.u-mt-4 { margin-top: var(--e-4); }
.u-mb-4 { margin-bottom: var(--e-4); }
.u-text-center { text-align: center; }
.u-visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* ==== ACESSIBILIDADE WCAG 2.2 ==== */

/* Focus Visível Rigoroso (Offset e Contraste) */
:focus-visible {
  outline: 2px solid var(--cor-acao, #6B4A6E);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Área de toque mínima (44x44) para botões e inputs mobile */
button, .btn, input, select, textarea, .slot {
  min-height: 44px;
  min-width: 44px;
}

/* Link "Ir para o conteúdo" (Skip Link) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--cor-acao);
  color: #fff;
  padding: 12px;
  z-index: 9999;
  font-weight: bold;
  text-decoration: none;
  transition: top 0.2s ease-out;
}
.skip-link:focus {
  top: 0;
}

/* Região de mensagens Toast nativas (Aria Live) */
.aria-live-region {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Prefers Contrast */
@media (prefers-contrast: more) {
  :root {
    --tinta: #000000;
    --papel: #FFFFFF;
    --cor-acao: #0000EE;
    --cor-texto-suave: #333333;
    --cor-borda: #000000;
  }
  .btn-primario {
    border: 2px solid #000;
  }
}