/* ==========================================================================
   DEVSTUDIO — CATALOG & CATEGORY LISTING STYLESHEET
   Product Filtering Sidebar, Faceted Search, Sort Toolbars & Responsive Grid
   ========================================================================== */

/* 1. Header & Breadcrumb Section */
.catalog-header-section {
  background-color: var(--ds-bg-surface-secondary);
  border-bottom: 1px solid var(--ds-border-subtle);
  padding: 32px 0 40px 0;
}

.breadcrumb-nav {
  margin-bottom: 16px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--ds-text-tertiary);
}

.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-list li:not(:last-child)::after {
  content: "/";
  color: var(--ds-text-muted);
}

.breadcrumb-list a {
  color: var(--ds-text-secondary);
  transition: color var(--ds-transition-fast);
}

.breadcrumb-list a:hover {
  color: var(--ds-brand-accent);
}

.breadcrumb-list li[aria-current="page"] {
  color: var(--ds-text-primary);
  font-weight: var(--ds-font-weight-medium);
}

.catalog-title-wrapper {
  max-width: 800px;
}

.catalog-page-title {
  font-size: clamp(1.875rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.catalog-page-desc {
  font-size: 1rem;
  color: var(--ds-text-secondary);
  line-height: 1.55;
}

/* 2. Main Catalog Two-Column Layout */
.catalog-body-section {
  padding: 40px 0 80px 0;
  background-color: var(--ds-bg-page);
}

.catalog-layout-container {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: flex-start;
}

/* 3. Left Filter Sidebar */
.catalog-sidebar {
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-subtle);
  border-radius: var(--ds-radius-lg);
  padding: 24px;
  position: sticky;
  top: calc(var(--ds-header-height) + 20px);
}

.sidebar-header-mobile {
  display: none;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ds-border-subtle);
}

.filter-group {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ds-border-subtle);
}

.filter-group:last-of-type {
  border-bottom: none;
  margin-bottom: 16px;
  padding-bottom: 0;
}

.filter-group-title {
  font-size: 0.8125rem;
  font-weight: var(--ds-font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ds-text-primary);
  margin-bottom: 12px;
}

.filter-options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.filter-checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--ds-text-secondary);
  cursor: pointer;
  user-select: none;
  transition: color var(--ds-transition-fast);
}

.filter-checkbox-label:hover {
  color: var(--ds-text-primary);
}

.facet-checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--ds-brand-accent);
  border-radius: 4px;
  cursor: pointer;
}

.price-range-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
}

.price-separator {
  color: var(--ds-text-muted);
  font-weight: bold;
}

.form-input-sm {
  padding: 6px 10px;
  font-size: 0.8125rem;
}

/* 4. Right Catalog Main Column & Toolbar */
.catalog-main {
  display: flex;
  flex-direction: column;
}

.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: var(--ds-bg-surface-secondary);
  border: 1px solid var(--ds-border-subtle);
  border-radius: var(--ds-radius-md);
  margin-bottom: 24px;
  gap: 16px;
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-filter-trigger {
  display: none;
}

.products-count-badge {
  font-size: 0.8125rem;
  color: var(--ds-text-tertiary);
  font-weight: var(--ds-font-weight-medium);
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sort-select {
  padding: 6px 12px;
  font-size: 0.8125rem;
  font-weight: var(--ds-font-weight-medium);
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-sm);
  cursor: pointer;
}

/* 5. Product Grid */
.catalog-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 6. Empty / No Results State */
.catalog-no-results {
  background-color: var(--ds-bg-surface-secondary);
  border: 1px dashed var(--ds-border-default);
  border-radius: var(--ds-radius-lg);
  padding: 64px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--ds-text-tertiary);
  gap: 12px;
}

.catalog-no-results h3 {
  color: var(--ds-text-primary);
  font-size: 1.25rem;
}

.catalog-no-results p {
  font-size: 0.875rem;
  max-width: 400px;
  margin-bottom: 8px;
}

/* 7. Responsive Breakpoint Adaptations */
@media (max-width: 1024px) {
  .catalog-layout-container {
    grid-template-columns: 1fr;
  }

  .mobile-filter-trigger {
    display: inline-flex;
  }

  .catalog-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 320px;
    max-width: 85%;
    z-index: 180;
    border-radius: 0;
    box-shadow: var(--ds-shadow-xl);
    transform: translateX(-100%);
    transition: transform var(--ds-transition-smooth);
    overflow-y: auto;
  }

  .catalog-sidebar.is-active {
    transform: translateX(0);
  }

  .sidebar-header-mobile {
    display: flex;
  }

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

@media (max-width: 540px) {
  .catalog-products-grid {
    grid-template-columns: 1fr;
  }

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

  .toolbar-left, .toolbar-right {
    justify-content: space-between;
    width: 100%;
  }

  .sort-select {
    width: 100%;
  }
}