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

:root {

    --primary-color: #1a365d;

    --secondary-color: #d4af37;

    --accent-color: #dc2626;

    --light-color: #f8fafc;
    --dark-color: #0f172a;
    --gray-100: #f1f5f9;
    --gray-300: #cbd5e1;
    --gray-500: #64748b;
    --gray-700: #334155;
    --gray-900: #0f172a;


    --font-heading: Georgia, "Times New Roman", serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Courier New", monospace;


    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 5rem;


    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);


    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;


    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--gray-900);
    background-color: #ffffff;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--dark-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

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

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

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

ul,
li {
    list-style: none;
}

/* ===== LAYOUT UTILITIES ===== */
.line-clamp-1 {
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
}

.line-clamp-2 {
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.line-clamp-3 {
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.line-clamp-4 {
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.flex {
    display: flex;
}

.grid {
    display: grid;
}

/* ===== HEADER & NAVIGATION ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-normal);
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--gray-100);
    backdrop-filter: blur(20px);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    transition: height var(--transition-normal);
}

.site-header.scrolled .header-container {
    height: 60px;
}

/* Logo */
.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    transition: transform var(--transition-normal);
}

.site-header.scrolled .logo {
    font-size: 1.4rem;
}

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

/* Main Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

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

.nav-link.active::after {
    width: 100%;
}

/* CTA Button */
.cta-button {
    background-color: var(--accent-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
}

.cta-button:hover {
    background-color: #b91c1c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cta-button:active {
    transform: translateY(0);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--dark-color);
    transition: all var(--transition-normal);
    border-radius: 3px;
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: white;
        box-shadow: var(--shadow-lg);
        padding: 80px var(--space-lg) var(--space-lg);
        transition: right 0.3s ease;
        z-index: 999;
        overflow-y: auto;
        display: none;
    }

    .main-nav.active {
        display: block;
        right: 0;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        padding: var(--space-md);
        border-bottom: 1px solid var(--gray-100);
        font-size: 1rem;
        display: block;
        width: 100%;
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    /* 汉堡菜单按钮修复 */
    .menu-toggle {
        display: flex;
        position: relative;
        z-index: 1000;
    }

    /* 覆盖层 */
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 998;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .nav-overlay.active {
        display: block;
        opacity: 1;
    }

    /* 防止页面滚动 */
    body.menu-open {
        overflow: hidden;
    }

    /* 修复容器高度 */
    .header-container {
        height: 60px;
    }
}

/* ===== ANNOUNCEMENT BAR ===== */
.announcement-bar {
    background-color: var(--primary-color);
    color: white;
    padding: var(--space-xs) 0;
    margin-top: 70px;
    transition: margin-top var(--transition-normal);
}

.site-header.scrolled+.announcement-bar {
    margin-top: 60px;
}

.announcement-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.live-badge {
    background-color: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
}

.live-badge::before {
    content: '●';
    font-size: 0.5rem;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ===== MAIN CONTENT ===== */
.main-content {
    padding: var(--space-xl) 0;
    min-height: 60vh;
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: var(--space-lg);
    border-bottom: 2px solid var(--gray-100);
    padding-bottom: var(--space-sm);
}

.view-all {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: color var(--transition-fast);
}

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

/* ===== CARD STYLES ===== */

.card-timeline {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--accent-color);
}

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

.card-timeline .card-image {
    overflow: hidden;
    position: relative;
    aspect-ratio: 4 / 3;
}

.card-timeline img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.card-content {
    padding: var(--space-md);
}


.card-minimal {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--primary-color);
    transition: all var(--transition-normal);
}

.card-minimal:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}


.card-featured {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: relative;
}

.card-featured:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.featured-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background-color: var(--secondary-color);
    color: var(--dark-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    z-index: 2;
}


.category-card {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    color: var(--primary-color);
    transition: transform var(--transition-normal);
}

.category-card:hover .category-icon {
    transform: scale(1.1);
}

.category-count {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
}


.news-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 0.875rem;
    color: var(--gray-500);
    flex-wrap: wrap;
}

