/* 
 * Thoughtful Theme for BSSG
 * A warm, accessible, and performant theme
 * for personal reflection blogs and thoughtful writing
 * 
 * DESIGN PHILOSOPHY:
 * - Warm, natural color palette that invites contemplation
 * - Typography that balances elegance with personality
 * - Rhythm and flow that supports narrative reading
 * - Subtle visual elements that enhance without distraction
 * - Full accessibility compliance with graceful degradation
 * - Optimized performance for all devices
 */

:root {
    /* Color palette - Warm and contemplative with WCAG AA+ contrast */
    --primary-bg: #faf8f3;
    --secondary-bg: #f2efe7;
    --surface-bg: #ffffff;
    --accent-bg: #e8e2d4;
    
    /* Text colors - High contrast for accessibility */
    --text-primary: #2c2620;
    --text-secondary: #3d3730;
    --text-tertiary: #4f4940;
    --text-muted: #6b635a;
    
    /* Accent colors - WCAG AA compliant */
    --accent-primary: #8b4513;
    --accent-secondary: #b8651e;
    --link-color: #1a4480;
    --link-hover: #0f2c5c;
    --link-visited: #4a2c5a;
    
    /* Semantic colors */
    --border-light: #e0d7c5;
    --border-medium: #c9baa5;
    --border-dark: #a69780;
    --shadow-light: rgba(45, 41, 38, 0.08);
    --shadow-medium: rgba(45, 41, 38, 0.12);
    --highlight: rgba(139, 69, 19, 0.08);
    
    /* Typography - Text browser friendly */
    --font-primary: Georgia, 'Times New Roman', 'Liberation Serif', serif;
    --font-secondary: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Liberation Sans', Arial, sans-serif;
    --font-mono: 'Liberation Mono', 'Courier New', Courier, monospace;
    
    /* Typography scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Spacing system - Rhythmic and harmonious */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Layout */
    --content-width: min(65ch, 90vw);
    --wide-content-width: min(75ch, 95vw);
    --narrow-content-width: min(45ch, 85vw);
    
    /* Design tokens */
    --line-height-tight: 1.25;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.75;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    
    /* Performance-optimized transitions */
    --transition-fast: 150ms ease-out;
    --transition-normal: 200ms ease-out;
    --transition-slow: 300ms ease-out;
}

/* Dark theme variant - WCAG AA+ compliant */
.theme-dark {
    --primary-bg: #1a1814;
    --secondary-bg: #242019;
    --surface-bg: #2d2926;
    --accent-bg: #3a3530;
    
    /* High contrast text for accessibility */
    --text-primary: #f5f2eb;
    --text-secondary: #e0dcd5;
    --text-tertiary: #cac5be;
    --text-muted: #b4afa8;
    
    --accent-primary: #d2813f;
    --accent-secondary: #e6a85c;
    --link-color: #7eb3ff;
    --link-hover: #a8c7ff;
    --link-visited: #c4a3e8;
    
    --border-light: #3a3530;
    --border-medium: #4a453f;
    --border-dark: #5a534c;
    --shadow-light: rgba(0, 0, 0, 0.2);
    --shadow-medium: rgba(0, 0, 0, 0.3);
    --highlight: rgba(210, 129, 63, 0.12);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
        transform: none !important;
    }
}

/* Base styles */
* {
    box-sizing: border-box;
}

html {
    font-size: clamp(18px, 2.5vw, 22px);
    scroll-behavior: smooth;
    scroll-padding-top: var(--space-8);
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--primary-bg);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Removed expensive background effects for better performance */
    min-height: 100vh;
}

/* Container and layout */
.container {
    width: var(--content-width);
    margin: 0 auto;
    padding: var(--space-6) var(--space-4) var(--space-16);
    position: relative;
}

/* Header */
header {
    margin-bottom: var(--space-16);
    text-align: center;
    position: relative;
}

header::after {
    content: '';
    position: absolute;
    bottom: calc(-1 * var(--space-8));
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    border-radius: 1px;
}

.site-title {
    font-family: var(--font-primary);
    font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
    font-weight: 400;
    margin: 0 0 var(--space-4);
    letter-spacing: -0.02em;
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    position: relative;
}

.site-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-normal);
    position: relative;
    display: inline-block;
}

.site-title a::before {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-normal);
}

.site-title a:hover {
    color: var(--accent-primary);
}

.site-title a:hover::before {
    width: 100%;
}

.site-title a:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 4px;
    border-radius: var(--border-radius-sm);
}

header p {
    font-family: var(--font-secondary);
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--text-secondary);
    margin: 0;
    max-width: var(--narrow-content-width);
    margin-left: auto;
    margin-right: auto;
    line-height: var(--line-height-relaxed);
}

