:root { color-scheme: light; font-family: Arial, sans-serif; }
* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at top, #edf9fa 0, #f3f6f8 52%, #e9eef2 100%); color: #15344a; }
.login-card { width: min(100%, 440px); padding: 42px 38px; border: 1px solid #dbe6eb; border-radius: 20px; background: #fff; box-shadow: 0 18px 56px #123b551c; }
.logo { display: block; width: min(100%, 350px); height: auto; margin: 0 auto 34px; }
h1 { margin: 0 0 8px; font-size: 25px; letter-spacing: -.02em; }
p { margin: 0 0 30px; color: #62788a; line-height: 1.5; }
label { display: block; margin: 16px 0 7px; font-size: 14px; font-weight: 700; }
input { width: 100%; height: 46px; padding: 0 13px; border: 1px solid #bacbd4; border-radius: 9px; font: inherit; }
input:focus { outline: 3px solid #bdebef; border-color: #008d98; }
button { width: 100%; height: 48px; margin-top: 25px; border: 0; border-radius: 9px; background: #078b98; color: #fff; font: inherit; font-weight: 700; cursor: pointer; }
button:hover { background: #006e79; }
button:disabled { opacity: .6; cursor: wait; }
#error { min-height: 20px; margin-top: 16px; color: #ae2e38; font-size: 14px; }
@media (max-width: 520px) { .login-card { padding: 32px 24px; } }