.btn-primary {
  background: linear-gradient(90deg, #3b82f6 0%, #2563eb 100%);
  border: none;
  border-radius: 8px;
  font-size: 1.2rem;
  padding: 0.75rem 0;
  transition: background-color 0.2s;
}

.btn-primary:hover {
  background: linear-gradient(90deg, #2563eb 0%, #1d4ed8 100%);
}

.form-control:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.15);
}

@media (max-width: 768px) {
  .main-content {
    padding: 1.2rem 0.5rem;
  }
}