:root {
            --dark-bg: #1a1a1a;
            --darker-bg: #121212;
            --accent: #ff1493;
            --accent-light: #ff69b4;
            --text: #f0f0f0;
            --text-secondary: #b0b0b0;
            --surface: #252525;
            --surface-hover: #303030;
            --border: #444444;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--dark-bg);
            color: var(--text);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        header {
            background-color: var(--darker-bg);
            padding: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
            position: relative;
            z-index: 10;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .logo i {
            color: var(--accent);
            font-size: 1.8rem;
        }

        .logo h1 {
            font-size: 1.5rem;
            font-weight: 600;
        }

        nav {
            display: flex;
            gap: 1.5rem;
        }

        .nav-icon {
            color: var(--text);
            font-size: 1.2rem;
            cursor: pointer;
            position: relative;
            transition: all 0.2s ease;
        }

        .nav-icon:hover {
            color: var(--accent);
        }

        .nav-icon .tooltip {
            position: absolute;
            bottom: -40px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--surface);
            color: var(--text);
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            font-size: 0.8rem;
            opacity: 0;
            visibility: hidden;
            transition: all 0.2s ease;
            white-space: nowrap;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
            border: 1px solid var(--border);
        }

        .nav-icon:hover .tooltip {
            opacity: 1;
            visibility: visible;
        }

        .nav-icon .tooltip::before {
            content: '';
            position: absolute;
            top: -6px;
            left: 50%;
            transform: translateX(-50%);
            border-width: 0 6px 6px 6px;
            border-style: solid;
            border-color: transparent transparent var(--surface) transparent;
        }

        main {
            flex: 1;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .welcome-section {
            text-align: center;
            margin-bottom: 2rem;
        }

        .welcome-section h2 {
            font-size: 2.2rem;
            margin-bottom: 1rem;
            color: var(--text);
        }

        .welcome-section p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto;
        }

        .upload-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            background-color: var(--surface);
            padding: 3rem;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
            position: relative;
        }

        .upload-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }

        .upload-icon {
            font-size: 3rem;
            color: var(--accent);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .upload-icon:hover {
            transform: scale(1.1);
            color: var(--accent-light);
        }

        .upload-text {
            font-size: 1.2rem;
            color: var(--text-secondary);
            text-align: center;
        }

        .upload-input {
            display: none;
        }

        .upload-actions {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }

        .upload-action {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.2rem;
            background-color: var(--darker-bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            color: var(--text);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .upload-action:hover {
            background-color: var(--surface-hover);
            border-color: var(--accent);
            color: var(--accent);
        }

        .upload-action i {
            font-size: 1.1rem;
        }

        .images-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.5rem;
            width: 100%;
            margin-top: 2rem;
        }

        .image-card {
            background-color: var(--surface);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            position: relative;
            cursor: grab;
            display: flex;
            flex-direction: column;
        }

        .image-card.dragging {
            opacity: 0.5;
            cursor: grabbing;
        }

        .image-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
        }

        .image-preview {
            width: 100%;
            height: 160px;
            position: relative;
            overflow: hidden;
        }

        .image-preview img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .image-card:hover .image-preview img {
            transform: scale(1.05);
        }

        .image-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .image-card:hover .image-overlay {
            opacity: 1;
        }

        .image-actions {
            display: flex;
            gap: 1rem;
            padding: 0.5rem;
            background: rgba(0, 0, 0, 0.7);
            border-radius: 20px;
        }

        .image-action-icon {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.2s ease;
            color: white;
            font-size: 1rem;
        }

        .image-action-icon.delete {
            background-color: #ff4444;
        }

        .image-action-icon.delete:hover {
            background-color: #ff0000;
            transform: scale(1.1);
        }

        .image-action-icon.edit {
            background-color: #2196F3;
        }

        .image-action-icon.edit:hover {
            background-color: #1976D2;
            transform: scale(1.1);
        }

        .image-info {
            padding: 1rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .image-name {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text);
            margin: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .image-description {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            line-height: 1.3;
        }

        .image-size {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-top: auto;
        }

        .knowledge-indicator {
            position: absolute;
            top: 10px;
            right: 10px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: white;
            z-index: 5;
        }

