body {
  margin: 0;
  font: 16px system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

.wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  max-width: 520px;
  width: 100%;
  border: 1px solid #ddd;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

h1 {
  margin: 0 0 12px;
  font-size: 20px;
}

.description {
  margin: 0 0 20px;
  color: #444;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border: 1px solid #ccc;
  border-radius: 12px;
  text-decoration: none;
  font-size: 18px;
  background: #fff;
  cursor: pointer;
}

.btn.secondary {
  border-color: #ddd;
  font-size: 16px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.status {
  margin-top: 16px;
  color: #555;
  min-height: 20px;
}

.qr-block {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.qr-code canvas,
.qr-code img {
  width: 180px;
  height: 180px;
}

.qr-caption {
  margin: 0;
  color: #555;
  font-size: 14px;
}

.hidden {
  display: none;
}