/**
 * Quiz System Styles for chemie-lernen.org
 */

/* Quiz Container */
.quiz-container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background: var(--card-bg, #ffffff);
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .quiz-container {
    --card-bg: #1e1e1e;
    color: #e0e0e0;
  }
}

/* Quiz Header */
.quiz-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border-color, #e0e0e0);
}

/* Timer Display */
.quiz-timer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--timer-bg, #fff3cd);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--timer-text, #856404);
  transition: all 0.3s ease;
}

.quiz-timer.warning {
  background: #f8d7da;
  color: #721c24;
  animation: pulse 1s infinite;
}

.quiz-timer.critical {
  background: #dc3545;
  color: white;
  animation: pulse 0.5s infinite;
}

.quiz-timer svg {
  width: 24px;
  height: 24px;
}

/* Hints Section */
.quiz-hint {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--hint-bg, #e3f2fd);
  border-left: 4px solid var(--accent-color, #3498db);
  border-radius: 4px;
  display: none;
}

.quiz-hint.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.quiz-hint-title {
  font-weight: 600;
  color: var(--accent-color, #3498db);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quiz-hint-text {
  font-size: 0.95rem;
  color: var(--text-color, #333);
}

.quiz-hint-button {
  background: var(--accent-color, #3498db);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  margin-top: 0.5rem;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.quiz-hint-button:hover {
  background: var(--accent-dark, #2980b9);
  transform: translateY(-1px);
}

.quiz-hint-button:disabled {
  background: #6c757d;
  cursor: not-allowed;
  transform: none;
}

/* Quiz Settings Panel */
.quiz-settings {
  background: var(--settings-bg, #f8f9fa);
  padding: 1rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
}

.quiz-settings-title {
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-color, #333);
}

.quiz-setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color, #e0e0e0);
}

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

.quiz-setting-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.quiz-setting input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
}

.quiz-setting-description {
  font-size: 0.85rem;
  color: var(--text-secondary, #666);
  margin-top: 0.25rem;
}

/* Settings Toggle Button */
.settings-toggle {
  background: transparent;
  border: 2px solid var(--border-color, #e0e0e0);
  color: var(--text-color, #333);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.settings-toggle:hover {
  border-color: var(--accent-color, #3498db);
  background: var(--option-hover, #f0f8ff);
}

.settings-toggle svg {
  width: 18px;
  height: 18px;
}

.quiz-title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color, #2c3e50);
}

.quiz-subtitle {
  font-size: 1rem;
  color: var(--text-secondary, #666);
}

/* Question Card */
.question-card {
  background: var(--question-bg, #f8f9fa);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--accent-color, #3498db);
}

.question-text {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--question-text, #2c3e50);
}

.question-number {
  display: inline-block;
  background: var(--accent-color, #3498db);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  margin-right: 0.5rem;
}

/* Answer Options */
.answer-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.answer-option {
  padding: 1rem;
  background: var(--option-bg, #ffffff);
  border: 2px solid var(--option-border, #e0e0e0);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.answer-option:hover {
  border-color: var(--accent-color, #3498db);
  background: var(--option-hover, #f0f8ff);
}

.answer-option.selected {
  border-color: var(--accent-color, #3498db);
  background: var(--option-selected, #e3f2fd);
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.answer-option.correct {
  border-color: #28a745;
  background: #d4edda;
}

.answer-option.incorrect {
  border-color: #dc3545;
  background: #f8d7da;
}

/* Radio and Checkbox styling */
.answer-option input[type="radio"],
.answer-option input[type="checkbox"] {
  margin-right: 0.75rem;
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
}

.answer-option label {
  cursor: pointer;
  flex: 1;
  font-size: 1rem;
}

/* Feedback Section */
.feedback {
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: 8px;
  display: none;
}

.feedback.show {
  display: block;
}

.feedback.correct {
  background: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

.feedback.incorrect {
  background: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.feedback-title {
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feedback-icon {
  font-size: 1.25rem;
}

/* Progress Bar */
.progress-container {
  margin-bottom: 2rem;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--progress-bg, #e0e0e0);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-color, #3498db), var(--accent-dark, #2980b9));
  transition: width 0.3s ease;
  border-radius: 4px;
}

.progress-text {
  text-align: center;
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary, #666);
}

/* Buttons */
.quiz-button {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin: 0.25rem;
}

.quiz-button-primary {
  background: var(--accent-color, #3498db);
  color: white;
}

.quiz-button-primary:hover {
  background: var(--accent-dark, #2980b9);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.quiz-button-secondary {
  background: var(--secondary-bg, #6c757d);
  color: white;
}

.quiz-button-secondary:hover {
  background: #5a6268;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.quiz-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

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

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

.results-score {
  font-size: 4rem;
  font-weight: bold;
  color: var(--accent-color, #3498db);
  margin: 1rem 0;
}

.results-score.passed {
  color: #28a745;
}

.results-score.failed {
  color: #dc3545;
}

.results-message {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

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

.detail-card {
  padding: 1rem;
  background: var(--detail-bg, #f8f9fa);
  border-radius: 8px;
  text-align: center;
}

.detail-value {
  font-size: 2rem;
  font-weight: bold;
  color: var(--accent-color, #3498db);
}

.detail-label {
  font-size: 0.875rem;
  color: var(--text-secondary, #666);
  margin-top: 0.5rem;
}

/* Hints Counter */
.hints-counter {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  background: var(--badge-bg, #f8f9fa);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary, #666);
  margin-left: 0.5rem;
}

/* Answer Review */
.answer-review {
  margin-top: 2rem;
  text-align: left;
}

.review-item {
  padding: 1rem;
  background: var(--review-bg, #f8f9fa);
  border-radius: 8px;
  margin-bottom: 1rem;
  border-left: 4px solid var(--border-color, #e0e0e0);
}

.review-item.correct {
  border-left-color: #28a745;
}

.review-item.incorrect {
  border-left-color: #dc3545;
}

.review-question {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.review-answer {
  margin: 0.5rem 0;
  font-size: 0.9rem;
}

.review-answer.user {
  color: var(--text-secondary, #666);
}

.review-answer.correct {
  color: #28a745;
  font-weight: 500;
}

.review-explanation {
  margin-top: 0.5rem;
  padding: 0.75rem;
  background: rgba(52, 152, 219, 0.1);
  border-radius: 4px;
  font-size: 0.9rem;
}

/* Quiz Progress Badge */
.progress-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--badge-bg, #f8f9fa);
  border-radius: 20px;
  font-size: 0.875rem;
  margin: 0.25rem;
}

.progress-badge.completed {
  background: #d4edda;
  color: #155724;
}

.progress-badge.in-progress {
  background: #fff3cd;
  color: #856404;
}

/* Responsive Design */
@media (max-width: 768px) {
  .quiz-container {
    padding: 1rem;
    margin: 1rem;
  }

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

  .question-text {
    font-size: 1rem;
  }

  .results-details {
    grid-template-columns: 1fr;
  }

  .button-group {
    flex-direction: column;
  }

  .quiz-button {
    width: 100%;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.question-card {
  animation: fadeIn 0.3s ease;
}

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

.quiz-button:hover:not(:disabled) {
  animation: pulse 0.3s ease;
}

/* Accessibility */
.quiz-button:focus,
.answer-option:focus-within {
  outline: 2px solid var(--accent-color, #3498db);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .quiz-button,
  .progress-container {
    display: none;
  }

  .quiz-container {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}