/* ===========================
   Blog Styles
   Extracted for modularity (LEGO principle)
   =========================== */

/* ===========================
   Blog Navigation Bar
   =========================== */
.blog-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-6);
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-default);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.blog-nav-back {
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: color 0.2s ease;
}

.blog-nav-back:hover {
    color: var(--accent-primary);
}

.blog-nav-back svg {
    width: 16px;
    height: 16px;
    stroke-width: 2;
}

.blog-nav-title {
    color: var(--text-tertiary);
}

.blog-nav-lang {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    text-decoration: none;
    padding: 2px 8px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    white-space: nowrap;
}

.blog-nav-lang:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* ===========================
   Blog Container
   =========================== */
.blog-container {
    position: relative;
    z-index: 1;
    max-width: 760px;
    margin: 0 auto;
    padding: 80px var(--space-6) var(--space-24);
}

/* ===========================
   Blog Header (listing page)
   =========================== */
.blog-header {
    margin-bottom: var(--space-12);
}

.blog-header-title {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--accent-success);
    margin-bottom: var(--space-2);
}

.blog-header-subtitle {
    color: var(--text-tertiary);
    font-size: 0.9375rem;
}

/* ===========================
   Blog Tags (decorative filter)
   =========================== */
.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.blog-tag {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    padding: 2px 8px;
    background: rgba(59, 130, 246, 0.06);
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    transition: all 0.2s ease;
}

/* ===========================
   Blog Card (listing item)
   =========================== */
.blog-list {
    display: flex;
    flex-direction: column;
}

.blog-card {
    display: block;
    padding: var(--space-6) 0;
    border-bottom: 1px solid var(--border-subtle);
    text-decoration: none;
    color: inherit;
    transition: padding-left 0.2s ease;
}

.blog-card:first-child {
    border-top: 1px solid var(--border-subtle);
}

.blog-card:hover {
    padding-left: var(--space-4);
}

.blog-card-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.blog-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    letter-spacing: -0.01em;
    line-height: 1.4;
    transition: color 0.2s ease;
}

.blog-card:hover .blog-card-title {
    color: var(--accent-primary);
}

.blog-card-excerpt {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-3);
}

.blog-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

/* ===========================
   Post Header (terminal window)
   =========================== */
.post-header {
    margin-bottom: var(--space-8);
}

.post-meta {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-2);
}

.post-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
    letter-spacing: -0.03em;
    margin: var(--space-6) 0 var(--space-4);
}

/* ===========================
   Post Body (prose)
   =========================== */
.post-body {
    max-width: 680px;
    color: var(--text-secondary);
    line-height: 1.75;
    font-size: 1rem;
}

.post-body p {
    margin-bottom: var(--space-6);
}

.post-body h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--space-12) 0 var(--space-4);
    letter-spacing: -0.02em;
}

.post-body h2::before {
    content: '--- ';
    color: var(--accent-success);
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 400;
}

.post-body h2::after {
    content: ' ---';
    color: var(--accent-success);
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 400;
}

.post-body a {
    color: var(--accent-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.post-body a:hover {
    border-bottom-color: var(--accent-primary);
}

.post-body ul,
.post-body ol {
    padding-left: var(--space-6);
    margin-bottom: var(--space-6);
}

.post-body li {
    margin-bottom: var(--space-2);
}

.post-body blockquote {
    font-size: 1.0625rem;
    font-style: italic;
    color: var(--text-secondary);
    padding-left: var(--space-6);
    border-left: 2px solid var(--accent-primary);
    margin: var(--space-8) 0;
    line-height: 1.6;
}

.post-body code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-sm);
    padding: 0.1em 0.4em;
    color: var(--accent-primary);
}

.post-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===========================
   Post Code Block (terminal style)
   =========================== */
.post-code-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: var(--space-6) 0;
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.post-code-block-header {
    background: var(--bg-tertiary);
    padding: var(--space-2) var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    border-bottom: 1px solid var(--border-default);
}

.post-code-block-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    opacity: 0.4;
}

.post-code-block-dot.red { background: #ef4444; }
.post-code-block-dot.yellow { background: #f59e0b; }
.post-code-block-dot.green { background: #10b981; }

.post-code-block-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-left: auto;
}

.post-code-block-body {
    padding: var(--space-4) var(--space-6);
    line-height: 1.7;
    color: var(--text-tertiary);
    overflow-x: auto;
}

.post-code-block-body .cmd {
    color: var(--text-secondary);
}

.post-code-block-body .prompt {
    color: var(--accent-success);
    margin-right: var(--space-2);
    user-select: none;
}

.post-code-block-body .comment {
    color: var(--text-tertiary);
    opacity: 0.6;
}

/* ===========================
   Post Navigation (prev/next)
   =========================== */
.post-nav {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-16);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-default);
}

.post-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    text-decoration: none;
    padding: var(--space-4);
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.post-nav-item:hover {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.post-nav-item.next {
    text-align: right;
}

.post-nav-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.post-nav-title {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.4;
    transition: color 0.2s ease;
}

.post-nav-item:hover .post-nav-title {
    color: var(--accent-primary);
}

/* ===========================
   Post Back Link
   =========================== */
.post-back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-decoration: none;
    margin-top: var(--space-8);
    transition: color 0.2s ease;
}

.post-back:hover {
    color: var(--accent-primary);
}

.post-back svg {
    width: 14px;
    height: 14px;
    stroke-width: 2;
}

/* ===========================
   Blog Footer
   =========================== */
.blog-footer {
    text-align: center;
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid var(--border-default);
    color: var(--text-tertiary);
    font-size: 0.875rem;
    margin-top: var(--space-16);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
    .blog-nav {
        padding: 0 var(--space-4);
    }

    .blog-container {
        padding: 72px var(--space-4) var(--space-16);
    }

    .post-title {
        font-size: 1.5rem;
    }

    .post-nav {
        flex-direction: column;
    }

    .post-nav-item.next {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .post-title {
        font-size: 1.25rem;
    }

    .blog-card-title {
        font-size: 1rem;
    }
}