:root{
  --bg:#0e1420; --surface:#161d2b; --surface-2:#1d2637;
  --line:#2a3547; --line-soft:#212b3d;
  --ink:#e8edf5; --ink-soft:#9aa7bd; --ink-faint:#64718a;
  --ok:#35c08a; --ok-bg:rgba(53,192,138,.12);
  --warn:#e5a13a; --warn-bg:rgba(229,161,58,.12);
  --crit:#ec5b6a; --crit-bg:rgba(236,91,106,.12);
  --brand:#4d9fff;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  background:radial-gradient(1200px 600px at 50% -10%, #16203400, var(--bg)) , var(--bg);
  color:var(--ink);font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  -webkit-font-smoothing:antialiased;
}
.login-wrap{width:100%;max-width:400px;text-align:center}
.login-card{
  background:linear-gradient(180deg,var(--surface),var(--bg));
  border:1px solid var(--line);border-radius:16px;padding:40px 34px 34px;
  box-shadow:0 24px 70px rgba(0,0,0,.5);
}
.brand-mark{
  width:52px;height:52px;border-radius:13px;margin:0 auto 18px;
  background:linear-gradient(135deg,var(--brand),#2d6fd6);display:grid;place-items:center;
  box-shadow:0 0 0 1px rgba(77,159,255,.3),0 10px 26px rgba(77,159,255,.3);
}
.brand-mark svg{width:28px;height:28px}
h1{font-size:22px;font-weight:700;letter-spacing:-.02em}
.sub{font-size:13px;color:var(--ink-faint);margin-top:6px;margin-bottom:26px}
.google-btn{
  display:flex;align-items:center;justify-content:center;gap:11px;
  background:#fff;color:#1f2430;text-decoration:none;
  font-size:14.5px;font-weight:600;padding:13px 18px;border-radius:10px;
  transition:transform .12s, box-shadow .12s;
}
.google-btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.35)}
.note{font-size:12px;color:var(--ink-faint);margin-top:16px}
.msg{font-size:13px;border-radius:10px;padding:11px 14px;margin-bottom:18px;text-align:left}
.msg.ok{background:var(--ok-bg);border:1px solid rgba(53,192,138,.3);color:var(--ok)}
.msg.warn{background:var(--warn-bg);border:1px solid rgba(229,161,58,.3);color:var(--warn)}
.msg.err{background:var(--crit-bg);border:1px solid rgba(236,91,106,.3);color:var(--crit)}
.foot{margin-top:22px;font-size:11.5px;color:var(--ink-faint)}