.login-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
}

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

.login-card {
  width: min(400px, 100%);
  display: grid;
  gap: 16px;
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(20, 30, 20, .14);
}

.login-logo {
  display: block;
  width: min(250px, 100%);
  height: auto;
  margin: 0 auto;
}

.login-card h1 { text-align: center; font-size: 1.35rem; }
.login-error { min-height: 1.25rem; margin: 0; color: var(--bad); font-weight: 700; }
.login-locked > .app-header, .login-locked > .layout { visibility: hidden; }