body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #07071a;
  color: #00f0ff;
}
h1, h2, h3, h4 {
  color: #00f0ff;
  font-weight: bold;
  text-shadow: 0 0 4px #00f0ff, 0 0 8px #00f0ff;
}
nav {
  display: flex;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: #0a0a1f;
  border-bottom: 2px solid #ff00c8;
  box-shadow: 0 0 10px #ff00c8;
}
nav a {
  color: #ff00c8;
  text-decoration: none;
  margin: 0 1rem;
  font-weight: bold;
  font-size: 1rem;
  text-shadow: 0 0 5px #ff00c8;
}
nav a:hover {
  color: #00f0ff;
  text-shadow: 0 0 10px #00f0ff, 0 0 20px #00f0ff;
}
main {
  padding: 2rem;
}
.card {
  background: #0e0e1f;
  border: 2px solid #00f0ff;
  border-radius: 1rem;
  padding: 2rem;
  margin: 1rem;
  box-shadow: 0 0 12px #00f0ff;
  color: #ffffff;
  text-align: center;
  transition: transform 0.2s;
}
.card:hover {
  transform: scale(1.03);
  box-shadow: 0 0 16px #ff00c8;
}