body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

header {
  text-align: center;
  padding: 40px;
  background: #111827;
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
}

nav a {
  margin: 0 10px;
  color: #60a5fa;
  text-decoration: none;
}

section {
  padding: 50px;
  max-width: 900px;
  margin: auto;
}

h2 {
  color: #60a5fa;
  margin-bottom: 20px;
}

.card {
  background: #1e293b;
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 10px;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

button {
  padding: 10px 15px;
  border: none;
  background: #60a5fa;
  color: white;
  cursor: pointer;
  border-radius: 5px;
}

footer {
  text-align: center;
  padding: 20px;
  background: #111827;
}