.sidebar {
    width: 250px;
    background-color: #2c3e50;
    color: #ecf0f1;
    display: flex;
    flex-direction: column;
    transition: width 0.3s;
  }
  
  .sidebar.collapsed {
    width: 60px;

  }
  
  .sidebar-header {
    display: flex;
    align-items: center;
    padding: 10px;
    background-color: #34495e;
    justify-content: space-between;
  }

  .sidebar-header.collapsed {
    justify-content: center;
  }
  
  .logo {
    height: 40px;
    margin-right: 10px;
  }
  
  .menu-items {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .menu-items li {
    padding: 15px 20px;
    cursor: pointer;
  }

  .menu-items li.active {
    background-color: darkslategray;
    padding: 15px 20px;
    cursor: pointer;
  }

  .menu-items li:hover {
    background-color: #1abc9c;
  }
  
  .menu-items li a {
    text-decoration: none;
    color: inherit;
    font-size: 18px;
  }
  
  .toggle-btn {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
  }
  
  .sidebar.collapsed .menu-items li a {
    display: none;
  }
  
  .sidebar.collapsed .logo {
    height: 40px;
    margin: auto;
  }