/* styles.css */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-dark: #1e1e1e;
  --bg-panel: #252526;
  --bg-hover: #2a2d2e;
  --bg-selected: #094771;
  --border-color: #3c3c3c;
  --text-primary: #ccc;
  --text-secondary: #858585;
  --accent: #0078d4;
  --canvas-bg: #1a1a2e;
  --grid-color: #2a2a4a;
}

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, sans-serif;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.toolbar {
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items:  center;
  gap: 8px;
  height: 48px;
  padding: 0 12px;
}

.toolbar-btn {
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  background: none;
  border: 1px solid #0000;
  border-radius: 4px;
  align-items:  center;
  gap: 6px;
  padding: 8px 12px;
  transition: all .15s;
  font-size: 13px;
}

.toolbar-btn:hover {
  background: var(--bg-hover);
}

.toolbar-btn.active {
  background: var(--accent);
  border-color: var(--accent);
}

.toolbar-divider {
  background: var(--border-color);
  width: 1px;
  height: 24px;
  margin: 0 8px;
}

.toolbar-info {
  color: var(--text-secondary);
  font-size: 12px;
}

.toolbar-spacer {
  flex: 1;
}

.toolbar-btn.disabled, .toolbar-btn:disabled {
  opacity: .4;
  cursor: not-allowed;
}

.toolbar-btn:disabled:hover {
  background: none;
}

.toolbar-history-container {
  position: relative;
}

.history-dropdown {
  position: absolute;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  overflow: hidden;
  z-index: 1000;
  border-radius: 6px;
  min-width: 200px;
  max-height: 300px;
  margin-top: 4px;
  top: 100%;
  right: 0;
  box-shadow: 0 4px 12px #0000004d;
}

.history-header {
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
}

.history-list {
  overflow-y: auto;
  max-height: 250px;
}

.history-section-label {
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 6px 12px 4px;
  font-size: 10px;
}

.history-item {
  cursor: pointer;
  padding: 6px 12px;
  transition: background .1s;
  font-size: 12px;
}

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

.history-item.current {
  background: var(--accent);
  color: #fff;
  cursor: default;
  font-weight: 500;
}

.history-item.past {
  color: var(--text-primary);
}

.history-item.future {
  color: var(--text-secondary);
  font-style: italic;
}

.history-empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 16px 12px;
  font-size: 12px;
}

.history-hint {
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  text-align: center;
  padding: 8px 12px;
  font-size: 10px;
}

.main-layout {
  display: flex;
  overflow: hidden;
  flex: 1;
}

.panel {
  background: var(--bg-panel);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.panel-left {
  width: 240px;
  min-width: 200px;
}

.panel-right {
  border-right: none;
  border-left: 1px solid var(--border-color);
  width: 280px;
  min-width: 240px;
}

.panel-header {
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 600;
}

.panel-content {
  overflow-y: auto;
  flex: 1;
}

.tree-item {
  display: flex;
  cursor: pointer;
  border-left: 2px solid #0000;
  align-items:  center;
  padding: 6px 16px;
  transition: all .1s;
  font-size: 13px;
}

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

.tree-item.selected {
  background: var(--bg-selected);
  border-left-color: var(--accent);
}

.tree-item.dragging {
  opacity: .5;
}

.tree-item.drop-inside {
  outline: 1px solid var(--accent);
  background: #4a90d933;
}

.tree-item-icon {
  display: flex;
  justify-content: center;
  align-items:  center;
  width: 16px;
  height: 16px;
  margin-right: 8px;
  font-size: 10px;
}

.tree-item-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.tree-item-toggle {
  display: flex;
  opacity: .5;
  justify-content: center;
  align-items:  center;
  width: 16px;
  height: 16px;
  margin-right: 4px;
}

.tree-children {
  padding-left: 16px;
}

.inspector-section {
  border-bottom: 1px solid var(--border-color);
  padding: 16px;
}

.inspector-section-title {
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-size: 11px;
  font-weight: 600;
}

.inspector-row {
  display: flex;
  align-items:  center;
  margin-bottom: 8px;
}

.inspector-label {
  color: var(--text-secondary);
  width: 60px;
  font-size: 12px;
}

.inspector-input {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 4px;
  flex: 1;
  padding: 6px 8px;
  font-size: 12px;
}

.inspector-input:focus {
  outline: none;
  border-color: var(--accent);
}

.inspector-input-group {
  display: flex;
  flex: 1;
  gap: 8px;
}

.inspector-input-group .inspector-input {
  flex: 1;
}

.inspector-color {
  border: 1px solid var(--border-color);
  cursor: pointer;
  border-radius: 4px;
  width: 32px;
  height: 32px;
}

.inspector-color-input {
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.canvas-container {
  position: relative;
  overflow: hidden;
  background: var(--canvas-bg);
  flex: 1;
}

.canvas-viewport {
  position: absolute;
  cursor: grab;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.canvas-viewport.panning {
  cursor: grabbing;
}

.canvas-viewport.drawing {
  cursor: crosshair;
}

.canvas-grid {
  position: absolute;
  pointer-events: none;
  top: 0;
  left: 0;
}

