html, body {
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
}

.main-container {
  flex: 1 0 auto;
}

/* --- Vaste transparante footer --- */
.site-footer {
  flex-shrink: 0;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(6px);
  border-top: 2px solid #ca0c0c;
  color: #ca0c0c;
  text-align: center;
  padding: 14px 10px;
  font-size: 1rem;
  font-family: 'Segoe UI', sans-serif;
  z-index: 1000;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.zuil-container {
  max-width: 600px;
  margin: 80px auto;
  background: rgba(255,255,255,0.9);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0,0,0,0.2);
  text-align: center;
  font-family: 'Segoe UI', sans-serif;
}

.zuil-container h1 {
  font-size: 2.2em;
  margin-bottom: 20px;
}

.filter-form label,
.relatie-form label {
  font-size: 1.2em;
  display: block;
  margin-bottom: 8px;
}

input[type="text"],
input[type="date"] {
  width: 100%;
  font-size: 1.3em;
  padding: 10px;
  border: 2px solid #ccc;
  border-radius: 6px;
  margin-bottom: 15px;
}

.btn {
  font-size: 1.4em;
  padding: 12px 25px;
  border: none;
  border-radius: 6px;
  margin: 5px;
  cursor: pointer;
  transition: 0.3s;
  color: #fff;
}

.btn:hover { opacity: 0.9; }

.btn.orange { background-color: #f09027; }
.btn.green  { background-color: #2e8b57; }
.btn.blue   { background-color: #007bff; }

.alert {
  background-color: #ffcccc;
  padding: 12px;
  border-radius: 6px;
  margin-bottom: 15px;
  font-size: 1.1em;
}

.planning-info {
  margin-top: 30px;
  padding: 20px;
  background: rgba(255,255,255,0.8);
  border-radius: 10px;
  text-align: left;
}

.planning-info h2 {
  font-size: 1.5em;
  color: #2e8b57;
  margin-bottom: 10px;
}

.planning-info ul {
  list-style: none;
  padding: 0;
}

.planning-info li {
  font-size: 1.2em;
  margin-bottom: 6px;
  padding-left: 10px;
  border-left: 4px solid #f09027;
}

.akkoord-veld {
  margin: 25px 0 10px 0;
  text-align: left;
}

.akkoord-label {
  font-size: 1.3em;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #333;
}

.akkoord-label input[type="checkbox"] {
  transform: scale(1.5);
  accent-color: #2e8b57;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.alert {
  background-color: #e8ffe8;
  border-left: 6px solid #2e8b57;
  color: #205c2c;
  font-size: 1.3em;
  font-weight: 600;
  padding: 12px;
  margin-bottom: 20px;
  border-radius: 8px;
}

/* ===== Aanmeldzuil invoervelden ===== */

.relatie-form input[type="text"],
.relatie-form input[type="date"] {
  background-color: #f4fff4;         /* zacht lichtgroen */
  border: 1px solid #b6d7a8;         /* subtiel groene rand */
  border-radius: 6px;
  font-size: 1.2em;
  padding: 10px;
  width: 100%;
  color: #222;
  transition: background-color 0.3s, border-color 0.3s;
}

/* focus-effect: iets donkerder groen zodat het veld actief aanvoelt */
.relatie-form input[type="text"],
.relatie-form input[type="tel"],
.relatie-form input[type="email"],
.relatie-form input[type="date"] {
  background-color: #e8fce8; /* zacht lichtgroen */
  border: 1px solid #ccc;
  border-radius: 6px;
  padding: 10px;
  width: 100%;
  font-size: 1.1em;
  margin-bottom: 12px;
}

/* label-opmaak */
.relatie-form label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: #2e8b57;
}

/* extra ruimte tussen velden */
.relatie-form .field {
  margin-bottom: 18px;
}

/* checkbox en knoppen consistent */
.akkoord-veld {
  margin: 25px 0 10px 0;
}
.akkoord-label {
  font-size: 1.2em;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #333;
}
.akkoord-label input[type="checkbox"] {
  transform: scale(1.5);
  accent-color: #2e8b57;
  cursor: pointer;
}

/* uitgeschakelde knop visueel dimmen */
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}