/* =============================================================================
   Static Blog - Dark Theme Stylesheet
   ============================================================================= */

/* -----------------------------------------------------------------------------
   CSS Variables
   ----------------------------------------------------------------------------- */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0d1117;
    --color-bg-secondary: #161b22;
    --color-bg-tertiary: #21262d;
    --color-bg-card: #1c2128;
    --color-bg-hover: #252b33;
    
    --color-text-primary: #e6edf3;
    --color-text-secondary: #8b949e;
    --color-text-muted: #6e7681;
    
    --color-accent: #a85c7a;
    --color-accent-hover: #c98ba8;
    --color-accent-subtle: rgba(168, 92, 122, 0.15);
    --color-accent-code: #d4a5c0;
    
    --color-border: #30363d;
    --color-border-subtle: #21262d;
    
    --color-tag-bg: rgba(168, 92, 122, 0.15);
    --color-tag-text: #d4a5c0;
    
    /* Typography */
    --font-sans: 'Atkinson Hyperlegible', 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Merriweather', 'Georgia', serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.75;
    
    /* Post Card Thumbnails */
    --thumbnail-width: 280px;
    --thumbnail-height: 150px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Layout */
    --sidebar-width: 280px;
    --content-max-width: 800px;
    --container-max-width: 1200px;
    
    /* Borders */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5);
}

/* -----------------------------------------------------------------------------
   Reset & Base Styles
   ----------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

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

/* -----------------------------------------------------------------------------
   Layout
   ----------------------------------------------------------------------------- */
.container {
    display: flex;
    min-height: 100vh;
    max-width: var(--container-max-width);
    margin: 0 auto;
}

/* -----------------------------------------------------------------------------
   Sidebar
   ----------------------------------------------------------------------------- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    border-right: 1px solid var(--color-border);
    padding: var(--spacing-2xl) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: sticky;
    top: var(--spacing-2xl);
}

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

.profile-image {
    width: 140px;
    height: 140px;
    border-radius: var(--border-radius-full);
    object-fit: cover;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: block;
}

.profile-link:hover .profile-image {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(88, 166, 255, 0.3);
}

.author-name-link {
    display: inline-block;
    text-decoration: none;
    color: inherit;
}

.author-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
    transition: color var(--transition-fast);
}

.author-name-link:hover .author-name {
    color: var(--color-accent);
}

.author-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.social-links {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-md);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xl);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
}

/* -----------------------------------------------------------------------------
   Main Content
   ----------------------------------------------------------------------------- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--spacing-2xl) var(--spacing-xl);
    max-width: calc(var(--content-max-width) + var(--spacing-xl) * 2);
}

.page-header {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.page-header p {
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

/* -----------------------------------------------------------------------------
   Post Cards (Index, Category, Tag pages)
   ----------------------------------------------------------------------------- */
.posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.post-card {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
}

.post-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.post-link {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    color: inherit;
    text-decoration: none;
    flex: 0 0 auto;
    flex-wrap: nowrap;
    box-sizing: border-box;
}


.post-thumbnail {
    flex-shrink: 0;
    width: var(--thumbnail-width, 200px);
    min-width: var(--thumbnail-width, 200px);
    max-width: var(--thumbnail-width, 200px);
    min-height: var(--thumbnail-height, 150px);
    align-self: stretch;
    overflow: hidden;
    background: var(--color-bg-tertiary);
    display: flex;
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-normal);
    display: block;
    flex: 1;
}

.post-card:hover .post-thumbnail img {
    transform: scale(1.05);
}

.post-content {
    flex: 1 1 auto;
    min-width: 0;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    overflow: hidden;
}

.post-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    transition: color var(--transition-fast);
}

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

.post-meta-inline {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.post-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.post-category {
    display: inline-block;
    margin: 0 var(--spacing-xs);
}

.post-category a {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-tag-bg);
    color: var(--color-tag-text);
    border-radius: var(--border-radius-sm);
}

.post-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    display: -webkit-box;
    line-clamp: 4;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-tags {
    display: inline-flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    align-items: center;
}

.tag {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-tag-bg);
    color: var(--color-tag-text);
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast);
}

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

/* -----------------------------------------------------------------------------
   Pagination
   ----------------------------------------------------------------------------- */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.pagination-link {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.pagination-link:hover:not(.disabled) {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.pagination-link.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    color: var(--color-text-muted);
}

