/**
 * Progress Dashboard Styles
 *
 * UI for displaying user progress, stats, achievements,
 * and CEFR level progression.
 */

/* Modal overlay */
.progress-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeIn 0.2s ease;
}

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

/* Modal content */
.progress-modal {
  background: white;
  border-radius: 16px;
  max-width: 600px;
  width: calc(100% - 40px);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Header */
.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 28px;
  border-bottom: 1px solid #e0e0e0;
}

.progress-header h2 {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  color: #1565c0;
}

.progress-close-btn {
  background: transparent;
  border: none;
  font-size: 24px;
  color: #999;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.2s ease;
}

.progress-close-btn:hover {
  background: #f0f0f0;
  color: #333;
}

/* Stats grid */
.progress-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 24px 28px;
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.progress-stat-card {
  background: white;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all 0.2s ease;
}

.progress-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.progress-stat-card.highlight {
  background: linear-gradient(135deg, #fff5e6 0%, #ffffff 100%);
  border: 2px solid #ff9800;
}

.progress-stat-value {
  font-size: 32px;
  font-weight: 700;
  color: #1565c0;
  margin-bottom: 8px;
}

.progress-stat-card.highlight .progress-stat-value {
  color: #ff6f00;
}

.progress-stat-label {
  font-size: 12px;
  font-weight: 600;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Level section */
.progress-level {
  padding: 24px 28px;
  background: linear-gradient(135deg, #e3f2fd 0%, #ffffff 100%);
}

.progress-level-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.progress-level-label {
  font-size: 16px;
  color: #333;
}

.progress-level-label strong {
  font-size: 20px;
  color: #1565c0;
  font-weight: 700;
}

.progress-level-xp {
  font-size: 14px;
  font-weight: 600;
  color: #666;
  background: white;
  padding: 4px 12px;
  border-radius: 20px;
}

.progress-level-bar {
  height: 12px;
  background: #e0e0e0;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-level-fill {
  height: 100%;
  background: linear-gradient(90deg, #1565c0 0%, #00D9FF 100%);
  border-radius: 6px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.progress-level-next {
  font-size: 13px;
  color: #666;
}

/* Achievements section */
.progress-achievements {
  padding: 24px 28px;
}

.progress-achievements h3 {
  margin: 0 0 16px 0;
  font-size: 18px;
  font-weight: 700;
  color: #333;
}

.progress-achievement-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.progress-achievement {
  background: #f5f5f5;
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  padding: 16px 12px;
  text-align: center;
  transition: all 0.2s ease;
  cursor: help;
}

.progress-achievement.unlocked {
  background: white;
  border-color: #00D9FF;
  box-shadow: 0 2px 8px rgba(0, 217, 255, 0.2);
}

.progress-achievement.unlocked:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(0, 217, 255, 0.3);
}

.progress-achievement.locked {
  opacity: 0.4;
  filter: grayscale(100%);
}

.progress-achievement-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.progress-achievement-name {
  font-size: 11px;
  font-weight: 600;
  color: #666;
  line-height: 1.3;
}

.progress-achievement.unlocked .progress-achievement-name {
  color: #1565c0;
}

/* Secondary stats */
.progress-stats-secondary {
  padding: 16px 28px;
  text-align: center;
  color: #666;
  font-size: 14px;
  border-top: 1px solid #e0e0e0;
}

.progress-stats-secondary strong {
  color: #1565c0;
  font-weight: 700;
}

/* Actions */
.progress-actions {
  padding: 20px 28px 28px 28px;
  text-align: center;
}

.progress-continue-btn {
  width: 100%;
  max-width: 300px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 700;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .progress-modal {
    max-height: 100vh;
    width: 100%;
    border-radius: 0;
  }

  .progress-header {
    padding: 20px;
  }

  .progress-header h2 {
    font-size: 24px;
  }

  .progress-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 20px;
  }

  .progress-stat-card {
    padding: 16px 12px;
  }

  .progress-stat-value {
    font-size: 28px;
  }

  .progress-level {
    padding: 20px;
  }

  .progress-level-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .progress-achievements {
    padding: 20px;
  }

  .progress-achievement-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .progress-achievement {
    padding: 12px 8px;
  }

  .progress-achievement-icon {
    font-size: 28px;
  }

  .progress-achievement-name {
    font-size: 10px;
  }

  .progress-actions {
    padding: 16px 20px 20px 20px;
  }
}

@media (max-width: 480px) {
  .progress-stats {
    grid-template-columns: 1fr 1fr;
  }

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

/* Scrollbar styling */
.progress-modal::-webkit-scrollbar {
  width: 8px;
}

.progress-modal::-webkit-scrollbar-track {
  background: #f1f1f1;
}

.progress-modal::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 4px;
}

.progress-modal::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .progress-modal-overlay,
  .progress-modal,
  .progress-stat-card,
  .progress-level-fill,
  .progress-achievement {
    animation: none;
    transition: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .progress-modal {
    border: 3px solid #000;
  }

  .progress-achievement.unlocked {
    border-width: 3px;
  }
}