:root {
  --primary: #3f51b5;
  --primary-hover: #303f9f;
}

.required {
  color: #f44336;
}

body {
  background-color: #f8f9fa;
}

.navbar-brand {
  font-weight: bold;
  color: var(--primary) !important;
}

.btn-primary {
  background-color: var(--primary);
  border-color: var(--primary);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.btn-outline-secondary {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline-secondary:hover {
  background-color: var(--primary);
  border-color: var(--primary);
}

.card {
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  border: 1px solid rgba(0, 0, 0, 0.125);
}

.form-label {
  font-weight: 500;
}

#output {
  margin-top: 2rem;
}

pre {
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 0.375rem;
  padding: 1rem;
  white-space: pre-wrap;
  word-wrap: break-word;
}