/* Algemene stijl */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #e9ecef;
  color: #333;
}

/* Header */
header {
  background-color: #0066cc;
  color: white;
  text-align: center;
  padding: 40px 20px;
}

header h1 {
  margin-bottom: 10px;
}

/* Main */
main {
  max-width: 900px;
  margin: auto;
  padding: 30px 20px;
}

/* Blokken */
.blok {
  background-color: white;
  padding: 25px;
  margin-bottom: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Titels */
.blok h2 {
  color: #0066cc;
}

/* Tekst */
.blok p {
  line-height: 1.7;
}

/* Lijst */
.blok ul {
  padding-left: 20px;
}

.blok li {
  margin-bottom: 10px;
}

/* Footer */
footer {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 15px;
}
.button_terug:hover {
    background: #2980b9;       /* Donkerder blauw */
    transform: translateY(-2px); /* Licht omhoog */
    box-shadow: 0 6px 10px rgba(0,0,0,0.15);
}

/* Actief effect bij klikken */
.button_terug:active {
    transform: translateY(0);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Focus effect (optioneel, voor toegankelijkheid) */
.button_terug:focus {
    outline: 2px solid #2980b9; /* lichte blauwe outline */
    outline-offset: 2px;
}
.button {
  display: inline-block;
  background-color: var(--accent-color, #0078d7);
  color: white;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.button:hover {
  background-color: #005fa3;
  transform: translateY(-2px);
}

.button_terug {
    background: #1565c0;
    color: #fff;
    border: none;
    outline: none;
    padding: 12px 18px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}