/* ============================================
   blog.css — 博客页面样式
   ============================================ */

/* ============================
   博客页面整体布局
   ============================ */
.blog-page {
    min-height: 100vh;
    padding-top: calc(var(--nav-height, 72px) + var(--space-2xl, 48px));
    padding-bottom: var(--space-4xl, 80px);
}

.blog-header {
    text-align: center;
    margin-bottom: var(--space-3xl, 64px);
}

.blog-header .section-title {
    margin-bottom: var(--space-lg, 24px);
}

/* ============================
   搜索和筛选
   ============================ */
.blog-filters {
    display: flex;
    align-items: center;
    gap: var(--space-lg, 24px);
    margin-bottom: var(--space-2xl, 48px);
    flex-wrap: wrap;
    justify-content: center;
}

.blog-search {
    position: relative;
    flex: 1;
    max-width: 400px;
    min-width: 200px;
}

.blog-search input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    border-radius: var(--radius-lg, 12px);
    border: 1px solid var(--border-card, rgba(255, 255, 255, 0.06));
    background: var(--bg-glass, rgba(255, 255, 255, 0.03));
    color: var(--text-primary, #f0f0f0);
    font-size: var(--text-sm, 14px);
    font-family: var(--font-body, 'Inter', sans-serif);
    outline: none;
    transition: all 0.3s ease;
}

.blog-search input:focus {
    border-color: var(--accent-primary, #4F46E5);
    background: rgba(79, 70, 229, 0.05);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.blog-search input::placeholder {
    color: var(--text-tertiary, rgba(255, 255, 255, 0.3));
}

.blog-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary, rgba(255, 255, 255, 0.3));
    pointer-events: none;
}

.blog-tags-filter {
    display: flex;
    gap: var(--space-sm, 8px);
    flex-wrap: wrap;
    justify-content: center;
}

.blog-tag-btn {
    padding: 6px 16px;
    border-radius: var(--radius-full, 999px);
    border: 1px solid var(--border-card, rgba(255, 255, 255, 0.06));
    background: transparent;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    font-size: var(--text-xs, 12px);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body, 'Inter', sans-serif);
}

.blog-tag-btn:hover {
    border-color: var(--accent-primary, #4F46E5);
    color: var(--text-primary, #f0f0f0);
}

.blog-tag-btn.active {
    background: var(--accent-primary, #4F46E5);
    border-color: var(--accent-primary, #4F46E5);
    color: #fff;
}

/* ============================
   文章列表
   ============================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-xl, 32px);
}

.blog-card {
    background: var(--bg-glass, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--border-card, rgba(255, 255, 255, 0.06));
    border-radius: var(--radius-xl, 16px);
    padding: var(--space-xl, 32px);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.03, 0.98, 0.52, 0.99);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--space-md, 16px);
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #4F46E5, #06B6D4);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.blog-card:hover {
    border-color: rgba(79, 70, 229, 0.3);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.blog-card:hover::before {
    opacity: 1;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md, 16px);
    font-size: var(--text-xs, 12px);
    color: var(--text-tertiary, rgba(255, 255, 255, 0.3));
}

.blog-card-date {
    display: flex;
    align-items: center;
    gap: 4px;
}

.blog-card-readtime {
    display: flex;
    align-items: center;
    gap: 4px;
}

.blog-card-title {
    font-family: var(--font-display, 'Plus Jakarta Sans', sans-serif);
    font-size: var(--text-xl, 20px);
    font-weight: 700;
    color: var(--text-primary, #f0f0f0);
    line-height: 1.4;
    transition: color 0.3s ease;
}

.blog-card:hover .blog-card-title {
    color: var(--accent-secondary, #06B6D4);
}

.blog-card-summary {
    font-size: var(--text-sm, 14px);
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    line-height: 1.8;
    flex: 1;
}

.blog-card-tags {
    display: flex;
    gap: var(--space-xs, 4px);
    flex-wrap: wrap;
}

.blog-card-tags .tag {
    font-size: 11px;
    padding: 3px 10px;
}

.blog-card-arrow {
    position: absolute;
    bottom: var(--space-xl, 32px);
    right: var(--space-xl, 32px);
    color: var(--text-tertiary, rgba(255, 255, 255, 0.3));
    transform: translateX(-4px);
    transition: all 0.3s ease;
}

.blog-card:hover .blog-card-arrow {
    color: var(--accent-primary, #4F46E5);
    transform: translateX(0);
}

/* 空状态 */
.blog-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-4xl, 80px) var(--space-xl, 32px);
    color: var(--text-tertiary, rgba(255, 255, 255, 0.3));
}

.blog-empty-icon {
    font-size: 48px;
    margin-bottom: var(--space-lg, 24px);
    opacity: 0.5;
}

.blog-empty h3 {
    font-size: var(--text-xl, 20px);
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    margin-bottom: var(--space-sm, 8px);
}

/* ============================
   文章阅读页面
   ============================ */
.article-page {
    min-height: 100vh;
    padding-top: calc(var(--nav-height, 72px) + var(--space-2xl, 48px));
    padding-bottom: var(--space-4xl, 80px);
}

.article-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--text-sm, 14px);
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    margin-bottom: var(--space-2xl, 48px);
    transition: color 0.3s ease;
}

.article-back:hover {
    color: var(--accent-primary, #4F46E5);
}

.article-header {
    margin-bottom: var(--space-2xl, 48px);
    padding-bottom: var(--space-xl, 32px);
    border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.04));
}

