/* ============================================================================
 * ec-toast-undo — Toast com ação inline (undo)
 * ----------------------------------------------------------------------------
 * Story 4.4 / EPIC-004
 *
 * Notificação não-bloqueante para ações otimistas. Substitui modais de
 * confirmação para ações reversíveis (marcar pago, marcar retirado, etc.).
 * Auto-dismiss em 5s (8s para erros). Hover pausa.
 *
 * Variantes:
 *   .ec-toast-undo                — base (info)
 *   .ec-toast-undo.with-action    — info + botão de ação inline
 *   .ec-toast-undo.is-error       — erro recuperável (borda esquerda bordô)
 *
 * Uso via API JS:
 *   EcToast.show({ message, action, severity, duration })
 *
 * Acessibilidade:
 * - role="status" para info, role="alert" para erros
 * - aria-live polite/assertive correspondente
 * - prefers-reduced-motion: sem slide
 * ========================================================================= */

.ec-toast-container {
  position: fixed;
  bottom: var(--ec-space-4);
  right: var(--ec-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--ec-space-2);
  z-index: 9999;
  pointer-events: none;
  max-width: calc(100vw - var(--ec-space-8));
}

@media (max-width: 767px) {
  .ec-toast-container {
    left: var(--ec-space-4);
    right: var(--ec-space-4);
    bottom: calc(var(--ec-space-4) + env(safe-area-inset-bottom, 0px));
    align-items: center;
  }
}

.ec-toast-undo {
  display: flex;
  align-items: center;
  gap: var(--ec-space-4);
  background: var(--ec-white);
  color: var(--ec-black);
  border: 0.5px solid var(--ec-gray-100);
  border-radius: var(--ec-radius-md);
  padding: var(--ec-space-3) var(--ec-space-4);
  box-shadow: var(--ec-shadow-modal);
  font-family: var(--ec-font-sans);
  font-size: 14px;
  line-height: 1.4;
  pointer-events: auto;
  min-width: 260px;
  max-width: 420px;
  transform: translateY(8px);
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.ec-toast-undo.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.ec-toast-undo.is-leaving {
  transform: translateY(8px);
  opacity: 0;
}

.ec-toast-undo.is-error {
  border-left: 3px solid var(--ec-state-error);
}

.ec-toast-undo__message {
  flex: 1;
  margin: 0;
  color: var(--ec-black);
}

.ec-toast-undo.is-error .ec-toast-undo__message {
  color: var(--ec-state-error);
}

.ec-toast-undo__action {
  background: none;
  border: none;
  border-bottom: 1.5px solid var(--ec-yellow);
  color: var(--ec-black);
  font-family: var(--ec-font-sans);
  font-size: 14px;
  font-weight: 500;
  padding: 2px 0;
  cursor: pointer;
  white-space: nowrap;
}

.ec-toast-undo__action:hover,
.ec-toast-undo__action:focus-visible {
  border-bottom-color: var(--ec-black);
}

.ec-toast-undo__close {
  background: none;
  border: none;
  color: var(--ec-gray-600);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--ec-radius-sm);
  flex-shrink: 0;
}

.ec-toast-undo__close:hover,
.ec-toast-undo__close:focus-visible {
  color: var(--ec-black);
  background: var(--ec-gray-50);
}

@media (prefers-reduced-motion: reduce) {
  .ec-toast-undo {
    transition: none;
  }
}