/* ============================================
   LOOPY CELL PHONES - PROFESSIONAL NEWS THEME
   Based on: VnExpress, Dân Trí, Tuổi Trẻ, Thanh Niên
   Version: 1.0 - April 2026
   ============================================ */

/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* Primary Colors */
    --primary: #d4001a;
    --primary-dark: #a80015;
    --primary-light: #ff1a3d;
    
    /* Secondary Colors */
    --secondary: #1a1a2e;
    --secondary-light: #16213e;
    
    /* Accent Colors */
    --accent: #f39c12;
    --accent-green: #27ae60;
    --accent-blue: #2980b9;
    
    /* Neutrals */
    --text: #1a1a1a;
    --text-secondary: #444;
    --text-muted: #888;
    --text-light: #aaa;
    
    --bg: #ffffff;
    --bg-off: #fafafa;
    --bg-gray: #f5f5f5;
    --bg-dark: #2c2c2c;
    
    --border: #e8e8e8;
    --border-light: #f0f0f0;
    
    /* Layout */
    --max-width: 1200px;
    --gutter: 16px;
    
    /* Typography */
    --font-heading: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-hover: 0 6px 20px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition: all 0.2s ease;
}

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
a:hover { color: var(--primary); }

ul, ol { list-style: none; }

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

/* ===== TOP BAR ===== */
.top-bar {
    background: var(--secondary);
    color: rgba(255,255,255,0.7);
    font-size: 0.78rem;
    padding: 7px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-bar a {
    color: rgba(255,255,255,0.7);
    transition: color 0.2s;
}

.top-bar a:hover { color: #fff; }

.top-bar .sep {
    color: rgba(255,255,255,0.3);
}

/* ===== HEADER ===== */
.site-header {
    background: var(--bg);
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: var(--font-heading);
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1.5px;
    text-transform: uppercase;
    line-height: 1;
}

.logo-main span { color: var(--text); }

.logo-sub {
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-top: 3px;
}

.header-search {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-search input {
    padding: 9px 16px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.88rem;
    width: 260px;
    outline: none;
    transition: border-color 0.2s;
}

.header-search input:focus {
    border-color: var(--primary);
}

.header-search button {
    padding: 9px 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.88rem;
    transition: background 0.2s;
}

.header-search button:hover {
    background: var(--primary-dark);
}

/* ===== MAIN NAVIGATION ===== */
.main-nav {
    background: var(--primary);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-menu {
    display: flex;
    flex-wrap: wrap;
}

.nav-menu > li {
    position: relative;
}

.nav-menu > li > a {
    display: block;
    padding: 13px 17px;
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    transition: background 0.2s;
    white-space: nowrap;
}

.nav-menu > li > a:hover,
.nav-menu > li.active > a {
    background: rgba(0,0,0,0.2);
}

/* Dropdown Menu */
.nav-menu .dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg);
    min-width: 230px;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 6px 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.25s ease;
    z-index: 100;
}

.nav-menu li:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-menu .dropdown li a {
    display: block;
    padding: 11px 18px;
    color: var(--text);
    font-size: 0.82rem;
    font-weight: 500;
    border-bottom: 1px solid var(--border-light);
    transition: all 0.15s;
}

.nav-menu .dropdown li:last-child a {
    border-bottom: none;
}

.nav-menu .dropdown li a:hover {
    background: var(--bg-gray);
    color: var(--primary);
    padding-left: 22px;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.6rem;
    cursor: pointer;
    padding: 12px 16px;
    line-height: 1;
}

/* ===== BREAKING NEWS TICKER ===== */
.breaking-ticker {
    background: var(--secondary);
    color: #fff;
    padding: 10px 0;
    overflow: hidden;
}

.breaking-ticker .container {
    display: flex;
    align-items: center;
    gap: 14px;
}

.ticker-label {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: var(--primary);
    padding: 5px 14px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    white-space: nowrap;
    border-radius: 3px;
    animation: pulse-label 2s infinite;
}

@keyframes pulse-label {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.ticker-wrap {
    overflow: hidden;
    flex: 1;
    position: relative;
}

.ticker-content {
    display: flex;
    animation: ticker-scroll 35s linear infinite;
}

.ticker-content a {
    color: #fff;
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    padding-right: 60px;
    display: inline-block;
}

.ticker-content a:hover {
    text-decoration: underline;
    color: var(--accent);
}

