/* ── Taxonomy cascade component (Epic 13) ────────────────────────── */

.taxonomy-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md, 1rem);
  width: 100%;
}

/* Each searchable select wrapper */
.taxonomy-group__field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.taxonomy-group__label {
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: 500;
  color: var(--color-text-primary, #111827);
}

.taxonomy-group__label::after {
  content: " *";
  color: var(--color-danger, #DC2626);
}

/* Custom combobox container */
.taxonomy-combo {
  position: relative;
}

.taxonomy-combo__input {
  width: 100%;
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  border: 1px solid var(--color-border, #D1D5DB);
  border-radius: var(--radius-md, 0.375rem);
  font-size: var(--font-size-base, 1rem);
  color: var(--color-text-primary, #111827);
  background: var(--color-surface, #fff) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 0.75rem center;
  background-size: 12px;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color 0.15s ease;
  box-sizing: border-box;
}

.taxonomy-combo__input:focus {
  outline: 2px solid var(--color-primary, #2563EB);
  outline-offset: 1px;
  border-color: var(--color-primary, #2563EB);
}

/* Disabled state */
.taxonomy-combo__input:disabled,
.taxonomy-combo__input[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--color-surface-disabled, #F3F4F6);
}

/* Invalid / failed hydration state */
.taxonomy-combo__input.is-invalid {
  border: 2px solid var(--color-danger, #DC2626);
  background-color: var(--color-danger-light, rgba(220, 38, 38, 0.05));
}

.taxonomy-combo__input.is-invalid:focus {
  outline-color: var(--color-danger, #DC2626);
}

/* Dropdown listbox */
.taxonomy-combo__listbox {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #D1D5DB);
  border-radius: var(--radius-md, 0.375rem);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  max-height: 240px;
  overflow-y: auto;
  list-style: none;
  margin: 0;
  padding: 0.25rem 0;
}

.taxonomy-combo__listbox[hidden] {
  display: none;
}

.taxonomy-combo__option {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-size: var(--font-size-base, 1rem);
  color: var(--color-text-primary, #111827);
}

.taxonomy-combo__option:hover,
.taxonomy-combo__option[aria-selected="true"] {
  background-color: var(--color-primary-light, #EFF6FF);
  color: var(--color-primary, #2563EB);
}

.taxonomy-combo__option--empty {
  color: var(--color-text-muted, #6B7280);
  font-style: italic;
  cursor: default;
}

/* Guidance copy */
.taxonomy-guidance {
  margin: 0 0 0.625rem 0;
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-text-muted, #6B7280);
  line-height: 1.4;
}

/* Custom free-text option row */
.taxonomy-combo__option--custom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  border-top: 1px solid var(--color-border, #D1D5DB);
  margin-top: 0.125rem;
  padding-top: 0.5rem;
  color: var(--color-text-secondary, #374151);
  font-style: italic;
}

.taxonomy-combo__option--custom:hover,
.taxonomy-combo__option--custom:focus {
  background-color: var(--color-surface-hover, #F9FAFB);
  color: var(--color-text-primary, #111827);
}

.taxonomy-combo__custom-badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full, 9999px);
  background: var(--color-surface-alt, #F3F4F6);
  color: var(--color-text-muted, #6B7280);
}

/* Resume hydration alert */
.taxonomy-hydration-alert {
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  background-color: var(--color-danger-light, rgba(220, 38, 38, 0.08));
  border-left: 3px solid var(--color-danger, #DC2626);
  border-radius: 0 var(--radius-sm, 0.25rem) var(--radius-sm, 0.25rem) 0;
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-danger, #DC2626);
}

/* Responsive: stack on very small screens */
@media (max-width: 480px) {
  .taxonomy-group {
    grid-template-columns: 1fr;
  }
}