.station-tree-panel {
  --station-tree-row-height: 22px;
  --station-tree-cell: 14px;
  --station-tree-glyph: 12px;
  --station-tree-icon-label-gap: 6px;
  --station-tree-row-padding-left: 6px;
  --station-tree-branch-line-inset: 7px;
  --station-tree-scroll-bottom-rows: 5;

  position: relative;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: var(--gap-small);
  color: var(--main-color);
}

.station-tree-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-small);
}

.station-tree-toolbar-actions {
  display: flex;
  align-items: center;
  gap: var(--panel-control-gap);
}

.station-tree-tree {
  flex: 1 1 auto;
  box-sizing: border-box;
  min-height: 0;
  height: 100%;
  overflow-x: auto;
  overflow-y: auto;
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-strong);
  padding: var(--pad-small);
  color: #fff;
}

.station-tree-tree:focus {
  outline: 1px solid rgba(255, 255, 255, 0.55);
  outline-offset: 0;
}

.station-tree-content {
  box-sizing: border-box;
  min-width: 100%;
  width: max-content;
}

.station-tree-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: max-content;
}

.station-tree-virtual-content {
  min-height: 100%;
}

.station-tree-virtual-list {
  box-sizing: border-box;
}

.station-tree-tree > .station-tree-content > .station-tree-list:not(.station-tree-virtual-list)::after {
  content: '';
  flex: 0 0 calc((var(--station-tree-row-height) + 1px) * var(--station-tree-scroll-bottom-rows));
}

.station-tree-secondary-window {
  box-sizing: border-box;
  display: block;
  width: calc(100% - var(--station-tree-secondary-offset, 0px));
  max-height: calc((var(--station-tree-row-height) + 1px) * var(--station-tree-secondary-row-limit));
  margin: 2px 0 4px var(--station-tree-secondary-offset, 0px);
  padding: 0;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: var(--radius-small);
  background: transparent;
}

.station-tree-secondary-window:focus-within {
  border-color: rgba(255, 255, 255, 0.65);
}

.station-tree-secondary-window > .station-tree-content {
  width: max-content;
  min-width: 100%;
}

.station-tree-secondary-list {
  box-sizing: border-box;
}

.station-tree-node-row {
  box-sizing: border-box;
  width: max-content;
  min-width: 100%;
  height: var(--station-tree-row-height);
  min-height: var(--station-tree-row-height);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0;
  padding: 0 0 0 var(--station-tree-row-padding-left);
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  background: transparent;
  color: #fff;
  cursor: default;
  white-space: nowrap;
  user-select: none;
}

.station-tree-node-row[role='treeitem'] {
  outline: none;
}

.station-tree-node-select-target:hover {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.16);
}

.station-tree-node-row.is-selected .station-tree-node-select-target {
  border-color: rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.12);
}

.station-tree-node-row.is-active .station-tree-node-select-target {
  border-color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.22);
}

.station-tree-node-row.is-active-tcp .station-tree-node-name {
  color: var(--color-warning);
}

.station-tree-node-row.is-drop-target {
  border-color: rgba(92, 195, 255, 0.95);
  background: rgba(92, 195, 255, 0.2);
  box-shadow: inset 3px 0 0 #5cc3ff;
}

.station-tree-node-select-target.is-draggable {
  cursor: grab;
}

.station-tree-node-select-target.is-draggable:active {
  cursor: grabbing;
}

.station-tree-node-row.is-hidden .station-tree-node-select-target,
.station-tree-node-row.is-locked .station-tree-node-select-target {
  opacity: 0.58;
}

.station-tree-node-main {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 0;
  padding-right: 0;
}

.station-tree-node-select-target {
  box-sizing: border-box;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: var(--station-tree-icon-label-gap);
  min-width: 0;
  min-height: calc(var(--station-tree-row-height) - 2px);
  padding: 1px 6px 1px 0;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  cursor: pointer;
  color: inherit;
}

.station-tree-node-actions {
  position: sticky;
  right: 0;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
  min-width: 42px;
  padding: 0 4px 0 0;
  margin-left: auto;
  background: linear-gradient(90deg, rgba(18, 24, 32, 0) 0%, rgba(18, 24, 32, 0.78) 34%, rgba(18, 24, 32, 0.96) 100%);
}

.station-tree-node-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  min-width: 18px;
  height: 18px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: background-color 0.16s ease, color 0.16s ease, opacity 0.16s ease;
}

.station-tree-node-action:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.station-tree-node-action.is-active {
  color: #fff;
}

.station-tree-node-action.is-muted {
  color: rgba(255, 255, 255, 0.48);
}

.station-tree-node-action.is-mixed {
  color: rgba(255, 204, 102, 0.92);
}

.station-tree-node-action:disabled {
  cursor: default;
}

.station-tree-node-action.is-readonly {
  color: rgba(255, 255, 255, 0.44);
}

.station-tree-node-action-icon {
  width: var(--station-tree-glyph);
  height: var(--station-tree-glyph);
  pointer-events: none;
}

.station-tree-prefix {
  display: inline-flex;
  align-items: center;
  height: var(--station-tree-cell);
}

.station-tree-guide,
.station-tree-branch {
  position: relative;
  width: var(--station-tree-cell);
  min-width: var(--station-tree-cell);
  height: var(--station-tree-cell);
}

.station-tree-guide::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--station-tree-branch-line-inset);
  border-left: 1px solid transparent;
}

.station-tree-guide.is-active::before {
  border-left-color: #fff;
}

.station-tree-branch::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--station-tree-branch-line-inset);
  border-left: 1px solid #fff;
}

.station-tree-branch::after {
  content: '';
  position: absolute;
  top: 50%;
  left: var(--station-tree-branch-line-inset);
  right: 0;
  border-top: 1px solid #fff;
}

.station-tree-branch.is-last::before {
  bottom: 50%;
}

.station-tree-node-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--station-tree-cell);
  min-width: var(--station-tree-cell);
  height: var(--station-tree-cell);
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  color: #fff;
  font-size: var(--station-tree-glyph);
  line-height: 1;
  cursor: pointer;
}

.station-tree-node-icon-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--station-tree-cell);
  min-width: var(--station-tree-cell);
  height: var(--station-tree-cell);
  color: #d8e2f1;
}

.station-tree-node-icon {
  width: var(--station-tree-glyph);
  height: var(--station-tree-glyph);
}

.station-tree-node-name {
  font-size: var(--font-sm);
  color: #fff;
}

.station-tree-node-row.is-type-robot-link .station-tree-node-icon-slot {
  color: rgba(255, 255, 255, 0.72);
}

.station-tree-node-input {
  min-width: 160px;
  height: 22px;
  padding: 0 6px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: var(--radius-small);
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: var(--font-sm);
}

.station-tree-node-input:focus {
  outline: none;
  border-color: #5cc3ff;
  box-shadow: 0 0 0 1px rgba(92, 195, 255, 0.45);
}

.station-tree-empty {
  color: var(--color-text-muted);
  font-size: var(--font-sm);
}