:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: #172033; background: radial-gradient(circle at 20% 10%, #e8efff 0, transparent 34%), #f5f7fb; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(100%, 420px); padding: 42px; background: rgba(255,255,255,.94); border: 1px solid #e6eaf2; border-radius: 22px; box-shadow: 0 24px 70px rgba(34,48,82,.12); }
.brand-mark { width: 48px; height: 48px; display: grid; place-items: center; color: white; font-weight: 800; font-size: 24px; border-radius: 14px; background: #356df3; }
.eyebrow { margin: 24px 0 8px; color: #356df3; font-size: 12px; font-weight: 800; letter-spacing: .14em; }
h1 { margin: 0; font-size: 28px; letter-spacing: -.03em; }
.subtitle { margin: 9px 0 28px; color: #6d7587; }
label { display: block; margin: 17px 0 7px; font-size: 14px; font-weight: 650; }
input { width: 100%; height: 48px; padding: 0 14px; border: 1px solid #ccd3df; border-radius: 10px; font: inherit; outline: none; }
input:focus { border-color: #356df3; box-shadow: 0 0 0 4px rgba(53,109,243,.12); }
button { width: 100%; height: 50px; margin-top: 25px; color: white; border: 0; border-radius: 10px; background: #356df3; font: inherit; font-weight: 750; cursor: pointer; }
button:hover { background: #245be0; }
.alert { margin: 0 0 18px; padding: 12px 14px; border-radius: 9px; font-size: 14px; }
.error { color: #a9232f; background: #fff0f1; }
.success { color: #176b45; background: #eaf8f1; }
.security-note { margin: 22px 0 0; color: #8991a2; font-size: 12px; text-align: center; }