body {
  margin: 0;
  font-family: 'Orbitron', sans-serif;
  background-color: #0d0d0d;
  color: #ffffff;
  display: flex;
  height: 100vh;
  overflow: hidden;
}

nav {
  width: 250px;
  background: #111;
  display: flex;
  flex-direction: column;
  padding: 20px;
  box-shadow: 2px 0 10px #00f2ff33;
}

nav h1 {
  font-size: 1.5em;
  margin-bottom: 1em;
  color: #00f2ff;
}

nav a {
  text-decoration: none;
  color: #ccc;
  margin: 10px 0;
  padding: 10px;
  border-radius: 5px;
  transition: background 0.2s;
}

nav a:hover {
  background: #00f2ff33;
  color: #00f2ff;
}

main {
  flex: 1;
  padding: 40px;
  background: linear-gradient(145deg, #0d0d0d 60%, #1a1a1a);
  overflow-y: auto;
}

.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: #1a1a1a;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 0 15px #00f2ff22;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: scale(1.02);
  box-shadow: 0 0 20px #00f2ff66;
}

.card h2 {
  color: #00f2ff;
  margin-bottom: 10px;
}

.card p {
  color: #ccc;
}

@media (max-width: 768px) {
  nav {
    width: 200px;
  }
  main {
    padding: 20px;
  }
}