* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100vh;

}

body {
  display: flex;
  flex-direction: column;
  font-family: monospace;
  background: #fff;
}

.header {
  height: 48px;
  display: flex;
  align-items: center;
  padding: 0 16px;
  border-bottom: 1px solid #ccc;
  background: #f8f8f8;
}

.logo {
  font-weight: bold;
  font-size: 18px;
}

.tabs {
  margin-left: 20px;
  display: flex;
  align-items: center;
  height: 100%;
}

.tab-btn {
  padding: 0 16px;
  height: 100%;
  display: flex;
  align-items: center;
  border: none;
  background: none;
  cursor: pointer;
  font-family: monospace;
  font-size: 14px;
  border-right: 1px solid #e0e0e0;
}

.tab-btn.active {
  font-weight: bold;
  background: white;
  border-bottom: 2px solid #1289d8;
}

.tab-content {
  display: none;
  flex: 1;
  min-height: 0;
  flex-direction: column;
}

.tab-content.active {
  display: flex;
}

.main-content {
  flex: 1;
  display: flex;
  min-height: 0;
}

.editor-panel {
  width: 30%;
  display: flex;
  flex-direction: column;
  border-right: 1px solid #ccc;
}

.CodeMirror {
  height: 100%;
  font-size: 14px;
  background: #fdf6e3;
}

.visualization-panel {
  width: 70%;

}

#canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: default;
}

.footer {
  height: 48px;
  display: flex;
  align-items: center;
  padding: 0 16px;
  border-top: 1px solid #ccc;
  background: #f8f8f8;
}

.button {
  padding: 8px 16px;
  margin-right: 10px;
  font-family: monospace;
  border: none;
  background: #e0e0e0;
  cursor: pointer;
  border-radius: 4px;
}

.button:hover {
  background: #d0d0d0;
}

.button.error {
  background: #ffebee;
}

.button.error:hover {
  background: #ffcdd2;
}

/* Export Menu Styles */
.export-container {
  position: relative;
  display: inline-block;
}

.export-menu {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 0;
  margin-bottom: 5px;
  background: white;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  z-index: 1000;
  min-width: 120px;
}

.export-menu.show {
  display: block;
}

.export-option {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font-family: monospace;
  font-size: 14px;
  color: #333;
}

.export-option:hover {
  background: #f0f0f0;
}

.export-option:first-child {
  border-radius: 4px 4px 0 0;
}

.export-option:last-child {
  border-radius: 0 0 4px 4px;
}

.export-option:only-child {
  border-radius: 4px;
}

.panel {
  position: absolute;
  bottom: 48px;
  left: 0;
  right: 0;
  height: 200px;
  background: white;
  border-top: 1px solid #ccc;
  padding: 16px;
  display: none;
  font-family: monospace;
  font-size: 12px;
  overflow: auto;
}

.panel.visible {
  display: block;
}

#error-panel .error-message {
  color: #d32f2f;
  margin-bottom: 8px;
  white-space: pre-wrap;
}

#error-panel .error-location {
  color: #666;
  font-size: 11px;
  margin-bottom: 16px;
}

.error-count {
  background: #d32f2f;
  color: white;
  border-radius: 10px;
  padding: 2px 6px;
  font-size: 11px;
  margin-left: 6px;
  display: none;
}

.error-count.visible {
  display: inline-block;
}

/* Documentation styles */
.docs-content {
  flex: 1;
  padding: 20px 40px;
  overflow-y: auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  color: #333;
}

.docs-content h1 {
  font-size: 28px;
  margin-bottom: 20px;
  color: #333;
}

.docs-content h2 {
  font-size: 22px;
  margin-top: 30px;
  margin-bottom: 15px;
  padding-bottom: 8px;
  border-bottom: 1px solid #eee;
  color: #444;
}

.docs-content h3 {
  font-size: 18px;
  margin-top: 25px;
  margin-bottom: 10px;
  color: #555;
}

.docs-content h4 {
  font-size: 16px;
  margin-top: 20px;
  margin-bottom: 10px;
  color: #666;
}

.docs-content p {
  margin-bottom: 16px;
}

.docs-content code {
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  background-color: #f5f5f5;
  padding: 2px 4px;
  border-radius: 3px;
  font-size: 85%;
}

