:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  background: #101522;
  color: #f4f7ff;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(circle at 10% 10%, #31477b, transparent 38%), #101522;
}

.card {
  width: min(100%, 580px);
  padding: 42px;
  border: 1px solid #52658f;
  border-radius: 22px;
  background: rgb(19 27 46 / 88%);
  box-shadow: 0 20px 70px rgb(0 0 0 / 35%);
}

.eyebrow { margin: 0; color: #9db7ff; font-size: .75rem; font-weight: 700; letter-spacing: .12em; }
h1 { margin: 10px 0; font-size: clamp(2rem, 6vw, 3.2rem); }
.lead { margin: 0 0 32px; color: #c5cee3; }
label { display: block; margin-bottom: 8px; font-weight: 700; }
.form-row { display: flex; gap: 10px; }
input, button { border-radius: 10px; font: inherit; }
input { min-width: 0; flex: 1; padding: 12px; border: 1px solid #687aa2; background: #0f1628; color: inherit; }
button { border: 0; padding: 12px 16px; background: #8fb1ff; color: #0d1730; font-weight: 800; cursor: pointer; }
button:hover { background: #b4ccff; }
.result { min-height: 24px; margin: 22px 0 0; color: #b8ffc9; font-weight: 700; }
.result.error { color: #ffb4b4; }
.footer { margin: 32px 0 0; color: #9eacca; font-size: .85rem; }
#api-status { color: #b8ffc9; }

@media (max-width: 480px) {
  .card { padding: 28px 22px; }
  .form-row { flex-direction: column; }
}