body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0b0b0f;
  color: #f5f5f5;
}

header {
  text-align: center;
  padding: 2rem;
  background: linear-gradient(90deg, #ff004c, #6a00ff);
}

header h1 {
  margin: 0;
  font-size: 3rem;
}

main {
  padding: 2rem;
  max-width: 900px;
  margin: auto;
}

.card {
  background: #16161d;
  padding: 1.5rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

footer {
  text-align: center;
  padding: 1rem;
  color: #aaa;
}