/* =====================================================
   BIBLIOTECA / BOOKSTORE STYLES
   ===================================================== */

/* Featured Book Section */
.featured-book {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    background: linear-gradient(135deg, rgba(22, 33, 62, 0.8), rgba(10, 10, 20, 0.9));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    margin-bottom: 3rem;
}

.featured-book-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-cover-placeholder {
    width: 250px;
    height: 350px;
    background: linear-gradient(145deg, var(--primary), var(--secondary));
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.book-cover-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 215, 0, 0.1) 50%, transparent 70%);
}

.book-cover-placeholder.small {
    width: 150px;
    height: 210px;
}

.book-icon {
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.book-cover-placeholder.small .book-icon {
    font-size: 2.5rem;
}

.coming-soon {
    background: var(--gold);
    color: var(--bg-primary);
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.featured-book-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.book-badge {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    width: fit-content;
}

.featured-book-content h2 {
    font-size: 2rem;
    color: var(--gold);
    margin: 0;
}

.book-author {
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
}

.book-description {
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.book-details {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 1rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.detail-value {
    color: var(--text-primary);
    font-weight: 500;
}

.book-cta {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* Category Tabs */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.category-tab {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.category-tab:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.category-tab.active {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--bg-primary);
    font-weight: 600;
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.book-card {
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.book-card:hover {
    transform: translateY(-5px);
    border-color: var(--gold);
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.1);
}

.book-card-image {
    display: flex;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(22, 33, 62, 0.5), transparent);
}

.book-card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

.book-category {
    font-size: 0.7rem;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.book-card-content h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
}

.book-excerpt {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

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

.book-status {
    font-size: 0.75rem;
    color: var(--gold);
    font-style: italic;
}

.book-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-outline:hover {
    background: var(--gold);
    color: var(--bg-primary);
}

/* Reading List */
.reading-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.reading-category {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.reading-category h3 {
    color: var(--gold);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.reading-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.reading-items li {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.reading-items li:last-child {
    border-bottom: none;
}

.reading-items strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.reading-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Newsletter Card */
.newsletter-card {
    background: linear-gradient(135deg, rgba(233, 69, 96, 0.15), rgba(255, 215, 0, 0.1));
    border: 1px solid var(--accent);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
}

.newsletter-content h2 {
    color: var(--gold);
    margin-bottom: 1rem;
}

.newsletter-content p {
    color: var(--text-primary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.newsletter-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Reading Order Card */
.reading-order-card {
    background: linear-gradient(135deg, rgba(22, 33, 62, 0.8), rgba(10, 10, 20, 0.9));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.reading-order-card h2 {
    text-align: center;
    color: var(--gold);
    margin-bottom: 2rem;
}

.reading-order-levels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.level-card {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    border-left: 4px solid;
}

.level-iniciacion {
    border-left-color: #4ade80;
}

.level-intermedio {
    border-left-color: var(--gold);
}

.level-avanzado {
    border-left-color: var(--accent);
}

.level-header {
    margin-bottom: 1rem;
}

.level-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.level-iniciacion .level-badge {
    background: rgba(74, 222, 128, 0.2);
    color: #4ade80;
}

.level-intermedio .level-badge {
    background: rgba(255, 215, 0, 0.2);
    color: var(--gold);
}

.level-avanzado .level-badge {
    background: rgba(233, 69, 96, 0.2);
    color: var(--accent);
}

.level-books {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.level-book {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.book-number {
    width: 28px;
    height: 28px;
    background: var(--gold);
    color: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.level-book .book-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.level-book .book-info strong {
    color: var(--text-primary);
    font-size: 0.95rem;
}

.level-book .book-info span {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Category Headings */
.category-heading {
    color: var(--gold);
    font-size: 1.5rem;
    margin: 2rem 0 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

/* Book Cover Styles */
.book-card-image {
    position: relative;
}

.book-cover {
    width: 160px;
    height: 220px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.book-cover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 40%, rgba(255, 255, 255, 0.1) 50%, transparent 60%);
}

.book-cover-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    text-align: center;
    z-index: 1;
}

.book-cover-content.dark {
    color: white;
}

.book-symbol {
    font-size: 2.5rem;
    font-weight: 300;
    color: #333;
    font-family: 'Georgia', serif;
}

.book-symbol-phi {
    font-size: 3rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.8);
    font-family: 'Georgia', serif;
}

.book-silhouette {
    font-size: 2rem;
    opacity: 0.8;
}

.book-title-cover {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.4;
    color: #333;
}

.book-cover-content.dark .book-title-cover {
    color: rgba(255, 255, 255, 0.9);
}

.book-title-cover.small {
    font-size: 0.6rem;
}

/* Level Badges on Cards */
.book-level-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.book-level-badge.iniciacion {
    background: rgba(74, 222, 128, 0.9);
    color: #0a2a0a;
}

.book-level-badge.intermedio {
    background: rgba(255, 215, 0, 0.9);
    color: #2a2a0a;
}

.book-level-badge.avanzado {
    background: rgba(233, 69, 96, 0.9);
    color: white;
}

.book-featured-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--accent);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Book Card Enhancements */
.book-card.featured {
    border-color: var(--gold);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.15);
}

.book-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
}

.book-features {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
    font-size: 0.85rem;
}

.book-features li {
    padding: 0.3rem 0;
    color: var(--text-secondary);
    padding-left: 1rem;
    position: relative;
}

.book-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--gold);
}

.book-features li strong {
    color: var(--text-primary);
}

.book-instruction {
    background: rgba(255, 215, 0, 0.1);
    border-left: 3px solid var(--gold);
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-radius: 0 6px 6px 0;
}

.book-requirements {
    font-size: 0.8rem;
    color: var(--accent);
    padding: 0.5rem 0;
}

.book-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
}

.book-format {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.book-sku {
    font-size: 0.7rem;
    color: var(--text-muted, #666);
    font-family: monospace;
}

.book-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gold);
    margin-top: 0.25rem;
}

.btn-disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.btn-disabled:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.book-cta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.book-cta .btn {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
}

/* Contact Card */
.contact-card {
    background: linear-gradient(135deg, rgba(22, 33, 62, 0.8), rgba(10, 10, 20, 0.9));
    border: 1px solid var(--gold);
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
}

.contact-card h2 {
    color: var(--gold);
    margin-bottom: 1rem;
}

.contact-card > p {
    color: var(--text-primary);
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.contact-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.contact-option {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
}

.contact-option h4 {
    color: var(--gold);
    margin-bottom: 0.75rem;
}

.contact-option p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.zenodo-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* Responsive */
@media (max-width: 768px) {
    .featured-book {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .featured-book-content h2 {
        font-size: 1.5rem;
    }

    .book-cta {
        flex-direction: column;
    }

    .book-details {
        justify-content: center;
    }

    .books-grid {
        grid-template-columns: 1fr;
    }

    .reading-list {
        grid-template-columns: 1fr;
    }

    .newsletter-card {
        padding: 2rem 1rem;
    }

    .reading-order-card {
        padding: 1.5rem;
    }

    .reading-order-levels {
        grid-template-columns: 1fr;
    }

    .category-heading {
        font-size: 1.2rem;
    }

    .contact-card {
        padding: 1.5rem;
    }

    .contact-options {
        grid-template-columns: 1fr;
    }

    .book-cover {
        width: 140px;
        height: 190px;
    }
}