/* 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;
}

/* Skip navigation link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: #000;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 100;
    font-weight: 600;
    border-radius: 0 0 4px 0;
}

.skip-link:focus {
    top: 0;
}

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

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Remove default focus for mouse users */
*:focus:not(:focus-visible) {
    outline: none;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0099ff;
        --color-border: #333;
    }
    
    :root[data-theme="light"] {
        --color-primary: #0066cc;
        --color-border: #999;
    }
}

/* 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;
    }
}

/* Focus-within for keyboard navigation */
nav:focus-within .nav-list {
    display: flex;
}

/* Accessible table styling */
table {
    border-collapse: collapse;
    width: 100%;
}

th {
    text-align: left;
    font-weight: 600;
}

/* Print styles for accessibility */
@media print {
    .no-print,
    .skip-link,
    .mobile-menu-toggle,
    .theme-toggle,
    .search-toggle,
    .cookie-notice {
        display: none !important;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
    }
    
    a[href^="#"]::after,
    a[href^="javascript:"]::after {
        content: "";
    }
}