/* Dark Theme Enhancements for Nexus Learning Platform */

/* Dark mode base styles */
.dark {
    color-scheme: dark;
}

/* Enhanced dark mode for cards and containers */
.dark .bg-white {
    background-color: #1f2937 !important;
}

.dark .card,
.dark .stats-card,
.dark .progress-card {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3) !important;
}

.dark .card:hover,
.dark .stats-card:hover,
.dark .progress-card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4) !important;
}

/* Enhanced dark mode for subject cards */
.dark .subject-card {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3) !important;
}

.dark .subject-card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4) !important;
    transform: translateY(-5px);
}

.dark .subject-card .card-text {
    color: #d1d5db !important;
}

.dark .subject-card .card-title {
    color: #f9fafb !important;
}

/* Enhanced dark mode for navigation */
.dark nav {
    background-color: #111827 !important;
    border-color: #374151 !important;
}

/* Enhanced dark mode for buttons */
.dark .btn-primary {
    background-color: #3b82f6 !important;
    border-color: #3b82f6 !important;
    color: #ffffff !important;
}

.dark .btn-primary:hover {
    background-color: #2563eb !important;
    border-color: #2563eb !important;
}

.dark .btn-secondary {
    background-color: #6b7280 !important;
    border-color: #6b7280 !important;
    color: #ffffff !important;
}

.dark .btn-secondary:hover {
    background-color: #4b5563 !important;
    border-color: #4b5563 !important;
}

/* Enhanced dark mode for forms */
.dark .form-control {
    background-color: #374151 !important;
    border-color: #4b5563 !important;
    color: #f9fafb !important;
}

.dark .form-control:focus {
    background-color: #374151 !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25) !important;
}

.dark .form-control::placeholder {
    color: #9ca3af !important;
}

/* Enhanced dark mode for modals */
.dark .modal-content {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
}

.dark .modal-header {
    border-color: #374151 !important;
    background-color: #111827 !important;
}

.dark .modal-footer {
    border-color: #374151 !important;
    background-color: #111827 !important;
}

/* Enhanced dark mode for tables */
.dark .table {
    color: #f9fafb !important;
}

.dark .table th {
    background-color: #111827 !important;
    border-color: #374151 !important;
    color: #f9fafb !important;
}

.dark .table td {
    border-color: #374151 !important;
    color: #d1d5db !important;
}

.dark .table-hover tbody tr:hover {
    background-color: #374151 !important;
}

/* Enhanced dark mode for alerts */
.dark .alert {
    border-color: #374151 !important;
}

.dark .alert-info {
    background-color: #1e3a8a !important;
    border-color: #3b82f6 !important;
    color: #dbeafe !important;
}

.dark .alert-success {
    background-color: #065f46 !important;
    border-color: #10b981 !important;
    color: #d1fae5 !important;
}

.dark .alert-warning {
    background-color: #92400e !important;
    border-color: #f59e0b !important;
    color: #fef3c7 !important;
}

.dark .alert-danger {
    background-color: #991b1b !important;
    border-color: #ef4444 !important;
    color: #fee2e2 !important;
}

/* Enhanced dark mode for badges */
.dark .badge.bg-primary {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

.dark .badge.bg-success {
    background-color: #10b981 !important;
    color: #ffffff !important;
}

.dark .badge.bg-warning {
    background-color: #f59e0b !important;
    color: #ffffff !important;
}

.dark .badge.bg-danger {
    background-color: #ef4444 !important;
    color: #ffffff !important;
}

.dark .badge.bg-info {
    background-color: #06b6d4 !important;
    color: #ffffff !important;
}

.dark .badge.bg-secondary {
    background-color: #6b7280 !important;
    color: #ffffff !important;
}

/* Enhanced dark mode for list groups */
.dark .list-group-item {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
    color: #d1d5db !important;
}

.dark .list-group-item:hover {
    background-color: #374151 !important;
}

.dark .list-group-item.active {
    background-color: #3b82f6 !important;
    border-color: #3b82f6 !important;
    color: #ffffff !important;
}

/* Enhanced dark mode for breadcrumbs */
.dark .breadcrumb {
    background-color: transparent !important;
}

