/* Subtle rounding and focus styles */
.card, .btn, .form-control, .form-select, .alert { border-radius: 0.75rem; }
.card {
  border: 1px solid var(--bs-border-color, #dee2e6);
}
.card > .card-header:first-child {
  border-top-left-radius: 0.75rem;
  border-top-right-radius: 0.75rem;
}
.form-control:focus, .form-select:focus { box-shadow: 0 0 0 .25rem rgba(13,110,253,.15); }
details > summary { cursor: pointer; }
.folder-summary { display:flex; align-items:center; gap:.5rem; }
.nested-structures {
  border: 0;
  box-shadow: none;
  margin-top: 0.25rem;
}
.nested-structures .list-group-item {
  border: 0;
  padding-left: 1.75rem;
  border-radius: 0;
}
.nested-structures .list-group-item + .list-group-item {
  border-top: 1px solid var(--bs-border-color, #dee2e6);
}