/* ==========================================================================
   Variables & Base Styles
   ========================================================================== */
/* Improved mobile-first approach with theme-compatible breakpoints */
/* Focus states and accessibility improvements included */
:root {
    /* Color Palette */
    --ab-primary: #1a4e8c;
    --ab-primary-light: #2a6cb8;
    --ab-secondary: #e65100;
    --ab-text: #333333;
    --ab-light-gray: #f5f5f5;
    --ab-border: #dddddd;
    --ab-success: #4caf50;
    --ab-white: #ffffff;
    
    /* Accessibility - Focus colors with proper contrast ratios */
    --ab-focus-color: #2563eb;
    --ab-focus-bg: rgba(37, 99, 235, 0.1);
    --ab-focus-outline: 2px solid var(--ab-focus-color);
}

/* ==========================================================================
   Accessibility & Focus States (WCAG 2.1 AA Compliant)
   ========================================================================== */
   
/* Enhanced focus states for all interactive elements */
.ab-book-item a:focus,
.ab-buy-button:focus,
.ab-filter-button:focus,
.ab-carousel-prev:focus,
.ab-carousel-next:focus,
.ab-pagination a:focus,
.ab-book-link:focus,
.ab-genre-filter:focus,
.ab-series-filter:focus {
    outline: var(--ab-focus-outline);
    outline-offset: 2px;
    background-color: var(--ab-focus-bg);
    border-radius: 4px;
    transition: outline 0.15s ease-in-out, background-color 0.15s ease-in-out;
}

/* Focus for book items with enhanced visual feedback */
.ab-book-grid .ab-book-item:focus-within {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Skip link for keyboard navigation */
.ab-skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--ab-primary);
    color: white;
    padding: 8px 12px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    font-weight: 600;
}

.ab-skip-link:focus {
    top: 6px;
}

/* ==========================================================================
   Related Content Section
   ========================================================================== */
.ab-related-content-section {
    margin: 3rem 0 2rem 0;
    padding: 2.5rem 0;
    border-top: 2px solid var(--ab-border, #e1e5e9);
    background: linear-gradient(135deg, #fafbfc 0%, #ffffff 100%);
}

.ab-related-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--ab-text, #2c3e50);
    text-align: center;
    margin: 0 0 2.5rem 0;
    position: relative;
    letter-spacing: -0.5px;
}

.ab-related-title::after {
    content: '';
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--ab-primary, #1a4e8c) 0%, var(--ab-secondary, #FF9900) 100%);
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.ab-related-grid {
    display: grid;
    gap: 2rem;
    margin: 0 auto;
    max-width: 1400px;
    padding: 0 1rem;
    align-items: stretch;
}

.ab-columns-2 {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.ab-columns-3 {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.ab-columns-4 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Related Item Styles */
.ab-related-item {
    background: var(--ab-white, #ffffff);
    border: 1px solid var(--ab-border, #e1e5e9);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    height: 100%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.ab-related-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    border-color: var(--ab-primary, #1a4e8c);
}

.ab-related-item-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Related Book Specific Styles */
.ab-related-book .ab-related-item-image {
    position: relative;
    padding-bottom: 140%; /* Book aspect ratio */
    background: #f8f9fa;
    overflow: hidden;
}

.ab-related-book .ab-related-item-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.ab-related-book:hover .ab-related-item-image img {
    transform: scale(1.05);
}

.ab-related-item-details {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ab-related-item-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ab-text);
    margin: 0 0 0.75rem 0;
    line-height: 1.4;
}

.ab-related-item-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.ab-related-item-title a:hover {
    color: var(--ab-primary);
}

.ab-related-item-series {
    font-size: 0.875rem;
    color: var(--ab-primary);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.ab-related-item-excerpt {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
    margin-bottom: 1rem;
    flex: 1;
}

.ab-related-item-price {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ab-secondary);
    margin-top: auto;
}

.ab-related-item-count {
    font-size: 0.875rem;
    color: #666;
    margin-bottom: 0.75rem;
}

/* Series and Genre Specific Styles */
.ab-related-series,
.ab-related-genre {
    background: linear-gradient(135deg, var(--ab-light-gray) 0%, #fff 100%);
}

.ab-related-series .ab-related-item-title::before {
    content: '📚';
    margin-right: 0.5rem;
}

.ab-related-genre .ab-related-item-title::before {
    content: '🏷️';
    margin-right: 0.5rem;
}

/* Enhanced Responsive Design */
@media screen and (max-width: 992px) {
    .ab-columns-3,
    .ab-columns-4 {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media screen and (max-width: 768px) {
    .ab-related-content-section {
        margin: 2rem 0;
        padding: 2rem 0;
    }
    
    .ab-related-title {
        font-size: 1.625rem;
        margin-bottom: 2rem;
    }
    
    .ab-related-grid {
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .ab-columns-2 {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .ab-columns-3,
    .ab-columns-4 {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    }
    
