/* 
   iView Learning - Enhanced Accessibility Styles
   WCAG 2.1 Compliant Styling
*/

/* --- 1. Focus Indicators (WCAG 2.4.7) --- */
/* Ensure focus is always visible for keyboard navigation */
:focus-visible {
    outline: 3px solid #6366F1 !important;
    outline-offset: 2px !important;
    box-shadow: 0 0 0 5px rgba(99, 102, 241, 0.3) !important;
    z-index: 9999;
}

/* Fallback for older browsers */
:focus {
    outline: 3px solid #6366F1;
    outline-offset: 2px;
}

/* Remove default focus for mouse users if :focus-visible is supported */
:focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
}

/* Specific focus states for dark backgrounds */
.dark-mode :focus-visible {
    outline-color: #A5B4FC !important;
    box-shadow: 0 0 0 5px rgba(165, 180, 252, 0.3) !important;
}

/* --- 2. Screen Reader Only Utility (WCAG 1.3.1) --- */
.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;
}

/* --- 3. Skip Links (WCAG 2.4.1) --- */
.skip-link {
    position: absolute;
    top: -9999px;
    left: 50%;
    transform: translateX(-50%);
    background: #6366F1;
    color: white !important;
    padding: 10px 20px;
    z-index: 99999;
    font-weight: bold;
    border-radius: 0 0 8px 8px;
    text-decoration: none;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid white !important;
}

/* --- 4. High Contrast Mode (WCAG 1.4.3 / 1.4.6) --- */
body.high-contrast {
    background-color: #000000 !important;
    color: #FFFFFF !important;
}

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

body.high-contrast a {
    color: #FFFF00 !important;
    text-decoration: underline !important;
}

body.high-contrast button, 
body.high-contrast .btn {
    background-color: #000000 !important;
    color: #FFFF00 !important;
    border: 2px solid #FFFF00 !important;
    box-shadow: none !important;
}

body.high-contrast .card,
body.high-contrast .iq-card {
    background-color: #000000 !important;
    border: 2px solid #FFFFFF !important;
}

body.high-contrast input,
body.high-contrast select, 
body.high-contrast textarea {
    background-color: #000000 !important;
    color: #FFFFFF !important;
    border: 2px solid #FFFFFF !important;
}

/* Disable gradients/shadows in high contrast */
body.high-contrast * {
    box-shadow: none !important;
    text-shadow: none !important;
    background-image: none !important;
}

/* --- 5. Simplified View (Cognitive Accessibility) --- */
body.simplified-mode .iq-sidebar {
    width: 64px !important;
    overflow: visible !important;
}
/* Centre-align links to show only the icon (text/arrows hidden via JS) */
body.simplified-mode .iq-sidebar-menu .iq-menu li > a {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 10px 0 !important;
    border-radius: 8px !important;
}
body.simplified-mode .iq-sidebar-menu .iq-menu li > a > i:first-child {
    font-size: 20px !important;
    margin: 0 !important;
}
body.simplified-mode .navbar-breadcrumb,
body.simplified-mode .iq-footer {
    display: none !important;
}
body.simplified-mode img:not(.logo-img) {
    display: none !important;
}
body.simplified-mode .card-body {
    padding: 40px !important;
}
/* Stack sidebar-footer icons vertically in simplified mode */
body.simplified-mode .sidebar-footer .d-flex {
    flex-direction: column !important;
    align-items: center !important;
    gap: 6px !important;
}
body.simplified-mode .sidebar-footer {
    padding: 8px 0 !important;
}

/* --- 6. Large Text Mode --- */
body.larger-text {
    font-size: 130% !important;
}
body.larger-text h1 { font-size: 2.5rem !important; }
body.larger-text h2 { font-size: 2.2rem !important; }
body.larger-text h3 { font-size: 1.8rem !important; }
body.larger-text p { font-size: 1.3rem !important; line-height: 1.8 !important; }

/* --- 7. Dyslexia Friendly Font --- */
body.dyslexia-friendly {
    font-family: 'OpenDyslexic', 'Comic Sans MS', sans-serif !important;
    line-height: 1.8 !important;
    word-spacing: 0.2rem !important;
    letter-spacing: 0.05rem !important;
}

