/**
 * 博客页面专属样式
 * Blog Page Styles
 */

/* ========================================
   Page Header (复用首页样式)
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 180px 0 80px;
    text-align: center;
    color: var(--bg-white);
    margin-top: 80px;
}

.page-header-content h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1rem;
    opacity: 0.9;
}

.breadcrumb a {
    color: var(--bg-white);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--secondary-color);
}

.breadcrumb i {
    font-size: 0.8rem;
}

/* ========================================
   Blog Page Header
   ======================================== */
.blog-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.blog-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 50px;
}

/* ========================================
   Blog Post Card
   ======================================== */
.blog-post-card {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    margin-bottom: 40px;
    display: grid;
    grid-template-columns: 300px 1fr;
}

.blog-post-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.post-image {
    position: relative;
    height: 100%;
    min-height: 250px;
}

.post-image .image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
}

.post-image .image-placeholder i {
    font-size: 6rem;
    opacity: 0.3;
}

.post-category {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 8px 16px;
    background: var(--secondary-color);
    color: var(--bg-white);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
}

.post-content {
    padding: 35px;
    display: flex;
    flex-direction: column;
}

.post-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.post-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.post-meta i {
    color: var(--primary-color);
}

.post-title {
    font-size: 1.6rem;
    margin-bottom: 15px;
    line-height: 1.4;
    /* 限制标题为 2 行 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.post-title a {
    color: var(--text-dark);
    transition: var(--transition);
}

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

.post-excerpt {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 25px;
    flex: 1;
    /* 限制描述为 3 行 */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.read-more-btn {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.read-more-btn:hover {
    gap: 15px;
    color: var(--primary-light);
}

.post-tags {
    display: flex;
    gap: 10px;
}

.tag {
    padding: 5px 12px;
    background: var(--bg-light);
    color: var(--text-medium);
    font-size: 0.85rem;
    border-radius: 15px;
}

/* ========================================
   Blog Pagination
   ======================================== */
.blog-pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.page-btn {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-medium);
    font-weight: 600;
    transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--bg-white);
}

.page-btn.next {
    width: auto;
    padding: 0 20px;
}

/* ========================================
   Blog Sidebar
   ======================================== */
.blog-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--bg-white);
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
}

.widget-title {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 25px;
    font-weight: 700;
    position: relative;
    padding-bottom: 12px;
}

.widget-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
}

/* Search Form */
.search-form {
    display: flex;
    gap: 10px;
}

.search-form input {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-family: inherit;
}

.search-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-form button {
    padding: 12px 20px;
    background: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.search-form button:hover {
    background: var(--primary-light);
}

/* Category List */
.category-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.category-list li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    color: var(--text-medium);
    transition: var(--transition);
}

.category-list li a:hover {
    background: var(--primary-color);
    color: var(--bg-white);
}

.category-name {
    font-weight: 500;
}

.category-count {
    background: var(--bg-white);
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 0.85rem;
}

.category-list li a:hover .category-count {
    background: rgba(255, 255, 255, 0.2);
}

/* Recent Posts */
.recent-posts {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.recent-posts li a {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-dark);
    transition: var(--transition);
}

.recent-posts li:last-child a {
    border-bottom: none;
}

.recent-posts li a:hover {
    color: var(--primary-color);
}

.recent-title {
    font-weight: 500;
    line-height: 1.5;
    /* 限制标题为 2 行 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.recent-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Tag Cloud */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-item {
    padding: 8px 15px;
    background: var(--bg-light);
    color: var(--text-medium);
    font-size: 0.9rem;
    border-radius: 20px;
    transition: var(--transition);
}

.tag-item:hover {
    background: var(--primary-color);
    color: var(--bg-white);
}

/* CTA Widget */
.cta-widget {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    text-align: center;
}

.cta-widget .widget-title {
    color: var(--bg-white);
}

.cta-widget .widget-title::after {
    background: var(--secondary-color);
}

.cta-widget p {
    opacity: 0.9;
    margin-bottom: 25px;
    line-height: 1.7;
}

.cta-btn-small {
    display: inline-block;
    padding: 14px 30px;
    background: var(--secondary-color);
    color: var(--bg-white);
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.cta-btn-small:hover {
    background: var(--secondary-hover);
    transform: translateY(-3px);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-sidebar {
        position: static;
    }

    .blog-post-card {
        grid-template-columns: 1fr;
    }

    .post-image {
        min-height: 250px;
    }
}

@media (max-width: 768px) {
    .blog-post-card {
        margin-bottom: 30px;
    }

    .post-content {
        padding: 25px;
    }

    .post-title {
        font-size: 1.4rem;
    }

    .post-footer {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .post-meta {
        flex-direction: column;
        gap: 10px;
    }

    .post-tags {
        flex-wrap: wrap;
    }
}