/*
  stabrank landing page.

  Palette: warm-dark Boards-of-Canada-ish background, amber and gold
  on cream. Modeled on the BoC "Inferno" / Hexagon Sun palette.
*/

:root {
  --bg: #100804;          /* very dark warm: near-black with a brown bias */
  --bg-alt: #1a0e08;
  --surface: #221408;
  --border: #3d2818;
  --text: #f4ede2;        /* warm cream */
  --text-muted: #a89578;  /* warm tan-gray */
  --primary: #f5a523;     /* BoC amber */
  --primary-soft: #f5a52322;
  --accent: #facc15;      /* BoC gold */
  --danger: #c2351a;      /* warm vintage red */
}

*, *::before, *::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

/*
  Type: matches boardsofcanada.com - ITC Avant Garde Gothic Pro at
  light weights (300/400) with tight (negative) letter-spacing.
  Jost is the closest free Google Font in the Avant Garde Gothic
  family; system Century Gothic and Apple Gothic are reasonable
  fallbacks for the BoC-faithful geometric-sans glyphs.
*/
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Jost", "ITC Avant Garde Gothic",
               "Century Gothic", CenturyGothic, AppleGothic,
               -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  font-weight: 400;
  letter-spacing: -0.005em;
}

a { color: var(--primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent); }

header.site,
footer.site {
  max-width: 980px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem;
}

header.site {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

footer.site {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}
footer.site a { color: var(--text-muted); border-bottom: 1px dotted var(--text-muted); }

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
}

.brand-mark { width: 44px; height: 44px; display: block; }
.brand-name {
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  color: var(--primary);
  line-height: 1;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero {
  padding: 3rem 0 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(1.85rem, 4vw + 0.5rem, 2.85rem);
  line-height: 1.1;
  margin: 0 0 1rem 0;
  font-weight: 400;
  letter-spacing: -0.03em;
  color: var(--text);
}

.lede {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 0 1.75rem 0;
}
.lede code { color: var(--primary); }

.hero-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: all .15s;
}
.btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #1a0d04;
  font-weight: 600;
}
.btn.primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a0d04;
}

.section {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: 1.65rem;
  margin: 0 0 0.5rem 0;
  font-weight: 400;
  letter-spacing: -0.025em;
  color: var(--text);
}

.section h3.t {
  font-size: 0.78rem;
  margin: 1.75rem 0 0.75rem 0;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-lede {
  color: var(--text-muted);
  max-width: 760px;
  margin: 0.25rem 0 1.25rem 0;
  font-size: 0.97rem;
}

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

thead th {
  text-align: left;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}
tbody th {
  text-align: left;
  font-weight: 600;
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--border);
  color: var(--primary);
}
tbody td {
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
tbody tr:last-child th,
tbody tr:last-child td { border-bottom: none; }
tbody td b {
  color: #1a0d04;
  background: var(--primary);
  padding: 0.05rem 0.4rem;
  border-radius: 3px;
  font-weight: 700;
}

a.cite {
  display: inline;
  font-size: 0.7rem;
  color: var(--text-muted);
  border-bottom: 1px dotted transparent;
  margin-left: 0.15em;
  vertical-align: super;
  line-height: 0;
}
a.cite:hover { color: var(--accent); border-bottom-color: var(--accent); }

.src-key {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

ol.references {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: ref;
}
ol.references li {
  counter-increment: ref;
  padding: 0.6rem 0 0.6rem 2.2rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  color: var(--text);
  font-size: 0.95rem;
}
ol.references li::before {
  content: "[" counter(ref) "]";
  position: absolute;
  left: 0;
  top: 0.6rem;
  color: var(--primary);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
ol.references li:last-child { border-bottom: none; }
ol.references li:target {
  background: var(--primary-soft);
  border-radius: 4px;
}
ol.references li i { color: var(--text); }
ol.references li a {
  color: var(--text-muted);
  border-bottom: 1px dotted var(--text-muted);
}
ol.references li a:hover { color: var(--accent); border-bottom-color: var(--accent); }

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0.75rem 0 1rem 0;
}
pre code {
  font-family: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono",
               Menlo, Consolas, monospace;
  color: var(--text);
}
code { font-family: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace; }

.math {
  font-family: "iA Writer Quattro", "Charter", Georgia, serif;
  font-style: italic;
  letter-spacing: 0.01em;
}

@media (max-width: 640px) {
  header.site { flex-direction: column; align-items: flex-start; }
}