/* Bottone impostazioni migliorato e responsive */
  #settingsBtn {
      position: fixed;
      top: 10px;
      left: 10px;
      font-size: 24px;
      background: #333;
      color: white;
      border: none;
      border-radius: 50%;
      width: 50px;
      height: 50px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      z-index: 2;
      transition: all 0.3s ease;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  }

  #settingsBtn:hover {
      background-color: #555;
      transform: translateY(-2px);
      box-shadow: 0 8px 12px rgba(0, 0, 0, 0.4);
  }

  /* Sidebar */
  #sidebar {
      height: 100%;
      width: 0;
      position: fixed;
      top: 0;
      left: 0;
      background-color: #444;
      overflow-x: hidden;
      transition: width 0.3s;
      padding-top: 60px;
      color: white;
      z-index: 1;
  }

  #sidebar a {
      padding: 10px 20px;
      text-decoration: none;
      font-size: 20px;
      color: white;
      display: block;
  }

  #sidebar a:hover {
      background-color: #555;
  }

  /* RESPONSIVE */
  @media screen and (max-width: 600px) {
      #settingsBtn {
          width: 40px;
          height: 40px;
          font-size: 20px;
      }

      #sidebar a {
          font-size: 18px;
          padding: 8px 16px;
      }
  }