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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    background-color: #f5f7fa;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 0 30px;
    margin-bottom: 40px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.logo {
    font-size: 2.5em;
    margin-bottom: 5px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1em;
    opacity: 0.95;
    margin-bottom: 25px;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
}

.nav a {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    transition: background 0.3s;
    font-size: 0.9em;
}

.nav a:hover,
.nav a.active {
    background: rgba(255,255,255,0.4);
}

.lang-filter {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9em;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.lang-filter a {
    color: white;
    text-decoration: none;
    padding: 6px 12px;
    background: rgba(255,255,255,0.2);
    border-radius: 15px;
    transition: background 0.3s;
}

.lang-filter a:hover,
.lang-filter a.active {
    background: rgba(255,255,255,0.4);
}

.lang-badge {
    display: inline-block;
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 0.75em;
    font-weight: 600;
    margin-left: 5px;
}

.sort {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9em;
    flex-wrap: wrap;
}

.sort a {
    color: white;
    text-decoration: none;
    padding: 6px 12px;
    background: rgba(255,255,255,0.2);
    border-radius: 15px;
    transition: background 0.3s;
}

.sort a:hover,
.sort a.active {
    background: rgba(255,255,255,0.4);
}

.articles {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.article-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: transform 0.2s, box-shadow 0.2s;
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.article-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.9em;
}

.article-source {
    color: #667eea;
    font-weight: 600;
}

.article-date {
    color: #666;
}

.article-title {
    font-size: 1.5em;
    margin-bottom: 12px;
    color: #222;
    line-height: 1.4;
}

.article-summary {
    color: #444;
    margin-bottom: 15px;
    line-height: 1.7;
}

.article-categories {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.category-tag {
    background: #e8eaf6;
    color: #5c6bc0;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8em;
}

.article-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.article-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

.empty {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: 10px;
    color: #666;
}

.empty .small {
    margin-top: 10px;
    font-size: 0.9em;
}

.footer {
    text-align: center;
    padding: 30px 0;
    color: #666;
    border-top: 1px solid #e0e0e0;
    margin-top: 60px;
}

.footer .small {
    margin-top: 5px;
    font-size: 0.9em;
}

.footer a {
    color: #667eea;
    text-decoration: none;
}

@media (max-width: 600px) {
    .logo {
        font-size: 2em;
    }
    .article-card {
        padding: 18px;
    }
    .article-title {
        font-size: 1.3em;
    }
}