:root{--navy:#17365d;--blue:#2d6cdf;--bg:#eef3f8;--text:#1d2b3d;--muted:#657386;--border:#d7e0ea;--danger:#9e2a24}
*{box-sizing:border-box}
html,body{min-height:100%}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(145deg,#e9f0f8,#f8fafc);color:var(--text)}
.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{width:min(420px,100%);background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:0 24px 70px rgba(23,54,93,.16);padding:30px}
.brand-mark{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;background:var(--navy);color:#fff;font-weight:800;margin-bottom:22px}
.eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:11px;color:var(--muted);font-weight:750}
h1{font-size:26px;line-height:1.2;margin:6px 0 8px;letter-spacing:-.025em}
p{color:var(--muted);font-size:14px;margin:0 0 24px}
form{display:grid;gap:16px}
label{font-size:12px;color:#4d5d70;font-weight:700}
input{display:block;width:100%;margin-top:6px;border:1px solid #bdc9d7;border-radius:9px;padding:11px 12px;font:inherit;color:var(--text);background:#fff}
input:focus{outline:3px solid #dbe8ff;border-color:var(--blue)}
button{min-height:42px;border:0;border-radius:9px;background:var(--blue);color:#fff;font:inherit;font-weight:700;cursor:pointer}
button:disabled{opacity:.65;cursor:wait}
.login-error{min-height:18px;color:var(--danger);font-size:12px;font-weight:650}
@media(max-width:480px){.login-card{padding:24px}.login-shell{padding:14px}}