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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Advanced File Finder Pro</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
        
        body {
            font-family: 'Inter', sans-serif;
        }
        
        .file-icon {
            color: #6366f1;
        }
        .folder-icon {
            color: #f59e0b;
        }
        .sort-active {
            background-color: #e0e7ff;
        }
        .file-row:hover {
            background-color: #f8fafc;
            transform: translateY(-1px);
        }
        .sidebar-item:hover {
            background-color: #f1f5f9;
        }
        .transition-all {
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-shadow {
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
        }
        .modal-shadow {
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        .glow {
            animation: glow 2s infinite alternate;
        }
        @keyframes glow {
            from {
                box-shadow: 0 0 0px 0px rgba(99, 102, 241, 0.3);
            }
            to {
                box-shadow: 0 0 8px 2px rgba(99, 102, 241, 0.3);
            }
        }
        .highlight {
            background: linear-gradient(90deg, rgba(224,231,255,0) 0%, rgba(224,231,255,0.5) 50%, rgba(224,231,255,0) 100%);
        }
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f5f9;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #94a3b8;
        }
        .modal-enter-active, .modal-leave-active {
            transition: opacity 0.3s ease;
        }
        .modal-enter-from, .modal-leave-to {
            opacity: 0;
        }
        .toast {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: #4f46e5;
            color: white;
            padding: 12px 24px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            transform: translateY(100px);
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .toast.show {
            transform: translateY(0);
            opacity: 1;
        }
        .context-menu {
            position: absolute;
            background: white;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            z-index: 100;
            min-width: 200px;
            overflow: hidden;
            display: none;
        }
        .context-menu-item {
            padding: 8px 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .context-menu-item:hover {
            background: #f1f5f9;
        }
        .breadcrumb-item {
            display: flex;
            align-items: center;
            gap: 4px;
            cursor: pointer;
        }
        .breadcrumb-item:hover {
            color: #4f46e5;
        }
        .breadcrumb-separator {
            margin: 0 4px;
            color: #94a3b8;
        }
    </style>
</head>
<body class="bg-slate-50">
    <div id="app" class="flex h-screen">
        <!-- Sidebar -->
        <div class="w-64 bg-white border-r border-slate-200 flex flex-col">
            <div class="p-5 border-b border-slate-200">
                <div class="flex items-center space-x-3 mb-6">
                    <div class="w-9 h-9 rounded-lg bg-indigo-100 flex items-center justify-center">
                        <i class="fas fa-search text-indigo-500"></i>
                    </div>
                    <h1 class="text-xl font-semibold text-slate-800">Advanced Finder Pro</h1>
                </div>
                <div class="relative">
                    <input 
                        type="text" 
                        id="sidebarSearch" 
                        placeholder="Search locations..." 
                        class="w-full px-4 py-2.5 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent placeholder-slate-400"
                    >
                    <i class="fas fa-search absolute right-3 top-3 text-slate-400"></i>
                </div>
            </div>
            <div class="flex-1 overflow-y-auto">
                <div id="sidebarLocations" class="p-2">
                    <!-- Locations will be populated here -->
                </div>
            </div>
            <div class="p-4 border-t border-slate-200 text-xs text-slate-500 bg-slate-50">
                <div class="flex items-center mb-1">
                    <i class="fas fa-database mr-2"></i>
                    <span>Indexed: <span id="indexedCount">2847</span> items</span>
                </div>
                <div class="flex items-center">
                    <i class="fas fa-sync-alt mr-2"></i>
                    <span>Last indexed: <span id="lastIndexed">5 minutes ago</span></span>
                </div>
            </div>
        </div>

        <!-- Main Content -->
        <div class="flex-1 flex flex-col overflow-hidden">
            <!-- Toolbar -->
            <div class="bg-white border-b border-slate-200 p-4 flex items-center justify-between">
                <div class="flex items-center space-x-2">
                    <button 
                        id="backBtn"
                        class="px-3 py-2 bg-white border border-slate-200 rounded-lg hover:bg-slate-50 flex items-center transition-all focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                        title="Go back"
                    >
                        <i class="fas fa-arrow-left mr-2"></i>
                    </button>
                    <button 
                        id="refreshBtn"
                        class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 flex items-center transition-all focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                        title="Refresh"
                    >
                        <i class="fas fa-sync-alt mr-2"></i> Refresh
                    </button>
                    <button 
                        id="indexBtn"
                        class="px-4 py-2 bg-white border border-slate-200 rounded-lg hover:bg-slate-50 flex items-center transition-all focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                        title="Reindex files"
                    >
                        <i class="fas fa-database mr-2"></i> 
                        <span id="indexBtnText">Index Now</span>
                    </button>
                    <div class="relative" id="deleteBtnContainer" style="display: none;">
                        <button 
                            id="deleteBtn"
                            class="px-4 py-2 bg-red-50 text-red-600 rounded-lg hover:bg-red-100 flex items-center transition-all focus:outline-none focus:ring-2 focus:ring-red-500 focus:ring-offset-2"
                            title="Delete selected files"
                        >
                            <i class="fas fa-trash mr-2"></i> Delete (<span id="selectedCount">0</span>)
                        </button>
                    </div>
                </div>
                <div class="flex items-center space-x-3">
                    <div class="relative">
                        <input 
                            type="text" 
                            id="searchQuery" 
                            placeholder="Search files..." 
                            class="px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent w-64 placeholder-slate-400"
                        >
                        <i class="fas fa-search absolute right-3 top-3 text-slate-400"></i>
                    </div>
                    <button 
                        id="filtersBtn"
                        class="px-4 py-2 bg-white border border-slate-200 rounded-lg hover:bg-slate-50 flex items-center transition-all focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                        title="Show filters"
                    >
                        <i class="fas fa-sliders-h mr-2"></i> Filters
                    </button>
                    <button 
                        id="newBtn"
                        class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 flex items-center transition-all focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                        title="Create new"
                    >
                        <i class="fas fa-plus mr-2"></i> New
                    </button>
                </div>
            </div>

