* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  background: #111;
  color: #eee;
}
.screen {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: center;
}
h1 { font-size: 1.6rem; margin: 0; }
p { line-height: 1.4; color: #ccc; }
label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
input {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #444;
  background: #222;
  color: #fff;
  font-size: 1rem;
}
.btn {
  display: inline-block;
  text-align: center;
  padding: 14px 20px;
  border-radius: 10px;
  background: #0a84ff;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  border: none;
  font-size: 1rem;
  cursor: pointer;
}
.btn-secondary { background: #333; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }
.qr { width: 100%; max-width: 320px; align-self: center; background: #fff; padding: 12px; border-radius: 8px; }