/* Dark Mode CSS */
:root {
    --text-size-factor: 1;
    --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --line-spacing: 1.5;
    
    /* Light mode colors */
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    
    /* Transition settings */
    --transition-speed: 0.3s;
}

/* Apply font size scaling to all text elements */
body {
    font-size: calc(1rem * var(--text-size-factor));
    font-family: var(--font-family);
    line-height: var(--line-spacing);
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* Dark mode colors */
body.dark-mode {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --text-muted: #adb5bd;
    --border-color: #343a40;
    --primary-color: #3d8bfd;
    --secondary-color: #adb5bd;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #343a40;
    --dark-color: #f8f9fa;
}

/* High contrast mode */
body.high-contrast {
    --text-color: #ffffff;
    --bg-color: #000000;
    --card-bg: #121212;
    --text-muted: #ffffff;
    --border-color: #ffffff;
    --primary-color: #ffff00;
    --secondary-color: #ffffff;
    --success-color: #00ff00;
    --info-color: #00ffff;
    --warning-color: #ffff00;
    --danger-color: #ff0000;
}

/* Apply dark mode to common elements */
.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.card-header, .card-footer {
    background-color: rgba(0, 0, 0, 0.05);
    border-color: var(--border-color);
}

body.dark-mode .card-header, body.dark-mode .card-footer {
    background-color: rgba(255, 255, 255, 0.05);
}

.table {
    color: var(--text-color);
    border-color: var(--border-color);
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.075);
}

body.dark-mode .table-hover tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.075);
}

.modal-content {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

.modal-header, .modal-footer {
    border-color: var(--border-color);
}

/* Ensure modals work correctly */
.modal {
    display: none;
}

.modal.show {
    display: block;
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
}

body.modal-open {
    overflow: hidden;
}

.form-control, .form-select {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.form-control:focus, .form-select:focus {
    background-color: var(--card-bg);
    color: var(--text-color);
}

.input-group-text {
    background-color: var(--light-color);
    border-color: var(--border-color);
    color: var(--text-color);
}

.dropdown-menu {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

.dropdown-item {
    color: var(--text-color);
}

.dropdown-item:hover, .dropdown-item:focus {
    background-color: rgba(0, 0, 0, 0.075);
}

body.dark-mode .dropdown-item:hover, body.dark-mode .dropdown-item:focus {
    background-color: rgba(255, 255, 255, 0.075);
}

.list-group-item {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

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

.border {
    border-color: var(--border-color) !important;
}

/* Reduced motion */
body.reduced-motion * {
    transition: none !important;
    animation: none !important;
}

body.reduced-motion .fade-in {
    opacity: 1 !important;
    animation: none !important;
}

/* Enhanced screen reader support */
body.enhanced-a11y .sr-only-enhanced {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body.enhanced-a11y .btn:focus,
body.enhanced-a11y .form-control:focus,
body.enhanced-a11y .form-select:focus,
body.enhanced-a11y a:focus {
    outline: 3px solid var(--primary-color) !important;
    outline-offset: 2px !important;
}

/* Focus indicators for keyboard navigation */
body:not(.using-mouse) *:focus {
    outline: 3px solid var(--primary-color) !important;
    outline-offset: 2px !important;
}

/* Keyboard shortcuts helper */
.keyboard-shortcuts-helper {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1050;
    max-width: 300px;
}

body.dark-mode .keyboard-shortcuts-helper {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* Accessibility button */
.accessibility-toggle {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1050;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s;
}

.accessibility-toggle:hover {
    background-color: #0b5ed7;
}

body.dark-mode .accessibility-toggle {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* OpenDyslexic font */
@font-face {
    font-family: 'OpenDyslexic';
    src: url('https://cdn.jsdelivr.net/npm/open-dyslexic@1.0.3/open-dyslexic-regular.woff') format('woff');
    font-weight: normal;
    font-style: normal;
}

/* Apply dyslexia font when class is added */
body.dyslexia-font {
    font-family: 'OpenDyslexic', var(--font-family);
}

body.dyslexia-font h1, 
body.dyslexia-font h2, 
body.dyslexia-font h3, 
body.dyslexia-font h4, 
body.dyslexia-font h5, 
body.dyslexia-font h6,
body.dyslexia-font .h1, 
body.dyslexia-font .h2, 
body.dyslexia-font .h3, 
body.dyslexia-font .h4, 
body.dyslexia-font .h5, 
body.dyslexia-font .h6,
body.dyslexia-font .nav-link,
body.dyslexia-font .btn {
    font-family: 'OpenDyslexic', var(--font-family);
}

/* Keyboard shortcut styling */
kbd {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
    color: var(--text-color);
    display: inline-block;
    font-size: 0.85em;
    font-weight: 700;
    line-height: 1;
    padding: 2px 4px;
    white-space: nowrap;
}

body.dark-mode kbd {
    box-shadow: 0 1px 1px rgba(255, 255, 255, 0.2);
}

/* Print styles */
@media print {
    body {
        background-color: white !important;
        color: black !important;
    }
    
    .card, .modal-content, .list-group-item {
        background-color: white !important;
        border-color: #ddd !important;
    }
    
    .no-print {
        display: none !important;
    }
}