/**
 * Discovery Mode CSS
 * Styles specific to the discovery-first experience
 */

/* ==========================================================================
   Mode Visibility
   ========================================================================== */

/* Discovery-only elements */
.discover-only {
  display: block;
}

.mode-academic .discover-only {
  display: none !important;
}

/* Academic-only elements */
.academic-only {
  display: none;
}

.mode-academic .academic-only {
  display: block;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  padding: var(--space-2xl) var(--space-md);
  /* Background set inline in template with {{HERO_IMAGE}} */
}

.hero-content {
  max-width: 700px;
  width: 100%;
}

.hero-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: white;
  margin: 0 0 var(--space-sm);
  line-height: 1.2;
  text-shadow: 0 2px 12px rgba(0,0,0,0.6);
}

@media (min-width: 640px) {
  .hero-title {
    font-size: var(--text-3xl);
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
}

.hero-subtitle {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.95);
  margin: 0 0 var(--space-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 6px rgba(0,0,0,0.5);
}

@media (min-width: 640px) {
  .hero-subtitle {
    font-size: var(--text-lg);
  }
}

.hero-search {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.hero-search .search-container {
  width: 100%;
  max-width: 600px;
  background: rgba(255, 255, 255, 0.95);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 40px rgba(0,0,0,0.3);
  backdrop-filter: blur(10px);
}

.hero-search .search-input-wrapper {
  position: relative;
}

.hero-search .search-input {
  border: 2px solid var(--color-border);
  background: white;
}

.hero-search .search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* ==========================================================================
   Theme Categories
   ========================================================================== */

.theme-section {
  padding: var(--space-xl) 0;
}

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

.section-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.section-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: var(--space-xs) 0 0;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .theme-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .theme-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.theme-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.theme-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.theme-card .theme-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.theme-card h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
}

.theme-card .theme-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin: 0;
  display: none;
}

@media (min-width: 640px) {
  .theme-card .theme-subtitle {
    display: block;
  }
}

/* ==========================================================================
   Start Here Section
   ========================================================================== */

.start-here-section {
  background: var(--color-bg-secondary);
  padding: var(--space-xl) var(--space-md);
  margin: 0 calc(-1 * var(--space-md));
}

@media (min-width: 640px) {
  .start-here-section {
    margin: 0;
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
  }
}

.start-here-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.start-here-card {
  display: flex;
  gap: var(--space-md);
  background: var(--color-bg);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.start-here-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.start-here-card .card-cover {
  width: 80px;
  flex-shrink: 0;
}

.start-here-card .card-cover img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.start-here-card .card-content {
  flex: 1;
  min-width: 0;
}

.start-here-card .card-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.start-here-card .card-author {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-sm);
}

.start-here-card .card-why {
  font-size: var(--text-xs);
  color: var(--color-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}

/* ==========================================================================
   Results Header
   ========================================================================== */

.results-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

@media (min-width: 640px) {
  .results-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.results-header h2 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin: 0;
}

.results-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.results-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

#result-count {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.clear-filters-btn {
  padding: 6px 12px;
  font-size: var(--text-sm);
  color: var(--color-primary);
  background: transparent;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.clear-filters-btn:hover {
  background: var(--color-primary);
  color: white;
}

/* ==========================================================================
   Discovery Card Enhancements
   ========================================================================== */

.mode-discover .book-card {
  /* Add subtle discovery styling */
}

.mode-discover .book-card .why-it-matters {
  color: var(--color-primary);
  font-style: italic;
}

/* Big Ideas Display */
.ideas-list {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 0;
}

.ideas-list li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding-left: 1em;
  position: relative;
  margin-bottom: var(--space-xs);
}

.ideas-list li::before {
  content: '\u{1F4A1}';
  position: absolute;
  left: 0;
  font-size: 0.8em;
}

/* ==========================================================================
   Academic Mode Overrides
   ========================================================================== */

.mode-academic .hero {
  padding: var(--space-lg) var(--space-md);
}

.mode-academic .hero-title {
  font-size: var(--text-xl);
}

.mode-academic .hero-subtitle {
  display: none;
}

.mode-academic .book-card .why-it-matters {
  display: none;
}

.mode-academic .book-card .book-meta .effort {
  display: none;
}

.mode-academic .subject-tags {
  display: flex;
}

/* ==========================================================================
   Mobile Refinements
   ========================================================================== */

@media (max-width: 639px) {
  .refine-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--color-bg);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .refine-bar .current-filter {
    font-size: var(--text-sm);
    color: var(--color-text);
    font-weight: 500;
  }
}

/* ==========================================================================
   Toolbar
   ========================================================================== */

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Sort Dropdown */
.sort-select {
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-bg);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
}

.sort-select:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ==========================================================================
   Book Page Discovery Elements
   ========================================================================== */

.book-page .why-section {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, transparent 100%);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-xl);
}

.book-page .why-section h2 {
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin: 0 0 var(--space-md);
}

.book-page .why-summary {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
}

.book-page .modern-connections {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
}

