body {
    margin: 0;
    background: radial-gradient(#1a1a1a, #050505);
    color: white;
    text-align: center;
    font-family: Arial;
}

canvas {
    background: #111;
    border: 3px solid gold;
    margin-top: 20px;
    box-shadow: 0 0 25px rgba(255,215,0,0.3);
}

button {
    padding: 12px 25px;
    font-size: 16px;
    margin-top: 10px;
}