body {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #000;
    color: #fff;
    font-family: Arial, sans-serif;
}

canvas {
    border: 1px solid #444;
    background: radial-gradient(circle at center, #001, #000);
    margin-top: 1rem;
}

.controls {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

label {
    display: flex;
    flex-direction: column;
    font-size: 14px;
}