.docs-content pre {
  background-color: #f5f5f5;
  padding: 16px;
  border-radius: 3px;
  overflow: auto;
  margin-bottom: 16px;
}

.docs-content pre code {
  background-color: transparent;
  padding: 0;
  font-size: 14px;
}

.docs-content ul, .docs-content ol {
  margin-bottom: 16px;
  padding-left: 30px;
}

.docs-content li {
  margin-bottom: 8px;
}

.docs-content a {
  color: #0366d6;
  text-decoration: none;
}

.docs-content a:hover {
  text-decoration: underline;
}

.docs-content blockquote {
  border-left: 4px solid #ddd;
  padding-left: 16px;
  color: #666;
  margin: 0 0 16px;
}

.docs-content hr {
  height: 1px;
  background-color: #ddd;
  border: none;
  margin: 24px 0;
}

.docs-content table {
  border-collapse: collapse;
  width: 100%;
  margin-bottom: 16px;
}

.docs-content th, .docs-content td {
  padding: 8px 12px;
  border: 1px solid #ddd;
}

.docs-content th {
  background-color: #f5f5f5;
  font-weight: bold;
  text-align: left;
}

/* Parameter Manager Styles */
.parameters-container {
  position: absolute;
  top: 60px;
  right: 20px;
  width: 250px;
  z-index: 1000;
  background-color: #f8f8e8;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  padding: 12px;
  display: none;
  max-height: 70vh;
  overflow-y: auto;
}

.parameters-content {
  width: 100%;
}

.shape-selector {
  width: 100%;
  margin-bottom: 12px;
  padding: 6px;
  font-family: monospace;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 3px;
}

.parameters-list {
  font-family: monospace;
  font-size: 14px;
}

.parameter-item {
  margin-bottom: 15px;
}

.parameter-label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.parameter-slider-container {
  display: flex;
  align-items: center;
}

.parameter-slider {
  flex-grow: 1;
  margin-right: 8px;
  cursor: pointer;
}

.parameter-value {
  width: 50px;
  padding: 3px;
  border: 1px solid #ccc;
  border-radius: 3px;
  text-align: center;
}

.no-shapes-message {
  font-style: italic;
  color: #666;
}

.update-button {
  position: absolute;
  bottom: 15px;
  left: 15px;
  padding: 8px 12px;
  font-size: 13px;
  font-family: monospace;
  background-color: #1289d8;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  transition: all 0.2s ease-in-out;
}

/* Smooth slider styling */
.parameter-slider::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  background: #1289d8;
  border-radius: 50%;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.parameter-slider::-webkit-slider-thumb:hover {
  background: #0d6efd;
}

.parameter-slider::-webkit-slider-track {
  height: 4px;
  background: #ddd;
  border-radius: 2px;
}

.parameter-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: #1289d8;
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.parameter-slider::-moz-range-track {
  height: 4px;
  background: #ddd;
  border-radius: 2px;
  border: none;
}

/* Shape handles and interactive elements */
.shape-handles {
  position: absolute;
  pointer-events: none;
}

.shape-handle {
  width: 8px;
  height: 8px;
  background-color: white;
  border: 2px solid #ff5722;
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: all;
  cursor: pointer;
}

.shape-handle.tl { cursor: nwse-resize; }
.shape-handle.tr { cursor: nesw-resize; }
.shape-handle.br { cursor: nwse-resize; }
.shape-handle.bl { cursor: nesw-resize; }
.shape-handle.rotate { cursor: grab; }
.shape-handle.rotate:active { cursor: grabbing; }

.rotation-handle {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #ff5722;
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: all;
  cursor: grab;
}

.rotation-handle:active {
  cursor: grabbing;
}

.rotation-line {
  position: absolute;
  width: 1px;
  height: 30px;
  background-color: #ff5722;
  transform-origin: bottom center;
  pointer-events: none;
}

.shape-controls {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(255, 255, 255, 0.9);
  padding: 10px;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  z-index: 100;
}

.shape-controls button {
  margin-right: 5px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  border-radius: 3px;
  padding: 3px 8px;
  cursor: pointer;
}

.shape-controls button:hover {
  background-color: #e0e0e0;
}

.selected-shape-info {
  font-family: monospace;
  font-size: 12px;
  margin-top: 8px;
}

