body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #0a122b, #050816);
  color: white;
}

/* HEADER */
header {
  text-align: center;
  padding: 60px 20px;
}

header h1 {
  font-size: 40px;
}

header p {
  opacity: 0.7;
}

/* NAV */
nav {
  display: flex;
  justify-content: center;
  gap: 30px;
  background: rgba(255,255,255,0.05);
  padding: 15px;
}

nav a {
  color: white;
  text-decoration: none;
}

nav a:hover {
  color: #3b82f6;
}

/* SECTIONS */
section {
  max-width: 900px;
  margin: auto;
  padding: 40px 20px;
}

h2 {
  color: #3b82f6;
}

/* CARDS */
.cards {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.card {
  flex: 1;
  min-width: 200px;
  background: rgba(255,255,255,0.05);
  padding: 20px;
  border-radius: 12px;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  background: rgba(255,255,255,0.1);
}

/* LINKS */
a {
  color: #3b82f6;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  opacity: 0.6;
}