:root {
    /* Tech-inspired color palette */
    /* Light mode colors */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-text-primary: #0f172a;
    --color-text-secondary: #64748b;
    --color-text-tertiary: #94a3b8;
    --color-border: #e2e8f0;
    --color-accent-primary: #0ea5e9; /* cyan-500 */
    --color-accent-secondary: #0284c7; /* cyan-600 */
    --color-accent-highlight: #22d3ee; /* cyan-400 */

    /* Dark mode colors */
    --color-dark-bg-primary: #0f172a;
    --color-dark-bg-secondary: #1e293b;
    --color-dark-bg-tertiary: #334155;
    --color-dark-text-primary: #f1f5f9;
    --color-dark-text-secondary: #cbd5e1;
    --color-dark-text-tertiary: #94a3b8;
    --color-dark-border: #475569;
    --color-dark-accent-primary: #0ea5e9; /* cyan-500 */
    --color-dark-accent-secondary: #38bdf8; /* cyan-300 */
    --color-dark-accent-highlight: #22d3ee; /* cyan-400 */

    /* Component-specific colors */
    --color-card-bg: var(--color-bg-secondary);
    --color-card-border: var(--color-border);
    --color-button-bg: var(--color-accent-primary);
    --color-button-text: white;
    --color-button-hover: var(--color-accent-secondary);

    /* Spacing variables */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Animations */
    --animation-duration-short: 0.3s;
    --animation-duration-medium: 0.6s;
    --animation-duration-long: 1s;
    --animation-easing: cubic-bezier(0.4, 0, 0.2, 1);

    /* Font sizes */
    --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;

    /* Grid layout */
    --container-max-width: 1200px;
    --grid-gap: var(--spacing-md);

    /* Responsive breakpoints */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;

    /* Font families */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'Fira Code', 'Monaco', 'Inconsolata', 'Fira Mono', monospace;

    /* Typographic settings */
    --line-height-base: 1.6;
    --line-height-heading: 1.2;
    --line-height-code: 1.4;
    --letter-spacing-headings: -0.015em;
    --letter-spacing-body: 0.001em;
    --letter-spacing-caps: 0.02em;
}

/* Base dark mode using media query as fallback */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-primary: var(--color-dark-bg-primary);
        --color-bg-secondary: var(--color-dark-bg-secondary);
        --color-bg-tertiary: var(--color-dark-bg-tertiary);
        --color-text-primary: var(--color-dark-text-primary);
        --color-text-secondary: var(--color-dark-text-secondary);
        --color-text-tertiary: var(--color-dark-text-tertiary);
        --color-border: var(--color-dark-border);
        --color-accent-primary: var(--color-dark-accent-primary);
        --color-accent-secondary: var(--color-dark-accent-secondary);
        --color-accent-highlight: var(--color-dark-accent-highlight);
        --color-card-bg: var(--color-bg-secondary);
        --color-card-border: var(--color-border);
        --color-button-bg: var(--color-accent-primary);
        --color-button-text: var(--color-text-primary);
        --color-button-hover: var(--color-accent-secondary);
    }
}

/* Explicit dark mode when set by JavaScript */
[data-theme="dark"] {
    --color-bg-primary: var(--color-dark-bg-primary);
    --color-bg-secondary: var(--color-dark-bg-secondary);
    --color-bg-tertiary: var(--color-dark-bg-tertiary);
    --color-text-primary: var(--color-dark-text-primary);
    --color-text-secondary: var(--color-dark-text-secondary);
    --color-text-tertiary: var(--color-dark-text-tertiary);
    --color-border: var(--color-dark-border);
    --color-accent-primary: var(--color-dark-accent-primary);
    --color-accent-secondary: var(--color-dark-accent-secondary);
    --color-accent-highlight: var(--color-dark-accent-highlight);
    --color-card-bg: var(--color-bg-secondary);
    --color-card-border: var(--color-border);
    --color-button-bg: var(--color-accent-primary);
    --color-button-text: var(--color-text-primary);
    --color-button-hover: var(--color-accent-secondary);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.fade-in {
    animation: fadeIn var(--animation-duration-medium) var(--animation-easing) forwards;
}