/* Navigation */
nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-top: var(--space-8);
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

nav a {
    color: var(--text-tertiary);
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--highlight);
    transition: left var(--transition-normal);
    z-index: -1;
}

nav a:hover {
    color: var(--accent-primary);
    transform: translateY(-1px);
}

nav a:hover::before {
    left: 0;
}

nav a.active {
    color: var(--accent-primary);
    background: var(--highlight);
}

nav a:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

/* Main content */
main {
    min-height: 60vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
    margin: 0 0 var(--space-6);
    font-weight: 400;
    letter-spacing: -0.015em;
}

h1 {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
    margin-bottom: var(--space-8);
    text-align: center;
    position: relative;
    padding-bottom: var(--space-6);
}

h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--accent-secondary);
    border-radius: 1px;
}

h2 {
    font-size: var(--text-2xl);
    margin-top: var(--space-16);
    margin-bottom: var(--space-6);
    color: var(--accent-primary);
    position: relative;
    padding-left: var(--space-4);
}

h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--accent-secondary);
    border-radius: 2px;
}

h3 {
    font-size: var(--text-xl);
    margin-top: var(--space-12);
    color: var(--text-primary);
}

h4 {
    font-size: var(--text-lg);
    margin-top: var(--space-10);
    font-style: italic;
    color: var(--text-secondary);
}

p {
    margin: 0 0 var(--space-6);
    line-height: var(--line-height-relaxed);
    hyphens: auto;
    hanging-punctuation: first last;
}

/* First paragraph enhancement */
article .article-content > p:first-of-type {
    font-size: var(--text-lg);
    line-height: var(--line-height-normal);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

article .article-content > p:first-of-type::first-letter {
    float: left;
    font-size: 4rem;
    line-height: 0.8;
    margin: 0.1em 0.1em 0 0;
    color: var(--accent-primary);
    font-weight: 400;
    text-shadow: 2px 2px 4px var(--shadow-light);
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
    transition: all var(--transition-normal);
}

a:hover {
    color: var(--link-hover);
    text-decoration-thickness: 2px;
}

a:visited {
    color: var(--link-visited);
}

a:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* Lists */
ul, ol {
    margin: var(--space-6) 0 var(--space-8);
    padding-left: var(--space-8);
}

li {
    margin-bottom: var(--space-3);
    line-height: var(--line-height-relaxed);
}

li::marker {
    color: var(--accent-secondary);
}

/* Blockquotes */
blockquote {
    margin: var(--space-12) 0;
    padding: var(--space-8) var(--space-10);
    background: linear-gradient(135deg, var(--secondary-bg), var(--accent-bg));
    border-left: 4px solid var(--accent-primary);
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    font-style: italic;
    font-size: var(--text-lg);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    box-shadow: 0 4px 6px var(--shadow-light);
    position: relative;
}

blockquote::before {
    content: '"';
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    font-size: 3rem;
    color: var(--accent-primary);
    opacity: 0.3;
    line-height: 1;
}

blockquote p:first-child {
    margin-top: 0;
}

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

blockquote cite {
    display: block;
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-muted);
    text-align: right;
    font-style: normal;
}

blockquote cite::before {
    content: '— ';
}

/* Code blocks */
pre, code {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    border-radius: var(--border-radius-sm);
}

code {
    background: var(--accent-bg);
    padding: 0.2em 0.4em;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

pre {
    background: var(--secondary-bg);
    padding: var(--space-6);
    margin: var(--space-8) 0;
    overflow-x: auto;
    line-height: var(--line-height-normal);
    border: 1px solid var(--border-medium);
    box-shadow: inset 0 2px 4px var(--shadow-light);
}

pre code {
    background: none;
    padding: 0;
    border: none;
}

/* Horizontal rule */
hr {
    border: none;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    margin: var(--space-16) auto;
    width: 60%;
    border-radius: 1px;
}

/* Article layout */
article {
    margin-bottom: var(--space-24);
}

article h1 {
    margin-bottom: var(--space-4);
}

/* Article meta */
.meta, .page-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-muted);
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    margin: var(--space-4) 0 var(--space-16);
    text-align: center;
    line-height: var(--line-height-normal);
}

.meta > * {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.meta > *:not(:last-child)::after {
    content: '•';
    margin: 0 var(--space-3);
    color: var(--accent-secondary);
    font-weight: bold;
}

/* Reading time - TEXT BROWSER FALLBACK */
.reading-time {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

/* Fallback for text browsers - shows "Reading time:" before emoji */
.reading-time::before {
    content: 'Reading time: ⏱';
    font-style: normal;
    color: var(--accent-secondary);
}

