:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --success-color: #2ecc71;
  --background-color: #ecf0f1;
  --text-color: #2c3e50;
  --card-bg: #ffffff;
  --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

/* Tema Padrão */
[data-theme="default"] {
  --background-color: #f5f5f5;
  --card-bg: #ffffff;
  --text-color: #333333;
  --primary-color: #3498db;
  --secondary-color: #95a5a6;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
}

/* Tema Escuro */
[data-theme="dark"] {
  --background-color: #1a1a1a;
  --card-bg: #2d2d2d;
  --text-color: #ffffff;
  --primary-color: #3498db;
  --secondary-color: #4a4a4a;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
}

/* Tema Colorido */
[data-theme="colorful"] {
  --background-color: #f8f9fa;
  --card-bg: #ffffff;
  --text-color: #333333;
  --primary-color: #ff6b6b;
  --secondary-color: #4ecdc4;
  --accent-color: #45b7d1;
  --success-color: #96ceb4;
}

/* Classes de tema para compatibilidade */
.theme-default {
  --background-color: #f5f5f5;
  --card-bg: #ffffff;
  --text-color: #333333;
  --primary-color: #3498db;
  --secondary-color: #95a5a6;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
}

.theme-dark {
  --background-color: #1a1a1a;
  --card-bg: #2d2d2d;
  --text-color: #ffffff;
  --primary-color: #3498db;
  --secondary-color: #4a4a4a;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
}

.theme-colorful {
  --background-color: #f8f9fa;
  --card-bg: #ffffff;
  --text-color: #333333;
  --primary-color: #ff6b6b;
  --secondary-color: #4ecdc4;
  --accent-color: #45b7d1;
  --success-color: #96ceb4;
}

/* Acessibilidade - Alto Contraste */
.high-contrast {
  --background-color: #000000;
  --card-bg: #ffffff;
  --text-color: #000000;
  --primary-color: #0000ff;
  --secondary-color: #ff0000;
  --accent-color: #ffff00;
  --success-color: #00ff00;
}

.high-contrast * {
  border-color: #000000 !important;
}

/* Acessibilidade - Movimento Reduzido */
.reduced-motion * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

.reduced-motion .main-logo {
  animation: none !important;
}

.reduced-motion .modal-logo-img {
  animation: none !important;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
  padding-bottom: 80px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Transições suaves para mudanças de tema */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Garantir que as variáveis CSS sejam aplicadas imediatamente */
[data-theme] {
  transition: none;
}

[data-theme] * {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.app-header {
  background: var(--gradient-primary);
  color: white;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.language-toggle .btn-lang {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
}

.language-toggle .btn-lang:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.app-main {
  padding: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section {
  display: none;
  animation: fadeIn 0.5s ease-in-out;
}

.section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Welcome Card */
.welcome-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
  margin-bottom: 2rem;
}

.welcome-logo {
  margin-bottom: 1.5rem;
}

.main-logo {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin: 0 auto;
  display: block;
  animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.welcome-card h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.game-modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.game-mode-btn {
  background: var(--card-bg);
  border: 2px solid transparent;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  box-shadow: var(--shadow);
}

.game-mode-btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.game-mode-btn.easy {
  border-color: var(--success-color);
}

.game-mode-btn.easy:hover {
  background: var(--success-color);
  color: white;
}

.game-mode-btn.medium {
  border-color: var(--primary-color);
}

.game-mode-btn.medium:hover {
  background: var(--primary-color);
  color: white;
}

.game-mode-btn.hard {
  border-color: var(--accent-color);
}

.game-mode-btn.hard:hover {
  background: var(--accent-color);
  color: white;
}

.game-mode-btn i {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
}

.game-mode-btn span {
  display: block;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.game-mode-btn small {
  opacity: 0.7;
  font-size: 0.9rem;
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.stat-item {
  text-align: center;
  padding: 1rem;
  background: rgba(52, 152, 219, 0.1);
  border-radius: var(--border-radius);
}

.stat-item i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-item span {
  display: block;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.stat-item small {
  opacity: 0.7;
  font-size: 0.8rem;
}

/* Game Section */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  padding: 1rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.game-info {
  display: flex;
  gap: 1rem;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.info-item i {
  color: var(--primary-color);
}

.btn-pause {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 0.75rem;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.2rem;
}

