/* blog-post.css — Blog listing and blog post page styles
 * Depends on tokens.css for all CSS custom properties.
 * Covers: blog listing, post layout, TOC sidebar, article body,
 * callout boxes, method cards, comparison table, numbered steps,
 * CTA box, related posts, and further reading.
 */

/* ==========================================================================
   1. Blog Listing
   ========================================================================== */

.blog-hero {
    padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-2xl);
}

.blog-hero .container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

@media (min-width: 769px) {
    .blog-hero .container {
        padding: 0 32px;
    }
}

.blog-hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 500;
    color: var(--white);
    margin: 0 0 var(--space-md);
}

.blog-hero-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 540px;
    line-height: 1.7;
    margin: 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px var(--space-4xl);
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

.blog-card {
    display: block;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-md);
    padding: var(--space-xl);
    text-decoration: none;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.blog-card:hover {
    border-color: rgba(212, 255, 43, 0.25);
    transform: translateY(-2px);
}

.blog-card-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    color: var(--accent);
    background-color: rgba(212, 255, 43, 0.08);
    padding: 3px 8px;
    border-radius: 4px;
    margin-bottom: var(--space-md);
}

.blog-card-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--white);
    line-height: 1.35;
    margin: 0 0 var(--space-sm);
}

.blog-card-excerpt {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0 0 var(--space-md);
}

.blog-card-meta {
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--text-dim);
}

.blog-card-read {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.2s ease;
    margin-top: var(--space-sm);
}

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

.blog-card.coming-soon {
    opacity: 0.55;
    pointer-events: none;
}

.blog-card.coming-soon:hover {
    border-color: var(--border);
    transform: none;
}

/* ==========================================================================
   2. Blog Post Layout
   ========================================================================== */

.blog-breadcrumb {
    padding: calc(var(--nav-height) + var(--space-xl)) 0 0;
    max-width: 960px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.blog-breadcrumb a {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

.blog-post-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: var(--space-2xl);
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px var(--space-4xl);
}

@media (max-width: 900px) {
    .blog-post-layout {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   3. TOC Sidebar
   ========================================================================== */

.toc-sidebar {
    position: sticky;
    top: 88px;
    align-self: start;
}

@media (max-width: 900px) {
    .toc-sidebar {
        position: static;
        border: 1px solid var(--border);
        border-radius: var(--border-radius-sm);
        padding: var(--space-md);
    }
}

.toc-label {
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: var(--space-md);
    display: block;
}

@media (max-width: 900px) {
    .toc-label {
        display: none;
    }
}

.toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-link {
    display: block;
    font-size: 13px;
    color: var(--text-dim);
    text-decoration: none;
    padding: 6px 0 6px var(--space-md);
    border-left: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.toc-link:hover {
    color: var(--text-muted);
}

.toc-link.active {
    color: var(--accent);
    border-left-color: var(--accent);
}

.toc-number {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    margin-right: var(--space-sm);
}

.toc-mobile-toggle {
    display: none;
}

@media (max-width: 900px) {
    .toc-mobile-toggle {
        display: block;
        width: 100%;
        background: none;
        border: none;
        cursor: pointer;
        font-family: var(--font-mono);
        font-size: 10px;
        text-transform: uppercase;
        color: var(--text-dim);
        padding: var(--space-md) 0;
        text-align: left;
    }

    .toc-mobile-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .toc-sidebar.open .toc-mobile-content {
        max-height: 400px;
    }
}

/* ==========================================================================
   4. Blog Post Hero
   ========================================================================== */

.blog-post-hero {
    padding: var(--space-2xl) 0 var(--space-xl);
}

.blog-post-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    color: var(--accent);
    background-color: rgba(212, 255, 43, 0.08);
    padding: 3px 8px;
    border-radius: 4px;
    margin-bottom: var(--space-md);
}

.blog-post-meta {
    font-family: var(--font-display);
    font-size: 12px;
    color: var(--text-dim);
    display: inline;
    margin-left: var(--space-md);
}

.blog-post-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 500;
    color: var(--white);
    line-height: 1.2;
    margin: 0 0 var(--space-lg);
}

.blog-post-lead {
    font-size: 18px;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 600px;
    margin: 0;
}

