/* ========================================
   Linked Legends: The Chain of Destiny
   Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
  /* Primary Colors - Dark Fantasy Theme */
  --bg-primary: #0a0e17;
  --bg-secondary: #131a2b;
  --bg-tertiary: #1a2440;
  --bg-card: #1e2a47;

  /* Accent Colors */
  --accent-gold: #ffd700;
  --accent-blue: #00d4ff;
  --accent-purple: #9d4edd;
  --accent-green: #00ff88;
  --accent-red: #ff4757;
  --accent-orange: #ff9f43;

  /* Node Colors */
  --node-bg: linear-gradient(135deg, #2d3a5c 0%, #1a2440 100%);
  --node-border: #4a6fa5;
  --node-highlight: #00d4ff;
  --node-selected: #ffd700;

  /* Pointer Colors */
  --pointer-next: #00ff88;
  --pointer-prev: #ff9f43;
  --pointer-random: #9d4edd;
  --pointer-slow: #00d4ff;
  --pointer-fast: #ff4757;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #6b7280;

  /* Fonts */
  --font-display: 'Cinzel Decorative', serif;
  --font-body: 'Rajdhani', sans-serif;
  --font-code: 'Fira Code', monospace;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Borders */
  --border-radius: 8px;
  --border-radius-lg: 16px;

  /* Shadows */
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
  --shadow-gold: 0 0 20px rgba(255, 215, 0, 0.3);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset & Base */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

code,
pre {
  font-family: var(--font-code);
}

/* Screens */
.screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.screen.active {
  display: flex;
  opacity: 1;
}

/* ========================================
   Loading Screen
   ======================================== */
#loading-screen {
  background: radial-gradient(
    ellipse at center,
    var(--bg-secondary) 0%,
    var(--bg-primary) 100%
  );
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.loading-content {
  text-align: center;
}

.chain-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.loader-node {
  width: 30px;
  height: 30px;
  background: var(--node-bg);
  border: 2px solid var(--accent-blue);
  border-radius: 8px;
  animation: nodePulse 1.5s ease-in-out infinite;
  box-shadow: var(--shadow-glow);
}

.loader-node:nth-child(1) {
  animation-delay: 0s;
}
.loader-node:nth-child(3) {
  animation-delay: 0.3s;
}
.loader-node:nth-child(5) {
  animation-delay: 0.6s;
}

.loader-link {
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), var(--pointer-next));
  animation: linkPulse 1.5s ease-in-out infinite;
}

.loader-link:nth-child(2) {
  animation-delay: 0.15s;
}
.loader-link:nth-child(4) {
  animation-delay: 0.45s;
}

.game-title {
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 40px rgba(255, 215, 0, 0.3);
  margin-bottom: var(--spacing-sm);
}

.subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  font-family: var(--font-display);
  margin-bottom: var(--spacing-xl);
}

.loading-bar {
  width: 300px;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
  margin: 0 auto var(--spacing-md);
}

.loading-progress {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  transition: width var(--transition-normal);
}

.loading-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========================================
   Main Menu
   ======================================== */
#main-menu {
  background: radial-gradient(
    ellipse at top,
    var(--bg-secondary) 0%,
    var(--bg-primary) 70%
  );
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
}

.menu-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.floating-nodes {
  position: absolute;
  width: 100%;
  height: 100%;
}

.menu-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 600px;
  padding: var(--spacing-xl);
}

.logo-container {
  margin-bottom: var(--spacing-xl);
}

.logo {
  font-size: 3rem;
  background: linear-gradient(
    135deg,
    var(--accent-gold),
    var(--accent-orange),
    var(--accent-gold)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
  background-size: 200% auto;
}

.tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-top: var(--spacing-sm);
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: linear-gradient(
    135deg,
    var(--bg-card) 0%,
    var(--bg-tertiary) 100%
  );
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.menu-btn:hover {
  transform: translateY(-2px);
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-gold);
  background: linear-gradient(
    135deg,
    var(--bg-tertiary) 0%,
    var(--bg-card) 100%
  );
}

.menu-btn:active {
  transform: translateY(0);
}

.btn-icon {
  font-size: 1.3rem;
}

.lore-preview {
  padding: var(--spacing-lg);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
  border: 1px solid var(--bg-tertiary);
}

.lore-preview p {
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========================================
   Realm Selection
   ======================================== */
#realm-select {
  flex-direction: column;
  background: var(--bg-primary);
}

.realm-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--bg-tertiary);
}

.realm-header h1 {
  font-size: 1.8rem;
  color: var(--accent-gold);
}

.back-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.back-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.player-stats {
  display: flex;
  gap: var(--spacing-lg);
}

