/* Design Tokens & Custom Variables */
:root {
  --bg-primary: #0a0b0e;
  --bg-secondary: #12141a;
  --bg-tertiary: #191c25;
  --bg-glass: rgba(18, 20, 26, 0.65);
  --border-color: rgba(255, 255, 255, 0.05);
  --border-hover: rgba(255, 255, 255, 0.12);
  --border-glow: rgba(99, 102, 241, 0.25);
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  
  --accent: #6366f1; /* Indigo */
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.35);
  
  --success: #10b981; /* Emerald */
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b; /* Amber */
  --danger: #ef4444; /* Rose */
  
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-circle: 50%;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 25px var(--accent-glow);
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Decorative Background Glows */
.bg-glow {
  position: fixed;
  border-radius: var(--radius-circle);
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.25;
}

.bg-glow-1 {
  width: 500px;
  height: 500px;
  background: var(--accent);
  top: -100px;
  right: -50px;
}

.bg-glow-2 {
  width: 400px;
  height: 400px;
  background: #3b82f6; /* Blue */
  bottom: -100px;
  left: -50px;
}

/* Layout Utilities */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 0 1.5rem;
  max-width: 1600px;
  margin: 0 auto;
}

/* Glassmorphism Panel style */
.glass-panel {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-panel:hover {
  border-color: var(--border-hover);
}

/* Typography styles */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* Header Styling */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
  animation: logo-float 4s ease-in-out infinite alternate;
}

.brand-text h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.brand-text .highlight {
  background: linear-gradient(135deg, var(--accent-light) 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.header-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
}

.privacy-tag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.15);
  color: var(--success);
  padding: 0.5rem 0.85rem;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 500;
}

.privacy-tag i {
  font-size: 0.85rem;
}

/* Workspace Main Layout */
.workspace-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 1.5rem;
  flex: 1;
  min-height: 0;
}

/* Left Panel: Canvas Workspace */
.canvas-workspace {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.canvas-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1.25rem;
  position: relative;
  min-height: 580px;
}

.canvas-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-circle);
  display: inline-block;
}

.status-dot.idle {
  background-color: var(--text-muted);
}

.status-dot.loading {
  background-color: var(--warning);
  box-shadow: 0 0 8px var(--warning);
  animation: pulse 1s infinite alternate;
}

.status-dot.active {
  background-color: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse 0.6s infinite alternate;
}

.status-text {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.canvas-view-controls {
  display: flex;
  gap: 0.5rem;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: 30px;
  cursor: pointer;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.icon-btn:hover, .icon-btn.active {
  border-color: var(--accent);
  color: var(--accent-light);
  background: rgba(99, 102, 241, 0.06);
}

/* Canvas Container Wrapper */
.canvas-wrapper {
  flex: 1;
  background: #08090c;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 4px 20px rgba(0,0,0,0.4);
}

/* Grid Layout Overlay on Canvas Container */
.canvas-wrapper.grid-active::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: 30px 30px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  pointer-events: none;
  z-index: 1;
}

#drawing-canvas {
  max-width: 100%;
  max-height: 100%;
  display: block;
  z-index: 2;
  border-radius: var(--radius-sm);
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.reference-overlay-img {
  position: absolute;
  max-width: 100%;
  max-height: 100%;
  opacity: 0.15;
  pointer-events: none;
  z-index: 1;
  object-fit: contain;
  transition: opacity var(--transition-normal);
}

.drawing-cursor {
  position: absolute;
  pointer-events: none;
  z-index: 100; /* Ensure hand draws above overlay content */
  width: 150px;
  height: 150px;
  filter: drop-shadow(-4px 8px 12px rgba(0,0,0,0.35));
  transform: translate(-15px, -135px); /* Align the SVG pencil tip with coordinates */
  transition: left 0.03s linear, top 0.03s linear;
}

/* Welcome Overlay when empty */
.welcome-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  z-index: 15;
  transition: opacity var(--transition-normal);
}

.welcome-content {
  text-align: center;
  max-width: 320px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.welcome-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-circle);
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid rgba(99, 102, 241, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--accent-light);
  margin-bottom: 0.5rem;
}

