/* Estilos de acessibilidade */

/* Esconde conteúdo visualmente, mas mantém acessível para leitores de tela */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Estilo para navegação por teclado */
.keyboard-navigation a:focus,
.keyboard-navigation button:focus,
.keyboard-navigation input:focus,
.keyboard-navigation select:focus,
.keyboard-navigation textarea:focus,
.keyboard-navigation [tabindex="0"]:focus {
    outline: 3px solid #4a6cf7;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(74, 108, 247, 0.3);
    border-radius: 2px;
}

/* Estilo para links de pular para conteúdo */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #4a6cf7;
    color: white;
    padding: 8px 16px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* Melhorias de contraste */
@media (prefers-contrast: more) {
    * {
        color: black !important;
        background-color: white !important;
    }
    
    a, button, [role="button"] {
        text-decoration: underline !important;
    }
}

/* Estilo para foco visível */
.focus-visible {
    position: relative;
}

.focus-visible::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border: 2px solid #4a6cf7;
    border-radius: 4px;
    pointer-events: none;
}

/* Melhorias para leitores de tela */
[aria-hidden="true"] {
    display: none;
}

/* Estilo para elementos desabilitados */
[aria-disabled="true"],
:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Melhorias para animações */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Estilo para mensagens de status */
[role="status"],
[aria-live="polite"],
[aria-live="assertive"] {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

[role="status"].visible,
[aria-live="polite"].visible,
[aria-live="assertive"].visible {
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    clip: auto;
    white-space: normal;
}