.dark .breadcrumb-item {
    color: #9ca3af !important;
}

.dark .breadcrumb-item.active {
    color: #f9fafb !important;
}

.dark .breadcrumb-item + .breadcrumb-item::before {
    color: #6b7280 !important;
}

/* Enhanced dark mode for pagination */
.dark .pagination .page-link {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
    color: #d1d5db !important;
}

.dark .pagination .page-link:hover {
    background-color: #374151 !important;
    border-color: #4b5563 !important;
    color: #f9fafb !important;
}

.dark .pagination .page-item.active .page-link {
    background-color: #3b82f6 !important;
    border-color: #3b82f6 !important;
    color: #ffffff !important;
}

.dark .pagination .page-item.disabled .page-link {
    background-color: #111827 !important;
    border-color: #374151 !important;
    color: #6b7280 !important;
}

/* Enhanced dark mode for dropdowns */
.dark .dropdown-menu {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3) !important;
}

.dark .dropdown-item {
    color: #d1d5db !important;
}

.dark .dropdown-item:hover {
    background-color: #374151 !important;
    color: #f9fafb !important;
}

.dark .dropdown-divider {
    border-color: #374151 !important;
}

/* Enhanced dark mode for tooltips */
.dark .tooltip-inner {
    background-color: #1f2937 !important;
    color: #f9fafb !important;
}

.dark .tooltip.bs-tooltip-top .tooltip-arrow::before {
    border-top-color: #1f2937 !important;
}

.dark .tooltip.bs-tooltip-bottom .tooltip-arrow::before {
    border-bottom-color: #1f2937 !important;
}

.dark .tooltip.bs-tooltip-start .tooltip-arrow::before {
    border-left-color: #1f2937 !important;
}

.dark .tooltip.bs-tooltip-end .tooltip-arrow::before {
    border-right-color: #1f2937 !important;
}

/* Enhanced dark mode for popovers */
.dark .popover {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3) !important;
}

.dark .popover-header {
    background-color: #111827 !important;
    border-color: #374151 !important;
    color: #f9fafb !important;
}

.dark .popover-body {
    color: #d1d5db !important;
}

.dark .popover .arrow::before {
    border-color: #374151 !important;
}

/* Enhanced dark mode for code blocks */
.dark pre {
    background-color: #111827 !important;
    border-color: #374151 !important;
    color: #d1d5db !important;
}

.dark code {
    background-color: #374151 !important;
    color: #f9fafb !important;
}

/* Enhanced dark mode for blockquotes */
.dark blockquote {
    border-left-color: #3b82f6 !important;
    background-color: #374151 !important;
    color: #d1d5db !important;
}

/* Enhanced dark mode for links */
.dark a {
    color: #3b82f6 !important;
}

.dark a:hover {
    color: #60a5fa !important;
}

/* Enhanced dark mode for text colors */
.dark .text-muted {
    color: #9ca3af !important;
}

.dark .text-primary {
    color: #3b82f6 !important;
}

.dark .text-success {
    color: #10b981 !important;
}

.dark .text-info {
    color: #06b6d4 !important;
}

.dark .text-warning {
    color: #f59e0b !important;
}

.dark .text-danger {
    color: #ef4444 !important;
}

/* Enhanced dark mode for backgrounds */
.dark .bg-light {
    background-color: #374151 !important;
}

.dark .bg-white {
    background-color: #1f2937 !important;
}

/* Enhanced dark mode for gradients */
.dark .bg-gradient-primary {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%) !important;
}

.dark .bg-gradient-success {
    background: linear-gradient(135deg, #065f46 0%, #10b981 100%) !important;
}

.dark .bg-gradient-info {
    background: linear-gradient(135deg, #0e7490 0%, #06b6d4 100%) !important;
}

/* Enhanced dark mode for content sections */
.dark .content-media-section {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
}

.dark .content-media-section h4 {
    color: #f9fafb !important;
}

.dark .media-item {
    background-color: #374151 !important;
    border-color: #4b5563 !important;
}

.dark .media-caption {
    background-color: #111827 !important;
    color: #d1d5db !important;
}

.dark .media-caption h6 {
    color: #f9fafb !important;
}

.dark .media-caption p {
    color: #9ca3af !important;
}

/* Enhanced dark mode for AI headings */
.dark .ai-heading {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%) !important;
    color: #ffffff !important;
}