.stat {
  font-size: 1rem;
  color: var(--text-secondary);
}

.stat span {
  color: var(--accent-gold);
  font-weight: 600;
}

.realms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  overflow-y: auto;
  flex: 1;
}

.realm-card {
  background: var(--bg-card);
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.realm-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.realm-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow);
}

.realm-card:hover::before {
  opacity: 1;
}

.realm-card.locked {
  opacity: 0.5;
  cursor: not-allowed;
}

.realm-card.locked:hover {
  transform: none;
  border-color: var(--bg-tertiary);
  box-shadow: none;
}

.realm-card.completed {
  border-color: var(--accent-green);
}

.realm-card.completed::before {
  background: var(--accent-green);
  opacity: 1;
}

.realm-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.realm-number {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-xs);
}

.realm-title {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.realm-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.realm-progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  transition: width var(--transition-slow);
}

.progress-text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.realm-lock {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  opacity: 0.3;
}

/* ========================================
   Game Screen
   ======================================== */
#game-screen {
  flex-direction: column;
  background: var(--bg-primary);
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--bg-tertiary);
  z-index: 100;
}

.header-left,
.header-center,
.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: var(--bg-tertiary);
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow);
}

.realm-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--accent-gold);
}

.timer {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--border-radius);
  font-family: var(--font-code);
  font-size: 1.1rem;
}

.timer.warning {
  background: rgba(255, 71, 87, 0.2);
  color: var(--accent-red);
  animation: pulse 1s ease-in-out infinite;
}

.score,
.lives {
  font-size: 1.1rem;
  font-weight: 600;
}

.lives {
  color: var(--accent-red);
}

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

/* Educational Panel */
.edu-panel {
  width: 280px;
  background: var(--bg-secondary);
  border-right: 2px solid var(--bg-tertiary);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-normal);
}

.edu-panel.minimized {
  width: 50px;
}

.edu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--bg-tertiary);
}

.edu-header h3 {
  font-size: 1rem;
  color: var(--accent-blue);
}

.minimize-btn {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--node-border);
  border-radius: 4px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.minimize-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.edu-content {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

.edu-content h4 {
  font-size: 0.9rem;
  color: var(--accent-gold);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.edu-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.edu-content pre {
  background: var(--bg-primary);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  font-size: 0.8rem;
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

.edu-content code {
  color: var(--accent-green);
}

/* Game Canvas */
.game-canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#game-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.visual-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Control Panel */
.control-panel {
  width: 260px;
  background: var(--bg-secondary);
  border-left: 2px solid var(--bg-tertiary);
  display: flex;
  flex-direction: column;
}

.panel-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--bg-tertiary);
}

.panel-header h3 {
  font-size: 1rem;
  color: var(--accent-purple);
}

.panel-content {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

.control-group {
  margin-bottom: var(--spacing-lg);
}

.control-group h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.control-btn {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.control-btn:hover {
  border-color: var(--accent-blue);
  background: var(--bg-card);
}

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

.control-btn.active {
  border-color: var(--accent-gold);
  background: rgba(255, 215, 0, 0.1);
}

.control-input {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.control-input input {
  flex: 1;
  padding: var(--spacing-sm);
  font-family: var(--font-code);
  font-size: 0.9rem;
  background: var(--bg-primary);
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  color: var(--text-primary);
}

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

.control-input button {
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-body);
  font-weight: 600;
  background: var(--accent-blue);
  border: none;
  border-radius: var(--border-radius);
  color: var(--bg-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.control-input button:hover {
  background: var(--accent-green);
}

/* Code Panel */
.code-panel {
  position: absolute;
  bottom: 0;
  left: 280px;
  right: 260px;
  background: var(--bg-secondary);
  border-top: 2px solid var(--bg-tertiary);
  transition: transform var(--transition-normal);
}

.code-panel.collapsed {
  transform: translateY(calc(100% - 40px));
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  cursor: pointer;
}

.code-header span {
  font-size: 0.9rem;
  color: var(--accent-green);
}

.toggle-code {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  transition: transform var(--transition-fast);
}

.code-panel.collapsed .toggle-code {
  transform: rotate(180deg);
}

.code-content {
  display: flex;
  max-height: 200px;
  overflow: hidden;
}

#code-display {
  flex: 1;
  padding: var(--spacing-md);
  margin: 0;
  font-size: 0.85rem;
  background: var(--bg-primary);
  overflow-x: auto;
}

