body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: url('../images/background.jpg') no-repeat center center fixed;
    background-size: cover;
    color: #fff;
    text-align: center;
}

header {
    background: rgba(0, 0, 0, 0.6);
    padding: 20px 0;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 20px;
    font-weight: bold;
    font-size: 1.1em;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #00d1ff;
}

main {
    background: rgba(0, 0, 0, 0.5);
    max-width: 700px;
    margin: 50px auto;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 0 15px rgba(0,0,0,0.4);
}

h1 {
    margin-top: 0;
}