    .ab-related-item-details {
        padding: 1.5rem;
    }
}

@media screen and (max-width: 600px) {
    .ab-columns-2,
    .ab-columns-3,
    .ab-columns-4 {
        grid-template-columns: 1fr;
    }
    
    .ab-related-grid {
        padding: 0 0.75rem;
    }
}

@media screen and (max-width: 480px) {
    .ab-related-content-section {
        margin: 1.5rem 0;
        padding: 1.5rem 0;
    }
    
    .ab-related-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .ab-related-grid {
        gap: 1rem;
        padding: 0 0.5rem;
    }
    
    .ab-related-item-details {
        padding: 1.25rem;
    }
    
    .ab-related-item-meta {
        gap: 0.5rem;
    }
    
    .ab-view-series-button,
    .ab-view-genre-button {
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
    }
}

/* Enhanced Related Content Styles */
.ab-related-item-details {
    padding: 1.75rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ab-related-item-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ab-text, #2c3e50);
    margin: 0 0 1rem 0;
    line-height: 1.3;
    letter-spacing: -0.3px;
}

.ab-related-item-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.ab-related-item-title a:hover {
    color: var(--ab-primary, #1a4e8c);
}

.ab-related-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: center;
}

.ab-related-item-series {
    font-size: 0.875rem;
    color: var(--ab-primary, #1a4e8c);
    font-weight: 600;
    background: var(--ab-light-gray, #f8f9fa);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid var(--ab-border, #e1e5e9);
}

.ab-related-item-type {
    font-size: 0.75rem;
    color: var(--ab-text-light, #6c757d);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ab-related-item-count {
    font-size: 0.875rem;
    color: var(--ab-text-light, #6c757d);
    font-weight: 500;
}

.ab-related-item-excerpt {
    font-size: 0.9rem;
    color: var(--ab-text-light, #6c757d);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex: 1;
}

.ab-related-item-price {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--ab-secondary, #FF9900);
    background: #fff5e6;
    padding: 0.375rem 0.75rem;
    border-radius: 8px;
    display: inline-block;
}

.ab-related-item-price::before {
    content: '$';
    font-size: 0.9em;
    opacity: 0.8;
}

.ab-related-item-actions {
    margin-top: auto;
    padding-top: 1rem;
}

.ab-view-series-button,
.ab-view-genre-button {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: 2px solid var(--ab-primary, #1a4e8c);
    color: var(--ab-primary, #1a4e8c);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    width: 100%;
    justify-content: center;
}

.ab-view-series-button:hover,
.ab-view-genre-button:hover {
    background: var(--ab-primary, #1a4e8c);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 78, 140, 0.3);
}

/* Placeholder Images for Series and Genres */
.ab-series-placeholder,
.ab-genre-placeholder {
    position: relative;
    padding-bottom: 140%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.ab-series-icon,
.ab-genre-icon {
    color: white;
    opacity: 0.9;
    transition: transform 0.3s ease, opacity 0.3s ease;
    position: absolute;
}

.ab-related-series:hover .ab-series-icon,
.ab-related-genre:hover .ab-genre-icon {
    transform: scale(1.1);
    opacity: 1;
}

.ab-series-placeholder {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

.ab-genre-placeholder {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

/* Series and Genre Specific Styles */
.ab-related-series,
.ab-related-genre {
    background: var(--ab-white, #ffffff);
    position: relative;
    overflow: hidden;
}

.ab-related-series::before,
.ab-related-genre::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    z-index: 1;
}

.ab-related-series::before {
    background: linear-gradient(90deg, #6366f1 0%, #8b5cf6 100%);
}

.ab-related-genre::before {
    background: linear-gradient(90deg, #f59e0b 0%, #ef4444 100%);
}

/* Animation States */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ab-related-item {
    animation: fadeInUp 0.6s ease-out forwards;
}

.ab-related-item:nth-child(1) { animation-delay: 0.1s; }
.ab-related-item:nth-child(2) { animation-delay: 0.2s; }
.ab-related-item:nth-child(3) { animation-delay: 0.3s; }
.ab-related-item:nth-child(4) { animation-delay: 0.4s; }
.ab-related-item:nth-child(5) { animation-delay: 0.5s; }
.ab-related-item:nth-child(6) { animation-delay: 0.6s; }

/* ==========================================================================
   Taxonomy Archive Styles
   ========================================================================== */
.ab-taxonomy-archive {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

.ab-archive-header {
    text-align: center;
    margin: 2rem 0 3rem 0;
    padding: 2rem 0;
    border-bottom: 2px solid var(--ab-light-gray);
}

.ab-archive-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--ab-text);
    margin: 0 0 1rem 0;
    line-height: 1.2;
}

.ab-archive-description {
    font-size: 1.125rem;
    color: #666;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto 1.5rem auto;
}

.ab-series-stats,
.ab-genre-stats {
    font-size: 1rem;
    color: var(--ab-primary);
    font-weight: 500;
}

.ab-book-count {
    padding: 0.5rem 1rem;
    background: var(--ab-light-gray);
    border-radius: 20px;
    display: inline-block;
}

