/* Custom styles for QRVpro */

/* ==========================================
   THEME VARIABLES - Light Mode (Default)
   ========================================== */
:root {
    /* Brand colors */
    --qrv-brand-primary: #170d26;
    --qrv-brand-secondary: #2d1b4e;
    --qrv-brand-accent: #4a2c7a;
    
    /* Background colors */
    --qrv-bg-body: #ffffff;
    --qrv-bg-secondary: #f8f9fa;
    --qrv-bg-tertiary: #e9ecef;
    --qrv-bg-card: #ffffff;
    --qrv-bg-sidebar: #ffffff;
    --qrv-bg-input: #ffffff;
    
    /* Text colors */
    --qrv-text-primary: #1a1a1a;
    --qrv-text-secondary: #6b6b6b;
    --qrv-text-muted: #6c757d;
    --qrv-text-inverse: #ffffff;
    
    /* Border colors */
    --qrv-border-color: #e6e6e6;
    --qrv-border-light: #dee2e6;
    --qrv-border-input: #e9ecef;
    
    /* Shadow colors */
    --qrv-shadow-sm: rgba(23, 13, 38, 0.1);
    --qrv-shadow-md: rgba(23, 13, 38, 0.15);
    --qrv-shadow-lg: rgba(23, 13, 38, 0.2);
    
    /* Choice/Question specific */
    --qrv-choice-bg: #ffffff;
    --qrv-choice-hover: #f8f9fa;
    --qrv-choice-selected: #e7f3ff;
    --qrv-choice-selected-border: #007bff;
    --qrv-question-bg: rgba(23, 13, 38, 0.05);
    
    /* Status colors */
    --qrv-success: #28a745;
    --qrv-success-bg: rgba(40, 167, 69, 0.1);
    --qrv-danger: #dc3545;
    --qrv-danger-bg: rgba(220, 53, 69, 0.1);
    --qrv-warning: #ffc107;
    --qrv-info: #17a2b8;
    
    /* Circle indicators */
    --qrv-circle-bg: #f8f9fa;
    --qrv-circle-border: #dee2e6;
    --qrv-circle-current-bg: #e7f3ff;
    --qrv-circle-current-border: #007bff;
    
    /* Table */
    --qrv-table-header-bg: rgba(23, 13, 38, 0.1);
    
    /* Scrollbar */
    --qrv-scrollbar-track: #f1f1f1;
    --qrv-scrollbar-thumb: #170d26;
}

/* ==========================================
   DARK MODE THEME
   ========================================== */
[data-bs-theme="dark"] {
    /* Brand colors - slightly lighter for dark mode */
    --qrv-brand-primary: #2d1b4e;
    --qrv-brand-secondary: #4a2c7a;
    --qrv-brand-accent: #6b42a8;
    
    /* Background colors - dark palette */
    --qrv-bg-body: #0d1117;
    --qrv-bg-secondary: #161b22;
    --qrv-bg-tertiary: #717274;
    --qrv-bg-card: #161b22;
    --qrv-bg-sidebar: #0d1117;
    --qrv-bg-input: #21262d;
    
    /* Text colors */
    --qrv-text-primary: #e6edf3;
    --qrv-text-secondary: #8b949e;
    --qrv-text-muted: #8b949e;
    --qrv-text-inverse: #0d1117;
    
    /* Border colors */
    --qrv-border-color: #30363d;
    --qrv-border-light: #30363d;
    --qrv-border-input: #30363d;
    
    /* Shadow colors */
    --qrv-shadow-sm: rgba(0, 0, 0, 0.3);
    --qrv-shadow-md: rgba(0, 0, 0, 0.4);
    --qrv-shadow-lg: rgba(0, 0, 0, 0.5);
    
    /* Choice/Question specific */
    --qrv-choice-bg: #161b22;
    --qrv-choice-hover: #21262d;
    --qrv-choice-selected: #1f3a5f;
    --qrv-choice-selected-border: #388bfd;
    --qrv-question-bg: rgba(45, 27, 78, 0.2);
    
    /* Status colors - slightly adjusted for dark */
    --qrv-success: #3fb950;
    --qrv-success-bg: rgba(63, 185, 80, 0.15);
    --qrv-danger: #f85149;
    --qrv-danger-bg: rgba(248, 81, 73, 0.15);
    --qrv-warning: #d29922;
    --qrv-info: #58a6ff;
    
    /* Circle indicators */
    --qrv-circle-bg: #21262d;
    --qrv-circle-border: #30363d;
    --qrv-circle-current-bg: #1f3a5f;
    --qrv-circle-current-border: #388bfd;
    
