/* ============================================================
   Jeff Skarin — Shared Design Tokens & Base Styles
   Brand book: /Brand book/jeffskarin-brand-book.md
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Outfit:wght@400;500&display=swap');

/* ── 1. Design tokens ── */
:root {
  /* Primary — Deep Slate Blue */
  --color-primary-dark:  #253748;
  --color-primary:       #364d63;
  --color-primary-mid:   #4d6882;
  --color-primary-tint:  #bfccd9;
  --color-primary-mist:  #e8edf2;

  /* Secondary — Sandy Orange */
  --color-accent-dark:   #c97c3d;
  --color-accent:        #F4A261;
  --color-accent-light:  #f7bc8a;
  --color-accent-tint:   #fdeedd;

  /* Neutrals */
  --color-ink:           #1e2d3a;
  --color-charcoal:      #3d4c5a;
  --color-graphite:      #5a6872;
  --color-stone:         #9aadb8;
  --color-mist:          #d0dce5;
  --color-background:    #EEF2F5;
  --color-cloud:         #f5f7f9;
  --color-white:         #ffffff;

  /* Restricted — subsidiary pages only, requires express permission */
  --color-chip-violet:   #553c73;
  --color-chip-forest:   #3d6b4f;
  --color-chip-brick:    #7a3d3d;

  /* Typography */
  --font-heading: 'Libre Baskerville', 'Baskerville', 'Palatino Linotype', Georgia, serif;
  --font-body:    'Outfit', system-ui, sans-serif;

  /* Spacing — 4px base unit */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-6:  24px;
  --space-8:  32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
}

/* ── 2. Base reset ── */
*, *::before, *::after {
  box-sizing: border-box;
}

/* ── 3. Base body ── */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  margin: 0;
}

/* ── 4. Site chrome — opt-in via .site-chrome on <body> ──
   Adds the 3px brand accent bar and noise texture overlay.
   Apply to pages that are part of the main site shell. */
.site-chrome::before {
  content: '';
  display: block;
  height: 3px;
  background: var(--color-primary);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
}

.site-chrome::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 998;
  pointer-events: none;
  background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n' x='0' y='0'><feTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/></filter><rect width='200' height='200' filter='url(%23n)' opacity='0.12'/></svg>");
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* ── 5. Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: clamp(2rem, 5vw, 2.25rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.375rem, 3vw, 1.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

h3 {
  font-size: 1.0625rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-primary-mid);
}

p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-ink);
  margin-bottom: var(--space-4);
}

/* ── 6. Buttons ── */
.btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  padding: var(--space-2) 18px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-primary-mid); }

.btn-secondary {
  background: var(--color-accent);
  color: #4a2e10;
}
.btn-secondary:hover { background: var(--color-accent-dark); }

.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}
.btn-ghost:hover { background: var(--color-primary-mist); }

/* ── 7. Cards ── */
.card {
  background: var(--color-white);
  border: 0.5px solid var(--color-mist);
  border-radius: 12px;
  padding: var(--space-6);
}

/* ── 8. Chips ── */
.chip {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  color: var(--color-white);
}

.chip-build    { background: var(--color-primary); }
.chip-research { background: var(--color-accent-dark); }