        .knowledge-indicator.known {
            background-color: #4CAF50;
        }

        .knowledge-indicator.unknown {
            background-color: #F44336;
        }

        .knowledge-indicator.not-interacted {
            background-color: #9E9E9E;
        }

        .generate-button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin: 2rem auto;
            width: 100%;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(255, 20, 147, 0.3);
        }

        .generate-button:hover {
            background-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(255, 20, 147, 0.4);
        }

        .generate-button:active {
            transform: translateY(1px);
        }

        .generate-button i {
            font-size: 1.2rem;
        }

        .generate-button.disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .generate-button.disabled:hover {
            transform: none;
            box-shadow: 0 4px 10px rgba(255, 20, 147, 0.3);
        }

        /* Settings Panel */
        .settings-panel {
            position: fixed;
            top: 0;
            right: -400px;
            width: 400px;
            height: 100vh;
            background-color: var(--darker-bg);
            box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
            z-index: 100;
            padding: 2rem;
            overflow-y: auto;
            transition: right 0.3s ease;
        }

        .settings-panel.active {
            right: 0;
        }

        .settings-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border);
        }

        .settings-title {
            font-size: 1.5rem;
            font-weight: 600;
        }

        .close-settings {
            font-size: 1.2rem;
            cursor: pointer;
            color: var(--text-secondary);
            transition: all 0.2s ease;
        }

        .close-settings:hover {
            color: var(--accent);
        }

        .settings-group {
            margin-bottom: 1.5rem;
        }

        .settings-group-title {
            font-size: 1rem;
            margin-bottom: 1rem;
            color: var(--accent);
            font-weight: 500;
        }

        .settings-item {
            margin-bottom: 1.2rem;
        }

        .settings-item label {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .settings-item select,
        .settings-item input {
            width: 100%;
            padding: 0.8rem;
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: 4px;
            color: var(--text);
            font-size: 0.9rem;
        }

        .settings-item select:focus,
        .settings-item input:focus {
            outline: none;
            border-color: var(--accent);
        }

        /* Toggle Switch */
        .toggle-switch {
            position: relative;
            display: inline-block;
            width: 50px;
            height: 24px;
        }

        .toggle-switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--border);
            transition: .4s;
            border-radius: 34px;
        }

        .toggle-slider:before {
            position: absolute;
            content: "";
            height: 16px;
            width: 16px;
            left: 4px;
            bottom: 4px;
            background-color: white;
            transition: .4s;
            border-radius: 50%;
        }

        input:checked + .toggle-slider {
            background-color: var(--accent);
        }

        input:checked + .toggle-slider:before {
            transform: translateX(26px);
        }

        .toggle-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .toggle-label {
            font-size: 0.9rem;
            color: var(--text);
        }

        /* Modal */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.6);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .modal {
            background-color: var(--surface);
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            width: 90%;
            max-width: 500px;
            max-height: 90vh;
            overflow: hidden;
            transform: translateY(-50px);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .modal-overlay.active .modal {
            transform: translateY(0);
        }

        .modal-header {
            background-color: var(--darker-bg);
            padding: 1.2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border);
            flex-shrink: 0;
        }

        .modal-title {
            font-size: 1.2rem;
            font-weight: 500;
        }

        .close-modal {
            font-size: 1.2rem;
            cursor: pointer;
            color: var(--text-secondary);
            transition: all 0.2s ease;
            padding: 0.5rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .close-modal:hover {
            color: var(--accent);
            background-color: rgba(255, 20, 147, 0.1);
        }

        .modal-body {
            padding: 1.5rem;
            overflow-y: auto;
            flex-grow: 1;
        }

        .modal-message {
            font-size: 1rem;
            margin-bottom: 1.5rem;
            color: var(--text);
        }

        /* Help Modal Specific Styles */
        .help-content {
            color: var(--text);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .help-tabs {
            display: flex;
            gap: 1rem;
            margin-bottom: 1.5rem;
            border-bottom: 1px solid var(--border);
            padding-bottom: 0.5rem;
        }

        .help-tab {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 1rem;
            padding: 0.5rem 1rem;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s ease;
        }

        .help-tab:hover {
            color: var(--accent);
            background-color: rgba(255, 20, 147, 0.1);
        }

