/* CSS Custom Properties for theming */
:root {
    /* Colors - Light theme */
    --color-ink: #1a1a1a;
    --color-ink-light: #2d2d2d;
    --color-ink-muted: #6b7280;
    --color-paper: #fafaf9;
    --color-accent: #2563eb;
    --color-muted: #71717a;
    --color-muted-light: #a1a1aa;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;

    /* Typography */
    --font-serif: 'Crimson Pro', Georgia, Cambria, 'Times New Roman', serif;
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', Consolas, Monaco, 'Courier New', monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Layout */
    --max-width-reading: 800px;
    --max-width-prose: 800px;

    /* Transitions */
    --transition-colors: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

/* Dark theme */
:root.dark {
    --color-ink: #e5e7eb;
    --color-ink-light: #d1d5db;
    --color-ink-muted: #9ca3af;
    --color-paper: #1a1f2e;
    --color-accent: #60a5fa;
    --color-muted: #9ca3af;
    --color-muted-light: #6b7280;
    --color-border: #374151;
    --color-border-light: #4b5563;
}

/* Reset and base styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    line-height: 1.5;
    color: var(--color-ink);
    background-color: var(--color-paper);
    transition: var(--transition-colors);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.site-nav {
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-paper);
}

.nav-container {
    max-width: var(--max-width-reading);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) 0;
}

.site-title {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-ink);
    text-decoration: none;
    transition: var(--transition-colors);
}

.site-title:hover {
    color: var(--color-ink-light);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--color-muted);
    text-decoration: none;
    transition: var(--transition-colors);
    font-family: var(--font-sans);
    font-size: 0.875rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-ink);
}

.search-button,
.dark-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    background: none;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    border-radius: 0.5rem;
    transition: var(--transition-colors);
}

.search-button:hover,
.dark-toggle:hover {
    background-color: var(--color-border-light);
    color: var(--color-ink);
}

/* Main content */
.main-content {
    flex: 1;
}

.content-container {
    max-width: var(--max-width-reading);
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
}

/* Page header */
.page-header {
    margin-bottom: var(--space-2xl);
}

.page-header h1 {
    font-family: var(--font-sans);
    font-size: 3.75rem;
    font-weight: 700;
    color: var(--color-ink);
    margin: 0 0 var(--space-md) 0;
    line-height: 1.2;
}

.page-description {
    font-size: 1.375rem;
    color: var(--color-muted);
    margin: 0 0 var(--space-xl) 0;
}

/* Posts list */
.posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
}

.post-preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.post-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.post-title {
    font-family: var(--font-sans);
    font-size: 1.875rem;
    font-weight: 600;
    color: var(--color-ink);
    margin: 0 0 var(--space-sm) 0;
    line-height: 1.35;
    transition: var(--transition-colors);
}

.post-link:hover .post-title {
    color: var(--color-accent);
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin-bottom: var(--space-sm);
}

.meta-separator {
    color: var(--color-muted-light);
}

.post-description {
    color: var(--color-ink-light);
    margin: 0 0 var(--space-sm) 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Tags */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background-color: var(--color-border-light);
    color: var(--color-muted);
    text-decoration: none;
    border-radius: 0.25rem;
    transition: var(--transition-colors);
}

.tag:hover {
    background-color: var(--color-accent);
    color: white;
}

/* Tag filter (collapsible) */
.tag-filter {
    margin-bottom: var(--space-2xl);
}

.tag-filter-summary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    list-style: none;
    margin-bottom: 0.75rem;
    color: var(--color-ink);
    transition: var(--transition-colors);
}

.tag-filter-summary:hover {
    color: var(--color-accent);
}

.tag-filter-summary::-webkit-details-marker {
    display: none;
}

.tag-filter-icon {
    width: 1rem;
    height: 1rem;
    transition: transform 0.2s ease;
}

.tag-filter[open] .tag-filter-icon {
    transform: rotate(90deg);
}

.tag-filter-label {
    font-size: 0.875rem;
    font-family: var(--font-sans);
    font-weight: 600;
}

.tag-filter-count {
    font-size: 0.75rem;
    color: var(--color-muted);
    margin-left: 0.25rem;
}

.tag-filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-left: 1.5rem;
    margin-top: 0.75rem;
}

.tag-filter-clear {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-accent);
    margin-left: 0.5rem;
}

.tag-filter-clear:hover {
    text-decoration: underline;
}

.tag-active {
    background-color: var(--color-accent) !important;
    color: white !important;
}

/* Series list */
.series-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.series-card {
    display: block;
    padding: var(--space-lg);
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: var(--transition-colors);
}

