/**
 * Book Catalog Styles
 * 
 * Specific styles for the book catalog page including:
 * - Book grid layout with more cards
 * - 3:2 aspect ratio for book covers
 * - Responsive adjustments
 * - Filter components
 * - Personalized sections
 * 
 * Requirements: 11.1-11.12, 12.1-12.8
 */

/* Book Grid - More cards per row */
.books-layout .articles-grid {
    display: grid;
    gap: var(--spacing-4, 16px);
}

/* Mobile: 2 columns for books (more compact) */
@media (max-width: 767px) {
    .books-layout .articles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-3, 12px);
    }
}

/* Tablet: 4 columns */
@media (min-width: 768px) and (max-width: 1199px) {
    .books-layout .articles-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-4, 16px);
    }
}

/* Desktop: 6 columns */
@media (min-width: 1200px) {
    .books-layout .articles-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: var(--spacing-5, 20px);
    }
}

/* Book Cover - 3:2 Aspect Ratio */
.books-layout .content-card__cover {
    position: relative;
    width: 100%;
    padding-bottom: 150%; /* 3:2 aspect ratio (2/3 * 100 = 66.67%, but for portrait 3/2 * 100 = 150%) */
    overflow: hidden;
    background: var(--color-gray-100, #f3f4f6);
    border-radius: var(--radius-md, 8px);
}

.books-layout .content-card__cover-link {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.books-layout .content-card__image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.books-layout .content-card__placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-50, #f0f9ff) 0%, var(--color-primary-100, #e0f2fe) 100%);
}

.books-layout .content-card__placeholder-icon {
    font-size: 3rem;
    opacity: 0.5;
}

/* Compact title for more cards */
.books-layout .content-card__title {
    font-size: var(--font-size-sm, 14px);
    line-height: 1.4;
    margin-bottom: var(--spacing-1, 4px);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Hide excerpt in grid view for books */
.books-layout .articles-grid--grid .content-card__excerpt {
    display: none;
}

/* Compact author info */
.books-layout .content-card__author {
    font-size: var(--font-size-xs, 12px);
    margin-bottom: var(--spacing-1, 4px);
}

.books-layout .content-card__author-avatar {
    width: 16px;
    height: 16px;
}

.books-layout .content-card__author-placeholder {
    width: 16px;
    height: 16px;
    font-size: 10px;
}

/* Compact metadata */
.books-layout .content-card__meta {
    font-size: var(--font-size-xs, 12px);
}

/* List view adjustments for books */
.books-layout .articles-grid--list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4, 16px);
}

.books-layout .articles-grid--list .content-card {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-4, 16px);
}

.books-layout .articles-grid--list .content-card__cover {
    width: 200px;
    min-width: 200px;
    padding-bottom: 300px; /* 3:2 aspect ratio for fixed width */
}

.books-layout .articles-grid--list .content-card__content {
    flex: 1;
}

.books-layout .articles-grid--list .content-card__title {
    font-size: var(--font-size-lg, 18px);
    -webkit-line-clamp: 3;
    line-clamp: 3;
}

.books-layout .articles-grid--list .content-card__excerpt {
    display: block;
}

/* Compact view adjustments */
.books-layout .articles-grid--compact {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
}

.books-layout .articles-grid--compact .content-card__title {
    font-size: var(--font-size-xs, 12px);
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

.books-layout .articles-grid--compact .content-card__author {
    font-size: 10px;
}

.books-layout .articles-grid--compact .content-card__meta {
    font-size: 10px;
}

/* Mobile list view */
@media (max-width: 768px) {
    .books-layout .articles-grid--list .content-card {
        flex-direction: column;
    }
    
    .books-layout .articles-grid--list .content-card__cover {
        width: 100%;
        min-width: 100%;
        padding-bottom: 150%; /* Back to 3:2 for full width */
    }
}

