/**
 * Corpus Filter Selector Component Styles
 *
 * Three-column layout matching Cognaire Respond aesthetic
 */

.corpus-filter-selector {
  display: flex;
  flex-direction: column;
  background: var(--surface-default);
  border-radius: 4px;
  overflow: hidden;
  height: 100%;
  max-height: 600px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Favorites Section */
.corpus-filter-selector__favorites {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border-subtle);
}

.corpus-filter-selector__favorites label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin: 0;
}

.corpus-filter-selector__favorites-select {
  flex: 1;
  max-width: 300px;
  padding: 6px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  background: var(--surface-default);
  color: var(--text-primary);
  font-size: 14px;
}

.corpus-filter-selector__favorites-select:focus {
  outline: none;
  border-color: var(--interactive-primary);
  box-shadow: 0 0 0 2px var(--interactive-hover);
}

/* Main Three-Column Layout */
.corpus-filter-selector__main {
  display: grid;
  grid-template-columns: 160px 1fr 280px;
  flex: 1;
  overflow: hidden;
}

/* Compact Mode - Two-Column Layout (no summary panel) */
.corpus-filter-selector--compact .corpus-filter-selector__main {
  grid-template-columns: 160px 1fr;
}

/* Left Navigation Column */
.corpus-filter-selector__left-nav {
  display: flex;
  flex-direction: column;
  background: var(--surface-background);
  border-right: 1px solid var(--border-subtle);
  padding: 12px 0;
}

.corpus-filter-selector__left-nav-title {
  padding: 8px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.corpus-filter-selector__nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 400;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
}

.corpus-filter-selector__nav-item:hover {
  background: var(--interactive-hover);
}

.corpus-filter-selector__nav-item--active {
  background: var(--interactive-hover);
  color: var(--interactive-primary);
  border-left-color: var(--interactive-primary);
  font-weight: 500;
}

.corpus-filter-selector__nav-item i {
  width: 16px;
  font-size: 14px;
  text-align: center;
}

/* Selection count in compact mode */
.corpus-filter-selector__nav-count {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
}

.corpus-filter-selector__nav-item--active .corpus-filter-selector__nav-count {
  color: var(--interactive-primary);
}

/* Options Panel (Middle Column) */
.corpus-filter-selector__options {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background: var(--surface-default);
}

.corpus-filter-selector__panel {
  padding: 20px;
}

.corpus-filter-selector__section {
  margin-bottom: 24px;
}

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

.corpus-filter-selector__section-header {
  margin-bottom: 12px;
}

.corpus-filter-selector__section-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.corpus-filter-selector__section-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Hide sections on narrow screens until they're ready */
.corpus-filter-selector__section--hidden-narrow {
  display: none;
}

/* Horizontal layout for corpus sections on wide screens */
@media (min-width: 1200px) {
  .corpus-filter-selector__panel--corpus-horizontal {
    display: flex;
    flex-direction: row;
    gap: 24px;
    align-items: flex-start;
  }

  .corpus-filter-selector__panel--corpus-horizontal .corpus-filter-selector__section {
    flex: 1;
    margin-bottom: 0;
    min-width: 0; /* Allow flex items to shrink below content size */
  }

  .corpus-filter-selector__panel--corpus-horizontal .corpus-filter-selector__section:not(:last-child) {
    border-right: 1px solid var(--border-subtle);
    padding-right: 24px;
  }

  /* On wide screens, always show sections (reserve space) even when hidden on narrow */
  .corpus-filter-selector__panel--corpus-horizontal .corpus-filter-selector__section--hidden-narrow {
    display: flex;
    flex-direction: column;
  }
}

/* Radio Group (for single-select items like corpus) */
.corpus-filter-selector__radio-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.corpus-filter-selector__radio-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.15s ease;
  font-size: 14px;
  color: var(--text-primary);
  margin: 0;
}

.corpus-filter-selector__radio-item:hover {
  background: var(--surface-alt);
}

.corpus-filter-selector__radio-item input[type="radio"] {
  margin: 0;
  cursor: pointer;
  width: auto;
  flex-shrink: 0;
}

.corpus-filter-selector__radio-item span {
  flex: 1;
}

/* Checkbox Group (for multi-select - vertical list) */
.corpus-filter-selector__checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 200px;
  overflow-y: auto;
  padding: 2px;
}

.corpus-filter-selector__checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.15s ease;
  font-size: 14px;
  color: var(--text-primary);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.corpus-filter-selector__checkbox-item:hover {
  background: var(--surface-alt);
}

.corpus-filter-selector__checkbox-item input[type="checkbox"] {
  margin: 0;
  cursor: pointer;
  width: auto;
  flex-shrink: 0;
}

.corpus-filter-selector__checkbox-item span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Checkbox Grid (for topics/types - grid layout like existing modal) */
.corpus-filter-selector__checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid var(--border-subtle);
  padding: 12px;
  border-radius: 4px;
  background: var(--surface-background);
}

.corpus-filter-selector__checkbox-grid .corpus-filter-selector__checkbox-item {
  padding: 4px 6px;
  font-size: 13px;
}

/* Unit domain label */
.corpus-filter-selector__unit-domain {
  font-size: 11px;
  color: var(--text-secondary);
  margin-left: 4px;
  font-style: italic;
}