.keyboardShortcuts {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(255, 255, 255, 0.9);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 100;
  display: block;
}

/* Property editor modal */
#shape-properties-modal {
  display: none; 
  position: fixed; 
  z-index: 2000; 
  left: 0; 
  top: 0; 
  width: 100%; 
  height: 100%; 
  background-color: rgba(0,0,0,0.4);
}

#shape-properties-modal .modal-content {
  background-color: white; 
  margin: 15% auto; 
  padding: 20px; 
  border-radius: 5px; 
  width: 400px; 
  max-width: 80%;
}

#property-fields {
  margin-top: 15px;
}

.property-field {
  margin-bottom: 10px;
}

.property-field label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.property-field input {
  width: 100%;
  padding: 5px;
  border: 1px solid #ddd;
  border-radius: 3px;
}

.modal-buttons {
  margin-top: 20px; 
  text-align: right;
}

.modal-buttons button {
  padding: 5px 10px;
  border-radius: 3px;
  cursor: pointer;
}

#apply-properties {
  background-color: #4CAF50; 
  color: white; 
  border: none;
  margin-left: 10px;
}

#cancel-properties {
  background-color: #f0f0f0;
  border: 1px solid #ddd;
}

/* Modern Canvas Styles - Add these to your styles.css */

/* Canvas container styling */
.visualization-panel {
  width: 50%;
  position: relative;
  background: #FAFAFA;
  border-left: 1px solid #E5E7EB;
}

/* Modern canvas styling */
#canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: default;
  background: #FAFAFA;
  image-rendering: crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: pixelated;
}

/* Custom cursor definitions - Classic black and white paper airplane style */
#canvas.cursor-move {
  cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHBhdGggZD0iTTIgMkwyMiA5TDE0IDE0TDkgMjJMMiAyWiIgZmlsbD0iIzAwMDAwMCIgc3Ryb2tlPSIjRkZGRkZGIiBzdHJva2Utd2lkdGg9IjEuNSIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCIvPgo8cGF0aCBkPSJNMTQgMTRMOSAyMkwyIDJMMTQgMTRaIiBmaWxsPSIjMzMzMzMzIiBmaWxsLW9wYWNpdHk9IjAuNyIvPgo8L3N2Zz4K') 4 4, auto;
}

#canvas.cursor-grab {
  cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHBhdGggZD0iTTIgMkwyMiA5TDE0IDE0TDkgMjJMMiAyWiIgZmlsbD0iIzAwMDAwMCIgc3Ryb2tlPSIjRkZGRkZGIiBzdHJva2Utd2lkdGg9IjEuNSIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCIvPgo8cGF0aCBkPSJNMTQgMTRMOSAyMkwyIDJMMTQgMTRaIiBmaWxsPSIjMzMzMzMzIiBmaWxsLW9wYWNpdHk9IjAuNyIvPgo8L3N2Zz4K') 4 4, grab;
}

#canvas.cursor-grabbing {
  cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHBhdGggZD0iTTIgMkwyMiA5TDE0IDE0TDkgMjJMMiAyWiIgZmlsbD0iIzMzMzMzMyIgc3Ryb2tlPSIjRkZGRkZGIiBzdHJva2Utd2lkdGg9IjEuNSIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCIvPgo8cGF0aCBkPSJNMTQgMTRMOSAyMkwyIDJMMTQgMTRaIiBmaWxsPSIjNTU1NTU1IiBmaWxsLW9wYWNpdHk9IjAuOCIvPgo8L3N2Zz4K') 4 4, grabbing;
}

#canvas.cursor-rotate {
  cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPGNpcmNsZSBjeD0iMTIiIGN5PSIxMiIgcj0iOSIgc3Ryb2tlPSIjMDAwMDAwIiBzdHJva2Utd2lkdGg9IjEuNSIgZmlsbD0iI0ZGRkZGRiIvPgo8cGF0aCBkPSJNMTUgOUwxOCA2SDE0VjEwTDE1IDlaIiBmaWxsPSIjMDAwMDAwIi8+CjxwYXRoIGQ9Ik0xMiA4QTE2IDE2IDAgMCAwIDggMTIiIHN0cm9rZT0iIzAwMDAwMCIgc3Ryb2tlLXdpZHRoPSIxLjUiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIvPgo8L3N2Zz4K') 12 12, grab;
}

