app.css

/* Microsoft Fluent Design System inspired styles */

:root {
  /* Microsoft Brand Colors */
  --ms-blue: #0078D4;
  --ms-blue-dark: #106EBE;
  --ms-blue-light: #2B88D8;
  --ms-green: #107C10;
  --ms-green-light: #159118;
  --ms-yellow: #FFB900;
  --ms-orange: #D83B01;
  --ms-purple: #5C2D91;
  --ms-cyan: #00A9E0;
  --ms-red: #E81123;
  
  /* Dark Theme */
  --bg-primary: #1B1B1B;
  --bg-secondary: #2D2D2D;
  --bg-tertiary: #3D3D3D;
  --bg-elevated: #323232;
  --text-primary: #FFFFFF;
  --text-secondary: #B3B3B3;
  --text-tertiary: #A0A0A0;
  --border-color: #404040;
  --border-subtle: #333333;
  /* Foreground for accent-colored fills (e.g. buttons on var(--ms-blue)) */
  --on-accent: #FFFFFF;
  /* Stat-card metric icon/value foregrounds — WCAG 2.1 AA (>=3:1) on the
     translucent tiles over a dark sidebar (dark + aurora themes). */
  --stat-blue: #5CB0F2;
  --stat-green: #3FB950;
  --stat-purple: #C4A2F0;
  /* Foreground for amber icons + text. Bright amber reads on the dark surfaces
     (dark + aurora); light themes override to a darker gold for >=4.5:1 text. */
  --ms-yellow-fg: #FFB900;
  /* Progress-bar fill stops — must clear 3:1 against the --bg-tertiary track
     (SC 1.4.11). Bright on the dark track; light themes use accent + purple. */
  --progress-from: #4DA6FF;
  --progress-to: #B98EE6;
  
  /* Semantic Colors */
  --success: #107C10;
  --warning: #FFB900;
  --error: #E81123;
  --info: #0078D4;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 120, 212, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-normal: 250ms ease-out;
  --transition-slow: 400ms ease-out;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Font Family */
  --font-primary: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', monospace;
  
  /* Graph-specific dark mode colors */
  --graph-bg: #1E1E1E;
  --graph-node-text: #B3B3B3;
  --graph-edge-color: #6E6E6E;
  --graph-edge-text: #9CA0A8;
  --graph-edge-label-bg: #15161D;
  
  /* Chess board pattern colors for dark mode - futuristic theme */
  --chess-square-dark: rgba(20, 30, 50, 0.85);
  --chess-square-light: rgba(30, 50, 80, 0.65);
  --about-link-color: #9fd6ff;
  --about-link-hover-color: #c8e8ff;
}

/* Light Theme */
.light-theme {
  --bg-primary: #F5F5F5;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #E8E8E8;
  --bg-elevated: #FFFFFF;
  --text-primary: #1A1A1A;
  --text-secondary: #444444;
  --text-tertiary: #666666;
  --border-color: #C0C0C0;
  --border-subtle: #D8D8D8;
  /* Stat-card foregrounds for a light sidebar (light + crimson themes). */
  --stat-blue: #0067C0;
  --stat-green: #107C10;
  --stat-purple: #7A3FBF;
  /* Amber fails on light surfaces; a darker gold clears >=4.5:1 on white. */
  --ms-yellow-fg: #8A6A00;
  /* Light track is pale, so the accent + purple already clear 3:1. */
  --progress-from: #0078D4;
  --progress-to: #5C2D91;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
  
  /* Graph-specific light mode colors */
  --graph-bg: #FCFCFC;
  --graph-node-text: #2A2A2A;
  --graph-edge-color: #888888;
  --graph-edge-text: #555555;
  --graph-edge-label-bg: #F2F2F2;
  
  /* Chess board pattern colors for light mode - futuristic theme */
  --chess-square-dark: rgba(220, 230, 245, 0.8);
  --chess-square-light: rgba(240, 245, 255, 0.9);
  --about-link-color: #004578;
  --about-link-hover-color: #003a63;
}

/* Aurora theme — deep teal base with mint accents (dark) */
.theme-aurora {
  --ms-blue: #2AAA92;
  --ms-blue-dark: #1F8D78;
  --ms-blue-light: #3FD0B4;
  --info: #2AAA92;
  --ms-cyan: #6AD6F9;
  /* Keep the mint accent as the progress-bar start (clears 3:1 on the track). */
  --progress-from: #2AAA92;

  --bg-primary: #0E2B27;
  --bg-secondary: #14352F;
  --bg-tertiary: #1C463E;
  --bg-elevated: #173E37;
  --text-primary: #EAFBF6;
  --text-secondary: #A6D2C8;
  --text-tertiary: #8AB0A6;
  --border-color: #265C53;
  --border-subtle: #1C4640;
  /* Aurora's accent is mint (#2AAA92); white text on it fails AA, so accent
     fills use a deep teal foreground instead. */
  --on-accent: #08221D;

  --shadow-glow: 0 0 20px rgba(42, 170, 146, 0.35);

  --graph-bg: #0F2D28;
  --graph-node-text: #C2E6DC;
  --graph-edge-color: #4F8C7F;
  --graph-edge-text: #8FBDB2;
  --graph-edge-label-bg: #0C2622;

  --chess-square-dark: rgba(8, 40, 36, 0.85);
  --chess-square-light: rgba(16, 64, 58, 0.6);
  --about-link-color: #6DE9BB;
  --about-link-hover-color: #ABE88E;
}

/* Crimson theme — clean light surfaces with a crimson accent (light) */
.theme-crimson {
  --ms-blue: #D6002A;
  --ms-blue-dark: #A8001F;
  --ms-blue-light: #E63956;
  --info: #D6002A;
  /* Crimson accent as the progress-bar start (clears 3:1 on the light track). */
  --progress-from: #D6002A;

  --bg-primary: #F8F9FA;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #EEF0F2;
  --bg-elevated: #FFFFFF;
  --text-primary: #1B1F24;
  --text-secondary: #495057;
  --text-tertiary: #656D75;
  --border-color: #D6DAE0;
  --border-subtle: #E3E6EA;

  --shadow-glow: 0 0 20px rgba(214, 0, 42, 0.22);

  --graph-bg: #FFFFFF;
  --graph-node-text: #1B1F24;
  --graph-edge-color: #8A9198;
  --graph-edge-text: #646B72;
  --graph-edge-label-bg: #FBF7F8;

  /* Opaque light base so the canvas reads light (the dark body must not show
     through); faint crimson squares keep the branded checker pattern. */
  --chess-square-dark: rgba(214, 0, 42, 0.07);
  --chess-square-light: #FBF7F8;
  --about-link-color: #A8001F;
  --about-link-hover-color: #D6002A;
}

/* Theme picker (header) */
.theme-picker {
  position: relative;
  display: inline-flex;
}

.theme-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 172px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.theme-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: none;
  color: var(--text-primary);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  text-align: left;
  transition: background var(--transition-fast);
}

