/* ===== BASE STYLES ===== */
:root {
    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    
    /* Color scheme - light mode defaults */
    --color-background: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #555555;
    --color-accent: #1a75ff;
    --color-accent-dark: #0056b3;
    --color-border: #ebebeb;
    --color-muted: #f5f5f5;
    --color-white: #ffffff;
    --color-overlay: rgba(0, 0, 0, 0.5);
    
    /* Category colors */
    --color-politics: #b71c1c;
    --color-business: #0d47a1;
    --color-technology: #006064;
    --color-science: #1b5e20;
    --color-health: #4a148c;
    --color-arts: #e65100;
    --color-sports: #bf360c;
    --color-environment: #7f7;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Container width */
    --container-width: 1200px;
    
    /* Animation speeds */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    /* Z-index layers */
    --z-lowest: -1;
    --z-low: 1;
    --z-mid: 10;
    --z-high: 100;
    --z-highest: 1000;
}

/* Dark mode color scheme */
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #121212;
        --color-text: #e0e0e0;
        --color-text-light: #a0a0a0;
        --color-accent: #4d9fff;
        --color-accent-dark: #75b5ff;
        --color-border: #2a2a2a;
        --color-muted: #1e1e1e;
        --color-overlay: rgba(0, 0, 0, 0.7);
    }
}

/* Support for manual theme switching */
[data-theme="dark"] {
    --color-background: #121212;
    --color-text: #e0e0e0;
    --color-text-light: #a0a0a0;
    --color-accent: #4d9fff;
    --color-accent-dark: #75b5ff;
    --color-border: #2a2a2a;
    --color-muted: #1e1e1e;
    --color-overlay: rgba(0, 0, 0, 0.7);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

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

a:hover, a:focus {
    color: var(--color-accent-dark);
    text-decoration: underline;
}

/* Button Reset */
button {
    border: none;
    background: none;
    font: inherit;
    cursor: pointer;
    padding: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-xl);
    font-size: 1.75rem;
    z-index: var(--z-low);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    z-index: var(--z-lowest);
    transition: width var(--transition-normal);
}

.section-title:hover::after {
    width: 100%;
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: var(--z-highest);
}

#theme-button {
    background-color: var(--color-muted);
    color: var(--color-text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), background-color var(--transition-normal);
}

#theme-button:hover {
    transform: scale(1.05);
    background-color: var(--color-border);
}

/* ===== BREAKING NEWS ===== */
.breaking-news-container {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: var(--spacing-sm) 0;
    overflow: hidden;
    position: relative;
}

.breaking-news {
    display: flex;
    align-items: center;
    animation: slide-in-right 0.5s ease-out;
}

.breaking-news-label {
    font-weight: 700;
    text-transform: uppercase;
    background-color: #ff3b30;
    padding: 0.1rem var(--spacing-sm);
    margin-right: var(--spacing-md);
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.breaking-news-content {
    font-weight: 500;
    animation: ticker 20s linear infinite;
    white-space: nowrap;
}

@keyframes slide-in-right {
    0% { transform: translateX(100%); }
    100% { transform: translateX(0); }
}

@keyframes ticker {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); }
}

/* ===== HEADER ===== */
.site-header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: var(--z-high);
    transition: transform var(--transition-normal);
}
.site-header.minimal {
    position: relative;
}

/* Header hiding on scroll down */
.header-hidden {
    transform: translateY(-100%);
}

.header-top {
    padding: var(--spacing-lg) 0;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.date-weather {
    display: flex;
    flex-direction: column;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.logo-container {
    text-align: center;
}

a.logo-container {
    color: inherit;
text-decoration: none;
}

.site-title {
    font-size: 2.5rem;
    margin-bottom: 0;
    letter-spacing: -0.02em;
}

.site-tagline {
    font-size: 0.875rem;
    color: var(--color-text-light);
    letter-spacing: 0.1em;
    margin-bottom: 0;
}

.user-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-toggle {
    color: var(--color-text);
    font-size: 1.25rem;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.search-toggle:hover {
    color: var(--color-accent);
    transform: scale(1.1);
}

.subscribe-button, 
.sign-in-button {
    padding: 0.5em 1.5em;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.subscribe-button {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.subscribe-button:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
}

.sign-in-button {
    border: 1px solid var(--color-border);
    background-color: transparent;
    color: var(--color-text);
}

