* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background: #0a0a14; color: #f4f4f9; min-height: 100vh; }
.centered { display: flex; align-items: center; justify-content: center; padding: 24px; }
.card { background: #14142b; border-radius: 16px; padding: 28px; max-width: 480px; width: 100%; box-shadow: 0 12px 40px rgba(0,0,0,.4); }
.card h1 { margin: 0 0 12px; }
a { color: #ff7adb; }
code { background: #1f1f3a; padding: 2px 6px; border-radius: 6px; }
button {
  appearance: none; border: 0; cursor: pointer;
  background: linear-gradient(135deg, #ff5fa2, #ff7adb);
  color: white; font-weight: 700; font-size: 16px;
  padding: 14px 22px; border-radius: 12px; width: 100%;
}
button:disabled { opacity: .6; cursor: not-allowed; }
input[type="text"], input[type="password"] {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  border: 1px solid #2a2a4a; background: #0e0e22; color: #f4f4f9; font-size: 16px;
}
.row { display: flex; gap: 12px; }
.row > * { flex: 1; }
.muted { color: #8e8eb0; font-size: 14px; }