/* ========================================
   博客详情页和增强功能样式
   ======================================== */

/* ==================== 侧边栏样式 ==================== */
.sidebar {
    position: sticky;
    top: 120px;
}

.sidebar-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-darker);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid transparent;
    border-image: var(--gradient-mixed) 1;
}

.sidebar-list {
    list-style: none;
    padding: 0;
}

.sidebar-item {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px var(--shadow-light);
    border-left: 4px solid transparent;
    position: relative;
}

.sidebar-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    /*background: var(--gradient-mixed);*/
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.sidebar-item:hover {
    transform: translateX(8px);
    box-shadow: 0 4px 16px var(--shadow-medium);
    border-left-color: var(--primary-green);
}

.sidebar-item:hover::before {
    transform: scaleY(1);
}

.sidebar-item a {
    text-decoration: none;
    color: inherit;
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.sidebar-thumb {
    width: 70px;
    height: 70px;
    object-fit: cover;
    border-radius: var(--radius-md);
    flex-shrink: 0;
    box-shadow: 0 2px 8px var(--shadow-light);
    transition: transform var(--transition-base);
}

.sidebar-item:hover .sidebar-thumb {
    transform: scale(1.1) rotate(3deg);
}

.sidebar-post-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-base);
}

.sidebar-item:hover .sidebar-post-title {
    color: var(--primary-blue);
}

/* ==================== 文章样式 ==================== */
.article-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-darker);
    line-height: 1.3;
    margin-bottom: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    color: #78909C;
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--light-blue), var(--light-green));
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-blue);
}

.article-center {
    gap: 3.5rem;
    display: grid;
    grid-template-columns: 1fr 3fr;
    padding-top: 25px;
    margin-bottom: 50px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}

.meta-item i {
    color: var(--primary-blue);
    font-size: 1.1rem;
}

.meta-item a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-base);
    position: relative;
}

.meta-item a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width var(--transition-base);
}

.meta-item a:hover {
    /*color: var(--primary-green);*/
}

.meta-item a:hover::after {
    width: 100%;
}

.article-featured-image {
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px var(--shadow-medium);
    position: relative;
}

.article-featured-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-mixed);
    z-index: 1;
}

.article-featured-image img {
    width: 100%;
    height: auto;
    transition: transform var(--transition-slow);
}

.article-featured-image:hover img {
    transform: scale(1.05);
}

/* ==================== 文章内容样式 ==================== */
.article-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.article-content h2,
.article-content h3,
.article-content h4 {
    color: var(--text-darker);
    font-weight: 700;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-left: var(--spacing-md);
}

.article-content h2 {
    font-size: 1.8rem;
    border-left: 5px solid var(--primary-blue);
    background: linear-gradient(to right, var(--light-blue), transparent);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
}

.article-content h3 {
    font-size: 1.5rem;
    border-left: 4px solid var(--primary-green);
}

.article-content h4 {
    font-size: 1.2rem;
    border-left: 3px solid var(--accent-blue);
}

.article-content p {
    margin-bottom: var(--spacing-lg);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.article-content li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    position: relative;
    list-style-type: disc;
}

.article-content ul li::before, .article-content ol li::before {
    content: '▸';
    position: absolute;
    left: calc(-1 * var(--spacing-lg));
    /*color: var(--primary-green);*/
    font-weight: bold;
}

.article-content a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    /*border-bottom: 2px solid var(--accent-blue);*/
    transition: all var(--transition-base);
    padding-bottom: 2px;
}

/*.article-content a:hover {*/
/*    !*background: var(--light-blue);*!*/
/*    padding: 2px 4px;*/
/*    border-radius: var(--radius-sm);*/
/*}*/

.article-content img {
    width: 600px;
    max-width:100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
    box-shadow: 0 8px 24px var(--shadow-medium);
    transition: transform var(--transition-base);
}

.article-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--spacing-xl) 0;
    box-shadow: 0 4px 16px var(--shadow-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article-content table th,
.article-content table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.article-content table th {
    background: var(--gradient-mixed);
    color: white;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.article-content table tr {
    transition: background-color var(--transition-fast);
}

.article-content table tr:hover {
    background: linear-gradient(to right, var(--light-blue), var(--light-green));
}

.article-content table tr:last-child td {
    border-bottom: none;
}

.article-content blockquote {
    border-left: 5px solid var(--primary-green);
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-lg) var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    font-style: italic;
    color: #546E7A;
    background: linear-gradient(to right, var(--light-green), transparent);
    border-radius: var(--radius-md);
    position: relative;
    box-shadow: 0 2px 8px var(--shadow-light);
}

.article-content blockquote::before {
    content: '"';
    position: absolute;
    left: var(--spacing-md);
    top: -10px;
    font-size: 4rem;
    color: var(--primary-green);
    opacity: 0.3;
    font-family: Georgia, serif;
}

.article-content code {
    background: linear-gradient(135deg, rgba(25, 118, 210, 0.1), rgba(76, 175, 80, 0.1));
    color: var(--primary-blue);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    font-weight: 600;
    border: 1px solid var(--accent-blue);
}