.sign-in-button:hover {
    background-color: var(--color-muted);
    transform: translateY(-2px);
}

/* Navigation */
.main-navigation {
    background-color: var(--color-background);
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-list {
    display: flex;
    list-style: none;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: var(--spacing-md);
    color: var(--color-text);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.nav-link.active {
    color: var(--color-accent);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background-color: var(--color-accent);
}

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

/* Search container */
.search-container {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    display: none;
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
}

.search-container.active {
    display: block;
    transform: translateY(0);
}

.search-form {
    display: flex;
    gap: var(--spacing-md);
}

.search-form input {
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-muted);
    font-size: 1.1rem;
    transition: border-color var(--transition-fast);
    color: var(--text-col);
}

.search-form input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.search-form button {
    padding: 0 var(--spacing-md);
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

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

.search-close {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-light);
    font-size: 1.25rem;
    transition: color var(--transition-fast);
}

.search-close:hover {
    color: var(--color-text);
}

/* ===== MAIN CONTENT ===== */
.site-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

/* Hero Section */
.hero-section {
    margin-bottom: var(--spacing-xxl);
}

.featured-article {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-muted);
}

.featured-image-container {
    position: relative;
    height: 0;
    padding-bottom: 60%;
    overflow: hidden;
}

.featured-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.featured-article:hover .featured-image {
    transform: scale(1.05);
}

.category-tag {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: 0.25em 0.75em;
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
    color: var(--color-text);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: var(--z-low);
}

.category-tag.politics { color: var(--color-politics); }
.category-tag.business { color: var(--color-business); }
.category-tag.technology { color: var(--color-technology); }
.category-tag.science { color: var(--color-science); }
.category-tag.health { color: var(--color-health); }
.category-tag.arts { color: var(--color-arts); }
.category-tag.sports { color: var(--color-sports); }
.category-tag.environment { color: var(--color-environment); }

.featured-content {
    padding: var(--spacing-xl);
}

.featured-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.featured-excerpt {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
}

.article-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.author {
    font-weight: 600;
}

.read-more-button {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 0.75em 2em;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.read-more-button:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
    text-decoration: none;
}

/* Top Stories */
.top-stories {
    margin-bottom: var(--spacing-xxl);
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.story-card {
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-muted);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.story-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.story-image-container {
    position: relative;
    height: 0;
    padding-bottom: 60%;
    overflow: hidden;
}

.story-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.story-card:hover .story-image {
    transform: scale(1.05);
}

.story-content {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.story-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.story-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* Trending Section */
.trending-section {
    margin-bottom: var(--spacing-xxl);
    padding: var(--spacing-xl) 0;
    background-color: var(--color-muted);
}

.trending-carousel {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-lg);
    overflow-x: auto;
    padding-bottom: var(--spacing-lg);
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent) var(--color-border);
}

.trending-item {
    padding: var(--spacing-lg);
    background-color: var(--color-background);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-normal);
}

.trending-item:hover {
    transform: translateY(-5px);
}

.trend-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-muted);
    position: absolute;
    top: -0.5rem;
    right: 0.5rem;
    opacity: 0.5;
    font-family: var(--font-serif);
}

.trending-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.trending-category {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

/* Category Sections */
.category-sections {
    margin-bottom: var(--spacing-xxl);
}

.category-container {
    margin-bottom: var(--spacing-xxl);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.view-all {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.view-all:hover {
    color: var(--color-accent);
}

.category-articles {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
}

.category-article {
    padding-bottom: var(--spacing-lg);
    position: relative;
}

.category-article:not(:first-child) {
    padding-left: var(--spacing-lg);
    border-left: 1px solid var(--color-border);
}

.article-image-container {
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    border-radius: var(--radius-sm);
}

.article-image {
    transition: transform var(--transition-slow);
}

.category-article:hover .article-image {
    transform: scale(1.05);
}

.article-title {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.article-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* Editor's Picks */
.editor-picks {
    margin-bottom: var(--spacing-xxl);
}

.picks-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.pick-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-muted);
    transition: transform var(--transition-normal);
}

.pick-card:hover {
    transform: translateY(-5px);
}

.pick-image-container {
    position: relative;
    height: 0;
    padding-bottom: 60%;
    overflow: hidden;
}

.pick-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.pick-card:hover .pick-image {
    transform: scale(1.05);
}

