* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Ubuntu, sans-serif;
}

body {
  background: linear-gradient(135deg, #0f172a, #020617);
  color: #e5e7eb;
  min-height: 100vh;
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  min-height: 100vh;
}

.card {
  background: rgba(15, 23, 42, 0.85);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  text-align: center;
}

.card h1 {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
  color: #f8fafc;
}

.subtitle {
  font-size: 1rem;
  color: #94a3b8;
  margin-bottom: 1.5rem;
}

.message {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #cbd5f5;
}

.footer {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: #94a3b8;
}