.category-tag {
    background-color: var(--gray-100);
    color: var(--gray-700);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    display: inline-block;
    transition: all var(--transition-fast);
}

.category-tag:hover {
    background-color: var(--primary-color);
    color: white;
}

.breaking-tag {
    background-color: var(--accent-color);
    color: white;
}

.card-timeline h3,
.card-featured h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-minimal h4 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-excerpt {
    color: var(--gray-700);
    font-size: 0.95rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.read-more {
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: color var(--transition-fast);
}

.read-more:hover {
    color: var(--accent-color);
}

/* ===== HOMEPAGE SPECIFIC ===== */
.breaking-news {
    margin: var(--space-xxl) 0;
}

.breaking-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xxl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xxl);
}

.card-image {
    aspect-ratio: 4/3;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hot-topics {
    background-color: var(--gray-100);
    padding: var(--space-xl) 0;
    margin-bottom: var(--space-xxl);
    border-radius: var(--radius-lg);
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

.topic-item {
    background: white;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

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

.topic-trend {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
}

.editors-pick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

/* ===== LIST PAGE SPECIFIC ===== */
.list-header {
    background-color: var(--gray-100);
    padding: var(--space-xl) 0;
    margin-bottom: var(--space-xl);
}


.breadcrumb-nav {
    margin: var(--space-xl) 0;
}

.breadcrumb-nav ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
    padding: var(--space-md);
    background-color: var(--gray-100);
    border-radius: var(--radius-md);
}

.breadcrumb-nav li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}


.list-layout {
    display: grid;
    grid-template-columns: 70% 30%;
    gap: var(--space-xl);
}

.main-content-area {
    width: 100%;
    overflow: hidden;
}


.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.filter-group {
    position: relative;
    min-width: 200px;
    flex: 1;
}

.filter-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--gray-700);
}


.static-dropdown {
    position: relative;
    width: 100%;
}

.dropdown-toggle {
    width: 100%;
    padding: 0.75rem;
    background-color: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--gray-900);
    cursor: pointer;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.dropdown-toggle:hover {
    border-color: var(--gray-500);
}

.dropdown-toggle:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.dropdown-arrow {
    transition: transform var(--transition-normal);
    font-size: 0.75rem;
}


.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    margin-top: 0.25rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 100;
    max-height: 300px;
    overflow-y: auto;
}


.static-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.static-dropdown:focus-within .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background-color: var(--gray-100);
}

.dropdown-item.selected {
    background-color: var(--primary-color);
    color: white;
}


.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-sm);
    border-radius: var(--radius-sm);
    background-color: white;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.page-link:hover:not(.disabled):not(.active) {
    background-color: var(--gray-100);
    border-color: var(--gray-500);
}

.page-link.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    cursor: default;
}

.page-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}


.articles-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

/* ===== ARTICLE PAGE SPECIFIC ===== */
.article-header {
    padding: var(--space-xl) 0 var(--space-lg);
    border-bottom: 1px solid var(--gray-100);
    margin-bottom: var(--space-xl);
}

.article-title {
    font-size: 2.75rem;
    line-height: 1.1;
    margin-bottom: var(--space-sm);
}

.article-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--gray-700);
    margin-bottom: var(--space-lg);
    line-height: 1.4;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    color: var(--gray-500);
    font-size: 0.95rem;
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.author-info:hover .author-avatar {
    transform: scale(1.05);
}

.article-image {
    margin: var(--space-xl) 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}

.article-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

.article-image:hover img {
    transform: scale(1.02);
}

.article-image figcaption {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--space-xs);
    padding: 0 var(--space-sm);
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-xl) 0;
}

.article-content img {
    margin: 0 auto;
}

.article-lead {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--gray-800);
    padding: var(--space-lg);
    background-color: var(--gray-100);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
}

.article-content h2 {
    margin-top: var(--space-xl);
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid var(--gray-100);
    color: var(--dark-color);
}