.pick-content {
    padding: var(--spacing-lg);
}

.editor-tag {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.25em 0.75em;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.pick-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.pick-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* Newsletter Section */
.newsletter-section {
    margin-bottom: var(--spacing-xxl);
}

.newsletter-container {
    background-color: var(--color-muted);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-xl);
}

.newsletter-content {
    flex: 1;
}

.newsletter-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.newsletter-description {
    font-size: 1rem;
    color: var(--color-text-light);
}

.newsletter-form {
    flex: 1;
}

.form-group {
    display: flex;
    margin-bottom: var(--spacing-md);
}

.form-group input {
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-top-left-radius: var(--radius-sm);
    border-bottom-left-radius: var(--radius-sm);
    font-size: 1rem;
    background-color: var(--color-background);
    color: var(--text-col);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group .subscribe-button {
    padding: var(--spacing-md) var(--spacing-xl);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.form-options {
    display: flex;
    gap: var(--spacing-xl);
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    cursor: pointer;
}

.checkmark {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    position: relative;
}

.checkbox-container input:checked + .checkmark::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background-color: var(--color-accent);
    border-radius: 1px;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

/* ===== FOOTER ===== */
.site-footer {
    background-color: var(--color-muted);
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    flex: 1;
}

.footer-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.footer-nav {
    flex: 2;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.footer-nav-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.footer-nav-list, .social-links {
    list-style: none;
}

.footer-nav-list li {
    margin-bottom: var(--spacing-sm);
}

.footer-nav-list a {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.footer-nav-list a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-background);
    border-radius: 50%;
    color: var(--color-text);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xl);
}

.copyright {
    color: var(--color-text-light);
    margin: 0;
}

.legal-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.legal-nav a {
    color: var(--color-text-light);
}

#back-to-top-button {
    background-color: var(--color-accent);
    color: var(--color-white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

#back-to-top-button:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-3px);
}

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 1024px) {
    :root {
        --container-width: 90%;
    }
    
    .featured-article {
        grid-template-columns: 1fr;
    }
    
    .category-articles {
        grid-template-columns: 1fr 1fr;
    }
    
    .category-article:not(:first-child) {
        padding-left: 0;
        border-left: none;
    }
    
    .picks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .trending-carousel {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .newsletter-container {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .site-title {
        font-size: 2rem;
    }
    
    .header-top .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .date-weather {
        align-items: center;
    }
    
    .mobile-menu-toggle {
        display: block;
        width: 30px;
        height: 22px;
        position: relative;
    }
    
    .mobile-menu-toggle span {
        display: block;
        position: absolute;
        height: 3px;
        width: 100%;
        background: var(--color-text);
        opacity: 1;
        left: 0;
        transform: rotate(0deg);
        transition: all 0.25s ease-in-out;
    }
    
    .mobile-menu-toggle span:nth-child(1) {
        top: 0px;
    }
    
    .mobile-menu-toggle span:nth-child(2) {
        top: 10px;
    }
    
    .mobile-menu-toggle span:nth-child(3) {
        top: 20px;
    }
    
    .mobile-menu-toggle.open span:nth-child(1) {
        top: 10px;
        transform: rotate(135deg);
    }
    
    .mobile-menu-toggle.open span:nth-child(2) {
        opacity: 0;
        left: -60px;
    }
    
    .mobile-menu-toggle.open span:nth-child(3) {
        top: 10px;
        transform: rotate(-135deg);
    }
    
    .nav-list {
        flex-direction: column;
        display: none;
    }
    
    .nav-list.open {
        display: flex;
    }
    
    .main-navigation .container {
        display: flex;
        justify-content: flex-end;
    }
    
    .category-articles,
    .picks-grid {
        grid-template-columns: 1fr;
    }
    
    .trending-carousel {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-top {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
    
    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .trending-carousel {
        grid-template-columns: 1fr;
    }
    
    .story-card {
        margin-bottom: var(--spacing-md);
    }
    
    .user-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .subscribe-button,
    .sign-in-button {
        width: 100%;
    }
    
    .footer-nav {
        grid-template-columns: 1fr;
    }
    
    .footer-legal {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }
    
    .legal-nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none !important;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.text-center {
    text-align: center;
}

/* Missing articles notice styling */
.missing-articles-notice {
    background-color: var(--color-muted);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.missing-articles-notice h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.missing-articles-notice p {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}