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

.theme-menu-item.active {
  color: var(--ms-blue);
  font-weight: 600;
}

.theme-menu-item .theme-check {
  margin-left: auto;
}

.theme-swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.mobile-menu-themes {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-top: 1px solid var(--border-subtle);
  margin-top: 4px;
  padding-top: 4px;
}

.mobile-menu-themes .theme-check {
  margin-left: auto;
}

.mobile-menu-item.active {
  color: var(--ms-blue);
  font-weight: 600;
}

.about-link {
  color: var(--about-link-color);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 600;
}

.about-link:hover {
  color: var(--about-link-hover-color);
}

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

html, body, #root {
  height: 100%;
  font-family: var(--font-primary);
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
}

/* App Layout */
.app-container {
  display: grid;
  grid-template-columns: 280px 1fr 360px;
  grid-template-rows: 64px 1fr;
  height: 100vh;
  height: 100dvh;
  gap: 0;
}

/* Header */
.header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.header-logo svg {
  width: 32px;
  height: 32px;
}

.header-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.header-title-preview {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-left: 6px;
}

.header-context {
  font-size: 12px;
  color: var(--text-secondary);
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.stat-value {
  font-weight: 600;
  color: var(--ms-yellow-fg);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Icon Buttons */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

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

/* Tooltips */
.icon-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 10px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 12px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.icon-btn[data-tooltip]:hover::after {
  opacity: 1;
}

/* Header Text Button */
.header-text-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.header-text-btn:hover {
  background: var(--ms-blue);
  border-color: var(--ms-blue);
  color: var(--on-accent);
}

/* Left Panel - Quest Panel */
.quest-panel {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--text-primary);
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.panel-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.quest-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.quest-card {
  padding: 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.quest-card:hover {
  border-color: var(--ms-blue);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.quest-card.active {
  border-color: var(--ms-blue);
  background: rgba(0, 120, 212, 0.1);
}

.quest-card.completed {
  border-color: var(--ms-green);
  opacity: 0.8;
}

.quest-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 8px;
}

.quest-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.quest-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-transform: uppercase;
}

.quest-badge.beginner {
  background: var(--ms-green);
  color: white;
}

.quest-badge.intermediate {
  background: var(--ms-yellow);
  color: black;
}

.quest-badge.advanced {
  background: var(--ms-purple);
  color: white;
}

.quest-description {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.quest-reward {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: #9a9a9a;
}

.quest-points {
  color: var(--ms-yellow-fg);
  font-weight: 600;
}

/* Active Quest Display */
.active-quest-panel {
  padding: 20px;
  background: linear-gradient(135deg, rgba(0, 120, 212, 0.1), rgba(92, 45, 145, 0.1));
  border-radius: var(--radius-lg);
  margin: 12px;
  border: 1px solid var(--ms-blue);
}

.active-quest-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ms-blue);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.quest-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--progress-from), var(--progress-to));
  transition: width var(--transition-normal);
}

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

.current-step {
  padding: 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--ms-blue);
}

.step-instruction {
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.step-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  font-style: italic;
}

.quest-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: var(--ms-blue);
  color: var(--on-accent);
}

.btn-primary:hover {
  background: var(--ms-blue-dark);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

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

.btn-success {
  background: var(--ms-green);
  color: white;
}

/* Center - Graph Canvas */
.graph-container {
  position: relative;
  overflow: hidden;
  /* Fallback background for older browsers */
  background: var(--bg-primary);
  /* Chess board pattern background */
  background-image: 
    linear-gradient(45deg, var(--chess-square-dark) 25%, transparent 25%),
    linear-gradient(-45deg, var(--chess-square-dark) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--chess-square-dark) 75%),
    linear-gradient(-45deg, transparent 75%, var(--chess-square-dark) 75%);
  background-size: 40px 40px;
  background-position: 0 0, 0 20px, 20px -20px, -20px 0px;
  background-color: var(--chess-square-light);
}

.graph-canvas {
  width: 100%;
  height: 100%;
}

.graph-controls {
  position: absolute;
  bottom: 24px;
  left: 24px;
  display: flex;
  gap: 8px;
}

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

.graph-control-btn:hover {
  background: var(--ms-blue);
  color: var(--on-accent);
  border-color: var(--ms-blue);
}

/* Focus mode badge */
.graph-focus-badge {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(0, 120, 212, 0.92);
  color: white;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  pointer-events: none;
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.graph-focus-exit {
  background: rgba(255,255,255,0.2);
  border: none;
  color: white;
  font-size: 11px;
  font-family: inherit;
  padding: 2px 8px;
  border-radius: 10px;
  cursor: pointer;
  pointer-events: all;
}

.graph-focus-exit:hover {
  background: rgba(255,255,255,0.35);
}

.graph-legend {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  min-width: 180px;
}

.legend-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-primary);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

/* Right Sidebar Container */
.right-sidebar {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
}

/* Search Filter Section */
.search-filter-section {
  flex-shrink: 0;
  padding: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

/* Right Panel - Inspector */
.inspector-panel {
  flex-shrink: 0;
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
}

.inspector-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
}

.inspector-empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.inspector-empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.inspector-empty-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.inspector-content {
  padding: 20px;
}

.entity-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.entity-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-tertiary);
}

.entity-info h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.entity-info p {
  font-size: 13px;
  color: var(--text-secondary);
}

.inspector-section {
  margin-bottom: 24px;
}

.section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.property-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.property-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 12px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

/* Two-line relationship layout */
.rel-item {
  flex-direction: column;
  gap: 4px;
}

.rel-item-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  overflow: hidden;
}

.rel-item-arrow {
  color: var(--ms-blue);
  flex-shrink: 0;
}

.rel-item-entity {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rel-item-cardinality {
  font-size: 11px;
  color: var(--ms-blue);
  font-family: var(--font-mono);
}

.property-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.property-type {
  font-size: 12px;
  color: var(--ms-blue);
  font-family: var(--font-mono);
}

.property-identifier {
  font-size: 10px;
  padding: 2px 6px;
  background: var(--ms-yellow);
  color: black;
  border-radius: var(--radius-sm);
  font-weight: 600;
  margin-left: 8px;
}

/* Query Playground */
.query-section {
  padding: 20px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.query-input-container {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.query-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-primary);
}

.query-input:focus {
  outline: none;
  border-color: var(--ms-blue);
  box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.2);
}

.query-input::placeholder {
  color: var(--text-tertiary);
}

.query-result {
  padding: 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--ms-green);
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
  white-space: pre-wrap;
}

/* Badges Panel */
.badges-panel {
  padding: 12px;
  border-top: 1px solid var(--border-color);
}

.badges-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.badge-locked {
  opacity: 0.4;
  filter: grayscale(1);
}

/* Data Binding Visualization */
.binding-card {
  padding: 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  margin-bottom: 12px;
  color: var(--text-primary);
}

.binding-source {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.binding-source-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ms-blue);
  border-radius: var(--radius-sm);
  color: var(--on-accent);
  font-size: 16px;
}

