:root {
    --bg-blog: #020617;
    --card-blog: rgba(15, 23, 42, 0.7);
    --primary-blog: #6366f1;
    --accent-blog: #2dd4bf;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --border-blog: rgba(255, 255, 255, 0.08);
}

/* 博客列表布局 */
.blog-hero {
    padding: 160px 0 60px;
    text-align: center;
    background: radial-gradient(circle at top, rgba(99, 102, 241, 0.15), transparent 50%);
}

.blog-hero h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -2px;
}

.filter-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-pill {
    padding: 10px 24px;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-blog);
    color: var(--text-dim);
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.filter-pill.active,
.filter-pill:hover {
    background: var(--primary-blog);
    color: white;
    border-color: var(--primary-blog);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 100px;
}

.post-card {
    border-radius: 20px;
    overflow: hidden;
    transition: 0.4s var(--easing);
    position: relative;
    border: 1px solid var(--border-blog);
    background: var(--card-blog);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-blog);
}

.post-thumb {
    width: 100%;
    height: 200px;
    background: #1e293b;
    overflow: hidden;
}

.post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
}

.post-content {
    padding: 30px;
    flex-grow: 1;
}

.post-category {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-blog);
    text-transform: uppercase;
    margin-bottom: 12px;
    display: block;
}

.post-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.3;
}

.post-excerpt {
    color: var(--text-dim);
    font-size: 0.95rem;
    margin-bottom: 25px;
}

.post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-blog);
    font-size: 0.85rem;
    color: var(--text-dim);
}

/* 详情页组件类 */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blog), var(--accent-blog));
    z-index: 2000;
}

.btn-back-nav {
    padding: 8px 20px;
    font-size: 0.85rem;
    border-radius: 10px;
}

.article-container {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 60px;
    padding-top: 140px;
    margin-bottom: 80px;
}

.article-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin: 15px 0 25px;
    line-height: 1.1;
}

.detail-meta {
    display: flex;
    gap: 30px;
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 30px;
}

.detail-thumb {
    width: 100%;
    height: 450px;
    border-radius: 24px;
    overflow: hidden;
    margin-top: 40px;
    margin-bottom: 40px;
    border: 1px solid var(--border-blog);
}

.detail-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-content {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-main);
}

.article-content h2 {
    margin: 50px 0 25px;
    color: var(--accent-blog);
    border-bottom: 1px solid var(--border-blog);
    padding-bottom: 10px;
}

.article-content p {
    margin-bottom: 25px;
}

/* 文章内图片 */
.article-img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    margin: 32px 0;
    display: block;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-blog);
}

/* 文章内表格 */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-blog);
}

.article-content th {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-blog);
    text-align: left;
    padding: 16px;
    font-weight: 800;
    border-bottom: 2px solid var(--border-blog);
}

.article-content td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-blog);
    color: var(--text-dim);
}

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

.article-content tr:hover td {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-main);
}

.code-block {
    background: #000;
    padding: 24px;
    border-radius: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    border: 1px solid var(--border-blog);
    margin: 30px 0;
    overflow-x: auto;
}

.quote-block {
    border-left: 4px solid var(--primary-blog);
    background: rgba(99, 102, 241, 0.05);
    padding: 24px 32px;
    margin: 40px 0;
    font-style: italic;
}

.sticky-sidebar {
    padding: 30px;
    border-radius: 20px;
    position: sticky;
    top: 120px;
}

.sidebar-title {
    margin-bottom: 20px;
    font-weight: 800;
    border-bottom: 1px solid var(--border-blog);
    padding-bottom: 15px;
    color: var(--text-main);
}

/* --- 文章大纲 (TOC) 样式 --- */
.outline-container {
    margin-bottom: 40px;
}

.outline-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-left: 2px solid rgba(255, 255, 255, 0.05);
}

.outline-item {
    margin-bottom: 8px;
}

.outline-link {
    display: block;
    padding: 6px 16px;
    color: var(--text-dim);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: 0.3s var(--easing);
    border-left: 2px solid transparent;
    margin-left: -2px;
    /* 覆盖父容器边框 */
}

.outline-link:hover {
    color: var(--primary-blog);
    padding-left: 22px;
}

.outline-link.active {
    color: var(--primary-blog);
    border-left: 2px solid var(--primary-blog);
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.08) 0%, transparent 100%);
}

.related-item {
    margin-bottom: 25px;
    cursor: pointer;
}

.related-tag {
    color: var(--accent-blog);
    font-size: 0.7rem;
    font-weight: 700;
    display: block;
}

.related-title {
    font-size: 0.95rem;
    margin-top: 5px;
}

/* RTL 支持 */
[dir="rtl"] {
    font-family: 'Noto Sans Arabic', sans-serif;
    text-align: right;
}

[dir="rtl"] .article-container {
    grid-template-columns: 1fr 320px;
}

[dir="rtl"] .outline-list {
    border-left: none;
    border-right: 2px solid rgba(255, 255, 255, 0.05);
}

[dir="rtl"] .outline-link {
    padding: 6px 16px;
    border-left: none;
    border-right: 2px solid transparent;
    margin-left: 0;
    margin-right: -2px;
}

[dir="rtl"] .outline-link:hover {
    padding-left: 16px;
    padding-right: 22px;
}

[dir="rtl"] .outline-link.active {
    border-left: none;
    border-right: 2px solid var(--primary-blog);
    background: linear-gradient(-90deg, rgba(99, 102, 241, 0.08) 0%, transparent 100%);
}

[dir="rtl"] .quote-block {
    border-left: none;
    border-right: 4px solid var(--primary-blog);
}

[dir="rtl"] .article-content th {
    text-align: right;
}

[dir="rtl"] .post-meta,
[dir="rtl"] .post-content,
[dir="rtl"] .article-header,
[dir="rtl"] .detail-meta,
[dir="rtl"] .article-content {
    text-align: right;
}

[dir="rtl"] .detail-meta {
    flex-direction: row-reverse;
    justify-content: flex-end;
}

/* 移动端适配 */
@media (max-width: 1024px) {
    .article-container {
        grid-template-columns: 1fr;
    }

    .sidebar-box {
        display: none;
    }

    .article-header h1 {
        font-size: 2.2rem;
    }

    [dir="rtl"] .article-container {
        grid-template-columns: 1fr;
    }
}