/**
 * Discovery System Styles
 * Search, filtering, and content discovery UI
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */

:root {
  --discovery-bg: #ffffff;
  --discovery-text: #000000;
  --discovery-border: #e0e0e0;
  --discovery-accent: #00ffff;
  --discovery-hover: #f5f5f5;
  --discovery-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --discovery-radius: 4px;
  --discovery-transition: 200ms ease;
}

/* ==========================================================================
   Discovery Page Layout
   ========================================================================== */

#discovery {
  min-height: 100vh;
  background: var(--discovery-bg);
  padding: 2rem;
}

.discovery-container {
  max-width: 1400px;
  margin: 0 auto;
}

.discovery-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--discovery-border);
}

.discovery-header h1 {
  font-size: 2rem;
  letter-spacing: 0.2em;
  margin: 0;
}

/* ==========================================================================
   Search Input
   ========================================================================== */

.discovery-search {
  margin-bottom: 1.5rem;
}

#discoverySearchInput {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1.125rem;
  border: 2px solid var(--discovery-border);
  border-radius: var(--discovery-radius);
  background: var(--discovery-bg);
  transition: border-color var(--discovery-transition);
}

#discoverySearchInput:focus {
  outline: none;
  border-color: var(--discovery-accent);
}

#discoverySearchInput::placeholder {
  color: #999;
}

/* ==========================================================================
   Quick Filters
   ========================================================================== */

.discovery-quick-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.quick-filter-btn {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid var(--discovery-border);
  border-radius: var(--discovery-radius);
  background: transparent;
  cursor: pointer;
  transition: all var(--discovery-transition);
}

.quick-filter-btn:hover {
  background: var(--discovery-hover);
}

.quick-filter-btn--active {
  background: var(--discovery-text);
  color: var(--discovery-bg);
  border-color: var(--discovery-text);
}

/* ==========================================================================
   Filter Panel
   ========================================================================== */

.discovery-filters {
  margin-bottom: 2rem;
  border: 1px solid var(--discovery-border);
  border-radius: var(--discovery-radius);
}

.discovery-filters summary {
  padding: 1rem;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.discovery-filters summary:hover {
  background: var(--discovery-hover);
}

.discovery-filters[open] summary {
  border-bottom: 1px solid var(--discovery-border);
}

.filter-panel-content {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.filter-group-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #666;
}

.filter-group-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
}

.filter-checkbox input {
  accent-color: var(--discovery-accent);
}

/* Year Range */
.filter-year-range {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-year-input {
  width: 5rem;
  padding: 0.5rem;
  border: 1px solid var(--discovery-border);
  border-radius: var(--discovery-radius);
}

/* ==========================================================================
   Tag Cloud
   ========================================================================== */

#tagCloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 1rem;
  background: var(--discovery-hover);
  border-radius: var(--discovery-radius);
}

.tag-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--discovery-border);
  border-radius: 2rem;
  background: var(--discovery-bg);
  cursor: pointer;
  transition: all var(--discovery-transition);
  line-height: 1.4;
}

.tag-btn:hover {
  border-color: var(--discovery-text);
}

.tag-btn--active {
  background: var(--discovery-text);
  color: var(--discovery-bg);
  border-color: var(--discovery-text);
}

.tag-count {
  font-size: 0.7em;
  opacity: 0.7;
}

/* ==========================================================================
   Results Grid
   ========================================================================== */

.discovery-results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

#resultCount {
  font-size: 0.875rem;
  color: #666;
}

#sortSelect {
  padding: 0.5rem;
  border: 1px solid var(--discovery-border);
  border-radius: var(--discovery-radius);
  background: var(--discovery-bg);
}

#resultsGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* ==========================================================================
   Result Card
   ========================================================================== */

.result-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--discovery-border);
  border-radius: var(--discovery-radius);
  background: var(--discovery-bg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--discovery-transition);
}

.result-card:hover {
  box-shadow: var(--discovery-shadow);
  transform: translateY(-2px);
}

.result-card:focus {
  outline: 2px solid var(--discovery-accent);
  outline-offset: 2px;
}

.result-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem;
  border-left: 4px solid;
}

.result-card__chamber {
  padding: 0.25rem 0.5rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: white;
  border-radius: 2px;
}

.result-card__type {
  font-size: 1rem;
}

.result-card__image {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.result-card__body {
  flex: 1;
  padding: 1rem;
}

.result-card__title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.result-card__subtitle {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  color: #666;
}

.result-card__desc {
  margin: 0;
  font-size: 0.875rem;
  color: #444;
  line-height: 1.5;
}

.result-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--discovery-border);
}

.result-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.result-tag {
  padding: 0.125rem 0.5rem;
  font-size: 0.625rem;
  text-transform: lowercase;
  background: var(--discovery-hover);
  border-radius: 2px;
}