.book-page .modern-connections h3 {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-sm);
}

.book-page .modern-connections ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.book-page .modern-connections li {
  padding: 6px 12px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text);
}

/* Big Ideas Section */
.book-page .big-ideas {
  margin-bottom: var(--space-xl);
}

.book-page .big-ideas h2 {
  font-size: var(--text-lg);
  margin: 0 0 var(--space-md);
}

.idea-card {
  background: var(--color-bg-secondary);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
}

.idea-card .idea-formal {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
}

.idea-card .idea-plain {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
  font-style: italic;
}

/* Reader Fit Section */
.book-page .reader-fit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

@media (max-width: 639px) {
  .book-page .reader-fit {
    grid-template-columns: 1fr;
  }
}

.reader-fit .good-for,
.reader-fit .not-ideal {
  padding: var(--space-md);
  border-radius: var(--radius-md);
}

.reader-fit .good-for {
  background: rgba(16, 185, 129, 0.1);
}

.reader-fit .not-ideal {
  background: rgba(239, 68, 68, 0.1);
}

.reader-fit h3 {
  font-size: var(--text-sm);
  margin: 0 0 var(--space-sm);
}

.reader-fit .good-for h3 {
  color: var(--color-success);
}

.reader-fit .not-ideal h3 {
  color: var(--color-error);
}

.reader-fit ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.reader-fit li {
  font-size: var(--text-sm);
  color: var(--color-text);
  padding: var(--space-xs) 0;
}

/* Effort Section */
.book-page .effort-section {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xl);
}

.effort-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.effort-item .effort-icon {
  font-size: 1.5rem;
}

.effort-item .effort-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.effort-item .effort-value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

/* ==========================================================================
   Collection Tags on Book Cards
   ========================================================================== */

.collection-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: var(--space-sm) 0;
}

.collection-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-size: 10px;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* ==========================================================================
   4-Pillar Discovery System
   ========================================================================== */

.pillar-section {
  padding: var(--space-xl) var(--space-md);
  background: var(--color-bg-secondary);
  margin: 0 calc(-1 * var(--space-md)) var(--space-xl);
}

@media (min-width: 640px) {
  .pillar-section {
    margin: 0 0 var(--space-xl);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
  }
}

/* Pillar Tab Navigation */
.pillar-tabs {
  display: flex;
  gap: var(--space-xs);
  overflow-x: auto;
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.pillar-tabs::-webkit-scrollbar {
  display: none;
}

.pillar-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  min-width: 90px;
}

.pillar-tab:hover {
  border-color: var(--color-primary-light);
  background: rgba(37, 99, 235, 0.05);
}

.pillar-tab.active {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary);
}

.pillar-tab .tab-icon {
  font-size: 1.5rem;
}

.pillar-tab .tab-label {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}

.pillar-tab.active .tab-label {
  color: var(--color-primary);
  font-weight: 600;
}

@media (min-width: 640px) {
  .pillar-tab {
    flex-direction: row;
    min-width: auto;
    padding: var(--space-sm) var(--space-lg);
  }

  .pillar-tab .tab-icon {
    font-size: 1.25rem;
  }

  .pillar-tab .tab-label {
    font-size: var(--text-sm);
  }
}

/* Pillar Panels */
.pillar-panels {
  position: relative;
}

.pillar-panel {
  animation: fadeIn 0.2s ease-out;
}

.pillar-panel.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Pillar Filter Chips */
.pillar-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.pillar-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--text-sm);
}

.pillar-chip:hover {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.05);
}

.pillar-chip.selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.pillar-chip .chip-icon {
  font-size: 1rem;
}

.pillar-chip .chip-label {
  font-weight: 500;
}

.pillar-chip .chip-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-bg-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.pillar-chip.selected .chip-count {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

/* Pillar Badges on Book Cards */
.pillar-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.pillar-badge {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px 6px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 10px;
  color: var(--color-text-muted);
}

.pillar-badge .badge-icon {
  font-size: 10px;
}

.pillar-badge.genre {
  background: rgba(139, 92, 246, 0.1);
  color: #7c3aed;
}

.pillar-badge.themes {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

.pillar-badge.readingMood {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
}

.pillar-badge.curiosity {
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
}

/* Pillar Index Page */
.pillar-index-page .pillar-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, #7c3aed 100%);
  color: white;
  padding: var(--space-2xl) var(--space-md);
  text-align: center;
}

.pillar-index-page .pillar-header .pillar-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  display: block;
}

.pillar-index-page .pillar-header h1 {
  font-size: var(--text-2xl);
  margin: 0 0 var(--space-sm);
}

.pillar-index-page .pillar-header .pillar-subtitle {
  opacity: 0.9;
  margin: 0;
}

.pillar-values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-xl) var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
}

.pillar-value-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}

.pillar-value-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.pillar-value-card .value-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.pillar-value-card .value-info {
  flex: 1;
  min-width: 0;
}

.pillar-value-card .value-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
}

.pillar-value-card .value-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-sm);
}

.pillar-value-card .value-count {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
}