body {
  font-family: system-ui, -apple-system, sans-serif;
  background: #0f172a;
  color: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}
.card {
  background: #1e293b;
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  text-align: center;
  border: 1px solid #334155;
}
h1 { color: #38bdf8; }
#status {
  margin-top: 1rem;
  color: #4ade80;
  font-weight: bold;
}