/* ========== Publication: Journals & Books Page - Books Section Styles ========== */

.book-list-page {
    /* Page scope */
}

/* ===== Book List Section ===== */
.book-list-page .book-list-section {
    padding: var(--spacing-xxl) 0;
    background: var(--light-bg);
}

.book-list-page .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xxl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.book-list-page .section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.book-list-page .results-info {
    font-size: 1rem;
    color: var(--text-secondary);
}

.book-list-page .results-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===== Book Grid（与期刊列表项一致） ===== */
.book-list-page .book-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}

.book-list-page .book-card {
    background: var(--light-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    display: flex;
    gap: var(--spacing-lg);
    min-height: 280px;
    position: relative;
}

.book-list-page .book-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.book-list-page .book-cover-wrapper {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.book-list-page .book-cover-link {
    display: block;
    transition: var(--transition);
}

.book-list-page .book-cover {
    width: 150px;
    height: 200px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--light-secondary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.book-list-page .book-card:hover .book-cover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.book-list-page .book-cover .cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.book-list-page .book-card:hover .book-cover .cover-image {
    transform: scale(1.05);
}

/* 封面占位符：与期刊同风格，颜色稍作区分 */
.book-list-page .book-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, #e5d9e8 0%, #5a9fd4 100%);
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.6875rem;
}

.book-list-page .book-cover-placeholder i {
    font-size: 2rem;
    opacity: 0.9;
}

.book-list-page .book-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.book-list-page .book-info-top {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.book-list-page .book-title {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.book-list-page .book-title-link {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.book-list-page .book-title-link:hover {
    color: var(--primary-color);
}

.book-list-page .book-author-names {
    margin: 0 0 var(--spacing-sm);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.book-list-page .book-author-names .author-label {
    font-weight: 500;
    margin-right: var(--spacing-xs);
}

.book-list-page .book-summary-wrapper,
.book-list-page .book-introduction-wrapper {
    position: relative;
    margin-bottom: var(--spacing-md);
    flex: 1;
    min-height: 0;
}

.book-list-page .book-summary,
.book-list-page .book-introduction {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin: 0;
}

.book-list-page .book-info-bottom {
    margin-top: auto;
    padding-top: var(--spacing-md);
}

.book-list-page .book-meta-line {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-muted);
}

.book-list-page .book-meta-line .meta-sep {
    margin: 0 var(--spacing-xs);
    color: var(--text-muted);
    user-select: none;
}

.book-list-page .book-meta-line .meta-publisher {
    color: var(--text-secondary);
}

.book-list-page .book-meta-line .meta-year,
.book-list-page .book-meta-line .meta-category {
    color: var(--text-secondary);
}

/* ===== Empty State ===== */
.book-list-page .empty-state {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-xl);
    color: var(--text-muted);
}

.book-list-page .empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.book-list-page .empty-state h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.book-list-page .empty-state p {
    font-size: 1rem;
    color: var(--text-muted);
}

/* ===== Scroll Animation ===== */
.book-list-page [data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.book-list-page [data-animate].animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
    .book-list-page .book-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    .book-list-page .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 767.98px) {
    .book-list-page .book-card {
        flex-direction: column;
        padding: var(--spacing-lg);
    }
    .book-list-page .book-cover-wrapper {
        width: 100%;
        display: flex;
        justify-content: center;
        margin-bottom: var(--spacing-lg);
    }
    .book-list-page .book-cover {
        width: 120px;
        height: 160px;
    }
    .book-list-page .book-title {
        font-size: 1.25rem;
    }
}

@media (max-width: 575.98px) {
    .book-list-page .book-card {
        padding: var(--spacing-md);
    }
}