/* Badges positioning for book covers */
.books-layout .content-card__badges {
    position: absolute;
    top: var(--spacing-2, 8px);
    left: var(--spacing-2, 8px);
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1, 4px);
}

.books-layout .content-card__badge {
    padding: var(--spacing-1, 4px) var(--spacing-2, 8px);
    font-size: var(--font-size-xs, 12px);
    border-radius: var(--radius-sm, 4px);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    backdrop-filter: blur(4px);
}

/* Edit button positioning */
.books-layout .content-card__edit {
    position: absolute;
    top: var(--spacing-2, 8px);
    right: var(--spacing-2, 8px);
    z-index: 2;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full, 9999px);
    font-size: 14px;
    transition: all 0.2s ease;
}

.books-layout .content-card__edit:hover {
    background: white;
    transform: scale(1.1);
}

/* Universe badge for books */
.books-layout .content-card__universe {
    font-size: var(--font-size-xs, 12px);
    margin-bottom: var(--spacing-1, 4px);
}

.books-layout .content-card__universe-icon {
    font-size: 12px;
}

/* Hover effects */
.books-layout .content-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.books-layout .content-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Loading skeleton for books */
.books-layout .article-skeleton .content-card__cover {
    padding-bottom: 150%; /* 3:2 aspect ratio */
}

/* ============================================
   Personalized Sections
   ============================================ */

/* For You Section */
.books-for-you {
    margin-bottom: var(--spacing-8, 32px);
}

.books-for-you__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4, 16px);
}

.books-for-you__title {
    font-size: var(--font-size-xl, 20px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--color-text, #1e293b);
}

.books-for-you__link {
    font-size: var(--font-size-sm, 14px);
    color: var(--color-primary, #2563eb);
    text-decoration: none;
    transition: color var(--transition-fast, 150ms ease);
}

.books-for-you__link:hover {
    color: var(--color-primary-hover, #1d4ed8);
}

/* Continue Reading Section */
.books-continue-reading {
    margin-bottom: var(--spacing-8, 32px);
}

.books-continue-reading__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4, 16px);
}

.books-continue-reading__title {
    font-size: var(--font-size-xl, 20px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--color-text, #1e293b);
}

.books-continue-reading__progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-bg-secondary, #f8fafc);
    border-radius: 0 0 var(--radius-md, 8px) var(--radius-md, 8px);
    overflow: hidden;
}

.books-continue-reading__progress-bar {
    height: 100%;
    background: var(--color-primary, #2563eb);
    transition: width 0.3s ease;
}

/* ============================================
   Featured Book Hero
   ============================================ */

.featured-book {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary-light, #dbeafe) 0%, var(--color-bg-secondary, #f8fafc) 100%);
    border-radius: var(--radius-xl, 12px);
    padding: var(--spacing-8, 32px);
    margin-bottom: var(--spacing-8, 32px);
    overflow: hidden;
}

.featured-book::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.5) 100%);
    pointer-events: none;
}

.featured-book__content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.featured-book__badge {
    display: inline-block;
    padding: var(--spacing-1, 4px) var(--spacing-3, 12px);
    background: var(--color-primary, #2563eb);
    color: white;
    font-size: var(--font-size-xs, 12px);
    font-weight: var(--font-weight-semibold, 600);
    border-radius: var(--radius-full, 9999px);
    margin-bottom: var(--spacing-3, 12px);
}

.featured-book__title {
    font-size: var(--font-size-3xl, 30px);
    font-weight: var(--font-weight-bold, 700);
    margin-bottom: var(--spacing-3, 12px);
    line-height: 1.2;
}

.featured-book__author {
    font-size: var(--font-size-lg, 18px);
    color: var(--color-text-secondary, #64748b);
    margin-bottom: var(--spacing-4, 16px);
}

.featured-book__description {
    font-size: var(--font-size-base, 16px);
    line-height: 1.6;
    color: var(--color-text-secondary, #64748b);
    margin-bottom: var(--spacing-6, 24px);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.featured-book__actions {
    display: flex;
    gap: var(--spacing-3, 12px);
}

