/* Styles pour l'accessibilité des formulaires */

/* Éléments cachés mais accessibles pour les lecteurs d'écran */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Styles pour les messages d'erreur */
.field-error {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 5px;
    padding-left: 5px;
    border-left: 3px solid #e74c3c;
    display: none;
    transition: opacity 0.3s ease-in-out;
}

.field-error.visible {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Styles pour les champs requis */
.required {
    color: #e74c3c;
    margin-left: 3px;
}

.required-fields-info {
    font-size: 0.85rem;
    margin-top: 20px;
    color: #666;
    text-align: right;
}

/* Styles pour les états des champs */
input, textarea {
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

input[aria-invalid="true"], textarea[aria-invalid="true"] {
    border-color: #e74c3c;
    background-color: rgba(231, 76, 60, 0.05);
}

input[aria-invalid="false"]:not(:placeholder-shown), 
textarea[aria-invalid="false"]:not(:placeholder-shown) {
    border-color: #2ecc71;
    background-color: rgba(46, 204, 113, 0.05);
}

/* Focus states pour l'accessibilité */
input:focus, textarea:focus, button:focus, a:focus {
    outline: 2px solid #1a73e8;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.2);
}

input[aria-invalid="true"]:focus, textarea[aria-invalid="true"]:focus {
    outline-color: #e74c3c;
    box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.2);
}

/* Style pour le compteur de caractères */
.character-counter {
    font-size: 0.85rem;
    text-align: right;
    margin-top: 5px;
    color: #666;
    transition: color 0.3s ease;
}

.character-counter.limit-near {
    color: #e67e22;
}

.character-counter.limit-exceeded {
    color: #e74c3c;
}

/* Styles pour les messages du formulaire */
.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-message.success {
    background-color: rgba(46, 204, 113, 0.1);
    border-left: 4px solid #2ecc71;
    color: #27ae60;
}

.form-message.error {
    background-color: rgba(231, 76, 60, 0.1);
    border-left: 4px solid #e74c3c;
    color: #c0392b;
}

.form-message i {
    font-size: 1.5rem;
}

.form-message p {
    margin: 0;
    color: inherit;
}

/* Animations du bouton de soumission */
.btn-submit {
    position: relative;
    overflow: hidden;
}

.btn-submit::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn-submit:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    20% {
        transform: scale(25, 25);
        opacity: 0.5;
    }
    100% {
        opacity: 0;
        transform: scale(40, 40);
    }
}

/* Pour les utilisateurs qui préfèrent réduire les animations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
    }

    .btn-submit:focus:not(:active)::after {
        animation: none;
    }
}

/* États du bouton */
.btn-submit[disabled] {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-submit.success {
    background-color: #2ecc71;
}

.btn-submit.error {
    background-color: #e74c3c;
}

/* Contrastes améliorés pour l'accessibilité */
.form-group label {
    color: var(--primary);
    font-weight: 600;
}

::placeholder {
    color: #767676; /* WCAG AA compliant */
    opacity: 1;
}
:root { color-scheme: light dark; }


/* Accessibilité : lien d'évitement */
.skip-link {
  position:absolute;
  left:-9999px;
  top:auto;
  width:1px;
  height:1px;
  overflow:hidden;
}
.skip-link:focus {
  left:1rem;
  top:1rem;
  width:auto;
  height:auto;
  padding:.5rem .75rem;
  background:#fff;
  color:#000;
  z-index:1000;
  border-radius:.5rem;
  box-shadow:0 2px 8px rgba(0,0,0,.2);
}

/* Bouton fermeture notification */
.notification-close {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    padding: 0 0 0 12px;
    opacity: 0.75;
    flex-shrink: 0;
    outline: none;
}

.notification-close:hover {
    opacity: 1;
}

.notification-close:focus-visible {
    opacity: 1;
    outline: 2px solid rgba(255,255,255,0.6);
    border-radius: 3px;
}