body {
    margin: 0;
    overflow: hidden;
    font-family: Arial, sans-serif;
  }
  
  #container {
    position: relative;
    width: 100%;
    height: 100vh;
  }
  
  #scene-container, #menu-container {
    width: 100%;
    height: 100%;
  }
  
  #toggle-btn {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 100;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
  }
  
  /* Styles for 2D Menu */
  #menu-container {
    display: none;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
  }
  
  .menu-item {
    width: 100px;
    height: 100px;
    margin: 10px;
    background-color: #3498db;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #576571;
    font-weight: bold;
    transition: transform 0.3s;
  }
  
  .menu-item:hover {
    transform: scale(1.1);
  }