/* ── Toast notification ── */
#toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--surface3);
  color: var(--text);
  border: 1px solid var(--border-hi);
  border-radius: 8px;
  padding: 0.55rem 1.1rem;
  font-size: 0.78rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 999;
  white-space: nowrap;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.toast-err { border-color: var(--error); color: var(--error); }