/* Series specific styles */
.ab-series-order-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--ab-dynamic-book-number, var(--ab-dynamic-meta, var(--ab-primary)));
    border: 1px solid currentColor;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    z-index: 2;
}

.ab-book-series-info {
    margin-bottom: 0.75rem;
}

.ab-series-link {
    color: var(--ab-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.ab-series-link:hover {
    text-decoration: underline;
}

/* No books found message */
.ab-no-books {
    text-align: center;
    padding: 3rem 0;
    color: #666;
    font-size: 1.125rem;
}

/* Responsive design for archives */
@media screen and (max-width: 768px) {
    .ab-archive-title {
        font-size: 2rem;
    }
    
    .ab-archive-description {
        font-size: 1rem;
    }
    
    .ab-archive-header {
        margin: 1.5rem 0 2rem 0;
        padding: 1.5rem 0;
    }
}

@media screen and (max-width: 480px) {
    .ab-archive-title {
        font-size: 1.75rem;
    }
    
    .ab-archive-header {
        margin: 1rem 0 1.5rem 0;
        padding: 1rem 0;
    }
}

/* ==========================================================================
   Book Grid Layout
   ========================================================================== */
/* CSS Grid with Masonry support for modern browsers */
.ab-book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin: 2rem auto;
    padding: 1rem;
    max-width: 1400px;
}

/* Modern CSS Masonry for supported browsers */
@supports (grid-template-rows: masonry) {
    .ab-book-grid {
        grid-template-rows: masonry;
        align-items: start;
    }
}

/* Fallback for browsers without CSS masonry - equal height items */
.ab-book-grid .ab-book-item {
    align-self: start;
}

/* Loading states for progressive enhancement */
.ab-book-grid.ab-masonry-loading {
    opacity: 0.7;
}

.ab-book-grid.ab-masonry-loading .ab-book-item {
    visibility: hidden;
}

/* Enhanced styles for CSS masonry */
.ab-book-grid.ab-css-masonry .ab-book-item {
    break-inside: avoid;
    page-break-inside: avoid;
}

/* Gallery variant for shortcode grid output */
.ab-book-grid.ab-book-gallery {
    gap: 1rem;
}

.ab-book-grid.ab-book-gallery .ab-book-item {
    border-radius: 10px;
    overflow: hidden;
}

.ab-book-grid.ab-book-gallery .ab-book-cover {
    margin-bottom: 0;
}

.ab-book-grid.ab-book-gallery .ab-book-details {
    padding: 0.85rem;
}

.ab-book-grid .ab-book-details {
    align-items: center;
    text-align: center;
}

.ab-book-grid .ab-book-title,
.ab-book-grid .ab-book-title a,
.ab-book-grid .ab-book-meta,
.ab-book-grid .ab-book-series,
.ab-book-grid .ab-book-series-number {
    text-align: center;
}

.ab-book-grid .ab-book-meta,
.ab-book-grid .ab-book-series {
    justify-content: center;
}

/* Carousel shortcode layout */
.ab-book-carousel {
    margin: 2rem 0;
}

.ab-book-carousel .ab-carousel-item {
    padding: 0 0.75rem;
    box-sizing: border-box;
}

.ab-book-carousel .ab-book-cover {
    margin-bottom: 0.75rem;
}

.ab-book-carousel .ab-book-title {
    margin: 0 0 0.5rem;
    font-size: 1rem;
    line-height: 1.35;
}

.ab-book-carousel .ab-book-details {
    padding: 0.25rem 0;
    text-align: center;
    align-items: center;
}

.ab-book-carousel .ab-carousel-details {
    font-size: 0.95rem;
    text-align: center;
}

.ab-book-carousel .ab-book-title,
.ab-book-carousel .ab-book-title a {
    text-align: center;
    color: #fff;
}

.ab-book-carousel .ab-book-series,
.ab-book-carousel .ab-book-meta {
    justify-content: center;
    text-align: center;
    color: #fff;
}

.ab-book-carousel .slick-track {
    display: flex;
}

.ab-book-carousel .slick-slide {
    height: inherit;
}

.ab-book-carousel .slick-slide > div {
    height: 100%;
}

.ab-book-carousel .ab-carousel-item {
    height: 100%;
}

/* Aspect ratio containers to prevent reflow — defined once on .ab-book-cover below */

/* Book Item Card */
.ab-book-item {
    background: var(--ab-dynamic-book-background, var(--ab-white));
    border: 1px solid var(--ab-border);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.ab-book-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

/* Book Cover Container */
.ab-book-cover {
    position: relative;
    width: min(100%, var(--ab-cover-max-width, 100%));
    aspect-ratio: var(--ab-cover-aspect, 2 / 3);
    margin: 0 auto;
    background: transparent;
    overflow: hidden;
}

.ab-book-badges {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 3;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    pointer-events: none;
}

.ab-book-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #fff;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}

.ab-book-badge-new {
    background: linear-gradient(135deg, #169b62 0%, #27c27b 100%);
}

