html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #0f0f0f;
    position: fixed;
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

#app {
    overflow: hidden;
    background-color: #0f0f0f;
}

#game-container {
    position: relative;
    overflow: hidden;
}

#game-container canvas {
    display: block;
    touch-action: none;
}

#nickname-input {
    position: absolute;
    display: none;
    pointer-events: none;
    border: none;
    background: transparent;
    color: #3a2a16;
    font-family: "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", "Microsoft YaHei", sans-serif;
    font-weight: bold;
    text-align: center;
    outline: none;
    padding: 0;
    z-index: 20;
}