.slide-up {
    animation: slideUp var(--animation-duration-medium) var(--animation-easing) forwards;
}

.fade-in-scale {
    animation: fadeInScale var(--animation-duration-medium) var(--animation-easing) forwards;
}

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

/* Search interface styles */
.search-section {
    max-width: 700px;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.search-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.search-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 2px solid var(--color-border);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
    background-color: var(--color-bg-primary);
}

.search-input-container {
    display: flex;
    align-items: stretch;
    position: relative;
}

.search-input {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-xl);
    border: none;
    outline: none;
    font-size: var(--font-size-lg);
    font-family: var(--font-body);
    background-color: transparent;
    color: var(--color-text-primary);
    min-height: 60px;
}

.search-input::placeholder {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-base);
}

.search-options {
    display: flex;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
}

.radio-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    height: 100%;
    border-right: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.radio-option:last-child {
    border-right: none;
}

.radio-option:hover {
    background-color: var(--color-bg-tertiary);
}

.radio-option input[type="radio"] {
    margin-right: var(--spacing-xs);
    cursor: pointer;
}

.radio-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
}

.radio-option input[type="radio"]:checked + .radio-text {
    color: var(--color-accent-primary);
    font-weight: 600;
}

.search-button {
    padding: var(--spacing-lg);
    background: var(--color-accent-primary);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: auto;
}

.search-button:hover {
    background: var(--color-accent-secondary);
}

.search-icon {
    width: 24px;
    height: 24px;
    color: white;
}

.search-results {
    margin-top: var(--spacing-lg);
    min-height: 200px;
}

.search-suggestions {
    margin-top: var(--spacing-sm);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    display: none;
    max-height: 200px;
    overflow-y: auto;
}

.search-suggestions.show {
    display: block;
}

.suggestion-item {
    padding: var(--spacing-sm);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.suggestion-item:hover {
    background-color: var(--color-bg-tertiary);
}

.search-result-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-fast);
}

.search-result-item:hover {
    background-color: var(--color-bg-tertiary);
    transform: translateX(5px);
}

.search-result-title {
    font-weight: 600;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-xs);
}

.search-result-excerpt {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.no-results {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-tertiary);
    font-style: italic;
}

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

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: var(--line-height-base);
    letter-spacing: var(--letter-spacing-body);
    margin: 0;
    padding: 0;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Container layout */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Grid/Flexbox layout for the page structure */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-header {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.page-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-main {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: 80ch;
    margin: 0 auto;
    width: 100%;
}

.page-footer {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
    border-top: 1px solid var(--color-accent-primary);
    position: relative;
    overflow: hidden;
}

.page-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent-primary), transparent);
}

.page-footer p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    letter-spacing: var(--letter-spacing-caps);
    text-transform: uppercase;
}

/* Navigation links */
.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--color-accent-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: var(--letter-spacing-body);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent-secondary);
    transition: width var(--transition-fast), left var(--transition-fast);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--color-accent-secondary);
    background-color: var(--color-bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.nav-link:hover::before {
    width: 80%;
}

.nav-link:active {
    transform: translateY(0);
}

/* Grid for article listings */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--grid-gap);
    margin: var(--spacing-lg) 0;
}

/* Layout for home page with sidebar */
.home-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin: 0 auto;
    max-width: var(--container-max-width);
}

.home-main {
    min-width: 0; /* Prevent grid items from overflowing */
}

.sidebar {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    align-self: start; /* Align to top of grid */
}

.sidebar-widget {
    margin-bottom: var(--spacing-xl);
}

.sidebar-widget h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-primary);
    font-size: var(--font-size-lg);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
}

.sidebar-widget .article-count {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-accent-primary);
    margin: 0;
}

