/* === STYLES D'ACCESSIBILITÉ RGAA === */

/* Classe pour masquer visuellement mais garder accessible aux lecteurs d'écran */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Liens d'évitement */
.skip-links {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 9999;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 6px;
    background: var(--primary-color, #1976d2);
    color: var(--on-primary, white);
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 4px 4px;
    font-weight: 500;
    font-size: 14px;
    transition: top 0.3s ease;
    z-index: 10000;
    opacity: 0;
    transform: translateY(-10px);
}

.skip-link:focus {
    top: 0;
    opacity: 1;
    transform: translateY(0);
    outline: 3px solid var(--tertiary-color, #ff9800);
    outline-offset: 2px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Amélioration du focus visible */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Focus spécifique pour les boutons */
button:focus,
.btn-primary:focus,
.btn-secondary:focus,
.btn-icon:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 1px var(--surface), 0 0 0 4px var(--primary-color);
}

/* Focus pour les liens */
a:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    text-decoration: underline;
}

/* Focus pour les champs de formulaire */
input:focus,
textarea:focus,
select:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    border-color: var(--primary-color);
}

/* Amélioration du contraste pour les éléments interactifs */
.filter-chip:focus,
.tag-item:focus,
.resource-card:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 1px var(--surface), 0 0 0 4px var(--primary-color);
}

/* États ARIA pour les boutons pressés */
button[aria-pressed="true"],
.filter-chip[aria-pressed="true"] {
    background-color: var(--primary-container);
    color: var(--on-primary-container);
    border-color: var(--primary-color);
}

/* Indicateur visuel pour les éléments expandables */
button[aria-expanded="false"]::after {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 8px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    vertical-align: middle;
}

button[aria-expanded="true"]::after {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 8px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 4px solid currentColor;
    vertical-align: middle;
}

[data-theme="dark"] *:focus {
    outline-color: var(--primary-color);
}

/* Styles pour les régions live (ajoutées dynamiquement) */
/* Hide aria-live elements that are meant for announcements only, but exclude visible chat interfaces AND resources lists */
[aria-live]:not(.chat-messages):not(#chatMessages):not(.resources-list) {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Specific rule for chat messages to ensure they remain visible */
.chat-messages[aria-live],
#chatMessages[aria-live] {
    position: static;
    left: auto;
    width: auto;
    height: auto;
    overflow: visible;
}

[aria-live].announce {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    padding: 12px;
    background: var(--surface-container);
    border: 1px solid var(--outline);
    border-radius: 8px;
    margin: 8px 0;
}

/* === VALIDATION DE FORMULAIRES RGAA === */

/* États de validation des champs */
.form-group {
    position: relative;
    margin-bottom: 16px;
}

/* Champs requis */
.form-group label[for]::after {
    content: "";
}

.form-group.required label[for]::after {
    content: " *";
    color: var(--error);
    font-weight: bold;
    margin-left: 2px;
}

/* Champs valides */
input:valid,
textarea:valid,
select:valid {
    border-color: var(--success, #4caf50);
}

input:valid:focus,
textarea:valid:focus,
select:valid:focus {
    outline-color: var(--success, #4caf50);
    border-color: var(--success, #4caf50);
}

/* Champs invalides */
input:invalid,
textarea:invalid,
select:invalid {
    border-color: var(--error);
}

input:invalid:focus,
textarea:invalid:focus,
select:invalid:focus {
    outline-color: var(--error);
    border-color: var(--error);
}

/* Champs avec erreurs personnalisées */
.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select {
    border-color: var(--error);
    background-color: rgba(244, 67, 54, 0.05);
}

.form-group.has-error input:focus,
.form-group.has-error textarea:focus,
.form-group.has-error select:focus {
    outline-color: var(--error);
    border-color: var(--error);
    box-shadow: 0 0 0 2px rgba(244, 67, 54, 0.2);
}

/* Messages d'erreur */
.error-message {
    color: var(--error);
    font-weight: 500;
    margin-top: 4px;
    display: flex;
    align-items: flex-start;
    gap: 6px;
    font-size: 0.875rem;
    line-height: 1.4;
}

.error-message::before {
    content: "⚠";
    font-size: 1.1em;
    flex-shrink: 0;
    margin-top: 1px;
}

.error-message[role="alert"] {
    animation: errorSlideIn 0.3s ease-out;
}

@keyframes errorSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-message::before {
    content: "✓";
    font-size: 1.1em;
    flex-shrink: 0;
    margin-top: 1px;
}

/* Messages d'aide */
.help-text {
    font-size: 0.875rem;
    color: var(--on-surface-variant);
    margin-top: 4px;
    line-height: 1.4;
}

