:root{--ink:#172033;--muted:#687386;--blue:#2563eb}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#eaf1ff,#f8fafc);font-family:Arial,sans-serif;color:var(--ink)}.login-card{width:min(420px,calc(100% - 32px));background:#fff;padding:38px;border-radius:16px;box-shadow:0 18px 55px #1e3a6b26}.eyebrow{text-transform:uppercase;font-size:11px;letter-spacing:.12em;font-weight:700;color:var(--muted);margin:0 0 9px}h1{margin:0;font-size:31px}.intro{color:var(--muted);line-height:1.45;margin:12px 0 24px}.alert{padding:12px;background:#fef2f2;color:#b91c1c;border-radius:8px;font-size:14px}label{display:block;font-size:13px;font-weight:700;margin:14px 0}input{width:100%;margin-top:6px;padding:11px;border:1px solid #cbd5e1;border-radius:7px;font:inherit}button{width:100%;margin-top:10px;border:0;border-radius:8px;background:var(--blue);color:#fff;padding:13px;font-weight:700;cursor:pointer}