:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #172033; background: #eef3f9; }
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 28px 16px; background: radial-gradient(circle at top left, #dce8fb 0, transparent 36%), linear-gradient(145deg, #f8fafc, #eaf0f8); }
.login-card { width: min(430px, 100%); border: 1px solid #dce4ef; border-radius: 22px; background: rgb(255 255 255 / 94%); padding: 34px; box-shadow: 0 24px 70px rgb(32 55 93 / 14%); }
.brand-mark { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; background: #1e355f; color: #fff; font-weight: 900; letter-spacing: -.04em; margin-bottom: 24px; }
.eyebrow { margin: 0 0 8px; color: #71809a; font-size: 10px; font-weight: 800; letter-spacing: .14em; }
h1 { margin: 0; font-size: 30px; letter-spacing: -.04em; }
.subtitle { color: #73809a; margin: 10px 0 25px; font-size: 13px; line-height: 1.6; }
form { display: grid; gap: 15px; }
label { display: grid; gap: 7px; color: #5c6b82; font-size: 11px; font-weight: 800; }
input { width: 100%; border: 1px solid #d4deea; border-radius: 10px; background: #fff; padding: 12px 13px; color: #172033; font: inherit; outline: none; }
input:focus { border-color: #5d7fbd; box-shadow: 0 0 0 3px #dce8fb; }
button { border: 0; border-radius: 10px; background: #1e355f; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 800; }
button:disabled { cursor: wait; opacity: .7; }
.error { min-height: 18px; margin: -3px 0 0; color: #ad3c45; font-size: 12px; }
.security-note { margin: 20px 0 0; color: #95a1b2; font-size: 10px; line-height: 1.5; text-align: center; }