.menu-item {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  margin-bottom: 0.25rem;
  color: #334155;
  text-decoration: none;
  transition: background 0.2s;
}
.menu-item.active, .menu-item:hover {
  background: #EFF6FF;
  color: #165DFF;
  font-weight: 500;
}
.module {
  display: block;
}
.module.hidden {
  display: none;
}
.card {
  background: white;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}