/* ============================================
   DESIGN SYSTEM — Undefined Collectibles
   Editorial Collector's Journal
   ============================================ */

/* Typography: Newsreader for body, preserving Special Gothic Condensed One for display */
@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,300;0,6..72,400;0,6..72,500;0,6..72,600;0,6..72,700;1,6..72,400;1,6..72,500&display=swap');

:root {
  /* ── Palette ── */
  --ds-gold: #D4AF37;
  --ds-gold-light: #e8cc6e;
  --ds-gold-dim: rgba(212, 175, 55, 0.12);
  --ds-gold-glow: rgba(212, 175, 55, 0.25);
  --ds-accent: #c8963e;
  --ds-slate-900: #1a202c;
  --ds-slate-800: #2d3748;
  --ds-slate-700: #4a5568;
  --ds-slate-500: #718096;
  --ds-slate-400: #a0aec0;
  --ds-slate-200: #e2e8f0;
  --ds-slate-100: #edf2f7;

  /* Warm paper tones */
  --ds-paper: #faf8f4;
  --ds-paper-warm: #f5f0e8;
  --ds-paper-card: #ffffff;
  --ds-paper-raised: #fffdf9;
  --ds-ink: #2c2c2c;
  --ds-ink-light: #4a5568;
  --ds-ink-muted: #8b95a5;

  /* ── Typography ── */
  --ds-font-display: 'Special Gothic Condensed One', sans-serif;
  --ds-font-body: 'Newsreader', Georgia, 'Times New Roman', serif;
  --ds-font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --ds-font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  /* Fluid type scale (minor third) */
  --ds-text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --ds-text-sm: clamp(0.8125rem, 0.77rem + 0.2vw, 0.875rem);
  --ds-text-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --ds-text-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.25rem);
  --ds-text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --ds-text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --ds-text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  --ds-text-4xl: clamp(2.5rem, 1.75rem + 3.75vw, 4rem);

  --ds-leading-tight: 1.2;
  --ds-leading-snug: 1.35;
  --ds-leading-normal: 1.65;
  --ds-leading-relaxed: 1.8;

  /* ── Spacing (8px base) ── */
  --ds-space-1: 0.25rem;   /* 4 */
  --ds-space-2: 0.5rem;    /* 8 */
  --ds-space-3: 0.75rem;   /* 12 */
  --ds-space-4: 1rem;      /* 16 */
  --ds-space-5: 1.5rem;    /* 24 */
  --ds-space-6: 2rem;      /* 32 */
  --ds-space-8: 3rem;      /* 48 */
  --ds-space-10: 4rem;     /* 64 */
  --ds-space-12: 5rem;     /* 80 */
  --ds-space-16: 8rem;     /* 128 */

  /* ── Radii ── */
  --ds-radius-sm: 6px;
  --ds-radius-md: 10px;
  --ds-radius-lg: 16px;
  --ds-radius-xl: 24px;
  --ds-radius-full: 9999px;

  /* ── Shadows ── */
  --ds-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --ds-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --ds-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --ds-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --ds-shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
  --ds-shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.2);

  /* ── Transitions ── */
  --ds-ease: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ds-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ds-duration-fast: 0.15s;
  --ds-duration-base: 0.3s;
  --ds-duration-slow: 0.5s;

  /* ── Layout ── */
  --ds-max-width: 1280px;
  --ds-max-width-narrow: 800px;
  --ds-max-width-wide: 1400px;
  --ds-gutter: clamp(1rem, 2vw + 0.5rem, 2.5rem);
  --ds-navbar-height: 70px;
}

/* ── Global resets using design tokens ── */
body {
  font-family: var(--ds-font-body);
  font-size: var(--ds-text-base);
  line-height: var(--ds-leading-normal);
  color: var(--ds-ink);
  background-color: var(--ds-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-optical-sizing: auto;
}

/* ── Headings ── */
h1, h2, h3, h4 {
  font-family: var(--ds-font-display);
  line-height: var(--ds-leading-tight);
  color: var(--ds-slate-900);
  letter-spacing: 0.5px;
}

/* ── Prose defaults ── */
p {
  font-family: var(--ds-font-body);
  line-height: var(--ds-leading-normal);
  color: var(--ds-ink-light);
}

/* ── Section divider — gold accent bar ── */
.ds-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--ds-gold), var(--ds-accent));
  border-radius: 2px;
  border: none;
}

.ds-divider--center {
  margin-left: auto;
  margin-right: auto;
}

/* ── Section spacing ── */
.ds-section {
  padding: var(--ds-space-12) 0;
}

.ds-container {
  max-width: var(--ds-max-width);
  margin: 0 auto;
  padding: 0 var(--ds-gutter);
}

.ds-container--narrow {
  max-width: var(--ds-max-width-narrow);
}

.ds-container--wide {
  max-width: var(--ds-max-width-wide);
}

/* ── Cards ── */
.ds-card {
  background: var(--ds-paper-card);
  border: 1px solid var(--ds-slate-200);
  border-radius: var(--ds-radius-lg);
  box-shadow: var(--ds-shadow-sm);
  transition: transform var(--ds-duration-base) var(--ds-ease),
              box-shadow var(--ds-duration-base) var(--ds-ease);
  overflow: hidden;
}

.ds-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ds-shadow-lg);
}

/* ── Section headers ── */
.ds-section-header {
  text-align: center;
  margin-bottom: var(--ds-space-8);
}

.ds-section-title {
  font-size: var(--ds-text-3xl);
  text-transform: uppercase;
  margin: 0 0 var(--ds-space-3) 0;
}

.ds-section-subtitle {
  font-family: var(--ds-font-body);
  font-size: var(--ds-text-lg);
  color: var(--ds-ink-muted);
  font-weight: 400;
  font-style: italic;
  margin: 0;
}

/* ── Subtle paper texture overlay ── */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ── Utility: editorial label ── */
.ds-label {
  font-family: var(--ds-font-ui);
  font-size: var(--ds-text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--ds-ink-muted);
}

/* ── Utility: gold accent text ── */
.ds-gold-text {
  background: linear-gradient(135deg, var(--ds-gold), var(--ds-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .ds-card:hover {
    transform: none;
  }
}