/* ============================================
   ACADEMIC PORTFOLIO - ACCESSIBILITY FEATURES
   Version: 2.1.0
   WCAG 2.1 AA Compliant
   ============================================ */

/* ============================================
   SKIP LINK - Keyboard Navigation
   ============================================ */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 12px 24px;
    z-index: 10000;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0 0 var(--border-radius) 0;
    transition: top 0.2s ease;
}

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

/* ============================================
   FOCUS INDICATORS - WCAG 2.1 AA
   ============================================ */
:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

/* Enhanced focus for buttons */
button:focus-visible,
.btn:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 6px rgba(0, 119, 182, 0.2);
}

/* Enhanced focus for form inputs */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 0;
    border-color: var(--accent);
}

/* Enhanced focus for links */
a:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Focus within cards */
.card:focus-within {
    box-shadow: 0 0 0 3px var(--accent);
}

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */
[data-high-contrast="true"] {
    --background: #FFFFFF;
    --card-background: #FFFFFF;
    --primary-navy: #000000;
    --primary-gray: #000000;
    --border-color: #000000;
    --text-muted: #333333;
}

[data-high-contrast="true"] body {
    color: #000000;
}

[data-high-contrast="true"] .card {
    border: 2px solid #000000;
}

[data-high-contrast="true"] .btn {
    border: 2px solid currentColor;
}

[data-high-contrast="true"] .sidebar {
    background: #000000;
    color: #FFFFFF;
}

[data-high-contrast="true"] .sidebar a {
    color: #FFFFFF;
}

[data-high-contrast="true"] .sidebar a:hover,
[data-high-contrast="true"] .sidebar a.active {
    background: #FFFFFF;
    color: #000000;
}

[data-high-contrast="true"] .form-input,
[data-high-contrast="true"] .form-select,
[data-high-contrast="true"] .form-textarea {
    border: 2px solid #000000;
}

[data-high-contrast="true"] .achievement-item {
    border: 2px solid #000000;
}

/* High contrast with dark mode */
[data-high-contrast="true"][data-theme-mode="dark"] {
    --background: #000000;
    --card-background: #000000;
    --primary-navy: #FFFFFF;
    --primary-gray: #FFFFFF;
    --border-color: #FFFFFF;
    --text-muted: #CCCCCC;
}

[data-high-contrast="true"][data-theme-mode="dark"] body {
    color: #FFFFFF;
}

[data-high-contrast="true"][data-theme-mode="dark"] .card {
    border: 2px solid #FFFFFF;
}

/* ============================================
   DYSLEXIA-FRIENDLY MODE
   ============================================ */
@font-face {
    font-family: 'OpenDyslexic';
    src: url('https://cdn.jsdelivr.net/npm/open-dyslexic@1.0.3/fonts/OpenDyslexic-Regular.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/npm/open-dyslexic@1.0.3/fonts/OpenDyslexic-Regular.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'OpenDyslexic';
    src: url('https://cdn.jsdelivr.net/npm/open-dyslexic@1.0.3/fonts/OpenDyslexic-Bold.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/npm/open-dyslexic@1.0.3/fonts/OpenDyslexic-Bold.woff') format('woff');
    font-weight: bold;
    font-style: normal;
    font-display: swap;
}

[data-dyslexia-mode="true"] {
    --font-body: 'OpenDyslexic', 'Comic Sans MS', 'Arial', sans-serif;
    --font-heading: 'OpenDyslexic', 'Comic Sans MS', 'Arial', sans-serif;
}

[data-dyslexia-mode="true"] body,
[data-dyslexia-mode="true"] p,
[data-dyslexia-mode="true"] li,
[data-dyslexia-mode="true"] span,
[data-dyslexia-mode="true"] div,
[data-dyslexia-mode="true"] input,
[data-dyslexia-mode="true"] textarea,
[data-dyslexia-mode="true"] select,
[data-dyslexia-mode="true"] button {
    font-family: var(--font-body);
    letter-spacing: 0.12em;
    word-spacing: 0.16em;
    line-height: 1.8;
}

[data-dyslexia-mode="true"] h1,
[data-dyslexia-mode="true"] h2,
[data-dyslexia-mode="true"] h3,
[data-dyslexia-mode="true"] h4,
[data-dyslexia-mode="true"] h5,
[data-dyslexia-mode="true"] h6 {
    font-family: var(--font-heading);
    letter-spacing: 0.08em;
    word-spacing: 0.12em;
}

[data-dyslexia-mode="true"] p,
[data-dyslexia-mode="true"] li {
    max-width: 70ch;
}

/* Increased paragraph spacing */
[data-dyslexia-mode="true"] p + p {
    margin-top: 1.5em;
}

/* ============================================
   READING LINE GUIDE
   ============================================ */
.reading-guide-line {
    position: fixed;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent);
    pointer-events: none;
    z-index: 9999;
    opacity: 0.6;
    display: none;
    box-shadow: 0 0 10px var(--accent);
}

[data-reading-guide="true"] .reading-guide-line {
    display: block;
}

/* ============================================
   REDUCE MOTION
   ============================================ */
@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;
    }
}

[data-reduce-motion="true"] *,
[data-reduce-motion="true"] *::before,
[data-reduce-motion="true"] *::after {
    animation: none !important;
    transition-duration: 0ms !important;
    transition: none !important;
}

[data-reduce-motion="true"] .modal-content {
    animation: none !important;
}

[data-reduce-motion="true"] .notification {
    animation: none !important;
}

[data-reduce-motion="true"] .theme-option:hover {
    transform: none !important;
}

/* ============================================
   LARGE TEXT MODE
   ============================================ */
[data-large-text="true"] {
    font-size: 125%;
}

[data-large-text="true"] .sidebar {
    width: 320px;
}

[data-large-text="true"] .form-input,
[data-large-text="true"] .form-select,
[data-large-text="true"] .form-textarea {
    padding: 1rem;
    font-size: 1.1rem;
}

[data-large-text="true"] .btn {
    padding: 0.875rem 1.5rem;
    font-size: 1.1rem;
}

[data-large-text="true"] .card-title {
    font-size: 1.5rem;
}

/* ============================================
   SCREEN READER ONLY
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

/* ============================================
   ARIA LIVE REGIONS
   ============================================ */
[aria-live="polite"],
[aria-live="assertive"] {
    position: relative;
}

/* ============================================
   ACCESSIBLE COLOR HELPERS
   ============================================ */
.text-success { color: #047857; }
.text-warning { color: #B45309; }
.text-danger { color: #B91C1C; }
.text-info { color: #0369A1; }

[data-theme-mode="dark"] .text-success { color: #34D399; }
[data-theme-mode="dark"] .text-warning { color: #FBBF24; }
[data-theme-mode="dark"] .text-danger { color: #F87171; }
[data-theme-mode="dark"] .text-info { color: #38BDF8; }

/* ============================================
   ACCESSIBILITY SETTINGS PANEL STYLES
   ============================================ */
.accessibility-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

.accessibility-toggle:hover {
    background: var(--background);
}

.accessibility-toggle:focus-within {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.accessibility-toggle-info {
    flex: 1;
}

.accessibility-toggle-label {
    font-weight: 600;
    color: var(--primary-navy);
    display: block;
    margin-bottom: 0.25rem;
}

.accessibility-toggle-description {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 52px;
    height: 28px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: 0.3s;
    border-radius: 28px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--accent);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.toggle-switch input:focus-visible + .toggle-slider {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

[data-reduce-motion="true"] .toggle-slider,
[data-reduce-motion="true"] .toggle-slider:before {
    transition: none;
}