/* Accessibility Mode - High Contrast and Screen Reader Optimizations */

/* High contrast color scheme */
.accessibility-mode {
    --bg-primary: #000000;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --border: #4a4a4a;
    --link: #00ccff;
    --link-hover: #66d9ff;
    --success: #00ff00;
    --warning: #ffff00;
    --error: #ff0000;
    --focus: #00ccff;
}

/* Apply high contrast when accessibility mode is active */
.accessibility-mode body {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    font-size: 18px !important;
    line-height: 1.8 !important;
}

.accessibility-mode .navbar {
    background-color: var(--bg-secondary) !important;
    border-bottom: 2px solid var(--border) !important;
    box-shadow: none !important;
}

.accessibility-mode .navbar-brand {
    color: var(--text-primary) !important;
    font-weight: bold !important;
}

.accessibility-mode .navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    border: 1px solid transparent;
    border-radius: 4px;
    padding: 8px 12px !important;
    margin: 0 2px;
}

.accessibility-mode .navbar-nav .nav-link:hover,
.accessibility-mode .navbar-nav .nav-link:focus {
    color: var(--text-primary) !important;
    background-color: var(--bg-tertiary) !important;
    border-color: var(--focus) !important;
    outline: 2px solid var(--focus) !important;
    outline-offset: 2px;
}

.accessibility-mode .card {
    background-color: var(--bg-secondary) !important;
    border: 2px solid var(--border) !important;
    border-radius: 8px !important;
    box-shadow: none !important;
}

.accessibility-mode .card-header {
    background-color: var(--bg-tertiary) !important;
    border-bottom: 2px solid var(--border) !important;
    color: var(--text-primary) !important;
}

.accessibility-mode .card-body {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

.accessibility-mode h1, 
.accessibility-mode h2, 
.accessibility-mode h3, 
.accessibility-mode h4, 
.accessibility-mode h5, 
.accessibility-mode h6 {
    color: var(--text-primary) !important;
    font-weight: bold !important;
    margin-bottom: 1rem !important;
}

.accessibility-mode p,
.accessibility-mode li {
    color: var(--text-primary) !important;
    font-size: 18px !important;
    line-height: 1.8 !important;
}

.accessibility-mode .text-muted {
    color: var(--text-secondary) !important;
}

.accessibility-mode .text-primary {
    color: var(--link) !important;
}

/* Form elements */
.accessibility-mode .form-control,
.accessibility-mode .form-select {
    background-color: var(--bg-tertiary) !important;
    border: 2px solid var(--border) !important;
    color: var(--text-primary) !important;
    font-size: 18px !important;
    padding: 12px !important;
    border-radius: 4px !important;
}

.accessibility-mode .form-control:focus,
.accessibility-mode .form-select:focus {
    background-color: var(--bg-tertiary) !important;
    border-color: var(--focus) !important;
    outline: 2px solid var(--focus) !important;
    outline-offset: 2px;
    box-shadow: none !important;
}

.accessibility-mode .form-label {
    color: var(--text-primary) !important;
    font-weight: bold !important;
    font-size: 18px !important;
    margin-bottom: 8px !important;
}

/* Buttons */
.accessibility-mode .btn {
    font-size: 18px !important;
    padding: 12px 24px !important;
    border-radius: 4px !important;
    font-weight: bold !important;
    border: 2px solid !important;
    transition: all 0.2s ease;
}

.accessibility-mode .btn-primary {
    background-color: var(--link) !important;
    color: var(--bg-primary) !important;
    border-color: var(--link) !important;
}

.accessibility-mode .btn-primary:hover,
.accessibility-mode .btn-primary:focus {
    background-color: var(--link-hover) !important;
    color: var(--bg-primary) !important;
    border-color: var(--link-hover) !important;
    outline: 2px solid var(--focus) !important;
    outline-offset: 2px;
}

