/* Accessibility Enhancements */

/* Visually hidden class for screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible styles for keyboard navigation */
body.keyboard-nav *:focus {
    outline: 2px solid var(--accent) !important;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 4px 0;
    font-weight: 600;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid white;
    outline-offset: 2px;
}

/* Improve focus visibility for interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Remove default focus outline when not using keyboard */
:focus:not(:focus-visible) {
    outline: none;
}

/* Ensure sufficient color contrast for links */
a {
    text-decoration-skip-ink: auto;
}

/* Improve readability for reduced motion users */
@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;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border: #000000;
        --text-primary: #000000;
        --text-secondary: #1a1a1a;
    }
    
    .dark-theme {
        --border: #ffffff;
        --text-primary: #ffffff;
        --text-secondary: #e0e0e0;
    }
    
    button,
    a,
    input,
    textarea {
        border: 2px solid currentColor;
    }
}

/* Screen reader only content */
[aria-hidden="true"] {
    pointer-events: none;
}

/* Ensure proper ARIA live region announcements */
[role="status"],
[role="alert"],
[aria-live] {
    position: relative;
}

/* Make sure scrollable regions are keyboard accessible */
[role="region"][tabindex="0"] {
    overflow: auto;
}

/* Improve touch targets for mobile accessibility */
@media (pointer: coarse) {
    button,
    a,
    input[type="button"],
    input[type="submit"],
    input[type="reset"] {
        min-height: 44px;
        min-width: 44px;
    }
}