/* Filter- und Suchpanel (Phase 4). Struktur wird von
   js/filters/filterPanel.js in #filter-panel eingehängt.

   <details>/<summary> übernimmt das Auf-/Zuklappen JS-frei - sowohl mobil
   (Panel oberhalb der Liste) als auch auf Desktop (>=1024px, Panel als
   eigene Spalte rechts neben der Ergebnisliste, siehe css/responsive.css). */

.filter-panel {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.filter-panel__details {
  padding: 0 var(--space-md);
}

.filter-panel__details[open] {
  padding-bottom: var(--space-md);
}

.filter-panel__summary {
  padding: var(--space-md) 0;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.filter-panel__summary::-webkit-details-marker {
  display: none;
}

.filter-panel__summary::before {
  content: '▸ ';
}

.filter-panel__details[open] > .filter-panel__summary::before {
  content: '▾ ';
}

.filter-panel__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.filter-panel__section {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  border: none;
  border-top: 1px solid var(--color-border);
  padding: var(--space-sm) 0 0;
  margin: 0;
}

.filter-panel__section-label {
  padding: 0;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
}

.filter-panel__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1 1 160px;
}

.filter-panel__label {
  font-size: 0.85rem;
  font-weight: 600;
}

.filter-panel__field input,
.filter-panel__field select,
.filter-panel__distance input,
.filter-panel__distance select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
  font: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  width: 100%;
}

.filter-panel__row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.filter-panel__categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  max-height: 180px;
  overflow-y: auto;
  padding: var(--space-xs) 0;
}

.filter-panel__category-option,
.filter-panel__checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.85rem;
  cursor: pointer;
}

.filter-panel__category-swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.filter-panel__checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
}

.filter-panel__distance {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  max-width: 220px;
}

.filter-panel__hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.filter-panel__hint[hidden] {
  display: none;
}

.filter-panel__location-btn[hidden] {
  display: none;
}

.filter-panel__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.filter-panel__count {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-right: auto;
}

@media (min-width: 1024px) {
  .filter-panel {
    border-bottom: none;
  }
}