.btn-pause:hover {
  transform: scale(1.1);
}

.game-grid {
  display: grid;
  gap: 0.5rem;
  margin: 1rem 0;
  justify-content: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.game-grid.size-4 { grid-template-columns: repeat(4, 1fr); }
.game-grid.size-6 { grid-template-columns: repeat(6, 1fr); }
.game-grid.size-8 { grid-template-columns: repeat(8, 1fr); }

.card {
  aspect-ratio: 1;
  background: var(--card-bg);
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: var(--transition);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}

.card:hover::before {
  opacity: 0.1;
}

.card.flipped {
  border-color: var(--primary-color);
  transform: rotateY(0deg);
}

.card.matched {
  border-color: var(--success-color);
  background: rgba(46, 204, 113, 0.1);
}

.card.wrong {
  border-color: var(--accent-color);
  background: rgba(231, 76, 60, 0.1);
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.card-content {
  position: relative;
  z-index: 1;
}

.game-controls {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

.btn-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  background: var(--secondary-color);
  color: white;
}

.btn-control:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* Stats Section */
.stats-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-card i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.stat-card h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.difficulty-stats {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.difficulty-breakdown {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.difficulty-item {
  padding: 1rem;
  border-radius: var(--border-radius);
  border-left: 4px solid;
}

.difficulty-item.easy {
  border-color: var(--success-color);
  background: rgba(46, 204, 113, 0.1);
}

.difficulty-item.medium {
  border-color: var(--primary-color);
  background: rgba(52, 152, 219, 0.1);
}

.difficulty-item.hard {
  border-color: var(--accent-color);
  background: rgba(231, 76, 60, 0.1);
}

.difficulty-data {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.difficulty-data span {
  font-size: 0.9rem;
}

/* Achievements Section */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.achievement-item {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.achievement-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-success);
  opacity: 0;
  transition: var(--transition);
}

.achievement-item.unlocked::before {
  opacity: 0.1;
}

.achievement-item.unlocked {
  border: 2px solid var(--success-color);
}

.achievement-item.locked {
  opacity: 0.5;
  filter: grayscale(100%);
}

.achievement-content {
  position: relative;
  z-index: 1;
}

.achievement-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.achievement-title {
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.achievement-description {
  font-size: 0.9rem;
  opacity: 0.7;
}

.achievement-progress {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.progress-bar {
  background: rgba(52, 152, 219, 0.2);
  height: 10px;
  border-radius: 5px;
  margin: 1rem 0;
  overflow: hidden;
}

.progress-fill {
  background: var(--gradient-primary);
  height: 100%;
  border-radius: 5px;
  transition: width 0.5s ease;
  width: 0%;
}

/* Settings Section */
.settings-group {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.settings-group h3 {
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  font-size: 1.3rem;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.setting-item:last-child {
  border-bottom: none;
}

.toggle-switch {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: 50px;
  height: 25px;
  background: #ccc;
  border-radius: 25px;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.toggle-switch:checked {
  background: var(--primary-color);
}

.toggle-switch:focus {
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.3);
}

.toggle-switch::before {
  content: '';
  position: absolute;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  background: white;
  top: 2px;
  left: 2px;
  transition: var(--transition);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch:checked::before {
  transform: translateX(25px);
}

.toggle-switch:hover {
  opacity: 0.8;
}

select {
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  background: var(--card-bg);
  color: var(--text-color);
}

/* FAQ Section */
.faq-container {
  space-y: 1rem;
}

.faq-item {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.5rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-color);
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(52, 152, 219, 0.1);
}

.faq-icon {
  font-size: 1.5rem;
  font-weight: bold;
  transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-color);
  opacity: 0.8;
  line-height: 1.6;
}

.faq-answer[hidden] {
  display: none;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

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

.modal-content {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  max-width: 500px;
  width: 90%;
  text-align: center;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { transform: translateY(-50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.game-results {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0;
}

.result-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
  background: rgba(52, 152, 219, 0.1);
  border-radius: var(--border-radius);
}

.result-item i {
  color: var(--primary-color);
}

.new-achievements {
  margin: 1rem 0;
}

.new-achievement {
  background: var(--gradient-success);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  margin: 0.5rem;
  display: inline-block;
  font-size: 0.9rem;
  animation: bounce 0.5s ease;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.modal-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: var(--secondary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-danger {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem auto;
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--card-bg);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0;
  box-shadow: 0 -2px 15px rgba(0, 0, 0, 0.1);
  z-index: 100;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--text-color);
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
  min-width: 60px;
  opacity: 0.7;
}