            <!-- Breadcrumbs -->
            <div id="breadcrumbs" class="bg-white border-b border-slate-200 px-5 py-2 flex items-center text-sm">
                <!-- Breadcrumbs will be populated here -->
            </div>

            <!-- Advanced Search Panel -->
            <div 
                id="advancedSearchPanel"
                class="bg-white border-b border-slate-200 px-5 py-4 transition-all duration-300 ease-in-out overflow-hidden"
                style="max-height: 0;"
            >
                <div class="grid grid-cols-1 md:grid-cols-3 gap-5">
                    <div>
                        <label class="block text-sm font-medium text-slate-700 mb-2">File Type</label>
                        <select 
                            id="fileTypeFilter" 
                            class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
                        >
                            <option value="all">All Files</option>
                            <option value="documents">Documents</option>
                            <option value="images">Images</option>
                            <option value="audio">Audio</option>
                            <option value="video">Video</option>
                            <option value="archives">Archives</option>
                            <option value="folders">Folders</option>
                        </select>
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-slate-700 mb-2">Author/Creator</label>
                        <input 
                            type="text" 
                            id="authorFilter" 
                            placeholder="Search by author..." 
                            class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent placeholder-slate-400"
                        >
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-slate-700 mb-2">Size Range</label>
                        <div class="flex items-center space-x-3">
                            <input 
                                type="number" 
                                id="sizeMinFilter" 
                                placeholder="Min (KB)" 
                                class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent placeholder-slate-400"
                            >
                            <span class="text-sm text-slate-400">to</span>
                            <input 
                                type="number" 
                                id="sizeMaxFilter" 
                                placeholder="Max (KB)" 
                                class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent placeholder-slate-400"
                            >
                        </div>
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-slate-700 mb-2">Date Modified</label>
                        <select 
                            id="dateRangeFilter" 
                            class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
                        >
                            <option value="all">Any Time</option>
                            <option value="today">Today</option>
                            <option value="week">This Week</option>
                            <option value="month">This Month</option>
                            <option value="year">This Year</option>
                            <option value="custom">Custom Range</option>
                        </select>
                    </div>
                    <div id="customDateRangeContainer" style="display: none;" class="md:col-span-3">
                        <div class="grid grid-cols-1 md:grid-cols-2 gap-5">
                            <div>
                                <label class="block text-sm font-medium text-slate-700 mb-2">From</label>
                                <input 
                                    type="date" 
                                    id="dateFromFilter" 
                                    class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
                                >
                            </div>
                            <div>
                                <label class="block text-sm font-medium text-slate-700 mb-2">To</label>
                                <input 
                                    type="date" 
                                    id="dateToFilter" 
                                    class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
                                >
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <!-- File Table Header -->
            <div class="bg-white border-b border-slate-200 px-5 py-3">
                <div class="grid grid-cols-12 gap-4 text-xs font-medium text-slate-500 uppercase tracking-wider">
                    <div class="col-span-5 flex items-center">
                        <input 
                            type="checkbox" 
                            id="selectAllCheckbox"
                            class="mr-3 h-4 w-4 text-indigo-600 rounded border-slate-300 focus:ring-indigo-500"
                        >
                        <span 
                            id="sortByName"
                            class="cursor-pointer flex items-center hover:text-slate-700 transition-colors"
                        >
                            Name
                            <i id="nameSortIcon" class="fas ml-1 fa-sort"></i>
                        </span>
                    </div>
                    <div 
                        id="sortByAuthor"
                        class="col-span-2 cursor-pointer flex items-center hover:text-slate-700 transition-colors"
                    >
                        <span>Author</span>
                        <i id="authorSortIcon" class="fas ml-1 fa-sort"></i>
                    </div>
                    <div 
                        id="sortByType"
                        class="col-span-2 cursor-pointer flex items-center hover:text-slate-700 transition-colors"
                    >
                        <span>Type</span>
                        <i id="typeSortIcon" class="fas ml-1 fa-sort"></i>
                    </div>
                    <div 
                        id="sortBySize"
                        class="col-span-2 cursor-pointer flex items-center justify-end hover:text-slate-700 transition-colors"
                    >
                        <span>Size</span>
                        <i id="sizeSortIcon" class="fas ml-1 fa-sort"></i>
                    </div>
                    <div 
                        id="sortByModified"
                        class="col-span-1 cursor-pointer flex items-center justify-end hover:text-slate-700 transition-colors"
                    >
                        <span>Modified</span>
                        <i id="modifiedSortIcon" class="fas ml-1 fa-sort"></i>
                    </div>
                </div>
            </div>

