body {
  margin: 0;
  font-family: Arial, sans-serif;
  height: 100vh;
  display: flex;
  flex-direction: column;
}
.app-container {
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Menu bar styles */
.menu-bar {
  display: flex;
  background: #333;
  color: #fff;
  padding: 0 10px;
  height: 32px;
  line-height: 32px;
  font-size: 14px;
  position: relative;
  user-select: none;
  z-index: 1000;
}
.menu-item {
  position: relative;
  padding: 0 12px;
  cursor: pointer;
}
.menu-item:hover {
  background: #444;
}
.submenu {
  display: none;
  position: absolute;
  top: 32px;
  left: 0;
  background: #fff;
  color: #333;
  border: 1px solid #ddd;
  min-width: 160px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  z-index: 1000;
}
.submenu .submenu-item {
  padding: 6px 12px;
  cursor: pointer;
}
.submenu .submenu-item:hover {
  background: #f0f0f0;
}
.menu-item:hover .submenu {
  display: block;
}

/* Hide elements when toggled off */
.hidden {
  display: none !important;
}

/* Status indicator styles */
.node.planned {
  border-color: #aaa;
}
.node.in-progress {
  border-color: #3498db;
}
.node.complete {
  border-color: #2ecc71;
}

/* Z-index adjustments: edges behind nodes but visible */
#edges-layer, #edgeCanvas {
  z-index: 5;
}
.node {
  z-index: 10;
}

/* Inspector tabs styles */
.inspector-tabs {
  display: flex;
  margin-bottom: 8px;
}
.inspector-tab {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid #ddd;
  background: #f7f7f7;
  cursor: pointer;
  border-bottom: none;
  text-align: center;
}
.inspector-tab.active {
  background: #fff;
  font-weight: bold;
}
.inspector-section {
  padding: 4px 0;
}
.sidebar {
  width: 220px;
  background: #f5f5f5;
  border-right: 1px solid #ddd;
  box-sizing: border-box;
  padding: 10px;
  overflow-y: auto;
}
.sidebar h2 {
  font-size: 18px;
  margin-top: 0;
}
.palette-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.palette-item {
  padding: 6px 8px;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: grab;
  user-select: none;
}
.palette-item:active {
  cursor: grabbing;
}
.canvas-container {
  flex: 1;
  position: relative;
  background: #fafafa;
}
.canvas {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  cursor: default;
}
.node {
  position: absolute;
  background: #fff;
  border: 1px solid #888;
  border-radius: 4px;
  padding: 6px 8px;
  min-width: 120px;
  user-select: none;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
.node.selected {
  border-color: #007bff;
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.45);
  background: rgba(0,123,255,0.04);
}
.node .node-title {
  font-weight: bold;
  margin-bottom: 4px;
}
.node .node-status {
  font-size: 12px;
  color: #666;
}
.node-handle {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #007bff;
  position: absolute;
  /* keep handle inside node to avoid clipping and ensure it's clickable */
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  cursor: crosshair;
  z-index: 20;
  pointer-events: auto;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.04);
}
.edges-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
  /* Debug border to ensure SVG overlay is visible */
  /* border: 1px solid red; */
}
.edges-canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
  top: 0;
  left: 0;
}
.edge-line {
  stroke: #333;
  stroke-width: 2;
  marker-end: url(#arrowhead);
}
.export-btn {
  position: absolute;
  bottom: 10px;
  right: 10px;
  padding: 6px 10px;
  background: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}
.export-btn:hover {
  background: #0056b3;
}
.inspector {
  width: 250px;
  background: #f9f9f9;
  border-left: 1px solid #ddd;
  padding: 10px;
  box-sizing: border-box;
  display: none;
}
.inspector.active {
  display: block;
}
.inspector-content label {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
}
.inspector-content input,
.inspector-content textarea,
.inspector-content select {
  width: 100%;
  padding: 4px;
  box-sizing: border-box;
  font-size: 14px;
}
/* Marquee selection box */
.selection-box {
  position: absolute;
  border: 2px dashed #007bff;
  background: rgba(0,123,255,0.10);
  pointer-events: none;
  z-index: 5000; /* keep above nodes and overlays */
  min-width: 4px;
  min-height: 4px;
}
/* Context menu for nodes */
#contextMenu {
  position: fixed;
  background: #fff;
  border: 1px solid #333;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  padding: 6px 0;
  min-width: 160px;
  display: none;
  z-index: 9999;
  visibility: visible;
}
#contextMenu .ctx-item {
  padding: 8px 12px;
  cursor: pointer;
}
#contextMenu .ctx-item:hover { background:#f5f5f5 }
/* Edge modal */
#edgeModal {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  border: 1px solid #ddd;
  padding: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
  z-index: 3000;
  display: none;
  width: 500px;
  min-height: 300px;
  max-height: 70vh;
  overflow: auto;
  cursor: move;
  resize: both;
}
.edge-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  background: linear-gradient(180deg, #f6f8fa, #eef3f8);
  border-bottom: 1px solid #e6eaf0;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
  cursor: grab;
  user-select: none;
}
.edge-modal-header:active { cursor: grabbing; }
.edge-modal-header h3 { margin: 0; font-size: 16px; }
.edge-modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: #666;
  padding: 4px;
  border-radius: 4px;
}
.edge-modal-close:hover { background: #f5f5f5; color: #000; }
.edge-modal-maximize {
  background: none;
  border: none;
  font-size: 14px;
  cursor: pointer;
  color: #666;
  padding: 4px;
  border-radius: 4px;
}
.edge-modal-maximize:hover { background:#f5f5f5; color:#000 }
#edgeList {
  margin-bottom: 16px;
  min-height: 100px;
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid #eee;
  padding: 8px;
  border-radius: 4px;
}
.edge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid #eee;
  gap: 8px;
}
.edge-row div {
  flex: 1;
  word-break: break-word;
}
.edge-row button {
  padding: 4px 8px;
  font-size: 12px;
  white-space: nowrap;
}
#edgeAddTarget option:hover {
  background: #007bff;
  color: #fff;
}
/* Highlight nodes when hovering over dropdown option */
.node.edge-target-hover {
  outline: 3px solid #28a745 !important;
  outline-offset: 2px;
}