/* primer-ai.org — Light Academic design system.
   Palette and type per docs/superpowers/specs/2026-06-12-primer-ai-org-website-design.md.
   No webfonts, no imports — zero external requests by design. */

:root {
  --parchment: #fdfcf8;
  --card: #ffffff;
  --ink: #1a2032;
  --muted: #555c6e;
  --navy: #1a2b5c;
  --navy-deep: #14224a;
  --gold: #8a6d1f;
  --gold-bright: #d4af37;
  --hairline: #e8e4d8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--parchment);
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 17px;
  line-height: 1.65;
}

img { max-width: 100%; height: auto; }

a { color: var(--navy); }
a:hover { color: var(--gold); }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.prose { max-width: 70ch; }
.prose p { margin: 0 0 1em; }

/* ---------- header ---------- */

.site-header { border-bottom: 1px solid var(--hairline); }

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.05rem;
}

.brand-mark { width: 34px; height: 34px; border-radius: 50%; }

.site-nav { display: flex; gap: 22px; flex-wrap: wrap; }

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--navy);
  border-bottom-color: var(--gold-bright);
}

/* ---------- typography helpers ---------- */

.eyebrow {
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin: 0 0 10px;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.9rem);
  line-height: 1.15;
  font-weight: normal;
  margin: 0 0 14px;
}

h2 { font-size: 1.6rem; font-weight: normal; margin: 0 0 16px; }
h3 { font-size: 1.15rem; font-weight: normal; margin: 0 0 8px; }

.lede { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }

.citation {
  font-size: 0.88rem;
  color: var(--muted);
  border-left: 3px solid var(--gold-bright);
  padding-left: 14px;
  margin: 1.2em 0;
}

/* ---------- hero (landing) ---------- */

.hero { text-align: center; padding: 72px 24px 64px; }

.hero .emblem {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--gold-bright);
  margin-bottom: 26px;
}

.hero h1 { margin-bottom: 8px; }
.hero .lede { margin: 18px auto 30px; }

.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 13px 28px;
  border-radius: 2px;
}

.btn:hover { background: var(--navy-deep); color: #fff; }

.btn-outline { background: transparent; color: var(--navy); border: 1px solid var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* ---------- sections ---------- */

.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--hairline); }

/* page hero for subpages */
.page-hero { padding: 56px 0 16px; }

/* ---------- card grids ---------- */

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.prose + .grid { margin-top: 24px; }

.card {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-top: 3px solid var(--navy);
  padding: 22px;
}

.card h3 { color: var(--navy); }
.card p { margin: 0; font-size: 0.95rem; color: var(--muted); }

/* ---------- evidence band ---------- */

.band { background: var(--navy); color: #f0e6d2; }
.band .eyebrow { color: var(--gold-bright); }
.band h2 { color: #fff; }
.band a { color: var(--gold-bright); }
.band .section-pad { padding-top: 56px; padding-bottom: 56px; }

.stats {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-top: 28px;
}

.stat-num { font-size: 1.9rem; color: var(--gold-bright); line-height: 1.2; }
.stat-label { font-size: 0.92rem; color: #c7d0e8; margin-top: 6px; }

/* ---------- explore cards ---------- */

.explore-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--hairline);
  padding: 22px;
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.explore-card:hover { border-color: var(--gold-bright); }
.explore-card h3 { color: var(--navy); }
.explore-card p { color: var(--muted); font-size: 0.95rem; margin: 0 0 10px; }
.explore-card .go { color: var(--gold); font-size: 0.85rem; letter-spacing: 1px; text-transform: uppercase; }

/* ---------- roadmap ---------- */

.badge {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 2px;
  vertical-align: middle;
  margin-left: 10px;
}

.badge-done { background: #e4efe4; color: #2e5d2e; border: 1px solid #bcd6bc; }
.badge-progress { background: #fdf3dc; color: #80651d; border: 1px solid #ecd9a4; }
.badge-ahead { background: #eef0f5; color: #555c6e; border: 1px solid #d8dce6; }

.phase {
  background: var(--card);
  border: 1px solid var(--hairline);
  padding: 24px;
  margin-bottom: 18px;
}

.phase h3 { color: var(--navy); }
.phase ul { margin: 12px 0 0; padding-left: 20px; color: var(--muted); font-size: 0.97rem; }
.phase li { margin-bottom: 4px; }

.milestone {
  display: flex;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px dotted var(--hairline);
}

.milestone time { color: var(--gold); white-space: nowrap; font-size: 0.92rem; }
.milestone p { margin: 0; }

/* ---------- vision page figure ---------- */

.figure { margin: 2em 0; text-align: center; }
.figure img { max-width: 420px; width: 100%; border: 1px solid var(--hairline); border-radius: 8px; }
.figure figcaption { font-size: 0.85rem; color: var(--muted); margin-top: 10px; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--hairline);
  margin-top: 56px;
  padding: 36px 24px 44px;
  text-align: center;
}

.site-footer p { margin: 0 0 8px; }
.fineprint { font-size: 0.85rem; color: var(--muted); }

/* ---------- responsive ---------- */

@media (max-width: 720px) {
  .hero { padding: 48px 16px 40px; }
  .section { padding: 40px 0; }
  .page-hero { padding: 40px 0 8px; }
}