.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
  align-items: start;
}

/* SIDEBAR */
.catalog-sidebar {
  position: sticky;
  top: 80px;
  background: var(--white);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.sidebar-title { font-size: 18px; font-weight: 900; }

.sidebar-clear {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--gray-400);
  padding-bottom: 1px;
  transition: color var(--transition), border-color var(--transition);
}

.sidebar-clear:hover { color: var(--black); border-color: var(--black); }

.filter-group {
  border-top: 1px solid var(--gray-200);
  padding: 16px 0;
}

.filter-title {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-title::after {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--black);
  border-bottom: 2px solid var(--black);
  transform: rotate(45deg);
  transition: transform var(--transition);
}

.filter-title.collapsed::after { transform: rotate(-135deg); }

.filter-options { margin-top: 4px; }
.filter-options.hidden { display: none; }

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  cursor: pointer;
  font-size: 14px;
  color: var(--gray-600);
  transition: color var(--transition);
}

.filter-checkbox:hover { color: var(--black); }

.filter-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  border: 2px solid var(--gray-300);
  border-radius: 3px;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
  position: relative;
}

.filter-checkbox input[type="checkbox"]:checked {
  background: var(--black);
  border-color: var(--black);
}

.filter-checkbox input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 4px;
  width: 5px;
  height: 9px;
  border-right: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(45deg);
}

/* SIZE GRID */
.size-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.size-btn {
  padding: 8px 4px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--white);
}

.size-btn:hover { border-color: var(--black); color: var(--black); }
.size-btn.active { border-color: var(--black); background: var(--black); color: var(--white); }

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

.price-inputs span { color: var(--gray-400); flex-shrink: 0; }

.price-inputs input {
  flex: 1;
  padding: 8px 10px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 13px;
  outline: none;
  width: 0;
  transition: border-color var(--transition);
}

.price-inputs input:focus { border-color: var(--black); }

/* CATALOG MAIN */
.catalog-main { min-width: 0; }

.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 16px;
  flex-wrap: wrap;
}

.catalog-info { display: flex; align-items: baseline; gap: 10px; }

.catalog-title { font-size: 22px; font-weight: 900; }

.catalog-count { font-size: 14px; color: var(--gray-400); }

.catalog-controls { display: flex; align-items: center; gap: 10px; }

.filter-toggle-btn {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  background: var(--white);
}

.sort-select {
  padding: 8px 28px 8px 12px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  background: var(--white);
  appearance: none;
  background-image: 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='%23666' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  outline: none;
  cursor: pointer;
}

.view-toggle { display: flex; border: 1.5px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; }

.view-btn {
  padding: 8px 10px;
  color: var(--gray-400);
  transition: all var(--transition);
  background: var(--white);
  display: flex;
  align-items: center;
}

.view-btn.active, .view-btn:hover { background: var(--black); color: var(--white); }

/* ACTIVE FILTERS */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--gray-100);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.filter-tag button {
  font-size: 16px;
  color: var(--gray-400);
  line-height: 1;
  transition: color var(--transition);
}

.filter-tag button:hover { color: var(--black); }

/* LIST VIEW */
.products-grid.list-view {
  grid-template-columns: 1fr;
  gap: 16px;
}

.products-grid.list-view .product-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0;
  transform: none !important;
}

.products-grid.list-view .product-card:hover { box-shadow: var(--shadow); transform: none; }

.products-grid.list-view .product-card-img { aspect-ratio: 1; }

.products-grid.list-view .product-card-body {
  padding: 20px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.products-grid.list-view .product-card-name { font-size: 18px; margin-bottom: 8px; }

/* EMPTY STATE */
.catalog-empty {
  text-align: center;
  padding: 80px 24px;
}

.empty-icon { font-size: 56px; margin-bottom: 16px; }
.catalog-empty h3 { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.catalog-empty p { color: var(--gray-400); margin-bottom: 24px; }

/* MOBILE SIDEBAR OVERLAY */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
}

.sidebar-overlay.active { display: block; }

@media (max-width: 900px) {
  .catalog-layout {
    grid-template-columns: 1fr;
    padding: 16px 0;
    gap: 0;
  }

  .catalog-sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    bottom: 0;
    width: 280px;
    z-index: 201;
    overflow-y: auto;
    padding: 24px 20px;
    background: var(--white);
    transition: left 0.3s ease;
    box-shadow: 4px 0 24px rgba(0,0,0,0.15);
  }

  .catalog-sidebar.open { left: 0; }

  .filter-toggle-btn { display: flex; }
}

@media (max-width: 600px) {
  .products-grid.list-view .product-card { grid-template-columns: 120px 1fr; }
  .catalog-layout { padding: 12px 0; }
  .catalog-toolbar { padding: 0 12px; }
}

/* PAGINATION */
.catalog-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 32px 0 16px;
  flex-wrap: wrap;
}

.pag-btn {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-600);
  background: var(--white);
  cursor: pointer;
  transition: all var(--transition);
}

.pag-btn:hover:not(:disabled) { border-color: var(--black); color: var(--black); }
.pag-btn.active { background: var(--black); color: var(--white); border-color: var(--black); }
.pag-btn:disabled { opacity: 0.35; cursor: default; }