/* SampleSelector Component Styles - RFA Design */

.mint-sample-selector {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  height: 100%;
  /* No padding/background/border - let parent container provide styling */
}

/* Select-all header row (7c): a table header, not a button */
.mint-sample-selector__select-all {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  min-height: 2.25rem;
  padding: 0 0.75rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  cursor: pointer;
}

/* Over the group tree the header takes the tree's columns: its checkbox sits over the
   group checkboxes (header pad + chevron + gap) and its count over the group counts
   (scroll gutter + header pad + delete button + gap). */
.mint-sample-selector__select-all--grouped {
  padding-left: 1.875rem;
  padding-right: 2.375rem;
}

.mint-sample-selector__select-all-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.mint-sample-selector__select-all-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

/* Checkboxes are BaseCheckbox sm; only keep them from shrinking in flex rows. */
.mint-sample-selector__checkbox {
  flex-shrink: 0;
}

/* Action Buttons Row */
.mint-sample-selector__actions {
  position: relative;
}

.mint-sample-selector__actions-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.375rem;
  min-width: 0;
}

/* Layout only; BaseButton sm owns size, padding and type. */
.mint-sample-selector__action-btn {
  width: 100%;
  min-width: 0; /* Allow labels to ellipsize inside tight containers */
}

.mint-sample-selector__action-btn--reset {
  width: auto;
}

.mint-sample-selector__action-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.mint-sample-selector__action-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Grouped View */
.mint-sample-selector__grouped {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: 0.5rem;
}

.mint-sample-selector__groups-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mint-sample-selector__groups-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.mint-sample-selector__groups-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.mint-sample-selector__expand-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.mint-sample-selector__expand-btn:hover {
  background-color: var(--bg-hover);
}

.mint-sample-selector__expand-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.mint-sample-selector__expand-icon {
  width: 0.875rem;
  height: 0.875rem;
}

/* Shared scrollbar styles */
.mint-sample-selector__tree,
.mint-sample-selector__flat-list {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

.mint-sample-selector__tree::-webkit-scrollbar,
.mint-sample-selector__flat-list::-webkit-scrollbar {
  width: 6px;
}

.mint-sample-selector__tree::-webkit-scrollbar-track,
.mint-sample-selector__flat-list::-webkit-scrollbar-track {
  background: transparent;
}

.mint-sample-selector__tree::-webkit-scrollbar-thumb,
.mint-sample-selector__flat-list::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}

.mint-sample-selector__tree::-webkit-scrollbar-thumb:hover,
.mint-sample-selector__flat-list::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-hover);
}

/* Tree View */
.mint-sample-selector__tree {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding-right: 0.25rem;
}

/* Major Group */
.mint-sample-selector__major-group {
  margin-bottom: 0.25rem;
}

.mint-sample-selector__major-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: grab;
  transition: background-color 0.15s ease, box-shadow 0.12s ease, opacity 0.12s ease;
}

.mint-sample-selector__major-header:active {
  cursor: grabbing;
}

.mint-sample-selector__major-header:hover {
  background-color: var(--bg-hover);
}

.mint-sample-selector__major-header:hover .mint-sample-selector__delete-btn--hidden {
  opacity: 1;
}

.mint-sample-selector__major-name {
  flex: 1;
  min-width: 0;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Chevron */
.mint-sample-selector__chevron {
  width: 0.875rem;
  height: 0.875rem;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.mint-sample-selector__chevron--small {
  width: 0.75rem;
  height: 0.75rem;
}

.mint-sample-selector__chevron--open {
  transform: rotate(90deg);
}

/* Color Dot */
/* Group color chip (7c) */
.mint-sample-selector__color-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 2px;
  flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.mint-sample-selector__color-dot--large {
  width: 0.625rem;
  height: 0.625rem;
}

.mint-sample-selector__color-dot--clickable {
  cursor: pointer;
  transition: transform 0.15s ease;
  border: none;
  padding: 0;
  background: none;
}

.mint-sample-selector__color-dot--clickable:hover {
  transform: scale(1.25);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08), 0 0 0 3px rgba(0, 0, 0, 0.06);
}

.mint-sample-selector__color-dot--clickable:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Count Badge */
/* Selected / total, mono (7c) */
.mint-sample-selector__count-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Delete Button */
.mint-sample-selector__delete-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.125rem;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--mint-error);
  cursor: pointer;
  transition: all 0.15s ease;
}

.mint-sample-selector__delete-btn:hover {
  background-color: var(--mint-error-bg);
  color: var(--mint-error);
}

/* Reveal the hover-hidden delete button when reached by keyboard, and ring it. */
.mint-sample-selector__delete-btn:focus-visible {
  outline: none;
  opacity: 1;
  box-shadow: var(--focus-ring);
}

.mint-sample-selector__delete-btn--hidden {
  opacity: 0;
}

.mint-sample-selector__delete-btn svg {
  width: 0.875rem;
  height: 0.875rem;
}

/* Sub Groups */
.mint-sample-selector__sub-groups {
  margin-left: 1rem;
  padding-left: 0.75rem;
  border-left: 2px solid;
}

.mint-sample-selector__sub-group {
  margin-bottom: 0.125rem;
  border-radius: var(--radius);
  transition: background-color 0.15s ease, box-shadow 0.15s ease;
}

