body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f7f7f7;
}

#container {
  display: flex;
  height: 100vh;
}

#tree {
  width: 300px;
  overflow-y: auto;
  border-right: 1px solid #ccc;
  background: #fff;
  padding: 10px;
}

#tree div {
  cursor: pointer;
  padding: 4px 6px;
}

#tree .level { padding-left: 10px; }
#tree .section { padding-left: 20px; }
#tree .task { padding-left: 30px; }

#tree div:hover {
  background: #eee;
}

#details {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
  color: #fff;
}

.badge.green { background: #28a745; }
.badge.red { background: #dc3545; }
.badge.amber { background: #ffc107; color: #000; }

table {
  border-collapse: collapse;
  width: 100%;
  margin-top: 15px;
}

table th, table td {
  border: 1px solid #ddd;
  padding: 6px;
}