.series-card:hover {
    border-color: var(--color-accent);
}

.series-card-title {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-ink);
    margin: 0 0 var(--space-sm) 0;
    transition: var(--transition-colors);
}

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

.series-card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-muted);
    margin-bottom: var(--space-sm);
}

.series-card-meta svg {
    width: 1rem;
    height: 1rem;
}

.series-card-description {
    font-size: 1rem;
    color: var(--color-ink-light);
    line-height: 1.6;
    margin: 0;
}

/* Series detail page */
.series-detail-header {
    margin-bottom: var(--space-2xl);
}

.breadcrumb ol {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-family: var(--font-mono);
    color: var(--color-muted);
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-lg) 0;
}

.breadcrumb a {
    color: var(--color-muted);
    text-decoration: none;
    transition: var(--transition-colors);
}

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

.breadcrumb-separator {
    color: var(--color-muted-light);
}

.breadcrumb-current {
    color: var(--color-ink);
}

.series-detail-title {
    font-family: var(--font-sans);
    font-size: 3.75rem;
    font-weight: 700;
    color: var(--color-ink);
    margin: 0 0 var(--space-md) 0;
    line-height: 1.2;
}

.series-detail-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-bottom: var(--space-lg);
}

.series-detail-meta svg {
    width: 1.25rem;
    height: 1.25rem;
}

.series-posts {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.series-post-item {
    /* No specific styles needed, just a container */
}

.series-post-link {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: var(--transition-colors);
}

.series-post-link:hover {
    border-color: var(--color-accent);
}

.series-post-number {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-border-light);
    color: var(--color-ink);
    font-family: var(--font-mono);
    font-weight: 700;
    transition: var(--transition-colors);
}

.series-post-link:hover .series-post-number {
    background-color: var(--color-accent);
    color: white;
}

.series-post-info {
    flex: 1;
    min-width: 0;
}

.series-post-title {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-ink);
    margin: 0 0 var(--space-xs) 0;
    transition: var(--transition-colors);
}

.series-post-link:hover .series-post-title {
    color: var(--color-accent);
}

.series-post-description {
    font-size: 0.875rem;
    color: var(--color-ink-light);
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* About page */
.about-content {
    max-width: 65ch;
}

.about-content h1 {
    font-family: var(--font-sans);
    font-size: 3.75rem;
    font-weight: 700;
    color: var(--color-ink);
    margin: 0 0 var(--space-xl) 0;
    line-height: 1.2;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.about-text p {
    font-size: 1.375rem;
    line-height: 1.5;
    color: var(--color-ink-light);
    margin: 0;
}

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

.about-text a:hover {
    text-decoration: underline;
}

/* Blog post layout */
.blog-post {
    max-width: var(--max-width-reading);
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
}

.post-header {
    margin-bottom: var(--space-2xl);
}

.post-header .post-title {
    font-family: var(--font-sans);
    font-size: 3.75rem;
    font-weight: 700;
    color: var(--color-ink);
    margin: 0 0 var(--space-lg) 0;
    line-height: 1.2;
}

.post-header .post-meta {
    margin-bottom: var(--space-md);
}

.post-category {
    color: var(--color-accent);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

.post-category:hover {
    text-decoration: underline;
}

.post-header .post-tags {
    margin-bottom: var(--space-xl);
}

.post-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 0;
}

/* Series navigation */
.series-nav {
    margin-bottom: var(--space-2xl);
}

.series-nav-container {
    background-color: var(--color-border-light);
    border-radius: 0.5rem;
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
}

.series-nav-header {
    margin-bottom: var(--space-md);
}

.series-nav-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.series-nav-label svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-accent);
}

.series-nav-label span {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-muted);
}

.series-nav-title {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-ink);
}

.series-nav-title a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-colors);
}

.series-nav-title a:hover {
    color: var(--color-accent);
}

.series-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.series-nav-item {
    margin: 0;
}

.series-nav-link {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 0.375rem;
    text-decoration: none;
    transition: var(--transition-colors);
}

.series-nav-link:hover {
    background-color: var(--color-paper);
}

.series-nav-link.current {
    background-color: rgba(37, 99, 235, 0.1);
    border-left: 4px solid var(--color-accent);
}

.series-nav-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    background-color: var(--color-border);
    color: var(--color-muted);
    border-radius: 50%;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
    transition: var(--transition-colors);
}

/* Dark mode: swap series nav container and pill colors */
:root.dark .series-nav-container {
    background-color: var(--color-border);
}

:root.dark .series-nav-number {
    background-color: var(--color-border-light);
}

.series-nav-link:hover .series-nav-number {
    background-color: var(--color-accent);
    color: white;
}

