/* ==========================================
   FILTER SYSTEM STYLES
   ========================================== */

.filter-system {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-base);
  margin-bottom: var(--space-6);
  overflow: hidden;
}

.filter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.filter-title-section {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.filter-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-800);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.filter-icon {
  font-size: var(--font-size-2xl);
}

.active-filter-count {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.filter-header-actions {
  display: flex;
  gap: var(--space-2);
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  background: var(--color-white);
  color: var(--color-gray-700);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-base);
}

.filter-btn:hover {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
}

.filter-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.filter-btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.filter-btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.filter-btn--ghost {
  border: none;
  background: transparent;
}

.filter-collapse-icon {
  font-size: var(--font-size-sm);
  transition: var(--transition-base);
}

.filter-content {
  padding: var(--space-6);
  transition: var(--transition-base);
}

.filter-content--collapsed {
  display: none;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.filter-section {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--color-gray-50);
}

.filter-section--full {
  grid-column: 1 / -1;
}

.filter-section--half {
  grid-column: span 1;
  max-width: 100%;
}

.filter-label {
  display: flex;
  align-items: center;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
  margin-bottom: var(--space-4);
  gap: var(--space-2);
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.filter-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  background: var(--color-white);
  transition: var(--transition-base);
}

.filter-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.filter-input--search {
  padding-right: var(--space-10);
}

.search-clear-btn {
  position: absolute;
  right: var(--space-3);
  background: none;
  border: none;
  color: var(--color-gray-400);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-base);
  transition: var(--transition-base);
}

.search-clear-btn:hover {
  color: var(--color-gray-600);
  background: var(--color-gray-100);
}

.date-range-inputs {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.filter-input--date {
  flex: 1;
}

.date-separator {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

.date-presets {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.date-preset-btn {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  background: var(--color-white);
  color: var(--color-gray-600);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: var(--transition-base);
}

.date-preset-btn:hover {
  background: var(--color-gray-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-options {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.filter-options--checkbox {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.filter-options--radio {
  grid-template-columns: 1fr;
}

.filter-option {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: var(--transition-base);
  gap: var(--space-2);
}

.filter-option:hover {
  background: var(--color-white);
}

.filter-option input {
  margin: 0;
  cursor: pointer;
}

.filter-option-checkmark {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  position: relative;
  background: var(--color-white);
  transition: var(--transition-base);
}

.filter-option input:checked + .filter-option-checkmark {
  background: var(--option-color, var(--color-primary));
  border-color: var(--option-color, var(--color-primary));
}

.filter-option input:checked + .filter-option-checkmark::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
}

.filter-option-label {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  cursor: pointer;
}

.filter-section-controls {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
}

.filter-control-btn {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  background: var(--color-white);
  color: var(--color-gray-600);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: var(--transition-base);
}

.filter-control-btn:hover:not(:disabled) {
  background: var(--color-gray-50);
  color: var(--color-primary);
}

.filter-control-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.active-filters {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}

.active-filters-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.active-filters-label {
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
}

.active-filters-clear {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  cursor: pointer;
  border: none;
  background: none;
}

.active-filters-clear:hover {
  text-decoration: underline;
}

.active-filters-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.active-filter-tag {
  display: inline-flex;
  align-items: center;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  gap: var(--space-2);
}

.active-filter-text {
  font-weight: var(--font-weight-medium);
}

.active-filter-remove {
  background: none;
  border: none;
  color: var(--color-white);
  cursor: pointer;
  padding: 0;
  font-size: var(--font-size-xs);
  opacity: 0.8;
  transition: var(--transition-base);
}

.active-filter-remove:hover {
  opacity: 1;
}

.filter-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-gray-50);
}

.filter-stats {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

.filter-result-count {
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-size: var(--font-size-lg);
}

.filter-actions {
  display: flex;
  gap: var(--space-3);
}

.filter-btn--secondary {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.filter-btn--secondary:hover {
  background: var(--color-gray-200);
  border-color: var(--color-gray-400);
}

/* ==========================================
   MULTI-SELECT DROPDOWN (Authority filter)
   ========================================== */

.filter-multiselect {
  position: relative;
}

.filter-multiselect-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3, 8px) var(--space-4, 12px);
  border: 1px solid var(--color-gray-300, #d1d5db);
  border-radius: var(--radius-base, 6px);
  background: var(--color-white, #fff);
  font-size: var(--font-size-base, 14px);
  color: var(--color-gray-700, #374151);
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-align: left;
  line-height: 1.5;
}

.filter-multiselect-trigger:hover {
  border-color: var(--color-gray-400, #9ca3af);
}

.filter-multiselect-trigger:focus {
  outline: none;
  border-color: var(--color-primary, #3b82f6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.filter-multiselect-trigger-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.filter-multiselect-trigger-arrow {
  margin-left: var(--space-2, 6px);
  font-size: 10px;
  color: var(--color-gray-500, #6b7280);
  transition: transform 0.2s;
}

.filter-multiselect-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--color-white, #fff);
  border: 1px solid var(--color-gray-200, #e5e7eb);
  border-radius: var(--radius-md, 8px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
  z-index: 50;
  overflow: hidden;
}

.filter-multiselect-dropdown.open {
  display: block;
}

.filter-multiselect-actions {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2, 6px) var(--space-3, 8px);
  border-bottom: 1px solid var(--color-gray-200, #e5e7eb);
  background: var(--color-gray-50, #f9fafb);
}

.filter-multiselect-actions a {
  font-size: var(--font-size-xs, 12px);
  color: var(--color-primary, #3b82f6);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
}

.filter-multiselect-actions a:hover {
  text-decoration: underline;
}

.filter-multiselect-options {
  max-height: 240px;
  overflow-y: auto;
  padding: var(--space-1, 4px) 0;
}

.filter-multiselect-option {
  display: flex;
  align-items: center;
  gap: var(--space-2, 6px);
  padding: var(--space-2, 6px) var(--space-3, 8px);
  cursor: pointer;
  transition: background 0.15s;
  font-size: var(--font-size-sm, 13px);
}

.filter-multiselect-option:hover {
  background: var(--color-gray-50, #f9fafb);
}

.filter-multiselect-option input[type="checkbox"] {
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary, #3b82f6);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.filter-multiselect-option-label {
  flex: 1;
  color: var(--color-gray-700, #374151);
}

.filter-multiselect-option-count {
  color: var(--color-gray-400, #9ca3af);
  font-size: var(--font-size-xs, 12px);
}