.binding-source-info {
  flex: 1;
}

.binding-source-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.binding-source-table {
  font-size: 12px;
  color: var(--ms-cyan);
  font-family: var(--font-mono);
}

.column-mapping {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border-subtle);
}

.column-mapping:last-child {
  border-bottom: none;
}

.column-property {
  flex: 1;
  color: var(--text-primary);
}

.column-arrow {
  color: var(--text-tertiary);
}

.column-source {
  flex: 1;
  color: var(--ms-cyan);
  font-family: var(--font-mono);
  text-align: right;
}

/* Relationship Inspector */
.relationship-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.relationship-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--ms-blue), var(--ms-purple));
  color: white;
}

.relationship-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}

.relationship-entity {
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  text-align: center;
}

.relationship-entity-icon {
  font-size: 24px;
  margin-bottom: 4px;
}

.relationship-entity-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.relationship-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--ms-blue);
}

.relationship-arrow-name {
  font-size: 12px;
  font-weight: 600;
}

.relationship-arrow-icon {
  font-size: 20px;
}

.cardinality-badge {
  padding: 4px 12px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Animations */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--ms-blue); }
  50% { box-shadow: 0 0 20px var(--ms-blue), 0 0 30px var(--ms-blue); }
}

.highlight-pulse {
  animation: pulse 1.5s ease-in-out infinite;
}

.highlight-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Welcome Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s;
  z-index: 1;
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 600px;
  width: 90%;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
}

.modal-content h2 {
  color: var(--text-primary);
}

.modal-content p {
  color: var(--text-secondary);
}

.modal-header {
  text-align: center;
  margin-bottom: 32px;
}

.modal-logo {
  font-size: 64px;
  margin-bottom: 16px;
}

.modal-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.modal-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
}

.modal-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.feature-card {
  padding: 20px;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.feature-icon {
  font-size: 24px;
  margin-bottom: 8px;
}

.feature-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.feature-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

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

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

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

/* Toast Notifications */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 16px 24px;
  background: var(--ms-green);
  color: white;
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
}

.toast-icon {
  font-size: 20px;
}

/* Responsive */
@media (max-width: 1200px) {
  .app-container {
    grid-template-columns: 260px 1fr 320px;
  }
  .app-container .app-footer {
    left: 260px;
    right: 320px;
  }
}

@media (max-width: 900px) {
  .app-container .app-footer {
    display: none;
  }
  /* Switch from CSS grid to flexbox on mobile — much more reliable across
     iOS Safari, Chrome mobile, and various viewport quirks. */
  .app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
  }

  .header {
    flex-shrink: 0;
    height: 56px;
    padding: 0 12px;
  }

  .quest-panel,
  .right-sidebar {
    display: none;
  }

  .header-stats {
    display: none;
  }

  .header-actions {
    display: none;
  }

  .header-mobile-menu {
    display: flex;
  }

  /* Graph fills space between header and bottom tabs */
  .graph-container {
    flex: 1;
    min-height: 0;
    overflow: hidden;
  }

  /* Mobile bottom tabs */
  .mobile-panel-tabs {
    display: flex;
    flex-shrink: 0;
    padding-bottom: calc(4px + env(safe-area-inset-bottom, 0px));
  }

  .graph-legend {
    display: none;
  }

  .graph-controls {
    bottom: 12px;
    left: 12px;
  }
}

/* Small phones */
@media (max-width: 480px) {
  .header-logo svg {
    width: 28px;
    height: 28px;
  }

  .header-title {
    font-size: 15px;
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .header-context {
    display: none;
  }

  .modal-content {
    padding: 20px;
    width: 100%;
    max-width: 100%;
    max-height: 100%;
    border-radius: 0;
    height: 100%;
  }

  .modal-overlay {
    padding: 0;
  }

  .modal-features {
    grid-template-columns: 1fr;
  }

  .modal-logo {
    font-size: 48px;
  }

  .modal-title {
    font-size: 22px;
  }
}

/* NL Builder Modal */
.nl-builder-modal {
  max-width: 700px;
  width: 90vw;
}

.nl-builder-modal .modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  margin-bottom: 20px;
}

.nl-builder-modal .modal-header h2 {
  margin: 0;
  font-size: 18px;
}

/* .modal-close base styles are now shared — no per-modal overrides needed */

.nl-input-textarea {
  width: 100%;
  min-height: 120px;
  padding: 16px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  resize: vertical;
}

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

/* Voice Input Styles */
.nl-input-wrapper {
  position: relative;
}

.nl-input-wrapper .nl-input-textarea {
  padding-right: 56px;
}

.voice-btn {
  position: absolute;
  right: 12px;
  top: 12px;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.voice-btn:hover {
  background: var(--accent);
  color: white;
}

.voice-btn.recording {
  background: #E81123;
  color: white;
  animation: pulse-recording 1.5s ease-in-out infinite;
}

@keyframes pulse-recording {
  0%, 100% { 
    box-shadow: 0 0 0 0 rgba(232, 17, 35, 0.4);
  }
  50% { 
    box-shadow: 0 0 0 12px rgba(232, 17, 35, 0);
  }
}

.recording-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 12px;
  background: rgba(232, 17, 35, 0.1);
  border-radius: 8px;
  font-size: 13px;
  color: #E81123;
}

.recording-dot {
  width: 8px;
  height: 8px;
  background: #E81123;
  border-radius: 50%;
  animation: blink 1s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.example-prompts {
  margin-top: 16px;
}

.example-prompts h4 {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.example-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.example-chip {
  padding: 6px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.example-chip:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.nl-generate-btn {
  margin-top: 20px;
  width: 100%;
  padding: 12px 24px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.nl-generate-btn:hover:not(:disabled) {
  background: #106ebe;
}

.nl-generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.nl-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  gap: 16px;
  color: var(--text-secondary);
}

.nl-preview {
  max-height: 60vh;
  overflow-y: auto;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.preview-header h3 {
  margin: 0;
  color: var(--text-primary);
}

.preview-section {
  margin-bottom: 20px;
}

.preview-section h4 {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.preview-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preview-item {
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.json-editor {
  width: 100%;
  min-height: 200px;
  max-height: 300px;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 12px;
  resize: vertical;
}

.json-editor:focus {
  outline: none;
  border-color: var(--accent);
}

.preview-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.preview-actions .btn-primary {
  flex: 1;
  padding: 12px 24px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.preview-actions .btn-primary:hover {
  background: #106ebe;
}

.preview-actions .btn-secondary {
  flex: 1;
  padding: 12px 24px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}

.preview-actions .btn-secondary:hover {
  background: var(--bg-tertiary);
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spin {
  animation: spin 1s linear infinite;
}

/* Ontology Summary Modal */
.ontology-summary-modal {
  max-width: 800px;
  width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.ontology-summary-modal .modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.ontology-summary-modal .modal-header h2 {
  margin: 0;
  font-size: 18px;
}