.pagination-numbers {
    display: flex;
    gap: var(--spacing-xs);
}

.pagination-numbers a,
.pagination-current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
}

.pagination-numbers a {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.pagination-numbers a:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.pagination-current {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    font-weight: 600;
}

/* -----------------------------------------------------------------------------
   Taxonomies Sidebar (Category & Tags)
   ----------------------------------------------------------------------------- */
.taxonomies {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.taxonomy-section {
    margin-bottom: var(--spacing-lg);
}

.taxonomy-section h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.taxonomy-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.taxonomy-list li a {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-tag-bg);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-tag-text);
    transition: all var(--transition-fast);
}

.taxonomy-list li a:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.tags-cloud li a {
    background: var(--color-tag-bg);
    color: var(--color-tag-text);
}

/* -----------------------------------------------------------------------------
   Single Post Page
   ----------------------------------------------------------------------------- */
.post-full {
    max-width: var(--content-max-width);
}

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

.post-header .post-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.post-header .post-tags {
    margin-top: var(--spacing-md);
}

.post-thumbnail-full {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.post-thumbnail-full img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}

/* -----------------------------------------------------------------------------
   Post Body Content
   ----------------------------------------------------------------------------- */
.post-body {
    font-family: var(--font-serif);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-primary);
}

.post-body h1,
.post-body h2,
.post-body h3,
.post-body h4,
.post-body h5,
.post-body h6 {
    font-family: var(--font-sans);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
}

.post-body h1 { font-size: var(--font-size-3xl); }
.post-body h2 { font-size: var(--font-size-2xl); }
.post-body h3 { font-size: var(--font-size-xl); }
.post-body h4 { font-size: var(--font-size-lg); }

.post-body p {
    margin-bottom: var(--spacing-lg);
}

.post-body a {
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-underline-offset: 2px;
}

.post-body a:hover {
    text-decoration-color: var(--color-accent-hover);
}

.post-body ul,
.post-body ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.post-body li {
    margin-bottom: var(--spacing-sm);
}

.post-body blockquote {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid var(--color-accent);
    background: var(--color-bg-secondary);
    font-style: italic;
    color: var(--color-text-secondary);
}

.post-body blockquote p:last-child {
    margin-bottom: 0;
}

.post-body hr {
    border: none;
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-2xl) 0;
}

.post-body img {
    margin: var(--spacing-xl) auto;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
}

.post-body figure {
    margin: var(--spacing-xl) 0;
}

.post-body figcaption {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

.post-body table {
    width: 100%;
    margin: var(--spacing-xl) 0;
    border-collapse: collapse;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
}

.post-body th,
.post-body td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.post-body th {
    background: var(--color-bg-secondary);
    font-weight: 600;
    color: var(--color-text-primary);
}

.post-body tr:hover td {
    background: var(--color-bg-tertiary);
}

/* -----------------------------------------------------------------------------
   Code & Syntax Highlighting
   ----------------------------------------------------------------------------- */
.post-body code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--border-radius-sm);
    color: var(--color-accent-code);
}

.post-body pre {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow-x: auto;
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.post-body pre code {
    background: none;
    padding: 0;
    color: var(--color-text-primary);
}

/* Syntax highlighting - Adapted from Pygments/monokai style */
.sourceCode { background: var(--color-bg-secondary); }

/* Keywords, operators */
.sourceCode .kw { color: #f92672; font-weight: bold; }  /* Keyword */
.sourceCode .op { color: #f92672; }                      /* Operator */
.sourceCode .cf { color: #f92672; font-weight: bold; }  /* Control Flow */

/* Data types */
.sourceCode .dt { color: #66d9ef; }                      /* DataType */
.sourceCode .bu { color: #66d9ef; }                      /* Built-in */

/* Strings */
.sourceCode .st { color: #e6db74; }                      /* String */
.sourceCode .ch { color: #e6db74; }                      /* Character */
.sourceCode .ss { color: #e6db74; }                      /* Special String */

/* Numbers */
.sourceCode .dv { color: #ae81ff; }                      /* Decimal Value */
.sourceCode .bn { color: #ae81ff; }                      /* Base-N */
.sourceCode .fl { color: #ae81ff; }                      /* Float */

