/* eCommerce CMS — layout */
.header {
  position: sticky; top: 0; z-index: 50;
  background: var(--c-surface); border-bottom: 1px solid var(--c-border);
  height: var(--header-h);
}
.header-inner { display: flex; align-items: center; gap: var(--sp-5); height: var(--header-h); }
.logo { font-family: var(--font-head); font-weight: 700; font-size: 1.25rem; color: var(--c-ink); }
.logo span { color: var(--c-primary); }
.nav { display: flex; gap: var(--sp-4); flex: 1; }
.nav a { color: var(--c-ink-soft); font-weight: 500; font-size: .9375rem; padding: 8px 4px; }
.nav a:hover { color: var(--c-primary); }
.header-actions { display: flex; align-items: center; gap: var(--sp-3); }
.icon-btn {
  position: relative; width: 44px; height: 44px; border: none; background: transparent;
  border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center;
  color: var(--c-ink-soft); font-size: 1.25rem;
}
.icon-btn:hover { background: var(--c-surface-soft); }
.cart-count {
  position: absolute; top: 4px; right: 4px; min-width: 18px; height: 18px;
  background: var(--c-primary); color: #fff; border-radius: var(--radius-full);
  font-size: .6875rem; font-weight: 700; display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
}
.menu-toggle { display: none; }

/* Mobile nav */
.mobile-nav {
  display: none; position: fixed; inset: 0; background: var(--c-surface); z-index: 100;
  padding: var(--sp-5); flex-direction: column; gap: var(--sp-4);
}
.mobile-nav.open { display: flex; }
.mobile-nav a { font-size: 1.125rem; padding: var(--sp-3) 0; border-bottom: 1px solid var(--c-border); }

/* Footer */
.footer { background: var(--c-ink); color: #cbd5e1; padding: var(--sp-7) 0 var(--sp-5); margin-top: var(--sp-7); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--sp-6); }
.footer h4 { color: #fff; margin-bottom: var(--sp-3); }
.footer a { color: #cbd5e1; display: block; padding: 4px 0; }
.footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #334155; margin-top: var(--sp-6); padding-top: var(--sp-4); text-align: center; font-size: .875rem; }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
  .menu-toggle { display: flex; }
}

/* Hero */
.hero { background: linear-gradient(135deg, var(--c-primary-50), var(--c-surface)); padding: var(--sp-8) 0; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-6); align-items: center; }
.hero h1 { font-size: 2.5rem; margin-bottom: var(--sp-4); }
.hero p { color: var(--c-ink-soft); font-size: 1.125rem; margin-bottom: var(--sp-5); }
@media (max-width: 768px) { .hero-inner { grid-template-columns: 1fr; } .hero h1 { font-size: 1.75rem; } }

/* Breadcrumb */
.breadcrumb { padding: var(--sp-4) 0; font-size: .875rem; color: var(--c-muted); }
.breadcrumb a { color: var(--c-muted); }
.breadcrumb a:hover { color: var(--c-primary); }
.breadcrumb span { margin: 0 6px; }

/* Product detail */
.pd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
.pd-gallery-main { border: 1px solid var(--c-border); border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 1; }
.pd-gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.pd-thumbs { display: flex; gap: var(--sp-2); margin-top: var(--sp-3); }
.pd-thumb { width: 72px; height: 72px; border: 2px solid var(--c-border); border-radius: var(--radius-sm); overflow: hidden; cursor: pointer; }
.pd-thumb.active { border-color: var(--c-primary); }
.pd-thumb img { width: 100%; height: 100%; object-fit: cover; }
.pd-price { font-size: 1.5rem; font-weight: 700; color: var(--c-primary); margin: var(--sp-3) 0; }
.qty-stepper { display: inline-flex; align-items: center; border: 1px solid var(--c-border); border-radius: var(--radius-md); }
.qty-stepper button { width: 44px; height: 44px; border: none; background: transparent; font-size: 1.25rem; }
.qty-stepper input { width: 48px; text-align: center; border: none; height: 44px; font-size: 1rem; }
@media (max-width: 768px) { .pd-grid { grid-template-columns: 1fr; } }

/* Cart */
.cart-table { width: 100%; border-collapse: collapse; }
.cart-table th, .cart-table td { padding: var(--sp-3); border-bottom: 1px solid var(--c-border); text-align: left; }
.cart-table th { font-size: .875rem; color: var(--c-muted); }
.cart-item-img { width: 80px; height: 80px; border-radius: var(--radius-sm); overflow: hidden; }
.cart-item-img img { width: 100%; height: 100%; object-fit: cover; }

/* Toast */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 200;
  background: var(--c-ink); color: #fff; padding: 12px 20px; border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); transform: translateX(120%); transition: transform .25s;
}
.toast.show { transform: translateX(0); }

/* Empty state */
.empty { text-align: center; padding: var(--sp-7); color: var(--c-muted); }
.empty .icon { font-size: 3rem; margin-bottom: var(--sp-3); }

/* Skeleton */
.skeleton { background: linear-gradient(90deg, var(--c-surface-soft) 25%, var(--c-border) 50%, var(--c-surface-soft) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* Focus ring */
:focus-visible { outline: 3px solid var(--c-primary); outline-offset: 2px; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}