:root {
  --navy: #0b1b33;
  --night: #07111f;
  --blue: #1f5fd6;
  --ice: #8fb8ff;
  --page: #f5f7fb;
  --ink: #0b1b33;
  --muted: #5a6b85;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hero {
  background: linear-gradient(180deg, var(--night), var(--navy));
  color: #ffffff;
  padding: 48px 16px 88px;
  text-align: center;
}

.hero img {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(79, 139, 255, 0.35);
}

.hero h1 {
  margin: 20px 0 8px;
  font-size: 30px;
  letter-spacing: -0.5px;
}

.hero p {
  margin: 0 auto;
  max-width: 420px;
  color: #b6c1d3;
  font-size: 16px;
  line-height: 24px;
}

.card {
  width: calc(100% - 32px);
  max-width: 440px;
  margin: -56px auto 0;
  padding: 28px 24px;
  background: var(--card);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(11, 27, 51, 0.12);
  text-align: center;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 22px;
}

.code {
  margin: 20px 0;
  padding: 14px;
  background: var(--page);
  border-radius: 12px;
  font-family: Menlo, Consolas, 'Courier New', monospace;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--blue);
}

.button {
  display: block;
  margin-top: 12px;
  padding: 15px 20px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
}

.button.primary {
  background: var(--blue);
  color: #ffffff;
}

.button.secondary {
  background: var(--page);
  color: var(--ink);
}

.button.disabled {
  background: var(--page);
  color: var(--muted);
  cursor: default;
}

.hint {
  margin-top: 16px !important;
  font-size: 13px !important;
}

footer {
  padding: 32px 16px 40px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

footer a {
  color: var(--muted);
}

[hidden] {
  display: none !important;
}