#canvas.cursor-resize-nwse {
  cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHBhdGggZD0iTTMgM0wyMSAyMSIgc3Ryb2tlPSIjMDAwMDAwIiBzdHJva2Utd2lkdGg9IjIiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIvPgo8cGF0aCBkPSJNNyAzSDNWN00yMSAxN1YyMUgxNyIgc3Ryb2tlPSIjMDAwMDAwIiBzdHJva2Utd2lkdGg9IjIiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCIvPgo8L3N2Zz4K') 12 12, nwse-resize;
}

#canvas.cursor-resize-nesw {
  cursor: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHBhdGggZD0iTTMgMjFMMjEgMyIgc3Ryb2tlPSIjMDAwMDAwIiBzdHJva2Utd2lkdGg9IjIiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIvPgo8cGF0aCBkPSJNMTcgM0gyMVY3TTMgMTdWMjFIN00iIHN0cm9rZT0iIzAwMDAwMCIgc3Ryb2tlLXdpZHRoPSIyIiBzdHJva2UtbGluZWNhcD0icm91bmQiIHN0cm9rZS1saW5lam9pbj0icm91bmQiLz4KPC9zdmc+') 12 12, nesw-resize;
}

/* Smooth transitions for canvas interactions */
#canvas {
  transition: opacity 0.2s ease;
}

/* Canvas overlay for loading states */
.canvas-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(250, 250, 250, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 10;
}

.canvas-overlay.visible {
  opacity: 1;
  pointer-events: all;
}

.canvas-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: #6B7280;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
}

.canvas-loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid #E5E7EB;
  border-top: 2px solid #FF5722;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Grid toggle button */
.grid-toggle-button {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: #6B7280;
  z-index: 100;
}

.grid-toggle-button:hover {
  background: rgba(255, 255, 255, 1);
  color: #FF5722;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.grid-toggle-button.active {
  background: #FF5722;
  color: white;
}

.grid-toggle-button.active:hover {
  background: #E64A19;
}

/* Modern toolbar styling */
.canvas-toolbar {
  position: absolute;
  top: 16px;
  left: 16px;
  display: flex;
  gap: 8px;
  z-index: 100;
}

.canvas-tool-button {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: #6B7280;
}

.canvas-tool-button:hover {
  background: rgba(255, 255, 255, 1);
  color: #FF5722;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.canvas-tool-button.active {
  background: #FF5722;
  color: white;
}

/* Zoom controls */
.canvas-zoom-controls {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 100;
}

.zoom-button {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 500;
  color: #6B7280;
  transition: all 0.2s ease;
}

.zoom-button:hover {
  background: rgba(255, 255, 255, 1);
  color: #FF5722;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.zoom-level {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: #6B7280;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  font-family: 'SF Mono', Monaco, monospace;
}

/* Status indicators */
.canvas-status {
  position: absolute;
  bottom: 16px;
  left: 16px;
  display: flex;
  gap: 8px;
  z-index: 100;
}

.status-indicator {
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  font-size: 11px;
  color: #6B7280;
  font-family: 'SF Mono', Monaco, monospace;
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-indicator.grid-enabled {
  color: #FF5722;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Selection info panel */
.selection-info {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: 8px;
  padding: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  font-size: 12px;
  color: #6B7280;
  font-family: 'SF Mono', Monaco, monospace;
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
  z-index: 100;
  min-width: 200px;
}

.selection-info.visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.selection-info .shape-name {
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
}

.selection-info .shape-props {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.selection-info .prop-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.selection-info .prop-label {
  color: #9CA3AF;
}

.selection-info .prop-value {
  color: #FF5722;
  font-weight: 500;
}

/* Modern keyboard shortcuts display - matches uploaded image style */
.keyboardShortcuts {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 100;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  color: #FFFFFF;
  border: none;
  white-space: nowrap;
  font-weight: 400;
}

.keyboardShortcuts strong {
  color: #FFFFFF;
  font-weight: 600;
}

/* Smooth focus rings for accessibility */
*:focus-visible {
  outline: 2px solid #FF5722;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Performance optimizations */
.visualization-panel * {
  will-change: transform;
}

/* Clean scrollbars */
.visualization-panel::-webkit-scrollbar {
  width: 0px;
  background: transparent;
}