.article-content h3 {
    margin-top: var(--space-lg);
    color: var(--dark-color);
}

.article-content ul,
.article-content ol {
    margin: var(--space-md) 0 var(--space-md) var(--space-xl);
    padding-left: var(--space-md);
}

.article-content li {
    margin-bottom: var(--space-xs);
}

.article-content blockquote {
    border-left: 4px solid var(--secondary-color);
    padding-left: var(--space-lg);
    margin: var(--space-lg) 0;
    font-style: italic;
    color: var(--gray-700);
    font-size: 1.1rem;
    background-color: var(--gray-100);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
}

.article-content blockquote footer {
    margin-top: var(--space-sm);
    font-size: 0.9rem;
    font-style: normal;
    color: var(--gray-600);
    text-align: right;
}


.share-buttons {
    display: flex;
    gap: var(--space-sm);
    margin: var(--space-xl) 0;
    padding: var(--space-md) 0;
    border-top: 1px solid var(--gray-100);
    border-bottom: 1px solid var(--gray-100);
    align-items: center;
    flex-wrap: wrap;
}

.share-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--gray-100);
    color: var(--gray-700);
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.share-button:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.share-button:active {
    transform: translateY(0);
}


.author-bio {
    background-color: var(--gray-100);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin: var(--space-xl) 0;
    transition: all var(--transition-normal);
}

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


.comments-section {
    margin: var(--space-xxl) 0;
}

.comment-form {
    background-color: var(--gray-100);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.95rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
    background-color: white;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}


.related-articles {
    margin: var(--space-xxl) 0;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

/* ===== SIDEBAR ===== */
.sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.sidebar-widget {
    margin-bottom: var(--space-lg);
}

.sidebar-widget:last-child {
    margin-bottom: 0;
}

.sidebar-widget h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--gray-100);
}


.trending-list {
    display: flex;
    flex-direction: column;
}

.trending-item {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-100);
    transition: background-color var(--transition-fast);
    cursor: pointer;
}

.trending-item:hover {
    background-color: var(--gray-100);
    padding-left: var(--space-xs);
}

.trending-item:last-child {
    border-bottom: none;
}


.subcategories-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.subcategory-item {
    display: block;
    padding: var(--space-sm);
    background-color: var(--gray-100);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.subcategory-item:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateX(4px);
}

.subcategory-item span:last-child {
    transition: all var(--transition-normal);
}

.subcategory-item:hover span:last-child {
    background-color: white;
    color: var(--primary-color);
}


.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}


.editor-pick {
    background-color: var(--gray-100);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

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

/* ===== FOOTER ===== */
.site-footer {
    background-color: var(--primary-color);
    color: white;

}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    margin-top: var(--space-md);
}

.footer-links h4,
.footer-services h4 {
    color: white;
    margin-bottom: var(--space-lg);
    font-size: 1.1rem;
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

.footer-links li,
.footer-services li {
    margin-bottom: var(--space-sm);
}

.footer-links a,
.footer-services a {
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-links a:hover,
.footer-services a:hover {
    color: white;
    padding-left: 4px;
}


.subscribe-form {
    margin-top: var(--space-md);
}

.footer-input {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    margin-bottom: var(--space-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.footer-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.footer-input:focus {
    outline: none;
    border-color: white;
    background-color: rgba(255, 255, 255, 0.15);
}

.footer-button {
    width: 100%;
    background-color: var(--secondary-color);
    color: var(--dark-color);
    border: none;
    padding: 0.875rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    font-size: 1rem;
}

.footer-button:hover {
    background-color: #e6c158;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom a {
    color: var(--gray-100);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 998;
    border: none;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.back-to-top:active {
    transform: translateY(-2px);
}

/* ===== 404 PAGE ===== */
.page-404 {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xxl) 0;
}

.error-code {
    font-size: 8rem;
    font-weight: 900;
    color: var(--gray-300);
    line-height: 1;
    margin-bottom: var(--space-md);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .list-layout {
        grid-template-columns: 1fr 280px;
        gap: var(--space-lg);
    }
}