.series-nav-link.current .series-nav-number {
    background-color: var(--color-accent);
    color: white;
}

.series-nav-content {
    flex: 1;
    min-width: 0;
}

.series-nav-post-title {
    font-size: 0.875rem;
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--color-ink);
    transition: var(--transition-colors);
}

.series-nav-link:hover .series-nav-post-title {
    color: var(--color-accent);
}

.series-nav-current-label {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-accent);
    margin-top: 0.25rem;
}

.series-nav-overview {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--color-accent);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

.series-nav-overview:hover {
    text-decoration: underline;
}

/* Post content */
.post-content {
    max-width: var(--max-width-prose);
    font-size: 1.375rem;
    line-height: 1.5;
}

.post-content img {
    max-width: 100%;
    height: auto;
    display: block;
}

.post-content h2 {
    font-family: var(--font-sans);
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--color-ink);
    margin: 1.5em 0 0.75em 0;
    line-height: 1.25;
}

.post-content h3 {
    font-family: var(--font-sans);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-ink);
    margin: 1.4em 0 0.5em 0;
    line-height: 1.3;
}

.post-content p {
    margin: 1.25em 0;
}

.post-content a {
    color: var(--color-accent);
    text-decoration: none;
}

.post-content a:hover {
    text-decoration: underline;
}

.post-content strong {
    font-weight: 600;
    color: var(--color-ink);
}

.post-content em {
    font-style: italic;
}

.post-content blockquote {
    border-left: 2px solid var(--color-muted-light);
    padding-left: var(--space-lg);
    margin: 1.5em 0;
    font-style: italic;
    color: var(--color-ink-light);
}

.post-content ul,
.post-content ol {
    margin: 1.25em 0;
    padding-left: 1.5em;
}

.post-content li {
    margin: 0.5em 0;
}

/* Inline code (not in pre blocks) */
.post-content :not(pre) > code {
    background-color: var(--color-border-light);
    padding: 0 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
    font-family: var(--font-mono);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-3xl);
}

.footer-container {
    max-width: var(--max-width-reading);
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.copyright {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--color-muted);
    margin: 0;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-muted);
    text-decoration: none;
    transition: var(--transition-colors);
}

.footer-links a:hover {
    color: var(--color-ink);
}

/* Category dropdown */
.category-dropdown {
    position: relative;
}

.category-dropdown-button {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: none;
    border: none;
    color: var(--color-muted);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-colors);
}

.category-dropdown-button:hover {
    color: var(--color-ink);
}

.category-dropdown-icon {
    width: 1rem;
    height: 1rem;
    transition: transform 0.2s ease;
}

.category-dropdown:hover .category-dropdown-icon {
    transform: rotate(180deg);
}

.category-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    width: 14rem;
    background-color: var(--color-paper);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 50;
}

.category-dropdown:hover .category-dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.category-dropdown-menu-inner {
    padding: 0.5rem 0;
}

.category-dropdown-item {
    display: block;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-family: var(--font-sans);
    color: var(--color-ink);
    text-decoration: none;
    transition: var(--transition-colors);
}

.category-dropdown-item:hover {
    background-color: var(--color-border-light);
}

/* Search dialog */
.search-dialog-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 50;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.search-dialog-overlay.hidden {
    display: none;
}

.search-dialog-overlay.visible {
    opacity: 1;
}

.search-dialog-container {
    position: fixed;
    inset: 0;
    overflow-y: auto;
}

.search-dialog-wrapper {
    display: flex;
    min-height: 100%;
    align-items: flex-start;
    justify-content: center;
    padding: 1rem;
    padding-top: 10vh;
}

.search-dialog-panel {
    position: relative;
    width: 100%;
    max-width: 42rem;
    background-color: var(--color-paper);
    border-radius: 0.75rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    transform: scale(0.95);
    opacity: 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.search-dialog-panel.visible {
    transform: scale(1);
    opacity: 1;
}

.search-dialog-content {
    padding: 1.5rem;
}

.search-input-wrap {
    position: relative;
}

.search-input-icon {
    position: absolute;
    top: 50%;
    left: 1rem;
    width: 1.125rem;
    height: 1.125rem;
    color: var(--color-muted);
    pointer-events: none;
    transform: translateY(-50%);
}

#search-input {
    width: 100%;
    min-height: 3.25rem;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    outline: none;
    appearance: none;
    background-color: var(--color-border-light);
    color: var(--color-ink);
    font: 1rem/1.5 var(--font-sans);
    box-shadow: inset 0 1px 1px rgba(15, 23, 42, 0.04);
    transition: var(--transition-colors), box-shadow 0.2s ease;
}