        .help-tab.active {
            color: var(--accent);
            background-color: rgba(255, 20, 147, 0.1);
            font-weight: 500;
        }

        .help-tab-content {
            display: none;
        }

        .help-tab-content.active {
            display: block;
        }

        .help-section {
            margin-bottom: 1.5rem;
            padding: 1rem;
            background-color: var(--darker-bg);
            border-radius: 6px;
            border: 1px solid var(--border);
        }

        .help-section:last-child {
            margin-bottom: 0;
        }

        .help-section-title {
            color: var(--accent);
            font-size: 1.1rem;
            font-weight: 500;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .help-section-title i {
            font-size: 1rem;
        }

        .help-list {
            list-style: none;
            padding-left: 1.5rem;
        }

        .help-list li {
            position: relative;
            margin-bottom: 0.5rem;
            padding-left: 1.5rem;
        }

        .help-list li:before {
            content: '•';
            color: var(--accent);
            position: absolute;
            left: 0;
            font-size: 1.2rem;
        }

        .help-shortcuts {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 0.5rem 1rem;
            margin-top: 0.5rem;
        }

        .shortcut-key {
            background-color: var(--surface);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-family: monospace;
            font-size: 0.9rem;
            color: var(--accent);
            border: 1px solid var(--border);
        }

        .shortcut-description {
            color: var(--text-secondary);
        }

        .help-note {
            margin-top: 1rem;
            padding: 0.8rem;
            background-color: rgba(255, 20, 147, 0.1);
            border-left: 3px solid var(--accent);
            border-radius: 4px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* Loading Animation */
        .loading {
            display: inline-block;
            position: relative;
            width: 80px;
            height: 80px;
            margin: 0 auto;
        }

        .loading div {
            position: absolute;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent);
            animation: loading 1.2s linear infinite;
        }

        .loading div:nth-child(1) {
            top: 8px;
            left: 8px;
            animation-delay: 0s;
        }

        .loading div:nth-child(2) {
            top: 8px;
            left: 32px;
            animation-delay: -0.4s;
        }

        .loading div:nth-child(3) {
            top: 8px;
            left: 56px;
            animation-delay: -0.8s;
        }

        .loading div:nth-child(4) {
            top: 32px;
            left: 8px;
            animation-delay: -0.4s;
        }

        .loading div:nth-child(5) {
            top: 32px;
            left: 32px;
            animation-delay: -0.8s;
        }

        .loading div:nth-child(6) {
            top: 32px;
            left: 56px;
            animation-delay: -1.2s;
        }

        .loading div:nth-child(7) {
            top: 56px;
            left: 8px;
            animation-delay: -0.8s;
        }

        .loading div:nth-child(8) {
            top: 56px;
            left: 32px;
            animation-delay: -1.2s;
        }

        .loading div:nth-child(9) {
            top: 56px;
            left: 56px;
            animation-delay: -1.6s;
        }

        @keyframes loading {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        /* Empty state */
        .empty-state {
            text-align: center;
            margin: 2rem 0;
            display: none;
        }

        .empty-state-icon {
            font-size: 3rem;
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

        .empty-state-text {
            font-size: 1.1rem;
            color: var(--text-secondary);
        }

        /* Footer */
        footer {
            background-color: var(--darker-bg);
            padding: 1.5rem;
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: auto;
        }

        /* Preview panel */
        .preview-panel {
            position: fixed;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100vh;
            background-color: rgba(0, 0, 0, 0.95);
            z-index: 200;
            display: flex;
            flex-direction: column;
            transition: left 0.3s ease;
        }

        .preview-panel.active {
            left: 0;
        }

        .preview-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
            background-color: var(--darker-bg);
        }

        .preview-title {
            font-size: 1.2rem;
            font-weight: 500;
        }

        .preview-controls {
            display: flex;
            gap: 1.5rem;
        }

        .preview-control {
            color: var(--text);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .preview-control:hover {
            color: var(--accent);
        }

        .preview-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 1rem;
            background-color: var(--darker-bg);
        }

        .preview-slide {
            position: relative;
            width: 100%;
            max-width: 1200px;
            height: 675px;
            background-color: white;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
            overflow: hidden;
            margin: 0 auto;
        }

