/* =============================================================
   TYPOGRAPHY.CSS — HS108 Design System
   Font imports · Type scale · Type utility classes
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500&family=Genos:ital,wght@0,400;0,700;1,400;1,700&family=Michroma&family=Rajdhani:wght@300;400;500;600;700&family=IBM+Plex+Serif:ital,wght@0,400;0,500;0,600;1,400;1,500&display=swap');

/* ── Type classes ───────────────────────────────────────────── */

.t-hero {
  font-family: var(--font-display);
  font-size: var(--size-hero);
  font-weight: 400;
  font-style: italic;
  line-height: 0.92;
  letter-spacing: -0.01em;
}

.t-hero-upright {
  font-family: var(--font-display);
  font-size: var(--size-hero);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.01em;
}

.t-h1 {
  font-family: var(--font-display);
  font-size: var(--size-h1);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.01em;
}

.t-h2 {
  font-family: var(--font-display);
  font-size: var(--size-h2);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.005em;
}

.t-h3 {
  font-family: var(--font-display);
  font-size: var(--size-h3);
  font-weight: 400;
  line-height: 1.2;
}

.t-body {
  font-family: var(--font-body);
  font-size: var(--size-body);
  font-weight: 400;
  line-height: 1.65;
}

.t-large {
  font-family: var(--font-body);
  font-size: clamp(17px, 1.8vw, 22px);
  font-weight: 400;
  line-height: 1.5;
}

.t-label {
  font-family: var(--font-mono);
  font-size: var(--size-label);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.t-mono {
  font-family: var(--font-mono);
  font-size: var(--size-small);
  font-weight: 400;
  line-height: 1.5;
}

/* ── Prose content (for markdown bodies) ───────────────────── */
.prose {
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: 1.75;
  max-width: 68ch;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: var(--size-h2);
  font-weight: 400;
  font-style: italic;
  line-height: 1.1;
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.prose h3 {
  font-family: var(--font-display);
  font-size: var(--size-h3);
  font-weight: 400;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.prose p { margin-bottom: 1.4rem; opacity: 0.85; }

.prose p:last-child { margin-bottom: 0; }

.prose strong { font-weight: 600; opacity: 1; }

.prose em { font-style: italic; }

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition), background var(--transition);
}

.prose a:hover {
  background: var(--accent);
  color: var(--black-native);
  text-decoration: none;
  padding: 0 2px;
}

.prose blockquote {
  border-left: var(--border-width) solid var(--accent-strong);
  padding-left: 1.5rem;
  margin-block: 2rem;
  opacity: 0.75;
  font-style: italic;
  font-family: var(--font-display);
  font-size: clamp(18px, 1.8vw, 22px);
}

.prose ul, .prose ol {
  padding-left: 0;
  margin-bottom: 1.4rem;
}

.prose ul li, .prose ol li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.5rem;
  list-style: none;
}

.prose ul li::before {
  content: '›';
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  opacity: 0.4;
  top: 5px;
}

.prose ol { counter-reset: item; }
.prose ol li::before {
  content: counter(item, decimal-leading-zero);
  counter-increment: item;
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  opacity: 0.4;
  top: 5px;
}

.prose hr {
  border: none;
  border-top: var(--border-width) solid var(--border);
  margin-block: 3rem;
  opacity: 0.25;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--surface-elevated);
  border: 1px solid rgba(0,0,0,0.08);
  padding: 2px 6px;
}

.prose pre {
  background: var(--black-native);
  color: var(--text-on-dark);
  padding: 1.5rem;
  overflow-x: auto;
  margin-block: 2rem;
  border-radius: 0;
}

.prose pre code { background: none; border: none; padding: 0; color: inherit; }