/* ==========================================================================
   WCAG 2.1 AA/AAA ACCESSIBILITY & ACCESSIBILITY WIDGET STYLES
   ========================================================================== */

/* Accessibility Trigger Button (Bottom-Right Circular Floating Button) */
.a11y-trigger-wrapper {
    position: fixed;
    bottom: 25px;
    right: 25px;
    z-index: 9998;
}

.a11y-trigger-btn.a11y-circle-btn,
.a11y-trigger-btn {
    background: var(--color-primary);
    color: #FFFFFF;
    border: 3px solid #FFFFFF;
    border-radius: 50%;
    width: 56px;
    height: 56px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(29, 53, 87, 0.4);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.a11y-trigger-btn:hover, .a11y-trigger-btn:focus {
    background: var(--color-accent);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 30px rgba(230, 57, 70, 0.5);
    outline: 3px solid var(--color-yellow);
}

.a11y-svg-icon {
    width: 28px;
    height: 28px;
    fill: currentColor;
}

.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;
}

/* Accessibility Drawer / Panel */
.a11y-panel {
    position: fixed;
    top: 0;
    right: 0;
    transform: translateX(100%);
    visibility: hidden;
    pointer-events: none;
    width: 400px;
    max-width: 90vw;
    height: 100vh;
    height: 100dvh;
    background: #FFFFFF;
    box-shadow: -8px 0 32px rgba(15, 23, 42, 0.2);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0.35s ease;
}

.a11y-panel.is-open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
}

.a11y-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(3px);
    z-index: 9999;
    display: none;
}

.a11y-backdrop.is-open {
    display: block;
}

/* Panel Header */
.a11y-panel-header {
    padding: 16px 20px;
    background: var(--color-primary);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 20;
    flex-shrink: 0;
    width: 100%;
    box-sizing: border-box;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.a11y-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex: 1;
}

.a11y-header-icon {
    color: var(--color-yellow);
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
}

.a11y-panel-heading {
    color: #FFFFFF;
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.2;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.a11y-panel-subtitle {
    font-size: 0.78rem;
    color: #CBD5E1;
}

.a11y-close-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
    width: 38px;
    height: 38px;
    min-width: 38px;
    min-height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    transition: all 0.2s ease;
    outline: none;
    box-sizing: border-box;
}

.a11y-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg) scale(1.05);
    border-color: rgba(255, 255, 255, 0.5);
}

.a11y-close-btn:focus-visible {
    outline: 2px solid var(--color-yellow);
    outline-offset: 2px;
}

.a11y-close-btn:focus:not(:focus-visible) {
    outline: none;
}

/* Background Scroll Lock */
html.a11y-drawer-open,
body.a11y-drawer-open {
    overflow: hidden !important;
    touch-action: none;
}

/* Panel Body */
.a11y-panel-body {
    padding: 20px 24px;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.a11y-section {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 20px;
}

.a11y-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.a11y-section-title {
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--color-primary);
}

.a11y-desc {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-bottom: 14px;
}

/* TTS Controls */
.a11y-tts-controls {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 8px;
    margin-bottom: 10px;
}

.a11y-btn {
    border: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    color: var(--color-text);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.a11y-btn:hover, .a11y-btn.active {
    background: var(--color-primary);
    color: #FFFFFF;
    border-color: var(--color-primary);
}

.tts-btn-primary {
    background: var(--color-accent);
    color: #FFFFFF;
    border-color: var(--color-accent);
}

.tts-btn-primary:hover {
    background: var(--color-accent-hover);
}

.tts-btn-secondary {
    background: var(--color-secondary);
    color: #FFFFFF;
    border-color: var(--color-secondary);
}

.tts-btn-danger {
    background: #64748B;
    color: #FFFFFF;
    border-color: #64748B;
}

.tts-status {
    font-size: 0.8rem;
    color: var(--color-teal);
    font-weight: 600;
    padding: 6px 10px;
    background: #E8F8F5;
    border-radius: var(--radius-sm);
}

/* Grid Buttons */
.a11y-grid-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.font-size-btn[data-size="small"] { font-size: 0.75rem; }
.font-size-btn[data-size="normal"] { font-size: 0.85rem; }
.font-size-btn[data-size="large"] { font-size: 1rem; }
.font-size-btn[data-size="xlarge"] { font-size: 1.15rem; }

/* Toggle List */
.a11y-toggle-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.a11y-toggle-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 600;
    transition: var(--transition);
}

.a11y-toggle-item:hover {
    border-color: var(--color-secondary);
}

.a11y-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent);
    cursor: pointer;
}

/* Keyboard Shortcuts */
.a11y-shortcuts-info {
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    padding: 14px;
}