.canvas-nodes {
  position: absolute;
  top: 0;
  left: 0;
}

.canvas-node {
  position: absolute;
  cursor: move;
  user-select: none;
}

.canvas-node.selected {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.canvas-node.selected:after {
  content: "";
  position: absolute;
  border: 1px dashed var(--accent);
  pointer-events: none;
  inset: -4px;
}

.resize-handle {
  position: absolute;
  border: 1px solid var(--accent);
  background: #fff;
  border-radius: 1px;
  width: 8px;
  height: 8px;
}

.resize-handle.nw {
  cursor: nw-resize;
  top: -4px;
  left: -4px;
}

.resize-handle.n {
  cursor: n-resize;
  margin-left: -4px;
  top: -4px;
  left: 50%;
}

.resize-handle.ne {
  cursor: ne-resize;
  top: -4px;
  right: -4px;
}

.resize-handle.e {
  cursor: e-resize;
  margin-top: -4px;
  top: 50%;
  right: -4px;
}

.resize-handle.se {
  cursor: se-resize;
  bottom: -4px;
  right: -4px;
}

.resize-handle.s {
  cursor: s-resize;
  margin-left: -4px;
  bottom: -4px;
  left: 50%;
}

.resize-handle.sw {
  cursor: sw-resize;
  bottom: -4px;
  left: -4px;
}

.resize-handle.w {
  cursor: w-resize;
  margin-top: -4px;
  top: 50%;
  left: -4px;
}

.shape-rectangle {
  border-radius: 2px;
}

.shape-ellipse {
  border-radius: 50%;
}

.shape-text {
  display: flex;
  overflow: hidden;
  justify-content: center;
  align-items:  center;
  font-size: 14px;
}

.zoom-indicator {
  position: absolute;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 12px;
  bottom: 16px;
  right: 16px;
}

.debug-panel {
  position: absolute;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  opacity: .8;
  border-radius: 4px;
  padding: 8px 12px;
  font-family: monospace;
  font-size: 11px;
  bottom: 50px;
  right: 16px;
}

.minimap {
  position: absolute;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  overflow: hidden;
  border-radius: 4px;
  width: 150px;
  height: 100px;
  bottom: 16px;
  left: 16px;
}

.minimap-viewport {
  position: absolute;
  border: 1px solid var(--accent);
  background: #0078d41a;
}

.minimap-node {
  position: absolute;
  background: var(--text-secondary);
  opacity: .5;
}

.empty-state {
  display: flex;
  color: var(--text-secondary);
  flex-direction: column;
  justify-content: center;
  align-items:  center;
  height: 100%;
  font-size: 13px;
}

.workspace-section {
  border-bottom: 1px solid var(--border-color);
}

.workspace-header {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  justify-content: space-between;
  align-items:  center;
  padding: 10px 16px;
  font-size: 12px;
}

.workspace-name {
  display: flex;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  align-items:  center;
  gap: 6px;
  font-weight: 500;
}

.workspace-actions {
  display: flex;
  gap: 4px;
}

.workspace-btn {
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  background: none;
  border: none;
  border-radius: 4px;
  justify-content: center;
  align-items:  center;
  padding: 4px;
}

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

.workspace-documents {
  overflow-y: auto;
  max-height: 200px;
}

.workspace-empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 16px;
  font-size: 12px;
}

.workspace-empty-btn {
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  margin-top: 12px;
  padding: 8px 16px;
  font-size: 12px;
}

.workspace-empty-btn:hover {
  opacity: .9;
}

.workspace-empty-docs {
  color: var(--text-secondary);
  padding: 12px 16px;
  font-size: 12px;
  font-style: italic;
}

.workspace-loading {
  color: var(--text-secondary);
  padding: 12px 16px;
  font-size: 12px;
}

.document-item {
  display: flex;
  cursor: pointer;
  border-left: 2px solid #0000;
  align-items:  center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 13px;
}

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

.document-item.active {
  background: var(--bg-selected);
  border-left-color: var(--accent);
}

.document-item-icon {
  opacity: .6;
  display: flex;
  align-items:  center;
}

.document-item-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.layers-section {
  display: flex;
  overflow: hidden;
  flex-direction: column;
  flex: 1;
}

.layers-section .panel-content {
  overflow-y: auto;
  flex: 1;
}

.empty-state-icon {
  opacity: .5;
  margin-bottom: 16px;
  font-size: 48px;
}

.selection-box {
  position: absolute;
  border: 1px solid var(--accent);
  pointer-events: none;
  background: #0078d41a;
}

.context-menu {
  position: fixed;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  z-index: 1000;
  border-radius: 6px;
  min-width: 180px;
  padding: 4px 0;
  box-shadow: 0 4px 12px #0000004d;
}

.context-menu-item {
  cursor: pointer;
  display: flex;
  align-items:  center;
  gap: 12px;
  padding: 8px 16px;
  font-size: 13px;
}

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

.context-menu-item.danger {
  color: #f44336;
}

.context-menu-divider {
  background: var(--border-color);
  height: 1px;
  margin: 4px 0;
}

.context-menu-shortcut {
  color: var(--text-secondary);
  margin-left: auto;
  font-size: 11px;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}