.ab-book-badge-coming-soon {
    background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
}

.ab-book-badge-free {
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
}

.ab-book-badge-promotion {
    background: linear-gradient(135deg, #b91c1c 0%, #ef4444 100%);
}

.ab-book-cover img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.ab-book-item:hover .ab-book-cover img {
    transform: scale(1.08);
}

/* Book Details Section */
.ab-book-details {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex-grow: 1;
}

.ab-book-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
	color: var(--ab-dynamic-title, var(--ab-secondary));
}

.ab-book-title a {
    color: var(--ab-dynamic-title, var(--ab-text));
    text-decoration: none;
    transition: color 0.2s ease;
}

.ab-book-title a:hover {
    color: var(--ab-primary);
}

.ab-book-excerpt {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--ab-dynamic-text, #666);
    margin: 0;
    flex-grow: 1;
}

/* ==========================================================================
   Series & Genre Display
   ========================================================================== */
/* Series Information */
.ab-book-series {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.ab-series-name {
    font-size: 0.9rem;
    color: var(--ab-dynamic-series, var(--ab-primary));
    background: var(--ab-light-gray);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    display: inline-block;
}

.ab-series-order {
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.92);
    color: var(--ab-dynamic-book-number, var(--ab-dynamic-meta, var(--ab-primary)));
    border: 1px solid currentColor;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Series Order Badge */
.ab-series-order-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.92);
    color: var(--ab-dynamic-book-number, var(--ab-dynamic-meta, var(--ab-primary)));
    border: 1px solid currentColor;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    z-index: 2;
}

/* Genre Tags */
.ab-book-genres {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.ab-genre-tag {
    background: var(--ab-light-gray);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--ab-primary);
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.ab-genre-tag:hover {
    background: #e8e8e8;
}

/* Book Metadata */
.ab-book-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--ab-border);
}

.ab-meta-item {
    display: flex;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.ab-meta-label {
    color: var(--ab-dynamic-meta, #666);
}

.ab-meta-value {
    color: var(--ab-dynamic-meta, var(--ab-text));
    font-weight: 500;
}

/* ==========================================================================
   Archive Page Styles
   ========================================================================== */
.ab-archive-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Archive Header */
.ab-archive-header {
    text-align: center;
    margin-bottom: 3rem;
    background: var(--ab-primary);
    padding: 3rem 1rem;
    border-radius: 12px;
}

.ab-archive-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.ab-archive-description {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* Archive Filters */
.ab-archive-filters {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--ab-light-gray);
    border-radius: 12px;
}

.ab-filter-section {
    margin-bottom: 1.5rem;
}

.ab-filter-section:last-child {
    margin-bottom: 0;
}

.ab-filter-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: var(--ab-text);
}

.ab-filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.ab-filter-option {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--ab-white);
    border: 1px solid var(--ab-border);
    border-radius: 20px;
    text-decoration: none;
    color: var(--ab-text);
    transition: all 0.2s ease;
}

.ab-filter-option:hover,
.ab-filter-option.active {
    background: var(--ab-secondary);
    border-color: var(--ab-secondary);
    color: var(--ab-white);
}

/* No Books Message */
.ab-no-books {
    background: var(--ab-light-gray);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    max-width: 600px;
    margin: 2rem auto;
}

/* ==========================================================================
   Buttons & Actions
   ========================================================================== */
.ab-book-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.ab-buy-button,
.ab-details-button,
.ab-view-all-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1rem;
    border-radius: 999px;
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    transition: all 0.2s ease;
    color: var(--ab-white);
}

.ab-buy-button {
    background: var(--ab-secondary);
    color: var(--ab-white);
    flex: 1 1 auto;
}

.ab-details-button {
    background: var(--ab-light-gray);
    color: var(--ab-text);
    flex: 0 1 auto;
}

.ab-view-all-button {
    background: var(--ab-primary);
    color: var(--ab-white);
}

.ab-buy-button:hover,
.ab-view-all-button:hover {
    background: #E68A00;
    transform: translateY(-1px);
}

.ab-details-button:hover {
    background: #e8e8e8;
    transform: translateY(-1px);
}

/* ==========================================================================
   Single Book Page Styles
   ========================================================================== */
.ab-single-book-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 2.5rem 1rem 3rem;
    position: relative;
}

.ab-single-book-container::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 26rem;
    background:
        radial-gradient(circle at top left, rgba(26, 78, 140, 0.14), transparent 40%),
        radial-gradient(circle at top right, rgba(230, 138, 0, 0.12), transparent 38%),
        linear-gradient(180deg, rgba(248, 250, 252, 0.96) 0%, rgba(248, 250, 252, 0) 100%);
    pointer-events: none;
    z-index: 0;
}

.ab-single-book {
    display: grid;
    gap: 2.25rem;
    position: relative;
    z-index: 1;
}

.ab-book-header {
    display: grid;
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
    gap: 2.25rem;
    align-items: start;
}