.welcome-content h3 {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.welcome-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Drawing Completion Panel Overlay */
.completion-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 11, 14, 0.85);
  backdrop-filter: blur(8px);
  z-index: 15;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal) ease;
}

.completion-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.completion-content {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 2rem 2.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 380px;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.completion-overlay.active .completion-content {
  transform: translateY(0);
}

.completion-badge {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-circle);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--success);
}

.completion-content h3 {
  font-size: 1.35rem;
  color: var(--text-primary);
}

.completion-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.completion-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* Canvas Toolbar */
.canvas-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  background: rgba(255, 255, 255, 0.02);
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.playback-controls, .export-controls {
  display: flex;
  gap: 0.5rem;
}

.toolbar-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.toolbar-btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.2);
}

.toolbar-btn.primary:hover:not(:disabled) {
  background: var(--accent-light);
  border-color: var(--accent-light);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.toolbar-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.circle-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  justify-content: center;
  border-radius: var(--radius-circle);
}

.circle-btn.active {
  color: var(--accent-light);
  border-color: var(--accent-light);
  background: rgba(99, 102, 241, 0.05);
}

/* Right Dashboard Panel */
.control-dashboard {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.dashboard-card {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.dashboard-card.disabled-card {
  opacity: 0.45;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.dashboard-card.disabled-card:hover {
  border-color: var(--border-color);
}

.card-header h3 {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.card-header h3 i {
  color: var(--accent-light);
  font-size: 0.95rem;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem 1rem;
  text-align: center;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-normal);
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.03);
  box-shadow: inset 0 0 15px rgba(99, 102, 241, 0.05);
}

.upload-icon {
  font-size: 1.75rem;
  color: var(--text-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.upload-zone:hover .upload-icon {
  color: var(--accent-light);
  transform: translateY(-2px);
}

.upload-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.upload-text .highlight {
  color: var(--accent-light);
  font-weight: 500;
}

.upload-subtext {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Preview Image Area */
.source-preview-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.02);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.preview-box {
  width: 90px;
  height: 90px;
  border-radius: var(--radius-sm);
  background: #000;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
}

.preview-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: cover;
}

.laser-scanner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(to right, transparent, var(--accent-light), transparent);
  box-shadow: 0 0 8px var(--accent);
  animation: laser-scan 2s linear infinite;
  z-index: 5;
}

.preview-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
}

.meta-label {
  color: var(--text-muted);
}

.meta-value {
  color: var(--text-secondary);
  font-weight: 500;
}

.text-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  cursor: pointer;
  align-self: flex-start;
  margin-top: 0.3rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

.text-btn:hover {
  color: var(--danger);
}

/* Sample Gallery Grid */
.samples-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.samples-section h4 {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.samples-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.sample-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
}

.sample-item img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.sample-item span {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  transition: color var(--transition-fast);
}

.sample-item:hover img {
  border-color: var(--accent);
  transform: scale(1.04);
}

.sample-item:hover span {
  color: var(--text-secondary);
}

/* Interactive Controls and Settings */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.control-value {
  color: var(--accent-light);
  font-weight: 600;
}

.control-help {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* Ranges inputs styling */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  outline: none;
  border: 1px solid var(--border-color);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-circle);
  background: var(--accent-light);
  cursor: pointer;
  box-shadow: 0 0 6px var(--accent);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

input[type="range"]:hover:not(:disabled)::-webkit-slider-thumb {
  transform: scale(1.2);
  background: #fff;
}

input[type="range"]:disabled {
  opacity: 0.5;
}

input[type="range"]:disabled::-webkit-slider-thumb {
  cursor: not-allowed;
  box-shadow: none;
  background: var(--text-muted);
}

/* Speed Ticks style */
.speed-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--text-muted);
  padding: 0 0.1rem;
}

.control-row {
  display: flex;
  gap: 0.75rem;
}

.half-width {
  flex: 1;
}

.control-group label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

/* Custom dropdown style */
.custom-select {
  position: relative;
}

.custom-select select {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  border-radius: var(--radius-md);
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.custom-select select:hover:not(:disabled) {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.custom-select select:focus {
  border-color: var(--accent);
}