/* Include children toggle */
.corpus-filter-selector__include-children {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.corpus-filter-selector__include-children .corpus-filter-selector__checkbox-item {
  font-weight: 500;
}

/* Search Input */
.corpus-filter-selector__search {
  width: 100%;
  margin-bottom: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-size: 14px;
  background: var(--surface-default);
  color: var(--text-primary);
}

.corpus-filter-selector__search:focus {
  outline: none;
  border-color: var(--interactive-primary);
  box-shadow: 0 0 0 2px var(--interactive-hover);
}

.corpus-filter-selector__search::placeholder {
  color: var(--text-secondary);
}

/* Empty State */
.corpus-filter-selector__empty {
  padding: 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
  font-style: italic;
}

/* Selection Summary Column (Right) */
.corpus-filter-selector__summary {
  display: flex;
  flex-direction: column;
  background: var(--surface-background);
  border-left: 1px solid var(--border-subtle);
  overflow-y: auto;
}

.corpus-filter-selector__summary-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--surface-default);
}

.corpus-filter-selector__summary-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.corpus-filter-selector__summary-content {
  padding: 16px;
  flex: 1;
  overflow-y: auto;
}

.corpus-filter-selector__summary-group {
  margin-bottom: 20px;
}

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

.corpus-filter-selector__summary-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.corpus-filter-selector__summary-group-header span {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.corpus-filter-selector__summary-clear {
  background: none;
  border: none;
  color: var(--interactive-primary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}

.corpus-filter-selector__summary-clear:hover {
  text-decoration: underline;
}

.corpus-filter-selector__summary-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Chip Styles */
.corpus-filter-selector__chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 10px;
  background: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  font-size: 12px;
  color: var(--text-primary);
  max-width: 100%;
}

.corpus-filter-selector__chip-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.corpus-filter-selector__chip-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  padding: 0;
  border: none;
  background: var(--color-transparent-dark-10);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.corpus-filter-selector__chip-remove:hover {
  background: var(--color-transparent-dark-20);
  color: var(--text-primary);
}

.corpus-filter-selector__chip-remove i {
  font-size: 8px;
}

/* Footer Actions */
.corpus-filter-selector__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-top: 1px solid var(--border-subtle);
  background: var(--surface-default);
}

.corpus-filter-selector__footer-actions {
  display: flex;
  gap: 8px;
}

/* Scrollbar Styling */
.corpus-filter-selector__options::-webkit-scrollbar,
.corpus-filter-selector__summary::-webkit-scrollbar,
.corpus-filter-selector__summary-content::-webkit-scrollbar,
.corpus-filter-selector__checkbox-group::-webkit-scrollbar,
.corpus-filter-selector__checkbox-grid::-webkit-scrollbar {
  width: 8px;
}

.corpus-filter-selector__options::-webkit-scrollbar-track,
.corpus-filter-selector__summary::-webkit-scrollbar-track,
.corpus-filter-selector__summary-content::-webkit-scrollbar-track,
.corpus-filter-selector__checkbox-group::-webkit-scrollbar-track,
.corpus-filter-selector__checkbox-grid::-webkit-scrollbar-track {
  background: var(--surface-background);
}

.corpus-filter-selector__options::-webkit-scrollbar-thumb,
.corpus-filter-selector__summary::-webkit-scrollbar-thumb,
.corpus-filter-selector__summary-content::-webkit-scrollbar-thumb,
.corpus-filter-selector__checkbox-group::-webkit-scrollbar-thumb,
.corpus-filter-selector__checkbox-grid::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}

.corpus-filter-selector__options::-webkit-scrollbar-thumb:hover,
.corpus-filter-selector__summary::-webkit-scrollbar-thumb:hover,
.corpus-filter-selector__summary-content::-webkit-scrollbar-thumb:hover,
.corpus-filter-selector__checkbox-group::-webkit-scrollbar-thumb:hover,
.corpus-filter-selector__checkbox-grid::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Responsive adjustments */
@media (max-width: 1200px) {
  .corpus-filter-selector__main {
    grid-template-columns: 140px 1fr 240px;
  }
}

@media (max-width: 900px) {
  .corpus-filter-selector__main {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }

  .corpus-filter-selector__left-nav {
    flex-direction: row;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    padding: 8px 12px;
    overflow-x: auto;
  }

  .corpus-filter-selector__left-nav-title {
    display: none;
  }

  .corpus-filter-selector__nav-item {
    border-left: none;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
  }

  .corpus-filter-selector__nav-item--active {
    border-left: none;
    border-bottom-color: var(--interactive-primary);
  }

  .corpus-filter-selector__summary {
    border-left: none;
    border-top: 1px solid var(--border-subtle);
    max-height: 200px;
  }

  .corpus-filter-selector__checkbox-grid {
    grid-template-columns: 1fr;
  }
}

/* Select All/None Controls */
.filter-section__controls {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
  padding: 4px 0;
}

.filter-section__select-link {
  color: var(--interactive-primary);
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  user-select: none;
}

.filter-section__select-link:hover {
  text-decoration: underline;
  color: var(--interactive-primary-hover);
}

.filter-section__divider {
  color: var(--text-tertiary);
  font-size: 13px;
}