.summary-content {
  flex: 1;
  overflow-y: auto;
  padding-right: 8px;
}

.summary-section {
  margin-bottom: 24px;
}

.summary-section h3 {
  font-size: 20px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.summary-section h4 {
  font-size: 14px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.summary-description {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 14px;
}

.summary-entities {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.summary-entity-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 16px;
}

.entity-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.entity-icon-large {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.entity-card-header strong {
  font-size: 16px;
  color: var(--text-primary);
  display: block;
  margin-bottom: 4px;
}

.entity-card-header p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}

.entity-properties {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.property-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--bg-tertiary);
  border-radius: 6px;
  font-size: 12px;
}

.prop-name {
  color: var(--text-primary);
  font-weight: 500;
}

.prop-type {
  color: var(--ms-cyan);
  font-family: var(--font-mono);
  font-size: 11px;
}

.prop-id-badge {
  background: var(--ms-yellow);
  color: black;
  font-size: 9px;
  font-weight: 600;
  padding: 2px 5px;
  border-radius: 3px;
}

.summary-relationships {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.summary-relationship-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 14px;
}

.relationship-flow-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.rel-entity {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.rel-arrow {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ms-blue);
  font-size: 16px;
}

.rel-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ms-blue);
}

.relationship-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.rel-description {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ═══════════════════════════════════════════════════════════════════════════
   Ontology Designer (§6)
   ═══════════════════════════════════════════════════════════════════════════ */

.designer-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* Top bar */
.designer-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.designer-back-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 13px;
  transition: background var(--transition-fast);
}
.designer-back-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.designer-meta-fields {
  display: flex;
  gap: 12px;
  flex: 1;
}

.designer-meta-name {
  font-size: 16px;
  font-weight: 600;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-primary);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  width: 260px;
}
.designer-meta-name:focus {
  border-color: var(--ms-blue);
  outline: none;
}

.designer-meta-desc {
  font-size: 13px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  flex: 1;
}
.designer-meta-desc:focus {
  border-color: var(--ms-blue);
  outline: none;
}

/* Split pane */
.designer-split {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.designer-sidebar {
  width: 380px;
  min-width: 320px;
  overflow-y: auto;
  border-right: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Template picker ───────────────────────────────────── */

.template-picker {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.template-picker-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px;
}

.template-picker-header p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
}

.template-picker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.template-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  text-align: center;
}

.template-card:hover {
  border-color: var(--ms-blue);
  box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.15);
}

.template-card-icon {
  font-size: 24px;
  line-height: 1;
}

.template-card-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.template-card-desc {
  font-size: 11px;
  color: var(--text-tertiary);
  line-height: 1.3;
}

/* Preview pane */
.designer-preview {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

.designer-preview-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.designer-tab {
  padding: 10px 24px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.designer-tab:hover {
  color: var(--text-primary);
}
.designer-tab.active {
  color: var(--ms-blue);
  border-bottom-color: var(--ms-blue);
}

.designer-graph-container {
  flex: 1;
  min-height: 200px;
}

.designer-rdf-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.designer-rdf-toolbar {
  padding: 8px 12px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
}
.designer-rdf-source {
  flex: 1;
  overflow: auto;
  padding: 16px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-secondary);
}
.designer-rdf-textarea {
  resize: none;
  border: none;
  outline: none;
  background: var(--bg-primary);
  color: var(--text-primary);
}
.designer-rdf-textarea::placeholder {
  color: var(--text-tertiary, #999);
}
.designer-import-error {
  padding: 6px 12px;
  font-size: 12px;
  color: #d83b01;
  background: rgba(216, 59, 1, 0.08);
  border-bottom: 1px solid var(--border-color);
}
.designer-add-btn.small.secondary {
  background: var(--bg-tertiary, #e0e0e0);
  color: var(--text-primary);
}

/* Section headers */
.designer-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.designer-section-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.designer-section-header span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Add / action buttons */
.designer-add-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--ms-blue);
  color: var(--on-accent);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.designer-add-btn:hover { background: var(--ms-blue-dark); }
.designer-add-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.designer-add-btn.small { padding: 2px 8px; font-size: 11px; }

.designer-empty {
  font-size: 13px;
  color: var(--text-tertiary);
  padding: 12px;
  text-align: center;
}

/* Entity cards */
.designer-entity-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.designer-entity-card.selected {
  border-color: var(--ms-blue);
}

.designer-entity-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  cursor: pointer;
  background: var(--bg-tertiary);
  transition: background var(--transition-fast);
}
.designer-entity-header:hover { background: var(--bg-elevated); }

.designer-expand-btn {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 0;
  display: flex;
}

.designer-entity-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.designer-entity-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.designer-entity-badge {
  font-size: 11px;
  color: var(--text-tertiary);
  background: var(--bg-primary);
  padding: 2px 8px;
  border-radius: 100px;
}

.designer-delete-btn {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: flex;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.designer-delete-btn:hover { color: var(--ms-red); background: rgba(232,17,35,0.1); }
.designer-delete-btn.small { padding: 2px; }

/* Entity body (expanded) */
.designer-entity-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--border-color);
}

/* Form fields */
.designer-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.designer-field > span {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.designer-field input[type="text"],
.designer-field textarea,
.designer-field select {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 6px 8px;
  font-size: 13px;
  font-family: var(--font-primary);
  resize: vertical;
}
.designer-field input:focus,
.designer-field textarea:focus,
.designer-field select:focus {
  outline: none;
  border-color: var(--ms-blue);
}

.designer-field-row {
  display: flex;
  gap: 8px;
}
.designer-field-row .designer-field { flex: 1; }

/* Validation hints */
.designer-field-hint {
  display: block;
  font-size: 11px;
  line-height: 1.3;
  margin-top: 2px;
  padding: 0 2px;
}
.designer-field-hint.error {
  color: var(--color-error, #e81123);
}
.designer-id-btn.warning {
  color: var(--color-error, #e81123);
  border-color: var(--color-error, #e81123);
}

/* Icon & color grids */
.designer-icon-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.designer-icon-btn {
  width: 32px;
  height: 32px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast);
}
.designer-icon-btn.active,
.designer-icon-btn:hover {
  border-color: var(--ms-blue);
}

.designer-color-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.designer-color-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.designer-color-btn.active {
  border-color: var(--text-primary);
  transform: scale(1.2);
}
.designer-color-btn:hover {
  transform: scale(1.15);
}

/* Property rows */
.designer-property-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.designer-property-row {
  display: flex;
  align-items: center;
  gap: 4px;
}
.designer-grip {
  color: var(--text-tertiary);
  cursor: grab;
  display: flex;
  padding: 2px;
}
.designer-prop-name {
  flex: 1;
  min-width: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 4px 6px;
  font-size: 12px;
}
.designer-prop-name:focus {
  outline: none;
  border-color: var(--ms-blue);
}
.designer-prop-type {
  width: 90px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  padding: 4px 6px;
  font-size: 12px;
}
.designer-prop-type:focus {
  outline: none;
  border-color: var(--ms-blue);
}