/* Hide fallback text when CSS transforms are supported (modern browsers) */
@supports (transform: translateX(0)) {
    .reading-time::before {
        content: '⏱';
        font-style: normal;
        color: var(--accent-secondary);
    }
}

/* TEXT BROWSER FALLBACK: Ensure content is readable without CSS */
@media (max-width: 0) {
    .reading-time::before {
        content: 'Reading time: ';
        font-style: normal;
    }
}

/* ACCESSIBILITY: Enhanced for screen readers */
.reading-time[aria-label]::before {
    content: '⏱';
}

/* Tags */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    justify-content: center;
    margin-top: var(--space-6);
}

.tags a {
    background: var(--accent-bg);
    color: var(--text-tertiary);
    text-decoration: none;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius-lg);
    font-size: var(--text-xs);
    font-family: var(--font-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
}

.tags a:hover {
    background: var(--accent-primary);
    color: var(--surface-bg);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px var(--shadow-medium);
}

.tags a:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 6px var(--shadow-light);
}

.featured-image, .index-image, .tag-image, .archive-image {
    margin: var(--space-12) auto;
    text-align: center;
}

figcaption {
    font-size: var(--text-sm);
    font-style: italic;
    color: var(--text-muted);
    text-align: center;
    margin-top: var(--space-4);
    font-family: var(--font-secondary);
}

/* Pull quotes */
.pull-quote {
    font-family: var(--font-primary);
    font-size: var(--text-2xl);
    line-height: var(--line-height-normal);
    font-style: italic;
    color: var(--accent-primary);
    text-align: center;
    margin: var(--space-16) auto;
    padding: var(--space-8) var(--space-6);
    max-width: var(--narrow-content-width);
    position: relative;
    background: linear-gradient(135deg, var(--highlight), transparent);
    border-radius: var(--border-radius-lg);
}

.pull-quote::before,
.pull-quote::after {
    content: '"';
    font-size: 4rem;
    position: absolute;
    color: var(--accent-secondary);
    opacity: 0.3;
    line-height: 1;
}

.pull-quote::before {
    top: 0;
    left: var(--space-4);
}

.pull-quote::after {
    bottom: 0;
    right: var(--space-4);
}

/* Post list */
.posts-list {
    margin-top: var(--space-16);
}

.posts-list article {
    margin-bottom: var(--space-16);
    padding: var(--space-10) var(--space-8) var(--space-8);
    background: var(--surface-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 2px 4px var(--shadow-light);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.posts-list article::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.posts-list article:hover {
    /* Use opacity and scale instead of transform for better performance */
    box-shadow: 0 8px 16px var(--shadow-medium);
}

.posts-list article:last-child {
    border-bottom: 1px solid var(--border-light);
}

.posts-list h3 {
    margin: 0 0 var(--space-6);
    font-size: var(--text-2xl);
    text-align: center;
    line-height: var(--line-height-tight);
}

.posts-list h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-normal);
    display: block;
}

.posts-list h3 a:hover {
    color: var(--accent-primary);
}

.posts-list h3 a:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

.posts-list .meta {
    margin: var(--space-4) 0 var(--space-8);
}

.posts-list .featured-image,
.posts-list .index-image {
    margin: var(--space-8) 0;
}

.posts-list p {
    text-align: left;
    margin-top: var(--space-8);
    font-size: var(--text-lg);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
}

/* Footer */
footer {
    margin-top: var(--space-24);
    padding: var(--space-12) 0 var(--space-8);
    text-align: center;
    border-top: 1px solid var(--border-medium);
    background: linear-gradient(135deg, var(--secondary-bg), var(--accent-bg));
    color: var(--text-muted);
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
}

footer p {
    margin: var(--space-2) 0;
}

footer a {
    color: var(--text-secondary);
    transition: color var(--transition-normal);
}

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

footer a:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: var(--space-16) 0 var(--space-12);
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    gap: var(--space-4);
}

.pagination a {
    background: var(--surface-bg);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-medium);
    transition: all var(--transition-normal);
    box-shadow: 0 2px 4px var(--shadow-light);
}

.pagination a:hover {
    background: var(--accent-primary);
    color: var(--surface-bg);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px var(--shadow-medium);
}

.pagination a:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

.page-info {
    color: var(--text-muted);
    font-style: italic;
}

/* Theme toggle */
.theme-toggle {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    display: flex;
    gap: var(--space-2);
    z-index: 1000;
    background: var(--surface-bg);
    padding: var(--space-2);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 6px var(--shadow-medium);
    border: 1px solid var(--border-light);
}