    /* Table */
    --qrv-table-header-bg: rgba(45, 27, 78, 0.3);
    
    /* Scrollbar */
    --qrv-scrollbar-track: #21262d;
    --qrv-scrollbar-thumb: #484f58;
}

/* ==========================================
   BASE STYLES WITH VARIABLES
   ========================================== */

/* Apply theme to body */
body {
    background-color: var(--qrv-bg-body);
    color: var(--qrv-text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Override Bootstrap primary colors */
.bg-primary {
    background-color: var(--qrv-brand-primary) !important;
}

.btn-primary {
    background-color: var(--qrv-brand-primary) !important;
    border-color: var(--qrv-brand-primary) !important;
}

.btn-primary:hover {
    background-color: var(--qrv-brand-secondary) !important;
    border-color: var(--qrv-brand-secondary) !important;
}

[data-bs-theme="dark"] .btn-primary {
    background-color: #9c6af8 !important;
    border-color: #9c6af8 !important;
    color: #0d1117 !important;
}

[data-bs-theme="dark"] .btn-primary:hover {
    background-color: #b79bff !important;
    border-color: #b79bff !important;
    color: #0d1117 !important;
}

.btn-outline-primary {
    color: var(--qrv-brand-primary) !important;
    border-color: var(--qrv-brand-primary) !important;
}

[data-bs-theme="dark"] .btn-outline-primary {
    color: #a78bfa !important;
    border-color: #a78bfa !important;
}

.btn-outline-primary:hover {
    background-color: var(--qrv-brand-primary) !important;
    border-color: var(--qrv-brand-primary) !important;
    color: white !important;
}

.btn-outline-primary:hover i {
    color: white !important;
}

.text-primary {
    color: var(--qrv-brand-primary) !important;
}

[data-bs-theme="dark"] .text-primary {
    color: #a78bfa !important;
}

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

/* Hero section */
.hero-section {
    background: linear-gradient(135deg, #170d26 0%, #2d1b4e 100%) !important;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url("#grain#grain")"/></svg>');
    opacity: 0.3;
}

/* Choice styling */
.choice-item label {
    transition: all 0.3s ease;
    border-radius: 8px;
    cursor: pointer;
}

.choice-item label:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--qrv-shadow-md);
}

.choice-item input[type="radio"]:checked + label {
    background-color: var(--qrv-brand-primary) !important;
    border-color: var(--qrv-brand-primary) !important;
    color: white !important;
}

/* Progress bars */
.progress {
    border-radius: 10px;
    overflow: hidden;
    background-color: var(--qrv-bg-tertiary);
}

.progress-bar {
    transition: width 0.6s ease;
}

.progress-bar.bg-success {
    background-color: var(--qrv-success) !important;
}

.progress-bar.bg-danger {
    background-color: var(--qrv-danger) !important;
}

.progress-bar.bg-secondary {
    background-color: #6c757d !important;
}

.progress-bar.bg-warning {
    background-color: var(--qrv-warning) !important;
}

.progress-bar.bg-info {
    background-color: var(--qrv-info) !important;
}

.progress-bar.bg-primary {
    background-color: var(--qrv-brand-primary) !important;
}

/* Card styling */
.card {
    border-radius: 12px;
    transition: all 0.3s ease;
    background-color: var(--qrv-bg-card);
    border-color: var(--qrv-border-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--qrv-shadow-md);
}

.card-header {
    background-color: var(--qrv-bg-card);
    border-bottom-color: var(--qrv-border-color);
}

.activity-chart-header {
    background-color: var(--qrv-bg-card);
    border-bottom: 1px solid var(--qrv-border-color);
}

.card-body {
    background-color: var(--qrv-bg-card);
}

/* Card body with rounded border in dark mode */
[data-bs-theme="dark"] .card-body {
    border: 1px solid var(--qrv-border-color);
    border-radius: 12px;
}

/* Button styling */
.btn {
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--qrv-shadow-lg);
}

/* Secondary buttons in dark mode */
[data-bs-theme="dark"] .btn-outline-secondary {
    color: var(--qrv-text-secondary);
    border-color: var(--qrv-border-color);
}

[data-bs-theme="dark"] .btn-outline-secondary:hover {
    background-color: var(--qrv-bg-tertiary);
    border-color: var(--qrv-border-color);
    color: var(--qrv-text-primary);
}

/* Navbar styling */
.navbar {
    box-shadow: 0 2px 10px var(--qrv-shadow-sm);
}

.navbar-brand {
    font-weight: bold;
}

/* Stats cards */
.stats-card {
    background: linear-gradient(135deg, #170d26 0%, #2d1b4e 100%);
    color: white;
}