.designer-id-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 3px;
  display: flex;
  transition: all var(--transition-fast);
}
.designer-id-btn.active {
  color: var(--ms-yellow-fg);
  border-color: var(--ms-yellow-fg);
  background: rgba(255, 185, 0, 0.1);
}

/* Relationship cards */
.designer-rel-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}
.designer-rel-card.selected { border-color: var(--ms-blue); }

.designer-rel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-tertiary);
}
.designer-rel-header:hover { background: var(--bg-elevated); }

.designer-rel-flow {
  font-size: 13px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 4px;
}
.designer-rel-arrow {
  color: var(--ms-blue);
  font-weight: 600;
  margin: 0 4px;
}

.designer-rel-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--border-color);
}

/* Toolbar (in topbar) */
.designer-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-shrink: 0;
}

.designer-toolbar-sep {
  width: 1px;
  height: 20px;
  background: var(--border-color);
  margin: 0 4px;
}

.designer-toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.designer-toolbar-btn:hover {
  background: var(--ms-blue);
  color: var(--on-accent);
  border-color: var(--ms-blue);
}
.designer-toolbar-btn:disabled {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
}
.designer-toolbar-btn.submit {
  background: #24292e;
  color: #fff;
  border-color: #24292e;
}
.designer-toolbar-btn.submit:hover {
  background: #2f363d;
  border-color: #2f363d;
}

/* Validation errors */
.designer-validation-errors {
  margin-top: 10px;
  padding: 10px 12px;
  background: rgba(232, 17, 35, 0.08);
  border: 1px solid rgba(232, 17, 35, 0.3);
  border-radius: var(--radius-md);
}
.designer-validation-success {
  margin-top: 10px;
  padding: 10px 12px;
  background: rgba(22, 198, 12, 0.08);
  border: 1px solid rgba(22, 198, 12, 0.3);
  border-radius: var(--radius-md);
  animation: designer-fade-in 0.2s ease-out;
}
@keyframes designer-fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.designer-validation-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ms-red);
  margin-bottom: 6px;
}
.designer-validation-errors ul {
  list-style: none;
  padding: 0;
}
.designer-validation-errors li {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 2px 0;
}
.designer-validation-errors li::before {
  content: '• ';
  color: var(--ms-red);
}
.designer-error-link {
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
}
.designer-error-link:hover {
  color: var(--text-primary);
}

.designer-success-msg {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ms-green);
}

/* Shared button style (used in submit modal) */
.designer-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast);
  text-decoration: none;
}
.designer-action-btn.primary {
  background: var(--ms-blue);
  color: var(--on-accent);
}
.designer-action-btn.primary:hover { background: var(--ms-blue-dark); }
.designer-action-btn.secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.designer-action-btn.secondary:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* ── Submit to Catalogue Modal ── */

.submit-catalogue-modal {
  max-width: 480px;
}

.submit-step {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.submit-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.submit-description a {
  color: var(--ms-blue);
}

.device-code-display {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  padding: 12px;
  background: var(--bg-elevated);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.device-code {
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--text-primary);
}

.submit-user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.submit-avatar {
  border-radius: 50%;
}

.submit-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.submit-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.submit-label input,
.submit-label textarea,
.submit-label select {
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: inherit;
  resize: vertical;
}

.submit-label input:focus,
.submit-label textarea:focus,
.submit-label select:focus {
  outline: none;
  border-color: var(--ms-blue);
  box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.15);
}

.submit-form-row {
  display: flex;
  gap: 12px;
}

.submit-form-row .submit-label {
  flex: 1;
}

.submit-icon-input {
  width: 48px !important;
  text-align: center;
  font-size: 18px !important;
}

.submit-hint-inline {
  font-weight: 400;
  color: var(--text-tertiary);
}

.submit-form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 8px;
}

.submit-center {
  align-items: center;
  text-align: center;
}

.submit-success-icon {
  color: var(--ms-green);
}

.submit-success-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--ms-green);
}

.submit-error-icon {
  color: var(--ms-red);
}

.submit-error-text {
  color: var(--ms-red);
  font-size: 14px;
}

.submit-instructions {
  margin-top: 4px;
}

.submit-instructions h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.submit-instructions ol {
  padding-left: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.submit-instructions ol a {
  color: var(--ms-blue);
}

.submit-instructions code {
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 12px;
  background: var(--bg-elevated);
  padding: 1px 5px;
  border-radius: 4px;
}

.submit-download-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.submit-fallback {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-tertiary);
}

.submit-hint {
  font-size: 13px;
  color: var(--text-tertiary);
  text-align: center;
}

.designer-action-btn.submit {
  background: #24292e;
  color: #fff;
  border: none;
}

.designer-action-btn.submit:hover {
  background: #2f363d;
}

.designer-action-btn.small {
  padding: 4px 8px;
  font-size: 12px;
  min-width: unset;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  animation: spin 1s linear infinite;
}

/* ========================================================================
   Learn Page
   ======================================================================== */

.learn-page {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-primary);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.learn-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
  position: sticky;
  top: 0;
  z-index: 10;
}

.learn-back-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--ms-blue);
  font: 500 14px/1 var(--font-primary);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}
.learn-back-btn:hover {
  background: var(--bg-tertiary);
}

.learn-header-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 600 16px/1 var(--font-primary);
  color: var(--text-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}
.learn-header-title:hover {
  background: var(--bg-tertiary);
}

.learn-loading,
.learn-error {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  font-size: 15px;
  color: var(--text-secondary);
}
.learn-error { color: var(--error); }

/* --- Article index --- */

.learn-index {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  width: 100%;
}

.learn-index-hero {
  text-align: center;
  margin-bottom: 48px;
}
.learn-index-hero h1 {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--text-primary);
}
.learn-index-hero p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.6;
}

.learn-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.learn-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  cursor: pointer;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.learn-card:hover {
  border-color: var(--ms-blue);
  box-shadow: var(--shadow-md);
}

.learn-card-order {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  border-radius: 14px;
  padding: 0 10px;
  background: var(--ms-blue);
  color: var(--on-accent);
  font: 700 12px/1 var(--font-primary);
  margin-bottom: 12px;
  white-space: nowrap;
}

.learn-card h2 {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--text-primary);
}
.learn-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0 0 auto;
  padding-bottom: 16px;
}

.learn-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 12px;
}

.learn-card-icon {
  font-size: 28px;
  line-height: 1;
}

.learn-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font: 600 11px/1 var(--font-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}
.learn-card-badge--lab {
  background: rgba(180, 0, 158, 0.12);
  color: #B4009E;
}
.learn-card-badge--path {
  background: rgba(0, 120, 212, 0.12);
  color: var(--ms-blue);
}

.learn-card-meta {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
}

.learn-card-cta {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--ms-blue);
  font: 500 13px/1 var(--font-primary);
  margin-top: 8px;
}