#code-display code {
  color: var(--text-secondary);
}

.pointer-tracker {
  width: 200px;
  padding: var(--spacing-md);
  background: var(--bg-card);
  border-left: 1px solid var(--bg-tertiary);
}

.pointer-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-code);
  font-size: 0.8rem;
}

.pointer-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.pointer-dot.curr {
  background: var(--accent-blue);
}
.pointer-dot.prev {
  background: var(--accent-orange);
}
.pointer-dot.next {
  background: var(--accent-green);
}
.pointer-dot.slow {
  background: var(--pointer-slow);
}
.pointer-dot.fast {
  background: var(--pointer-fast);
}

/* Memory Panel */
.memory-panel {
  position: absolute;
  right: 0;
  top: 60px;
  width: 200px;
  background: var(--bg-secondary);
  border-left: 2px solid var(--bg-tertiary);
  border-bottom: 2px solid var(--bg-tertiary);
  border-radius: 0 0 0 var(--border-radius);
  transition: transform var(--transition-normal);
  z-index: 50;
}

.memory-panel.collapsed {
  transform: translateX(calc(100% - 30px));
}

.memory-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
}

.memory-header span {
  font-size: 0.85rem;
  color: var(--accent-purple);
}

.memory-header button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
}

.memory-content {
  padding: var(--spacing-sm);
  max-height: 300px;
  overflow-y: auto;
}

.memory-item {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  background: var(--bg-primary);
  border-radius: 4px;
  font-family: var(--font-code);
  font-size: 0.75rem;
}

.memory-addr {
  color: var(--accent-purple);
}

.memory-value {
  color: var(--text-primary);
}

/* ========================================
   Overlays & Modals
   ======================================== */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity var(--transition-normal);
}

.overlay.hidden {
  display: none;
  opacity: 0;
}

.overlay-content {
  background: var(--bg-secondary);
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  max-width: 500px;
  width: 90%;
  text-align: center;
  animation: slideIn 0.3s ease;
}

.overlay-content h2 {
  font-size: 1.8rem;
  color: var(--accent-gold);
  margin-bottom: var(--spacing-lg);
}

.pause-buttons,
.gameover-buttons,
.complete-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.pause-buttons button,
.gameover-buttons button,
.complete-buttons button {
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pause-buttons button:hover,
.gameover-buttons button:hover,
.complete-buttons button:hover {
  border-color: var(--accent-blue);
  background: var(--bg-card);
}

/* Level Complete */
.celebration {
  position: relative;
  overflow: hidden;
}

.stats-display {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.stat-item {
  text-align: center;
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-xs);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.stat-value.stars {
  font-size: 1.8rem;
}

.concept-learned {
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  text-align: left;
}

.concept-learned h4 {
  font-size: 0.9rem;
  color: var(--accent-green);
  margin-bottom: var(--spacing-sm);
}

.concept-learned p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Game Over */
.game-over-content h2 {
  color: var(--accent-red);
}

.fail-message {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.hint-box {
  padding: var(--spacing-md);
  background: rgba(255, 215, 0, 0.1);
  border: 1px solid var(--accent-gold);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  text-align: left;
}

.hint-box h4 {
  font-size: 0.9rem;
  color: var(--accent-gold);
  margin-bottom: var(--spacing-sm);
}

.hint-box p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Settings */
.settings-content {
  max-width: 600px;
}

.settings-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  text-align: left;
}

.settings-group h3 {
  font-size: 1rem;
  color: var(--accent-blue);
  margin-bottom: var(--spacing-md);
  font-family: var(--font-body);
}

.settings-group label {
  display: block;
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.settings-group input[type='range'] {
  width: 100%;
  margin-top: var(--spacing-xs);
}

.settings-group select {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--bg-primary);
  border: 1px solid var(--node-border);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  margin-top: var(--spacing-xs);
}

.settings-group input[type='checkbox'] {
  margin-right: var(--spacing-sm);
}

.settings-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.settings-buttons button {
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.settings-buttons button:first-child {
  background: var(--accent-blue);
  border: none;
  color: var(--bg-primary);
}

.settings-buttons button:last-child {
  background: transparent;
  border: 2px solid var(--node-border);
  color: var(--text-primary);
}

/* Hint Modal */
.hint-content {
  max-width: 600px;
}

.hint-text {
  padding: var(--spacing-lg);
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.hint-text p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.hint-text p:last-child {
  margin-bottom: 0;
}

.hint-code {
  margin-bottom: var(--spacing-lg);
}

.hint-code pre {
  background: var(--bg-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  text-align: left;
  overflow-x: auto;
}

