/* =============================================================================
   filters.css: Filter sidebar, groups, pills, mobile overlay
   ============================================================================= */

/* Filter Sidebar */
/*----------------*/
#filter-sidebar {
  max-height: calc(100vh - 5rem);
  overflow-y: auto;
  scrollbar-width: thin;
  border: 1px solid var(--tf-border);
  border-radius: var(--tf-radius);
  padding: 1rem;
  background: var(--tf-surface);
}

#filter-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--tf-border);
}

#filter-panel-title {
  font-weight: 600;
  font-size: 1rem;
}

#filter-panel-actions {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

#filter-panel-actions button {
  font-size: 0.8rem;
  padding: 0.25rem 0.6rem;
  margin: 0;
}

#clear-filters:disabled {
  opacity: 1;
}

#close-filter-panel {
  display: none;
}

#filter-add-content a,
#filter-random-content button,
#filter-list-panel button {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 0.85rem;
  padding: 0.3rem 0.6rem;
  margin: 0;
}

/* Filter Groups */
/*---------------*/
.filter-group {
  margin-bottom: 1.25rem;
}

.filter-group:last-child {
  margin-bottom: 0;
}

.filter-group-toggle {
  display: flex;
  align-items: center;
  gap: 0.35em;
  width: 100%;
  background: none;
  border: none;
  box-shadow: none;
  padding: 0;
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tf-muted);
  cursor: pointer;
  text-align: left;
}

.filter-group-toggle:hover:not(:disabled) {
  color: var(--tf-accent);
  background: none;
}

.filter-group-chevron {
  font-size: 0.6rem;
  flex-shrink: 0;
  margin-left: auto;
  transition: transform 0.15s;
}

.filter-active-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25em;
  height: 1.25em;
  padding: 0 0.25em;
  background: var(--tf-accent);
  color: var(--tf-accent-fg);
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 700;
  line-height: 1;
  flex-shrink: 0;
}

.filter-group-toggle[aria-expanded="true"] .filter-group-chevron {
  transform: rotate(90deg);
}

.filter-group-content {
  display: none;
  padding-top: 0.5rem;
  position: relative;
}

.filter-group-content::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2.5rem;
  background: linear-gradient(to top, var(--tf-surface), transparent);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}

.filter-group-content.has-pill-overflow::after {
  opacity: 1;
}

#filter-quick-toggles {
  display: flex;
  gap: 1rem;
  padding-top: 1rem;
  margin-top: 0.25rem;
  border-top: 1px solid var(--tf-border);
}

.filter-group-content .filter-inline-label {
  margin-bottom: 0.5rem;
}

.filter-inline-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  font-size: 0.875rem;
}

.range-inputs {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}

.range-inputs input {
  flex: 1;
  min-width: 0;
  padding: 0.3rem 0.5rem;
  font-size: 0.875rem;
  margin: 0;
}

.range-separator {
  color: var(--tf-muted);
  flex-shrink: 0;
}

.range-warning {
  font-size: 0.8rem;
  color: var(--tf-danger);
  margin: 0 0 0.4rem 0;
}

.filter-search-within {
  width: 100%;
  margin-bottom: 0.5rem;
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
}

.filter-more-note {
  margin: 0.4rem 0 0;
  font-size: 0.75rem;
  color: var(--tf-muted);
  font-style: italic;
}


/* Pill Groups */
/*-------------*/
.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  max-height: 8rem;
  overflow-y: auto;
  scrollbar-width: thin;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: var(--tf-border-radius-pill);
  border: 1px solid var(--tf-border);
  background: transparent;
  color: var(--tf-color);
  cursor: pointer;
  font-size: 0.8rem;
  line-height: 1.4;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  user-select: none;
  box-shadow: none;
  margin: 0;
  width: auto;
}

.pill:hover {
  border-color: var(--tf-accent);
  color: #fff;
  background: var(--tf-accent);
}

.pill.active {
  background: var(--tf-accent);
  border-color: var(--tf-accent);
  color: var(--tf-accent-fg);
}

.pill.active:hover {
  background: var(--tf-accent-hover);
  border-color: var(--tf-accent-hover);
  color: var(--tf-accent-fg);
}

/* Mobile Filter Overlay */
/*-----------------------*/
#filter-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--tf-overlay-z);
  opacity: 0;
  transition: opacity 0.25s;
}

#filter-overlay.active {
  opacity: 1;
}

/* Responsive: Mobile filter overrides */
/*-------------------------------------*/
@media (max-width: 800px) {
  #filter-add-content,
  #filter-random-content,
  #filter-list-panel {
    display: none;
  }

  #mobile-list-toggle,
  #mobile-filter-toggle {
    display: block;
  }

  #close-filter-panel {
    display: flex;
  }

  #filter-sidebar {
    grid-area: unset;
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 85%;
    max-width: 320px;
    max-height: 100%;
    border-radius: 0;
    border: none;
    border-right: 1px solid var(--tf-border);
    z-index: var(--tf-sidebar-z);
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    overflow-y: auto;
  }

  #filter-sidebar.open {
    transform: translateX(0);
  }

  #filter-overlay {
    display: block;
  }
}