#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
}

.toast {
  transition: opacity 0.3s ease;
  padding: 10px 14px;
  border-radius: 4px;
  font-family: monospace;
  background: #333;
  color: #fff;
  opacity: 0.95;
  min-width: 220px;
  box-shadow: 0 0 6px #000;
}

.toast.fade-out {
  opacity: 0;
}

.toast.ok    { background: #2e7d32; }
.toast.error { background: #c62828; }
.toast.info  { background: #1565c0; }
.toast.warn  { background: #ef6c00; }