/**
 * /dianzishu 电子书页面样式
 * 百度SEO优化 - 移除内联样式
 * 注意：使用全局 .container，与soft/jichuzhishi/dl页面保持一致
 */

/* 面包屑导航 */
.dianzishu-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 15px;
}

.dianzishu-breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.dianzishu-breadcrumb-separator {
    color: var(--gray-light);
}

.dianzishu-breadcrumb-current {
    color: var(--dark);
    font-weight: 600;
}

/* 页面标题 */
.dianzishu-page-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.dianzishu-page-title-icon {
    font-size: 32px;
}

.dianzishu-page-title-text {
    color: var(--dark);
    font-weight: 600;
}

/* 页面统计标签 */
.dianzishu-stats-tags {
    display: flex;
    gap: 20px;
    margin-top: 15px;
    font-size: 14px;
    flex-wrap: wrap;
}

.dianzishu-stats-tag {
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
}

.dianzishu-stats-tag-total {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.dianzishu-stats-tag-pdf {
    background: #E8F4FF;
    color: var(--primary);
}

.dianzishu-stats-tag-free {
    background: #E8FFF3;
    color: var(--success);
}

/* 分类卡片 */
.dianzishu-category-card {
    background: white;
    padding: 25px;
    border-radius: 16px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
}

.dianzishu-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.dianzishu-category-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    padding-left: 12px;
    border-left: 4px solid var(--primary);
    margin: 0;
}

.dianzishu-category-toggle-btn {
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.3s;
}

.dianzishu-category-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* 分类网格 */
.dianzishu-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.dianzishu-category-link {
    padding: 12px;
    background: linear-gradient(135deg, #FFF, #F8F9FA);
    border-radius: 8px;
    text-decoration: none;
    color: var(--dark);
    font-size: 14px;
    transition: all 0.3s;
    text-align: center;
    border: 2px solid transparent;
    font-weight: 600;
}

.dianzishu-category-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.dianzishu-all-categories {
    display: none;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 2px dashed var(--light);
}

.dianzishu-all-categories.active {
    display: block;
}

/* 两栏布局 */
.dianzishu-two-column {
    display: grid;
    grid-template-columns: 7fr 3fr;
    gap: 30px;
    align-items: start;
}

.resource-section {
    min-width: 0;
    overflow-wrap: break-word;
    background: white;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
}

.section-header {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.section-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    padding-left: 12px;
    border-left: 4px solid var(--primary);
    margin: 0;
}

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

.sidebar {
    min-width: 0;
}

/* 响应式 - 平板 */
@media (max-width: 1024px) and (min-width: 769px) {
    .dianzishu-two-column {
        grid-template-columns: 2fr 1fr;
        gap: 20px;
    }
}

/* 响应式 - 移动端 */
@media (max-width: 768px) {
    .dianzishu-two-column {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* 资源列表项 */
.resource-item {
    padding: 15px 0;
    border-bottom: 1px solid #f5f5f5;
    transition: all 0.3s;
}

.resource-item:hover {
    background: #f8f9fa;
}

.resource-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.resource-tag {
    display: inline-block;
    padding: 3px 10px;
    font-size: 12px;
    color: #666;
    background: #f5f5f5;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.2s;
}

.resource-tag:hover {
    color: white;
    background: #3498db;
    transform: translateY(-1px);
}

.resource-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
    transition: color 0.3s;
}

.resource-title:hover {
    color: var(--primary);
}

.resource-meta {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: #666;
    flex-wrap: wrap;
}

.resource-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.resource-meta a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.resource-meta a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.resource-description {
    font-size: 13px;
    color: #666;
    margin-top: 8px;
    line-height: 1.6;
}

.resource-empty {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.resource-empty-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

/* 侧边栏 */
.sidebar-widget {
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    margin-bottom: 20px;
}

.widget-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--dark);
    padding-left: 12px;
    border-left: 4px solid var(--primary);
    margin: 0 0 20px 0;
}

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

.rank-item {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.rank-item:last-child {
    border-bottom: none;
}

.rank-number {
    display: inline-block;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #FF4757, #FF6B6B);
    color: white;
    border-radius: 6px;
    text-align: center;
    line-height: 24px;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.rank-number-new {
    background: #E8FFF3;
    color: var(--success);
    font-size: 14px;
}

.rank-title {
    color: var(--dark);
    text-decoration: none;
    font-size: 14px;
    line-height: 1.5;
    flex: 1;
    transition: color 0.3s;
}

.rank-title:hover {
    color: var(--primary);
}

/* 分页 */
.pagination {
    margin-top: 30px;
    display: flex;
    justify-content: center;
}

.pagination-wrapper {
    display: flex;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
}

.pagination-wrapper li {
    display: flex;
}

.pagination-wrapper a,
.pagination-wrapper span {
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    text-decoration: none;
    color: var(--dark);
    transition: all 0.3s;
    font-weight: 500;
}

.pagination-wrapper a:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination-wrapper .active span {
    border: 1px solid var(--primary);
    background: var(--primary);
    color: white;
}