/* Reset en basis */
    html, body {
      margin: 0;
      padding: 0;
      height: 100%;
      background-color: #fafafa;
      overflow-x: hidden;
    }
    
    /* Overlay voor menu op klein scherm */
    #overlay {
      display: none;
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.4);
      z-index: 900;
      transition: opacity 0.3s ease;
      opacity: 0; pointer-events: none;
    }

    #overlay.active {
      display: block;
      opacity: 1;
      pointer-events: auto;
    }

        /* Main content */
    main {
      margin-left: 220px;
      padding: 2rem;
      transition: margin-left 0.3s ease;
    }


    /* Responsive */
    @media (max-width: 900px) {
      main {
        margin-left: 0;
        padding: 1rem;
      }
    }

        /* Extra kleine schermen */
    @media (max-width: 600px) {
      main {
        margin-left: 0;
        padding: 1rem;
      }
    }