:root { font-family: system-ui, sans-serif; color: #18332e; background: #f3f6f4; color-scheme: light; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; min-height: 100svh; display: grid; place-items: center; padding: 24px; }
.login-card { width: 100%; max-width: 420px; background: white; border: 1px solid #dce5df; border-radius: 18px; padding: 36px; box-shadow: 0 12px 40px rgb(23 62 53 / 6%); }
.brand { display: block; color: #23634e; font-size: 13px; font-weight: 800; letter-spacing: .2em; }
h1 { margin: 12px 0; color: #173e35; font-size: 28px; letter-spacing: -.02em; }
.intro { color: #52665d; font-size: 14px; line-height: 1.6; margin: 0 0 28px; }
form { display: grid; gap: 8px; }
label { font-size: 14px; font-weight: 600; }
input, button { width: 100%; font: inherit; border-radius: 8px; padding: 12px; }
input { border: 1px solid #aabdb1; color: #18332e; background: white; margin-bottom: 12px; }
button { border: 0; margin-top: 4px; background: #23634e; color: white; cursor: pointer; font-weight: 600; }
button:hover { background: #184b3a; }
button:disabled { opacity: .65; cursor: wait; }
:focus-visible { outline: 3px solid #be8a28; outline-offset: 3px; }
#login-message { min-height: 40px; margin: 8px 0 0; color: #783d3d; font-size: 13px; line-height: 1.5; }
@media (max-width: 480px) { body { padding: 16px; } .login-card { padding: 28px 24px; } }