html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: #0b0f19;
    overflow: hidden;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

#gameArea {
    position: relative;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
    border-radius: 8px;
    overflow: hidden;
}