/* Collection controls share the editorial grid; color marks selection. */
.collection-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.collection-heading { display: flex; align-items: baseline; flex-wrap: wrap; gap: 16px; }
.collection-count { color: var(--color-text-secondary); font-size: 13px; font-variant-numeric: tabular-nums; }
.filter-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 44px; padding: 10px 16px; border: 1px solid var(--color-border); font-size: 13px; font-weight: 500; white-space: nowrap; transition: color .18s, border-color .18s, background .18s; }
.filter-toggle:hover { border-color: var(--color-text); }
.filter-toggle[aria-expanded="true"] { background: var(--color-text); border-color: var(--color-text); color: var(--color-bg); }
.filter-count { color: var(--color-accent); font-variant-numeric: tabular-nums; }
.filter-toggle[aria-expanded="true"] .filter-count { color: inherit; }
.filter-toggle-indicator { transition: transform .2s ease; }
.filter-toggle[aria-expanded="true"] .filter-toggle-indicator { transform: rotate(180deg); }
.collection-filters { margin-bottom: 24px; }
.filter-form { padding: 24px 0 0; }
.filter-label { display: flex; align-items: baseline; gap: 16px; width: 100%; margin-bottom: 16px; color: var(--color-text); font-size: 13px; font-weight: 600; }
.filter-label > span { color: var(--color-text-secondary); font-size: 12px; font-weight: 400; }
.filter-topic-options { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-topic { position: relative; display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 10px 14px; border: 1px solid var(--color-border); cursor: pointer; font-size: 13px; line-height: 1.4; transition: border-color .18s, color .18s, background .18s; }
.filter-topic:hover { border-color: var(--color-text); }
.filter-topic:has(input:checked) { color: var(--color-accent); border-color: var(--color-accent); background: var(--color-accent-light); }
.filter-topic input, .filter-option input { flex-shrink: 0; width: 15px; height: 15px; margin: 0; border: 1px solid var(--color-text-secondary); border-radius: 0; color: var(--color-accent); accent-color: var(--color-accent); cursor: pointer; }
.filter-topic input:checked, .filter-option input:checked { border-color: var(--color-accent); background-color: var(--color-accent); }
.filter-fields { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; margin-top: 32px; }
.filter-field { min-width: 0; }
.filter-field .filter-label { margin-bottom: 10px; }
.filter-picker { position: relative; }
.filter-picker > summary, .filter-year { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 48px; border-bottom: 1px solid var(--color-border); cursor: pointer; list-style: none; font-size: 16px; }
.filter-picker > summary::-webkit-details-marker { display: none; }
.filter-picker > summary > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.filter-picker > summary > svg, .filter-year > svg { flex-shrink: 0; }
.filter-picker[open] > summary { border-color: var(--color-text); }
.filter-picker[open] > summary > svg { transform: rotate(180deg); }
.filter-picker-panel { position: absolute; z-index: 30; top: calc(100% + 8px); left: 0; width: 100%; min-width: 240px; padding: 12px; border: 1px solid var(--color-border); background: var(--color-bg); }
.filter-search { width: 100%; min-width: 0; min-height: 44px; padding: 10px; border: 1px solid var(--color-border); border-radius: 0; background: var(--color-bg); color: var(--color-text); font: inherit; font-size: 14px; }
.filter-search::placeholder { color: var(--color-text-secondary); opacity: 1; }
.filter-picker-options { max-height: 264px; overflow-y: auto; overscroll-behavior: contain; margin-top: 8px; }
.filter-option { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 10px; color: var(--color-text); cursor: pointer; font-size: 14px; line-height: 1.4; }
.filter-option:hover { background: var(--color-bg-secondary); }
.filter-option:has(input:checked) { color: var(--color-accent); }
.filter-no-matches { padding: 16px 10px; color: var(--color-text-secondary); font-size: 13px; }
.filter-year { position: relative; }
.filter-year select { width: 100%; min-height: 47px; padding: 8px 32px 8px 0; border: 0; border-radius: 0; background: transparent; color: var(--color-text); font: inherit; font-size: 16px; appearance: none; cursor: pointer; }
.filter-year select option { color: var(--color-text); background: var(--color-bg); }
.filter-year > svg { position: absolute; right: 0; pointer-events: none; }
.filter-footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 32px; padding: 24px 0; }
.filter-footer > p { margin: 0; color: var(--color-text-secondary); font-size: 13px; }
.filter-actions { display: flex; align-items: center; gap: 24px; flex-shrink: 0; }
.filter-clear { display: inline-flex; align-items: center; min-height: 44px; color: var(--color-text-secondary); font-size: 13px; text-decoration: underline; text-underline-offset: 4px; }
.filter-clear:hover { color: var(--color-text); }
.filter-apply { display: inline-flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 48px; padding: 12px 20px; background: var(--color-accent); color: var(--color-text-inverse); font-size: 14px; font-weight: 500; transition: background .18s; }
.filter-apply:hover { background: var(--color-accent-hover); }
.filter-apply svg { transition: transform .18s; }
.filter-apply:hover svg { transform: translateX(3px); }
.active-filters { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding-bottom: 24px; }
.active-filter { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; max-width: 100%; padding: 10px 12px; background: var(--color-bg-secondary); color: var(--color-text); font-size: 13px; transition: color .18s; }
.active-filter > span { overflow-wrap: anywhere; }
.active-filter > svg { flex-shrink: 0; }
.active-filter:hover { color: var(--color-accent); }
.active-filters > .filter-clear { margin-left: 8px; }
#videos :is(.filter-toggle, .filter-topic, .filter-picker summary, .filter-search, .filter-year select, .filter-apply, .filter-clear, .active-filter):focus-visible,
.filter-topic:has(input:focus-visible), .filter-option:has(input:focus-visible) { outline: 2px solid var(--color-accent); outline-offset: 4px; }
.filter-option[hidden] { display: none; }
@media (max-width: 767px) {
  .filter-fields { grid-template-columns: 1fr; gap: 24px; }
  .filter-picker-panel { position: static; min-width: 0; margin-top: 8px; }
  .filter-footer { align-items: flex-start; flex-direction: column; gap: 16px; margin-top: 24px; }
  .filter-actions { width: 100%; justify-content: space-between; }
}
@media (max-width: 599px) {
  .collection-header { gap: 12px; }
  .collection-heading { display: block; }
  .collection-count { display: block; margin-top: 4px; font-size: 12px; }
  .filter-toggle { gap: 8px; padding: 10px 12px; }
  .filter-toggle > svg:first-child { display: none; }
  .filter-form { padding-top: 16px; }
  .filter-label { flex-wrap: wrap; gap: 4px 12px; }
  .filter-topic { padding: 10px; font-size: 12px; }
}