body > header {
  background: linear-gradient(90deg, #191932, #0c0c14);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

body > header h1 {
  color: #a78bfa;
  font-size: 1.5rem;
  margin: 0;
}

body > header nav a {
  color: #a5b4fc;
  text-decoration: none;
  margin: 0 0.8rem;
  font-weight: 500;
  transition: color 0.2s;
}

body > header nav a:hover {
  color: #c4b5fd;
}

body > header nav a.active {
  color: #818cf8;
  text-decoration: underline;
}