uzdb/frontend/src/components/Sidebar/ConnectionPanel.css

/**
 * ConnectionPanel Component Styles
 */

.connection-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: var(--sidebar-width);
  min-width: var(--sidebar-min-width);
  max-width: var(--sidebar-max-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.connection-panel-collapsed {
  width: 48px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: var(--space-2);
}

/* Header */
.connection-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-tertiary);
  flex-shrink: 0;
}

.connection-panel-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Connection List */
.connection-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2) 0;
}

.empty-state {
  padding: var(--space-6);
  text-align: center;
  color: var(--text-muted);
}

.empty-state p {
  font-size: var(--text-sm);
}

/* Connection Item */
.connection-item {
  cursor: pointer;
  user-select: none;
}

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

.connection-item.selected {
  background-color: rgba(59, 130, 246, 0.1);
}

.connection-item.active {
  background-color: rgba(59, 130, 246, 0.15);
  box-shadow: inset 2px 0 0 var(--primary);
}

.connection-header {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  gap: var(--space-2);
}

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

.db-type-icon {
  font-size: var(--text-sm);
  margin-left: var(--space-1);
}

/* Tree Node */
.tree-node {
  display: flex;
  flex-direction: column;
}

.tree-node-content {
  display: flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  gap: var(--space-1);
  cursor: pointer;
  transition: background-color var(--transition-fast) var(--ease-in-out);
}

.tree-node-content:hover {
  background-color: var(--bg-tertiary);
}

.tree-node-content.active {
  background-color: rgba(59, 130, 246, 0.1);
}

.tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 10px;
  color: var(--text-secondary);
  transition: transform var(--transition-fast) var(--ease-in-out);
  flex-shrink: 0;
}

.tree-toggle.expanded {
  transform: rotate(90deg);
}

.tree-toggle-placeholder {
  width: 16px;
  flex-shrink: 0;
}

.tree-icon {
  font-size: var(--text-sm);
  margin-right: var(--space-1);
}

.tree-label {
  font-size: var(--text-sm);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-node-children {
  display: flex;
  flex-direction: column;
}

/* Footer */
.connection-panel-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border);
  background-color: var(--bg-tertiary);
  flex-shrink: 0;
}

.btn-new-connection {
  width: 100%;
  justify-content: center;
}

/* Collapsed state */
.collapsed-connections {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: 100%;
  align-items: center;
}

.collapsed-connection-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast) var(--ease-in-out);
}

.collapsed-connection-item:hover {
  background-color: var(--bg-tertiary);
}

/* Context Menu (placeholder for future implementation) */
.connection-context-menu {
  position: fixed;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2) 0;
  min-width: 200px;
  z-index: 1000;
}

.context-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-primary);
  transition: background-color var(--transition-fast) var(--ease-in-out);
}

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

.context-menu-separator {
  height: 1px;
  background-color: var(--border);
  margin: var(--space-2) 0;
}

/* Connection action buttons (edit/disconnect/delete) */
.connection-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
  opacity: 0;
  transition: opacity 0.15s;
}

.connection-item:hover .connection-actions {
  opacity: 1;
}

.connection-action-btn {
  padding: 3px 4px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1;
}

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

.connection-action-btn.danger:hover {
  color: #ef4444;
}

/* Connecting label */
.connecting-label {
  font-size: 11px;
  color: var(--text-muted);
  font-style: italic;
  white-space: nowrap;
}

/* Connection error message */
.connection-error-msg {
  padding: 4px var(--space-4) 6px calc(var(--space-4) + 24px);
  font-size: 11px;
  color: #f87171;
  line-height: 1.4;
  word-break: break-word;
}

/* Connection stats (schema/table count summary) */
.connection-stats {
  padding: 2px var(--space-4) 6px calc(var(--space-4) + 24px);
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Tree count badge */
.tree-count-badge {
  margin-left: auto;
  padding: 1px 6px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 9px;
  line-height: 1.6;
  flex-shrink: 0;
}