:root {
  --primary-color: #2196F3;
  --success-color: #4CAF50;
  --warning-color: #FFC107;
  --error-color: #F44336;
  --purple-color: #9C27B0;
  --background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --surface: rgba(255, 255, 255, 0.1);
  --surface-hover: rgba(255, 255, 255, 0.2);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --border: 1px solid rgba(255, 255, 255, 0.18);
  --border-radius: 16px;
  --backdrop-filter: blur(4px);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--background);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 80px;
}

/* Header */
.app-header {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: 0 0 var(--border-radius) var(--border-radius);
  padding: 1rem;
  margin: 1rem 1rem 0;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(45deg, var(--primary-color), var(--purple-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.user-stats {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

.user-stats span {
  background: var(--surface-hover);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-weight: 500;
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 1rem;
}

.section {
  display: none;
  animation: fadeIn 0.3s 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(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.emoji-display {
  font-size: 3rem;
  margin-bottom: 1rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

.welcome-card h2 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.welcome-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Game Modes */
.game-modes {
  margin-bottom: 2rem;
}

.game-modes h3 {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.mode-btn {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1.5rem 1rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow);
}

.mode-btn:hover, .mode-btn:focus {
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
}

.mode-btn i {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.mode-btn span {
  font-weight: 600;
  font-size: 1rem;
}

.mode-btn small {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Quick Stats */
.quick-stats {
  display: flex;
  justify-content: space-around;
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

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

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

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

.game-info {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

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

.control-btn {
  background: var(--surface-hover);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.control-btn:hover {
  background: var(--error-color);
  transform: scale(1.1);
}

/* Timer */
.timer-container {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  text-align: center;
}

.timer-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.timer-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--success-color), var(--warning-color), var(--error-color));
  width: 100%;
  transition: width 0.1s linear;
}

#timer-text {
  font-weight: 600;
  color: var(--text-primary);
}

/* Sequence Display */
.sequence-container {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 2rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sequence-display {
  text-align: center;
  width: 100%;
}

.game-message {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.emoji-sequence {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin: 1rem 0;
}

.emoji-item {
  font-size: 3rem;
  animation: scaleIn 0.5s ease-out;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.emoji-item:hover {
  transform: scale(1.1);
}

@keyframes scaleIn {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Input Container */
.input-container {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

.input-container h3 {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.emoji-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1rem;
  max-height: 200px;
  overflow-y: auto;
}

.emoji-option {
  background: var(--surface-hover);
  border: none;
  border-radius: 12px;
  padding: 0.8rem;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.emoji-option:hover, .emoji-option:focus {
  background: var(--primary-color);
  transform: scale(1.05);
}

.user-sequence {
  min-height: 80px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
}

.user-emoji {
  font-size: 2rem;
  background: var(--surface-hover);
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.user-emoji:hover {
  transform: scale(1.1);
}

.input-controls {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Action Buttons */
.action-btn {
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
  font-size: 1rem;
}

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

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

.action-btn.danger {
  background: var(--error-color);
  color: white;
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Result Container */
.result-container {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  text-align: center;
}

.result-content {
  max-width: 400px;
  margin: 0 auto;
}

.result-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.result-stats {
  display: flex;
  justify-content: space-around;
  margin: 1.5rem 0;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
}

.result-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.result-stats .label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

/* Stats Section */
.stats-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  font-size: 2rem;
}

.stat-info {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

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

.stat-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Progress Section */
.progress-section {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.progress-section h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.progress-item {
  margin-bottom: 1rem;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--purple-color));
  transition: width 0.3s ease;
}

/* History Section */
.history-section {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.history-section h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.recent-games {
  max-height: 300px;
  overflow-y: auto;
}

.game-entry {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

.game-info-entry {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.game-mode {
  font-weight: 600;
  color: var(--text-primary);
}

.game-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.game-score {
  font-weight: 700;
  color: var(--success-color);
}

.no-history {
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
  padding: 2rem;
}

/* Data Actions */
.data-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Settings Section */
.settings-group {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border: var(--border);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}

.settings-group h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 0.5rem;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.setting-item label {
  color: var(--text-primary);
  font-weight: 500;
}

.setting-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-color);
}

.setting-item input[type="range"] {
  width: 100px;
  accent-color: var(--primary-color);
}

.setting-item select {
  background: var(--surface-hover);
  border: var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 14px;
  min-width: 120px;
}

.setting-item select option {
  background: var(--surface);
  color: var(--text-primary);
  padding: 8px;
}

/* Melhorar legibilidade dos inputs */
.setting-item input[type="text"] {
  background: var(--surface-hover);
  border: var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  color: var(--text-primary);
  font-size: 14px;
  min-width: 200px;
}

