/* =========================================
   Accessibility Settings (WCAG AAA)
   ========================================= */

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    right: 50%;
    transform: translateX(50%);
    background-color: var(--accent-color, #f37748);
    color: #ffffff !important;
    padding: 12px 24px;
    z-index: 99999;
    border-radius: 0 0 8px 8px;
    font-weight: bold;
    text-decoration: none;
    transition: top 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.skip-link:focus {
    top: 0;
    outline: 3px solid var(--highlight, #88DDFB) !important;
    outline-offset: 2px;
}

/* Base Focus Outline for Keyboard Users (Tabs) */
*:focus-visible {
    outline: 3px solid var(--accent-color, #f37748) !important;
    outline-offset: 3px !important;
    box-shadow: 0 0 12px rgba(243, 119, 72, 0.85) !important;
}

/* Enhanced Keyboard Focus Visualizer */
.accessibility-focus-highlight *:focus,
.accessibility-focus-highlight *:focus-visible {
    outline: 4px dashed var(--accent-color, #f37748) !important;
    outline-offset: 4px !important;
    box-shadow: 0 0 15px rgba(243, 119, 72, 0.95) !important;
}


/* Base Accessibility Button & Panel */
.accessibility-widget {
    position: fixed;
    bottom: 25px;
    left: 25px;
    z-index: 10000;
    font-family: 'Open Sans', sans-serif;
    direction: rtl;
    transition: bottom 0.1s ease-out;
}

.accessibility-trigger {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--secondary-blue, #61b7c6);
    color: #ffffff;
    border: 2px solid #ffffff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.accessibility-trigger:hover,
.accessibility-trigger:focus {
    transform: scale(1.1);
    background-color: var(--accent-color, #f37748);
}

.accessibility-trigger i {
    font-size: 28px;
}

/* Accessibility Panel Container (Glassmorphic) */
.accessibility-panel {
    display: none;
    position: absolute;
    bottom: 70px;
    left: 0;
    width: 320px;
    background: rgba(12, 0, 59, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    color: #ffffff;
    animation: slideUp 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.accessibility-panel.open {
    display: block;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.accessibility-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

.accessibility-panel-header h4 {
    margin: 0;
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--highlight, #88DDFB);
}

.accessibility-close-btn {
    background: none;
    border: none;
    color: #ffffff;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0 5px;
    opacity: 0.8;
}

.accessibility-close-btn:hover {
    opacity: 1;
}

.accessibility-option {
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accessibility-option-label {
    font-size: 0.95rem;
    font-weight: 600;
}

/* Switch Styling */
.accessibility-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

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

.accessibility-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.2);
    transition: .3s;
    border-radius: 34px;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.accessibility-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .accessibility-slider {
    background-color: var(--secondary-blue, #61b7c6);
}

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

/* Font Size Control Buttons */
.font-size-buttons {
    display: flex;
    gap: 8px;
}

.font-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s ease;
}

.font-btn.active, .font-btn:hover {
    background-color: var(--secondary-blue, #61b7c6);
    border-color: #ffffff;
}

/* Reset Button */
.accessibility-reset-btn {
    width: 100%;
    background-color: var(--accent-color, #f37748);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 10px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 10px;
}

.accessibility-reset-btn:hover {
    background-color: #d1562b;
}

/* =========================================
   Accessibility Settings Classes
   ========================================= */

/* Font Size Scaling */
html.accessibility-font-size-large {
    font-size: 115% !important;
}
html.accessibility-font-size-xlarge {
    font-size: 130% !important;
}

html.accessibility-font-size-large body {
    font-size: 23px !important;
}
html.accessibility-font-size-xlarge body {
    font-size: 26px !important;
}

/* Legible Font Force */
.accessibility-readable-font * {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif !important;
    letter-spacing: normal !important;
}

/* Underline All Links */
.accessibility-underline-links a {
    text-decoration: underline !important;
}

/* High Contrast Mode CSS Overrides */
.accessibility-high-contrast {
    background-color: #000000 !important;
    background-image: none !important;
    color: #FFFFFF !important;
}

