/* NeuroLearn - Revision System Styles */

.rating-btn {
  padding: 1.5rem;
  border-radius: 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 3px solid transparent;
  cursor: pointer;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.rating-again {
  background: #fef2f2;
  color: #dc2626;
  border-color: #fecaca;
}

.rating-again:hover {
  background: #fee2e2;
  border-color: #dc2626;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(220, 38, 38, 0.3);
}

.rating-hard {
  background: #fff7ed;
  color: #ea580c;
  border-color: #fed7aa;
}

.rating-hard:hover {
  background: #ffedd5;
  border-color: #ea580c;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(234, 88, 12, 0.3);
}

.rating-good {
  background: #f0fdf4;
  color: #16a34a;
  border-color: #bbf7d0;
}

.rating-good:hover {
  background: #dcfce7;
  border-color: #16a34a;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(22, 163, 74, 0.3);
}

.rating-easy {
  background: #eff6ff;
  color: #2563eb;
  border-color: #bfdbfe;
}

.rating-easy:hover {
  background: #dbeafe;
  border-color: #2563eb;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background: #f3f4f6;
  color: #374151;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 2px solid #e5e7eb;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-secondary:hover {
  background: white;
  border-color: #3b82f6;
  color: #3b82f6;
}

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

#review-container > div {
  animation: fadeIn 0.5s ease;
}