:root {
  color-scheme: dark;
  --bg: #0b1220;
  --card: #131c2e;
  --border: #22304a;
  --text: #e8eefc;
  --muted: #9aa9c4;
  --accent: #00c2a8;
}

* {
  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, Helvetica, Arial, sans-serif;
}

main {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
}

.logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: block;
}

h1 {
  font-size: 22px;
  margin: 0 0 8px;
}

p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
  margin: 0 0 20px;
}

.btn {
  display: block;
  padding: 14px 18px;
  margin: 0 0 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  background: var(--accent);
  color: #04231f;
}

.btn.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.hidden {
  display: none;
}

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

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