/**
 * PrefixPlay Styles
 * Theme support: dark, light, and auto (system)
 */

/* ===== CSS Variables - Dark Theme (default) ===== */
:root {
  /* Dark slate palette */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-hover: #475569;

  /* Text colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent colors */
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-blue-dark: #2563eb;
  --accent-green: #22c55e;
  --accent-green-light: #4ade80;
  --accent-yellow: #eab308;
  --accent-red: #ef4444;
  --accent-purple: #a855f7;

  /* Semantic colors */
  --success: var(--accent-green);
  --error: var(--accent-red);
  --warning: var(--accent-yellow);
  --info: var(--accent-blue);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* Layout */
  --header-height: 80px;
  --footer-height: 60px;

  /* Map colors */
  --map-ocean: #0c1929;
  --map-land: #4a5568;
  --map-land-stroke: #718096;
}

/* ===== Light Theme ===== */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #e2e8f0;
  --bg-tertiary: #cbd5e1;
  --bg-hover: #94a3b8;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-blue: #2563eb;
  --accent-blue-light: #3b82f6;
  --accent-blue-dark: #1d4ed8;
  --accent-green: #16a34a;
  --accent-green-light: #22c55e;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  --map-ocean: #60a5fa;
  --map-land: #fef3c7;
  --map-land-stroke: #d97706;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

a {
  color: var(--accent-blue-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-blue);
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ===== Header ===== */
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--bg-tertiary);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.header-left,
.header-right {
  flex: 0 0 200px;
}

.header-left {
  display: flex;
  justify-content: flex-start;
}

.header-right {
  display: flex;
  justify-content: flex-end;
}

.header-center {
  flex: 1;
  text-align: center;
}

.parent-logo-link {
  display: block;
  background: #0f172a;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
}

.parent-logo {
  height: 150px;
  width: auto;
  object-fit: contain;
  display: block;
}

.header-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.header-icon {
  font-size: 1.5rem;
}

.header-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===== Main Grid Layout ===== */
.main-grid {
  display: grid;
  grid-template-columns: 300px 1fr 300px;
  gap: 1px;
  background: var(--bg-tertiary);
  flex: 1;
  min-height: 0;
}

.panel {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  overflow-y: auto;
}

.panel-left {
  border-right: 1px solid var(--bg-tertiary);
}

.panel-right {
  border-left: 1px solid var(--bg-tertiary);
}

.panel-center {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

/* ===== Menu Panel ===== */
.menu-panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.menu-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.menu-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

/* Language Selector */
.language-selector {
  display: flex;
  gap: var(--spacing-sm);
}

.lang-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--transition-normal);
}

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

.lang-btn.active {
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.15);
}

.lang-flag {
  font-size: 1.2rem;
}

.lang-name {
  font-size: 0.85rem;
}

/* Theme Selector */
.theme-selector {
  display: flex;
  gap: var(--spacing-sm);
}

.theme-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--transition-normal);
}

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

.theme-btn.active {
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.15);
}

.theme-icon {
  font-size: 1.1rem;
}

.theme-name {
  font-size: 0.85rem;
}

/* Mode Selector */
.mode-selector {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-align: left;
  transition: all var(--transition-normal);
}

.mode-btn:hover {
  background: var(--bg-hover);
  border-color: var(--bg-hover);
}

.mode-btn.active {
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.15);
}

.mode-icon {
  font-size: 1.5rem;
}

.mode-name {
  font-size: 0.95rem;
  font-weight: 500;
}

/* Practice Button */
.practice-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  width: 100%;
  text-align: left;
  transition: all var(--transition-normal);
}

.practice-btn:hover:not(:disabled) {
  background: var(--bg-hover);
}

.practice-btn.active {
  border-color: var(--accent-yellow);
  background: rgba(234, 179, 8, 0.15);
}