.learn-card-review-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font: 500 11px/1 var(--font-primary);
  color: #92400e;
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: 4px;
  padding: 3px 8px;
  margin-bottom: 4px;
}

[data-theme="dark"] .learn-card-review-badge {
  color: #fde68a;
  background: rgba(254, 243, 199, 0.12);
  border-color: rgba(253, 230, 138, 0.25);
}

/* --- Footer --- */

.app-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 32px 24px 48px;
  font: 400 13px/1 var(--font-primary);
  color: var(--text-tertiary);
}

/* In the playground grid, pin footer to bottom of graph area */
.app-container .app-footer {
  position: fixed;
  bottom: 4px;
  left: 280px;
  right: 360px;
  padding: 6px 12px;
  z-index: 50;
  pointer-events: none;
  justify-content: center;
}
.app-container .app-footer a,
.app-container .app-footer span {
  pointer-events: auto;
}

.app-footer a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.app-footer a:hover {
  color: var(--ms-blue);
}
.app-footer-sep {
  color: var(--text-tertiary);
}

/* --- Course detail header --- */

.learn-course-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}

.learn-course-icon {
  font-size: 36px;
  line-height: 1;
}

/* --- Article view --- */

.learn-article {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  width: 100%;
}

.learn-article-content h1 {
  font-size: 30px;
  font-weight: 700;
  margin: 0 0 24px;
  line-height: 1.3;
  color: var(--text-primary);
}
.learn-article-content h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 32px 0 12px;
  line-height: 1.3;
  color: var(--text-primary);
}
.learn-article-content h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 8px;
  color: var(--text-primary);
}
.learn-article-content p {
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 16px;
  color: var(--text-primary);
}
.learn-article-content a {
  color: var(--ms-blue);
  text-decoration: none;
}
.learn-article-content a:hover {
  text-decoration: underline;
}
.learn-article-content strong {
  font-weight: 600;
}
.learn-article-content em {
  color: var(--text-secondary);
}
.learn-article-content ul,
.learn-article-content ol {
  margin: 0 0 16px;
  padding-left: 24px;
}
.learn-article-content li {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.learn-article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 20px;
  font-size: 14px;
}
.learn-article-content th,
.learn-article-content td {
  text-align: left;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}
.learn-article-content th {
  background: var(--bg-tertiary);
  font-weight: 600;
}

.learn-article-content pre {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-x: auto;
  margin: 0 0 20px;
}
.learn-article-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-primary);
}
.learn-article-content p code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 13px;
}

/* Embed slot inside article */
.learn-embed-slot {
  margin: 20px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.learn-embed-fullscreen {
  position: fixed !important;
  inset: 0 !important;
  z-index: 1500;
  width: 100vw !important;
  height: 100vh !important;
  margin: 0 !important;
  border-radius: 0 !important;
  border: none !important;
}
/* When maximised inside presentation mode, sit above the overlay */
.presentation-overlay .learn-embed-fullscreen {
  z-index: 2100;
}
.learn-embed-error {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-tertiary);
  font-size: 13px;
}

/* --- Article toolbar & Present button --- */

.learn-article-toolbar {
  display: flex;
  justify-content: flex-end;
  padding: 0 0 12px 0;
}

.learn-present-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font: 500 13px/1 'Segoe UI', sans-serif;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.learn-present-btn:hover {
  border-color: var(--ms-blue);
  background: var(--ms-blue);
  color: var(--on-accent);
}

/* --- Presentation overlay --- */

.presentation-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  background: #0D1117;
  color: #E6E6E6;
  font-family: 'Segoe UI', system-ui, sans-serif;
}
.presentation-overlay.light-theme {
  background: #FAFBFC;
  color: #1F2328;
}

/* Chrome: close + theme toggle */
.presentation-chrome {
  position: absolute;
  top: 56px;
  right: 20px;
  display: flex;
  gap: 8px;
  z-index: 2200;
}
.presentation-close,
.presentation-theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.15s;
}
.presentation-close {
  background: rgba(255,255,255,0.1);
  color: #ccc;
}
.light-theme .presentation-close {
  background: rgba(0,0,0,0.06);
  color: #555;
}
.presentation-close:hover {
  background: rgba(255,255,255,0.2);
}
.light-theme .presentation-close:hover {
  background: rgba(0,0,0,0.12);
}
.presentation-theme-toggle {
  background: rgba(255,255,255,0.1);
  color: #ccc;
}
.light-theme .presentation-theme-toggle {
  background: rgba(0,0,0,0.06);
  color: #555;
}
.presentation-theme-toggle:hover {
  background: rgba(255,255,255,0.2);
}
.light-theme .presentation-theme-toggle:hover {
  background: rgba(0,0,0,0.12);
}

/* Stage: nav arrows + slide */
.presentation-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px 24px 24px;
  min-height: 0;
}

.presentation-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: #999;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}
.light-theme .presentation-nav {
  background: rgba(0,0,0,0.05);
  color: #888;
}
.presentation-nav:hover:not(:disabled) {
  background: rgba(255,255,255,0.16);
  color: #fff;
}
.light-theme .presentation-nav:hover:not(:disabled) {
  background: rgba(0,0,0,0.1);
  color: #333;
}
.presentation-nav:disabled {
  opacity: 0.25;
  cursor: default;
}

/* Slide content area */
.presentation-slide-wrapper {
  flex: 1;
  max-width: 900px;
  max-height: 100%;
  overflow-y: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.presentation-slide {
  width: 100%;
  padding: 40px 48px;
  animation: slideIn 0.25s ease-out;
}
.presentation-slide h1 {
  font-size: 2.4em;
  margin-bottom: 24px;
}
.presentation-slide h2 {
  font-size: 1.8em;
  margin-bottom: 20px;
}
.presentation-slide p,
.presentation-slide li {
  font-size: 1.15em;
  line-height: 1.7;
}
.presentation-slide table {
  font-size: 1em;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Footer: progress bar + counter */
.presentation-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px 16px;
  flex-shrink: 0;
}

.presentation-progress {
  flex: 1;
  height: 3px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  overflow: hidden;
}
.light-theme .presentation-progress {
  background: rgba(0,0,0,0.08);
}
.presentation-progress-bar {
  height: 100%;
  background: #0078D4;
  border-radius: 2px;
  transition: width 0.3s ease;
}
.presentation-counter {
  font: 500 13px/1 'Segoe UI', sans-serif;
  color: #888;
  white-space: nowrap;
}
.presentation-next-hint {
  color: #0078D4;
  font-weight: 400;
}

/* ─── Quiz blocks ──────────────────────────────────────────────── */

/* Base styling before hydration — ensures quiz blocks are visible */
.quiz-block {
  border: 2px solid #0078D4;
  border-radius: 12px;
  padding: 16px;
  min-height: 50px;
  margin: 24px auto;
  max-width: 700px;
}

.quiz-interactive {
  background: #161B22;
  border: 1px solid #30363D;
  border-radius: 12px;
  padding: 32px;
  max-width: 700px;
  margin: 24px auto;
}
.light-theme .quiz-interactive {
  background: #F6F8FA;
  border-color: #D0D7DE;
}

