body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #000;
    cursor: pointer;
    touch-action: none; /* タッチ操作のデフォルト動作を無効化 */
    font-family: 'Courier New', monospace;
}
#info {
    position: absolute;
    top: 20px;
    left: 20px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    background: rgba(0,0,0,0.7);
    padding: 10px 15px;
    border-radius: 5px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    z-index: 10;
}
#intensity-indicator {
    position: absolute;
    bottom: 20px;
    right: 20px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    background: rgba(0,0,0,0.7);
    padding: 10px 15px;
    border-radius: 5px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    opacity: 0;
    transition: opacity 0.3s;
}
#room-indicator {
    position: absolute;
    bottom: 20px;
    left: 20px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    background: rgba(0,0,0,0.7);
    padding: 10px 15px;
    border-radius: 5px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}
canvas {
    display: block;
}