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

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

.practice-text {
  font-size: 0.9rem;
}

/* Menu Actions */
.menu-actions {
  margin-top: auto;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--bg-tertiary);
}

.menu-action-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: left;
  transition: all var(--transition-fast);
}

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

.menu-action-btn.danger:hover {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
}

/* ===== Game Card ===== */
.game-card {
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow-lg);
}

.game-card.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  color: var(--text-muted);
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--bg-hover);
}

.card-header .mode-icon {
  font-size: 1.3rem;
}

.card-header .mode-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.practice-badge {
  margin-left: auto;
  padding: 0.25rem 0.75rem;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-dark) 100%);
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.game-card.practice-active {
  border-color: var(--accent-blue);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}

/* Round Indicator */
.round-indicator {
  margin-left: auto;
  padding: 0.25rem 0.75rem;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 12px;
}

/* Round Complete Screen */
.game-card.round-complete {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.round-complete-content {
  text-align: center;
  padding: var(--spacing-xl);
}

.round-complete-emoji {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
}

.round-complete-content h2 {
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.round-complete-mode {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: var(--spacing-lg);
}

.round-complete-score {
  margin-bottom: var(--spacing-md);
}

.score-big {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-green);
}

.score-percent {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-left: var(--spacing-sm);
}

.round-complete-message {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xl);
}

.new-round-btn {
  padding: var(--spacing-md) var(--spacing-xl);
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-dark) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.new-round-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

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

.card-prompt {
  margin-bottom: var(--spacing-xl);
}

.card-prompt h2 {
  font-size: 1.4rem;
  color: var(--text-primary);
  text-align: center;
  line-height: 1.4;
}

.card-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Option Buttons */
.option-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-secondary);
  border: 2px solid var(--bg-hover);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  text-align: left;
  transition: all var(--transition-normal);
}

.option-btn:hover:not(:disabled) {
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.1);
  transform: translateX(4px);
}

.option-btn:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.option-btn:disabled {
  cursor: default;
  transform: none;
}

.option-btn .flag {
  font-size: 1.5rem;
}

.option-btn .option-text {
  flex: 1;
}

.option-btn .color-indicator {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid #ffffff;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

.option-btn.correct {
  border-color: var(--accent-green);
  background: rgba(34, 197, 94, 0.2);
}

.option-btn.correct::after {
  content: '\2713';
  font-size: 1.2rem;
  color: var(--accent-green);
  font-weight: bold;
}

.option-btn.incorrect {
  border-color: var(--accent-red);
  background: rgba(239, 68, 68, 0.2);
}

.option-btn.incorrect::after {
  content: '\2717';
  font-size: 1.2rem;
  color: var(--accent-red);
  font-weight: bold;
}

/* Card Feedback */
.card-feedback {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--bg-hover);
  text-align: center;
}

.card-feedback.hidden {
  display: none;
}

.feedback-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.feedback-icon {
  font-size: 2.5rem;
  font-weight: bold;
}

.card-feedback.success .feedback-icon {
  color: var(--accent-green);
}

.card-feedback.error .feedback-icon {
  color: var(--accent-red);
}

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

.feedback-text strong {
  color: var(--text-primary);
}

.next-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--accent-blue);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-normal);
}

.next-btn:hover {
  background: var(--accent-blue-light);
  transform: translateY(-2px);
}

.next-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.4);
}

/* ===== Map Display ===== */
.card-map {
  margin-bottom: var(--spacing-md);
  min-height: 200px;
  background: #1e3a5f;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.card-map canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.map-container {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-container canvas {
  display: block;
  width: 100%;
  height: auto;
}

.world-map-canvas {
  image-rendering: crisp-edges;
}

/* ===== Stats Panel ===== */
.stats-panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.stats-title {
  font-size: 1.1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.stat-item {
  background: var(--bg-tertiary);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
}

.stat-item.highlight {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid var(--accent-blue);
}

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

.stat-value.streak {
  color: var(--accent-yellow);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: var(--spacing-xs);
}

