body {
    margin: 0;
    overflow: hidden;
    background: #000;
}

canvas {
    width: 100vw;
    height: 100vh;
    display: block;
}

#controls {
    position: absolute;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 1rem;
    padding: 5px;
    top: 10px;
    left: 10px;
    z-index: 10;
    color: white;
    font-family: Arial, sans-serif;
    font-size: 1.4rem;
}

@media (max-width: 768px) {
    #controls {
        font-size: 3rem;
        padding: 15px;
    }
}