body {
  font-family: Arial, sans-serif;
  background-color: #f5f4fb;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1200px;
  margin: 30px auto;
  background-color: white;
  padding: 30px;
  border-radius: 10px;
  border: 1px solid #ccc;
}

h1, h2 {
  text-align: center;
  color: #3d9c3d;
  margin-top: 10px;
}

button {
  background-color: #3d9c3d;
  color: white;
  border: none;
  padding: 10px 16px;
  margin: 10px 5px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background-color: #368336;
}

#faculty-input input[type="text"] {
  padding: 8px;
  width: 300px;
  margin-right: 10px;
  margin-bottom: 10px;
}

#faculty-input select {
  padding: 8px;
  width: 300px;
  margin-bottom: 10px;
}

#timetable {
  background-color: #f8f8f8;
  padding: 15px;
  border-radius: 10px;
  margin-top: 20px;
  border: 1px solid #cce5cc;
  color: #333;
}

#tree-visualization {
  margin-top: 20px;
  text-align: center;
}

#table-container {
  margin-top: 30px;
}

#schedule-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

#schedule-table th,
#schedule-table td {
  border: 1px solid #4CAF50;
  padding: 10px;
  text-align: center;
}

#schedule-table th {
  background-color: #4CAF50;
  color: white;
}