.retry-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.help-link {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--bg-tertiary);
  text-align: center;
}

.help-link-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--accent-blue-light);
  text-decoration: none;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: background-color 0.2s, color 0.2s;
}

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

.help-icon {
  font-size: 1.1rem;
}

/* Practice Mode Stats */
.stats-panel.practice-mode {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(30, 41, 59, 0.8) 100%);
  border: 1px solid var(--accent-blue);
}

.stats-panel.practice-mode .stats-title {
  color: var(--accent-blue-light);
}

.practice-progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg) 0;
}

.practice-progress-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.practice-count {
  font-size: 2rem;
  font-weight: bold;
  color: white;
}

.practice-progress-label {
  margin-top: var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.practice-tip {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(251, 191, 36, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: var(--spacing-md);
}

.streak-indicator {
  text-align: center;
  font-size: 1.5rem;
  padding: var(--spacing-sm);
  animation: pulse 1.5s ease-in-out infinite;
}

/* Stat animations */
.stat-value.pulse-correct {
  animation: pulseGreen 0.5s ease;
}

.stat-value.pulse-incorrect {
  animation: pulseRed 0.5s ease;
}

@keyframes pulseGreen {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); color: var(--accent-green); }
}

@keyframes pulseRed {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); color: var(--accent-red); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--bg-tertiary);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-separator {
  color: var(--text-muted);
}

.parent-site-branding {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.parent-site-branding a {
  color: var(--accent-blue-light);
  text-decoration: none;
}

.parent-site-branding a:hover {
  text-decoration: underline;
}

.imprint-note {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: var(--spacing-md);
  font-style: italic;
}

/* ===== Modals ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  z-index: 1000;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.modal-overlay.visible {
  opacity: 1;
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition-slow);
}

.modal-overlay.visible .modal-content {
  transform: translateY(0);
}

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

.modal-header h2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-body p {
  margin-bottom: var(--spacing-md);
}

.modal-body ul {
  list-style: none;
  margin-bottom: var(--spacing-md);
}

.modal-body li {
  padding: var(--spacing-sm) 0;
  color: var(--text-secondary);
}

.modal-body .legal-info {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--spacing-lg);
}

.modal-body a {
  color: var(--accent-blue-light);
}

.modal-body a:hover {
  text-decoration: underline;
}

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--bg-tertiary);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

.modal-danger .modal-header {
  border-bottom-color: var(--accent-red);
}

.warning-text {
  color: var(--accent-yellow);
}

/* Buttons */
.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-normal);
}

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

.btn-primary:hover {
  background: var(--accent-blue-light);
}

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

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

.btn-danger {
  background: var(--accent-red);
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
}

/* ===== Achievements Panel ===== */
.achievements-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  z-index: 1000;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.achievements-overlay.visible {
  opacity: 1;
}

.achievements-modal {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 85vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.achievements-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--bg-tertiary);
  position: relative;
}

.achievements-header h2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.achievements-progress {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: var(--spacing-xs);
}

.achievements-header .close-btn {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
  line-height: 1;
  transition: color var(--transition-fast);
}

.achievements-header .close-btn:hover {
  color: var(--text-primary);
}

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

.achievement-category {
  margin-bottom: var(--spacing-xl);
}

.category-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--bg-tertiary);
}

.category-count {
  color: var(--text-muted);
  font-weight: normal;
  font-size: 0.9rem;
}

.achievement-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.achievement-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: all var(--transition-normal);
}

.achievement-badge.unlocked {
  border-color: var(--accent-yellow);
  background: rgba(234, 179, 8, 0.1);
}