.article-header .blog-card-meta {
    margin-bottom: var(--space-lg, 24px);
}

.article-title {
    font-family: var(--font-display, 'Plus Jakarta Sans', sans-serif);
    font-size: var(--text-4xl, 36px);
    font-weight: 800;
    color: var(--text-primary, #f0f0f0);
    line-height: 1.3;
    margin-bottom: var(--space-lg, 24px);
}

.article-summary {
    font-size: var(--text-lg, 18px);
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    line-height: 1.8;
    padding-left: var(--space-lg, 24px);
    border-left: 3px solid var(--accent-primary, #4F46E5);
}

/* ============================
   Markdown 渲染样式
   ============================ */
.article-content {
    max-width: 760px;
    font-size: var(--text-base, 16px);
    color: var(--text-secondary, rgba(255, 255, 255, 0.7));
    line-height: 2;
}

.article-content h1 {
    display: none;
}

.article-content h2 {
    font-family: var(--font-display, 'Plus Jakarta Sans', sans-serif);
    font-size: var(--text-2xl, 28px);
    font-weight: 700;
    color: var(--text-primary, #f0f0f0);
    margin: var(--space-2xl, 48px) 0 var(--space-lg, 24px);
    padding-bottom: var(--space-sm, 8px);
    border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.04));
}

.article-content h3 {
    font-family: var(--font-display, 'Plus Jakarta Sans', sans-serif);
    font-size: var(--text-xl, 20px);
    font-weight: 600;
    color: var(--text-primary, #f0f0f0);
    margin: var(--space-xl, 32px) 0 var(--space-md, 16px);
}

.article-content p {
    margin-bottom: var(--space-lg, 24px);
}

.article-content strong {
    color: var(--text-primary, #f0f0f0);
    font-weight: 600;
}

.article-content a {
    color: var(--accent-secondary, #06B6D4);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--space-lg, 24px);
    padding-left: var(--space-xl, 32px);
}

.article-content li {
    margin-bottom: var(--space-sm, 8px);
}

.article-content blockquote {
    margin: var(--space-xl, 32px) 0;
    padding: var(--space-md, 16px) var(--space-lg, 24px);
    border-left: 3px solid var(--accent-primary, #4F46E5);
    background: rgba(79, 70, 229, 0.05);
    border-radius: 0 var(--radius-md, 8px) var(--radius-md, 8px) 0;
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
    font-style: italic;
}

.article-content pre {
    margin: var(--space-xl, 32px) 0;
    padding: var(--space-lg, 24px);
    background: #0d1117;
    border: 1px solid rgba(79, 70, 229, 0.15);
    border-radius: var(--radius-lg, 12px);
    overflow-x: auto;
    font-size: var(--text-sm, 14px);
    line-height: 1.7;
}

.article-content code {
    font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    font-size: 0.875em;
}

.article-content p code,
.article-content li code {
    padding: 2px 8px;
    background: rgba(79, 70, 229, 0.1);
    border-radius: 4px;
    color: var(--accent-secondary, #06B6D4);
}

.article-content table {
    width: 100%;
    margin: var(--space-xl, 32px) 0;
    border-collapse: collapse;
    font-size: var(--text-sm, 14px);
}

.article-content th {
    padding: 12px 16px;
    text-align: left;
    background: rgba(79, 70, 229, 0.1);
    color: var(--text-primary, #f0f0f0);
    font-weight: 600;
    border-bottom: 2px solid rgba(79, 70, 229, 0.2);
}

.article-content td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.04));
}

.article-content img {
    max-width: 100%;
    border-radius: var(--radius-lg, 12px);
    margin: var(--space-lg, 24px) 0;
}

.article-content hr {
    border: none;
    height: 1px;
    background: var(--border-subtle, rgba(255, 255, 255, 0.04));
    margin: var(--space-2xl, 48px) 0;
}

/* ============================
   博客 Tab 切换
   ============================ */
.blog-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: var(--space-xl, 32px);
}

.blog-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full, 999px);
    background: transparent;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body, 'Inter', sans-serif);
}

.blog-tab:hover {
    border-color: rgba(79, 70, 229, 0.4);
    color: rgba(255, 255, 255, 0.8);
}

.blog-tab.active {
    background: rgba(79, 70, 229, 0.15);
    border-color: rgba(79, 70, 229, 0.4);
    color: #fff;
}

.blog-tab svg {
    opacity: 0.6;
}

.blog-tab.active svg {
    opacity: 1;
}

.tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    font-size: 11px;
    font-weight: 600;
}

.blog-tab.active .tab-count {
    background: rgba(79, 70, 229, 0.3);
}

/* ============================
   TIL 碎片笔记
   ============================ */
.til-timeline {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.til-card {
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    border-left: 3px solid #4F46E5;
    transition: all 0.3s ease;
}

.til-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(79, 70, 229, 0.3);
    transform: translateX(4px);
}

.til-date {
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
    margin-bottom: 8px;
}

.til-content {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 10px;
}

.til-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

/* ============================
   响应式
   ============================ */
@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg, 24px);
    }

    .blog-filters {
        flex-direction: column;
    }

    .blog-search {
        max-width: 100%;
        width: 100%;
    }

    .article-title {
        font-size: var(--text-2xl, 28px);
    }

    .article-content h2 {
        font-size: var(--text-xl, 20px);
    }
}