/* ===================================
   Accessibility Enhancements
   WCAG 2.2 Level AA Compliance
   =================================== */

/* Skip to Content Link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    z-index: 10000;
    padding: 12px 24px;
    background: #0066FF;
    color: #FFFFFF;
    text-align: center;
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    font-family: 'Heebo', sans-serif;
    transition: top 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.skip-to-content:focus {
    top: 0;
    outline: 3px solid #D4AF37;
    outline-offset: 3px;
}

/* Enhanced Focus Visible States */
*:focus-visible {
    outline: 3px solid #0066FF;
    outline-offset: 2px;
    transition: outline-offset 0.2s ease;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid #0066FF;
    outline-offset: 3px;
}

.button:focus-visible {
    outline: 3px solid #0066FF;
    outline-offset: 4px;
    box-shadow: 0 0 0 6px rgba(0, 102, 255, 0.2);
}

/* High Contrast Support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #1a1a1a;
        --background: #FFFFFF;
        --link-color: #0000EE;
        --link-visited: #551A8B;
    }
    
    body {
        color: var(--text-primary);
        background: var(--background);
    }
    
    a {
        color: var(--link-color);
    }
    
    a:visited {
        color: var(--link-visited);
    }
    
    .button {
        border: 3px solid currentColor;
    }
}

/* Reduced Motion Support */
@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;
    }
    
    .htmx-indicator,
    .button__spinner {
        animation: none !important;
    }
}

/* Form Error States - WCAG Compliant */
.form-error {
    display: block;
    margin-top: 6px;
    font-size: 14px;
    color: #DC2626;
    font-weight: 500;
}

.form-input[aria-invalid="true"],
.form__control[aria-invalid="true"] {
    border-color: #DC2626;
    border-width: 2px;
}

.form-input[aria-invalid="true"]:focus,
.form__control[aria-invalid="true"]:focus {
    outline: 3px solid #DC2626;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.1);
}

/* Screen Reader Only Text */
.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;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Live Region Announcements */
[role="status"],
[role="alert"],
[aria-live] {
    position: relative;
}

/* Hidden Attribute Support */
[hidden] {
    display: none !important;
}

/* Keyboard Navigation Indicators */
.header__nav-link:focus-visible,
.footer-links a:focus-visible,
.canvas-menu__nav a:focus-visible {
    background: rgba(0, 102, 255, 0.1);
    outline: 3px solid #0066FF;
    outline-offset: 2px;
}

/* Button Focus States */
.header__hamburger:focus-visible,
.canvas-menu__close:focus-visible,
.bottom-nav__fab:focus-visible {
    outline: 3px solid #D4AF37;
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(212, 175, 55, 0.2);
}

/* FAQ Buttons Accessibility */
.faq-item__question:focus-visible {
    outline: 3px solid #0066FF;
    outline-offset: -3px;
    background: rgba(0, 102, 255, 0.05);
}

/* Form Focus States */
.toolbar-search__input:focus-visible {
    outline: 3px solid #0066FF;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

/* Link Skip Navigation */
a.skip-link {
    position: absolute;
    top: -1000px;
    left: -1000px;
    height: 1px;
    width: 1px;
    text-align: left;
    overflow: hidden;
}

a.skip-link:active,
a.skip-link:focus,
a.skip-link:hover {
    left: 0;
    top: 0;
    width: auto;
    height: auto;
    overflow: visible;
    background: #0066FF;
    color: #FFFFFF;
    padding: 10px 20px;
    text-decoration: none;
    z-index: 10000;
}

/* Color Contrast Enhancements */
.text-muted,
.footer-about p,
.identity-text p {
    color: #4B5563; /* Darker for better contrast */
}

/* Ensure minimum touch target sizes (44x44px) */
.bottom-nav__item,
.header__hamburger,
.canvas-menu__close,
.social-links a,
button {
    min-width: 44px;
    min-height: 44px;
}

/* Print Styles for Accessibility */
@media print {
    .skip-to-content,
    .header,
    .bottom-nav,
    .canvas-menu,
    .canvas-overlay,
    .action-sheet {
        display: none !important;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
    }
    
    @page {
        margin: 2cm;
    }
}

/* Focus Trap Indicators for Modals */
.action-sheet[aria-modal="true"]:focus-within {
    outline: none;
}

.action-sheet__panel:focus-within {
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.3);
}

/* Improved Checkbox/Radio Focus */
input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
    outline: 3px solid #0066FF;
    outline-offset: 2px;
}

/* Dark Mode Support for Accessibility */
@media (prefers-color-scheme: dark) {
    .skip-to-content {
        background: #1E40AF;
        color: #FFFFFF;
    }
    
    *:focus-visible {
        outline-color: #60A5FA;
    }
}

/* Accessible Loading States */
[aria-busy="true"] {
    cursor: wait;
    opacity: 0.7;
}

/* Status Messages */
[role="status"][aria-live="polite"] {
    padding: 12px 16px;
    border-radius: 8px;
    background: rgba(0, 102, 255, 0.1);
    color: #0066FF;
    font-weight: 500;
}

[role="alert"][aria-live="assertive"] {
    padding: 12px 16px;
    border-radius: 8px;
    background: rgba(220, 38, 38, 0.1);
    color: #DC2626;
    font-weight: 600;
}