.featured-book__btn {
    padding: var(--spacing-3, 12px) var(--spacing-5, 20px);
    border-radius: var(--radius-md, 8px);
    font-weight: var(--font-weight-medium, 500);
    text-decoration: none;
    transition: all var(--transition-fast, 150ms ease);
}

.featured-book__btn--primary {
    background: var(--color-primary, #2563eb);
    color: white;
}

.featured-book__btn--primary:hover {
    background: var(--color-primary-hover, #1d4ed8);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.featured-book__btn--secondary {
    background: white;
    color: var(--color-text, #1e293b);
    border: 1px solid var(--color-border, #e2e8f0);
}

.featured-book__btn--secondary:hover {
    border-color: var(--color-primary, #2563eb);
    color: var(--color-primary, #2563eb);
}

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

.books-empty-state {
    text-align: center;
    padding: var(--spacing-12, 48px) var(--spacing-4, 16px);
}

.books-empty-state__icon {
    font-size: 4rem;
    opacity: 0.3;
    margin-bottom: var(--spacing-4, 16px);
}

.books-empty-state__title {
    font-size: var(--font-size-xl, 20px);
    font-weight: var(--font-weight-semibold, 600);
    margin-bottom: var(--spacing-2, 8px);
}

.books-empty-state__description {
    color: var(--color-text-secondary, #64748b);
    margin-bottom: var(--spacing-4, 16px);
}

.books-empty-state__action {
    display: inline-block;
    padding: var(--spacing-3, 12px) var(--spacing-5, 20px);
    background: var(--color-primary, #2563eb);
    color: white;
    border-radius: var(--radius-md, 8px);
    text-decoration: none;
    transition: all var(--transition-fast, 150ms ease);
}

.books-empty-state__action:hover {
    background: var(--color-primary-hover, #1d4ed8);
    transform: translateY(-2px);
}

/* ============================================
   Mobile Optimizations
   ============================================ */

@media (max-width: 768px) {
    .featured-book {
        padding: var(--spacing-6, 24px) var(--spacing-4, 16px);
    }
    
    .featured-book__title {
        font-size: var(--font-size-2xl, 24px);
    }
    
    .featured-book__author {
        font-size: var(--font-size-base, 16px);
    }
    
    .featured-book__description {
        font-size: var(--font-size-sm, 14px);
        -webkit-line-clamp: 2;
    }
    
    .featured-book__actions {
        flex-direction: column;
    }
    
    .featured-book__btn {
        width: 100%;
        text-align: center;
    }
    
    .books-for-you__header,
    .books-continue-reading__header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2, 8px);
    }
}

/* ============================================
   Dark Theme Support
   ============================================ */

[data-theme="dark"] .featured-book {
    background: linear-gradient(135deg, var(--color-bg-tertiary, #334155) 0%, var(--color-bg-secondary, #1e293b) 100%);
}

[data-theme="dark"] .featured-book::before {
    background: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

[data-theme="dark"] .featured-book__btn--secondary {
    background: var(--color-bg-tertiary, #334155);
    border-color: var(--color-border, #334155);
}

[data-theme="dark"] .featured-book__btn--secondary:hover {
    background: var(--color-bg-secondary, #1e293b);
}

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

@media print {
    .books-layout .content-card:hover {
        transform: none;
        box-shadow: none;
    }
    
    .featured-book {
        break-inside: avoid;
    }
}

/* ============================================
   Accessibility
   ============================================ */

/* Focus visible for keyboard navigation */
.books-layout .content-card:focus-visible,
.featured-book__btn:focus-visible {
    outline: 2px solid var(--color-primary, #2563eb);
    outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .books-layout .content-card,
    .featured-book__btn,
    .books-continue-reading__progress-bar {
        transition: none;
    }
    
    .books-layout .content-card:hover {
        transform: none;
    }
}