.achievement-badge.locked {
  opacity: 0.5;
}

.badge-icon {
  font-size: 2rem;
  min-width: 50px;
  text-align: center;
}

.achievement-badge.locked .badge-icon {
  filter: grayscale(1);
}

.badge-info {
  flex: 1;
}

.badge-name {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

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

.badge-status {
  font-size: 1.2rem;
  color: var(--accent-green);
}

.achievement-badge.locked .badge-status {
  color: var(--text-muted);
}

/* ===== Toast Notifications ===== */
.toast {
  position: fixed;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all var(--transition-slow);
  z-index: 1100;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast-success {
  border: 2px solid var(--accent-green);
}

.toast-success .toast-icon {
  color: var(--accent-green);
}

.toast-error {
  border: 2px solid var(--accent-red);
}

.toast-error .toast-icon {
  color: var(--accent-red);
}

.toast-achievement {
  border: 2px solid var(--accent-yellow);
  background: linear-gradient(135deg, var(--bg-tertiary), rgba(234, 179, 8, 0.2));
}

.toast-achievement .toast-icon {
  font-size: 2rem;
}

.toast-content {
  display: flex;
  flex-direction: column;
}

.toast-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent-yellow);
  letter-spacing: 0.05em;
}

.toast-message {
  color: var(--text-primary);
  font-weight: 500;
}

/* ===== Spinner ===== */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--bg-hover);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

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

/* ===== Responsive Design ===== */
@media (max-width: 1200px) {
  .main-grid {
    grid-template-columns: 260px 1fr 260px;
  }
}

@media (max-width: 1000px) {
  .main-grid {
    grid-template-columns: 1fr;
  }

  .panel-left,
  .panel-right {
    border: none;
    border-bottom: 1px solid var(--bg-tertiary);
  }

  .panel-left {
    order: 1;
  }

  .panel-center {
    order: 2;
    min-height: 400px;
  }

  .panel-right {
    order: 3;
  }

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }

  .header-content {
    flex-wrap: wrap;
    justify-content: center;
  }

  .header-left,
  .header-right {
    flex: 0 0 auto;
  }

  .header-center {
    flex: 0 0 100%;
    order: 2;
  }

  .parent-logo {
    height: 80px;
  }

  .header-title {
    font-size: 1.5rem;
  }

  .card-prompt h2 {
    font-size: 1.2rem;
  }

  .option-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
  }

  .option-btn .flag {
    font-size: 1.2rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-value {
    font-size: 1.3rem;
  }

  .footer-links {
    flex-wrap: wrap;
  }

  .achievements-modal {
    max-height: 95vh;
  }

  .badge-icon {
    font-size: 1.5rem;
    min-width: 40px;
  }
}

/* ===== Touch Devices ===== */
@media (pointer: coarse) {
  .option-btn {
    min-height: 54px;
  }

  .lang-btn,
  .theme-btn,
  .mode-btn,
  .practice-btn {
    min-height: 48px;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== Lookup Tables ===== */
.lookup-tables {
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.lookup-section {
  margin-bottom: var(--spacing-lg);
}

.lookup-section h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
}

.lookup-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
}

.lookup-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.lookup-result {
  margin-top: var(--spacing-sm);
  min-height: 40px;
}

.result-found {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-xs);
}

.result-flag {
  font-size: 1.5rem;
}

.result-prefix {
  font-weight: bold;
  color: var(--accent-color);
  font-family: monospace;
}

.result-name {
  color: var(--text-primary);
}

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

.result-not-found {
  color: var(--text-secondary);
  font-style: italic;
  padding: var(--spacing-sm);
}

.lookup-examples h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-sm);
  max-height: 300px;
  overflow-y: auto;
  padding-right: var(--spacing-sm);
}

.example-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.example-flag {
  font-size: 1.2rem;
}

.example-prefix {
  font-weight: bold;
  color: var(--accent-color);
  font-family: monospace;
  min-width: 30px;
}

.example-country {
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== Print ===== */
@media print {
  .header,
  .footer,
  .panel-left,
  .panel-right {
    display: none;
  }

  .main-grid {
    display: block;
  }
}