:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, sans-serif; color: #0f172a; background: #f1f5f9; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100dvh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: 100%; max-width: 440px; padding: 36px; border: 1px solid #e2e8f0; border-radius: 24px; background: white; box-shadow: 0 16px 48px #0f172a0c; }
.brand-mark { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: #0f172a; color: white; font-size: 26px; font-weight: 800; }
.eyebrow { margin: 24px 0 8px; color: #475569; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .14em; }
h1 { margin: 0 0 12px; font-size: 30px; letter-spacing: -.03em; }
.intro, .footnote { color: #475569; line-height: 1.6; }
.intro { margin: 0 0 28px; }
label { display: block; margin: 18px 0 8px; font-weight: 600; font-size: 14px; }
input, button { width: 100%; min-height: 48px; font: inherit; border-radius: 10px; }
input { padding: 10px 12px; border: 1px solid #cbd5e1; background: #fff; }
input:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid #2563eb; outline-offset: 3px; }
button { margin-top: 24px; border: 0; color: white; background: #0f172a; font-weight: 650; cursor: pointer; }
button:disabled { opacity: .6; cursor: wait; }
#message { min-height: 24px; color: #b91c1c; font-size: 14px; line-height: 1.5; }
.footnote { border-top: 1px solid #e2e8f0; padding-top: 20px; font-size: 13px; margin-bottom: 0; }
a { color: #1d4ed8; }
@media (max-width: 480px) { body { padding: 16px; } .auth-card { padding: 28px 24px; } }