/* --- 8. Glass Mode Accessibility Fixes --- */
/* Ensure text contrast on glass backgrounds */
.glass-mode .card,
.glass-mode .iq-card {
    background: rgba(255, 255, 255, 0.85) !important; /* Slightly more opaque for readability */
    backdrop-filter: blur(12px) !important;
}

.glass-mode.dark-mode .card,
.glass-mode.dark-mode .iq-card {
    background: rgba(30, 30, 30, 0.85) !important;
}

/* --- 9. Accessibility Panel Styling --- */
#accessibility-panel {
    position: fixed;
    top: 60px;
    right: 20px;
    width: 680px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    z-index: 10000;
    padding: 16px;
    transform: translateY(-20px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 92vh;
    overflow-y: auto;
    border: 1px solid rgba(0,0,0,0.1);
}

#accessibility-panel.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

/* Dark mode support for panel */
body.dark-mode #accessibility-panel {
    background: #1e1e1e;
    border-color: #333;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    color: #e0e0e0;
}

.close-panel {
    background: none;
    border: none;
    font-size: 0.7rem;
    cursor: pointer;
    color: #64748B;
    padding: 2px;
    border-radius: 50%;
    transition: background 0.2s;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.close-panel:hover {
    background-color: #F1F5F9;
    color: #0F172A;
}

.close-panel:focus {
    outline: 2px solid #6366F1;
}

h2#accessibility-title {
    font-size: 1rem;
    margin-bottom: 0;
    font-weight: 700;
    color: #0F172A;
    padding-bottom: 0;
    border-bottom: none;
}

body.dark-mode h2#accessibility-title {
    color: #fff;
    border-bottom-color: #333;
}

.accessibility-section {
    margin-bottom: 10px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 6px;
    align-items: start;
}

.accessibility-section h4 {
    grid-column: 1 / -1;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748B;
    margin-bottom: 4px;
    font-weight: 600;
}

body.dark-mode .accessibility-section h4 {
    color: #94a3b8;
}

.accessibility-option {
    margin-bottom: 0;
}

#accessibility-panel .acc-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px;
    font-size: 0.75rem;
    gap: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border: 1px solid #e2e8f0 !important;
    border-radius: 6px !important;
    background: transparent !important;
    color: #374151 !important;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

#accessibility-panel .acc-toggle.active {
    background: var(--primary-soft, #EEF2FF) !important;
    border-color: var(--primary-color, #6366F1) !important;
    color: var(--primary-color, #6366F1) !important;
}

#accessibility-panel .acc-toggle.active span:first-child {
    color: var(--primary-color, #6366F1) !important;
}

#accessibility-panel .acc-toggle span:first-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

#accessibility-panel .acc-toggle .status-indicator {
    flex-shrink: 0;
    font-size: 0.65rem;
}

/* Ensure Keyboard Shortcuts info spans full width */
.keyboard-shortcuts {
    grid-column: 1 / -1;
}

/* Reset button container */
#reset-acc {
    grid-column: 1 / -1;
    background: transparent;
    border: 1px dashed #94A3B8;
    color: #64748B;
    padding: 6px;
    font-size: 0.75rem;
}

#reset-acc:hover {
    background: #F1F5F9;
    color: #0F172A;
    border-color: #64748B;
}

/* Cursor colour options row */
#cursor-color-options {
    grid-column: 1 / -1;
}

/* Footer note */
#accessibility-panel .text-center.mt-4 {
    margin-top: 8px !important;
    font-size: 10px !important;
}

/* Reduced Motion preference */
@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;
    }
}

/* --- 10. Floating Accessibility Trigger --- */
/* (Removed as user wants it in sidebar) */
/*
#accessibility-trigger-btn {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 9999;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #4F46E5;
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

#accessibility-trigger-btn:hover {
    transform: scale(1.1);
    background: #4338CA;
}

#accessibility-trigger-btn:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

body.high-contrast #accessibility-trigger-btn {
    background: #000000;
    border: 2px solid #FFFFFF;
    color: #FFFFFF;
}
*/