:root {
  --bg: #f5f3f7;
  --card: #ffffff;
  --text: #1c1b1f;
  --muted: #5f5a66;
  --primary: #8e24aa;
  --on-primary: #ffffff;
  --border: #e2ddea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141218;
    --card: #1f1b24;
    --text: #ece6f0;
    --muted: #b0a8ba;
    --primary: #d0bcff;
    --on-primary: #381e72;
    --border: #332e3a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.5;
}

.card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 24px;
  text-align: center;
}

h1 {
  margin: 0 0 12px;
  font-size: 26px;
}

.lead {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 15px;
}

.btn {
  display: inline-block;
  width: 100%;
  padding: 14px 18px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn.disabled {
  opacity: 0.5;
  cursor: default;
}

.ios {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.ios h2 {
  margin: 0 0 8px;
  font-size: 18px;
}

.ios p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--muted);
}

footer {
  margin-top: 24px;
  font-size: 12px;
  color: var(--muted);
}