body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #222;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#gameCanvas {
    display: block;
    background: #000;
    box-shadow: 0 0 20px #000a;
}
#controls {
    position: absolute;
    top: 30px;
    left: 0;
    width: 100vw;
    display: flex;
    justify-content: center;
    gap: 20px;
    z-index: 2;
}
#controls button {
    font-size: 1.2rem;
    padding: 10px 24px;
    border-radius: 8px;
    border: none;
    background: #444;
    color: #fff;
    cursor: pointer;
    transition: background 0.2s;
}
#controls button:hover {
    background: #666;
}
#score {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100vw;
    text-align: center;
    font-size: 2rem;
    color: #fff;
    text-shadow: 0 2px 8px #000a;
    z-index: 2;
    pointer-events: none;
}