.ab-single-book-cover {
    position: sticky;
    top: 2rem;
    margin: 0;
}

.ab-single-book-cover img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
    box-shadow: 0 24px 50px rgba(17, 24, 39, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.85);
}

.ab-book-header-details {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.95fr);
    gap: 1.5rem;
    align-items: start;
}

.ab-book-hero-copy,
.ab-single-book-sidebar {
    display: grid;
    gap: 1.25rem;
}

.ab-book-title-block,
.ab-book-meta-card,
.ab-book-purchase-panel,
.ab-book-content-card,
.ab-book-share-panel {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, #f8fafc 100%);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.06);
}

.ab-book-title-block .ab-book-title {
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.05;
    margin-bottom: 0.35rem;
    letter-spacing: -0.03em;
}

.ab-book-subtitle {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--ab-dynamic-series, var(--ab-primary));
}

.ab-book-hook {
    margin: 0.85rem 0 0;
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--ab-dynamic-text, var(--ab-text));
    max-width: 42rem;
}

.ab-book-series {
    margin-top: 0;
}

.ab-book-lead {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--ab-dynamic-text, var(--ab-text));
}

.ab-book-lead p:last-child {
    margin-bottom: 0;
}

.ab-book-review-quote {
    margin: 0;
    padding: 1.4rem 1.5rem 1.3rem 1.9rem;
    border-left: 4px solid var(--ab-dynamic-primary, var(--ab-primary));
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(246, 248, 250, 0.92) 100%);
    border-radius: 18px;
    font-size: 1.05rem;
    line-height: 1.7;
    position: relative;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.ab-book-review-quote::before {
    content: '"';
    position: absolute;
    top: -0.35rem;
    left: 1rem;
    font-size: 3rem;
    line-height: 1;
    color: rgba(26, 78, 140, 0.18);
    font-family: Georgia, "Times New Roman", serif;
}

.ab-book-review-quote p {
    margin: 0;
}

.ab-section-eyebrow {
    margin: 0 0 1rem;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ab-dynamic-series, var(--ab-primary));
}

.ab-book-meta-card-grid {
    display: grid;
    gap: 0.85rem;
}

.ab-book-meta-card-grid .ab-meta-item {
    display: grid;
    gap: 0.2rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.ab-book-meta-card-grid .ab-meta-item:last-child {
    padding-bottom: 0;
    border-bottom: none;
}

.ab-book-meta-card-grid .ab-meta-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.ab-book-meta-card-grid .ab-meta-value {
    font-size: 1rem;
}

.ab-book-purchase-panel .ab-book-actions {
    margin-top: 0;
}

.ab-purchase-status {
    margin: -0.15rem 0 1rem;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--ab-dynamic-meta, #666);
}

.ab-sample-button {
    background: transparent;
    border: 1px solid rgba(15, 23, 42, 0.14);
}

.ab-primary-purchase-button {
    min-width: 180px;
    box-shadow: 0 12px 24px rgba(230, 138, 0, 0.18);
}

.ab-retailer-links {
    margin-top: 1rem;
    display: grid;
    gap: 0.6rem;
}

.ab-retailer-links-label {
    margin: 0;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ab-dynamic-meta, #666);
}

.ab-retailer-link-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.ab-retailer-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(15, 23, 42, 0.12);
    color: var(--ab-dynamic-text, var(--ab-text));
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    transition: border-color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.ab-retailer-link.ab-buy-bn {
    border-color: rgba(58, 42, 18, 0.14);
}

.ab-retailer-link.ab-buy-kobo {
    border-color: rgba(0, 104, 85, 0.18);
}

.ab-retailer-link.ab-buy-apple {
    border-color: rgba(35, 35, 35, 0.14);
}

.ab-retailer-link:hover {
    border-color: var(--ab-dynamic-primary, var(--ab-primary));
    background: rgba(255, 255, 255, 1);
    transform: translateY(-1px);
}

.ab-book-share-panel {
    padding-top: 1.2rem;
}

.ab-share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    align-items: center;
}

.ab-share-label {
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ab-dynamic-meta, #666);
    font-weight: 700;
}

.ab-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
    text-decoration: none;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: rgba(255, 255, 255, 0.92);
    color: var(--ab-dynamic-text, var(--ab-text));
    font-size: 0.88rem;
    font-weight: 600;
    transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.ab-share-btn:hover {
    transform: translateY(-1px);
    border-color: var(--ab-dynamic-primary, var(--ab-primary));
    background: rgba(255, 255, 255, 1);
}

.ab-book-content-sections {
    display: grid;
    gap: 2rem;
}

.ab-book-blurb {
    line-height: 1.8;
}

.ab-book-blurb img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.ab-book-blurb p:last-child {
    margin-bottom: 0;
}


/* Series Navigation */
.ab-series-navigation {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--ab-light-gray);
    border-radius: 12px;
}

.ab-series-nav-links {
    display: flex;
    justify-content: space-between;
    margin: 1.5rem 0;
}

.ab-nav-previous,
.ab-nav-next {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--ab-text);
    max-width: 45%;
}

