/* Basis reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body, html {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background: #f8f9fa;
    color: #333;
    min-height: 100vh;
  }
  
  a {
    color: #e63946;
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  /* Container */
  .app-container {
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
  }
  
  /* Kaart */
  .card {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
  }
  
  /* Navigatie */
  .navbar {
    background: #fff;
    border-bottom: 1px solid #ddd;
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .navbar a {
    margin-left: 15px;
    color: #333;
    font-weight: bold;
  }
  
  .navbar a:hover {
    color: #e63946;
  }
  
  /* Tabellen */
  table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
  }
  
  th, td {
    padding: 10px;
    border-bottom: 1px solid #eee;
    text-align: left;
  }
  
  th {
    background: #f2f2f2;
  }
  
  /* Formulieren */
  form label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
  }
  
  form input[type="text"],
  form input[type="email"],
  form input[type="password"],
  form input[type="number"],
  form input[type="date"],
  form select,
  form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    margin-top: 5px;
    font-size: 1rem;
  }
  
  /* Knoppen */
  button.btn {
    background: #e63946;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 15px;
  }
  
  button.btn:hover {
    background: #c92c3b;
  }
  
  /* Grafieken */
  .chart-container {
    margin-top: 25px;
  }
  
  /* Responsiviteit */
  @media (max-width: 600px) {
    .navbar {
      flex-direction: column;
      align-items: flex-start;
    }
  
    .navbar a {
      margin: 10px 0;
    }
  }