.login-screen {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--green), #0d2e22);
}

.login-screen[hidden] { display: none; }

.login-card {
  width: min(420px, calc(100vw - 32px));
  background: var(--paper);
  padding: 34px;
  border-radius: 18px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, .3);
}

.login-card label {
  display: grid;
  gap: 6px;
  margin: 16px 0;
  font-size: 12px;
  font-weight: 750;
}

.login-card .primary { width: 100%; margin-top: 8px; }
.login-brand { color: var(--ink); margin-bottom: 30px; }
.login-brand small { color: var(--muted); }
.error-text { color: var(--danger); font-size: 13px; }