.nav-subtitle {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.nav-title {
    font-weight: 500;
}

/* Series Books Grid */
.ab-series-books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.ab-series-book-item {
    position: relative;
}

.ab-series-book-item.current-book {
    opacity: 0.7;
}

.ab-series-book-number {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Related Books */
.ab-related-books {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--ab-border);
}

.ab-related-books h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.ab-related-books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}




/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1200px) {
    .ab-book-grid:not([class*="ab-columns-"]) {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
    }

    .ab-book-header {
        grid-template-columns: minmax(200px, 260px) minmax(0, 1fr);
    }

    .ab-book-header-details {
        grid-template-columns: 1fr;
    }

    .ab-single-book-cover {
        position: static;
    }
}

@media (max-width: 768px) {
    .ab-book-grid:not([class*="ab-columns-"]) {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 1.5rem;
        padding: 0.75rem;
    }
    
    .ab-book-header {
        grid-template-columns: 1fr;
    }
    
    .ab-book-header .ab-book-cover {
        max-width: 280px;
        margin: 0 auto;
    }

    .ab-book-title-block,
    .ab-book-meta-card,
    .ab-book-purchase-panel,
    .ab-book-content-card,
    .ab-book-share-panel {
        padding: 1.2rem;
        border-radius: 16px;
    }
    
    .ab-archive-title {
        font-size: 2rem;
    }
    
    .ab-series-nav-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .ab-nav-previous,
    .ab-nav-next {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .ab-book-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 1rem auto;
    }
    
    .ab-book-item:hover {
        transform: translateY(-4px);
    }
    
    .ab-archive-header {
        padding: 2rem 1rem;
    }
    
    .ab-archive-title {
        font-size: 1.75rem;
    }
    
    .ab-filter-options {
        flex-direction: column;
    }
    
    .ab-filter-option {
        width: 100%;
        text-align: center;
    }
    
    .ab-book-actions {
        flex-direction: column;
    }
    
    .ab-related-books-grid {
        grid-template-columns: 1fr;
    }
}

/* Override theme container width constraints */
.ab-related-books-grid,
/* Book grid and archive container base styles */
.ab-book-grid,
.ab-archive-container {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    box-sizing: border-box;
}

/* Responsive padding for grid containers */
.ab-book-grid-wrapper .ab-book-grid {
    padding-left: 1rem;
    padding-right: 1rem;
}

/* Ensure grid items have proper width */
.ab-book-item {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

/* Container query for responsive grid */
@container (min-width: 600px) {
    .ab-book-grid:not([class*="ab-columns-"]) {
        grid-template-columns: repeat(2, 1fr);
    }
}

@container (min-width: 900px) {
    .ab-book-grid:not([class*="ab-columns-"]) {
        grid-template-columns: repeat(3, 1fr);
    }
}

@container (min-width: 1200px) {
    .ab-book-grid:not([class*="ab-columns-"]) {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Explicit column counts (honor user settings) */
.ab-book-grid.ab-columns-1 { grid-template-columns: repeat(1, 1fr); }
.ab-book-grid.ab-columns-2 { grid-template-columns: repeat(2, 1fr); }
.ab-book-grid.ab-columns-3 { grid-template-columns: repeat(3, 1fr); }
.ab-book-grid.ab-columns-4 { grid-template-columns: repeat(4, 1fr); }
.ab-book-grid.ab-columns-5 { grid-template-columns: repeat(5, 1fr); }
.ab-book-grid.ab-columns-6 { grid-template-columns: repeat(6, 1fr); }

/* Small screens: collapse multi-column grids for readability */
@media (max-width: 480px) {
    .ab-book-grid.ab-columns-2,
    .ab-book-grid.ab-columns-3,
    .ab-book-grid.ab-columns-4,
    .ab-book-grid.ab-columns-5,
    .ab-book-grid.ab-columns-6 { grid-template-columns: 1fr; }
}

/* Plugin-specific content area overrides - more specific selectors to avoid theme conflicts */
.site-content .ab-book-grid-wrapper,
.site-main .ab-book-grid-wrapper,
.entry-content .ab-book-grid-wrapper,
.site-content .ab-single-book-container,
.site-main .ab-single-book-container,
.entry-content .ab-single-book-container {
    max-width: none;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

/* Container spacing for book layouts */
.ab-book-grid-wrapper {
    padding: 2rem 1rem;
    box-sizing: border-box;
}

.ab-book-grid-wrapper.ab-align-center .ab-book-grid {
    display: inline-grid !important;
    width: auto !important;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    justify-content: center;
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 260px)) !important;
}

