:root {
  --bg: #0b1020;
  --card: #131a2e;
  --text: #eef2ff;
  --muted: #b6c0e0;
  --accent: #6ea8fe;
  --border: rgba(255,255,255,0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: linear-gradient(180deg, #0b1020, #111831);
  color: var(--text);
}
.container { width: min(1100px, 92%); margin: 0 auto; }
.site-header, .site-footer { border-bottom: 1px solid var(--border); }
.site-footer { border-top: 1px solid var(--border); border-bottom: 0; margin-top: 48px; }
.nav {
  display: flex; justify-content: space-between; align-items: center; padding: 18px 0;
}
.nav nav a, .brand, .back-link { color: var(--text); text-decoration: none; margin-left: 18px; }
.brand { font-weight: 700; margin-left: 0; }
.hero { padding: 72px 0 36px; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.85rem; }
.hero h1 { font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.1; margin: 12px 0; }
.hero-text, .disclaimer { color: var(--muted); max-width: 760px; }
.section { padding: 28px 0; }
.section-head { margin-bottom: 18px; }
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.product-card, .product-detail, .cart-summary, .cart-row {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  backdrop-filter: blur(10px);
}
.product-card img, .product-detail img {
  width: 100%;
  border-radius: 14px;
  display: block;
}
.product-card h3 { margin-bottom: 6px; }
.price { font-weight: 700; }
.muted { color: var(--muted); }
.btn-primary, .btn-secondary {
  display: inline-block;
  border: 0;
  border-radius: 12px;
  padding: 10px 16px;
  cursor: pointer;
  text-decoration: none;
  margin-top: 12px;
}
.btn-primary { background: var(--accent); color: #08101f; font-weight: 700; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.product-detail {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
}
.cart-items { display: grid; gap: 12px; margin: 20px 0; }
.cart-row { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.checkout-message { color: #9ee6a8; }
@media (max-width: 760px) {
  .product-detail { grid-template-columns: 1fr; }
}