esengine/packages/editor-app/src/styles/SceneHierarchy.css

.scene-hierarchy {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
}

.hierarchy-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  height: var(--layout-panel-header);
  padding: 0 var(--spacing-md);
  border-bottom: 1px solid var(--color-border-default);
  background-color: var(--color-bg-elevated);
  flex-shrink: 0;
}

.hierarchy-header-icon {
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.hierarchy-header h3 {
  margin: 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 1;
  min-width: 0;
}

.scene-name-container {
  display: flex;
  align-items: center;
  padding: 1px 6px;
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  margin-left: auto;
  margin-right: var(--spacing-sm);
  transition: all var(--transition-fast);
  height: 20px;
}

.scene-name-container.clickable {
  cursor: pointer;
}

.scene-name-container.clickable:hover {
  background-color: var(--color-bg-hover);
  border-color: var(--color-primary);
}

.scene-name-container.clickable:hover .scene-name {
  color: var(--color-primary);
}

.scene-name-container.modified {
  background-color: rgba(251, 191, 36, 0.25);
  border-color: rgb(251, 191, 36);
}

.scene-name-container.modified .scene-name {
  color: rgb(251, 191, 36);
  font-weight: 600;
}

.modified-indicator {
  color: rgb(251, 191, 36);
  font-size: 8px;
  margin-left: 4px;
  animation: pulse-modified 2s ease-in-out infinite;
}

@keyframes pulse-modified {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.scene-name {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.view-mode-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
}

.mode-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  min-width: 24px;
  height: 20px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-xs);
  color: #cccccc;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mode-btn svg {
  width: 14px;
  height: 14px;
  min-width: 14px;
  min-height: 14px;
  color: inherit;
  stroke: currentColor;
}

.mode-btn:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.mode-btn.active {
  background-color: var(--color-primary);
  color: white;
}

.remote-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background-color: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.5);
  border-radius: var(--radius-sm);
  color: rgb(16, 185, 129);
  font-size: var(--font-size-xs);
  animation: pulse-green 1.5s ease-in-out infinite;
}

.hierarchy-search {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-default);
  background-color: var(--color-bg-base);
  flex-shrink: 0;
}

.hierarchy-search svg {
  color: var(--color-text-tertiary);
  flex-shrink: 0;
}

.hierarchy-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  padding: 0;
}

.hierarchy-search input::placeholder {
  color: var(--color-text-tertiary);
}

.hierarchy-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border-default);
  background-color: var(--color-bg-base);
  flex-shrink: 0;
}

.toolbar-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toolbar-btn:hover:not(:disabled) {
  background-color: var(--color-bg-hover);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.toolbar-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.toolbar-btn:disabled {
  cursor: not-allowed;
  color: #666;
}

.toolbar-btn.icon-only {
  padding: var(--spacing-xs);
  min-width: 28px;
  justify-content: center;
}

.hierarchy-content {
  flex: 1;
  overflow: auto;
  padding: var(--spacing-xs) 0;
}

.hierarchy-content::-webkit-scrollbar {
  width: 14px;
  height: 14px;
}

.hierarchy-content::-webkit-scrollbar-track {
  background: transparent;
}

.hierarchy-content::-webkit-scrollbar-thumb {
  background: rgba(121, 121, 121, 0.4);
  border-radius: 8px;
  border: 3px solid transparent;
  background-clip: padding-box;
}

.hierarchy-content::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 100, 100, 0.7);
  background-clip: padding-box;
}

.hierarchy-content::-webkit-scrollbar-corner {
  background: transparent;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4xl) var(--spacing-lg);
  text-align: center;
  color: var(--color-text-secondary);
  height: 100%;
}

.empty-icon {
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.empty-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.entity-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.entity-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
  position: relative;
}

.entity-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: transparent;
  transition: background-color var(--transition-fast);
}

.entity-item:hover {
  background-color: var(--color-bg-hover);
}

.entity-item.selected {
  background-color: var(--color-selected);
}

.entity-item.selected::before {
  background-color: var(--color-primary);
}

.entity-item.selected:hover {
  background-color: var(--color-selected-hover);
}

.entity-icon {
  color: var(--color-text-secondary);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.entity-item:hover .entity-icon,
.entity-item.selected .entity-icon {
  color: var(--color-primary);
}

.entity-name {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.entity-item.selected .entity-name {
  font-weight: var(--font-weight-medium);
}

/* Remote entity styles */
.entity-item.remote-entity {
  cursor: default;
  border-left: 2px solid rgba(16, 185, 129, 0.5);
}

.entity-item.remote-entity:hover {
  background-color: rgba(16, 185, 129, 0.05);
}

.entity-item.remote-entity::before {
  display: none;
}

.entity-item.remote-entity.disabled {
  opacity: 0.5;
}

.entity-item.remote-entity.disabled .entity-name {
  text-decoration: line-through;
  color: var(--color-text-tertiary);
}

.entity-item.dragging {
  opacity: 0.5;
}

.entity-item.drop-target {
  border-top: 2px solid var(--color-primary);
}

.entity-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px 6px;
  background-color: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.4);
  border-radius: var(--radius-sm);
  color: rgb(167, 139, 250);
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family-mono);
  flex-shrink: 0;
}

.component-count {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background-color: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.5);
  border-radius: var(--radius-full);
  color: rgb(16, 185, 129);
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
}

@keyframes pulse-green {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.05);
  }
}

/* Context menu styles */
.context-menu {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  padding: var(--spacing-xs);
  min-width: 150px;
}

.context-menu button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  text-align: left;
}

.context-menu button:hover {
  background-color: var(--color-bg-hover);
}

.context-menu-divider {
  height: 1px;
  background-color: var(--color-border-default);
  margin: var(--spacing-xs) 0;
}

.context-menu-item-with-submenu {
  position: relative;
}

.context-menu-item-with-submenu > button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  text-align: left;
}

.context-menu-item-with-submenu > button:hover {
  background-color: var(--color-bg-hover);
}

.context-menu-item-with-submenu .submenu-arrow {
  margin-left: auto;
  color: var(--color-text-tertiary);
}

.context-submenu {
  position: fixed;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  padding: var(--spacing-xs);
  min-width: 150px;
  z-index: var(--z-index-popover);
}

.context-submenu button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  text-align: left;
}

.context-submenu button:hover {
  background-color: var(--color-bg-hover);
}

.context-menu-danger {
  color: var(--color-error) !important;
}

.context-menu-danger:hover {
  background-color: rgba(244, 135, 113, 0.1) !important;
}