/* ============================================
   Resource Hub — Base Design System V2
   Juan Diego Villacis | Dark + Clay-inspired
   ============================================ */

/* --- Reset & Variables --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
::selection { background: rgba(180, 160, 120, 0.3); }
html { scroll-behavior: smooth; }

:root {
  /* Dark foundation */
  --black: #080808;
  --surface: #0e0e0e;
  --surface-up: #151514;
  --surface-card: #1a1a18;
  --surface-elevated: #222220;

  /* Borders */
  --line: rgba(255,255,255,0.06);
  --line-bright: rgba(255,255,255,0.12);
  --line-strong: rgba(255,255,255,0.18);

  /* Text */
  --text: rgba(255,255,255,0.85);
  --text-mid: rgba(255,255,255,0.50);
  --text-dim: rgba(255,255,255,0.25);
  --text-ghost: rgba(255,255,255,0.10);

  /* Accent palette */
  --warm: #b4a078;
  --warm-light: #d4c098;
  --warm-gold: #fbbd41;
  --warm-gold-deep: #d08a11;

  /* Section swatches */
  --canopy-light: #84e7a5;
  --canopy-mid: #078a52;
  --canopy-deep: #0a2e1a;
  --amber-light: #f8cc65;
  --amber-deep: #3d2a08;
  --river-light: #3bd3fd;
  --river-mid: #0089ad;
  --river-deep: #0a1e30;
  --ube-light: #c1b0ff;
  --ube-mid: #43089f;

  /* Shadows (Clay-inspired multi-layer) */
  --shadow-rest: rgba(0,0,0,0.4) 0px 1px 3px, rgba(0,0,0,0.2) 0px -1px 1px inset;
  --shadow-hover: rgba(0,0,0,0.5) 0px 8px 24px, rgba(0,0,0,0.2) 0px -1px 1px inset;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;

  /* Typography */
  --display: 'Cormorant Garamond', Georgia, serif;
  --serif: 'Newsreader', Georgia, serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm: 0.85rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.15rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  /* Layout */
  --max-width: 960px;
  --radius: 12px;
  --radius-lg: 24px;
  --radius-xl: 40px;
}

/* --- Base Typography --- */
body {
  font-family: var(--sans);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--text);
  background: var(--black);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text);
}

h1 {
  font-family: var(--display);
  font-size: var(--font-size-3xl);
  font-weight: 300;
}
h2 {
  font-family: var(--serif);
  font-size: var(--font-size-2xl);
  font-weight: 400;
  font-style: italic;
}
h3 {
  font-family: var(--serif);
  font-size: var(--font-size-xl);
  font-weight: 500;
}
h4 {
  font-family: var(--sans);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

p { margin-bottom: 1em; }

a {
  color: var(--warm);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--warm-light); }

strong { color: var(--text); font-weight: 600; }

/* --- Utility Classes --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.text-center { text-align: center; }
.text-mid { color: var(--text-mid); }
.text-dim { color: var(--text-dim); }
.text-sm { font-size: var(--font-size-sm); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* --- Labels / Badges --- */
.label {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.label--governance { color: var(--canopy-light); }
.label--finance { color: var(--amber-light); }
.label--trade { color: var(--river-light); }
.label--publications { color: var(--ube-light); }

.badge {
  display: inline-block;
  padding: 0.25em 0.75em;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge--governance { background: rgba(132, 231, 165, 0.12); color: var(--canopy-light); }
.badge--finance { background: rgba(248, 204, 101, 0.12); color: var(--amber-light); }
.badge--trade { background: rgba(59, 211, 253, 0.12); color: var(--river-light); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.75em 1.5em;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: var(--font-size-base);
  font-family: var(--sans);
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--warm);
  color: var(--black);
}
.btn--primary:hover {
  background: var(--warm-light);
  color: var(--black);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text-mid);
  border: 1px solid var(--line-bright);
}
.btn--outline:hover {
  border-color: var(--warm);
  color: var(--warm);
}

.btn--ghost {
  background: transparent;
  color: var(--text-mid);
  padding: 0.5em 1em;
}
.btn--ghost:hover {
  color: var(--warm);
}

.btn--small {
  padding: 0.5em 1em;
  font-size: var(--font-size-sm);
}

/* --- Cards (Clay-adapted dark) --- */
.card {
  display: block;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow-rest);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--line-bright);
  color: var(--text);
}
.card:focus-visible {
  outline: 1px solid var(--warm);
  outline-offset: 2px;
}
.card:active { transform: translateY(-1px); }

/* --- Section containers (colored bands) --- */
.section-band {
  padding: 2rem;
}
.section-container {
  max-width: var(--max-width);
  margin: 0 auto;
  border-radius: var(--radius-xl);
  padding: 4rem 3rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --font-size-3xl: 1.8rem;
    --font-size-2xl: 1.5rem;
    --font-size-xl: 1.25rem;
  }
  .container { padding: 0 var(--space-sm); }
  .section-container { padding: 2.5rem 1.5rem; border-radius: var(--radius-lg); }
  .section-band { padding: 1rem 1.25rem; }
  .card { border-radius: 16px; padding: 1.25rem 1.5rem; }
}

@media (max-width: 480px) {
  :root {
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.3rem;
  }
}