        .preview-slide.overlay-black {
            background-color: black;
        }

        .preview-slide.overlay-white {
            background-color: white;
        }

        .preview-slide.overlay-black .preview-image,
        .preview-slide.overlay-white .preview-image {
            opacity: 0;
        }

        .preview-slide.overlay-black .preview-text,
        .preview-slide.overlay-white .preview-text {
            opacity: 0;
        }

        .preview-image {
            width: 100%;
            height: 100%;
            object-fit: contain;
            padding: 0;
        }

        .preview-text {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 1.5rem;
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            text-align: center;
            font-size: 1.8rem;
            font-weight: 500;
            z-index: 2;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }

        .preview-slide.show-text .preview-text {
            transform: translateY(0);
        }

        .preview-navigation {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 2rem;
            margin-top: 1.5rem;
        }

        .preview-nav-button {
            background-color: var(--surface);
            color: var(--text);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 1.2rem;
        }

        .preview-nav-button:hover {
            background-color: var(--accent);
            color: white;
        }

        .preview-indicator {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            .logo h1 {
                font-size: 1.2rem;
            }

            main {
                padding: 1rem;
            }

            .upload-container {
                padding: 2rem 1rem;
            }

            .welcome-section h2 {
                font-size: 1.8rem;
            }

            .settings-panel {
                width: 100%;
                right: -100%;
            }

            .preview-slide {
                height: 450px;
                max-width: 100%;
            }
        }

        /* Add new CSS styles in the <style> section */
        .preview-control.active {
            color: var(--accent);
        }

        /* Timer styles */
        .timer-container {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: rgba(0, 0, 0, 0.7);
            color: var(--text);
            padding: 5px 10px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 0.9rem;
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 10;
        }

        .timer-container.active {
            opacity: 1;
        }

        .timer-icon {
            color: var(--accent);
        }

        .timer-value {
            font-weight: 500;
        }

        /* Knowledge tracking styles */
        .knowledge-tracker {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 0.9rem;
            z-index: 10;
        }

        .knowledge-checkbox {
            display: flex;
            align-items: center;
            gap: 5px;
            cursor: pointer;
        }

        .knowledge-checkbox input {
            display: none;
        }

        .knowledge-checkbox .checkbox-icon {
            width: 18px;
            height: 18px;
            border: 2px solid var(--text);
            border-radius: 3px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .knowledge-checkbox input:checked + .checkbox-icon {
            background-color: var(--accent);
            border-color: var(--accent);
        }

        .knowledge-checkbox input:checked + .checkbox-icon::after {
            content: '✓';
            color: white;
            font-size: 12px;
        }

        .knowledge-checkbox input:indeterminate + .checkbox-icon {
            background-color: var(--surface);
            border-color: var(--text-secondary);
        }

        .knowledge-checkbox input:indeterminate + .checkbox-icon::after {
            content: '?';
            color: var(--text-secondary);
            font-size: 12px;
        }

        .knowledge-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
            cursor: pointer;
        }

        /* Knowledge indicator in image cards */
        .image-knowledge {
            position: absolute;
            top: 10px;
            right: 10px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: white;
            z-index: 5;
        }

        .image-knowledge.known {
            background-color: #4CAF50;
        }

        .image-knowledge.unknown {
            background-color: #F44336;
        }

        .image-knowledge.not-interacted {
            background-color: #9E9E9E;
        }

        /* Knowledge filter styles */
        .knowledge-filter {
            display: flex;
            gap: 1rem;
            margin-bottom: 1.5rem;
            padding: 1rem;
            background-color: var(--surface);
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }

        .knowledge-filter-title {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            margin-right: 1rem;
        }

        .knowledge-filter-option {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            background-color: var(--darker-bg);
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .knowledge-filter-option:hover {
            background-color: var(--surface-hover);
        }

        .knowledge-filter-option.active {
            background-color: var(--accent);
            color: white;
        }

        .knowledge-filter-option i {
            font-size: 0.9rem;
        }

        .knowledge-filter-count {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-left: 0.5rem;
        }

        .knowledge-filter-option.active .knowledge-filter-count {
            color: white;
        }