.article-content pre {
    background-color: #e5e7e9;
    border-radius: 10px;
    padding: 0 14px;
}

.article-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    border: none;
}

/* ==================== FAQ区域 ==================== */
.section-subtitle {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-darker);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 3px solid transparent;
    border-image: var(--gradient-mixed) 1;
    position: relative;
}

.faq-item {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: 0 2px 12px var(--shadow-light);
    border-left: 4px solid transparent;
}

/*.faq-item:hover {*/
/*    box-shadow: 0 8px 24px var(--shadow-medium);*/
/*    transform: translateY(-4px);*/
/*    border-left-color: var(--primary-green);*/
/*}*/

.faq-question {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.faq-question::before {
    content: 'Q';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 800;
    font-size: 1rem;
    flex-shrink: 0;
}

.faq-answer {
    color: var(--text-dark);
    line-height: 1.7;
    padding-left: calc(32px + var(--spacing-sm));
}

/* ==================== 相关文章 ==================== */
.related-post-card {
    transition: all var(--transition-base);
}

.related-post-card:hover {
    transform: translateY(-8px);
}

.related-post-img {
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px var(--shadow-light);
    position: relative;
}

.related-post-img::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.3));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: 1;
}

.related-post-card:hover .related-post-img::before {
    opacity: 1;
}

.related-post-img img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.related-post-card:hover .related-post-img img {
    transform: scale(1.15);
}

.related-post-title {
    font-weight: 600;
    color: var(--text-dark);
    margin: var(--spacing-md) 0 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-base);
}

.related-post-card:hover .related-post-title {
    color: var(--primary-blue);
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-mixed);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
    transition: all var(--transition-base);
    z-index: 1000;
    box-shadow: 0 4px 16px var(--shadow-medium);
    font-size: 1.2rem;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px var(--shadow-heavy);
}

.back-to-top::before {
    content: '↑';
    font-size: 1.5rem;
    font-weight: bold;
}

/* ==================== 搜索框 ==================== */
.search-box {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-md) calc(var(--spacing-xl) + 40px) var(--spacing-md) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    transition: all var(--transition-base);
    background: white;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(25, 118, 210, 0.1);
    background: var(--light-blue);
}

.search-box button {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-secondary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.search-box button:hover {
    background: var(--gradient-primary);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px var(--shadow-medium);
}

/* ==================== 标签云 ==================== */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag-cloud a {
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--light-blue), var(--light-green));
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: var(--text-dark);
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.tag-cloud a:hover {
    background: var(--gradient-mixed);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px var(--shadow-medium);
    border-color: white;
}

/* ==================== 社交分享 ==================== */
.social-share {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--border-color);
}

.social-share-btn {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 4px 12px var(--shadow-light);
    font-size: 1.2rem;
}

.social-share-btn:hover {
    transform: translateY(-5px) rotate(5deg);
    box-shadow: 0 8px 20px var(--shadow-medium);
}

.social-share-btn.facebook {
    background: linear-gradient(135deg, #3b5998, #4c70ba);
}

.social-share-btn.twitter {
    background: linear-gradient(135deg, #1da1f2, #4ab3f4);
}

.social-share-btn.pinterest {
    background: linear-gradient(135deg, #bd081c, #d6132b);
}

.social-share-btn.linkedin {
    background: linear-gradient(135deg, #0077b5, #00a0dc);
}

/* ==================== Latest Card样式 ==================== */
.latest-card {
    margin-bottom: var(--spacing-sm);
}

.little-card-desc {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-weight: 600;
    line-height: 1.4;
}
.category-card-second {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.related-posts {
    margin-top: 80px;
}
.top-card:hover {
    border-left-color: var(--primary-green);
}
.blog-card-title, .blog-card-text {
    display: unset !important;
    margin-top: 15px;
}

/* ==================== 响应式优化 ==================== */
@media (max-width: 1024px) {
    .article-title {
        font-size: 2rem;
    }
    .article-center {
        grid-template-columns: 2fr 3fr;
        gap: 1.5rem;
    }
    .sidebar-post-title {
        font-size: 14px;
    }

}
@media (max-width: 820px) {
    .article-center {
        grid-template-columns: 1fr;
    }
    .latest-article {
        order: 2;
        margin-top: 15px;
    }
    .article-main {
        order: 1;
    }
    .sidebar {
        display: none;
    }
    .sidebar-post-title {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: static;
    }

    .article-title {
        font-size: 1.75rem;
    }

    .article-content {
        font-size: 1rem;
    }

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

    .article-content h3 {
        font-size: 1.3rem;
    }

    .back-to-top {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        width: 45px;
        height: 45px;
    }

    /*.social-share {*/
    /*    justify-content: center;*/
    /*}*/
}
@media (max-width: 540px) {
    .article-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    .category-card-second {
        padding: 0 50px;
    }
    .sidebar-list {
        padding: 0 50px
    }
    /*.breadcrumb {*/
    /*    gap: unset;*/
    /*    display: ruby-text;*/
    /*}*/
    .latest-article {
        margin-top: 0;
    }
}