/* High DPI display optimizations */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  #canvas {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
  .visualization-panel {
    background: #1F2937;
  }
  
  #canvas {
    background: #1F2937;
  }
  
  .canvas-tool-button {
    background: rgba(55, 65, 81, 0.9);
    color: #D1D5DB;
  }
  
  .canvas-tool-button:hover {
    background: rgba(55, 65, 81, 1);
    color: #FF5722;
  }
}

/* Drag & Drop Shape Palette Styles */

/* Toggle Button - positioned on right side of top area */
.palette-toggle-button {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #6B7280;
  transition: all 0.2s ease;
  z-index: 100;
  font-weight: bold;
}

.palette-toggle-button:hover {
  background: rgba(255, 255, 255, 1);
  color: #FF5722;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Main Palette Container */
.shape-palette-container {
  position: fixed;
  top: 70px;
  right: 16px;
  width: 280px;
  max-height: 400px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 1000;
  opacity: 0;
  transform: translateY(-10px) scale(0.95);
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.shape-palette-container.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

/* Palette Header */
.palette-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.palette-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #374151;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

.close-palette {
  background: none;
  border: none;
  font-size: 20px;
  color: #9CA3AF;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.close-palette:hover {
  background: rgba(0, 0, 0, 0.05);
  color: #374151;
}

/* Palette Content */
.palette-content {
  padding: 16px;
  max-height: 320px;
  overflow-y: auto;
}

/* Custom scrollbar */
.palette-content::-webkit-scrollbar {
  width: 6px;
}

.palette-content::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 3px;
}

.palette-content::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 3px;
}

.palette-content::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

/* Palette Grid */
.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 12px;
}

/* Individual Palette Items */
.palette-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.7);
  border: 2px solid transparent;
  cursor: grab;
  transition: all 0.2s ease;
  user-select: none;
  position: relative;
}

.palette-item:hover {
  background: rgba(255, 255, 255, 1);
  border-color: #FF5722;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 87, 34, 0.2);
}

.palette-item:active,
.palette-item.dragging {
  cursor: grabbing;
  transform: scale(1.05);
}

/* Shape Icons */
.shape-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 6px;
  color: #6B7280;
  transition: color 0.2s ease;
}

.palette-item:hover .shape-icon {
  color: #FF5722;
}

.shape-icon svg {
  width: 24px;
  height: 24px;
}

/* Shape Names */
.shape-name {
  font-size: 11px;
  font-weight: 500;
  color: #6B7280;
  text-align: center;
  line-height: 1.2;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

.palette-item:hover .shape-name {
  color: #374151;
}

/* Drag Preview */
.drag-preview {
  position: fixed;
  width: 70px;
  height: auto;
  pointer-events: none;
  z-index: 10000;
  opacity: 0.8;
  transform: scale(1.1);
  transition: none;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  border: 2px solid #FF5722;
}

.drag-preview.over-canvas {
  opacity: 1;
  background: rgba(255, 87, 34, 0.1);
  border-color: #FF5722;
  box-shadow: 0 8px 24px rgba(255, 87, 34, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
  .shape-palette-container {
    right: 8px;
    left: 8px;
    width: auto;
    max-height: 300px;
  }
  
  .palette-grid {
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 8px;
  }
  
  .palette-item {
    padding: 8px 4px;
  }
  
  .shape-icon {
    width: 28px;
    height: 28px;
  }
  
  .shape-icon svg {
    width: 20px;
    height: 20px;
  }
  
  .shape-name {
    font-size: 10px;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .shape-palette-container {
    background: rgba(31, 41, 55, 0.95);
    border: 1px solid rgba(75, 85, 99, 0.3);
  }
  
  .palette-header {
    border-bottom-color: rgba(75, 85, 99, 0.3);
  }
  
  .palette-header h3 {
    color: #F3F4F6;
  }
  
  .close-palette {
    color: #9CA3AF;
  }
  
  .close-palette:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #F3F4F6;
  }
  
  .palette-item {
    background: rgba(55, 65, 81, 0.7);
  }
  
  .palette-item:hover {
    background: rgba(55, 65, 81, 1);
    border-color: #FF5722;
  }
  
