/* Local to the flooring catalog; material and shape selectors retain their layout. */
.flooring-catalog {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}
.flooring-catalog-content { min-width: 0; }
.flooring-series-nav {
  position: sticky;
  top: calc(var(--nav-height) + 16px);
  background: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.fsn-title {
  padding: 20px 18px 15px;
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}
.fsn-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
  max-height: calc(100vh - var(--nav-height) - 118px);
  max-height: calc(100dvh - var(--nav-height) - 118px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--border-green) transparent;
}
.fsn-item {
  position: relative;
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  font: inherit;
  font-size: 0.85rem;
  line-height: 1.55;
  text-align: start;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}
.fsn-item:hover { background: var(--bg-warm); color: var(--text-primary); }
.fsn-item.active { background: var(--accent-dim); color: var(--text-primary); font-weight: 600; }
.fsn-item.active::before {
  content: '';
  position: absolute;
  inset-inline-start: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 3px;
  background: var(--accent-green);
}
.fsn-name { min-width: 0; overflow-wrap: anywhere; }
.fsn-count {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.fsn-item.active .fsn-count { color: var(--accent-green); }
.fsn-item:focus-visible, .fsn-toggle:focus-visible { outline: 2px solid var(--accent-green); outline-offset: -2px; }
.fsn-toggle { display: none; }
.flooring-catalog .series-products, .flooring-catalog .product-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding-inline-start: 0;
}
.flooring-catalog .series-info { min-width: 0; }
.flooring-catalog .series-info h3 { overflow-wrap: anywhere; }
.flooring-catalog .series-group:last-child { margin-bottom: 0; }
.flooring-catalog h3:focus, .flooring-catalog .section-label:focus { outline: none; }
@media (max-width: 1200px) and (min-width: 901px) {
  .flooring-catalog { grid-template-columns: 200px minmax(0, 1fr); gap: 20px; }
  .flooring-catalog .series-products, .flooring-catalog .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .flooring-catalog .series-header { gap: 12px; padding: 18px; }
  .flooring-catalog .series-icon { display: none; }
}
@media (max-width: 900px) {
  .flooring-catalog { display: block; }
  .flooring-series-nav { top: calc(var(--nav-height) + 8px); z-index: 20; margin-bottom: 20px; overflow: visible; }
  .fsn-title { display: none; }
  .fsn-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    border: 0;
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    font: inherit;
    text-align: start;
    color: var(--text-primary);
    cursor: pointer;
  }
  .fsn-toggle-text { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
  .fsn-toggle-label { flex-shrink: 0; font-size: 0.82rem; color: var(--text-muted); }
  .fsn-current { font-size: 0.9rem; font-weight: 600; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .fsn-toggle > i { color: var(--accent-green); font-size: 0.8rem; transition: transform 0.18s; }
  .flooring-series-nav.is-open .fsn-toggle > i { transform: rotate(180deg); }
  .fsn-list {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: -1px;
    right: -1px;
    max-height: calc(100vh - var(--nav-height) - 100px);
    max-height: calc(100dvh - var(--nav-height) - 100px);
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-elevated);
  }
  .flooring-series-nav.is-open .fsn-list { display: flex; }
  .flooring-catalog .series-products, .flooring-catalog .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  .flooring-catalog .series-products, .flooring-catalog .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .flooring-catalog .series-header { gap: 12px; flex-wrap: wrap; }
  .flooring-catalog .series-count { margin-inline-start: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fsn-item, .fsn-toggle > i { transition: none; }
}