#search-input::placeholder {
    color: var(--color-muted);
}

#search-input:hover {
    border-color: var(--color-muted-light);
}

#search-input:focus {
    border-color: var(--color-accent);
    background-color: var(--color-paper);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 20%, transparent);
}

.search-dialog-hint {
    padding: 0 1.5rem 1rem 1.5rem;
    font-size: 0.75rem;
    color: var(--color-muted);
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-dialog-hint kbd {
    padding: 0.25rem 0.5rem;
    background-color: var(--color-border-light);
    border-radius: 0.25rem;
}

/* Reading progress bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent) 100%);
    z-index: 100;
    transition: width 0.1s ease-out;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 2.75rem;
    height: 2.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-ink);
    color: var(--color-paper);
    border: none;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease;
    cursor: pointer;
    z-index: 40;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: scale(1.1);
}

.back-to-top svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Dark mode toggle icons */
.theme-toggle-icon {
    width: 1.25rem;
    height: 1.25rem;
}

.theme-toggle-light-icon {
    display: none;
}

:root.dark .theme-toggle-light-icon {
    display: block;
}

:root.dark .theme-toggle-dark-icon {
    display: none;
}

/* Utility classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.icon {
    width: 1.25rem;
    height: 1.25rem;
}

.icon-sm {
    width: 1rem;
    height: 1rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav-content {
        padding: var(--space-md) 0;
    }

    .site-title {
        display: none;
    }

    .page-header h1,
    .post-header .post-title {
        font-size: 2.875rem;
    }

    .content-container,
    .blog-post {
        padding: var(--space-xl) var(--space-md);
    }

    .footer-container {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .category-dropdown-menu {
        right: 0;
        left: auto;
    }
}

@media (max-width: 480px) {
    .page-header h1,
    .post-header .post-title {
        font-size: 2.25rem;
    }

    .post-content {
        font-size: 1.25rem;
    }

    .post-content h2 {
        font-size: 1.875rem;
    }

    .post-content h3 {
        font-size: 1.5rem;
    }
}
/* Custom code fence runtime */
.code-block {
    position: relative;
    max-width: 100%;
    margin: var(--space-lg) 0;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    overflow: hidden;
    background: #1a1f2e;
}
.code-block-title {
    padding: 0.5rem 5rem 0.5rem 1rem;
    color: #cdd6f4;
    background: #24283b;
    font: 0.8125rem/1.4 var(--font-sans);
}
.code-block pre {
    max-width: 100%;
    margin: 0;
    overflow-x: auto;
    border: 0;
    border-radius: 0;
    scrollbar-color: #585b70 #1a1f2e;
}
.code-line {
    display: block;
    min-width: max-content;
    min-height: 1.6em;
    padding: 0 1rem;
    color: #cdd6f4;
    font: 0.875rem/1.6 var(--font-mono);
    white-space: pre;
}
.code-line-number {
    display: inline-block;
    width: 2.5rem;
    margin-right: 0.875rem;
    color: #6c7086;
    text-align: right;
    user-select: none;
}
.code-line-highlight { background: rgba(137, 180, 250, 0.14); }
.code-copy {
    position: absolute;
    top: 0.4rem;
    right: 0.5rem;
    padding: 0.35rem 0.6rem;
    border: 1px solid #585b70;
    border-radius: 0.25rem;
    color: #cdd6f4;
    background: #24283b;
    font: 0.75rem/1.2 var(--font-sans);
    cursor: pointer;
}
.code-copy:hover { background: #313244; }
.code-collapse { min-width: max-content; margin: 0; }
.code-collapse summary {
    padding: 0.35rem 1rem;
    color: #a6adc8;
    background: #24283b;
    font: 0.75rem/1.4 var(--font-sans);
    cursor: pointer;
}

@media (max-width: 480px) {
    .code-line {
        font-size: 0.8125rem;
    }
}

/* Fuse search results */
.search-results { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.5rem; }
.search-result { display: block; padding: 1rem; border: 1px solid var(--color-border); border-radius: 0.5rem; color: var(--color-ink); text-decoration: none; }
.search-result:hover { border-color: var(--color-accent); }
.search-result-title { margin: 0 0 0.5rem; font: 600 1.125rem var(--font-sans); }
.search-result-description, .search-result-excerpt { margin: 0; color: var(--color-ink-light); font-size: 0.9rem; }
.search-result-meta { margin-top: 0.5rem; color: var(--color-muted); font: 0.75rem var(--font-sans); }
.search-status { color: var(--color-muted); font: 0.875rem var(--font-sans); }