            <!-- File List -->
            <div id="fileList" class="flex-1 overflow-y-auto bg-white">
                <div class="flex flex-col items-center justify-center h-64 text-slate-400">
                    <i class="fas fa-folder-open text-5xl mb-4 opacity-30"></i>
                    <p class="text-lg font-medium text-slate-500">Loading files...</p>
                </div>
            </div>

            <!-- Status Bar -->
            <div class="bg-slate-50 border-t border-slate-200 px-5 py-2.5 text-xs text-slate-500 flex justify-between">
                <div>
                    <span id="statusCount">0 items</span>
                </div>
                <div class="flex items-center space-x-5">
                    <div class="flex items-center">
                        <span class="mr-2">Index status:</span>
                        <span id="indexStatus" class="text-slate-400">Idle</span>
                    </div>
                    <div class="flex items-center">
                        <i id="performanceIcon" class="fas fa-circle text-xs mr-1.5 text-emerald-500"></i>
                        <span id="performanceText">fast performance</span>
                    </div>
                </div>
            </div>
        </div>

        <!-- Context Menu -->
        <div id="contextMenu" class="context-menu">
            <div class="context-menu-item" id="contextOpen">
                <i class="fas fa-folder-open"></i> Open
            </div>
            <div class="context-menu-item" id="contextDownload">
                <i class="fas fa-download"></i> Download
            </div>
            <div class="context-menu-item" id="contextRename">
                <i class="fas fa-pen"></i> Rename
            </div>
            <div class="context-menu-item" id="contextFavorite">
                <i class="fas fa-star"></i> Add to Favorites
            </div>
            <div class="border-t border-slate-200"></div>
            <div class="context-menu-item" id="contextDelete">
                <i class="fas fa-trash text-red-500"></i> <span class="text-red-500">Delete</span>
            </div>
        </div>

        <!-- Delete Confirmation Modal -->
        <div id="deleteModal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50 backdrop-blur-sm">
            <div class="bg-white rounded-xl modal-shadow p-6 w-96">
                <div class="flex items-start mb-5">
                    <div class="flex-shrink-0 mt-1">
                        <div class="w-10 h-10 rounded-full bg-red-100 flex items-center justify-center">
                            <i class="fas fa-exclamation-triangle text-red-500"></i>
                        </div>
                    </div>
                    <div class="ml-4">
                        <h3 class="text-lg font-medium text-slate-800">Delete Files</h3>
                        <p class="mt-1 text-sm text-slate-500">
                            Are you sure you want to delete <span id="deleteCount">0</span> file(s)? This action cannot be undone.
                        </p>
                    </div>
                </div>
                <div class="mt-6 flex justify-end space-x-3">
                    <button 
                        id="cancelDeleteBtn"
                        type="button" 
                        class="px-4 py-2 bg-white border border-slate-200 rounded-lg text-slate-700 hover:bg-slate-50 transition-colors focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                    >
                        Cancel
                    </button>
                    <button 
                        id="confirmDeleteBtn"
                        type="button" 
                        class="px-4 py-2 bg-red-600 text-white rounded-lg hover:bg-red-700 transition-colors focus:outline-none focus:ring-2 focus:ring-red-500 focus:ring-offset-2"
                    >
                        Delete
                    </button>
                </div>
            </div>
        </div>

        <!-- New File/Folder Modal -->
        <div id="newModal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50 backdrop-blur-sm">
            <div class="bg-white rounded-xl modal-shadow p-6 w-96">
                <div class="flex items-start mb-5">
                    <div class="flex-shrink-0 mt-1">
                        <div class="w-10 h-10 rounded-full bg-indigo-100 flex items-center justify-center">
                            <i class="fas fa-plus text-indigo-500"></i>
                        </div>
                    </div>
                    <div class="ml-4">
                        <h3 class="text-lg font-medium text-slate-800">Create New</h3>
                        <p class="mt-1 text-sm text-slate-500">
                            Create a new file or folder in the current location.
                        </p>
                    </div>
                </div>
                <div class="mt-4">
                    <div class="flex items-center space-x-2 mb-4">
                        <button id="newFileBtn" class="flex-1 px-4 py-3 border border-slate-200 rounded-lg hover:bg-slate-50 flex flex-col items-center">
                            <i class="fas fa-file text-indigo-500 text-xl mb-2"></i>
                            <span>File</span>
                        </button>
                        <button id="newFolderBtn" class="flex-1 px-4 py-3 border border-slate-200 rounded-lg hover:bg-slate-50 flex flex-col items-center">
                            <i class="fas fa-folder text-amber-500 text-xl mb-2"></i>
                            <span>Folder</span>
                        </button>
                    </div>
                    <div id="newFormContainer" style="display: none;">
                        <div class="mb-4">
                            <label class="block text-sm font-medium text-slate-700 mb-1">Name</label>
                            <input 
                                type="text" 
                                id="newNameInput" 
                                placeholder="Enter name..." 
                                class="w-full px-4 py-2 text-sm border border-slate-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent placeholder-slate-400"
                            >
                        </div>
                        <div class="flex justify-end space-x-3">
                            <button 
                                id="cancelNewBtn"
                                type="button" 
                                class="px-4 py-2 bg-white border border-slate-200 rounded-lg text-slate-700 hover:bg-slate-50 transition-colors focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                            >
                                Cancel
                            </button>
                            <button 
                                id="confirmNewBtn"
                                type="button" 
                                class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 transition-colors focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
                            >
                                Create
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Toast Notification -->
        <div id="toast" class="toast">
            <div class="flex items-center">
                <i id="toastIcon" class="fas fa-check-circle mr-2"></i>
                <span id="toastMessage">Operation completed successfully</span>
            </div>
        </div>
    </div>

