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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 0;
    background: white;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.featured h2 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.card-img {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-img.loading {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.card-content {
    padding: 1.5rem;
}

.card-content h3 a {
    color: #333;
    text-decoration: none;
}

.card-content h3 a:hover {
    color: #667eea;
}

.card-content p {
    color: #666;
    margin: 0.5rem 0;
}

.meta {
    font-size: 0.85rem;
    color: #999;
}

.load-more {
    text-align: center;
    margin: 3rem 0;
}

.btn-load {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1rem;
    border-radius: 30px;
    cursor: pointer;
    transition: transform 0.3s;
}

.btn-load:hover {
    transform: scale(1.05);
}

.loader {
    margin-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.loader.hidden {
    display: none;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.newsletter {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    text-align: center;
    margin: 2rem 0;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.newsletter-form input {
    padding: 0.8rem 1.5rem;
    border: 2px solid #ddd;
    border-radius: 30px;
    width: 300px;
    font-size: 1rem;
}

.newsletter-form button {
    background: #667eea;
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    cursor: pointer;
}

footer {
    background: #333;
    color: white;
    padding: 2rem;
    text-align: center;
}

.footer-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.footer-links a {
    color: #aaa;
    text-decoration: none;
}

.footer-links a:hover {
    color: white;
}

.hidden {
    display: none;
}