.sidebar-widget .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.sidebar-widget .tag {
    background-color: var(--color-bg-tertiary);
    padding: calc(var(--spacing-xs) * 0.5) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: var(--letter-spacing-body);
}

.sidebar-widget .last-update {
    font-style: italic;
    color: var(--color-text-secondary);
    margin: 0;
}

.article-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    box-shadow: var(--shadow-sm);
    animation: slideUp var(--animation-duration-medium) var(--animation-easing) forwards;
    opacity: 0;
}

.article-card:nth-child(1) { animation-delay: 0.1s; }
.article-card:nth-child(2) { animation-delay: 0.2s; }
.article-card:nth-child(3) { animation-delay: 0.3s; }
.article-card:nth-child(4) { animation-delay: 0.4s; }
.article-card:nth-child(5) { animation-delay: 0.5s; }
.article-card:nth-child(6) { animation-delay: 0.6s; }

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent-primary);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    margin-top: 0;
    line-height: var(--line-height-heading);
    letter-spacing: var(--letter-spacing-headings);
    font-family: var(--font-heading);
    font-weight: 700;
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-lg);
}

h5 {
    font-size: var(--font-size-base);
}

h6 {
    font-size: var(--font-size-sm);
}

p {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    letter-spacing: var(--letter-spacing-body);
}

a {
    color: var(--color-accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
    font-family: var(--font-body);
    letter-spacing: var(--letter-spacing-body);
    position: relative;
    padding: 0.125em 0;
    border-radius: var(--radius-sm);
}

a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent-secondary);
    transition: width var(--transition-fast);
}

a:hover {
    color: var(--color-accent-secondary);
    text-decoration: none;
    background-color: var(--color-bg-tertiary);
    transform: translateY(-1px);
}

a:hover::before {
    width: 100%;
}

.theme-toggle-container {
    display: inline-block;
}

.theme-toggle-btn {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    transition: background-color var(--transition-normal), border-color var(--transition-normal), transform var(--transition-fast);
    position: relative;
}

.theme-toggle-btn:hover {
    background: var(--color-bg-secondary);
    transform: scale(1.05);
}

.theme-toggle-btn:focus {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

.sun-icon, .moon-icon {
    position: absolute;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.sun-icon {
    opacity: 1;
}

.moon-icon {
    opacity: 0;
}

/* Dark theme icon states */
[data-theme="dark"] .sun-icon {
    opacity: 0;
}

[data-theme="dark"] .moon-icon {
    opacity: 1;
}

.tag {
    background-color: var(--color-bg-tertiary);
    padding: calc(var(--spacing-xs) * 0.5) var(--spacing-sm);
    border-radius: var(--radius-lg);
    margin-right: var(--spacing-sm);
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: var(--letter-spacing-body);
}

/* Articles filters styling */
.articles-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    min-width: 180px;
}

.filter-group label {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 0.9rem;
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    min-width: 150px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
    cursor: pointer;
    height: 40px;
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2); /* Cyan-500 with opacity */
}

.filter-select:hover {
    border-color: var(--color-accent-primary);
    background-color: var(--color-bg-tertiary);
}

.filter-select:active {
    background-color: var(--color-bg-tertiary);
}

.article-list {
    display: grid;
    gap: var(--spacing-lg);
}

.no-results {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* Filter chips for active filters */
.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-accent-primary);
    color: white;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.filter-chip:hover {
    background-color: var(--color-accent-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.filter-chip .remove-filter {
    cursor: pointer;
    font-weight: bold;
    margin-left: var(--spacing-xs);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    line-height: 1;
}

.filter-chip .remove-filter:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.3);
}

.internal-link {
    color: var(--color-accent-primary);
    text-decoration: none;
    padding: 0.125em 0.25em;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    font-family: var(--font-body);
    letter-spacing: var(--letter-spacing-body);
    position: relative;
    overflow: hidden;
}

