.planner-container {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  font-family: "Segoe UI", sans-serif;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

header, footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  background: rgba(255, 255, 255, 0.4);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.pools {
  display: flex;
  gap: 2rem;
  margin-bottom: 1rem;
}

.pool {
  background: rgba(255, 255, 255, 0.5);
  padding: 1rem;
  border-radius: 8px;
  flex: 1;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

#pool-colleagues, #pool-sites {
  list-style: none;
  padding: 0;
  max-height: 200px;
  overflow-y: auto;
}

.kollege, #pool-sites li {
  padding: 0.5rem;
  margin: 0.3rem 0;
  background: rgba(225, 225, 225, 0.7);
  border-radius: 6px;
  cursor: grab;
  display: flex;
  justify-content: space-between;
  transition: background-color 0.3s ease;
}

.kollege:hover, #pool-sites li:hover {
  background: rgba(0, 120, 212, 0.3);
  color: #0078d4;
}

.avail {
  font-size: 0.85em;
  color: #555;
}

.schedule table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.schedule th, .schedule td {
  border: 1px solid rgba(200, 200, 200, 0.5);
  text-align: center;
  vertical-align: top;
  padding: 0.5rem;
  min-width: 120px;
  color: #333;
}

.dropzone.drag-over {
  background: rgba(0, 120, 212, 0.2);
  border-color: #0078d4;
}

.assigned {
  display: block;
  margin: 3px auto;
  padding: 3px 6px;
  background: #0078d4;
  color: #fff;
  border-radius: 4px;
  cursor: grab;
  user-select: none;
  transition: background-color 0.3s ease;
}

.assigned:hover {
  background-color: #005a9e;
}

button, input[type="text"] {
  font-family: "Segoe UI", sans-serif;
  border-radius: 6px;
  border: 1px solid #0078d4;
  padding: 0.4rem 0.8rem;
  background: rgba(0, 120, 212, 0.1);
  color: #0078d4;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover, input[type="text"]:focus {
  background: rgba(0, 120, 212, 0.3);
  outline: none;
}

input[type="text"] {
  border-radius: 6px;
  border: 1px solid #ccc;
  color: #333;
}

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

button.remove-assignment, button.remove-pool {
  background: transparent;
  border: none;
  color: red;
  font-weight: bold;
  font-size: 1.2em;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  user-select: none;
  transition: color 0.3s ease;
}

button.remove-assignment:hover, button.remove-pool:hover {
  color: darkred;
}

/* Print-Styles */
@media print {
  body * { visibility: hidden; }
  .schedule, .schedule * { visibility: visible; }
  .schedule { position: absolute; top:0; left:0; width:100%; }
}