.nav-item.active {
  color: var(--primary-color);
  opacity: 1;
  background: rgba(52, 152, 219, 0.1);
}

.nav-item:hover {
  opacity: 1;
  transform: translateY(-2px);
}

.nav-item i {
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.nav-item span {
  font-size: 0.7rem;
  font-weight: 600;
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem;
  background: var(--secondary-color);
  color: white;
  font-size: 0.8rem;
  margin-top: 2rem;
}

/* Accessibility */
.high-contrast {
  --primary-color: #000080;
  --secondary-color: #000000;
  --accent-color: #800000;
  --success-color: #008000;
  --background-color: #ffffff;
  --text-color: #000000;
  --card-bg: #f0f0f0;
}

.reduced-motion * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-header h1 {
    font-size: 1.2rem;
  }
  
  .welcome-card {
    padding: 1.5rem;
  }
  
  .welcome-card h2 {
    font-size: 1.5rem;
  }
  
  .game-modes {
    grid-template-columns: 1fr;
  }
  
  .quick-stats {
    grid-template-columns: 1fr;
  }
  
  .game-info {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .info-item {
    font-size: 0.9rem;
  }
  
  .card {
    font-size: 1.2rem;
  }
  
  .game-grid.size-8 .card {
    font-size: 1rem;
  }
  
  .stats-overview {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .difficulty-data {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .achievements-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    padding: 1.5rem;
  }
  
  .modal-actions {
    flex-direction: column;
  }
  
  .nav-item span {
    font-size: 0.6rem;
  }
}

@media (max-width: 480px) {
  .app-main {
    padding: 0.5rem;
  }
  
  .welcome-card {
    padding: 1rem;
  }
  
  .game-header {
    padding: 0.75rem;
  }
  
  .game-grid {
    gap: 0.25rem;
  }
  
  .card {
    font-size: 1rem;
  }
  
  .game-grid.size-6 .card,
  .game-grid.size-8 .card {
    font-size: 0.8rem;
  }
  
  .settings-group {
    padding: 1rem;
  }
  
  .faq-question {
    padding: 1rem;
    font-size: 1rem;
  }
  
  .faq-answer {
    padding: 0 1rem 1rem;
  }
  
  .main-logo {
    width: 80px;
    height: 80px;
  }
  
  .section-logo {
    width: 32px;
    height: 32px;
  }
  
  .modal-logo-img {
    width: 60px;
    height: 60px;
  }
  
  .footer-logo {
    width: 32px;
    height: 32px;
  }
  
  .section-header {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .settings-group {
    padding: 1rem;
  }
  
  .setting-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .toggle-switch {
    width: 40px;
    height: 20px;
  }
  
  .toggle-switch::before {
    width: 16px;
    height: 16px;
  }
  
  .toggle-switch:checked::before {
    transform: translateX(20px);
  }
}

/* Animation Classes */
.flip-animation {
  animation: flip 0.6s ease-in-out;
}

@keyframes flip {
  0% { transform: rotateY(0deg); }
  50% { transform: rotateY(90deg); }
  100% { transform: rotateY(0deg); }
}

.pulse-animation {
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.slide-up {
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.fade-out {
  animation: fadeOut 0.3s ease-out forwards;
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Logo Styles */
.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  justify-content: center;
}

.section-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.modal-logo {
  text-align: center;
  margin-bottom: 1rem;
}

.modal-logo-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  animation: logoPulse 2s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

footer {
  background: var(--gradient-primary);
  color: white;
  padding: 1rem;
  text-align: center;
  margin-top: 2rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.footer-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-text p {
  margin: 0;
  font-size: 0.9rem;
}

.footer-text a {
  color: white;
  text-decoration: none;
  font-size: 0.8rem;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.footer-text a:hover {
  opacity: 1;
}

/* Print Styles */
@media print {
  .bottom-nav,
  .game-controls,
  .modal {
    display: none !important;
  }
  
  body {
    padding-bottom: 0;
  }
  
  .section {
    display: block !important;
    page-break-after: always;
  }
  
  .section:last-child {
    page-break-after: avoid;
  }
}