.app-message {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: start center;
  padding-top: 90px;
  z-index: 9999;
  pointer-events: none;
}

.app-message-card {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  border: 1.5px solid rgba(239,68,68,.25);
  border-radius: 14px;
  padding: 14px 18px;
  min-width: 320px;
  max-width: 460px;
  color: #991b1b;
  font-weight: 700;
  box-shadow: 0 18px 40px rgba(239,68,68,.15);
}

.app-message.hidden {
  display: none;
}