/* AccessibilityFixer Frontend Styles - v1.3.0 Optimized */

/* Screen Reader Only - Utility class per elementi visibili solo agli screen reader */
.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;
    clip-path: inset(50%) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Skip Links - Navigazione rapida per screen reader e tastiera */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #000;
    color: #fff;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 10000;
    border-radius: 4px;
    transition: top 0.3s ease;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.skip-link:focus {
    top: 6px;
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.skip-link:hover {
    background: #333;
}

/* Long Description - Per descrizioni estese di immagini complesse */
.long-description {
    margin: 10px 0;
    padding: 12px 16px;
    background: #f8f9fa;
    border-left: 4px solid #007cba;
    font-size: 14px;
    line-height: 1.5;
    border-radius: 0 4px 4px 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Indicatori visivi per debug (solo se logging abilitato) */
.af-duplicate-id-fixed {
    animation: af-highlight 3s ease-out;
    border: 2px solid #4caf50 !important;
}

@keyframes af-highlight {
    0% {
        background-color: rgba(76, 175, 80, 0.3);
    }
    100% {
        background-color: transparent;
    }
}

/* Miglioramenti focus per accessibilità */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid #2196f3;
    outline-offset: 2px;
}

/* Contrasto migliorato per elementi di testo */
.af-contrast-improved {
    transition: color 0.3s ease, background-color 0.3s ease;
}

/* 
RIMOSSO: Indicatori CSS visibili a tutti gli utenti
Gli indicatori per link esterni e file sono gestiti dal JavaScript
come elementi .sr-only (visibili solo agli screen reader)
*/

/* Miglioramenti per tabelle accessibili */
table caption.sr-only {
    /* Mantieni sr-only ma assicurati che sia leggibile quando focused */
}

th[scope] {
    font-weight: 600;
}

/* Form accessibility improvements */
.af-field-error {
    color: #dc3545;
    font-size: 0.875em;
    margin-top: 4px;
}

input[aria-invalid="true"],
textarea[aria-invalid="true"],
select[aria-invalid="true"] {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.25);
}

/* Responsive design per accessibilità */
@media (max-width: 768px) {
    .skip-link {
        font-size: 16px;
        padding: 12px 20px;
    }
    
    .long-description {
        margin: 8px 0;
        padding: 8px 12px;
        font-size: 13px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .skip-link {
        background: #000;
        color: #fff;
        border: 2px solid #fff;
    }
    
    .af-duplicate-id-fixed {
        border-color: #000 !important;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .skip-link {
        transition: none;
    }
    
    .af-contrast-improved {
        transition: none;
    }
    
    .af-duplicate-id-fixed {
        animation: none;
        border: 2px solid #4caf50 !important;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .long-description {
        background: #2d3748;
        border-left-color: #4299e1;
        color: #e2e8f0;
    }
    
    .af-field-error {
        color: #fc8181;
    }
}

/* Print styles - nascondere elementi non necessari */
@media print {
    .skip-link,
    .sr-only {
        display: none !important;
    }
}