.a11y-keys-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--color-text);
}

kbd {
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
    font-family: monospace;
    color: var(--color-primary);
}

/* Panel Footer */
.a11y-panel-footer {
    padding: 16px 24px;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.a11y-reset-btn {
    background: none;
    border: 1px solid #DC2626;
    color: #DC2626;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
}

.a11y-reset-btn:hover {
    background: #DC2626;
    color: #FFFFFF;
}

.a11y-guide-link {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* ==========================================================================
   LIVE MODES IMPLEMENTATION (FONT SCALING, CONTRAST, DYSLEXIA, MASKS)
   ========================================================================== */

/* 1. Font Size Scaling */
html[data-font-size="small"] { font-size: 14px; }
html[data-font-size="normal"] { font-size: 16px; }
html[data-font-size="large"] { font-size: 18.5px; }
html[data-font-size="xlarge"] { font-size: 21px; }

/* 2. Dyslexia Friendly Mode */
html.dyslexia-font body,
html.dyslexia-font h1,
html.dyslexia-font h2,
html.dyslexia-font h3,
html.dyslexia-font h4,
html.dyslexia-font p,
html.dyslexia-font a,
html.dyslexia-font span,
html.dyslexia-font button,
html.dyslexia-font input {
    font-family: 'Lexend', 'Comic Sans MS', sans-serif !important;
    letter-spacing: 0.08em !important;
    word-spacing: 0.16em !important;
    line-height: 1.85 !important;
}

/* 3. High Contrast Dark Mode */
html[data-contrast="high-dark"] body {
    background-color: #000000 !important;
    color: #FFFFFF !important;
}
html[data-contrast="high-dark"] h1,
html[data-contrast="high-dark"] h2,
html[data-contrast="high-dark"] h3,
html[data-contrast="high-dark"] h4,
html[data-contrast="high-dark"] h5,
html[data-contrast="high-dark"] h6 {
    color: #FFFF00 !important;
}
html[data-contrast="high-dark"] p,
html[data-contrast="high-dark"] span,
html[data-contrast="high-dark"] li {
    color: #FFFFFF !important;
}
html[data-contrast="high-dark"] a {
    color: #00FFFF !important;
    text-decoration: underline !important;
}
html[data-contrast="high-dark"] .site-header,
html[data-contrast="high-dark"] .topbar,
html[data-contrast="high-dark"] .card,
html[data-contrast="high-dark"] .feature-card,
html[data-contrast="high-dark"] .program-card,
html[data-contrast="high-dark"] .quick-bar-grid,
html[data-contrast="high-dark"] .esenyurt-info-card,
html[data-contrast="high-dark"] .contact-form-card,
html[data-contrast="high-dark"] .modal-dialog,
html[data-contrast="high-dark"] .a11y-panel {
    background-color: #121212 !important;
    border: 2px solid #FFFFFF !important;
}
html[data-contrast="high-dark"] .btn-primary {
    background-color: #FFFF00 !important;
    color: #000000 !important;
    font-weight: 800 !important;
}

/* 4. Yellow on Black Contrast Mode */
html[data-contrast="yellow-black"] body {
    background-color: #000000 !important;
    color: #FFFF00 !important;
}
html[data-contrast="yellow-black"] h1,
html[data-contrast="yellow-black"] h2,
html[data-contrast="yellow-black"] h3,
html[data-contrast="yellow-black"] p,
html[data-contrast="yellow-black"] a,
html[data-contrast="yellow-black"] span,
html[data-contrast="yellow-black"] li,
html[data-contrast="yellow-black"] strong {
    color: #FFFF00 !important;
}
html[data-contrast="yellow-black"] .site-header,
html[data-contrast="yellow-black"] .topbar,
html[data-contrast="yellow-black"] .feature-card,
html[data-contrast="yellow-black"] .program-card,
html[data-contrast="yellow-black"] .modal-dialog {
    background-color: #000000 !important;
    border: 2px solid #FFFF00 !important;
}

/* 5. Grayscale & Invert */
html[data-contrast="grayscale"] {
    filter: grayscale(100%);
}
html[data-contrast="invert"] {
    filter: invert(100%) hue-rotate(180deg);
}

/* 6. Highlight Links */
html.highlight-links-mode a {
    text-decoration: underline !important;
    text-decoration-color: #FFB703 !important;
    text-decoration-thickness: 3px !important;
    background-color: rgba(255, 183, 3, 0.15) !important;
    color: #000000 !important;
}

/* 7. Large Cursor */
html.large-cursor-mode, html.large-cursor-mode * {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='36' height='36' viewBox='0 0 24 24' fill='black' stroke='white' stroke-width='1.5'%3E%3Cpath d='M3 3l7 18 3-7 7-3L3 3z'/%3E%3C/svg%3E"), auto !important;
}

