body {
  font-family: system-ui, sans-serif;
  background: #f9fafb;
  margin: 0;
}

.nav-link {
  color: #bbb;
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link.active,
.nav-link:hover {
  color: white;
  font-weight: bold;
}

button {
  cursor: pointer;
}