:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: #f4f6f9; color: #152033; }
.login-shell { min-height: 100vh; display: grid; grid-template-columns: minmax(250px, .72fr) minmax(420px, 1.28fr); }
.brand-panel { display: flex; flex-direction: column; padding: 42px clamp(28px, 5vw, 70px); background: #0b2447; color: #fff; }
.brand-lockup { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 38px; height: 38px; display: block; object-fit: contain; flex: none; border-radius: 8px; }
.brand-copy { display: grid; gap: 1px; }
.brand-copy strong { font-size: 17px; letter-spacing: -.02em; }
.brand-copy span { color: #bdcbe0; font-size: 10px; }
.signin-panel, .operator-shell { display: grid; place-items: center; padding: 36px; }
.signin-card, .operator-card { width: min(390px, 100%); }
.operator-card { padding: 28px; border: 1px solid #dfe5ed; border-radius: 14px; background: #fff; box-shadow: 0 18px 48px rgba(11,36,71,.08); }
.operator-brand { display:flex; align-items:center; gap:10px; margin-bottom:28px; }
.eyebrow { color: #66758a; font-size: 10px; font-weight: 750; letter-spacing: .11em; text-transform: uppercase; }
h1 { margin: 8px 0 24px; color: #0b2447; font-size: 30px; letter-spacing: -.04em; }
label { display: grid; gap: 7px; margin-top: 12px; color: #35445a; font-size: 12px; font-weight: 600; }
input { width: 100%; border: 1px solid #cbd3df; border-radius: 8px; background: #fff; color: #152033; padding: 10px 12px; font: inherit; outline: 0; }
input:focus { border-color: #245b9e; box-shadow: 0 0 0 3px rgba(36,91,158,.10); }
button { width: 100%; margin-top: 12px; border: 1px solid #245b9e; border-radius: 8px; padding: 10px 12px; background: #245b9e; color: #fff; font: inherit; font-weight: 700; cursor: pointer; }
button:hover { background: #174779; border-color: #174779; }
button:disabled { opacity: .55; cursor: wait; }
.google-login { min-height: 44px; display: flex; align-items: center; justify-content: center; gap: 10px; background: #fff; color: #20314a; border-color: #b9c4d2; box-shadow: 0 1px 2px rgba(11,36,71,.05); }
.google-login:hover { background: #f8fafc; border-color: #91a1b5; }
.google-mark { width: 18px; height: 18px; display: grid; place-items: center; border-radius: 50%; color: #245b9e; font-size: 15px; font-weight: 800; }
#error { min-height: 18px; margin-top: 12px; color: #b4232f; font-size: 11px; }
#identity { display: none; }
#identity.visible { display: block; }
small.access-note { display: block; margin-top: 16px; color: #8490a0; line-height: 1.45; font-size: 10px; }
.operator-back { display:inline-block; margin-top:18px; color:#526176; font-size:11px; text-decoration:none; }
.operator-back:hover { color:#245b9e; }
@media (max-width: 760px) {
  .login-shell { grid-template-columns: 1fr; }
  .brand-panel { min-height: 104px; padding: 28px 24px; justify-content:center; }
  .signin-panel, .operator-shell { padding: 48px 22px; place-items:start center; }
}