/* Validation en temps réel */
.form-group.validating input,
.form-group.validating textarea,
.form-group.validating select {
    border-color: var(--primary-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24'%3E%3Cpath fill='%23666' d='M12,4a8,8 0 0,1 7.89,6.7 1.53,1.53 0 0,0 1.49,1.3 1.5,1.5 0 0,0 1.48-1.75 11,11 0 0,0-21.72,0A1.5,1.5 0 0,0 2.62,12a1.53,1.53 0 0,0 1.49-1.3A8,8 0 0,1 12,4Z'%3E%3CanimateTransform attributeName='transform' dur='0.75s' repeatCount='indefinite' type='rotate' values='0 12 12;360 12 12'/%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.form-errors-summary h3 {
    color: var(--error);
    margin: 0 0 12px 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-errors-summary h3::before {
    content: "⚠";
    font-size: 1.2em;
}

.form-errors-summary ul {
    margin: 0;
    padding-left: 20px;
    list-style-type: disc;
}

.form-errors-summary li {
    margin-bottom: 4px;
    color: var(--error);
}

.form-errors-summary a {
    color: var(--error);
    text-decoration: underline;
    font-weight: 500;
}

.form-errors-summary a:hover,
.form-errors-summary a:focus {
    text-decoration-thickness: 2px;
}

/* Mode de contraste élevé */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --on-surface: #000000;
        --surface: #ffffff;
        --outline: #000000;
        --error: #cc0000;
        --success: #006600;
    }

    button,
    .btn-primary,
    .btn-secondary {
        border: 2px solid currentColor;
    }

    .error-message {
        background: rgba(204, 0, 0, 0.1);
        padding: 8px;
        border-radius: 4px;
    }
}

/* Respect des préférences de mouvement réduit */
@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;
    }

    .error-message[role="alert"] {
        animation: none;
    }
}

/* Indicateurs d'état pour les éléments interactifs */
.loading[aria-busy="true"]::after {
    content: " (Chargement en cours...)";
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

/* Amélioration des liens */
a {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

a:hover {
    text-decoration-thickness: 2px;
}

/* Responsive pour l'accessibilité */
@media (max-width: 768px) {
    .skip-link {
        left: 4px;
        font-size: 16px;
        /* Éviter le zoom sur iOS */
    }

    button:focus,
    .btn-primary:focus,
    .btn-secondary:focus {
        outline-width: 2px;
        outline-offset: 1px;
    }

    .error-message {
        font-size: 16px;
        /* Éviter le zoom sur iOS */
    }
}

/* Amélioration pour les utilisateurs avec des difficultés motrices */
@media (pointer: coarse) {

    button,
    .btn-primary,
    .btn-secondary,
    .btn-icon {
        min-height: 44px;
        min-width: 44px;
    }

    .filter-chip {
        min-height: 44px;
        padding: 12px 16px;
    }

    input,
    textarea,
    select {
        min-height: 44px;
        padding: 12px;
    }
}

/* === STYLES POUR LES NOTIFICATIONS TOAST === */
.toast-container .toast.error {
    background: var(--error);
    color: white;
    border-left: 4px solid rgba(255, 255, 255, 0.8);
}

.toast-container .toast.success {
    background: var(--success, #4caf50);
    color: white;
    border-left: 4px solid rgba(255, 255, 255, 0.8);
}

.toast-container .toast.warning {
    background: #ff9800;
    color: white;
    border-left: 4px solid rgba(255, 255, 255, 0.8);
}

.toast-container .toast[role="alert"] {
    animation: toastSlideIn 0.3s ease-out;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* === STYLES POUR LES MODALES ACCESSIBLES === */
.modal[aria-hidden="true"] {
    display: none;
}

.modal[aria-hidden="false"] {
    display: flex;
}

.modal-content {
    position: relative;
}

.modal-content:focus {
    outline: none;
}

/* === STYLES POUR LES TABLEAUX ACCESSIBLES === */
table {
    border-collapse: collapse;
    width: 100%;
}

th {
    background: var(--surface-container);
    font-weight: 600;
    text-align: left;
    padding: 12px;
    border-bottom: 2px solid var(--outline);
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--outline-variant);
}

/* Amélioration pour les tableaux complexes */
table[role="table"] caption {
    font-weight: 600;
    margin-bottom: 8px;
    text-align: left;
}

/* === STYLES POUR LES LISTES ACCESSIBLES === */
ul[role="list"],
ol[role="list"] {
    list-style: none;
    padding: 0;
}

ul[role="list"] li::before,
ol[role="list"] li::before {
    content: "• ";
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 8px;
}

ol[role="list"] {
    counter-reset: list-counter;
}

ol[role="list"] li {
    counter-increment: list-counter;
}

ol[role="list"] li::before {
    content: counter(list-counter) ". ";
}