/* Functions, attributes */
.sourceCode .fu { color: #a6e22e; }                      /* Function */
.sourceCode .at { color: #a6e22e; }                      /* Attribute */

/* Variables */
.sourceCode .va { color: #fd971f; }                      /* Variable */

/* Comments */
.sourceCode .co { color: #75715e; font-style: italic; }  /* Comment */

/* Preprocessor, imports */
.sourceCode .pp { color: #f92672; }                      /* Preprocessor */
.sourceCode .im { color: #f92672; }                      /* Import */
.sourceCode .in { color: #75715e; font-style: italic; }  /* Information */

/* Other */
.sourceCode .al { color: #f92672; font-weight: bold; }  /* Alert */
.sourceCode .er { color: #f92672; background: #1e0010; } /* Error */
.sourceCode .wa { color: #fd971f; font-style: italic; }  /* Warning */
.sourceCode .cn { color: #66d9ef; }                      /* Constant */
.sourceCode .sc { color: #e6db74; }                      /* Special Char */
.sourceCode .vs { color: #e6db74; }                      /* Verbatim String */
.sourceCode .an { color: #75715e; font-weight: bold; }  /* Annotation */
.sourceCode .cv { color: #75715e; font-weight: bold; }  /* Comment Var */
.sourceCode .do { color: #75715e; font-style: italic; }  /* Documentation */
.sourceCode .ot { color: #f8f8f2; }                      /* Other */
.sourceCode .re { color: #ae81ff; }                      /* Region Marker */
.sourceCode .ex { color: #a6e22e; }                      /* Extension */

/* Line numbers */
.sourceCode .ln { color: #6e7681; }

/* Chroma/Hugo-style highlighting */
.highlight {
    margin: var(--spacing-xl) 0;
}

.highlight pre,
.chroma {
    margin: 0;
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow-x: auto;
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.chroma .k { color: #f92672; font-weight: bold; }
.chroma .kd { color: #f92672; font-weight: bold; }
.chroma .kn { color: #f92672; font-weight: bold; }
.chroma .kp { color: #f92672; }
.chroma .kr { color: #f92672; font-weight: bold; }
.chroma .kt { color: #66d9ef; }
.chroma .n { color: #f8f8f2; }
.chroma .na { color: #a6e22e; }
.chroma .nb { color: #66d9ef; }
.chroma .nc { color: #a6e22e; }
.chroma .nf { color: #a6e22e; }
.chroma .no { color: #66d9ef; }
.chroma .nv { color: #fd971f; }
.chroma .o { color: #f92672; }
.chroma .p { color: #f8f8f2; }
.chroma .s { color: #e6db74; }
.chroma .s1 { color: #e6db74; }
.chroma .s2 { color: #e6db74; }
.chroma .sa { color: #e6db74; }
.chroma .sc { color: #e6db74; }
.chroma .se { color: #ae81ff; }
.chroma .si { color: #e6db74; }
.chroma .sr { color: #e6db74; }
.chroma .ss { color: #e6db74; }
.chroma .sx { color: #e6db74; }
.chroma .c { color: #75715e; font-style: italic; }
.chroma .c1 { color: #75715e; font-style: italic; }
.chroma .cm { color: #75715e; font-style: italic; }
.chroma .cp { color: #75715e; }
.chroma .cs { color: #75715e; font-weight: bold; font-style: italic; }
.chroma .m { color: #ae81ff; }
.chroma .mb { color: #ae81ff; }
.chroma .mf { color: #ae81ff; }
.chroma .mh { color: #ae81ff; }
.chroma .mi { color: #ae81ff; }
.chroma .mo { color: #ae81ff; }
.chroma .ow { color: #f92672; font-weight: bold; }
.chroma .w { color: #f8f8f0; }
.chroma .err { color: #f92672; }

/* R-specific spans from hugodown */
code span.k, code span.kw { color: #f92672; font-weight: bold; }
code span.nf { color: #a6e22e; }
code span.o { color: #f92672; }
code span.m { color: #ae81ff; }
code span.s { color: #e6db74; }
code span.c { color: #75715e; font-style: italic; }

/* -----------------------------------------------------------------------------
   Post Navigation
   ----------------------------------------------------------------------------- */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.nav-prev,
.nav-next {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

