/* ============================================================
   TOAST — Bottom-center toast messages (CSS-only auto-fade).
   Root class: .toast-container + .toast
   ============================================================ */

#toast-region {
  position: fixed;
  bottom: var(--space-l);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  pointer-events: none;
  width: max-content;
  max-width: min(560px, calc(100vw - 2 * var(--space-l)));
}

.toast {
  padding: var(--space-s) var(--space-m);
  border-radius: var(--radius);
  font-size: var(--step-0);
  border-left: 4px solid;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
  pointer-events: auto;
  /* enter then fade out — total visible ~6.35s */
  animation: toast-enter 0.35s ease-out,
             toast-exit  0.5s  ease-in  6s forwards;
}

.toast--error {
  background: var(--bg-secondary);
  border-color: var(--error);
  color: var(--text-primary);
}

.toast--success {
  background: var(--bg-secondary);
  border-color: var(--success);
  color: var(--text-primary);
}

.toast--warning {
  background: var(--bg-secondary);
  border-color: var(--warning);
  color: var(--text-primary);
  animation: toast-enter 0.35s ease-out;
}

.toast--warning a {
  color: inherit;
  text-decoration: underline;
}

@keyframes toast-enter {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes toast-exit {
  from { opacity: 1; }
  to   { opacity: 0; pointer-events: none; }
}