    <script>
        // Enhanced application state
        const state = {
            sidebarSearch: '',
            currentLocation: { id: 1, name: 'Home', icon: 'fas fa-home', path: [] },
            indexedCount: 2847,
            lastIndexed: '5 minutes ago',
            
            searchQuery: '',
            showAdvancedSearch: false,
            isIndexing: false,
            
            activeSort: 'name',
            sortDirection: 'asc',
            
            selectedFiles: [],
            showDeleteConfirm: false,
            contextMenuFile: null,
            
            filters: {
                fileType: 'all',
                author: '',
                sizeMin: '',
                sizeMax: '',
                dateRange: 'all',
                dateFrom: '',
                dateTo: ''
            },
            
            performanceRating: 'fast',
            newItemType: 'file',
            
            locations: [
                { id: 1, name: 'Home', icon: 'fas fa-home', path: [] },
                { id: 2, name: 'Documents', icon: 'fas fa-folder', path: ['Home'] },
                { id: 3, name: 'Downloads', icon: 'fas fa-download', path: ['Home'] },
                { id: 4, name: 'Pictures', icon: 'fas fa-image', path: ['Home'] },
                { id: 5, name: 'Music', icon: 'fas fa-music', path: ['Home'] },
                { id: 6, name: 'Videos', icon: 'fas fa-video', path: ['Home'] },
                { id: 7, name: 'Desktop', icon: 'fas fa-desktop', path: ['Home'] }
            ],
            
            files: [
                { id: 1, name: 'Project Proposal.pdf', path: ['Home', 'Documents', 'Projects'], author: 'John Doe', type: 'PDF Document', size: 2456, modified: '2023-06-15T14:30:00', isFavorite: false },
                { id: 2, name: 'Budget 2023.xlsx', path: ['Home', 'Documents', 'Finance'], author: 'Jane Smith', type: 'Excel Spreadsheet', size: 4532, modified: '2023-05-22T09:45:00', isFavorite: true },
                { id: 3, name: 'Team Photo.jpg', path: ['Home', 'Pictures', 'Work'], author: 'Mike Johnson', type: 'JPEG Image', size: 3245, modified: '2023-06-10T11:20:00', isFavorite: false },
                { id: 4, name: 'Meeting Notes.docx', path: ['Home', 'Documents', 'Meetings'], author: 'Sarah Wilson', type: 'Word Document', size: 876, modified: '2023-06-14T16:10:00', isFavorite: false },
                { id: 5, name: 'Presentation.pptx', path: ['Home', 'Documents', 'Presentations'], author: 'David Brown', type: 'PowerPoint', size: 6543, modified: '2023-06-12T13:30:00', isFavorite: false },
                { id: 6, name: 'Project Backup.zip', path: ['Home', 'Downloads'], author: 'Emma Davis', type: 'ZIP Archive', size: 24567, modified: '2023-06-09T18:05:00', isFavorite: false },
                { id: 7, name: 'Interview.mp3', path: ['Home', 'Music', 'Recordings'], author: 'James Miller', type: 'MP3 Audio', size: 12345, modified: '2023-05-30T10:15:00', isFavorite: false },
                { id: 8, name: 'Tutorial.mp4', path: ['Home', 'Videos', 'Learning'], author: 'Olivia Wilson', type: 'MP4 Video', size: 45678, modified: '2023-05-28T14:20:00', isFavorite: false },
                { id: 9, name: 'Configuration.ini', path: ['Home', 'System'], author: 'System', type: 'Configuration File', size: 23, modified: '2023-06-13T12:40:00', isFavorite: false },
                { id: 10, name: 'Code Repository', path: ['Home', 'Documents', 'Projects'], author: 'John Doe', type: 'Folder', size: 10245, modified: '2023-06-05T08:30:00', isFavorite: true }
            ],
            
            locationHistory: [],
            historyIndex: -1
        };

        // Helper functions
        function formatFileSize(bytes) {
            if (bytes === 0) return '0 Bytes';
            if (typeof bytes === 'string') bytes = parseInt(bytes);
            
            const k = 1024;
            const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
            const i = Math.floor(Math.log(bytes) / Math.log(k));
            
            return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
        }

        function formatDate(dateString) {
            const date = new Date(dateString);
            return date.toLocaleDateString('en-US', {month: 'short', day: 'numeric'});
        }

        function formatTime(dateString) {
            const date = new Date(dateString);
            return date.toLocaleTimeString('en-US', {hour: '2-digit', minute: '2-digit'});
        }

        function getFileIcon(file) {
            if (file.type === 'Folder') return 'fas fa-folder folder-icon';
            
            const extension = file.name.split('.').pop().toLowerCase();
            const iconMap = {
                'pdf': 'fas fa-file-pdf file-icon',
                'docx': 'fas fa-file-word file-icon',
                'xlsx': 'fas fa-file-excel file-icon',
                'pptx': 'fas fa-file-powerpoint file-icon',
                'jpg': 'fas fa-file-image file-icon',
                'jpeg': 'fas fa-file-image file-icon',
                'png': 'fas fa-file-image file-icon',
                'gif': 'fas fa-file-image file-icon',
                'mp3': 'fas fa-file-audio file-icon',
                'wav': 'fas fa-file-audio file-icon',
                'mp4': 'fas fa-file-video file-icon',
                'mov': 'fas fa-file-video file-icon',
                'zip': 'fas fa-file-archive file-icon',
                'rar': 'fas fa-file-archive file-icon',
                'ini': 'fas fa-file-code file-icon'
            };
            
            return iconMap[extension] || 'fas fa-file file-icon';
        }

        function showToast(message, type = 'success') {
            const toast = document.getElementById('toast');
            const toastIcon = document.getElementById('toastIcon');
            const toastMessage = document.getElementById('toastMessage');
            
            // Set icon and color based on type
            if (type === 'success') {
                toastIcon.className = 'fas fa-check-circle mr-2';
                toast.style.backgroundColor = '#4f46e5';
            } else if (type === 'error') {
                toastIcon.className = 'fas fa-exclamation-circle mr-2';
                toast.style.backgroundColor = '#ef4444';
            } else if (type === 'warning') {
                toastIcon.className = 'fas fa-exclamation-triangle mr-2';
                toast.style.backgroundColor = '#f59e0b';
            } else if (type === 'info') {
                toastIcon.className = 'fas fa-info-circle mr-2';
                toast.style.backgroundColor = '#3b82f6';
            }
            
            toastMessage.textContent = message;
            toast.classList.add('show');
            
            // Hide after 3 seconds
            setTimeout(() => {
                toast.classList.remove('show');
            }, 3000);
        }

        function filterFiles() {
            let files = [...state.files];
            const filters = state.filters;
            const search = state.searchQuery.toLowerCase();
            
            // Filter by current location
            files = files.filter(file => 
                JSON.stringify(file.path) === JSON.stringify(state.currentLocation.path)
            );
            
            if (search) {
                files = files.filter(file => 
                    file.name.toLowerCase().includes(search) || 
                    file.type.toLowerCase().includes(search) ||
                    (file.author && file.author.toLowerCase().includes(search))
                );
            }
            
            if (filters.fileType !== 'all') {
                const typeMap = {
                    'documents': ['PDF Document', 'Word Document', 'Excel Spreadsheet', 'PowerPoint'],
                    'images': ['JPEG Image', 'PNG Image', 'GIF Image'],
                    'audio': ['MP3 Audio', 'WAV Audio'],
                    'video': ['MP4 Video', 'MOV Video'],
                    'archives': ['ZIP Archive', 'RAR Archive'],
                    'folders': ['Folder']
                };
                
                const types = typeMap[filters.fileType] || [];
                files = files.filter(file => 
                    types.includes(file.type) || 
                    (filters.fileType === 'documents' && file.type.includes('Document'))
                );
            }
            
            if (filters.author) {
                const authorSearch = filters.author.toLowerCase();
                files = files.filter(file => 
                    file.author && file.author.toLowerCase().includes(authorSearch)
                );
            }
            
            if (filters.sizeMin || filters.sizeMax) {
                const min = filters.sizeMin ? parseInt(filters.sizeMin) : 0;
                const max = filters.sizeMax ? parseInt(filters.sizeMax) : Infinity;
                
                files = files.filter(file => file.size >= min && file.size <= max);
            }
            
            if (filters.dateRange && filters.dateRange !== 'all') {
                const now = new Date();
                let fromDate = new Date();
                
                switch (filters.dateRange) {
                    case 'today':
                        fromDate.setHours(0, 0, 0, 0);
                        break;
                    case 'week':
                        fromDate.setDate(fromDate.getDate() - 7);
                        break;
                    case 'month':
                        fromDate.setMonth(fromDate.getMonth() - 1);
                        break;
                    case 'year':
                        fromDate.setFullYear(fromDate.getFullYear() - 1);
                        break;
                    case 'custom':
                        if (filters.dateFrom) {
                            fromDate = new Date(filters.dateFrom);
                        }
                        break;
                }
                
                files = files.filter(file => {
                    const fileDate = new Date(file.modified);
                    return fileDate >= fromDate;
                });
                
                if (filters.dateRange === 'custom' && filters.dateTo) {
                    const toDate = new Date(filters.dateTo);
                    toDate.setHours(23, 59, 59, 999);
                    
                    files = files.filter(file => {
                        const fileDate = new Date(file.modified);
                        return fileDate <= toDate;
                    });
                }
            }
            
            return sortFiles(files);
        }

        function sortFiles(files) {
            const activeSort = state.activeSort;
            const sortDirection = state.sortDirection;
            
            return files.sort((a, b) => {
                let aVal, bVal;
                
                switch (activeSort) {
                    case 'name':
                        aVal = a.name.toLowerCase();
                        bVal = b.name.toLowerCase();
                        break;
                    case 'author':
                        aVal = a.author ? a.author.toLowerCase() : '';
                        bVal = b.author ? b.author.toLowerCase() : '';
                        break;
                    case 'type':
                        aVal = a.type.toLowerCase();
                        bVal = b.type.toLowerCase();
                        break;
                    case 'size':
                        aVal = a.size;
                        bVal = b.size;
                        break;
                    case 'modified':
                        aVal = new Date(a.modified);
                        bVal = new Date(b.modified);
                        break;
                    default:
                        aVal = a.name.toLowerCase();
                        bVal = b.name.toLowerCase();
                }
                
                if (aVal < bVal) return sortDirection === 'asc' ? -1 : 1;
                if (aVal > bVal) return sortDirection === 'asc' ? 1 : -1;
                return 0;
            });
        }

        function filterLocations() {
            const search = state.sidebarSearch.toLowerCase();
            return state.locations.filter(loc => 
                loc.name.toLowerCase().includes(search)
            );
        }

        function updateBreadcrumbs() {
            const breadcrumbs = document.getElementById('breadcrumbs');
            breadcrumbs.innerHTML = '';
            
            // Add home breadcrumb
            const homeCrumb = document.createElement('div');
            homeCrumb.className = 'breadcrumb-item';
            homeCrumb.innerHTML = `
                <i class="fas fa-home"></i>
                <span>Home</span>
            `;
            homeCrumb.addEventListener('click', () => {
                const homeLocation = state.locations.find(loc => loc.id === 1);
                selectLocation(homeLocation);
            });
            breadcrumbs.appendChild(homeCrumb);
            
            // Add path breadcrumbs
            state.currentLocation.path.forEach((pathItem, index) => {
                const separator = document.createElement('div');
                separator.className = 'breadcrumb-separator';
                separator.innerHTML = '<i class="fas fa-chevron-right"></i>';
                breadcrumbs.appendChild(separator);
                
                const crumb = document.createElement('div');
                crumb.className = 'breadcrumb-item';
                crumb.textContent = pathItem;
                crumb.addEventListener('click', () => {
                    // Find the location that matches this path
                    const targetPath = state.currentLocation.path.slice(0, index + 1);
                    const targetLocation = state.locations.find(loc => 
                        loc.name === pathItem && JSON.stringify(loc.path) === JSON.stringify(targetPath.slice(0, -1))
                    );
                    
                    if (targetLocation) {
                        selectLocation(targetLocation);
                    }
                });
                breadcrumbs.appendChild(crumb);
            });
            
            // Add current location if it's not home
            if (state.currentLocation.id !== 1) {
                const separator = document.createElement('div');
                separator.className = 'breadcrumb-separator';
                separator.innerHTML = '<i class="fas fa-chevron-right"></i>';
                breadcrumbs.appendChild(separator);
                
                const currentCrumb = document.createElement('div');
                currentCrumb.className = 'breadcrumb-item font-medium text-indigo-600';
                currentCrumb.textContent = state.currentLocation.name;
                breadcrumbs.appendChild(currentCrumb);
            }
        }

        // UI update functions
        function updateSidebar() {
            const sidebarLocations = document.getElementById('sidebarLocations');
            const filteredLocations = filterLocations();
            
            sidebarLocations.innerHTML = '';
            
            filteredLocations.forEach(location => {
                const locationEl = document.createElement('div');
                locationEl.className = `sidebar-item px-3 py-2.5 rounded-lg cursor-pointer flex items-center transition-all group ${
                    state.currentLocation.id === location.id ? 'bg-indigo-50' : ''
                }`;
                locationEl.innerHTML = `
                    <div class="w-8 h-8 rounded-md flex items-center justify-center mr-2 ${
                        state.currentLocation.id === location.id ? 'bg-indigo-100' : 'bg-slate-100 group-hover:bg-slate-200'
                    }">
                        <i class="${location.icon} text-slate-600 group-hover:text-slate-800 ${
                            state.currentLocation.id === location.id ? 'text-indigo-500' : ''
                        }"></i>
                    </div>
                    <span class="text-sm font-medium truncate ${
                        state.currentLocation.id === location.id ? 'text-indigo-600' : 'text-slate-700 group-hover:text-slate-900'
                    }">
                        ${location.name}
                    </span>
                `;
                locationEl.addEventListener('click', () => selectLocation(location));
                sidebarLocations.appendChild(locationEl);
            });
        }

        function updateFileList() {
            const fileList = document.getElementById('fileList');
            const filteredFiles = filterFiles();
            
            if (filteredFiles.length === 0) {
                fileList.innerHTML = `
                    <div class="flex flex-col items-center justify-center h-64 text-slate-400">
                        <i class="fas fa-folder-open text-5xl mb-4 opacity-30"></i>
                        <p class="text-lg font-medium text-slate-500">No files found</p>
                        <p class="text-sm mt-1 text-slate-400">Try adjusting your search or filters</p>
                    </div>
                `;
            } else {
                fileList.innerHTML = '';
                
                filteredFiles.forEach(file => {
                    const fileEl = document.createElement('div');
                    fileEl.className = `file-row px-5 py-3 border-b border-slate-100 grid grid-cols-12 gap-4 text-sm items-center transition-all ${
                        state.selectedFiles.includes(file) ? 'highlight' : ''
                    }`;
                    fileEl.innerHTML = `
                        <div class="col-span-5 flex items-center truncate">
                            <input 
                                type="checkbox" 
                                class="mr-3 h-4 w-4 text-indigo-600 rounded border-slate-300 focus:ring-indigo-500"
                                ${state.selectedFiles.includes(file) ? 'checked' : ''}
                                data-file-id="${file.id}"
                            >
                            <div class="w-8 h-8 rounded-md flex items-center justify-center mr-2 ${
                                state.selectedFiles.includes(file) ? 'bg-indigo-50' : 'bg-slate-100'
                            }">
                                <i class="${getFileIcon(file)} text-slate-600"></i>
                            </div>
                            <div class="truncate">
                                <div class="font-medium text-slate-800 truncate">${file.name}</div>
                                <div class="text-xs text-slate-500 truncate">${formatTime(file.modified)}</div>
                            </div>
                            ${file.isFavorite ? '<i class="fas fa-star text-yellow-400 ml-2 text-xs"></i>' : ''}
                        </div>
                        <div class="col-span-2 text-slate-600 truncate">
                            <span class="inline-flex items-center">
                                <i class="fas fa-user-circle mr-2 text-slate-400"></i>
                                ${file.author || 'Unknown'}
                            </span>
                        </div>
                        <div class="col-span-2 text-slate-600 truncate text-sm">${file.type}</div>
                        <div class="col-span-2 text-slate-600 text-right text-sm">${formatFileSize(file.size)}</div>
                        <div class="col-span-1 text-slate-600 text-right text-sm">${formatDate(file.modified)}</div>
                    `;
                    
                    // Add event listeners
                    const checkbox = fileEl.querySelector('input[type="checkbox"]');
                    checkbox.addEventListener('change', (e) => toggleFileSelection(file, e));
                    
                    fileEl.addEventListener('dblclick', () => openFile(file));
                    
                    // Add context menu
                    fileEl.addEventListener('contextmenu', (e) => {
                        e.preventDefault();
                        showContextMenu(file, e.clientX, e.clientY);
                    });
                    
                    fileList.appendChild(fileEl);
                });
            }
            
            // Update status bar
            document.getElementById('statusCount').textContent = 
                state.selectedFiles.length > 0 ? 
                `${state.selectedFiles.length} selected of ${filteredFiles.length} items` : 
                `${filteredFiles.length} items`;
        }

        function showContextMenu(file, x, y) {
            const contextMenu = document.getElementById('contextMenu');
            state.contextMenuFile = file;
            
            // Update context menu items based on file type
            const favoriteItem = document.getElementById('contextFavorite');
            if (file.isFavorite) {
                favoriteItem.innerHTML = '<i class="fas fa-star"></i> Remove from Favorites';
            } else {
                favoriteItem.innerHTML = '<i class="fas fa-star"></i> Add to Favorites';
            }
            
            // Position the menu
            contextMenu.style.left = `${x}px`;
            contextMenu.style.top = `${y}px`;
            contextMenu.style.display = 'block';
            
            // Close menu when clicking elsewhere
            const closeMenu = () => {
                contextMenu.style.display = 'none';
                document.removeEventListener('click', closeMenu);
            };
            
            setTimeout(() => {
                document.addEventListener('click', closeMenu);
            }, 100);
        }

        function updateSortIcons() {
            // Reset all icons
            document.getElementById('nameSortIcon').className = 'fas ml-1 fa-sort';
            document.getElementById('authorSortIcon').className = 'fas ml-1 fa-sort';
            document.getElementById('typeSortIcon').className = 'fas ml-1 fa-sort';
            document.getElementById('sizeSortIcon').className = 'fas ml-1 fa-sort';
            document.getElementById('modifiedSortIcon').className = 'fas ml-1 fa-sort';
            
            // Set active sort icon
            const activeIcon = document.getElementById(`${state.activeSort}SortIcon`);
            if (activeIcon) {
                activeIcon.className = `fas ml-1 fa-sort-${state.sortDirection === 'asc' ? 'up' : 'down'}`;
            }
        }

        function updateDeleteButton() {
            const deleteBtnContainer = document.getElementById('deleteBtnContainer');
            const selectedCount = document.getElementById('selectedCount');
            
            if (state.selectedFiles.length > 0) {
                deleteBtnContainer.style.display = 'block';
                selectedCount.textContent = state.selectedFiles.length;
            } else {
                deleteBtnContainer.style.display = 'none';
            }
        }

        function updateSelectAllCheckbox() {
            const selectAllCheckbox = document.getElementById('selectAllCheckbox');
            const filteredFiles = filterFiles();
            
            selectAllCheckbox.checked = 
                state.selectedFiles.length === filteredFiles.length && 
                filteredFiles.length > 0;
        }

        // Core functions
        function selectLocation(location) {
            // Add to history
            if (state.historyIndex === -1 || 
                JSON.stringify(state.locationHistory[state.historyIndex]) !== JSON.stringify(location)) {
                
                // If we're not at the end of history, truncate the future
                if (state.historyIndex < state.locationHistory.length - 1) {
                    state.locationHistory = state.locationHistory.slice(0, state.historyIndex + 1);
                }
                
                state.locationHistory.push({...location});
                state.historyIndex = state.locationHistory.length - 1;
            }
            
            state.currentLocation = location;
            state.searchQuery = '';
            state.selectedFiles = [];
            updateFileList();
            updateDeleteButton();
            updateSelectAllCheckbox();
            updateBreadcrumbs();
            
            // Update back button state
            updateBackForwardButtons();
        }

        function navigateBack() {
            if (state.historyIndex > 0) {
                state.historyIndex--;
                state.currentLocation = {...state.locationHistory[state.historyIndex]};
                updateFileList();
                updateDeleteButton();
                updateSelectAllCheckbox();
                updateBreadcrumbs();
                updateBackForwardButtons();
            }
        }

        function navigateForward() {
            if (state.historyIndex < state.locationHistory.length - 1) {
                state.historyIndex++;
                state.currentLocation = {...state.locationHistory[state.historyIndex]};
                updateFileList();
                updateDeleteButton();
                updateSelectAllCheckbox();
                updateBreadcrumbs();
                updateBackForwardButtons();
            }
        }

        function updateBackForwardButtons() {
            const backBtn = document.getElementById('backBtn');
            const forwardBtn = document.getElementById('forwardBtn');
            
            if (state.historyIndex > 0) {
                backBtn.disabled = false;
                backBtn.classList.remove('opacity-50', 'cursor-not-allowed');
            } else {
                backBtn.disabled = true;
                backBtn.classList.add('opacity-50', 'cursor-not-allowed');
            }
            
            if (state.historyIndex < state.locationHistory.length - 1) {
                forwardBtn.disabled = false;
                forwardBtn.classList.remove('opacity-50', 'cursor-not-allowed');
            } else {
                forwardBtn.disabled = true;
                forwardBtn.classList.add('opacity-50', 'cursor-not-allowed');
            }
        }

        function toggleIndexing() {
            state.isIndexing = !state.isIndexing;
            
            const indexBtn = document.getElementById('indexBtn');
            const indexBtnText = document.getElementById('indexBtnText');
            const indexStatus = document.getElementById('indexStatus');
            
            if (state.isIndexing) {
                indexBtn.classList.add('glow');
                indexBtnText.textContent = 'Indexing...';
                indexStatus.innerHTML = '<span class="text-indigo-600 font-medium flex items-center"><span class="w-2 h-2 rounded-full bg-indigo-500 mr-1.5 animate-pulse"></span>Running</span>';
                
                let count = state.indexedCount;
                const interval = setInterval(() => {
                    count += Math.floor(Math.random() * 10);
                    document.getElementById('indexedCount').textContent = count;
                    document.getElementById('lastIndexed').textContent = 'Just now';
                    
                    if (!state.isIndexing) {
                        clearInterval(interval);
                    }
                }, 3000);
                
                setTimeout(() => {
                    if (Math.random() > 0.7) {
                        state.isIndexing = false;
                        indexBtn.classList.remove('glow');
                        indexBtnText.textContent = 'Index Now';
                        indexStatus.textContent = 'Idle';
                        showToast('Indexing completed successfully', 'success');
                    }
                }, 15000);
            } else {
                indexBtn.classList.remove('glow');
                indexBtnText.textContent = 'Index Now';
                indexStatus.textContent = 'Idle';
            }
        }

        function refreshFiles() {
            state.performanceRating = ['fast', 'normal', 'slow'][Math.floor(Math.random() * 3)];
            
            const performanceIcon = document.getElementById('performanceIcon');
            const performanceText = document.getElementById('performanceText');
            
            performanceText.textContent = `${state.performanceRating} performance`;
            
            if (state.performanceRating === 'fast') {
                performanceIcon.className = 'fas fa-circle text-xs mr-1.5 text-emerald-500';
            } else if (state.performanceRating === 'normal') {
                performanceIcon.className = 'fas fa-circle text-xs mr-1.5 text-amber-500';
            } else {
                performanceIcon.className = 'fas fa-circle text-xs mr-1.5 text-rose-500';
            }
            
            if (Math.random() > 0.7) {
                const newFiles = [...state.files];
                if (newFiles.length > 5 && Math.random() > 0.5) {
                    newFiles.splice(Math.floor(Math.random() * newFiles.length), 1);
                } else {
                    const authors = ['John Doe', 'Jane Smith', 'Mike Johnson', 'Sarah Wilson', 'Emma Davis'];
                    const newFile = {
                        id: Math.max(...newFiles.map(f => f.id)) + 1,
                        name: ['New Document.docx', 'Report.pdf', 'Image.jpg', 'Archive.zip', 'Data.xlsx'][Math.floor(Math.random() * 5)],
                        path: [...state.currentLocation.path],
                        author: authors[Math.floor(Math.random() * authors.length)],
                        type: ['PDF Document', 'Word Document', 'Excel Spreadsheet', 'JPEG Image', 'ZIP Archive'][Math.floor(Math.random() * 5)],
                        size: Math.floor(Math.random() * 10000),
                        modified: new Date().toISOString(),
                        isFavorite: Math.random() > 0.8
                    };
                    newFiles.push(newFile);
                }
                state.files = newFiles;
                updateFileList();
                showToast('Files refreshed', 'success');
            } else {
                showToast('Files are up to date', 'info');
            }
        }

        function sortBy(column) {
            if (state.activeSort === column) {
                state.sortDirection = state.sortDirection === 'asc' ? 'desc' : 'asc';
            } else {
                state.activeSort = column;
                state.sortDirection = 'asc';
            }
            
            updateSortIcons();
            updateFileList();
        }

        function toggleSelectAll(e) {
            const allFiles = filterFiles();
            if (e.target.checked) {
                state.selectedFiles = [...allFiles];
            } else {
                state.selectedFiles = [];
            }
            
            updateFileList();
            updateDeleteButton();
        }

        function toggleFileSelection(file, e) {
            if (e.target.checked) {
                state.selectedFiles.push(file);
            } else {
                const index = state.selectedFiles.findIndex(f => f.id === file.id);
                if (index !== -1) {
                    state.selectedFiles.splice(index, 1);
                }
            }
            
            updateDeleteButton();
            updateSelectAllCheckbox();
        }

        function openFile(file) {
            if (file.type === 'Folder') {
                // Navigate to folder
                const newLocation = {
                    id: Date.now(),
                    name
</html>