/**
 * Resume Geni Accessibility Styles
 * WCAG 2.1 AA compliant accessibility enhancements
 */

/* ==========================================================================
   Skip Links
   ========================================================================== */

/**
 * Skip to main content link
 * Visually hidden until focused, allows keyboard users to bypass navigation
 */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    padding: 12px 24px;
    background: var(--bg-elevated, #1a1a2e);
    color: var(--accent-primary, #FF8A4C);
    font-weight: 600;
    text-decoration: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: top 0.2s ease-in-out;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid var(--accent-primary, #FF8A4C);
    outline-offset: 2px;
}

/* ==========================================================================
   Focus Styles
   ========================================================================== */

/**
 * Enhanced focus indicators for all interactive elements
 * High contrast outline visible against any background
 */
:focus-visible {
    outline: 3px solid var(--accent-primary, #FF8A4C);
    outline-offset: 3px;
}

/* Remove default focus and rely on :focus-visible */
:focus:not(:focus-visible) {
    outline: none;
}

/* Custom focus styles for specific elements */
a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible {
    outline: 3px solid var(--accent-primary, #FF8A4C);
    outline-offset: 3px;
    border-radius: 4px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--accent-primary, #FF8A4C);
    outline-offset: 1px;
    border-color: var(--accent-primary, #FF8A4C);
}

/* Focus within for grouped elements */
.form-group:focus-within {
    background-color: var(--accent-subtle, rgba(255, 138, 76, 0.05));
    border-radius: 8px;
}

/* Card focus when contains focused element */
.card:focus-within {
    box-shadow: 0 0 0 3px var(--accent-glow, rgba(255, 138, 76, 0.3));
}

/* ==========================================================================
   ARIA Live Regions
   ========================================================================== */

/**
 * Screen reader only content
 * Accessible to screen readers but visually hidden
 */
.sr-only,
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/**
 * Show on focus for skip links and keyboard navigation hints
 */
.sr-only-focusable:focus,
.sr-only-focusable:active,
.visually-hidden-focusable:focus,
.visually-hidden-focusable:active {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/**
 * ARIA live regions for dynamic content updates
 */
[aria-live="polite"],
[aria-live="assertive"] {
    /* Keep space in layout to prevent layout shifts */
    min-height: 1em;
}

/**
 * Loading indicator for async operations
 */
.loading-indicator[aria-busy="true"]::after {
    content: " Loading...";
    color: var(--content-color, #666);
}

/* ==========================================================================
   Touch Targets
   ========================================================================== */

/**
 * Minimum 44x44px touch targets for mobile accessibility
 */
.btn,
.nav-link,
button,
[role="button"],
input[type="checkbox"] + label,
input[type="radio"] + label {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Ensure adequate spacing between touch targets */
.btn + .btn,
.nav-item + .nav-item {
    margin-left: 8px;
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

/**
 * Respect user's motion preferences
 * Disables animations and transitions for users with vestibular disorders
 */
@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;
    }

    /* Preserve essential loading states */
    .spinner-border,
    .spinner-grow {
        animation-duration: 1.5s !important;
    }
}

/* ==========================================================================
   Color Contrast
   ========================================================================== */

/**
 * High contrast mode support
 * Uses darker accent for better visibility in high contrast mode
 */
@media (prefers-contrast: more) {
    :root {
        --bs-primary: var(--accent-primary-dark, #c05000);
        --link-color: #0000EE;
    }

    a {
        text-decoration: underline;
    }

    .btn-primary {
        background: var(--accent-primary-dark, #c05000);
        border: 2px solid #000;
    }

    .card {
        border: 2px solid #000;
    }

    input,
    select,
    textarea {
        border: 2px solid #000;
    }
}

/* ==========================================================================
   Form Validation Accessibility
   ========================================================================== */

/**
 * Error state styles with accessible icons
 * Note: SVG background-image uses hardcoded color for browser compatibility
 */
.is-invalid {
    border-color: var(--color-danger, #dc3545) !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

/**
 * Error message styling
 */
.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--color-danger, #dc3545);
}

.is-invalid ~ .invalid-feedback {
    display: block;
}

/**
 * Success state styles
 */
.is-valid {
    border-color: var(--color-success, #198754) !important;
}

/* ==========================================================================
   Keyboard Navigation
   ========================================================================== */

/**
 * Visual indicators for keyboard navigation
 */
[data-keyboard-nav] .dropdown-item:focus {
    background-color: var(--accent-subtle, rgba(255, 138, 76, 0.1));
    outline: 2px solid var(--accent-primary, #FF8A4C);
    outline-offset: -2px;
}

/**
 * Tab panel keyboard navigation
 */
[role="tablist"] [role="tab"][aria-selected="true"] {
    border-bottom: 3px solid var(--accent-primary, #FF8A4C);
}

[role="tablist"] [role="tab"]:focus {
    outline: 3px solid var(--accent-primary, #FF8A4C);
    outline-offset: -3px;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .skip-link,
    .sr-only-focusable {
        display: none !important;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }

    .no-print {
        display: none !important;
    }
}