/* Category cards */
.category-card {
    border-left: 4px solid var(--qrv-brand-primary);
    background-color: var(--qrv-bg-card);
}

.category-card:hover {
    border-left-color: var(--qrv-brand-secondary);
}

/* Question form */
.question-form {
    background: var(--qrv-question-bg);
    border-radius: 12px;
    padding: 20px;
}

/* Pagination */
.pagination .page-link {
    color: var(--qrv-brand-primary);
    border-color: var(--qrv-border-light);
    background-color: var(--qrv-bg-card);
}

[data-bs-theme="dark"] .pagination .page-link {
    color: #a78bfa;
    background-color: var(--qrv-bg-secondary);
    border-color: var(--qrv-border-color);
}

.pagination .page-item.active .page-link {
    background-color: var(--qrv-brand-primary);
    border-color: var(--qrv-brand-primary);
}

/* Alerts */
.alert {
    border-radius: 8px;
    border: none;
}

/* Footer */
footer {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%);
}

/* Responsive design */
@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 0;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--qrv-border-color);
    border-radius: 50%;
    border-top-color: var(--qrv-brand-primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Choice feedback */
.choice-correct {
    background-color: var(--qrv-success-bg) !important;
    border-color: var(--qrv-success) !important;
}

.choice-incorrect {
    background-color: var(--qrv-danger-bg) !important;
    border-color: var(--qrv-danger) !important;
}

/* Breadcrumb */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--qrv-brand-primary);
}

[data-bs-theme="dark"] .breadcrumb-item + .breadcrumb-item::before {
    color: #a78bfa;
}

/* Table styling */
.table {
    border-radius: 8px;
    overflow: hidden;
    color: var(--qrv-text-primary);
}

.table th {
    background-color: var(--qrv-table-header-bg);
    border-bottom: 2px solid var(--qrv-brand-primary);
    color: var(--qrv-text-primary);
    font-weight: 600;
}

[data-bs-theme="dark"] .table {
    --bs-table-bg: var(--qrv-bg-card);
    --bs-table-border-color: var(--qrv-border-color);
}

/* Badge styling */
.badge {
    border-radius: 6px;
    font-weight: 500;
}

/* Form controls */
.form-control {
    border-radius: 8px;
    border: 2px solid var(--qrv-border-input);
    background-color: var(--qrv-bg-input);
    color: var(--qrv-text-primary);
}

.form-control:focus {
    border-color: var(--qrv-brand-primary);
    box-shadow: 0 0 0 0.2rem rgba(23, 13, 38, 0.25);
    background-color: var(--qrv-bg-input);
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .form-control:focus {
    box-shadow: 0 0 0 0.2rem rgba(167, 139, 250, 0.25);
}

.form-control::placeholder {
    color: var(--qrv-text-muted);
}

.form-select {
    background-color: var(--qrv-bg-input);
    border-color: var(--qrv-border-input);
    color: var(--qrv-text-primary);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--qrv-scrollbar-track);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--qrv-scrollbar-thumb);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--qrv-brand-secondary);
}

/* Modal styling */
.modal-backdrop {
    background-color: rgba(23, 13, 38, 0.5);
}

[data-bs-theme="dark"] .modal-backdrop {
    background-color: rgba(0, 0, 0, 0.7);
}

.modal {
    backdrop-filter: blur(5px);
}

.modal-content {
    border-radius: 12px;
    border: none;
    box-shadow: 0 10px 30px var(--qrv-shadow-lg);
    background-color: var(--qrv-bg-card);
    color: var(--qrv-text-primary);
}

.modal-header {
    border-bottom-color: var(--qrv-border-color);
}

.modal-footer {
    border-top-color: var(--qrv-border-color);
}

.modal-dialog {
    border-radius: 12px;
}

.modal-backdrop.show {
    opacity: 0.7;
}

/* ==========================================
   DARK MODE SPECIFIC OVERRIDES
   ========================================== */

/* Fix Bootstrap bg-light in dark mode */
[data-bs-theme="dark"] .bg-light {
    background-color: var(--qrv-bg-tertiary) !important;
}

/* Fix Bootstrap bg-white in dark mode */
[data-bs-theme="dark"] .bg-white {
    background-color: var(--qrv-bg-card) !important;
    color: var(--qrv-text-primary) !important;
}

/* Fix text-dark in dark mode */
[data-bs-theme="dark"] .text-dark {
    color: var(--qrv-text-primary) !important;
}

/* Fix border-light in dark mode */
[data-bs-theme="dark"] .border-light {
    border-color: var(--qrv-border-color) !important;
}

