/* ═══════════════════════════════════════════════════════
   Collection / Product Archive Page (ThinkPro-style)
   ═══════════════════════════════════════════════════════ */

/* ─── Breadcrumb ─── */
.collection-breadcrumb {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb svg {
  flex-shrink: 0;
  color: var(--color-text-light);
}

.breadcrumb__current {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

/* ─── Collection Header ─── */
.collection-header {
  padding: var(--space-xl) 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.collection-header__info {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
}

.collection-header__title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin: 0;
}

.collection-header__count {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ─── Category Pills ─── */
.collection-categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.collection-categories__pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.collection-categories__pill:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.collection-categories__pill.active {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.collection-categories__pill.active .collection-categories__count {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.collection-categories__count {
  font-size: 0.7rem;
  background: var(--color-border);
  color: var(--color-text-muted);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
  line-height: 1.4;
}

/* ─── Featured Product Banner ─── */
.collection-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #fff 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin: var(--space-lg) 0;
  transition: box-shadow var(--transition-base);
}

.collection-featured:hover {
  box-shadow: var(--shadow-lg);
}

.collection-featured__image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.collection-featured__image a {
  display: block;
  width: 100%;
  height: 100%;
}

.collection-featured__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.collection-featured:hover .collection-featured__image img {
  transform: scale(1.03);
}

.collection-featured__badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  background: var(--color-accent);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.collection-featured__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-xl) var(--space-xl) var(--space-xl) 0;
  gap: var(--space-sm);
}

.collection-featured__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.collection-featured__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  margin: 0;
}

.collection-featured__title a {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.collection-featured__title a:hover {
  color: var(--color-primary);
}

.collection-featured__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.collection-featured__features {
  list-style: none;
  padding: 0;
  margin: var(--space-xs) 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}

.collection-featured__features li {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.4;
}

.collection-featured__features li svg {
  flex-shrink: 0;
}

.collection-featured__bottom {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xs);
}

.collection-featured__price {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
}

.collection-featured__warranty {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

.collection-featured__warranty svg {
  flex-shrink: 0;
}

.collection-featured .btn {
  align-self: flex-start;
  margin-top: var(--space-xs);
}

/* ─── Toolbar ─── */
.collection-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) 0;
}

.collection-filters {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ─── Filter Dropdown ─── */
.filter-dropdown {
  position: relative;
}

.filter-dropdown__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.5rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.filter-dropdown__toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-dropdown__toggle[aria-expanded="true"] {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-dropdown__toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.filter-dropdown__toggle svg {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.filter-dropdown__menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 200px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm);
  display: none;
  z-index: 100;
}

.filter-dropdown.open .filter-dropdown__menu {
  display: block;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.45rem 0.5rem;
  font-size: var(--text-sm);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.filter-option:hover {
  background: var(--color-bg-alt);
}

.filter-option input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* ─── Sort ─── */
.collection-sort {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.collection-sort__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.collection-sort__select {
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236c6c80' stroke-width='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
  transition: border-color var(--transition-fast);
}

.collection-sort__select:hover,
.collection-sort__select:focus {
  border-color: var(--color-primary);
  outline: none;
}

/* ─── Active Filters ─── */
.collection-active-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  padding-bottom: var(--space-md);
}

.collection-active-filters__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.6rem;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.collection-active-filters__tag:hover {
  background: var(--color-primary);
  color: #fff;
}

.collection-active-filters__tag svg {
  flex-shrink: 0;
}

.collection-active-filters__clear {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.6rem;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-danger);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.collection-active-filters__clear:hover {
  color: var(--color-text);
}

/* ─── Collection Grid ─── */
.collection-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  padding-bottom: var(--space-2xl);
}

/* ─── Empty State ─── */
.collection-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
  gap: var(--space-md);
}

.collection-empty h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin: 0;
}

.collection-empty p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin: 0;
}

/* ─── Pagination ─── */
.collection-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-xl) 0 var(--space-2xl);
}

.collection-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.collection-pagination .page-numbers:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.collection-pagination .page-numbers.current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.collection-pagination .page-numbers svg {
  display: block;
}

/* ─── SEO Content ─── */
.collection-seo {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

.collection-seo__content {
  max-width: 800px;
}

.collection-seo__content h2 {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.collection-seo__content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-md);
}

.collection-seo__content p:last-child {
  margin-bottom: 0;
}

/* ─── Responsive: Desktop ─── */
@media (max-width: 1280px) {
  .collection-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ─── Responsive: Tablet ─── */
@media (max-width: 1024px) {
  .collection-header__title {
    font-size: var(--text-2xl);
  }

  .collection-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .collection-featured {
    grid-template-columns: 1fr 1fr;
  }

  .collection-featured__title {
    font-size: var(--text-xl);
  }

  .collection-featured__features {
    grid-template-columns: 1fr;
  }
}

/* ─── Responsive: Mobile ─── */
@media (max-width: 768px) {
  .collection-header {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-md) 0;
  }

  .collection-header__info {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .collection-header__title {
    font-size: var(--text-xl);
  }

  .collection-categories {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: var(--space-md);
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
  }

  .collection-categories::-webkit-scrollbar {
    display: none;
  }

  .collection-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .collection-sort {
    justify-content: flex-end;
  }

  .collection-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .collection-featured {
    grid-template-columns: 1fr;
  }

  .collection-featured__info {
    padding: 0 var(--space-lg) var(--space-lg);
  }

  .collection-featured__title {
    font-size: var(--text-xl);
  }

  .collection-featured__price {
    font-size: var(--text-xl);
  }

  .collection-pagination .page-numbers {
    min-width: 36px;
    height: 36px;
    font-size: var(--text-xs);
  }
}

@media (max-width: 480px) {
  .collection-grid {
    grid-template-columns: 1fr;
  }
}