/* Catalog grid */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s ease, transform .2s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.product-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: contain; background: var(--color-bg-alt); padding: 16px; }
.product-card .product-card-body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.product-card .product-card-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin: 0;
}
.product-card .product-card-link {
  margin-top: auto;
  font-weight: 700;
  color: var(--color-ink);
}

.category-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.category-filter button,
.category-filter a {
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.category-filter button.active,
.category-filter button:hover,
.category-filter a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-ink);
}

/* Product detail */
.product-detail-image {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  box-shadow: var(--shadow-sm);
}
.product-detail-image img { max-width: 100%; max-height: 100%; object-fit: contain; transition: transform .3s ease; }
.product-detail-image:hover img { transform: scale(1.05); }
.product-detail-name { font-size: 1.7rem; margin-bottom: 8px; }
.product-detail-price { color: var(--color-ink); font-weight: 700; font-size: 1.1rem; margin: 8px 0 20px; }
.product-detail-intro { line-height: 1.85; color: var(--color-text); font-size: 1.02rem; margin-bottom: 28px; }
.product-detail-intro strong { color: var(--color-ink); }

/* Description accordion */
.product-accordion .accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius) !important;
  overflow: hidden;
  margin-bottom: 12px;
}
.product-accordion .accordion-header { margin: 0; }
.product-accordion .accordion-button {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .96rem;
  color: var(--color-ink);
  background: var(--color-bg-alt);
  padding: 16px 20px;
}
.product-accordion .accordion-button:not(.collapsed) {
  background: var(--color-primary-light);
  color: var(--color-ink);
  box-shadow: none;
}
.product-accordion .accordion-button:focus { box-shadow: none; border-color: var(--color-border); }
.product-accordion .accordion-icon {
  flex: 0 0 auto;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: .82rem;
}
.product-accordion .accordion-body {
  font-size: .92rem;
  line-height: 1.85;
  color: var(--color-text);
  padding: 18px 20px;
}
.product-accordion .accordion-body p { margin-bottom: 12px; }
.product-accordion .accordion-body p:last-child { margin-bottom: 0; }
.product-accordion .accordion-body ul { padding-left: 20px; margin-bottom: 12px; }
.product-accordion .accordion-body li { margin-bottom: 6px; }

.spec-table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.spec-table tr { border-bottom: 1px solid var(--color-border); }
.spec-table td { padding: 10px 12px; font-size: .92rem; }
.spec-table td:first-child { color: var(--color-text-muted); font-weight: 600; width: 40%; }

/* Category nav sidebar (8 paint lines) */
.category-nav {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: sticky;
  top: 90px;
}
.category-nav-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .95rem;
  color: var(--color-ink);
  margin-bottom: 14px;
}
.category-nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.category-nav-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--color-bg);
  border: 1px solid transparent;
}
.category-nav-list a:hover { border-color: var(--color-primary); text-decoration: none; }
.category-nav-list a.active { background: var(--color-primary-light); border-color: var(--color-primary); }
.category-nav-icon {
  flex: 0 0 auto;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: .82rem;
}
.category-nav-label { font-size: .85rem; font-weight: 700; color: var(--color-ink); line-height: 1.3; }
.category-nav-label small { display: block; font-weight: 500; color: var(--color-text-muted); font-size: .72rem; margin-top: 2px; }

@media (max-width: 991.98px) {
  .category-nav { position: static; }
}

.product-not-found { text-align: center; padding: 80px 0; }