/* ==========================================================================
   SJCC LEARN — CATALOG PAGE CSS (#/catalog)
   Faceted Filters, Full-Text Search, Sort Bar, and Course Card Grid
   ========================================================================== */

.catalog-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-8);
  align-items: flex-start;
  margin-top: var(--space-6);
}

.catalog-mobile-filter-btn {
  display: none;
}

/* Filters Sidebar */
.catalog-filters {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-1);
  position: sticky;
  top: calc(var(--header-height) + var(--space-4));
}

.filters-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-light);
}

.filter-group {
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-light);
}

.filter-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.filter-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
}

.filter-item input {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
  margin-right: 8px;
  cursor: pointer;
}

.filter-count {
  font-family: var(--font-mono);
  color: var(--text-3);
  font-size: 0.7rem;
}

/* Main Catalog Content */
.catalog-content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.catalog-topbar {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.catalog-search-wrap {
  position: relative;
  flex: 1;
  min-width: 240px;
}

.catalog-search-wrap input {
  width: 100%;
  height: 40px;
  padding-left: 38px;
  padding-right: var(--space-4);
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--text);
  transition: all var(--transition-fast);
}

.catalog-search-wrap input:focus {
  border-color: var(--primary);
  box-shadow: var(--focus-ring);
  outline: none;
}

.catalog-search-wrap .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  pointer-events: none;
}

.catalog-sort-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-2);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

@media (max-width: 900px) {
  .catalog-layout {
    grid-template-columns: 1fr;
  }
  .catalog-mobile-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    width: 100%;
    justify-content: center;
    margin-bottom: var(--space-4);
  }
  .catalog-filters {
    position: static;
    display: none;
    margin-bottom: var(--space-6);
  }
  .catalog-filters.open {
    display: block;
    animation: fadeIn 200ms ease;
  }
  .catalog-topbar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }
  .catalog-search-wrap {
    width: 100%;
    min-width: 0;
  }
  .catalog-sort-wrap {
    width: 100%;
    justify-content: space-between;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}