.custom-select::after {
  content: "\f078"; /* fa-chevron-down */
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.65rem;
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.custom-select select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #fff;
  border: none;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  transition: all var(--transition-normal);
}

.primary-btn:hover:not(:disabled) {
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

.primary-btn:active:not(:disabled) {
  transform: translateY(0);
}

.primary-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: none;
}

.secondary-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

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

.w-full {
  width: 100%;
}

.apply-btn {
  margin-top: 0.25rem;
}

/* Diagnostic Panel & Node Logging */
.diagnostic-layout {
  gap: 1.25rem;
}

.diagnostic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.diag-stat {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-color);
  padding: 0.65rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.diag-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.diag-value {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.neural-nodes-log {
  border: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.log-header {
  background: rgba(255, 255, 255, 0.02);
  padding: 0.5rem 0.75rem;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.pulse-indicator {
  width: 6px;
  height: 6px;
  background-color: var(--success);
  border-radius: var(--radius-circle);
  box-shadow: 0 0 6px var(--success);
  animation: pulse-simple 1.5s infinite;
}

.log-body {
  padding: 0.75rem;
  font-family: monospace;
  font-size: 0.7rem;
  max-height: 100px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.log-line {
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  line-height: 1.4;
}

.log-line i {
  margin-top: 0.1rem;
  color: var(--text-muted);
}

.log-line.success {
  color: var(--success);
}
.log-line.success i {
  color: var(--success);
}

.log-line.info {
  color: var(--accent-light);
}
.log-line.info i {
  color: var(--accent-light);
}

.log-line.warning {
  color: var(--warning);
}
.log-line.warning i {
  color: var(--warning);
}

/* Footer style */
.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-color);
  margin-top: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--text-secondary);
}

/* Animations declarations */
@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.6; }
  100% { transform: scale(1.15); opacity: 1; }
}

@keyframes pulse-simple {
  0% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(1); opacity: 0.4; }
}

@keyframes logo-float {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-4px) rotate(3deg); }
}

@keyframes laser-scan {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

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

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

/* Responsiveness */
@media (max-width: 1024px) {
  .workspace-layout {
    grid-template-columns: 1fr;
  }
  
  .canvas-card {
    min-height: 480px;
  }
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
  }
  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
  .app-container {
    padding: 0 1rem;
  }
  .canvas-toolbar {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .export-controls {
    width: 100%;
    justify-content: flex-end;
  }
  .control-row {
    flex-direction: column;
    gap: 1rem;
  }
  .app-footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    padding: 1rem 0;
  }
}

/* Workspace Tabs */
.workspace-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  gap: 0.25rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.4rem 0.85rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

/* Trace & Learn Floating HUD Panel */
.learn-hud-panel {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 250px;
  padding: 1rem;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  pointer-events: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: hud-slide-in 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  background: rgba(18, 20, 26, 0.85) !important;
}

@keyframes hud-slide-in {
  from { transform: translateX(30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.hud-header h3 {
  font-size: 0.80rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hud-header h3 i {
  color: var(--accent-light);
}

.hud-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.hud-stat-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  padding: 0.45rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.hud-lbl {
  font-size: 0.55rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.hud-val {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hud-val.highlight {
  color: var(--success);
}
.hud-val.warning {
  color: var(--warning);
}
.hud-val.danger {
  color: var(--danger);
}

.hud-feedback-box {
  background: rgba(99, 102, 241, 0.04);
  border: 1px solid rgba(99, 102, 241, 0.1);
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  line-height: 1.35;
  color: var(--text-secondary);
  display: flex;
  gap: 0.4rem;
}

.hud-feedback-box i {
  color: var(--accent-light);
  font-size: 0.65rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.hud-actions-row {
  display: flex;
  gap: 0.4rem;
}

.hud-actions-row .icon-btn {
  flex: 1;
  justify-content: center;
  border-radius: var(--radius-sm);
  padding: 0.45rem;
}

/* Sub-mode Selection in HUD */
.hud-mode-selector {
  display: flex;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.15rem;
  gap: 0.15rem;
}

.hud-mode-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.35rem 0.5rem;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  transition: all var(--transition-fast);
}