.accessibility-high-contrast body,
.accessibility-high-contrast .main-container,
.accessibility-high-contrast main,
.accessibility-high-contrast header,
.accessibility-high-contrast footer,
.accessibility-high-contrast .offcanvas,
.accessibility-high-contrast .modal-content {
    background-color: #000000 !important;
    background-image: none !important;
    color: #FFFFFF !important;
    border-color: #FFFFFF !important;
}

.accessibility-high-contrast p,
.accessibility-high-contrast li,
.accessibility-high-contrast span,
.accessibility-high-contrast div,
.accessibility-high-contrast h1,
.accessibility-high-contrast h2,
.accessibility-high-contrast h3,
.accessibility-high-contrast h4,
.accessibility-high-contrast h5,
.accessibility-high-contrast h6,
.accessibility-high-contrast td,
.accessibility-high-contrast th,
.accessibility-high-contrast label,
.accessibility-high-contrast i {
    color: #FFFFFF !important;
}

/* Links & Interactive elements in High Contrast */
.accessibility-high-contrast a,
.accessibility-high-contrast .nav-link,
.accessibility-high-contrast .dropdown-item {
    color: #88DDFB !important;
    text-decoration: underline !important;
}

.accessibility-high-contrast a:hover,
.accessibility-high-contrast a:focus {
    color: #FFFF00 !important;
    background-color: #333333 !important;
}

/* Accordions and interactive cards in High Contrast */
.accessibility-high-contrast .animated-card,
.accessibility-high-contrast .unit-box,
.accessibility-high-contrast .feature-card,
.accessibility-high-contrast .hint-box,
.accessibility-high-contrast .drop-zone,
.accessibility-high-contrast .flip-card-front,
.accessibility-high-contrast .flip-card-back,
.accessibility-high-contrast .desktop-sidebar-card {
    background-color: #000000 !important;
    background-image: none !important;
    border: 2px solid #FFFFFF !important;
    color: #FFFFFF !important;
    box-shadow: none !important;
}

.accessibility-high-contrast .flip-card-header {
    background-color: #000000 !important;
    background-image: none !important;
    color: #FFFFFF !important;
    border-bottom: 2px solid #FFFFFF !important;
}

.accessibility-high-contrast .flip-card-back-text::-webkit-scrollbar-track {
    background: #000000 !important;
}

.accessibility-high-contrast .flip-card-back-text::-webkit-scrollbar-thumb {
    background-color: #FFFFFF !important;
    border: 1px solid #000000 !important;
}


.accessibility-high-contrast .goal-plus::before,
.accessibility-high-contrast .goal-plus::after {
    background-color: #FFFFFF !important;
}

/* SVG icons visibility in high contrast */
.accessibility-high-contrast svg,
.accessibility-high-contrast svg * {
    stroke: #FFFFFF !important;
    fill: none !important;
}

/* Buttons in High Contrast */
.accessibility-high-contrast button,
.accessibility-high-contrast .btn,
.accessibility-high-contrast .submit-btn,
.accessibility-high-contrast .btn-finish-unit {
    background-color: #000000 !important;
    color: #FFFF00 !important;
    border: 2px solid #FFFF00 !important;
    background-image: none !important;
}

.accessibility-high-contrast button:hover,
.accessibility-high-contrast .btn:hover,
.accessibility-high-contrast button:focus,
.accessibility-high-contrast .btn:focus {
    background-color: #FFFF00 !important;
    color: #000000 !important;
}

.accessibility-high-contrast button:disabled,
.accessibility-high-contrast .btn:disabled {
    border-color: #666666 !important;
    color: #666666 !important;
    background-color: #222222 !important;
}

.accessibility-high-contrast .badge {
    background-color: #000000 !important;
    color: #FFFFFF !important;
    border: 1px solid #FFFFFF !important;
}

.accessibility-high-contrast .contact-section {
    background-color: #000000 !important;
    border-top: 2px solid #FFFFFF !important;
}

/* Vector backgrounds hidden in high contrast */
.accessibility-high-contrast .vector-bg-top,
.accessibility-high-contrast .vector-bg-bottom {
    display: none !important;
}

/* Fix text input readability in High Contrast */
.accessibility-high-contrast input[type="text"],
.accessibility-high-contrast textarea {
    background-color: #000000 !important;
    color: #FFFFFF !important;
    border: 2px solid #FFFFFF !important;
}

