*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #f4f4f5;
  --text: #27272a;
  --muted: #71717a;
  --border: #e4e4e7;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
}

.card {
  max-width: 480px;
  width: 100%;
  padding: 2.5rem 2rem;
  text-align: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

footer {
  padding: 1.25rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

footer p {
  margin: 0;
}

footer a {
  color: var(--muted);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}