/* Fix card headers/footers that force bg-white */
[data-bs-theme="dark"] .card-header.bg-white,
[data-bs-theme="dark"] .card-footer.bg-white {
    background-color: var(--qrv-bg-secondary) !important;
    color: var(--qrv-text-primary) !important;
    border-color: var(--qrv-border-color) !important;
}

/* Fix text-muted in dark mode */
[data-bs-theme="dark"] .text-muted {
    color: var(--qrv-text-muted) !important;
}

/* Fix dropdown menus */
[data-bs-theme="dark"] .dropdown-menu {
    background-color: var(--qrv-bg-secondary);
    border-color: var(--qrv-border-color);
}

[data-bs-theme="dark"] .dropdown-item {
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .dropdown-item:hover {
    background-color: var(--qrv-bg-tertiary);
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .dropdown-divider {
    border-color: var(--qrv-border-color);
}

/* Fix list groups */
[data-bs-theme="dark"] .list-group-item {
    background-color: var(--qrv-bg-card);
    border-color: var(--qrv-border-color);
    color: var(--qrv-text-primary);
}

/* Fix borders */
[data-bs-theme="dark"] .border,
[data-bs-theme="dark"] .border-top,
[data-bs-theme="dark"] .border-bottom,
[data-bs-theme="dark"] .border-start,
[data-bs-theme="dark"] .border-end {
    border-color: var(--qrv-border-color) !important;
}

/* Question and Choice styling for dark mode */
[data-bs-theme="dark"] .choice-text {
    background-color: var(--qrv-choice-bg);
    border-color: var(--qrv-border-color);
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .choice-text:hover {
    background-color: var(--qrv-choice-hover);
    border-color: var(--qrv-choice-selected-border) !important;
}

[data-bs-theme="dark"] .choice-text.selected {
    background-color: var(--qrv-choice-selected) !important;
    border-color: var(--qrv-choice-selected-border) !important;
}

/* Question circles */
[data-bs-theme="dark"] .circle {
    background-color: var(--qrv-circle-bg);
    border-color: var(--qrv-circle-border);
    color: var(--qrv-text-secondary);
}

[data-bs-theme="dark"] .circle.current {
    background-color: var(--qrv-circle-current-bg);
    border-color: var(--qrv-circle-current-border);
}

[data-bs-theme="dark"] .circle.correct {
    background-color: var(--qrv-success-bg);
    border-color: var(--qrv-success);
    color: var(--qrv-success);
}

[data-bs-theme="dark"] .circle.incorrect {
    background-color: var(--qrv-danger-bg);
    border-color: var(--qrv-danger);
    color: var(--qrv-danger);
}

/* Content detail page styling */
[data-bs-theme="dark"] .content-sidebar {
    background-color: var(--qrv-bg-sidebar);
    border-color: var(--qrv-border-color);
}

[data-bs-theme="dark"] .content-title,
[data-bs-theme="dark"] .sidebar-title {
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .content-subtitle,
[data-bs-theme="dark"] .sidebar-subtitle,
[data-bs-theme="dark"] .content-meta {
    color: var(--qrv-text-secondary);
}

[data-bs-theme="dark"] .sidebar-nav-link {
    color: var(--qrv-text-secondary);
}

[data-bs-theme="dark"] .sidebar-nav-link:hover {
    background-color: var(--qrv-bg-tertiary);
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .sidebar-header {
    border-bottom-color: var(--qrv-border-color);
}

[data-bs-theme="dark"] .content-header {
    border-bottom-color: var(--qrv-border-color);
}

/* Article content styling */
[data-bs-theme="dark"] .article-content {
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .article-content h1,
[data-bs-theme="dark"] .article-content h2,
[data-bs-theme="dark"] .article-content h3,
[data-bs-theme="dark"] .article-content h4,
[data-bs-theme="dark"] .article-content h5,
[data-bs-theme="dark"] .article-content h6 {
    color: var(--qrv-text-primary);
}

[data-bs-theme="dark"] .article-content blockquote {
    background-color: var(--qrv-bg-tertiary);
    border-left-color: var(--qrv-brand-secondary);
    color: var(--qrv-text-secondary);
}

[data-bs-theme="dark"] .article-content code {
    background-color: var(--qrv-bg-tertiary);
    color: #f0abfc;
}

[data-bs-theme="dark"] .article-content pre {
    background-color: var(--qrv-bg-tertiary);
    border-color: var(--qrv-border-color);
}

/* Question text in dark mode */
[data-bs-theme="dark"] .question-text,
[data-bs-theme="dark"] .question-text h5 {
    color: var(--qrv-text-primary);
}