        /* Quiz Panel Styles */
        .quiz-panel {
            position: fixed;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100vh;
            background-color: rgba(0, 0, 0, 0.95);
            z-index: 200;
            display: flex;
            flex-direction: column;
            transition: left 0.3s ease;
        }

        .quiz-panel.active {
            left: 0;
        }

        .quiz-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
            background-color: var(--darker-bg);
        }

        .quiz-title {
            font-size: 1.2rem;
            font-weight: 500;
        }

        .quiz-controls {
            display: flex;
            gap: 1.5rem;
        }

        .quiz-control {
            color: var(--text);
            font-size: 1.2rem;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .quiz-control:hover {
            color: var(--accent);
        }

        .quiz-content {
            flex: 1;
            display: flex;
            padding: 1rem;
            gap: 1rem;
            overflow: hidden;
        }

        .quiz-main {
            flex: 2;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .quiz-slide {
            position: relative;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #fff;
            overflow: hidden;
        }

        .quiz-slide.overlay-black::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #000;
            z-index: 1;
            transition: opacity 0.3s ease;
        }

        .quiz-slide.overlay-white::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #fff;
            z-index: 1;
            transition: opacity 0.3s ease;
        }

        .quiz-slide.overlay-black img,
        .quiz-slide.overlay-white img {
            opacity: 0;
        }

        .quiz-slide img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            transition: opacity 0.3s ease;
        }

        .quiz-timer {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: rgba(0, 0, 0, 0.7);
            color: var(--text);
            padding: 5px 10px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 1.2rem;
            font-weight: 500;
            z-index: 10;
        }

        .quiz-timer.active {
            color: var(--accent);
        }

        .quiz-timer.warning {
            color: #ff9800;
        }

        .quiz-timer.danger {
            color: #f44336;
        }

        .quiz-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-top: 1rem;
        }

        .quiz-button {
            background-color: var(--surface);
            color: var(--text);
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1rem;
        }

        .quiz-button:hover {
            background-color: var(--surface-hover);
        }

        .quiz-button.primary {
            background-color: var(--accent);
            color: white;
        }

        .quiz-button.primary:hover {
            background-color: var(--accent-light);
        }

        .quiz-button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .quiz-sidebar {
            flex: 1;
            background-color: var(--surface);
            border-radius: 8px;
            padding: 1rem;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            overflow: hidden;
        }

        .quiz-players {
            flex: 1;
            overflow-y: auto;
        }

        .quiz-player {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem;
            background-color: var(--darker-bg);
            border-radius: 4px;
            margin-bottom: 0.5rem;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .quiz-player:hover {
            background-color: var(--surface-hover);
        }

        .quiz-player.active {
            background-color: var(--accent);
            color: white;
        }

        .quiz-player-score {
            margin-left: auto;
            font-weight: 500;
        }

        .quiz-player.active .quiz-player-score {
            color: white;
        }

        .quiz-leaderboard {
            margin-top: 1rem;
        }

        .quiz-leaderboard-title {
            font-size: 1rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
            color: var(--accent);
        }

        .quiz-leaderboard-table {
            width: 100%;
            border-collapse: collapse;
        }

        .quiz-leaderboard-table th,
        .quiz-leaderboard-table td {
            padding: 0.5rem;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }

        .quiz-leaderboard-table th {
            font-weight: 500;
            color: var(--text-secondary);
        }

        .quiz-leaderboard-table tr:last-child td {
            border-bottom: none;
        }

        .quiz-leaderboard-table tr.winner td {
            color: var(--accent);
            font-weight: 500;
        }

        .quiz-settings {
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border);
        }

        .quiz-settings-title {
            font-size: 1rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
            color: var(--accent);
        }

        .quiz-settings-item {
            margin-bottom: 0.8rem;
        }

        .quiz-settings-item label {
            display: block;
            margin-bottom: 0.3rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .quiz-settings-item input {
            width: 100%;
            padding: 0.5rem;
            background-color: var(--darker-bg);
            border: 1px solid var(--border);
            border-radius: 4px;
            color: var(--text);
        }

        .quiz-settings-item input:focus {
            outline: none;
            border-color: var(--accent);
        }

        .quiz-add-player {
            display: flex;
            gap: 0.5rem;
            margin-top: 1rem;
        }