.hint-code code {
  color: var(--accent-green);
  font-size: 0.85rem;
}

.hint-content button {
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-body);
  font-weight: 600;
  background: var(--accent-gold);
  border: none;
  border-radius: var(--border-radius);
  color: var(--bg-primary);
  cursor: pointer;
}

/* ========================================
   Sandbox Mode
   ======================================== */
#sandbox-screen {
  flex-direction: column;
  background: var(--bg-primary);
}

.sandbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--bg-tertiary);
}

.sandbox-header h1 {
  font-size: 1.5rem;
  color: var(--accent-purple);
}

.sandbox-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.sandbox-controls button {
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-body);
  font-weight: 600;
  background: var(--bg-tertiary);
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sandbox-controls button:hover {
  border-color: var(--accent-purple);
}

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

.sandbox-tools {
  width: 200px;
  background: var(--bg-secondary);
  border-right: 2px solid var(--bg-tertiary);
  padding: var(--spacing-md);
  overflow-y: auto;
}

.sandbox-tools h3 {
  font-size: 1rem;
  color: var(--accent-blue);
  margin-bottom: var(--spacing-md);
}

.tool-group {
  margin-bottom: var(--spacing-lg);
}

.tool-group h4 {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
}

.tool-btn {
  width: 100%;
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-align: left;
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.tool-btn.active {
  border-color: var(--accent-blue);
  background: rgba(0, 212, 255, 0.1);
}

.sandbox-canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#sandbox-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.node-value-input {
  position: absolute;
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--bg-card);
  border: 2px solid var(--accent-blue);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-glow);
}

.node-value-input.hidden {
  display: none;
}

.node-value-input input {
  width: 100px;
  padding: var(--spacing-sm);
  font-family: var(--font-code);
  background: var(--bg-primary);
  border: 1px solid var(--node-border);
  border-radius: 4px;
  color: var(--text-primary);
}

.node-value-input button {
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-body);
  font-weight: 600;
  background: var(--accent-blue);
  border: none;
  border-radius: 4px;
  color: var(--bg-primary);
  cursor: pointer;
}

.sandbox-info {
  width: 250px;
  background: var(--bg-secondary);
  border-left: 2px solid var(--bg-tertiary);
  padding: var(--spacing-md);
  overflow-y: auto;
}

.sandbox-info h3 {
  font-size: 1rem;
  color: var(--accent-green);
  margin-bottom: var(--spacing-md);
}

#sandbox-info-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.list-display {
  margin-top: var(--spacing-lg);
}

.list-display h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
}

.list-viz {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--accent-blue);
  word-break: break-all;
}

/* ========================================
   Level Editor
   ======================================== */
#editor-screen {
  flex-direction: column;
  background: var(--bg-primary);
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--bg-tertiary);
}

.editor-header h1 {
  font-size: 1.5rem;
  color: var(--accent-orange);
}

.editor-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.editor-controls button {
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-body);
  font-weight: 600;
  background: var(--bg-tertiary);
  border: 2px solid var(--node-border);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.editor-controls button:hover {
  border-color: var(--accent-orange);
}

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

.editor-settings {
  width: 250px;
  background: var(--bg-secondary);
  border-right: 2px solid var(--bg-tertiary);
  padding: var(--spacing-md);
  overflow-y: auto;
}

.editor-settings h3 {
  font-size: 1rem;
  color: var(--accent-orange);
  margin-bottom: var(--spacing-md);
}

.setting-group {
  margin-bottom: var(--spacing-md);
}

.setting-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-xs);
}

.setting-group input,
.setting-group select,
.setting-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: var(--font-body);
  background: var(--bg-primary);
  border: 1px solid var(--node-border);
  border-radius: var(--border-radius);
  color: var(--text-primary);
}

.setting-group textarea {
  min-height: 80px;
  resize: vertical;
}

.editor-canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#editor-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.editor-nodes {
  width: 250px;
  background: var(--bg-secondary);
  border-left: 2px solid var(--bg-tertiary);
  padding: var(--spacing-md);
  overflow-y: auto;
}

.editor-nodes h3 {
  font-size: 1rem;
  color: var(--accent-green);
  margin-bottom: var(--spacing-md);
}

.editor-nodes button {
  width: 100%;
  padding: var(--spacing-sm);
  margin-top: var(--spacing-md);
  font-family: var(--font-body);
  font-weight: 600;
  background: var(--bg-tertiary);
  border: 2px dashed var(--node-border);
  border-radius: var(--border-radius);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.editor-nodes button:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

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

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

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

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

/* Utility Classes */
.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}