* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Segoe UI", Tahoma, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
    text-align: center;
    direction: rtl;
}
header {
    background: #2c3e50;
    color: white;
    padding: 2rem;
}
main {
    padding: 2rem;
    min-height: 60vh;
}
footer {
    background: #2c3e50;
    color: white;
    padding: 1rem;
    font-size: 0.9rem;
}