:root {
  color-scheme: dark;
  --background: #06122b;
  --surface: #0d2149;
  --surface-muted: #0a1a3a;
  --border: #1c3563;
  --text: #e8eef8;
  --muted: #97a7c4;
  --brand: #052561;
  --brand-dark: #041d4d;
  --lime: #9bee00;
  --lime-hover: #8ad400;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  color: var(--text);
  background:
    radial-gradient(1100px 440px at 72% -20%, rgba(155, 238, 0, .08), transparent 62%),
    linear-gradient(135deg, #061d50 0%, #102d61 58%, #173b55 100%);
}
.login-card {
  width: min(100%, 500px);
  padding: 38px 26px 56px;
  border: 1px solid var(--border);
  border-top: 4px solid var(--lime);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .5), 0 18px 52px rgba(0, 0, 0, .18);
}
.login-card.compact { text-align: center; }
.brand { color: #fff; font-size: 2rem; font-weight: 900; letter-spacing: -.03em; text-align: center; }
.brand-mark { color: var(--lime); }
.portal-name { margin: 6px 0 34px; color: var(--muted); font-size: 1rem; text-align: center; }
h1 { margin: 0 0 6px; color: var(--text); font-size: .82rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.intro { color: var(--muted); line-height: 1.5; }
.intro { margin: 0; font-size: .88rem; }
.error { margin: 16px 0 0; padding: 10px 12px; border: 1px solid #7f1d1d; border-radius: 8px; color: #fecaca; background: rgba(127, 29, 29, .28); font-size: .84rem; }
form { display: grid; margin: 0; text-align: left; }
.error + form { margin-top: 20px; }
.field { margin-bottom: 22px; }
label { display: block; margin-bottom: 8px; color: var(--muted); font-size: 1rem; font-weight: 700; }
input {
  width: 100%;
  height: 54px;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  color: var(--text);
  background: var(--surface-muted);
  font: inherit;
}
input:focus { border-color: var(--lime); box-shadow: 0 0 0 2px rgba(155, 238, 0, .14); }
button {
  height: 52px;
  padding: 12px 18px;
  border: 1px solid var(--brand);
  border-radius: 8px;
  color: #fff;
  background: var(--brand);
  font: inherit;
  font-size: 1rem;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}
button:hover { border-color: var(--brand-dark); background: var(--brand-dark); }
.compact button { text-align: center; }
button:focus-visible, .back:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }
.back { display: inline-block; margin-top: 22px; color: var(--lime); font-size: .88rem; }
@media (max-width: 480px) {
  .login-card { padding: 32px 20px 40px; }
  .brand { font-size: 1.65rem; }
  .portal-name { font-size: .9rem; }
}