/* ============================================================
   UnderstandSEO Design Tokens
   Three palette families. Pick one per site based on brand archetype.
   Override --accent HSL hue with the actual brand color extracted
   from logo/photography/signage during Phase 2 research.
   ============================================================ */

:root {
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 1rem;
  --space-4: 1.5rem; --space-5: 2rem; --space-6: 3rem;
  --space-7: 5rem; --space-8: 8rem;

  --radius-sm: 0.25rem; --radius: 0.5rem; --radius-lg: 1rem;
  --radius-pill: 9999px;

  --max-w: 1200px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 24px 48px -12px rgba(0,0,0,0.18);
}

/* PALETTE 1: WARM — restaurants, hospitality, family business
   Reference: Hudson Kitchen. Body: refined sans. Display: warm serif. */
.palette-warm {
  --bg: #FBF7F1; --surface: #FFFFFF; --surface-2: #F4EDE2;
  --ink: #1F1A14; --ink-2: #4A4238; --ink-3: #7A7166;
  --rule: #E5DCC8;
  --accent: hsl(22 78% 48%);
  --accent-soft: hsl(22 78% 92%);
  --accent-ink: hsl(22 78% 22%);
  --highlight: #F2C94C;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --hero-display-size: clamp(2.75rem, 7vw, 5.5rem);
  --h2-size: clamp(2rem, 4.5vw, 3.25rem);
  --body-size: 1.0625rem;
}

/* PALETTE 2: MODERN — professional services, B2B, agencies
   Reference: Futureform, Clear Street. */
.palette-modern {
  --bg: #FFFFFF; --surface: #FAFAF7; --surface-2: #0E0E0C;
  --ink: #0E0E0C; --ink-2: #3A3A36; --ink-3: #6E6E68;
  --rule: #E8E8E2;
  --accent: hsl(220 90% 52%);
  --accent-soft: hsl(220 60% 95%);
  --accent-ink: hsl(220 90% 18%);
  --highlight: #D6FF3D;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Geist', 'Inter', system-ui, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, monospace;
  --hero-display-size: clamp(3rem, 8vw, 6.5rem);
  --h2-size: clamp(2rem, 4.5vw, 3.5rem);
  --body-size: 1.0625rem;
}

/* PALETTE 3: CIVIC — government, churches, schools, healthcare
   AAA contrast targets, not just AA. */
.palette-civic {
  --bg: #FFFFFF; --surface: #F5F2EC; --surface-2: #14202E;
  --ink: #14202E; --ink-2: #34465B; --ink-3: #647488;
  --rule: #D8D3C7;
  --accent: hsl(200 65% 32%);
  --accent-soft: hsl(200 35% 92%);
  --accent-ink: hsl(200 65% 18%);
  --highlight: #B8860B;
  --font-display: 'Source Serif 4', 'Charter', Georgia, serif;
  --font-body: 'Source Sans 3', 'Atkinson Hyperlegible', system-ui, sans-serif;
  --font-mono: 'Source Code Pro', ui-monospace, monospace;
  --hero-display-size: clamp(2.5rem, 6vw, 4.75rem);
  --h2-size: clamp(1.875rem, 4vw, 2.75rem);
  --body-size: 1.125rem;
}

/* Base styles */
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: var(--body-size);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}
h1, h2, h3, h4 {
  font-family: var(--font-display); color: var(--ink);
  line-height: 1.05; letter-spacing: -0.02em; margin: 0;
  font-weight: 500;
}
h1 { font-size: var(--hero-display-size); }
h2 { font-size: var(--h2-size); }
h3 { font-size: 1.5rem; font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-ink); }
::selection { background: var(--accent); color: var(--bg); }

.display-italic {
  font-style: italic; font-weight: 400; color: var(--accent-ink);
}

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.875rem 1.5rem; border-radius: var(--radius-pill);
  font-family: var(--font-body); font-weight: 500; font-size: 1rem;
  transition: transform 120ms ease, background 120ms ease, color 120ms ease;
  white-space: nowrap; cursor: pointer; border: none;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--accent); color: var(--bg); }
.btn-secondary { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
.btn-secondary:hover { background: var(--ink); color: var(--bg); }
.btn-accent { background: var(--accent); color: var(--bg); }
.btn-accent:hover { background: var(--accent-ink); color: var(--bg); }

.container-prose {
  max-width: var(--max-w); margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.8125rem;
  font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow::before {
  content: ""; display: inline-block;
  width: 1.5rem; height: 1px; background: currentColor; opacity: 0.5;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0; transform: translateY(12px);
    animation: reveal 700ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  }
  .reveal:nth-child(2) { animation-delay: 80ms; }
  .reveal:nth-child(3) { animation-delay: 160ms; }
  .reveal:nth-child(4) { animation-delay: 240ms; }
  .reveal:nth-child(5) { animation-delay: 320ms; }
  @keyframes reveal { to { opacity: 1; transform: translateY(0); } }
}