@media (max-width: 1024px) {
    .breaking-grid {
        grid-template-columns: 1fr 1fr;
    }

    .article-title {
        font-size: 2.5rem;
    }

    .article-subtitle {
        font-size: 1.25rem;
    }
}

@media (max-width: 900px) {
    .list-layout {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .sidebar {
        position: static;
        top: auto;
    }

    .filters-container {
        flex-direction: column;
    }

    .filter-group {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .site-header {
        position: absolute;
    }

    .header-container {
        height: auto;
    }

    .announcement-bar {
        margin-top: 60px;
    }

    .logo {
        font-size: 1.4rem;
    }

    .cta-button {
        padding: 0.625rem 1.25rem;
        font-size: 0.8rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .breadcrumb-nav {
        margin-top: 0;
    }

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

    .breaking-news {
        margin-top: 0px;
    }

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

    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--space-md);
    }

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

    .article-title {
        font-size: 1.4rem;
        line-height: 1.2;
    }

    .article-subtitle {
        font-size: 1.1rem;
    }

    .article-lead {
        font-size: 1.1rem;
        padding: var(--space-md);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .announcement-content {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }

    .share-buttons {
        justify-content: center;
    }

    .author-bio {
        padding: var(--space-lg);
    }

    .comment-form {
        padding: var(--space-lg);
    }

    .back-to-top {
        bottom: var(--space-md);
        right: var(--space-md);
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .card-timeline h3,
    .card-featured h3 {
        font-size: 1.25rem;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }

    .article-header {
        padding: 0;
    }

    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .pagination {
        gap: 0.25rem;
    }

    .page-link {
        min-width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }
}

@media (max-width: 320px) {
    .container {
        padding: 0 var(--space-xs);
    }

    .card-content {
        padding: var(--space-sm);
    }

    .footer-input,
    .footer-button {
        padding: 0.75rem;
    }
}

/* ===== ACCESSIBILITY ===== */
@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;
    }

    .live-badge::before {
        animation: none;
    }
}

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    z-index: 1001;
    text-decoration: none;
    border-radius: 0 0 4px 0;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --accent-color: #8b0000;
        --secondary-color: #d4af37;
    }

    .site-header {
        background-color: white;
        border-bottom: 2px solid var(--dark-color);
    }

    .site-header.scrolled {
        background-color: white;
        border-bottom: 3px solid var(--dark-color);
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #3b82f6;
        --secondary-color: #fbbf24;
        --accent-color: #ef4444;
        --light-color: #0f172a;
        --dark-color: #f8fafc;
        --gray-100: #1e293b;
        --gray-300: #334155;
        --gray-500: #64748b;
        --gray-700: #cbd5e1;
        --gray-900: #f1f5f9;
    }

    body {
        background-color: #0f172a;
        color: #cbd5e1;
    }

    .site-header {
        background-color: rgba(15, 23, 42, 0.95);
    }

    .site-header.scrolled {
        background-color: rgba(15, 23, 42, 0.98);
        border-bottom: 1px solid var(--gray-300);
    }

    .card-timeline,
    .card-minimal,
    .card-featured,
    .category-card {
        background-color: #1e293b;
        border-color: #334155;
    }

    .hot-topics {
        background-color: #1e293b;
    }

    .topic-item {
        background-color: #0f172a;
    }

    .list-header {
        background-color: #1e293b;
    }

    .comment-form,
    .author-bio,
    .editor-pick {
        background-color: #1e293b;
    }

    .article-lead {
        background-color: #1e293b;
    }

    .form-input,
    .form-textarea,
    .dropdown-toggle,
    .dropdown-menu {
        background-color: #1e293b;
        border-color: #334155;
        color: #cbd5e1;
    }

    .form-input:focus,
    .form-textarea:focus {
        border-color: var(--primary-color);
    }

    .footer-input {
        background-color: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
    }

    .menu-toggle span {
        background-color: var(--gray-700);
    }
}