/* ============================================================
   CATALOG PAGE — uses design tokens from main.css (:root)
   ============================================================ */

/* ── Layout ── */
.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.75rem;
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem;
  align-items: start;
}

/* ── Sidebar ── */
.catalog-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.sidebar-header {
  padding: .875rem 1rem;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sidebar-title {
  font-size: .85rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 0;
}
.sidebar-clear {
  font-size: .75rem;
  color: var(--c-text-3);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  text-decoration: underline;
}
.sidebar-clear:hover { color: #dc2626; }

/* Filter groups */
.filter-group {
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--c-surface-3);
}
.filter-group:last-child { border-bottom: none; }

.filter-title {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--c-text-3);
  margin: 0 0 .6rem;
}

.filter-options { display: flex; flex-direction: column; gap: .35rem; }

.filter-option {
  display: flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  font-size: .83rem;
  color: var(--c-text-2);
}
.filter-option input[type="radio"],
.filter-option input[type="checkbox"] {
  accent-color: var(--c-primary);
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  cursor: pointer;
}
.filter-label { flex: 1; cursor: pointer; }
.filter-count {
  font-size: .7rem;
  color: var(--c-text-3);
  background: var(--c-surface-2);
  padding: .05rem .35rem;
  border-radius: 999px;
}

/* MW range */
.filter-range {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-wrap: wrap;
  margin-top: .4rem;
}
.filter-range-input {
  width: 70px;
  padding: .3rem .4rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-size: .78rem;
  outline: none;
  color: var(--c-text);
}
.filter-range-input:focus { border-color: var(--c-primary); }
.btn-filter-apply {
  padding: .3rem .65rem;
  background: var(--c-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
}
.btn-filter-apply:hover { background: var(--c-primary-h); }

/* Mobile filter toggle */
.btn-mobile-filter {
  display: none;
  align-items: center;
  gap: .4rem;
  padding: .45rem .75rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--c-text);
}
.btn-mobile-filter svg { width: 15px; height: 15px; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 200;
}
.sidebar-overlay.open { display: block; }

/* ── Main content ── */
.catalog-main { min-width: 0; }

.catalog-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: .75rem;
  flex-wrap: wrap;
}

/* Search bar */
.catalog-search-bar { flex: 1; min-width: 200px; }
.topbar-search {
  display: flex;
  align-items: center;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
  overflow: hidden;
  height: 36px;
}
.topbar-search svg {
  width: 15px; height: 15px;
  flex-shrink: 0;
  margin-left: .65rem;
  color: var(--c-text-3);
}
.topbar-search input {
  flex: 1;
  border: none;
  outline: none;
  padding: 0 .5rem;
  font-size: .85rem;
  background: transparent;
  color: var(--c-text);
  min-width: 0;
}
.topbar-search input::placeholder { color: var(--c-text-3); }
.topbar-search-btn {
  padding: 0 .9rem;
  height: 100%;
  background: var(--c-primary);
  color: #fff;
  border: none;
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.topbar-search-btn:hover { background: var(--c-primary-h); }
.topbar-search-clear {
  padding: 0 .5rem;
  color: var(--c-text-3);
  font-size: 1rem;
  text-decoration: none;
  line-height: 1;
}

.catalog-meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-shrink: 0;
}
.catalog-count { font-size: .82rem; color: var(--c-text-3); white-space: nowrap; }
.catalog-count strong { color: var(--c-text); }

/* Active filter tags */
.active-filters {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  margin-bottom: .875rem;
}
.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .2rem .55rem;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
  color: var(--c-text-2);
  text-decoration: none;
}
.active-filter-tag:hover { border-color: var(--c-primary); color: var(--c-primary); }

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .875rem;
}
.product-grid--4 { grid-template-columns: repeat(4, 1fr); }

/* Load more */
.catalog-pagination {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
}
.btn-load-more {
  padding: .6rem 2rem;
  border: 1px solid var(--c-primary);
  border-radius: var(--radius);
  color: var(--c-primary);
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}
.btn-load-more:hover { background: var(--c-primary); color: #fff; }

/* Empty state */
.catalog-empty {
  text-align: center;
  padding: 4rem 0;
  grid-column: 1 / -1;
}
.catalog-empty svg { width: 56px; height: 56px; color: var(--c-text-3); margin-bottom: 1rem; }
.catalog-empty h3 { margin-bottom: .4rem; color: var(--c-text); }
.catalog-empty p { color: var(--c-text-3); margin-bottom: 1rem; font-size: .9rem; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .catalog-layout { grid-template-columns: 1fr; }
  .catalog-sidebar { display: none; }
  .btn-mobile-filter { display: flex; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .product-grid,
  .product-grid--4 { grid-template-columns: 1fr; }
}