.ab-book-grid-wrapper.ab-align-center .ab-book-grid.ab-columns-1 { grid-template-columns: minmax(min(220px, 100%), 260px) !important; }
.ab-book-grid-wrapper.ab-align-center .ab-book-grid.ab-columns-2 { grid-template-columns: repeat(2, minmax(min(220px, 100%), 260px)) !important; }
.ab-book-grid-wrapper.ab-align-center .ab-book-grid.ab-columns-3 { grid-template-columns: repeat(3, minmax(min(220px, 100%), 260px)) !important; }
.ab-book-grid-wrapper.ab-align-center .ab-book-grid.ab-columns-4 { grid-template-columns: repeat(4, minmax(min(220px, 100%), 260px)) !important; }
.ab-book-grid-wrapper.ab-align-center .ab-book-grid.ab-columns-5 { grid-template-columns: repeat(5, minmax(min(220px, 100%), 260px)) !important; }
.ab-book-grid-wrapper.ab-align-center .ab-book-grid.ab-columns-6 { grid-template-columns: repeat(6, minmax(min(220px, 100%), 260px)) !important; }

@media (max-width: 900px) {
    .ab-book-grid-wrapper.ab-align-center .ab-book-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 240px)) !important;
    }
}

@media (max-width: 600px) {
    .ab-book-grid-wrapper.ab-align-center .ab-book-grid {
        display: grid !important;
        width: 100% !important;
        grid-template-columns: 1fr !important;
    }
}

/* ==========================================================================
   Featured Book Shortcode
   ========================================================================== */
.ab-featured-book {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 1.5rem;
    align-items: start;
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--ab-dynamic-book-background, var(--ab-white, #fff));
    border: 1px solid var(--ab-border, #e1e5e9);
    border-radius: 12px;
}

.ab-featured-book.layout-right {
    grid-template-columns: 1fr 320px;
}

.ab-featured-cover {
    width: 100%;
    max-width: var(--ab-featured-cover-max-width, 320px);
    aspect-ratio: var(--ab-featured-cover-aspect, 2 / 3);
    overflow: hidden;
}

.layout-right .ab-featured-cover {
    order: 2;
    justify-self: end;
}

.ab-featured-cover img.ab-featured-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 8px;
}

.ab-featured-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ab-featured-title {
    margin: 0;
    font-size: 1.75rem;
    color: var(--ab-text, #333);
}

.ab-featured-title a {
    color: inherit;
    text-decoration: none;
}

.ab-featured-title a:hover,
.ab-featured-title a:focus {
    text-decoration: underline;
}

.ab-featured-actions {
    margin-top: 0.5rem;
}

@media (max-width: 768px) {
    .ab-featured-book,
    .ab-featured-book.layout-right {
        grid-template-columns: 1fr;
    }
    .layout-right .ab-featured-cover { order: initial; justify-self: start; }
    .ab-featured-cover { max-width: 420px; }
}

/* ==========================================================================
   Book List Shortcode
   ========================================================================== */
.ab-book-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    width: 100%;
    max-width: 100%;
    clear: both;
}

.ab-book-list.ab-align-center {
    align-items: center;
}

.ab-book-list.ab-align-center .ab-book-list-item {
    width: min(100%, 960px);
}

.ab-book-list-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    border-bottom: 1px solid var(--ab-border, #e0e0e0);
    padding-bottom: 2rem;
    width: 100%;
    box-sizing: border-box;
}

.ab-book-list-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

/* Pin cover to fixed width in list view — flex-basis overrides the CSS-variable-driven width */
.ab-book-list-item .ab-book-cover {
    flex: 0 0 130px;
}

.ab-book-content {
    flex: 1;
    min-width: 0;
    background: transparent;
    margin: 0;
    padding: 0;
    border-radius: 0;
    align-items: stretch;
    justify-content: flex-start;
}

.ab-book-content .ab-book-title {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    line-height: 1.35;
}

@media (max-width: 480px) {
    .ab-book-list-item {
        flex-direction: column;
    }
    .ab-book-list-item .ab-book-cover {
        flex: 0 0 auto;
        width: 100%;
        max-width: 200px;
    }
}

/* ==========================================================================
   Series Shortcode
   ========================================================================== */
.ab-series-showcase {
    margin-bottom: 2rem;
    width: 100%;
    max-width: 100%;
    clear: both;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.ab-series-showcase.ab-align-center .ab-series-books {
    display: inline-grid;
    width: auto;
    max-width: 100%;
    grid-template-columns: repeat(auto-fit, minmax(min(160px, 100%), 220px));
    margin-left: auto;
    margin-right: auto;
}

.ab-series-showcase.ab-align-center .ab-series-books.ab-series-books-gallery {
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 260px));
}

@media (max-width: 600px) {
    .ab-series-showcase.ab-align-center .ab-series-books,
    .ab-series-showcase.ab-align-center .ab-series-books.ab-series-books-gallery {
        display: grid;
        width: 100%;
        grid-template-columns: 1fr;
    }
}

.ab-series-showcase > .ab-series-title {
    margin-bottom: 0.75rem;
    font-size: 1.5rem;
}

.ab-series-description {
    margin-bottom: 1.5rem;
    color: #555;
}

.ab-series-books {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
    width: fit-content;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.ab-series-books.ab-series-books-gallery {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.ab-series-books.ab-series-books-gallery .ab-series-book-item {
    border: 1px solid var(--ab-border, #e1e5e9);
    border-radius: 12px;
    overflow: hidden;
    background: var(--ab-dynamic-book-background, var(--ab-white, #fff));
}