.accessibility-mode .btn-outline-primary {
    background-color: transparent !important;
    color: var(--link) !important;
    border-color: var(--link) !important;
}

.accessibility-mode .btn-outline-primary:hover,
.accessibility-mode .btn-outline-primary:focus {
    background-color: var(--link) !important;
    color: var(--bg-primary) !important;
    border-color: var(--link) !important;
    outline: 2px solid var(--focus) !important;
    outline-offset: 2px;
}

.accessibility-mode .btn-outline-secondary {
    background-color: transparent !important;
    color: var(--text-secondary) !important;
    border-color: var(--text-secondary) !important;
}

.accessibility-mode .btn-outline-secondary:hover,
.accessibility-mode .btn-outline-secondary:focus {
    background-color: var(--text-secondary) !important;
    color: var(--bg-primary) !important;
    border-color: var(--text-secondary) !important;
    outline: 2px solid var(--focus) !important;
    outline-offset: 2px;
}

/* Links */
.accessibility-mode a {
    color: var(--link) !important;
    text-decoration: underline !important;
    font-weight: bold !important;
}

.accessibility-mode a:hover,
.accessibility-mode a:focus {
    color: var(--link-hover) !important;
    outline: 2px solid var(--focus) !important;
    outline-offset: 2px;
}

/* Tables */
.accessibility-mode .table {
    background-color: var(--bg-secondary) !important;
    border: 2px solid var(--border) !important;
}

.accessibility-mode .table th {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border-bottom: 2px solid var(--border) !important;
    font-weight: bold !important;
    font-size: 18px !important;
}

.accessibility-mode .table td {
    color: var(--text-primary) !important;
    border-bottom: 1px solid var(--border) !important;
    font-size: 18px !important;
}

/* Alerts */
.accessibility-mode .alert {
    border: 2px solid !important;
    border-radius: 4px !important;
    font-size: 18px !important;
    font-weight: bold !important;
    padding: 16px !important;
}

.accessibility-mode .alert-success {
    background-color: var(--bg-tertiary) !important;
    color: var(--success) !important;
    border-color: var(--success) !important;
}

.accessibility-mode .alert-warning {
    background-color: var(--bg-tertiary) !important;
    color: var(--warning) !important;
    border-color: var(--warning) !important;
}

.accessibility-mode .alert-danger {
    background-color: var(--bg-tertiary) !important;
    color: var(--error) !important;
    border-color: var(--error) !important;
}

/* Skip links */
.skip-link {
    position: absolute;
    top: -40px;
    left: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    font-weight: bold;
}

.skip-link:focus {
    top: 8px;
    outline: 2px solid var(--focus);
    outline-offset: 2px;
}

.accessibility-mode .skip-link {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--focus);
}

.accessibility-mode .skip-link:focus {
    background-color: var(--focus);
    color: var(--bg-primary);
}

/* Focus indicators */
.accessibility-mode *:focus {
    outline: 2px solid var(--focus) !important;
    outline-offset: 2px !important;
}

/* Accessibility toggle button */
.accessibility-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: #2980b9;
    color: white;
    border: none;
    padding: 12px 16px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.2s ease;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.accessibility-toggle:hover,
.accessibility-toggle:focus {
    background-color: #3498db;
    transform: scale(1.1);
    outline: 2px solid #00ccff;
    outline-offset: 2px;
}

.accessibility-mode .accessibility-toggle {
    background-color: var(--link);
    color: var(--bg-primary);
}

.accessibility-mode .accessibility-toggle:hover,
.accessibility-mode .accessibility-toggle:focus {
    background-color: var(--link-hover);
    color: var(--bg-primary);
}

/* Screen reader only content */
.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;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .accessibility-mode * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles for accessibility */
@media print {
    .accessibility-mode {
        background: white !important;
        color: black !important;
    }
    
    .accessibility-mode * {
        background: white !important;
        color: black !important;
    }
    
    .accessibility-toggle {
        display: none !important;
    }
}