/**
 * Unified filter system for Tools, Skills, and Workflow Packs
 * Same visual style, but unique filters per section
 */

/* Container layout: sidebar + grid */
.adf-browse-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .adf-browse-layout {
    grid-template-columns: 1fr;
  }
}

/* Sidebar filters */
.adf-filters-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 20px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
}

.adf-filters-sidebar::-webkit-scrollbar {
  width: 6px;
}

.adf-filters-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.adf-filters-sidebar::-webkit-scrollbar-thumb {
  background: var(--adf-link-wash-20);
  border-radius: 3px;
}

.adf-filters-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--adf-link-wash-40);
}

/* Filter section */
.adf-filter-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.adf-filter-section__title {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--adf-ink);
  margin: 0;
  padding: 0.5rem 0.75rem;
}

/* Search input */
.adf-filter-search {
  position: relative;
  margin-bottom: 0.5rem;
}

.adf-filter-search__input {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--adf-link-wash-30);
  border-radius: 4px;
  background: var(--adf-bg);
  color: var(--adf-ink);
  font-size: 0.875rem;
  transition: border-color 0.15s ease;
}

.adf-filter-search__input:focus {
  outline: none;
  border-color: var(--adf-link);
  box-shadow: 0 0 0 2px var(--adf-link-wash-12);
}

.adf-filter-search__input::placeholder {
  color: var(--adf-ink-muted);
}

/* Filter button */
.adf-filter-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--adf-link-wash-20);
  border-radius: 4px;
  background: var(--adf-bg);
  color: var(--adf-ink);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  text-align: left;
}

.adf-filter-btn:hover {
  background: var(--adf-link-wash-06);
  border-color: var(--adf-link-wash-30);
}

.adf-filter-btn--active {
  background: var(--adf-link);
  color: white;
  border-color: var(--adf-link);
  font-weight: 500;
}

.adf-filter-btn--active:hover {
  background: var(--adf-link-deep);
  border-color: var(--adf-link-deep);
}

/* Filter button content */
.adf-filter-btn__label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.adf-filter-btn__icon {
  font-size: 1.125rem;
  line-height: 1;
}

.adf-filter-btn__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 0.375rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.2);
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: auto;
}

.adf-filter-btn--active .adf-filter-btn__count {
  background: rgba(255, 255, 255, 0.3);
}

/* Collapsible category group: parent button + chevron toggle + children */
.adf-filter-cat-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.adf-filter-cat-head {
  display: flex;
  align-items: stretch;
  gap: 4px;
}
.adf-filter-cat-head > .adf-filter-btn {
  flex: 1;
  min-width: 0;
}
.adf-filter-cat-toggle {
  /* Render before the category button (chevron on the LEFT) without
     changing the source order. Keeps tab order: button first, then toggle. */
  order: -1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  flex: 0 0 32px;
  padding: 0;
  border: 1px solid var(--adf-link-wash-20);
  border-radius: 4px;
  background: var(--adf-bg);
  color: var(--adf-ink-muted);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.adf-filter-cat-toggle:hover {
  background: var(--adf-link-wash-06);
  border-color: var(--adf-link-wash-30);
  color: var(--adf-ink);
}
.adf-filter-cat-toggle:focus-visible {
  outline: 2px solid var(--adf-link, #00e6ff);
  outline-offset: 2px;
}
.adf-filter-cat-toggle__icon {
  transition: transform 0.18s ease;
}
.adf-filter-cat-toggle[aria-expanded="true"] .adf-filter-cat-toggle__icon {
  transform: rotate(180deg);
}
.adf-filter-cat-children {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 0 4px 20px;
  /* Dashed rail sits under the chevron (chevron is 32px wide, so 16px is its
     center) to make the parent→child relationship visually obvious. */
  border-left: 1px dashed var(--adf-link-wash-20);
  margin-left: 16px;
}
.adf-filter-cat-children[hidden] { display: none; }
.adf-filter-btn--child {
  font-size: 0.82rem;
  padding: 0.5rem 0.6rem;
  background: transparent;
}
.adf-filter-btn--child .adf-filter-btn__count {
  min-width: 22px;
  height: 22px;
  font-size: 0.72rem;
  background: var(--adf-link-wash-12);
}
@media (prefers-reduced-motion: reduce) {
  .adf-filter-cat-toggle__icon { transition: none; }
}

/* Filter dot/indicator */
.adf-filter-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.375rem;
}

/* Difficulty indicator colors — using state tokens for theme consistency */
.adf-filter-dot--beginner {
  background: var(--adf-state-ok);
}

.adf-filter-dot--intermediate {
  background: var(--adf-state-warn);
}

.adf-filter-dot--advanced {
  background: var(--adf-state-fail);
}

/* Grid container */
.adf-browse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .adf-browse-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  .adf-browse-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

/* No results message */
.adf-browse-no-results {
  grid-column: 1 / -1;
  padding: 3rem 2rem;
  text-align: center;
  color: var(--adf-ink-muted);
  border: 1px dashed var(--adf-link-wash-20);
  border-radius: 8px;
  background: var(--adf-bg-wash);
}

/* Dark theme adjustments */
@media (prefers-color-scheme: dark) {
  .adf-filter-btn {
    background: var(--adf-ink-wash-06);
    border-color: var(--adf-link-wash-20);
  }

  .adf-filter-btn:hover {
    background: var(--adf-ink-wash-12);
  }

  .adf-filter-search__input {
    background: var(--adf-ink-wash-06);
  }
}

/* Hide HivePress native filter form when unified sidebar is active */
.adf-browse-layout .hp-form--listing-filter {
  display: none;
}