/* Root Colors & Variables */
:root {
    --brand-color: #3B82F6;
    --text-dark: #0f1724;
    --text-light: #f5f5f5;
    --bg-light: #ffffff;
    --bg-dark: #121212;
    --neutral-gray: #9a9b9c;
    --success: #28A745;
    --danger: #FF4C4C;
    --spacing-unit: 8px;
    --card-shadow: 0 4px 8px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    transition: var(--transition);
}

body.dark {
    background: var(--bg-dark);
    color: var(--text-light);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background-color: var(--brand-color);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 2rem;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: bold;
}

.search-bar {
    display: flex;
    margin: 0 20px;
    flex-grow: 1;
    max-width: 500px;
}

.search-bar input {
    padding: 12px 15px;
    border: none;
    border-radius: 8px 0 0 8px;
    width: 100%;
    font-size: 1rem;
}

.search-bar button {
    padding: 12px 15px;
    border: none;
    background: var(--text-dark);
    color: white;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    transition: var(--transition);
}

.search-bar button:hover {
    background: #1e293b;
}

.theme-toggle {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* Navigation Styles */
nav {
    background-color: var(--bg-light);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

body.dark nav {
    background-color: #1e293b;
}

.categories {
    display: flex;
    list-style: none;
    overflow-x: auto;
    padding: 15px 0;
    gap: 20px;
}

.categories li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    transition: var(--transition);
    white-space: nowrap;
}

body.dark .categories li a {
    color: var(--text-light);
}

.categories li a:hover,
.categories li a.active {
    background-color: var(--brand-color);
    color: white;
}

/* Main Content Styles */
main {
    padding: 30px 0;
}

section {
    margin-bottom: 40px;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--brand-color);
    padding-bottom: 10px;
    display: inline-block;
}

/* Featured News Styles */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.featured-article {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    background: var(--bg-light);
}

body.dark .featured-article {
    background: #1e293b;
}

.featured-article:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.featured-article:first-child {
    grid-column: span 2;
    grid-row: span 2;
}

.featured-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.featured-article:first-child .featured-image {
    height: 300px;
}

.article-content {
    padding: 20px;
}

.article-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: bold;
}

.featured-article:first-child .article-title {
    font-size: 1.5rem;
}

.article-description {
    color: var(--neutral-gray);
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    color: var(--neutral-gray);
    font-size: 0.9rem;
}

/* News Grid Styles */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.article-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    background: var(--bg-light);
    height: 100%;
    display: flex;
    flex-direction: column;
}

body.dark .article-card {
    background: #1e293b;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.article-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.article-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.article-source {
    font-size: 0.8rem;
    color: var(--brand-color);
    margin-bottom: 8px;
    font-weight: bold;
}

.article-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
    font-weight: bold;
    flex-grow: 1;
}

.article-description {
    color: var(--neutral-gray);
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 2;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    color: var(--neutral-gray);
    font-size: 0.85rem;
    margin-top: auto;
}

.load-more-container {
    text-align: center;
    margin-top: 30px;
}

.load-more-btn {
    padding: 12px 30px;
    background-color: var(--brand-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.load-more-btn:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
}

/* Footer Styles */
footer {
    background-color: var(--text-dark);
    color: white;
    padding: 40px 0 20px;
}

body.dark footer {
    background-color: #0f1724;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #334155;
    color: #cbd5e1;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-article:first-child {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .search-bar {
        margin: 0;
        width: 100%;
        max-width: 100%;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .featured-article:first-child {
        grid-column: 1;
    }
    
    .categories {
        gap: 10px;
    }
}

@media (max-width: 576px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}