.hud-mode-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
}

.hud-mode-btn.active {
  background: var(--accent);
  color: #fff;
}

/* Drawing Tools in HUD */
.hud-tools-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  gap: 0.5rem;
}

.tool-select-group {
  display: flex;
  gap: 0.25rem;
}

.tool-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: all var(--transition-fast);
}

.tool-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.tool-btn.active {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--accent);
  color: var(--accent-light);
}

.color-select-group {
  display: flex;
  gap: 0.4rem;
}

.color-dot {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-circle);
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.color-dot:hover {
  transform: scale(1.25);
}

.color-dot.active {
  border-color: #fff;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
}

/* Premium Upgrade Banners & Badges */
.premium-badge-btn {
  background: linear-gradient(135deg, #d97706 0%, #f59e0b 50%, #fbbf24 100%);
  color: #0f172a;
  border: none;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
  transition: all var(--transition-normal);
}

.premium-badge-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(245, 158, 11, 0.4), 0 0 8px rgba(251, 191, 36, 0.2);
}

.premium-badge-btn i {
  font-size: 0.9rem;
  animation: crown-shimmer 2s infinite alternate;
}

.premium-active-badge {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.22);
  color: #fbbf24;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.1);
  animation: gold-pulse 2s infinite alternate;
}

@keyframes crown-shimmer {
  0% { transform: rotate(-5deg) scale(0.95); }
  100% { transform: rotate(5deg) scale(1.15); }
}

@keyframes gold-pulse {
  0% { box-shadow: 0 0 6px rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.15); }
  100% { box-shadow: 0 0 14px rgba(245, 158, 11, 0.25); border-color: rgba(245, 158, 11, 0.35); }
}

/* Paywall Modals Layout overlay */
.paywall-overlay-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(8, 9, 12, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-in-modal var(--transition-normal);
}

@keyframes fade-in-modal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.paywall-content-card {
  width: 90%;
  max-width: 440px;
  background: var(--bg-glass);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 2.25rem 2rem;
  border-radius: var(--radius-lg);
  position: relative;
  text-align: center;
  box-shadow: 0 25px 50px rgba(0,0,0,0.6), 0 0 30px rgba(245, 158, 11, 0.1);
  transform: scale(0.95);
  animation: scale-up-modal var(--transition-normal) forwards;
}

@keyframes scale-up-modal {
  to { transform: scale(1); }
}

.paywall-content-card.settings-card {
  border-color: var(--border-color);
  box-shadow: 0 25px 50px rgba(0,0,0,0.6);
  max-width: 400px;
  text-align: left;
}

.modal-close-btn {
  position: absolute;
  top: 1.15rem;
  right: 1.15rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.15rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--danger);
}

.paywall-header {
  margin-bottom: 1.5rem;
}

.paywall-header .crown-icon {
  width: 55px;
  height: 55px;
  background: rgba(245, 158, 11, 0.08);
  border: 2px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-circle);
  color: #fbbf24;
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
}

.paywall-header h2 {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.paywall-header p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.paywall-price-badge {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.paywall-price-badge .price-val {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 800;
  color: #fbbf24;
}

.paywall-price-badge .price-period {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.paywall-features-list {
  text-align: left;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.75rem;
}

.paywall-features-list li {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

.paywall-features-list li i {
  color: var(--success);
  margin-top: 0.15rem;
}

.paywall-checkout-btn {
  width: 100%;
  background: linear-gradient(135deg, #d97706 0%, #f59e0b 50%, #fbbf24 100%);
  color: #0f172a;
  border: none;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.7rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.25);
  transition: all var(--transition-normal);
}

.paywall-checkout-btn:hover {
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.45), 0 0 12px rgba(251, 191, 36, 0.22);
  transform: translateY(-1px);
}

.paywall-secure-note {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3;
}

.paywall-secure-note i {
  color: var(--success);
}

/* Settings Inputs Form layout */
.settings-inputs-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.25rem 0 1.5rem;
}

.settings-text-input {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.55rem 0.75rem;
  font-family: monospace;
  font-size: 0.78rem;
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast);
}

.settings-text-input:focus {
  border-color: var(--accent);
}