/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: #ffffff;
  color: #111111;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; }
a { color: inherit; }
img { max-width: 100%; }

/* ── CSS Variables ── */
:root {
  --gold: #c9a84c;
  --gold-dark: #b8962e;
  --bg: #ffffff;
  --bg-card: #f5f5f5;
  --border: #e0e0e0;
  --text: #111111;
  --text-muted: #666666;
  --nav-bg: #111111;
}

/* ── Nav ── */
.nav {
  background: #111111;
  border-bottom: 1px solid #222222;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--gold);
}
.nav-tagline {
  font-size: 13px;
  color: #aaaaaa;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  color: #aaaaaa;
  text-decoration: none;
  transition: color .15s;
}
.nav-links a:hover { color: var(--gold); }
.cart-badge {
  background: var(--gold);
  color: #111111;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 10px;
  margin-left: 4px;
  display: none;
}

/* ── Hero ── */
.hero {
  padding: 80px 24px 60px;
  text-align: center;
  background: #f5f5f5;
  border-bottom: 1px solid var(--border);
}
.hero-eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: 16px;
}
.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(36px, 6vw, 60px);
  font-weight: 700;
  color: #111111;
  margin-bottom: 16px;
  line-height: 1.15;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}
.hero-sub strong { color: var(--gold); }

/* ── Sections ── */
.section { padding: 60px 24px; }
.section-dark { background: #f5f5f5; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.container { max-width: 1100px; margin: 0 auto; }
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  color: #111111;
  margin-bottom: 8px;
  text-align: center;
}
.section-sub {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  margin-bottom: 36px;
}

/* ── Sheet Size Cards ── */
.sheet-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
@media (max-width: 900px) { .sheet-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .sheet-grid { grid-template-columns: repeat(2, 1fr); } }

.sheet-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: border-color .2s, transform .15s;
  display: block;
}
.sheet-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}
.sheet-card-size {
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  font-weight: 700;
  color: #111111;
  margin-bottom: 6px;
}
.sheet-card-dims { font-size: 12px; color: var(--text-muted); margin-bottom: 14px; }
.sheet-card-price {
  font-size: 24px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 14px;
}
.sheet-card-cta {
  font-size: 13px;
  color: var(--text-muted);
  transition: color .15s;
}
.sheet-card:hover .sheet-card-cta { color: var(--gold); }

/* ── Requirements Grid ── */
.req-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 700px) { .req-grid { grid-template-columns: repeat(2, 1fr); } }

.req-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}
.req-icon { font-size: 24px; margin-bottom: 10px; }
.req-title { font-weight: 600; font-size: 14px; color: #111111; margin-bottom: 6px; }
.req-body { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ── Buttons ── */
.btn-primary {
  display: inline-block;
  background: var(--gold);
  color: #111111;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 32px;
  border-radius: 8px;
  text-decoration: none;
  transition: background .15s;
}
.btn-primary:hover { background: var(--gold-dark); }

/* ── Footer ── */
.footer {
  padding: 32px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
  background: #111111;
}
.footer p { color: #888888; font-size: 13px; }
.footer em { color: #aaaaaa; }