/* KPI cards dark mode */
[data-bs-theme="dark"] .kpi-card {
    background-color: var(--qrv-bg-card);
    border-color: var(--qrv-border-color);
}

[data-bs-theme="dark"] .delta-up {
    background-color: var(--qrv-success-bg);
    color: var(--qrv-success);
}

[data-bs-theme="dark"] .delta-down {
    background-color: var(--qrv-danger-bg);
    color: var(--qrv-danger);
}

/* ==========================================
   DARK MODE TABLES - GLOBAL PURPLE THEME
   ========================================== */
[data-bs-theme="dark"] .table {
    color: var(--qrv-text, #c9d1d9);
    border-color: rgba(156, 106, 248, 0.2);
}

[data-bs-theme="dark"] .table > thead {
    background-color: rgba(156, 106, 248, 0.1);
}

[data-bs-theme="dark"] .table > thead > tr > th {
    background-color: rgba(156, 106, 248, 0.1);
    color: #ffffff;
    border-color: rgba(156, 106, 248, 0.3);
    border-bottom: 2px solid #ffffff;
}

[data-bs-theme="dark"] .table-light,
[data-bs-theme="dark"] .table-light > th,
[data-bs-theme="dark"] .table-light > td {
    background-color: rgba(156, 106, 248, 0.1) !important;
    color: #b38cfc !important;
}

[data-bs-theme="dark"] .table > tbody > tr {
    border-color: rgba(156, 106, 248, 0.15);
}

[data-bs-theme="dark"] .table > tbody > tr > td {
    border-color: rgba(156, 106, 248, 0.15);
}

[data-bs-theme="dark"] .table-hover > tbody > tr:hover {
    background-color: rgba(156, 106, 248, 0.08);
    color: var(--qrv-text, #c9d1d9);
}

/* ==========================================
   DARK MODE KPI CARDS
   ========================================== */
[data-bs-theme="dark"] .kpi-card.bg-white {
    background-color: var(--qrv-bg-secondary, #161b22) !important;
    border: 1px solid var(--qrv-border, #30363d) !important;
}

[data-bs-theme="dark"] .kpi-card .subtle {
    color: var(--qrv-text-muted, #8b949e) !important;
}

[data-bs-theme="dark"] .kpi-card .display-5,
[data-bs-theme="dark"] .kpi-card .display-6 {
    color: var(--qrv-text, #c9d1d9) !important;
}


/* Fix neutral delta badge in dark mode */
[data-bs-theme="dark"] .kpi-card .delta-badge[style*="background: #f8f9fa"] {
    background-color: var(--qrv-bg-tertiary, #21262d) !important;
    color: var(--qrv-text-muted, #8b949e) !important;
}

/* ==========================================
   DARK MODE CARDS (Global)
   ========================================== */
[data-bs-theme="dark"] .card.border-0.shadow-sm {
    background-color: var(--qrv-bg-secondary, #161b22) !important;
    border: 1px solid var(--qrv-border, #30363d) !important;
    border-radius: 12px !important;
}

[data-bs-theme="dark"] .card.border-0.shadow-sm .card-body {
    background-color: var(--qrv-bg-secondary, #161b22) !important;
    border-radius: 10px !important;
}

[data-bs-theme="dark"] .card.border-0.shadow-sm .card-header {
    background-color: var(--qrv-bg-tertiary, #21262d) !important;
    border-color: var(--qrv-border, #30363d) !important;
}

/* ==========================================
   DARK MODE TOGGLE BUTTON
   ========================================== */
.theme-toggle {
    background: transparent;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-toggle i {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
    color: #ffffff !important;
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

/* Smooth transitions for theme changes */
*, *::before, *::after {
    transition-property: background-color, border-color, color;
    transition-duration: 0.15s;
    transition-timing-function: ease-out;
}

/* Disable transitions for specific elements to avoid jank */
.btn, .nav-link, .dropdown-item, .progress-bar {
    transition: all 0.3s ease;
}

/* ==========================================
   READING MODE ENHANCEMENTS (Dark Mode)
   ========================================== */
[data-bs-theme="dark"] {
    /* Improve readability for long content */
    --qrv-reading-line-height: 1.7;
    --qrv-reading-letter-spacing: 0.01em;
}

[data-bs-theme="dark"] .article-content p,
[data-bs-theme="dark"] .question-text,
[data-bs-theme="dark"] .choice-content {
    line-height: var(--qrv-reading-line-height);
    letter-spacing: var(--qrv-reading-letter-spacing);
}

/* Reduce eye strain with slightly dimmed white text */
[data-bs-theme="dark"] {
    --qrv-text-primary: #e6edf3;
}