@keyframes ticker-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ===== HERO SECTION ===== */
.hero-section {
    padding: 32px 0 28px;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr;
    gap: 32px;
}

.hero-main-article {
    position: relative;
    padding: 0;
}

.hero-main-article .tag {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 6px 16px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.hero-main-article h1 {
    font-family: var(--font-heading);
    font-size: 2.1rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    color: var(--text);
}

.hero-main-article h1 a {
    color: var(--text);
    text-decoration: none;
}

.hero-main-article h1 a:hover {
    color: var(--primary);
}

.hero-main-article .excerpt {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}

.hero-main-article .meta {
    font-size: 0.82rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 18px;
}

.hero-main-article .meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* Hero Sidebar - Trending */
.hero-sidebar {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}

.hero-sidebar-header {
    background: var(--primary);
    color: #fff;
    padding: 10px 16px;
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.trending-item {
    display: flex;
    gap: 14px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-light);
    transition: background 0.2s;
}

.trending-item:last-child { border-bottom: none; }
.trending-item:hover { background: var(--bg-gray); }

.trending-item .num {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    min-width: 24px;
}

.trending-item h3 {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.38;
}

.trending-item h3 a { color: var(--text); }
.trending-item h3 a:hover { color: var(--primary); }

.trending-item .time {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    margin-bottom: 20px;
    border-bottom: 3px solid var(--primary);
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: var(--accent);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.view-all {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

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

/* ===== TWO COLUMN LAYOUT ===== */
.two-column {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
    padding: 28px 0;
}

/* ===== NEWS LIST ===== */
.news-list {
    display: flex;
    flex-direction: column;
}

.news-list-item {
    display: flex;
    gap: 18px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    transition: padding-left 0.2s;
}

.news-list-item:first-child { padding-top: 0; }
.news-list-item:last-child { border-bottom: none; }
.news-list-item:hover { padding-left: 6px; }

.news-list-item .cat {
    display: inline-block;
    font-size: 0.68rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
}

.news-list-item h3 {
    font-family: var(--font-heading);
    font-size: 1.12rem;
    font-weight: 600;
    line-height: 1.38;
    margin-bottom: 6px;
}

.news-list-item h3 a { color: var(--text); }
.news-list-item h3 a:hover { color: var(--primary); }

.news-list-item .desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-list-item .info {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    gap: 14px;
}

/* ===== SIDEBAR ===== */
.sidebar {
    position: relative;
}

.sidebar-widget {
    margin-bottom: 24px;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}

.widget-header {
    background: var(--primary);
    color: #fff;
    padding: 10px 16px;
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.widget-body {
    padding: 16px;
}

/* Price Table Widget */
.price-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.price-table thead th {
    padding: 8px 10px;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--primary);
}

.price-table thead th:last-child {
    text-align: right;
}

.price-table tbody td {
    padding: 10px;
    border-bottom: 1px solid var(--border-light);
}

.price-table tbody td:last-child {
    text-align: right;
    font-weight: 700;
    color: var(--primary);
}

.price-table tbody tr:last-child td {
    border-bottom: none;
}

.price-table tbody tr:hover {
    background: var(--bg-gray);
}

/* ===== ARTICLE GRID ===== */
.article-section {
    padding: 28px 0;
}

.article-section.alt-bg {
    background: var(--bg-gray);
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.article-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.article-card .card-body {
    padding: 18px;
}

.article-card .card-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    padding-bottom: 4px;
    border-bottom: 2px solid var(--primary);
}

.article-card h3 {
    font-family: var(--font-heading);
    font-size: 0.98rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 8px;
}

.article-card h3 a {
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card h3 a:hover {
    color: var(--primary);
}

.article-card .card-desc {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}

.article-card .card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* ===== OPINION SECTION ===== */
.opinion-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.opinion-card {
    background: var(--bg);
    padding: 24px;
    border-radius: 6px;
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s, transform 0.2s;
}

.opinion-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.opinion-card .author {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.opinion-card .author::before {
    content: '"';
    font-size: 1.4rem;
    font-family: Georgia, serif;
    line-height: 1;
}

.opinion-card h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
}

.opinion-card h3 a { color: var(--text); }
.opinion-card h3 a:hover { color: var(--primary); }

.opinion-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== TAGS BAR ===== */
.tags-bar {
    padding: 18px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-off);
}

.tags-bar .container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.tags-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-right: 6px;
}

