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

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --border: #334155;
    --success: #10b981;
}

* {
    font-family: 'Cairo', sans-serif;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
}

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

.header {
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    padding: 40px 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.3);
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.logo {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 900;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 400;
}

.controls {
    display: flex;
    gap: 15px;
    padding: 25px 20px;
    background: var(--bg-secondary);
    align-items: center;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.search-box {
    flex: 1;
    min-width: 250px;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 14px 45px 14px 20px;
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.6;
}

.btn-refresh {
    padding: 14px 28px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-refresh:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.sources {
    display: flex;
    gap: 10px;
    padding: 20px;
    background: var(--bg-secondary);
    overflow-x: auto;
    scroll-behavior: smooth;
}

.source-btn {
    padding: 10px 20px;
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border);
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.3s;
}

.source-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.source-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.loading {
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
    padding: 20px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    border-color: var(--accent);
}

.news-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--bg-secondary);
}

.news-content {
    padding: 20px;
}

.news-source {
    display: inline-block;
    padding: 4px 12px;
    background: var(--accent);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 15px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.read-more {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    grid-column: 1 / -1;
}

.footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
    margin-top: 40px;
}

@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
        padding: 15px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: auto;
    }
}