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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f4f4f4;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header nav {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}

header nav a {
    color: #fff;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    transition: background-color 0.2s;
    white-space: nowrap;
    font-size: 0.95rem;
}

header nav a:hover {
    background: #555;
}

main {
    min-height: calc(100vh - 120px);
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

/* تصميم للجوال */
@media (max-width: 768px) {
    header {
        padding: 0.75rem;
    }
    
    header nav {
        gap: 8px;
        justify-content: flex-start;
    }
    
    header nav a {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
    
    main {
        padding: 15px;
    }
    
    footer {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    header nav {
        gap: 6px;
    }
    
    header nav a {
        padding: 5px 8px;
        font-size: 0.8rem;
    }
    
    main {
        padding: 10px;
    }
}