body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f6f0fa;

  color: #222;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
header {
  background: #7c3aed;
  color: #fff;
  padding: 0.35rem 0 0.25rem 0;
  box-shadow: 0 2px 8px rgba(124,58,237,0.08);
}
nav {
  text-align: center;
}
nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 1.2rem;
  font-weight: 500;
  transition: color 0.2s;
}
nav a:hover {
  color: #e9d5ff;
}

main {
  flex: 1;
  max-width: 700px;
  margin: 0.2rem auto 0.5rem auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(124,58,237,0.07);
  padding: 0.4rem 0.7rem;
}
footer {
  background: #4b206b;
  color: #fff;
  text-align: center;
  padding: 0.2rem 0;
  font-size: 1rem;
  letter-spacing: 0.05em;
}