/* Visible fallback before hydration */
.quiz-fallback {
  font: 600 1.2em/1.6 'Segoe UI', sans-serif;
  color: #8B949E;
  text-align: center;
  padding: 24px;
}

.quiz-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 24px;
}
.quiz-icon {
  flex-shrink: 0;
  color: #0078D4;
  margin-top: 2px;
}
.quiz-question {
  font: 600 1.3em/1.4 'Segoe UI', sans-serif;
  color: #E6EDF3;
}
.light-theme .quiz-question {
  color: #1F2328;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.quiz-option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border: 1.5px solid #30363D;
  border-radius: 10px;
  background: #0D1117;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  text-align: left;
  width: 100%;
}
.light-theme .quiz-option {
  border-color: #D0D7DE;
  background: #FFFFFF;
}
.quiz-option:hover:not(:disabled) {
  border-color: #0078D4;
  background: #0D1117;
  transform: translateX(4px);
}
.light-theme .quiz-option:hover:not(:disabled) {
  background: #EFF6FF;
}

.quiz-option-letter {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #21262D;
  color: #8B949E;
  font: 700 13px/30px 'Segoe UI', sans-serif;
  text-align: center;
}
.light-theme .quiz-option-letter {
  background: #E1E7ED;
  color: #57606A;
}

.quiz-option-text {
  font: 400 1.05em/1.4 'Segoe UI', sans-serif;
  color: #C9D1D9;
}
.light-theme .quiz-option-text {
  color: #1F2328;
}

/* Answered states */
.quiz-option:disabled {
  cursor: default;
  transform: none;
}
.quiz-option--correct {
  border-color: #2EA043 !important;
  background: rgba(46, 160, 67, 0.12) !important;
}
.quiz-option--correct .quiz-option-letter {
  background: #2EA043;
  color: #FFFFFF;
}
.quiz-option--wrong {
  border-color: #DA3633 !important;
  background: rgba(218, 54, 51, 0.12) !important;
}
.quiz-option--wrong .quiz-option-letter {
  background: #DA3633;
  color: #FFFFFF;
}
.quiz-option--dimmed {
  opacity: 0.4;
}

.quiz-result {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font: 600 1em/1 'Segoe UI', sans-serif;
  animation: slideIn 0.3s ease;
}
.quiz-result--correct {
  color: #2EA043;
}
.quiz-result--wrong {
  color: #DA3633;
}

.quiz-explanation {
  margin-top: 12px;
  padding: 14px 16px;
  background: #21262D;
  border-radius: 8px;
  font: 400 0.95em/1.6 'Segoe UI', sans-serif;
  color: #8B949E;
  animation: slideIn 0.3s ease;
}
.light-theme .quiz-explanation {
  background: #E1E7ED;
  color: #57606A;
}

/* Presentation mode: center quiz on slide */
.presentation-slide .quiz-interactive {
  margin: auto;
  max-width: 720px;
}

/* ─── End quiz blocks ──────────────────────────────────────────── */

/* --- Article navigation --- */

.learn-article-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.learn-nav-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  cursor: pointer;
  color: var(--text-primary);
  max-width: 48%;
  transition: border-color var(--transition-fast);
}
.learn-nav-btn:hover {
  border-color: var(--ms-blue);
}
.learn-nav-next {
  margin-left: auto;
  text-align: right;
}
.learn-nav-label {
  display: block;
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}
.learn-nav-title {
  display: block;
  font: 500 14px/1.3 var(--font-primary);
  color: var(--ms-blue);
}

/* ===== Mobile Menu & Panel Components ===== */

/* Hamburger button — hidden on desktop */
.header-mobile-menu {
  display: none;
  position: relative;
}

.header-hamburger {
  width: 40px;
  height: 40px;
}

/* ── Command palette ───────────────────────────────────── */

.command-palette-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: min(20vh, 160px);
  z-index: 2000;
}

.command-palette {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 520px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.command-palette-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
}

.command-palette-search-icon {
  color: var(--text-tertiary);
  flex-shrink: 0;
}

/* ── Ontology Stats Panel ─────────────────────────────────────── */
.stats-panel {
  flex-shrink: 0;
  border-bottom: 1px solid var(--border-subtle);
}

.stats-panel-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition-fast);
}

.stats-panel-header:hover {
  background: var(--bg-tertiary);
}

.stats-panel-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.stats-panel-body {
  padding: 12px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Metric cards grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.stat-card {
  border-radius: var(--radius-md);
  padding: 10px 8px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  border: 1px solid transparent;
}

.stat-card--blue {
  background: rgba(0, 120, 212, 0.12);
  border-color: rgba(0, 120, 212, 0.25);
}

.stat-card--purple {
  background: rgba(92, 45, 145, 0.12);
  border-color: rgba(92, 45, 145, 0.25);
}

.stat-card--green {
  background: rgba(16, 124, 16, 0.12);
  border-color: rgba(16, 124, 16, 0.25);
}

.stat-card-icon {
  opacity: 1;
}

.stat-card--blue .stat-card-icon { color: var(--stat-blue); }
.stat-card--purple .stat-card-icon { color: var(--stat-purple); }
.stat-card--green .stat-card-icon { color: var(--stat-green); }

.stat-card-value {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.stat-card--blue .stat-card-value { color: var(--stat-blue); }
.stat-card--purple .stat-card-value { color: var(--stat-purple); }
.stat-card--green .stat-card-value { color: var(--stat-green); }

.stat-card-label {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

/* Light theme adjustments for stat cards */
.light-theme .stat-card--blue {
  background: rgba(0, 120, 212, 0.08);
}
.light-theme .stat-card--purple {
  background: rgba(92, 45, 145, 0.08);
}
.light-theme .stat-card--green {
  background: rgba(16, 124, 16, 0.08);
}

.command-palette-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: 15px;
  color: var(--text-primary);
  font-family: inherit;
}

.command-palette-input::placeholder {
  color: var(--text-tertiary);
}

.command-palette-kbd {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-tertiary);
  font-family: inherit;
  line-height: 1.4;
}

.command-palette-list {
  max-height: 320px;
  overflow-y: auto;
  padding: 6px;
}

.command-palette-empty {
  text-align: center;
  padding: 24px 16px;
  color: var(--text-tertiary);
  font-size: 14px;
}

.command-palette-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  text-align: left;
  transition: background 0.1s;
}

.command-palette-item:hover,
.command-palette-item.selected {
  background: var(--bg-hover);
}

.command-palette-item-icon {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.command-palette-item-label {
  flex: 1;
}

.command-palette-shortcut {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-tertiary);
  font-family: inherit;
  line-height: 1.4;
  margin-left: auto;
}

.command-palette-footer {
  display: flex;
  gap: 16px;
  padding: 8px 16px;
  border-top: 1px solid var(--border-color);
  font-size: 11px;
  color: var(--text-tertiary);
}

