:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #172033; background: #f4f6fa; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 400px; padding: 36px; border: 1px solid #e0e5ee; border-radius: 16px; background: white; box-shadow: 0 12px 48px #17203308; }
.brand { font-size: 16px; font-weight: 750; color: #315cf5; margin-bottom: 28px; }
h1 { font-size: 24px; margin: 0 0 10px; }
.description, .hint { font-size: 14px; color: #647084; line-height: 1.6; }
.description { margin: 0 0 24px; }
label { display: block; margin: 16px 0 8px; font-size: 14px; font-weight: 600; }
input { width: 100%; border: 1px solid #c9d1de; border-radius: 8px; padding: 11px 12px; font: inherit; }
input:focus { outline: 2px solid #315cf5; outline-offset: 2px; }
button { width: 100%; border: 0; border-radius: 8px; padding: 12px; font: inherit; font-weight: 600; color: white; background: #315cf5; cursor: pointer; }
button:disabled { opacity: .6; cursor: wait; }
#error { min-height: 20px; color: #b42318; font-size: 14px; margin: 12px 0; }
.hint { margin: 24px 0 0; font-size: 12px; }
@media (max-width: 420px) { .login-card { padding: 24px; } }