.auth-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(34,197,94,.18), transparent 34%),
    radial-gradient(circle at 90% 10%, rgba(56,189,248,.16), transparent 32%),
    #0d1117;
}
.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.auth-card {
  width: min(100%, 420px);
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(21,27,35,.92);
  box-shadow: 0 24px 80px rgba(0,0,0,.32);
}
.brand-row { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.brand-row h1 { margin: 0; font-size: 25px; }
.auth-form { display: grid; gap: 14px; }
.captcha-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px dashed rgba(255,255,255,.18);
  border-radius: 8px;
  background: rgba(255,255,255,.04);
}
#captchaQuestion { font-size: 24px; font-weight: 900; }
.auth-footer { margin: 18px 0 0; text-align: center; color: var(--muted); }
.auth-footer a { color: var(--green); font-weight: 800; }