* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #0e0e0e;
    color: white;
    font-family: system-ui, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#ui {
    margin: 16px;
    font-size: 24px;
    font-weight: bold;
}

canvas {
    background: #000;
    border: 3px solid #fff;
    touch-action: none;
}

#controls {
    display: flex;
    gap: 20px;
    margin: 16px;
}

#controls button {
    width: 64px;
    height: 64px;
    font-size: 28px;
    border-radius: 12px;
    border: none;
    background: #222;
    color: white;
}

#controls button:active {
    transform: scale(0.92);
}