.mint-sample-selector__sub-group--drag-over {
  background-color: var(--color-primary-soft);
  box-shadow: inset 0 0 0 2px var(--color-primary);
}

.mint-sample-selector__sub-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: grab;
  transition: background-color 0.15s ease, box-shadow 0.12s ease, opacity 0.12s ease;
}

.mint-sample-selector__sub-header:active {
  cursor: grabbing;
}

.mint-sample-selector__sub-header:hover {
  background-color: var(--bg-hover);
}

.mint-sample-selector__sub-header:hover .mint-sample-selector__delete-btn--hidden {
  opacity: 1;
}

.mint-sample-selector__sub-name {
  flex: 1;
  min-width: 0;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Samples */
.mint-sample-selector__samples {
  margin-left: 1rem;
  padding-left: 0.75rem;
  border-left: 2px solid;
}

.mint-sample-selector__sample {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease, opacity 0.15s ease;
  cursor: grab;
}

.mint-sample-selector__sample:hover {
  background-color: var(--bg-hover);
}

.mint-sample-selector__sample:hover .mint-sample-selector__remove-btn {
  opacity: 1;
}

.mint-sample-selector__sample:hover .mint-sample-selector__drag-handle {
  opacity: 1;
}

.mint-sample-selector__sample--dragging {
  opacity: 0.5;
  cursor: grabbing;
}

/* Drag Handle */
.mint-sample-selector__drag-handle {
  width: 0.875rem;
  height: 0.875rem;
  flex-shrink: 0;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity 0.15s ease;
  cursor: grab;
}

.mint-sample-selector__sample-name {
  flex: 1;
  min-width: 0;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mint-sample-selector__remove-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.125rem;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--mint-warning);
  cursor: pointer;
  opacity: 0;
  transition: all 0.15s ease;
}

.mint-sample-selector__remove-btn:hover {
  background-color: var(--mint-warning-bg);
  color: var(--mint-warning);
}

.mint-sample-selector__remove-btn svg {
  width: 0.625rem;
  height: 0.625rem;
}

/* Inline hint shown inside the grouped/flat sub-lists */
.mint-sample-selector__hint {
  text-align: center;
  padding: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Empty / loading / error placeholder host (content comes from EmptyState) */
.mint-sample-selector__state {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Ungrouped Section */
.mint-sample-selector__ungrouped {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.mint-sample-selector__ungrouped-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.mint-sample-selector__ungrouped-header:hover {
  background-color: var(--bg-hover);
}

.mint-sample-selector__ungrouped-label {
  flex: 1;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}

.mint-sample-selector__ungrouped-count {
  /* Joins the group count column: the groups' delete button + gap and the tree's scroll gutter. */
  margin-right: 1.875rem;
  font-size: 0.6875rem;
  padding: 0.125rem 0.375rem;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: 9999px;
  font-variant-numeric: tabular-nums;
}

.mint-sample-selector__ungrouped-list {
  margin-left: 1.25rem;
  padding-left: 0.75rem;
  border-left: 2px solid var(--border-color);
}

/* New Group Input */
.mint-sample-selector__new-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.mint-sample-selector__new-group-input {
  flex: 1;
  min-width: 0;
}

.mint-sample-selector__new-group-btn {
  flex-shrink: 0;
}

/* Hidden color input */
.mint-sample-selector__color-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Flat View */
.mint-sample-selector__flat {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: 0.5rem;
}

.mint-sample-selector__search {
  position: relative;
}

.mint-sample-selector__search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1rem;
  height: 1rem;
  color: var(--text-muted);
  pointer-events: none;
}

.mint-sample-selector__search-input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.5rem 0.75rem 0.5rem 2.25rem;
  font-size: 0.875rem;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s ease;
}

.mint-sample-selector__search-input:focus-visible {
  box-shadow: var(--focus-ring);
  border-color: var(--color-primary);
}

.mint-sample-selector__search-input::placeholder {
  color: var(--text-muted);
}

.mint-sample-selector__flat-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.mint-sample-selector__flat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
}

.mint-sample-selector__flat-item:hover {
  background-color: var(--bg-hover);
}

.mint-sample-selector__flat-name {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mint-collapse-enter-active {
  transition: all 0.2s ease-out;
  overflow: hidden;
}

.mint-collapse-leave-active {
  transition: all 0.15s ease-in;
  overflow: hidden;
}

.mint-collapse-enter-from,
.mint-collapse-leave-to {
  opacity: 0;
  max-height: 0;
}

.mint-collapse-enter-to,
.mint-collapse-leave-from {
  opacity: 1;
  max-height: 500px;
}

/* Group reorder: source row + drop indicators */
.mint-sample-selector__header--dragging {
  opacity: 0.5;
  cursor: grabbing;
}

.mint-sample-selector__header--drag-over-before {
  box-shadow: inset 0 2px 0 0 var(--color-primary);
}

.mint-sample-selector__header--drag-over-after {
  box-shadow: inset 0 -2px 0 0 var(--color-primary);
}

@media (prefers-reduced-motion: reduce) {
  .mint-sample-selector__chevron {
    transition: none;
  }

  .mint-sample-selector__color-dot--clickable {
    transition: none;
  }

  .mint-sample-selector__major-header,
  .mint-sample-selector__sub-header {
    transition: none;
  }

  .mint-collapse-enter-active,
  .mint-collapse-leave-active {
    transition: none;
  }
}