/* ==========================================================================
   5. Article Body
   ========================================================================== */

.article-body h2 {
    font-size: 1.45rem;
    font-weight: 600;
    color: var(--white);
    margin-top: 3rem;
    margin-bottom: 1rem;
}

.article-body h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.article-body p {
    color: var(--text);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.article-body ul,
.article-body ol {
    color: var(--text);
    line-height: 1.8;
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body code {
    font-family: var(--font-mono);
    background-color: var(--bg-accent);
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

.article-body a {
    color: var(--accent);
    text-decoration: none;
}

.article-body a:hover {
    text-decoration: underline;
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5rem 0;
}

.article-body strong {
    color: var(--white);
}

/* ==========================================================================
   6. Callout Boxes
   ========================================================================== */

.callout {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 3px solid var(--border);
}

.callout-label {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    display: block;
}

.callout.tip {
    border-left-color: var(--accent);
}

.callout.tip .callout-label {
    color: var(--accent);
}

.callout.warning {
    border-left-color: #f59e0b;
}

.callout.warning .callout-label {
    color: #f59e0b;
}

.callout p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

/* ==========================================================================
   7. Method Cards
   ========================================================================== */

.method-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--space-xl);
    overflow: hidden;
}

.method-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
}

.method-card-number {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    background-color: rgba(212, 255, 43, 0.08);
    padding: 4px 10px;
    border-radius: 4px;
    flex-shrink: 0;
}

.method-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    margin: 0;
}

.method-card-body {
    padding: 0 var(--space-xl) var(--space-lg);
}

.method-card-body p {
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.method-card-body ul {
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
    padding-left: 1.5rem;
    margin: 0;
}

.method-card-body li {
    margin-bottom: 0.35rem;
}

.method-card-body strong {
    color: var(--white);
}

.method-card-footer {
    background-color: rgba(212, 255, 43, 0.06);
    border-top: 1px solid var(--border);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
}

/* ==========================================================================
   8. Comparison Table
   ========================================================================== */

.comparison-table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--space-xl);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th {
    background-color: var(--bg-card);
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    color: var(--accent);
    padding: var(--space-md);
    border-bottom: 1px solid var(--border);
    text-align: left;
}

.comparison-table td {
    padding: var(--space-md);
    font-size: 14px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.comparison-table td:first-child {
    color: var(--text);
    font-weight: 500;
}

.comparison-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.check {
    color: var(--success);
    font-weight: 700;
}

.cross {
    color: #ef4444;
    font-weight: 700;
}

.neutral {
    color: var(--text-muted);
}

/* ==========================================================================
   9. Numbered Steps
   ========================================================================== */

.numbered-steps {
    margin-bottom: 1.5rem;
}

.step {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.step-number {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent);
    color: var(--bg);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    border-radius: 4px;
    margin-top: 2px;
}

.step-text {
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
}

.step-text strong {
    color: var(--white);
}

/* ==========================================================================
   10. CTA Box
   ========================================================================== */

.cta-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    text-align: center;
    margin: var(--space-2xl) 0;
}

.cta-box-title {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 500;
    color: var(--white);
    margin: 0 0 var(--space-md);
}

.cta-box-text {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 480px;
    margin: 0 auto var(--space-lg);
}

.cta-box-btn {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    padding: 14px 28px;
    background-color: var(--accent);
    color: var(--bg);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    opacity: 1;
}

.cta-box-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(212, 255, 43, 0.25);
}

.cta-box-sub {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    margin-top: var(--space-md);
}

/* ==========================================================================
   11. Related Posts
   ========================================================================== */

.related-posts {
    padding: var(--space-2xl) 0 var(--space-4xl);
    max-width: 960px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.related-posts-label {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.related-posts-label-line {
    width: 16px;
    height: 1px;
    background-color: var(--accent);
    flex-shrink: 0;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

@media (max-width: 768px) {
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   12. Further Reading
   ========================================================================== */

.further-reading {
    font-size: 13px;
    color: var(--text-dim);
}

.further-reading a {
    color: var(--accent);
    text-decoration: none;
}

.further-reading a:hover {
    text-decoration: underline;
}