/* ============================================================
   717tech — Catalog page
   ============================================================ */

.catalog-page {
  min-height: calc(100vh - 60px);
  padding: 52px 24px 88px;
}

.catalog-container {
  max-width: 810px;
  margin: 0 auto;
}

.catalog-heading { margin-bottom: 26px; }
.catalog-heading h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 10px;
}
.catalog-count { color: var(--text-muted); font-size: 0.9rem; }

.catalog-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 8px;
  margin-bottom: 20px;
}
.catalog-search { min-height: 42px; }
.catalog-search input { width: 100%; }
.sort-box select {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  color: var(--text);
  background: #141414;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font: inherit;
  font-size: 0.82rem;
  outline: none;
}
.sort-box select:focus { border-color: var(--green); }

.catalog-layout {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}
.catalog-sidebar {
  min-width: 0;
  position: sticky;
  top: 80px;
  align-self: start;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #454545 transparent;
}
.catalog-sidebar::-webkit-scrollbar { width: 5px; }
.catalog-sidebar::-webkit-scrollbar-track { background: transparent; }
.catalog-sidebar::-webkit-scrollbar-thumb { background: #454545; border-radius: 5px; }
.catalog-sidebar::-webkit-scrollbar-thumb:hover { background: var(--green); }
.filter-group { margin-bottom: 28px; }
.filter-group h2 {
  color: #fff;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.brand-filter-list {
  max-height: 190px;
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
  scrollbar-color: #454545 transparent;
}
.brand-filter-list::-webkit-scrollbar { width: 5px; }
.brand-filter-list::-webkit-scrollbar-track { background: transparent; }
.brand-filter-list::-webkit-scrollbar-thumb { background: #454545; border-radius: 5px; }
.brand-filter-list::-webkit-scrollbar-thumb:hover { background: var(--green); }
.filter-option {
  display: block;
  width: 100%;
  padding: 7px 0;
  color: #929292;
  text-align: left;
  font-size: 0.8rem;
  transition: color var(--transition);
}
.filter-option:hover, .filter-option.active { color: var(--green); }

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.catalog-grid .product-card { min-width: 0; border-radius: 0; }
.catalog-grid .product-img { aspect-ratio: 1 / 1; }
.catalog-grid .product-body { padding: 14px 12px 16px; }
.catalog-grid .product-name { min-height: 2.6em; font-size: 0.86rem; }
.catalog-grid .product-price { font-size: 0.98rem; }
.catalog-grid .product-old-price { font-size: 0.65rem; }
.catalog-grid .add-btn { width: 30px; height: 30px; font-size: 1rem; }

.catalog-empty {
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-muted);
  text-align: center;
  border: 1px dashed var(--border);
}
.catalog-empty strong { color: var(--text); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 900px) {
  .catalog-page { padding-top: 38px; }
  .catalog-layout { grid-template-columns: 150px minmax(0, 1fr); gap: 16px; }
  .catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .catalog-page { padding: 30px 16px 60px; }
  .catalog-toolbar { grid-template-columns: 1fr; }
  .catalog-layout { grid-template-columns: 1fr; }
  .catalog-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    border-bottom: 1px solid var(--border);
  }
  .filter-group { margin-bottom: 14px; }
  .catalog-grid { gap: 10px; }
}

@media (max-width: 420px) {
  .catalog-grid { grid-template-columns: 1fr; }
}