.command-palette-footer span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.help-kbd {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-tertiary);
  font-family: inherit;
  text-align: center;
  line-height: 1.6;
  width: fit-content;
}

/* ── Guided tour ───────────────────────────────────────── */

.tour-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 3000;
  pointer-events: auto;
  transition: clip-path 0.35s ease;
}

.tour-tooltip {
  position: fixed;
  z-index: 3001;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  min-width: 260px;
}

.tour-tooltip-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.tour-tooltip-step {
  font-size: 11px;
  color: var(--ms-blue);
  font-weight: 600;
}

.tour-tooltip-close {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 2px;
  display: flex;
  border-radius: 4px;
}

.tour-tooltip-close:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.tour-tooltip-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 6px;
}

.tour-tooltip-desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0 0 14px;
}

.tour-tooltip-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.tour-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background 0.15s;
}

.tour-btn-primary {
  background: var(--ms-blue);
  color: var(--on-accent);
}

.tour-btn-primary:hover {
  background: #106ebe;
}

.tour-btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

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

.tour-skip {
  display: block;
  width: 100%;
  text-align: center;
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: 11px;
  cursor: pointer;
  padding: 4px 0 0;
}

.tour-skip:hover {
  color: var(--text-secondary);
  text-decoration: underline;
}

.mobile-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1001;
  min-width: 220px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mobile-menu-stats {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 4px;
}

.mobile-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  width: 100%;
  text-align: left;
}

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

/* Mobile panel bottom tabs — hidden on desktop */
.mobile-panel-tabs {
  display: none;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4px 8px;
  gap: 4px;
}

.mobile-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 4px;
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: 10px;
  font-family: inherit;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.mobile-tab.active {
  color: var(--ms-blue);
}

.mobile-tab:hover {
  color: var(--text-primary);
}

/* Mobile panel drawer — slides up over graph */
.mobile-panel-drawer {
  display: none;
}

@media (max-width: 900px) {
  .mobile-panel-drawer {
    display: flex;
    flex-direction: column;
    position: fixed;
    bottom: calc(48px + env(safe-area-inset-bottom, 0px));
    left: 0;
    right: 0;
    top: 56px;
    background: var(--bg-secondary);
    z-index: 500;
    overflow-y: auto;
    border-top: 1px solid var(--border-color);
  }

  .mobile-panel-close {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background: var(--bg-tertiary);
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
  }

  .mobile-panel-close:hover {
    color: var(--text-primary);
  }

  /* QuestPanel and InspectorPanel need flex adjustments inside the drawer */
  .mobile-panel-drawer .quest-panel,
  .mobile-panel-drawer .inspector-panel {
    display: flex;
    flex: 1;
    min-height: 0;
  }

  .mobile-panel-drawer .search-filter-section {
    flex-shrink: 0;
  }

  /* Re-declare display:flex AFTER the base display:none rules (lines ~2851
     and ~3176) so these win the cascade on mobile viewports. */
  .header-mobile-menu {
    display: flex;
  }

  .mobile-panel-tabs {
    display: flex;
    flex-shrink: 0;
    padding-bottom: calc(4px + env(safe-area-inset-bottom, 0px));
  }
}

/* ===== Responsive Gallery (inline styles need overrides) ===== */
@media (max-width: 600px) {
  .modal-content {
    padding: 16px;
    border-radius: var(--radius-lg);
    width: 95%;
    max-height: 90vh;
  }
}

/* ===== Responsive Designer ===== */
@media (max-width: 900px) {
  .designer-topbar {
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 12px;
  }

  .designer-meta-fields {
    flex-direction: column;
    gap: 6px;
    width: 100%;
  }

  .designer-meta-name {
    width: 100%;
  }

  .designer-meta-desc {
    width: 100%;
  }

  .designer-split {
    flex-direction: column;
  }

  .designer-sidebar {
    width: 100%;
    min-width: unset;
    max-height: 50vh;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .designer-preview {
    min-height: 40vh;
  }
}

/* ===== Responsive Learn Page ===== */
@media (max-width: 600px) {
  .learn-card-grid {
    grid-template-columns: 1fr;
  }

  .learn-header,
  .learn-index {
    padding-left: 16px;
    padding-right: 16px;
  }

  .learn-article {
    padding: 16px;
  }

  .learn-nav-btn {
    flex: 1;
  }

  .learn-article-nav {
    flex-direction: column;
  }
}

/* ── Path Finder Panel ────────────────────────────────────────── */
.pathfinder-panel {
  flex-shrink: 0;
  border-bottom: 1px solid var(--border-subtle);
}

.pathfinder-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition-fast);
}

.pathfinder-header:hover {
  background: var(--bg-tertiary);
}

.pathfinder-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.pathfinder-body {
  padding: 12px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* From / To selects row */
.pathfinder-selects {
  display: flex;
  align-items: flex-end;
  gap: 6px;
}

.pathfinder-select-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.pathfinder-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-tertiary);
}

.pathfinder-select {
  width: 100%;
  padding: 6px 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}

.pathfinder-select:focus {
  outline: none;
  border-color: var(--ms-blue);
}

.pathfinder-arrow-icon {
  color: var(--text-tertiary);
  flex-shrink: 0;
  margin-bottom: 4px;
}

/* Action buttons */
.pathfinder-actions {
  display: flex;
  gap: 6px;
}

.pathfinder-btn-find {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 7px 12px;
  background: var(--ms-blue);
  color: var(--on-accent);
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.pathfinder-btn-find:hover:not(:disabled) {
  background: var(--ms-blue-dark);
}

.pathfinder-btn-find:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pathfinder-btn-clear {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 7px 10px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

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

/* Messages */
.pathfinder-message {
  font-size: 12px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.pathfinder-message--warn {
  background: rgba(255, 185, 0, 0.1);
  border: 1px solid rgba(255, 185, 0, 0.3);
  color: var(--ms-yellow-fg);
}

/* Result chain */
.pathfinder-result {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pathfinder-result-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.pathfinder-chain {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pathfinder-chain-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* Relationship connector */
.pathfinder-chain-rel {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0 2px 20px;
}

.pathfinder-chain-rel-arrow {
  width: 1px;
  height: 16px;
  background: var(--ms-blue);
  position: relative;
}

.pathfinder-chain-rel-arrow::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: -3px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--ms-blue);
}

.pathfinder-chain-rel-name {
  font-size: 10px;
  font-style: italic;
  color: var(--ms-blue);
  font-weight: 500;
}

/* Entity node in chain */
.pathfinder-chain-node {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-tertiary);
  width: 100%;
}

.pathfinder-chain-node--start {
  border-color: var(--ms-green);
  background: rgba(16, 124, 16, 0.1);
}

.pathfinder-chain-node--end {
  border-color: var(--ms-orange);
  background: rgba(216, 59, 1, 0.1);
}

.pathfinder-chain-icon {
  font-size: 16px;
  line-height: 1;
}

.pathfinder-chain-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}