/* ============================================
   KOVA — Catalog Page
   ============================================ */

/* ---------- Catalog Layout ---------- */
.catalog {
  padding: var(--space-lg) 0 var(--space-4xl);
}

.catalog__layout {
  display: flex;
  gap: var(--space-xl);
}

/* ---------- Catalog Header ---------- */
.catalog__header {
  margin-bottom: var(--space-lg);
}

.catalog__breadcrumb {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.catalog__breadcrumb a {
  transition: color var(--transition-fast);
}

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

.catalog__breadcrumb-separator {
  font-size: 10px;
}

.catalog__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.catalog__count {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ---------- Mobile Filter Bar ---------- */
.catalog__mobile-bar {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  position: sticky;
  top: var(--header-height-mobile);
  z-index: 50;
  background-color: var(--color-bg);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 1024px) {
  .catalog__mobile-bar { display: none; }
}

.catalog__mobile-bar .btn {
  flex: 1;
  padding: 10px 16px;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  justify-content: center;
  gap: 6px;
}

.catalog__mobile-bar .btn svg {
  width: 16px;
  height: 16px;
  stroke-width: 1.5;
}

/* ---------- Sidebar Filters (Desktop) ---------- */
.catalog__sidebar {
  display: none;
  width: 240px;
  flex-shrink: 0;
}

@media (min-width: 1024px) {
  .catalog__sidebar { display: block; }
}

.filter-group {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
}

.filter-group:first-child {
  padding-top: 0;
}

.filter-group__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: var(--space-xs) 0;
  user-select: none;
}

.filter-group__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-group__toggle svg {
  width: 14px;
  height: 14px;
  stroke-width: 1.5;
  transition: transform var(--transition-fast);
}

.filter-group.collapsed .filter-group__toggle svg {
  transform: rotate(-90deg);
}

.filter-group__body {
  padding-top: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-group.collapsed .filter-group__body {
  display: none;
}

/* Checkbox filters */
.filter-check {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  padding: 2px 0;
}

.filter-check:hover {
  color: var(--color-text-primary);
}

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

.filter-check__count {
  margin-left: auto;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Color filters */
.filter-colors {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-xs);
}

.filter-color {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition-fast);
  padding: 0;
  position: relative;
}

.filter-color:hover,
.filter-color.active {
  border-color: var(--color-black);
}

.filter-color__inner {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

/* Price range */
.filter-price-ranges {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Sort dropdown */
.catalog__sort {
  display: none;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

@media (min-width: 1024px) {
  .catalog__sort {
    display: flex;
    justify-content: flex-end;
  }
}

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

.catalog__sort-select {
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background: var(--color-white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 10px center;
  appearance: none;
  cursor: pointer;
  min-width: 160px;
}

/* Active filters bar */
.catalog__active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.active-filter-tag {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: var(--font-size-xs);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.active-filter-tag:hover {
  background-color: var(--color-border);
}

.active-filter-tag svg {
  width: 12px;
  height: 12px;
  stroke-width: 2;
}

.clear-all-filters {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-decoration: underline;
  cursor: pointer;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.clear-all-filters:hover {
  color: var(--color-text-primary);
}

/* ---------- Product Grid ---------- */
.catalog__main {
  flex: 1;
  min-width: 0;
}

.catalog__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
}

@media (min-width: 640px) {
  .catalog__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
}

@media (min-width: 768px) {
  .catalog__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
}

@media (min-width: 1024px) {
  .catalog__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
}

@media (min-width: 1280px) {
  .catalog__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
  }
}

/* ---------- Load More / Pagination ---------- */
.catalog__load-more {
  text-align: center;
  margin-top: var(--space-2xl);
}

.catalog__showing {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

/* ---------- No Results ---------- */
.catalog__no-results {
  text-align: center;
  padding: var(--space-4xl) var(--space-md);
  color: var(--color-text-muted);
}

.catalog__no-results h3 {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.catalog__no-results p {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-lg);
}

/* ---------- Skeleton Loading ---------- */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-pulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.skeleton-card__image {
  aspect-ratio: 3 / 4;
  width: 100%;
}

.skeleton-card__text {
  height: 12px;
  width: 60%;
}

.skeleton-card__text--short {
  width: 40%;
}

.skeleton-card__text--price {
  width: 30%;
  height: 14px;
}

/* ---------- Mobile Filter Drawer ---------- */
.filter-drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 85vh;
  background-color: var(--color-white);
  z-index: 1001;
  transform: translateY(100%);
  transition: transform var(--transition-base);
  border-radius: 16px 16px 0 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.filter-drawer.active {
  transform: translateY(0);
}

.filter-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.filter-drawer__title {
  font-size: var(--font-size-md);
  font-weight: 600;
}

.filter-drawer__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.filter-drawer__close svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

.filter-drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
}

.filter-drawer__footer {
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.filter-drawer__footer .btn {
  flex: 1;
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 44px;
  height: 44px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), background-color var(--transition-fast);
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}