.toast-stack {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 60;
  align-items: center;
  pointer-events: none;
  width: min(420px, 92vw);
}

.toast {
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(12px) scale(0.96);
  transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-spring);
  max-width: 100%;
  text-align: center;
}
.toast.show { opacity: 1; transform: translateY(0) scale(1); }

.toast-success { border-color: var(--success); color: var(--success); }
.toast-error { border-color: var(--danger); color: var(--danger); }
.toast-info { border-color: var(--info); color: var(--info); }