body {
    background: #222;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    min-height: 100dvh;
    margin: 0;
}

#gameContainer {
    box-shadow: 0 0 30px #000;
    background: #333;
    padding: 20px;
    border-radius: 16px;
    width: min(90vw, 840px);
    box-sizing: border-box;
}

#scoreboard {
    color: #fff;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    font-size: 28px;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

#pongCanvas {
    background: #111;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    width: 100%;
    height: auto;
}