.setting-item input[type="text"]::placeholder {
  color: var(--text-secondary);
}

.about-info {
  text-align: center;
}

.about-info p {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.about-info p:first-child {
  color: var(--text-primary);
  font-weight: 600;
}

/* FAQ Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.5rem;
  text-align: left;
  color: var(--text-primary);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease;
}

.faq-question:hover {
  background: var(--surface-hover);
}

.faq-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

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

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-secondary);
  line-height: 1.6;
  animation: fadeInDown 0.3s ease-out;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border-top: var(--border);
  display: flex;
  justify-content: space-around;
  padding: 0.8rem 0;
  z-index: 1000;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem;
  border-radius: 12px;
  transition: all 0.3s ease;
  min-width: 60px;
}

.nav-item:hover, .nav-item.active {
  color: var(--primary-color);
  background: rgba(33, 150, 243, 0.1);
  transform: translateY(-2px);
}

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

.nav-item span {
  font-size: 0.7rem;
  font-weight: 500;
}

/* Footer */
footer {
  background: var(--surface);
  backdrop-filter: var(--backdrop-filter);
  border-top: var(--border);
  padding: 1rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: auto;
}

footer a {
  color: var(--primary-color);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-header {
    margin: 0.5rem;
  }
  
  .app-header h1 {
    font-size: 1.3rem;
  }
  
  .user-stats {
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8rem;
  }
  
  .main-content {
    padding: 0.5rem;
  }
  
  .welcome-card {
    padding: 1.5rem;
  }
  
  .emoji-display {
    font-size: 2.5rem;
  }
  
  .mode-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .mode-btn {
    padding: 1rem 0.5rem;
  }
  
  .stats-overview {
    grid-template-columns: 1fr;
  }
  
  .result-actions {
    flex-direction: column;
  }
  
  .data-actions {
    flex-direction: column;
  }
  
  .emoji-options {
    grid-template-columns: repeat(6, 1fr);
  }
  
  .emoji-item {
    font-size: 2.5rem;
  }
}

@media (max-width: 480px) {
  .app-header h1 {
    font-size: 1.1rem;
  }
  
  .mode-grid {
    grid-template-columns: 1fr;
  }
  
  .quick-stats {
    flex-direction: column;
    gap: 1rem;
  }
  
  .emoji-options {
    grid-template-columns: repeat(5, 1fr);
  }
  
  .nav-item span {
    font-size: 0.65rem;
  }
}

/* Holographic theme (default) */
body.holographic-theme {
  --background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --surface: rgba(255, 255, 255, 0.1);
  --surface-hover: rgba(255, 255, 255, 0.2);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --border: 1px solid rgba(255, 255, 255, 0.18);
}

/* Dark theme adjustments */
body.dark-theme {
  --background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  --surface: rgba(255, 255, 255, 0.08);
  --surface-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.85);
  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  --border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Light theme adjustments */
body.light-theme {
  --background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --surface: rgba(255, 255, 255, 0.9);
  --surface-hover: rgba(255, 255, 255, 1);
  --text-primary: #2c3e50;
  --text-secondary: #5a6c7d;
  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.15);
  --border: 1px solid rgba(0, 0, 0, 0.15);
}

/* Loading animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

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

/* Pulse animation for important elements */
.pulse {
  animation: pulse 2s infinite;
}

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

/* Success/Error states */
.success {
  background: var(--success-color) !important;
  color: white;
}

.error {
  background: var(--error-color) !important;
  color: white;
}

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

/* Focus styles for better accessibility */
button:focus, input:focus, select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Melhorar legibilidade dos elementos de formulário */
input, select, textarea {
  background: var(--surface-hover) !important;
  color: var(--text-primary) !important;
  border: var(--border) !important;
}

/* Estilos específicos para o tema claro */
body.light-theme input,
body.light-theme select,
body.light-theme textarea {
  background: rgba(255, 255, 255, 0.95) !important;
  color: #2c3e50 !important;
  border: 1px solid rgba(0, 0, 0, 0.2) !important;
}

body.light-theme input::placeholder,
body.light-theme textarea::placeholder {
  color: #7f8c8d !important;
}

/* Estilos específicos para o tema escuro */
body.dark-theme input,
body.dark-theme select,
body.dark-theme textarea {
  background: rgba(255, 255, 255, 0.1) !important;
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
}

body.dark-theme input::placeholder,
body.dark-theme textarea::placeholder {
  color: rgba(255, 255, 255, 0.6) !important;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --surface: rgba(255, 255, 255, 0.9);
    --text-primary: #000000;
    --text-secondary: #333333;
  }
}