        .quiz-add-player input {
            flex: 1;
            padding: 0.5rem;
            background-color: var(--darker-bg);
            border: 1px solid var(--border);
            border-radius: 4px;
            color: var(--text);
        }

        .quiz-add-player input:focus {
            outline: none;
            border-color: var(--accent);
        }

        .quiz-add-player button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .quiz-add-player button:hover {
            background-color: var(--accent-light);
        }

        .quiz-game-over {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .quiz-game-over.active {
            opacity: 1;
            visibility: visible;
        }

        .quiz-game-over-content {
            background-color: var(--surface);
            border-radius: 8px;
            padding: 2rem;
            text-align: center;
            max-width: 500px;
            width: 90%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }

        .quiz-game-over-title {
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--accent);
        }

        .quiz-game-over-winner {
            font-size: 1.5rem;
            margin-bottom: 2rem;
        }

        .quiz-game-over-button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 1rem;
        }

        .quiz-game-over-button:hover {
            background-color: var(--accent-light);
        }

        .quiz-text {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 1.5rem;
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            text-align: center;
            font-size: 1.8rem;
            font-weight: 500;
            z-index: 2;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }

        .quiz-slide.show-text .quiz-text {
            transform: translateY(0);
        }

        .quiz-slide.overlay-black .quiz-text,
        .quiz-slide.overlay-white .quiz-text {
            opacity: 0;
            visibility: hidden;
        }

        .image-description {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
            line-height: 1.3;
        }

        .description-preview {
            margin-bottom: 1rem;
            text-align: center;
        }

        .description-preview img {
            max-width: 100%;
            max-height: 200px;
            object-fit: contain;
        }

        .description-form {
            margin-bottom: 1rem;
        }

        .description-form label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--text);
        }

        .description-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid var(--border);
            border-radius: 4px;
            background-color: var(--surface);
            color: var(--text);
            resize: vertical;
        }

        .description-form textarea:focus {
            outline: none;
            border-color: var(--accent);
        }

        .preview-name, .quiz-name {
            font-size: 1.8rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
        }

        .preview-description, .quiz-description {
            font-size: 1.2rem;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* Description Modal Styles */
        .description-modal {
            background-color: var(--surface);
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            width: 90%;
            max-width: 500px;
            max-height: 90vh;
            overflow: hidden;
            transform: translateY(-50px);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .description-modal-header {
            background-color: var(--darker-bg);
            padding: 1.2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border);
        }

        .description-modal-title {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--text);
        }

        .description-modal-body {
            padding: 1.5rem;
            overflow-y: auto;
        }

        .description-preview {
            margin-bottom: 1.5rem;
            text-align: center;
            background-color: var(--darker-bg);
            padding: 1rem;
            border-radius: 4px;
        }

        .description-preview img {
            max-width: 100%;
            max-height: 200px;
            object-fit: contain;
            border-radius: 4px;
        }

        .description-form {
            margin-bottom: 1rem;
        }

        .description-form label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--text);
            font-size: 0.9rem;
        }

        .description-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid var(--border);
            border-radius: 4px;
            background-color: var(--darker-bg);
            color: var(--text);
            resize: vertical;
            min-height: 100px;
            font-size: 0.9rem;
        }

        .description-form textarea:focus {
            outline: none;
            border-color: var(--accent);
        }

        .description-modal-footer {
            padding: 1rem 1.5rem;
            background-color: var(--darker-bg);
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: flex-end;
            gap: 1rem;
        }

        .description-modal-button {
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .description-modal-button.cancel {
            background-color: var(--surface);
            color: var(--text);
        }

        .description-modal-button.cancel:hover {
            background-color: var(--surface-hover);
        }

        .description-modal-button.save {
            background-color: var(--accent);
            color: white;
        }

        .description-modal-button.save:hover {
            background-color: var(--accent-light);
        }

        .back-to-dashboard {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--surface);
            color: var(--text);
            border: 1px solid var(--border);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        
        .back-to-dashboard:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 8px rgba(0, 0, 0, 0.4);
            background-color: var(--accent);
            color: white;
        }
        
        .back-to-dashboard svg {
            width: 20px;
            height: 20px;
            stroke: currentColor;
        }