0 14px; }
.lede { font-size: 19px; color: var(--muted); margin: 0 0 8px; }
ul { padding-left: 1.2em; }
li { margin: 6px 0; }
code { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 0.9em; }
.formula { background: var(--bg-surface); border: 1px solid var(--border); border-left: 3px solid var(--gold-dim); border-radius: 6px; padding: 12px 16px; overflow-x: auto; }
.formula code { white-space: pre-wrap; color: var(--gold-bright); line-height: 1.8; }
sub, sup { font-size: 0.72em; }

.s-saqrid { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 10px; padding: 4px 22px 14px; margin-top: 40px; }
.s-saqrid h2 { margin-top: 18px; }
.related, .idx ul { list-style: none; padding: 0; margin: 10px 0 0; }
.related li, .idx li { border-top: 1px solid var(--border); padding: 12px 2px; margin: 0; display: flex; flex-direction: column; gap: 2px; }
.related a, .idx a { font-weight: 500; text-decoration: none; }
.related a:hover, .idx a:hover { text-decoration: underline; }
.related span, .idx li span { font-size: 14px; color: var(--muted); }
.back { margin-top: 36px; }

/* ---- hub ---- */
.filter { margin: 22px 0 6px; }
.filter label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 2.5px; color: var(--muted); margin-bottom: 6px; }
.filter input { width: 100%; max-width: 480px; font: inherit; color: var(--text); background: var(--bg-surface); border: 1px solid var(--border); border-radius: 6px; padding: 10px 14px; }
.filter input::placeholder { color: #8f98aa; }
.count { font-size: 13px; color: var(--muted); margin: 6px 0 0; }
.idx-group { margin-top: 10px; }
.idx-group h2 { border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.idx-cat ul { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); column-gap: 28px; }
[hidden] { display: none !important; }
.note { font-size: 14px; color: var(--muted); margin-top: 40px; }

/* ---- footer (mirrors homepage) ---- */
.site-foot { max-width: 1440px; margin: 0 auto; padding: 30px 44px 40px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot-brand { font-size: 12px; letter-spacing: 2.5px; color: var(--gold); }
.foot-links { display: flex; flex-wrap: wrap; gap: 22px; }
.foot-links a, .site-foot p { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); text-decoration: none; margin: 0; }
.foot-links a:hover, .foot-links a:focus-visible { color: var(--gold); }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .site-head, .site-foot { padding: 16px 20px; }
  .site-nav { gap: 4px 16px; }
  .idx-cat ul { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }
@media print { .site-head, .site-foot, .skip, .filter { display: none; } body { background: #fff; color: #000; } p, li { color: #000; } }