.theme-toggle button {
    background: none;
    border: 1px solid var(--border-medium);
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    color: var(--text-muted);
    font-family: var(--font-secondary);
    font-size: var(--text-xs);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.theme-toggle button:hover {
    background: var(--highlight);
    color: var(--text-primary);
}

.theme-toggle button.active {
    background: var(--accent-primary);
    color: var(--surface-bg);
    border-color: var(--accent-primary);
}

.theme-toggle button:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

/* Responsive design */
@media (max-width: 768px) {
    :root {
        --content-width: min(90vw, 100%);
    }
    
    .container {
        padding: var(--space-4) var(--space-3) var(--space-12);
    }
    
    header::after {
        bottom: calc(-1 * var(--space-6));
    }
    
    h1::after {
        width: 30px;
    }
    
    h2 {
        margin-top: var(--space-12);
        padding-left: var(--space-3);
    }
    
    .meta, .page-meta {
        flex-direction: column;
        gap: var(--space-1);
        text-align: center;
    }
    
    .meta > *:not(:last-child)::after {
        content: '';
        margin: 0;
    }
    
    blockquote {
        padding: var(--space-6);
        margin: var(--space-8) 0;
    }
    
    .pull-quote {
        font-size: var(--text-xl);
        padding: var(--space-6) var(--space-4);
        margin: var(--space-12) auto;
    }
    
    nav {
        gap: var(--space-4);
        margin-top: var(--space-6);
    }
    
    .theme-toggle {
        top: var(--space-2);
        right: var(--space-2);
        font-size: var(--text-xs);
    }
    
    .posts-list article {
        padding: var(--space-6);
        margin-bottom: var(--space-12);
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--space-3) var(--space-2) var(--space-10);
    }
    
    nav {
        gap: var(--space-3);
        font-size: var(--text-xs);
    }
    
    nav a {
        padding: var(--space-1) var(--space-2);
    }
    
    .pagination {
        flex-direction: column;
        gap: var(--space-3);
    }
}

/* Print styles */
@media print {
    :root {
        --primary-bg: #ffffff;
        --text-primary: #000000;
        --text-secondary: #333333;
        --text-tertiary: #666666;
        --text-muted: #999999;
        --accent-primary: #000000;
        --link-color: #000000;
    }
    
    body {
        background: none;
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .container {
        width: 100%;
        max-width: none;
        padding: 0;
        margin: 0;
    }
    
    .theme-toggle, nav {
        display: none;
    }
    
    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
        page-break-inside: avoid;
    }
    
    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
    
    blockquote, pre {
        page-break-inside: avoid;
        border: 1px solid #ccc;
        background: #f9f9f9 !important;
    }
    
    p, h2, h3 {
        orphans: 3;
        widows: 3;
    }
}

/* Accessibility enhancements */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #1a1a1a;
        --link-color: #0000ff;
        --link-hover: #000080;
        --accent-primary: #8b0000;
        --border-medium: #666666;
        --shadow-light: rgba(0, 0, 0, 0.5);
        --shadow-medium: rgba(0, 0, 0, 0.7);
    }
}

/* NO JAVASCRIPT CLASS: Better graceful degradation */
.no-js .posts-list article {
    /* Remove hover effects if no JS */
    transition: none;
}

.no-js .site-title a::before,
.no-js nav a::before {
    /* Remove complex pseudo-element animations if no JS */
    display: none;
}

/* TEXT BROWSER SUPPORT: Ensure all content is accessible */
@media (max-device-width: 0) {
    /* This targets text browsers */
    .site-title::after,
    header::after,
    h1::after,
    h2::before,
    blockquote::before,
    .pull-quote::before,
    .pull-quote::after {
        display: none;
    }
    
    .theme-toggle {
        display: none;
    }
}

/* PERFORMANCE: Use GPU acceleration only when beneficial */
@media (min-width: 769px) {
    .posts-list article {
        will-change: box-shadow;
    }
}

/* Focus enhancements for keyboard navigation */
:focus-visible {
    outline: 3px solid var(--link-color);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* Skip to content link - ACCESSIBILITY ESSENTIAL */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--accent-primary);
    color: var(--surface-bg);
    padding: 8px 12px;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-secondary);
    font-size: var(--text-sm);
    font-weight: 600;
    z-index: 100;
    transition: top var(--transition-fast);
}

.skip-to-content:focus {
    top: 6px;
}

/* PRINT OPTIMIZATIONS: Better resource usage */
@media print {
    * {
        /* Remove all shadows and transitions for print */
        box-shadow: none !important;
        text-shadow: none !important;
        transition: none !important;
        animation: none !important;
    }
}