:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #171b21;
  color: #eef1f5;
  line-height: 1.45;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 50% -20%, #252c36, #171b21 52%); }
.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px 24px 64px; }
.auth-card { width: min(100%, 480px); padding: 38px; border: 1px solid #3a424d; border-radius: 18px; background: #20252c; box-shadow: 0 18px 50px rgba(0,0,0,.32); }
.brand { display: flex; align-items: center; gap: 11px; font-size: 20px; font-weight: 750; margin-bottom: 34px; }
.brand-logo { display: block; width: 48px; height: 48px; object-fit: contain; }
h1 { margin: 0 0 8px; font-size: 30px; letter-spacing: -.02em; }
.lead { margin: 0 0 26px; color: #b9c0ca; }
.hint, .help { color: #959eaa; font-size: 14px; }
.field { margin: 0 0 19px; }
label { display: block; margin-bottom: 7px; font-weight: 650; }
input { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #56606c; border-radius: 8px; background: #15191e; color: #f5f7fa; font: inherit; }
input:focus { outline: 3px solid rgba(111,168,255,.28); border-color: #78aaff; }
button, .primary, .secondary { display: block; width: 100%; min-height: 46px; border-radius: 8px; text-align: center; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; }
button, .primary { border: 1px solid #397ee8; background: #397ee8; color: white; padding: 11px 16px; }
button:hover, .primary:hover { background: #4b8bf0; }
.secondary { margin-top: 12px; padding: 11px 16px; border: 1px solid #56606c; color: #dfe4eb; }
.form-errors, .field-errors { color: #ffb6b6; }
.form-errors { margin: 0 0 18px; padding: 12px; border-left: 3px solid #ef5a5a; background: rgba(239,90,90,.10); }
.field-errors ul, .form-errors ul { margin: 5px 0; padding-left: 20px; }
.site-footer { position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; padding: 11px 16px; border-top: 1px solid rgba(255,255,255,0.08); background: rgba(20,23,28,0.92); backdrop-filter: blur(8px); font-size: 12.5px; color: #8a909a; text-align: center; white-space: nowrap; overflow-x: auto; }
.site-footer a { color: #9cc3ff; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .sep { color: #4a4f57; margin: 0 8px; }
@media (max-width: 520px) { .auth-card { padding: 28px 22px; } }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }