/**
 * Accessibility Enhancements
 * ARIA labels, focus management, keyboard navigation, high contrast mode
 */

/* Focus Management */
.bbai-focus-trap {
    position: relative;
}

.bbai-focus-trap:focus-within {
    outline: 2px solid var(--bbai-primary);
    outline-offset: 2px;
}

/* Skip to Content Link */
.bbai-skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--bbai-primary);
    color: white;
    padding: var(--bbai-space-3) var(--bbai-space-4);
    text-decoration: none;
    z-index: 100000;
    border-radius: 0 0 var(--bbai-radius) 0;
}

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .bbai-btn,
    .bbai-card,
    .bbai-input {
        border-width: 2px;
    }

    .bbai-btn-primary {
        border: 2px solid var(--bbai-primary);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Screen Reader Only */
.bbai-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;
}

/* Focus Visible */
.bbai-btn:focus-visible,
.bbai-link:focus-visible,
.bbai-input:focus-visible {
    outline: 3px solid var(--bbai-primary);
    outline-offset: 2px;
}

/* ARIA Live Regions */
.bbai-live-region {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Keyboard Navigation Indicators */
.bbai-keyboard-nav .bbai-btn:focus,
.bbai-keyboard-nav .bbai-link:focus {
    outline: 3px solid var(--bbai-primary);
    outline-offset: 2px;
}

/* High Contrast Toggle */
.bbai-high-contrast {
    --bbai-text: #000000;
    --bbai-text-muted: #333333;
    --bbai-bg: #ffffff;
    --bbai-gray-50: #f5f5f5;
    --bbai-gray-100: #e0e0e0;
    --bbai-gray-200: #cccccc;
    --bbai-primary: #0066cc;
    --bbai-primary-hover: #0052a3;
    --bbai-success: #006600;
    --bbai-error: #cc0000;
    --bbai-warning: #cc6600;
}

.bbai-high-contrast .bbai-btn,
.bbai-high-contrast .bbai-card {
    border-width: 2px;
}

.bbai-high-contrast .bbai-btn-primary {
    background: var(--bbai-primary);
    border-color: var(--bbai-primary);
    color: white;
}

/* Dark Mode Accessibility */
[data-theme="dark"] .bbai-btn:focus-visible,
.bbai-dark-mode .bbai-btn:focus-visible {
    outline-color: var(--bbai-primary-light);
}