/* billionaires.network — design system */

:root {
  --ink: #0a0a0a;
  --surface: #111111;
  --elevated: #181818;
  --border: #262626;
  --border-strong: #3a3a3a;
  --ivory: #f5f1e8;
  --muted: #9a9590;
  --dim: #6b6862;
  --gold: #c9a961;
  --gold-light: #dcbe7e;
  --gold-dim: #8a7544;
}

html {
  background: var(--ink);
  color: var(--ivory);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01', 'cv02';
}

body {
  background: var(--ink);
  color: var(--ivory);
}

.font-display {
  font-family: 'Playfair Display', 'EB Garamond', Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.font-mono-tab {
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
}

.label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

/* Hero ambient lighting */
.hero-ambient {
  background:
    radial-gradient(ellipse 80% 60% at 50% 100%, rgba(201, 169, 97, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 20% 20%, rgba(201, 169, 97, 0.03) 0%, transparent 60%),
    var(--ink);
}

.section-divider {
  background: linear-gradient(90deg, transparent 0%, var(--border-strong) 50%, transparent 100%);
  height: 1px;
}

.hairline {
  height: 1px;
  background: var(--border);
}

.hairline-gold {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 50%, transparent);
}

/* Buttons */
.btn-gold {
  background: var(--gold);
  color: var(--ink);
  padding: 14px 28px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  transition: all 200ms ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid var(--border-strong);
  color: var(--ivory);
  padding: 13px 27px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  transition: all 200ms ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* Category card */
.cat-card {
  border: 1px solid var(--border);
  background: var(--surface);
  transition: all 240ms ease;
  position: relative;
  overflow: hidden;
}

.cat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201, 169, 97, 0) 0%, rgba(201, 169, 97, 0.04) 100%);
  opacity: 0;
  transition: opacity 240ms ease;
  pointer-events: none;
}

.cat-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-2px);
}

.cat-card:hover::before {
  opacity: 1;
}

.cat-num {
  font-family: 'Playfair Display', serif;
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.1em;
}

.tag-first {
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--gold);
  padding: 3px 7px;
  font-weight: 600;
}

/* Tier card */
.tier-card {
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 40px 32px;
  transition: all 240ms ease;
  position: relative;
}

.tier-card:hover {
  border-color: var(--gold-dim);
}

.tier-card.featured {
  border-color: var(--gold-dim);
  background: linear-gradient(180deg, var(--elevated) 0%, var(--surface) 100%);
}

/* Stat block */
.stat-block {
  border-left: 1px solid var(--border);
  padding-left: 24px;
}

@media (max-width: 768px) {
  .stat-block {
    border-left: none;
    border-top: 1px solid var(--border);
    padding-left: 0;
    padding-top: 16px;
  }
}

/* Listing card */
.listing-card {
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  transition: all 280ms ease;
}

.listing-card:hover {
  border-color: var(--gold-dim);
}

.listing-card .img-wrap {
  overflow: hidden;
}

.listing-card img {
  transition: transform 600ms ease;
  filter: brightness(0.85) saturate(0.92);
}

.listing-card:hover img {
  transform: scale(1.04);
}

/* Verified badge */
.verified-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 500;
  padding: 4px 8px;
  border: 1px solid var(--gold-dim);
  background: rgba(201, 169, 97, 0.06);
}

.verified-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 6px var(--gold);
}

/* Subtle scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--border-strong); }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }

/* Nav scroll behaviour */
.nav-scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

/* Selection */
::selection { background: var(--gold); color: var(--ink); }

/* No transitions until JS hydrates (prevents flash) */
.preload * { transition: none !important; }