/* MIXED TENSES TRAINER STYLES */

.level-info {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  border: 1px solid var(--border);
}

.level-info h2 {
  color: var(--text);
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
}

.level-info p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  transition: width 0.3s ease;
}

.quota-display {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.start-screen {
  text-align: center;
  padding: 3rem 1rem;
}

.start-content .emoji {
  margin-bottom: 1rem;
}

.start-content h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.level-selector {
  margin-top: 2rem;
}

.level-selector h3 {
  color: var(--text);
  margin-bottom: 1rem;
}

.level-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.game-screen {
  max-width: 800px;
  margin: 0 auto;
}

.question-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  border: 1px solid var(--border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.question-text {
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 2rem;
  line-height: 1.6;
  text-align: center;
}

.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.option-btn {
  padding: 1rem 1.5rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.option-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}

.option-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.option-btn.correct {
  border-color: var(--success);
  background: rgba(0, 255, 100, 0.1);
  color: var(--success);
}

.option-btn.wrong {
  border-color: var(--error);
  background: rgba(255, 0, 0, 0.1);
  color: var(--error);
}

/* Error finding mode */
.error-options {
  text-align: center;
}

.error-instruction {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.error-words {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.error-word {
  padding: 0.75rem 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 80px;
}

.error-word:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.error-word.correct {
  border-color: var(--success);
  background: rgba(0, 255, 100, 0.1);
  color: var(--success);
}

.error-word.wrong {
  border-color: var(--error);
  background: rgba(255, 0, 0, 0.1);
  color: var(--error);
}

/* Feedback */
.feedback {
  text-align: center;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-top: 1rem;
}

.feedback.correct {
  background: rgba(0, 255, 100, 0.1);
  border: 1px solid var(--success);
}

.feedback.wrong {
  background: rgba(255, 0, 0, 0.1);
  border: 1px solid var(--error);
}

.feedback-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.feedback-text {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Game controls */
.game-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

/* Results screen */
.results-screen {
  text-align: center;
  padding: 2rem 1rem;
}

.results-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  border: 1px solid var(--border);
  max-width: 600px;
  margin: 0 auto;
}

.results-card h2 {
  color: var(--text);
  margin-bottom: 2rem;
  font-size: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

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

.stat-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

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

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

/* Responsive design */
@media (max-width: 768px) {
  .level-buttons {
    grid-template-columns: 1fr;
  }

  .options-grid {
    grid-template-columns: 1fr;
  }

  .error-words {
    flex-direction: column;
    align-items: center;
  }

  .error-word {
    width: 100%;
    max-width: 200px;
  }

  .game-controls {
    flex-direction: column;
    align-items: center;
  }

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

  .results-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Animations */
@keyframes pulse-correct {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

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

.option-btn.correct {
  animation: pulse-correct 0.6s ease;
}

.option-btn.wrong {
  animation: shake-wrong 0.5s ease;
}

.error-word.correct {
  animation: pulse-correct 0.6s ease;
}

.error-word.wrong {
  animation: shake-wrong 0.5s ease;
}

/* Level transition effects */
.level-info {
  animation: fadeIn 0.5s ease;
}

.question-card {
  animation: slideUp 0.5s ease;
}

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

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