:root {
  font: 15px/1.5 system-ui, -apple-system, sans-serif;
  color: #172237;
  color-scheme: light;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: linear-gradient(135deg, #acbee6, #e7eef2 82%);
}
.login-card {
  width: min(100%, 400px);
  padding: 38px;
  border-radius: 28px;
  background: #f8fbff87;
  box-shadow: 0 24px 65px #304d7520;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.brand-mark { display: block; font-size: 32px; line-height: 1; }
h1 { margin: 10px 0 0; font-size: 30px; letter-spacing: -1px; font-weight: 600; }
h1 span { color: #365bcc; }
.brand-label { margin: 2px 0 28px; color: #495d78; }
form { display: grid; gap: 8px; }
label { font-weight: 550; }
input, button { font: inherit; width: 100%; min-width: 0; }
input {
  background: #f9fbffe0;
  color: inherit;
  border: 1px solid #8394b0;
  border-radius: 12px;
  padding: 11px 13px;
  margin-bottom: 8px;
  font-size: 16px;
}
button {
  margin-top: 6px;
  padding: 11px 16px;
  min-height: 44px;
  border: 0;
  border-radius: 24px;
  color: white;
  background: #172237;
  font-weight: 550;
  cursor: pointer;
}
button:hover { background: #2b3f61; }
:focus-visible { outline: 3px solid #3156cb; outline-offset: 3px; }
.login-message { margin: 0 0 8px; color: #853548; font-size: 13px; }
@media (max-width: 420px) { .login-card { padding: 26px; } }
@media (prefers-reduced-transparency: reduce), (prefers-contrast: more) {
  .login-card { background: #f4f7fd; backdrop-filter: none; }
}