:root {
  color-scheme: light;
  --navy: #11233f;
  --blue: #2f6fe4;
  --muted: #6f7f99;
  --line: #dce5f2;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  color: var(--navy);
  background: radial-gradient(circle at 15% 10%, #e7f0ff 0, transparent 32%), linear-gradient(145deg, #f7faff, #edf3fb);
}
button, input { font: inherit; }
.auth-shell { min-height: 100dvh; display: grid; place-items: center; padding: 24px; }
.auth-card {
  width: min(470px, 100%);
  padding: 38px;
  border: 1px solid rgba(207, 220, 239, .9);
  border-radius: 28px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 24px 70px rgba(27, 53, 94, .16);
}
.brand-mark { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 18px; color: #fff; background: linear-gradient(145deg, #164c9f, #3b83ee); font-size: 28px; font-weight: 900; }
.eyebrow { margin: 22px 0 6px; color: var(--blue); text-transform: uppercase; letter-spacing: .09em; font-size: 12px; font-weight: 800; }
h1 { margin: 0; font-size: clamp(30px, 7vw, 42px); line-height: 1.08; }
.lead { margin: 14px 0 24px; color: var(--muted); line-height: 1.55; }
form { display: grid; gap: 16px; }
label { display: grid; gap: 7px; color: #41516b; font-size: 13px; font-weight: 800; }
input { width: 100%; min-height: 52px; padding: 12px 14px; border: 1px solid #c8d5e8; border-radius: 13px; color: var(--navy); background: #f9fbff; outline: 0; }
input:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(47, 111, 228, .13); }
input.pin { text-align: center; letter-spacing: .35em; font-size: 26px; font-weight: 900; }
.primary { min-height: 52px; border: 0; border-radius: 14px; color: #fff; background: var(--blue); cursor: pointer; font-weight: 850; }
.notice { margin: 0 0 16px; padding: 12px 14px; border-radius: 12px; font-size: 13px; line-height: 1.45; }
.notice.error { color: #8c2933; background: #ffecef; }
.notice.success { color: #146c4b; background: #e9f8f1; }
.security-note { margin: 18px 0 0; color: var(--muted); font-size: 11px; line-height: 1.5; }
@media (max-width: 560px) { .auth-shell { padding: 12px; } .auth-card { padding: 25px 20px; border-radius: 22px; } }