/* 8. Stop Animations */
html.stop-animations-mode *,
html.stop-animations-mode *::before,
html.stop-animations-mode *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
}

/* 9. Reading Guide / Line */
.reading-guide-line {
    position: fixed;
    left: 0;
    width: 100%;
    height: 38px;
    background: rgba(255, 235, 59, 0.28);
    border-top: 2px solid #FBC02D;
    border-bottom: 2px solid #FBC02D;
    pointer-events: none;
    z-index: 99999;
    display: none;
    transform: translateY(-50%);
}
html.reading-guide-active .reading-guide-line {
    display: block;
}

/* ==========================================================================
   ACCESSIBILITY PAGE STYLING (.a11y-page)
   ========================================================================== */
.a11y-guide-article {
    max-width: 980px;
    margin: 0 auto;
}

.a11y-intro-card {
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 36px 32px;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 40px;
    border-left: 6px solid var(--color-secondary);
}

.a11y-intro-content {
    flex-grow: 1;
}

.a11y-intro-content h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 10px;
    font-family: var(--font-heading);
}

.a11y-intro-content p {
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1.65;
    margin: 0;
}

.a11y-intro-cta {
    flex-shrink: 0;
}

.page-a11y-open-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--color-accent);
    color: #FFFFFF !important;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 14px 22px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
    transition: var(--transition);
    white-space: nowrap;
}

.page-a11y-open-btn:hover {
    background: #D62839;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
}

.a11y-features-breakdown {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 44px;
}

.a11y-feature-item {
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: flex-start;
    gap: 20px;
    transition: var(--transition);
}

.a11y-feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-secondary);
}

.a11y-icon-box {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: #E8F4F8;
    color: var(--color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.a11y-feature-item h3 {
    font-size: 1.15rem;
    font-family: var(--font-heading);
    color: var(--color-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.a11y-feature-item p {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin: 0;
}

/* A11y Shortcuts Table */
.a11y-shortcuts-table-wrap {
    background: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 36px 32px;
    box-shadow: var(--shadow-card);
    margin-bottom: 44px;
}

.a11y-shortcuts-table-wrap h3 {
    font-size: 1.35rem;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-family: var(--font-heading);
}

.a11y-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.a11y-table th {
    background: var(--color-primary);
    color: #FFFFFF;
    padding: 14px 20px;
    font-size: 0.92rem;
    font-weight: 700;
    text-align: left;
    letter-spacing: 0.3px;
}

.a11y-table td {
    padding: 14px 20px;
    border-top: 1px solid var(--color-border);
    font-size: 0.95rem;
    color: var(--color-text);
}

.a11y-table tr:nth-child(even) td {
    background: #F8FAFC;
}

.a11y-table tr:hover td {
    background: #EFF6FF;
}

.a11y-table kbd {
    background: #0F172A;
    color: #F8FAFC;
    border: 1px solid #334155;
    padding: 4px 10px;
    border-radius: 6px;
    font-family: monospace;
    font-weight: 700;
    font-size: 0.88rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
    display: inline-block;
}

/* Feedback Box */
.a11y-feedback-card {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    color: #FFFFFF;
    box-shadow: var(--shadow-md);
}

.a11y-feedback-card h3 {
    color: #FFFFFF;
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-family: var(--font-heading);
}

.a11y-feedback-card p {
    color: #E2E8F0;
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto 24px;
    line-height: 1.6;
}

@media (max-width: 860px) {
    .a11y-intro-card {
        flex-direction: column;
        align-items: flex-start;
    }
    .a11y-features-breakdown {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .a11y-trigger-wrapper {
        bottom: 74px;
        right: 14px;
        z-index: 9990;
    }
    .a11y-trigger-btn.a11y-circle-btn,
    .a11y-trigger-btn {
        width: 52px;
        height: 52px;
        box-shadow: 0 6px 20px rgba(29, 53, 87, 0.4);
    }
    .a11y-panel {
        width: 100vw;
        max-width: 100vw;
        right: 0 !important;
        transform: translateX(100%) !important;
        height: 100vh;
        height: 100dvh;
    }
    .a11y-panel.is-open {
        transform: translateX(0) !important;
        right: 0 !important;
    }
    .a11y-panel-header {
        padding: 14px 16px;
        width: 100%;
        box-sizing: border-box;
    }
    .a11y-close-btn {
        width: 38px;
        height: 38px;
        min-width: 38px;
        min-height: 38px;
        display: inline-flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        flex-shrink: 0 !important;
    }
    .a11y-panel-body {
        padding: 16px 18px;
    }
    .a11y-grid-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}