.tag-item {
    padding: 6px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.2s;
}

.tag-item:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ===== FOOTER ===== */
.site-footer {
    background: var(--secondary);
    color: rgba(255,255,255,0.7);
    padding: 40px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 32px;
    padding-bottom: 32px;
}

.footer-about h4,
.footer-col h4 {
    color: #fff;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.footer-about p {
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 18px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: rgba(255,255,255,0.08);
    border-radius: 6px;
    color: rgba(255,255,255,0.8);
    font-size: 0.78rem;
    font-weight: 700;
    transition: all 0.2s;
}

.footer-social a:hover {
    background: var(--primary);
    color: #fff;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 0.88rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-col ul li a::before {
    content: '›';
    color: var(--primary);
    font-weight: 700;
}

.footer-col ul li a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-bottom {
    padding: 18px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-copyright {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
}

.footer-links a:hover { color: rgba(255,255,255,0.8); }

/* ===== ARTICLE PAGE ===== */
.article-page {
    max-width: 820px;
    margin: 0 auto;
    padding: 32px 0;
}

.article-header {
    padding-bottom: 24px;
    margin-bottom: 28px;
    border-bottom: 1px solid var(--border);
}

.article-category {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 14px;
    padding-bottom: 5px;
    border-bottom: 2px solid var(--primary);
}

.article-page-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.28;
    margin-bottom: 16px;
    letter-spacing: -0.3px;
}

.article-page-meta {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.article-body {
    font-size: 1.08rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.article-body p {
    margin-bottom: 18px;
}

.article-body h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin: 32px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
}

.article-body h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text);
    margin: 24px 0 12px;
}

.article-body ul, .article-body ol {
    margin: 12px 0 18px 24px;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
    margin-bottom: 6px;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 0.95rem;
}

.article-body th, .article-body td {
    padding: 12px 14px;
    border: 1px solid var(--border);
    text-align: left;
}

.article-body th {
    background: var(--bg-gray);
    font-weight: 600;
    color: var(--text);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.article-body tr:nth-child(even) { background: var(--bg-off); }

.article-body blockquote {
    margin: 20px 0;
    padding: 16px 20px;
    background: var(--bg-gray);
    border-left: 4px solid var(--primary);
    font-style: italic;
    color: var(--text-secondary);
}

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

/* Related Articles */
.related-section {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}

.related-section h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-card {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: box-shadow 0.2s;
}

.related-card:hover {
    box-shadow: var(--shadow-md);
}

.related-card h4 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
}

.related-card h4 a { color: var(--text); }
.related-card h4 a:hover { color: var(--primary); }

.related-card .cat {
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
    display: block;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .article-grid { grid-template-columns: repeat(3, 1fr); }
    .hero-grid { grid-template-columns: 1.5fr 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .opinion-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .top-bar .container {
        flex-direction: column;
        text-align: center;
        gap: 6px;
    }
    
    .header-main {
        flex-direction: column;
        text-align: center;
        gap: 14px;
    }
    
    .header-search input { width: 100%; }
    
    .mobile-toggle { display: block; }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background: var(--primary-dark);
    }
    
    .nav-menu.active { display: flex; }
    
    .nav-menu .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(0,0,0,0.15);
    }
    
    .nav-menu .dropdown li a {
        color: rgba(255,255,255,0.8);
        border-bottom-color: rgba(255,255,255,0.1);
        padding-left: 30px;
    }
    
    .nav-menu .dropdown li a:hover {
        background: rgba(255,255,255,0.1);
        color: #fff;
    }
    
    .hero-grid { grid-template-columns: 1fr; }
    .hero-main-article h1 { font-size: 1.5rem; }
    
    .two-column { grid-template-columns: 1fr; }
    .article-grid { grid-template-columns: repeat(2, 1fr); }
    .opinion-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    
    .article-page-title { font-size: 1.6rem; }
    .section-title { font-size: 1.1rem; }
}

@media (max-width: 480px) {
    .article-grid { grid-template-columns: 1fr; }
    .hero-main-article h1 { font-size: 1.3rem; }
    .ticker-label { font-size: 0.65rem; padding: 4px 10px; }
    .ticker-content a { font-size: 0.78rem; }
}

/* ===== UTILITY ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: 16px; }
.mt-2 { margin-top: 32px; }
.mb-1 { margin-bottom: 16px; }
.mb-2 { margin-bottom: 32px; }
.hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }