* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --bg-primary: #0f0f0f;
            --bg-secondary: #1a1a1a;
            --bg-tertiary: #2f2f2f;
            --accent-primary: #e50914;
            --accent-secondary: #f5b041;
            --text-primary: #ffffff;
            --text-secondary: #b0b0b0;
            --border-color: #3a3a3a;
            --success: #2ecc71;
            --error: #e74c3c;
            --warning: #f39c12;
            --info: #3498db;
        }

        html, body {
            width: 100%;
            height: 100%;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
        }

        .container {
            display: flex;
            height: 100vh;
            width: 100%;
        }

        /* Sidebar Navigation */
        .sidebar {
            width: 280px;
            background-color: var(--bg-secondary);
            border-right: 1px solid var(--border-color);
            padding: 24px 0;
            overflow-y: auto;
            position: fixed;
            height: 100vh;
            left: 0;
            top: 0;
            z-index: 1000;
        }

        .sidebar-header {
            padding: 0 24px 32px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 24px;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent-primary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo::before {
            content: '▶';
            font-size: 20px;
        }

        .nav-menu {
            list-style: none;
        }

        .nav-item {
            margin: 0;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 24px;
            color: var(--text-secondary);
            text-decoration: none;
            cursor: pointer;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background-color: var(--bg-tertiary);
            border-left-color: var(--accent-primary);
        }

        .nav-link.active {
            color: var(--accent-primary);
            background-color: var(--bg-tertiary);
            border-left-color: var(--accent-primary);
            font-weight: 600;
        }

        .nav-link::before {
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .nav-link.dashboard::before { content: '📊'; }
        .nav-link.upload::before { content: '📤'; }
        .nav-link.library::before { content: '🎬'; }
        .nav-link.player::before { content: '▶️'; }
        .nav-link.settings::before { content: '⚙️'; }

        /* Main Content */
        .main-content {
            margin-left: 280px;
            flex: 1;
            display: flex;
            flex-direction: column;
            height: 100vh;
            overflow: hidden;
        }

        .header {
            background-color: var(--bg-secondary);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .header-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .header-actions {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .auth-status {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background-color: var(--bg-tertiary);
            border-radius: 6px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .auth-status.connected {
            color: var(--success);
        }

        .auth-status.connecting {
            color: var(--warning);
        }

        .auth-status.error {
            color: var(--error);
        }

        .content-area {
            flex: 1;
            overflow-y: auto;
            padding: 32px;
            background-color: var(--bg-primary);
        }

        /* Section Visibility */
        .section {
            display: none;
        }

        .section.active {
            display: block;
            animation: fadeIn 0.3s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Dashboard Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
            margin-bottom: 32px;
        }

        .stat-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .stat-card:hover {
            border-color: var(--accent-primary);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(229, 9, 20, 0.1);
        }

        .stat-icon {
            font-size: 32px;
            margin-bottom: 12px;
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .stat-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .stat-subtitle {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        /* Upload Section */
        .upload-container {
            background-color: var(--bg-secondary);
            border: 2px dashed var(--border-color);
            border-radius: 12px;
            padding: 48px;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
            margin-bottom: 24px;
        }

        .upload-container.dragover {
            border-color: var(--accent-primary);
            background-color: rgba(229, 9, 20, 0.05);
        }

        .upload-icon {
            font-size: 56px;
            margin-bottom: 16px;
        }

        .upload-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .upload-subtitle {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .upload-input {
            display: none;
        }

        .upload-button {
            background-color: var(--accent-primary);
            color: white;
            border: none;
            padding: 12px 32px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .upload-button:hover {
            background-color: #cc070c;
            transform: scale(1.05);
            box-shadow: 0 8px 24px rgba(229, 9, 20, 0.3);
        }

        .upload-button:active {
            transform: scale(0.98);
        }

        /* Progress Bar */
        .progress-container {
            margin-top: 24px;
            display: none;
        }

        .progress-container.visible {
            display: block;
        }

        .progress-label {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .progress-bar {
            width: 100%;
            height: 6px;
            background-color: var(--bg-tertiary);
            border-radius: 3px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            width: 0%;
            transition: width 0.3s ease;
        }

        /* Video Gallery */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 24px;
        }

        .video-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .video-card:hover {
            border-color: var(--accent-primary);
            transform: translateY(-8px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
        }

        .video-thumbnail {
            width: 100%;
            aspect-ratio: 16 / 9;
            background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 48px;
            position: relative;
            overflow: hidden;
        }

        .video-thumbnail::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(45deg, transparent 30%, rgba(229, 9, 20, 0.1) 50%, transparent 70%);
            animation: shimmer 2s infinite;
        }

        @keyframes shimmer {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100%); }
        }

        .video-info {
            padding: 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .video-title {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .video-duration {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .video-actions {
            display: flex;
            gap: 8px;
        }

        .video-action-btn {
            flex: 1;
            padding: 8px;
            border: 1px solid var(--border-color);
            background-color: var(--bg-tertiary);
            color: var(--text-primary);
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.3s ease;
        }

        .video-action-btn:hover {
            background-color: var(--accent-primary);
            border-color: var(--accent-primary);
        }

        .video-action-btn.delete {
            color: var(--error);
            border-color: var(--error);
        }

        .video-action-btn.delete:hover {
            background-color: var(--error);
            color: white;
        }

        /* Video Player */
        .player-container {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            margin-bottom: 24px;
        }

        .player-wrapper {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            background-color: #000;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 16px;
        }

        .player-wrapper video {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .player-info {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .player-detail {
            padding: 12px;
            background-color: var(--bg-tertiary);
            border-radius: 6px;
        }

        .player-detail-label {
            font-size: 12px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }

        .player-detail-value {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        /* Empty State */
        .empty-state {
            text-align: center;
            padding: 64px 24px;
        }

        .empty-state-icon {
            font-size: 64px;
            margin-bottom: 16px;
        }

        .empty-state-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .empty-state-subtitle {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* Notifications */
        .notification-container {
            position: fixed;
            top: 24px;
            right: 24px;
            z-index: 9999;
            max-width: 400px;
        }

        .notification {
            background-color: var(--bg-secondary);
            border-left: 4px solid var(--info);
            border-radius: 6px;
            padding: 16px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
            animation: slideIn 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

        @keyframes slideIn {
            from {
                transform: translateX(400px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        .notification.success {
            border-left-color: var(--success);
        }

        .notification.error {
            border-left-color: var(--error);
        }

        .notification.warning {
            border-left-color: var(--warning);
        }

        .notification-icon {
            font-size: 20px;
            flex-shrink: 0;
        }

        .notification-content {
            flex: 1;
        }

        .notification-title {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .notification-message {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .notification-close {
            cursor: pointer;
            font-size: 18px;
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }

        .notification-close:hover {
            color: var(--text-primary);
        }

        /* Loading Spinner */
        .spinner {
            display: inline-block;
            width: 16px;
            height: 16px;
            border: 2px solid var(--border-color);
            border-top-color: var(--accent-primary);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }

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

        /* Skeleton Loader */
        .skeleton {
            background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
            background-size: 200% 100%;
            animation: loading 1.5s infinite;
        }

        @keyframes loading {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.3s ease;
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
            }

            .gallery-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                width: 100%;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .player-info {
                grid-template-columns: 1fr;
            }

            .header {
                padding: 12px 16px;
            }

            .content-area {
                padding: 16px;
            }

            .upload-container {
                padding: 32px;
            }

            .gallery-grid {
                grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            }
        }

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

        ::-webkit-scrollbar-track {
            background: var(--bg-secondary);
        }

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

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

        /* Focus Styles */
        button:focus,
        input:focus {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

        /* Modal Styles */
        .modal {
            display: none;
            position: fixed;
            inset: 0;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 2000;
            align-items: center;
            justify-content: center;
        }

        .modal.visible {
            display: flex;
        }

        .modal-content {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 32px;
            max-width: 500px;
            width: 90%;
            animation: modalAppear 0.3s ease;
        }

        @keyframes modalAppear {
            from {
                transform: scale(0.9);
                opacity: 0;
            }
            to {
                transform: scale(1);
                opacity: 1;
            }
        }

        .modal-header {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .modal-body {
            margin-bottom: 24px;
            color: var(--text-secondary);
        }

        .modal-footer {
            display: flex;
            gap: 12px;
            justify-content: flex-end;
        }

        .modal-button {
            padding: 10px 20px;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

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

        .modal-button.primary:hover {
            background-color: #cc070c;
        }

        .modal-button.secondary {
            background-color: var(--bg-tertiary);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }

        .modal-button.secondary:hover {
            background-color: var(--border-color);
        }

        /* Form Inputs */
        input[type="text"],
        input[type="number"],
        textarea {
            width: 100%;
            padding: 12px;
            background-color: var(--bg-tertiary);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            color: var(--text-primary);
            font-family: inherit;
            font-size: 14px;
            margin-bottom: 16px;
            transition: all 0.3s ease;
        }

        input[type="text"]:focus,
        input[type="number"]:focus,
        textarea:focus {
            background-color: var(--bg-secondary);
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 3px rgba(229, 9, 20, 0.1);
        }

        textarea {
            resize: vertical;
            min-height: 100px;
        }

        /* Label */
        label {
            display: block;
            margin-bottom: 8px;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--text-secondary);
        }

        /* Badge */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            background-color: var(--bg-tertiary);
            color: var(--text-secondary);
        }

        .badge.processing {
            background-color: rgba(243, 156, 18, 0.2);
            color: var(--warning);
        }

        .badge.ready {
            background-color: rgba(46, 204, 113, 0.2);
            color: var(--success);
        }