.nav-prev:hover,
.nav-next:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-hover);
}

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

.nav-prev.disabled,
.nav-next.disabled {
    visibility: hidden;
}

.nav-label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.nav-title {
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
}

/* -----------------------------------------------------------------------------
   Footer
   ----------------------------------------------------------------------------- */
.site-footer {
    margin-left: var(--sidebar-width);
    padding: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    background: var(--color-bg-secondary);
}

.site-footer p {
    margin-bottom: var(--spacing-xs);
}

.site-footer p:last-of-type {
    margin-bottom: 0;
}

/* -----------------------------------------------------------------------------
   404 Error Page
   ----------------------------------------------------------------------------- */
.error-page {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.error-page h1 {
    font-size: 8rem;
    font-weight: 900;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 40px rgba(88, 166, 255, 0.3);
}

.error-page p {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.back-home {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.back-home:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

/* -----------------------------------------------------------------------------
   Mobile Responsive Styles
   ----------------------------------------------------------------------------- */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }
    
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        padding: var(--spacing-lg);
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
    
    .sidebar-content {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .profile-image {
        width: 80px;
        height: 80px;
        margin-bottom: 0;
    }
    
    .author-name {
        font-size: var(--font-size-lg);
        width: 100%;
        margin-bottom: 0;
    }
    
    .author-description {
        font-size: var(--font-size-xs);
        margin-bottom: 0;
        width: 100%;
    }
    
    .social-links {
        flex-direction: row;
        gap: var(--spacing-sm);
    }
    
    .social-links a {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--spacing-lg);
    }
    
    .site-footer {
        margin-left: 0;
    }
    
    .page-header h1 {
        font-size: var(--font-size-2xl);
    }
    
    .post-card {
        flex-direction: column !important;
        flex-wrap: wrap !important;
    }
    
    .post-link {
        flex-direction: column !important;
        align-items: stretch !important;
        flex-wrap: wrap !important;
        width: 100% !important;
    }
    
    .post-thumbnail {
        width: 100% !important;
        height: var(--thumbnail-height, 150px) !important;
        min-height: var(--thumbnail-height, 150px) !important;
        max-width: 100% !important;
        min-width: 100% !important;
        overflow: hidden;
        position: relative;
        display: block !important;
        align-self: stretch !important;
        flex-shrink: 0 !important;
        flex-grow: 0 !important;
        flex-basis: auto !important;
        order: 1 !important;
    }
    
    .post-thumbnail img {
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
        object-position: center !important;
        display: block !important;
        flex: none !important;
    }
    
    .post-content {
        width: 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        flex: 1 1 100% !important;
        order: 2 !important;
        padding: var(--spacing-md) !important;
    }
    
    .post-header .post-title {
        font-size: var(--font-size-2xl);
    }
    
    .post-body {
        font-size: var(--font-size-base);
    }
    
    .post-navigation {
        grid-template-columns: 1fr;
    }
    
    .nav-next {
        text-align: left;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .pagination-numbers {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
    
    .error-page h1 {
        font-size: 5rem;
    }
}

@media (max-width: 480px) {
    .post-content {
        padding: var(--spacing-md);
    }
    
    .post-title {
        font-size: var(--font-size-lg);
    }
    
    .post-body pre {
        padding: var(--spacing-md);
        font-size: var(--font-size-xs);
        border-radius: 0;
        margin-left: calc(-1 * var(--spacing-lg));
        margin-right: calc(-1 * var(--spacing-lg));
    }
}

/* -----------------------------------------------------------------------------
   Print Styles
   ----------------------------------------------------------------------------- */
@media print {
    .sidebar,
    .social-links,
    .post-navigation,
    .pagination,
    .taxonomies,
    .site-footer {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        padding: 0;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .post-body {
        font-size: 12pt;
    }
    
    .post-body a {
        color: black;
        text-decoration: underline;
    }
    
    .post-body code,
    .post-body pre {
        background: #f5f5f5;
        border: 1px solid #ddd;
    }
}

/* -----------------------------------------------------------------------------
   Accessibility
   ----------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    padding: var(--spacing-md);
    background: var(--color-accent);
    color: var(--color-bg-primary);
    z-index: 1000;
}

.skip-link:focus {
    top: 0;
}