.internal-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    background: var(--color-accent-secondary);
    transition: width var(--transition-fast), left var(--transition-fast);
    transform: translateX(-50%);
}

.internal-link:hover {
    color: var(--color-accent-secondary);
    background-color: var(--color-bg-tertiary);
    transform: translateY(-1px);
}

.internal-link:hover::before {
    width: 100%;
}

/* Code elements */
code {
    font-family: var(--font-mono);
    background-color: var(--color-bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    line-height: var(--line-height-code);
    letter-spacing: var(--letter-spacing-body);
}

pre {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    line-height: var(--line-height-code);
}

pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    font-size: var(--font-size-sm);
}

blockquote {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid var(--color-accent-primary);
    background-color: var(--color-bg-secondary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    line-height: var(--line-height-base);
    letter-spacing: var(--letter-spacing-body);
}

ul, ol {
    padding-left: var(--spacing-xl);
    margin: var(--spacing-md) 0;
    line-height: var(--line-height-base);
}

li {
    margin-bottom: var(--spacing-xs);
    letter-spacing: var(--letter-spacing-body);
}

/* Responsive adjustments for readability */
/* Small devices (landscape phones, 576px and up) */
@media (min-width: var(--breakpoint-sm)) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .page-nav {
        flex-direction: row;
        justify-content: space-between;
    }

    .nav-links {
        gap: var(--spacing-md);
    }

    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }

    /* On small screens, keep sidebar below main content */
    .home-layout {
        grid-template-columns: 1fr;
    }

    /* Increase line height slightly for better readability on medium screens */
    p, li, h1, h2, h3, h4, h5, h6 {
        line-height: calc(var(--line-height-base) * 1.05);
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: var(--breakpoint-md)) {
    .articles-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }

    .page-header,
    .page-main,
    .page-footer {
        padding-left: var(--spacing-xl);
        padding-right: var(--spacing-xl);
    }

    .nav-links {
        gap: var(--spacing-lg);
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }

    /* Home page sidebar layout */
    .home-layout {
        grid-template-columns: 1fr 300px; /* Main content, sidebar */
    }

    .sidebar {
        height: fit-content;
    }

    /* Optimize typography for tablets */
    body {
        font-size: 1.05rem;
    }

    p, li {
        line-height: calc(var(--line-height-base) * 1.1);
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: var(--breakpoint-lg)) {
    .articles-grid {
        grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    }

    .page-nav {
        gap: var(--spacing-xl);
    }

    /* Enhance sidebar layout for larger screens */
    .home-layout {
        grid-template-columns: 1fr 320px; /* Main content, sidebar */
    }

    /* Further optimize for larger screens */
    body {
        font-size: 1.1rem;
        line-height: calc(var(--line-height-base) * 1.15);
    }

    p, li {
        line-height: calc(var(--line-height-base) * 1.2);
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: var(--breakpoint-xl)) {
    .container {
        max-width: var(--container-max-width);
        padding: 0 var(--spacing-2xl);
    }

    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Optimize sidebar for extra large screens */
    .home-layout {
        grid-template-columns: 1fr 350px; /* Main content, sidebar */
    }

    h1 { font-size: 3rem; }
    h2 { font-size: 2.5rem; }

    /* Typography adjustments for large screens */
    h1, h2, h3 {
        line-height: calc(var(--line-height-heading) * 0.95);
    }
}

/* Extra small devices (portrait phones, less than 576px) */
@media (max-width: calc(var(--breakpoint-sm) - 1px)) {
    .page-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .nav-links {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .articles-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    /* Stack sidebar below main content on extra small screens */
    .home-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .page-header,
    .page-main,
    .page-footer {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }

    h1 { font-size: var(--font-size-2xl); }
    h2 { font-size: var(--font-size-xl); }
    h3 { font-size: var(--font-size-lg); }

    /* Adjust for better readability on small screens */
    body {
        font-size: 0.95rem;
    }

    p, li {
        line-height: var(--line-height-base);
    }
}