/* Enhanced dark mode for hover effects */
.dark .subject-card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4) !important;
}

.dark .topic-card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4) !important;
}

/* Enhanced dark mode for scrollbars */
.dark ::-webkit-scrollbar {
    width: 8px;
}

.dark ::-webkit-scrollbar-track {
    background: #1f2937 !important;
}

.dark ::-webkit-scrollbar-thumb {
    background: #4b5563 !important;
    border-radius: 4px;
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: #6b7280 !important;
}

/* Enhanced dark mode for selection */
.dark ::selection {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

.dark ::-moz-selection {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

/* Enhanced dark mode for lesson content */
.dark .lesson-content h1,
.dark .explanation-content h1,
.dark .quiz-content h1 {
    color: #f9fafb !important;
    border-bottom-color: #374151 !important;
}

.dark .lesson-content h2,
.dark .explanation-content h2,
.dark .quiz-content h2 {
    color: #FF6B35 !important;
    border-bottom-color: #FF6B35 !important;
}

.dark .lesson-content h3,
.dark .explanation-content h3,
.dark .quiz-content h3 {
    color: #4A90E2 !important;
    border-left-color: #4A90E2 !important;
}

.dark .lesson-content p,
.dark .explanation-content p,
.dark .quiz-content p {
    color: #d1d5db !important;
}

.dark .lesson-content ul,
.dark .explanation-content ul,
.dark .quiz-content ul {
    color: #d1d5db !important;
}

.dark .lesson-content li,
.dark .explanation-content li,
.dark .quiz-content li {
    color: #d1d5db !important;
}

/* Enhanced dark mode for chat sidebar */
.dark .chat-sidebar {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
}

.dark .chat-history-main {
    background-color: #111827 !important;
}

.dark .chat-history-main .justify-content-end .p-3 {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

.dark .chat-history-main .justify-content-start .p-3 {
    background-color: #374151 !important;
    color: #d1d5db !important;
}

/* Enhanced dark mode for buttons */
.dark .btn-outline-secondary {
    color: #9ca3af !important;
    border-color: #6b7280 !important;
}

.dark .btn-outline-secondary:hover {
    background-color: #6b7280 !important;
    color: #ffffff !important;
}

.dark .btn-outline-primary {
    color: #3b82f6 !important;
    border-color: #3b82f6 !important;
}

.dark .btn-outline-primary:hover {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

.dark .btn-outline-success {
    color: #10b981 !important;
    border-color: #10b981 !important;
}

.dark .btn-outline-success:hover {
    background-color: #10b981 !important;
    color: #ffffff !important;
}

.dark .btn-outline-info {
    color: #06b6d4 !important;
    border-color: #06b6d4 !important;
}

.dark .btn-outline-info:hover {
    background-color: #06b6d4 !important;
    color: #ffffff !important;
}

.dark .btn-outline-warning {
    color: #f59e0b !important;
    border-color: #f59e0b !important;
}

.dark .btn-outline-warning:hover {
    background-color: #f59e0b !important;
    color: #ffffff !important;
}

/* Enhanced dark mode for input groups */
.dark .input-group-text {
    background-color: #374151 !important;
    border-color: #4b5563 !important;
    color: #d1d5db !important;
}

/* Enhanced dark mode for close buttons */
.dark .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Smooth transitions for theme switching */
* {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

/* Enhanced dark mode for specific components */
.dark .gradient-bg {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%) !important;
}

.dark .card-hover:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2) !important;
}

/* Enhanced dark mode for progress bars */
.dark .progress {
    background-color: #374151 !important;
}

.dark .progress-bar {
    background-color: #3b82f6 !important;
}

/* Enhanced dark mode for floating chat button */
.dark #openChatBtn {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3) !important;
}

.dark #openChatBtn:hover {
    background-color: #2563eb !important;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4) !important;
}

/* Enhanced dark mode for sidebar headers */
.dark .sidebar-header.stats {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%) !important;
}

.dark .sidebar-header.progress {
    background: linear-gradient(135deg, #065f46 0%, #10b981 100%) !important;
}

/* Enhanced dark mode for progress bar container */
.dark .progress-bar-container {
    background-color: #374151 !important;
}

