* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

body {
  background: linear-gradient(135deg, #1e3a8a, #9333ea, #ec4899);
  color: white;
}

header {
  background: rgba(0,0,0,0.6);
  padding: 15px;
  text-align: center;
}

header h1 {
  font-size: 28px;
}

nav a {
  margin: 0 10px;
  color: #facc15;
  text-decoration: none;
  font-weight: bold;
}

section {
  padding: 50px 20px;
  max-width: 1000px;
  margin: auto;
}

.card {
  background: rgba(255,255,255,0.1);
  padding: 20px;
  margin: 15px 0;
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #facc15;
  color: black;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 10px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  header h1 { font-size: 22px; }
  nav { display: flex; flex-wrap: wrap; justify-content: center; }
  nav a { margin: 5px; }
}