.share-btn {
  padding: 0.5rem;
  border: none;
  background: transparent;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity var(--discovery-transition);
}

.share-btn:hover {
  opacity: 1;
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.discovery-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.page-btn {
  min-width: 2.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  border: 1px solid var(--discovery-border);
  border-radius: var(--discovery-radius);
  background: var(--discovery-bg);
  cursor: pointer;
  transition: all var(--discovery-transition);
}

.page-btn:hover:not(:disabled) {
  background: var(--discovery-hover);
}

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

.page-btn--active {
  background: var(--discovery-text);
  color: var(--discovery-bg);
  border-color: var(--discovery-text);
}

.page-ellipsis {
  padding: 0 0.5rem;
  color: #999;
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.discovery-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
}

/* ==========================================================================
   Global Search Modal
   ========================================================================== */

.search-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  pointer-events: none; /* Prevent intercepting clicks when hidden */
}

/* Enable flex layout + pointer events when modal is shown */
.search-modal.db {
  display: flex;
  pointer-events: auto;
}

/* Ensure hidden modal never intercepts (display: none from Tachyons .dn) */
.search-modal.dn {
  pointer-events: none;
}

.search-modal-content {
  width: 100%;
  max-width: 600px;
  max-height: 70vh;
  background: var(--discovery-bg);
  border-radius: var(--discovery-radius);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  pointer-events: auto; /* Content is always clickable when visible */
}

#globalSearchInput {
  width: 100%;
  padding: 1.25rem 1.5rem;
  font-size: 1.25rem;
  border: none;
  border-bottom: 1px solid var(--discovery-border);
  background: transparent;
}

#globalSearchInput:focus {
  outline: none;
}

#globalSearchResults {
  max-height: calc(70vh - 4rem);
  overflow-y: auto;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  border-bottom: 1px solid var(--discovery-border);
  transition: background var(--discovery-transition);
}

.search-result-item:hover,
.search-result-item.selected {
  background: var(--discovery-hover);
}

.search-result-chamber {
  flex-shrink: 0;
  padding: 0.25rem 0.5rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: white;
  border-radius: 2px;
}

.search-result-content {
  flex: 1;
  min-width: 0;
}

.search-result-title {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-title mark {
  background: var(--discovery-accent);
  color: inherit;
}

.search-result-desc {
  font-size: 0.75rem;
  color: #666;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-desc mark {
  background: rgba(0, 255, 255, 0.3);
  color: inherit;
}

.search-empty {
  padding: 2rem;
  text-align: center;
  color: #555;
}

.search-modal-hint {
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  color: #555;
  background: var(--discovery-hover);
  display: flex;
  justify-content: space-between;
}

.search-modal-hint kbd {
  padding: 0.125rem 0.5rem;
  font-size: 0.625rem;
  background: var(--discovery-bg);
  border: 1px solid var(--discovery-border);
  border-radius: 2px;
}

/* ==========================================================================
   Share Toast
   ========================================================================== */

.share-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  background: var(--discovery-text);
  color: var(--discovery-bg);
  border-radius: var(--discovery-radius);
  opacity: 0;
  transition: all 300ms ease;
  pointer-events: none;
  z-index: 10000;
}

.share-toast--visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.share-toast--success {
  background: #2ecc71;
  color: white;
}

.share-toast--error {
  background: #e74c3c;
  color: white;
}

/* ==========================================================================
   Recommendations
   ========================================================================== */

.discovery-recommendations {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--discovery-border);
}

.discovery-recommendations h2 {
  margin-bottom: 1.5rem;
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

#recommendationsGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  #discovery {
    padding: 1rem;
  }

  .discovery-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .discovery-header h1 {
    font-size: 1.5rem;
  }

  #discoverySearchInput {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }

  .filter-panel-content {
    grid-template-columns: 1fr;
  }

  #resultsGrid {
    grid-template-columns: 1fr;
  }

  .search-modal {
    padding: 0;
    align-items: stretch;
  }

  .search-modal-content {
    max-width: 100%;
    max-height: 100vh;
    border-radius: 0;
  }

  #globalSearchInput {
    font-size: 1rem;
  }

  .discovery-pagination {
    flex-wrap: wrap;
  }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .result-card,
  .tag-btn,
  .quick-filter-btn,
  .page-btn,
  .search-result-item,
  .share-toast {
    transition: none;
  }

  .result-card:hover {
    transform: none;
  }
}

/* ==========================================================================
   Print
   ========================================================================== */

@media print {
  .discovery-search,
  .discovery-quick-filters,
  .discovery-filters,
  #tagCloud,
  .discovery-pagination,
  .search-modal,
  .share-btn,
  .share-toast {
    display: none !important;
  }

  #resultsGrid {
    display: block;
  }

  .result-card {
    break-inside: avoid;
    page-break-inside: avoid;
    margin-bottom: 1rem;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}