.ab-series-books.ab-series-books-gallery .ab-book-cover {
    margin-bottom: 0;
}

.ab-series-books.ab-series-books-gallery .ab-book-details {
    padding: 0.85rem;
    margin-top: 0;
}

.ab-series-books .ab-book-details {
    margin-top: 0.5rem;
    text-align: center;
}

.ab-series-books .ab-book-series-number {
    font-size: 0.8rem;
    color: var(--ab-dynamic-book-number, var(--ab-dynamic-meta, #666));
    margin-bottom: 0.25rem;
}

.ab-series-books .ab-book-title {
    font-size: 0.9rem;
    margin: 0 0 0.5rem;
    line-height: 1.3;
}

/* ==========================================================================
   Theme / Divi Compatibility Layer
   These rules use the .ab-book-grid-wrapper parent for higher specificity
   so they win over generic theme resets (e.g. Divi's .et_pb_module rules)
   without polluting global selector scope.
   ========================================================================== */

/* Give the wrapper a container context so our @container queries work
   correctly regardless of what Divi or other themes set on ancestor elements. */
.ab-book-grid-wrapper {
    container-type: inline-size;
    container-name: ab-grid;
    width: 100%;
    box-sizing: border-box;
    clear: both;
}

/* Force grid display — theme resets sometimes change this to block */
.ab-book-grid-wrapper .ab-book-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 2rem;
    align-items: stretch;
}

/* Explicit column counts — highest-specificity version.
   These are intentionally NOT collapsed on mobile so the author's explicit
   column choice is honoured; only auto-fit grids shrink at narrow widths. */
.ab-book-grid-wrapper .ab-book-grid.ab-columns-1 { grid-template-columns: repeat(1, 1fr) !important; }
.ab-book-grid-wrapper .ab-book-grid.ab-columns-2 { grid-template-columns: repeat(2, 1fr) !important; }
.ab-book-grid-wrapper .ab-book-grid.ab-columns-3 { grid-template-columns: repeat(3, 1fr) !important; }
.ab-book-grid-wrapper .ab-book-grid.ab-columns-4 { grid-template-columns: repeat(4, 1fr) !important; }
.ab-book-grid-wrapper .ab-book-grid.ab-columns-5 { grid-template-columns: repeat(5, 1fr) !important; }
.ab-book-grid-wrapper .ab-book-grid.ab-columns-6 { grid-template-columns: repeat(6, 1fr) !important; }

/* Collapse only auto-fill grids (no explicit ab-columns-* class) on small screens */
@media (max-width: 600px) {
    .ab-book-grid-wrapper .ab-book-grid:not([class*="ab-columns-"]) {
        grid-template-columns: 1fr !important;
    }
}

/* Collapse all grids (including explicit ones) on very small phones */
@media (max-width: 400px) {
    .ab-book-grid-wrapper .ab-book-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Protect cover shape — prevent themes from collapsing aspect-ratio */
.ab-book-grid-wrapper .ab-book-cover,
.ab-book-list-item .ab-book-cover {
    aspect-ratio: var(--ab-cover-aspect, 2 / 3) !important;
    overflow: hidden !important;
    flex-shrink: 0;
}

/* Protect image fill */
.ab-book-grid-wrapper .ab-book-cover img,
.ab-book-list-item .ab-book-cover img,
.ab-series-book-item .ab-book-cover img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    display: block;
}

/* ==========================================================================
   Divi 5 / ET Builder specific overrides
   Divi wraps Code module output in .et_pb_code; some Divi resets target
   .et_pb_module img and set max-width which breaks our cover images.
   ========================================================================== */

/* Ensure the grid wrapper gets full width inside any Divi column */
.et_pb_column .ab-book-grid-wrapper,
.et_pb_code .ab-book-grid-wrapper,
.et_pb_section .ab-book-grid-wrapper {
    max-width: 100% !important;
}

/* Divi resets img max-width — restore it for our covers */
.et_pb_module .ab-book-cover img,
.et_pb_code .ab-book-cover img {
    max-width: 100% !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
}

/* Prevent Divi from turning our grid items into inline blocks */
.et_pb_module .ab-book-item,
.et_pb_code .ab-book-item {
    display: flex !important;
    flex-direction: column;
}

/* Non-grid shortcodes need the same protection from theme float/layout resets. */
.ab-book-carousel,
.ab-featured-book,
.ab-book-list,
.ab-series-showcase {
    width: 100%;
    max-width: 100%;
    clear: both;
    box-sizing: border-box;
}

.ab-book-carousel.ab-align-center,
.ab-featured-book.ab-align-center {
    width: min(100%, 1100px);
    margin-left: auto;
    margin-right: auto;
}

.ab-book-carousel .ab-carousel-item,
.ab-book-list-item,
.ab-featured-book,
.ab-series-book-item {
    position: relative;
}