/* Enforce mobile touch target sizing (at least 48px height/width) inside the accessibility widget */
@media (max-width: 768px) {
    .accessibility-panel .font-btn {
        min-height: 48px !important;
        min-width: 48px !important;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .accessibility-panel .accessibility-reset-btn {
        min-height: 48px !important;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .accessibility-panel .accessibility-close-btn {
        min-height: 48px !important;
        min-width: 48px !important;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

/* =========================================
   Proportional Scaling for Headings and Fixed/Clamp Font Sizes
   ========================================= */

/* Large Font Size (+15%) Overrides */
html.accessibility-font-size-large h1,
html.accessibility-font-size-large .h1,
html.accessibility-font-size-large .exercise-title {
    font-size: clamp(92px, 13.8vw, 179.4px) !important;
    line-height: clamp(73.6px, 11.5vw, 143.5px) !important;
}

html.accessibility-font-size-large h2,
html.accessibility-font-size-large .h2,
html.accessibility-font-size-large .section-title {
    font-size: clamp(55.2px, 6.9vw, 92px) !important;
}

html.accessibility-font-size-large .section-title-desktop {
    font-size: clamp(3.22rem, 4.37vw, 4.6rem) !important;
}

html.accessibility-font-size-large .edut-word {
    font-size: clamp(92px, 13.8vw, 179.4px) !important;
    line-height: clamp(73.6px, 11.5vw, 143.5px) !important;
}

html.accessibility-font-size-large .number-word {
    font-size: clamp(80.5px, 12.65vw, 158.7px) !important;
    line-height: clamp(80.5px, 12.65vw, 156.5px) !important;
}

/* Extra Large Font Size (+30%) Overrides */
html.accessibility-font-size-xlarge h1,
html.accessibility-font-size-xlarge .h1,
html.accessibility-font-size-xlarge .exercise-title {
    font-size: clamp(104px, 15.6vw, 202.8px) !important;
    line-height: clamp(83.2px, 13vw, 162.2px) !important;
}

html.accessibility-font-size-xlarge h2,
html.accessibility-font-size-xlarge .h2,
html.accessibility-font-size-xlarge .section-title {
    font-size: clamp(62.4px, 7.8vw, 104px) !important;
}

html.accessibility-font-size-xlarge .section-title-desktop {
    font-size: clamp(3.64rem, 4.94vw, 5.2rem) !important;
}

html.accessibility-font-size-xlarge .edut-word {
    font-size: clamp(104px, 15.6vw, 202.8px) !important;
    line-height: clamp(83.2px, 13vw, 162.2px) !important;
}

html.accessibility-font-size-xlarge .number-word {
    font-size: clamp(91px, 14.3vw, 179.4px) !important;
    line-height: clamp(91px, 14.3vw, 176.9px) !important;
}

/* Subheadings and small text overrides for Large Font Size (+15%) */
html.accessibility-font-size-large h4,
html.accessibility-font-size-large h5,
html.accessibility-font-size-large h6,
html.accessibility-font-size-large .h4,
html.accessibility-font-size-large .h5,
html.accessibility-font-size-large .h6,
html.accessibility-font-size-large .card-title,
html.accessibility-font-size-large .subtitle,
html.accessibility-font-size-large .fs-5 {
    font-size: 23px !important;
}

html.accessibility-font-size-large small,
html.accessibility-font-size-large .small,
html.accessibility-font-size-large .fs-6 {
    font-size: 21px !important;
}

/* Subheadings and small text overrides for Extra Large Font Size (+30%) */
html.accessibility-font-size-xlarge h4,
html.accessibility-font-size-xlarge h5,
html.accessibility-font-size-xlarge h6,
html.accessibility-font-size-xlarge .h4,
html.accessibility-font-size-xlarge .h5,
html.accessibility-font-size-xlarge .h6,
html.accessibility-font-size-xlarge .card-title,
html.accessibility-font-size-xlarge .subtitle,
html.accessibility-font-size-xlarge .fs-5 {
    font-size: 26px !important;
}

html.accessibility-font-size-xlarge small,
html.accessibility-font-size-xlarge .small,
html.accessibility-font-size-xlarge .fs-6 {
    font-size: 23px !important;
}