/* Algemene opmaak */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
  }
  
  body {
    background-color: #f4f4f9;
    color: #333;
    line-height: 1.6;
  }
  
  /* Navbar */
  header {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
    text-decoration: none;
  }
  
  .nav-links {
    display: flex;
    gap: 20px;
  }
  
  .nav-links a {
    color: #fff;
    text-decoration: none;
    padding: 8px 12px;
    transition: all 0.3s ease-in-out;
    border-radius: 4px;
  }
  
  .nav-links a:hover,
  .nav-links a.active {
    background-color: #0078d7;
  }
  
  /* Burger Menu (hidden on desktop) */
  .burger-menu {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1100; /* Zorg ervoor dat het boven andere elementen staat */
  }
  
  .burger-menu .bar {
    background-color: #fff;
    height: 3px;
    width: 25px;
    margin: 3px 0;
    transition: all 0.3s ease;
  }

  .burger-menu.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .burger-menu.active .bar:nth-child(2) {
    opacity: 0;
  }

  .burger-menu.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  /* Responsive Design */
  @media screen and (max-width: 768px) {
    .burger-menu {
        display: flex;
    }
  
    .nav-links {
        display: none;
        flex-direction: column;
        background-color: #333;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        text-align: center;
        padding: 10px 0;
        z-index: 1000;
    }
  
    .nav-links.active {
        display: flex;
    }
  
    .nav-links a {
        padding: 10px;
        color: #fff;
        font-size: 1.1rem;
    }
  
    .content {
        flex-direction: column;
        text-align: center;
    }
  
    .image-about img {
        max-width: 80%;
    }

    .cards-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .card {
        width: 90%;
        max-width: 400px;
        margin: 0 auto;
    }
  }

  /* Shadow Transition */
  .shadow-transition {
    transition: text-shadow 0.3s ease-in-out;
  }

  .shadow-transition:hover {
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
  }

  /* Fade-in Animation */
  .fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 2s ease-in-out forwards;
  }

  @keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
  }