  .shape-icon {
    color: #D1D5DB;
  }
  
  .palette-item:hover .shape-icon {
    color: #FF5722;
  }
  
  .shape-name {
    color: #D1D5DB;
  }
  
  .palette-item:hover .shape-name {
    color: #F3F4F6;
  }
  
  .palette-toggle-button {
    background: rgba(55, 65, 81, 0.9);
    color: #D1D5DB;
  }
  
  .palette-toggle-button:hover {
    background: rgba(55, 65, 81, 1);
    color: #FF5722;
  }
}

/* Animation for shape creation feedback */
@keyframes shapeCreated {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.7;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.palette-item.shape-created {
  animation: shapeCreated 0.4s ease-out;
}

/* Enhanced visual feedback */
.palette-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 8px;
  background: linear-gradient(45deg, transparent, rgba(255, 87, 34, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.palette-item:hover::before {
  opacity: 1;
}

/* Accessibility improvements */
.palette-item:focus {
  outline: 2px solid #FF5722;
  outline-offset: 2px;
}

.palette-toggle-button:focus {
  outline: 2px solid #FF5722;
  outline-offset: 2px;
}

/* Smooth entrance animation */
.palette-grid .palette-item {
  opacity: 0;
  transform: translateY(10px);
  animation: fadeInUp 0.3s ease-out forwards;
}

.palette-grid .palette-item:nth-child(1) { animation-delay: 0.05s; }
.palette-grid .palette-item:nth-child(2) { animation-delay: 0.1s; }
.palette-grid .palette-item:nth-child(3) { animation-delay: 0.15s; }
.palette-grid .palette-item:nth-child(4) { animation-delay: 0.2s; }
.palette-grid .palette-item:nth-child(5) { animation-delay: 0.25s; }
.palette-grid .palette-item:nth-child(6) { animation-delay: 0.3s; }
.palette-grid .palette-item:nth-child(7) { animation-delay: 0.35s; }
.palette-grid .palette-item:nth-child(8) { animation-delay: 0.4s; }
.palette-grid .palette-item:nth-child(9) { animation-delay: 0.45s; }
.palette-grid .palette-item:nth-child(10) { animation-delay: 0.5s; }
.palette-grid .palette-item:nth-child(11) { animation-delay: 0.55s; }
.palette-grid .palette-item:nth-child(12) { animation-delay: 0.6s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.examples-menu__title {
  font-size: 28px;
  margin-bottom: 20px;
  color: #333;
}

.examples-menu {
  padding: 20px 40px;
}
.examples-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 24px;
}
.example-card {
  background: #f0f0f0;
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s;
}
.example-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.example-card img {
  width: 240px;
  height: auto;
  margin-top: 8px;
}
.example-detail {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  padding: 40px;
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.example-detail.visible {
  display: flex;
}
.detail-back {
  align-self: flex-end;
  background-color: rgb(239, 162, 115);
  color: #ffffff;
  border: none;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.detail-back:hover {
  background-color: rgb(179, 83, 15);
  transform: translateY(-1px);
}
.detail-back:active {
  background-color: rgb(179, 83, 15);
  transform: translateY(0);
}
.detail-image {
  width: 100%;
  max-height: 35vh;      /* limit height to 35% of viewport */
  object-fit: contain;    /* preserve aspect ratio */
  margin-bottom: 20px;
}
.detail-panels {
  display: flex;
  gap: 20px;
  flex: 1;
  overflow: hidden;
}
.detail-code,
.detail-info {
  flex: 1;
  background: #e8e8e8;
  padding: 16px;
  border-radius: 4px;
  overflow-y: auto;
}
.detail-code {
  white-space: pre-wrap;
  font-family: monospace;
  max-height: 100%;
  white-space: pre-wrap;
  font-family: monospace;
}

.tutorials-container {
  padding: 24px 40px;
}

.tutorials-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: #333;
}

.tutorial-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.tutorial-card h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin: 0;
  padding: 16px;
  background: #f9f9f9;
  border-bottom: 1px solid #e5e5e5;
}

.tutorial-card p {
  flex: 1;
  padding: 16px;
  font-size: 0.95rem;
  line-height: 1.4;
  color: #444;
}

.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;             
}

@media (max-width: 768px) {
  .tutorials-grid {
    grid-template-columns: 1fr;
  }
}

.tutorial-card {
  overflow: visible; 
}

.tutorial-video {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: contain; 
}