.dark .progress-bar {
    background-color: #3b82f6 !important;
}

/* Enhanced dark mode for emoji icons */
.dark .subject-card .icon-container,
.dark .subject-card .emoji-icon {
    color: #10b981 !important;
}

/* Enhanced dark mode for filter buttons */
.dark .filter-btn {
    background-color: #374151 !important;
    color: #d1d5db !important;
    border-color: #4b5563 !important;
}

.dark .filter-btn:hover,
.dark .filter-btn:focus {
    background-color: #4b5563 !important;
    color: #f9fafb !important;
}

.dark .filter-btn.active {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
    border-color: #3b82f6 !important;
}

/* Enhanced dark mode for pagination buttons */
.dark .pagination-nav-btn {
    background-color: #374151 !important;
    color: #d1d5db !important;
    border-color: #4b5563 !important;
}

.dark .pagination-nav-btn:hover,
.dark .pagination-nav-btn:focus {
    background-color: #4b5563 !important;
    color: #f9fafb !important;
}

.dark .pagination-page-btn {
    background-color: #374151 !important;
    color: #d1d5db !important;
    border-color: #4b5563 !important;
}

.dark .pagination-page-btn.active,
.dark .pagination-page-btn:active {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
    border-color: #3b82f6 !important;
}

.dark .pagination-page-btn:hover,
.dark .pagination-page-btn:focus {
    background-color: #4b5563 !important;
    color: #f9fafb !important;
}

/* Enhanced dark mode for research components */
.dark .research-input {
    background-color: #374151 !important;
    border-color: #4b5563 !important;
    color: #f9fafb !important;
}

.dark .research-input:focus {
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25) !important;
}

.dark .analysis-card {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
}

.dark .topic-card {
    background-color: #1f2937 !important;
    border-color: #374151 !important;
}

.dark .topic-card:hover {
    background-color: #374151 !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4) !important;
}

.dark .relevance-badge {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

/* Enhanced dark mode for loading states */
.dark .loading-dots::after {
    color: #3b82f6 !important;
}

/* Enhanced dark mode for animations */
.dark .floating {
    animation: floating 3s ease-in-out infinite;
}

/* Enhanced dark mode for utility classes */
.dark .text-gray-900 {
    color: #f9fafb !important;
}

.dark .text-gray-800 {
    color: #e5e7eb !important;
}

.dark .text-gray-700 {
    color: #d1d5db !important;
}

.dark .text-gray-600 {
    color: #9ca3af !important;
}

.dark .text-gray-500 {
    color: #6b7280 !important;
}

.dark .text-gray-400 {
    color: #9ca3af !important;
}

.dark .text-gray-300 {
    color: #d1d5db !important;
}

.dark .text-gray-200 {
    color: #e5e7eb !important;
}

.dark .text-gray-100 {
    color: #f3f4f6 !important;
}

.dark .bg-gray-50 {
    background-color: #111827 !important;
}

.dark .bg-gray-100 {
    background-color: #1f2937 !important;
}

.dark .bg-gray-200 {
    background-color: #374151 !important;
}

.dark .bg-gray-300 {
    background-color: #4b5563 !important;
}

.dark .bg-gray-400 {
    background-color: #6b7280 !important;
}

.dark .bg-gray-500 {
    background-color: #9ca3af !important;
}

.dark .bg-gray-600 {
    background-color: #d1d5db !important;
}

.dark .bg-gray-700 {
    background-color: #e5e7eb !important;
}

.dark .bg-gray-800 {
    background-color: #f3f4f6 !important;
}

.dark .bg-gray-900 {
    background-color: #f9fafb !important;
}

/* Enhanced dark mode for borders */
.dark .border-gray-200 {
    border-color: #374151 !important;
}

.dark .border-gray-300 {
    border-color: #4b5563 !important;
}

.dark .border-gray-400 {
    border-color: #6b7280 !important;
}

.dark .border-gray-500 {
    border-color: #9ca3af !important;
}

.dark .border-gray-600 {
    border-color: #d1d5db !important;
}

.dark .border-gray-700 {
    border-color: #e5e7eb !important;
}

.dark .border-gray-800 {
    border-color: #f3f4f6 !important;
}

.dark .border-gray-900 {
    border-color: #f9fafb !important;
}