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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>Mini Linux OS</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>
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0; }
        }
        .cursor-blink {
            animation: blink 1s infinite;
        }
        .window {
            box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
        }
        .file-icon:hover {
            transform: scale(1.05);
        }
        .terminal-line::before {
            content: "> ";
            color: #4ade80;
            font-weight: bold;
        }
        .resize-handle {
            width: 100%;
            height: 5px;
            background-color: rgba(0, 0, 0, 0.1);
            cursor: ns-resize;
        }
        .process-bar {
            transition: width 0.5s ease;
        }
        .directory-item:hover {
            background-color: rgba(74, 222, 128, 0.1);
        }
        .file-item:hover {
            background-color: rgba(96, 165, 250, 0.1);
        }
    </style>
</head>
<body class="bg-gray-900 text-gray-200 h-screen overflow-hidden font-mono">
    <!-- Desktop -->
    <div class="h-full flex flex-col">
        <!-- Top Bar -->
        <div class="bg-gray-800 px-4 py-2 flex justify-between items-center border-b border-gray-700">
            <div class="flex items-center space-x-4">
                <span class="font-bold text-green-400">MiniLinux</span>
                <div class="hidden md:flex space-x-2">
                    <button class="px-3 py-1 hover:bg-gray-700 rounded">File</button>
                    <button class="px-3 py-1 hover:bg-gray-700 rounded">Edit</button>
                    <button class="px-3 py-1 hover:bg-gray-700 rounded">View</button>
                    <button class="px-3 py-1 hover:bg-gray-700 rounded">Help</button>
                </div>
            </div>
            <div class="flex items-center space-x-2">
                <span id="clock" class="px-3 py-1 bg-gray-700 rounded">00:00:00</span>
                <button class="w-8 h-8 flex items-center justify-center hover:bg-gray-700 rounded-full">
                    <i class="fas fa-power-off"></i>
                </button>
            </div>
        </div>

        <!-- Desktop Icons -->
        <div class="flex-grow relative p-4">
            <div class="absolute top-4 left-4 flex flex-col items-center w-20 text-center cursor-pointer file-icon">
                <div class="w-12 h-12 bg-blue-500 rounded flex items-center justify-center mb-1">
                    <i class="fas fa-folder text-white text-2xl"></i>
                </div>
                <span class="text-xs">Home</span>
            </div>
            <div class="absolute top-4 left-28 flex flex-col items-center w-20 text-center cursor-pointer file-icon">
                <div class="w-12 h-12 bg-green-500 rounded flex items-center justify-center mb-1">
                    <i class="fas fa-terminal text-white text-2xl"></i>
                </div>
                <span class="text-xs">Terminal</span>
            </div>
            <div class="absolute top-28 left-4 flex flex-col items-center w-20 text-center cursor-pointer file-icon">
                <div class="w-12 h-12 bg-purple-500 rounded flex items-center justify-center mb-1">
                    <i class="fas fa-file-alt text-white text-2xl"></i>
                </div>
                <span class="text-xs">Documents</span>
            </div>
            <div class="absolute top-28 left-28 flex flex-col items-center w-20 text-center cursor-pointer file-icon">
                <div class="w-12 h-12 bg-yellow-500 rounded flex items-center justify-center mb-1">
                    <i class="fas fa-chart-bar text-white text-2xl"></i>
                </div>
                <span class="text-xs">System</span>
            </div>

            <!-- Windows -->
            <div id="terminal-window" class="window absolute top-20 left-20 w-3/4 md:w-1/2 bg-gray-800 rounded-lg overflow-hidden z-10">
                <div class="bg-gray-700 px-3 py-2 flex justify-between items-center">
                    <div class="flex items-center space-x-2">
                        <i class="fas fa-terminal text-green-400"></i>
                        <span>Terminal</span>
                    </div>
                    <div class="flex space-x-2">
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-gray-600 rounded">
                            <i class="fas fa-minus text-xs"></i>
                        </button>
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-gray-600 rounded">
                            <i class="fas fa-square text-xs"></i>
                        </button>
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-red-500 rounded">
                            <i class="fas fa-times text-xs"></i>
                        </button>
                    </div>
                </div>
                <div class="resize-handle"></div>
                <div id="terminal-content" class="p-3 h-64 overflow-y-auto">
                    <div class="text-green-400 mb-2">Welcome to MiniLinux Terminal</div>
                    <div class="text-gray-400 mb-4">Type 'help' to see available commands</div>
                    <div id="terminal-history"></div>
                    <div class="flex items-center">
                        <span id="terminal-prompt" class="text-green-400 mr-2">user@minilinux:~$</span>
                        <input id="terminal-input" type="text" class="bg-transparent border-none outline-none flex-grow" autofocus>
                        <span class="cursor-blink">|</span>
                    </div>
                </div>
            </div>

            <div id="files-window" class="window absolute top-40 left-40 w-3/4 md:w-1/2 bg-gray-800 rounded-lg overflow-hidden hidden">
                <div class="bg-gray-700 px-3 py-2 flex justify-between items-center">
                    <div class="flex items-center space-x-2">
                        <i class="fas fa-folder text-blue-400"></i>
                        <span id="files-window-title">File Explorer</span>
                    </div>
                    <div class="flex space-x-2">
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-gray-600 rounded">
                            <i class="fas fa-minus text-xs"></i>
                        </button>
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-gray-600 rounded">
                            <i class="fas fa-square text-xs"></i>
                        </button>
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-red-500 rounded">
                            <i class="fas fa-times text-xs"></i>
                        </button>
                    </div>
                </div>
                <div class="resize-handle"></div>
                <div class="p-3 h-64 overflow-y-auto">
                    <div class="flex items-center mb-2">
                        <button id="files-back" class="mr-3 text-gray-400 hover:text-white cursor-pointer disabled:opacity-50" disabled>
                            <i class="fas fa-arrow-left"></i>
                        </button>
                        <button id="files-forward" class="mr-3 text-gray-400 hover:text-white cursor-pointer disabled:opacity-50" disabled>
                            <i class="fas fa-arrow-right"></i>
                        </button>
                        <button id="files-home" class="mr-3 text-gray-400 hover:text-white cursor-pointer">
                            <i class="fas fa-home"></i>
                        </button>
                        <div id="files-path" class="bg-gray-700 px-2 py-1 rounded text-sm flex-grow">/home/user</div>
                    </div>
                    <div id="files-content" class="grid grid-cols-2 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-6 gap-4">
                        <!-- Content will be generated by JavaScript -->
                    </div>
                </div>
            </div>

            <div id="system-window" class="window absolute top-60 left-60 w-3/4 md:w-1/2 bg-gray-800 rounded-lg overflow-hidden hidden">
                <div class="bg-gray-700 px-3 py-2 flex justify-between items-center">
                    <div class="flex items-center space-x-2">
                        <i class="fas fa-chart-bar text-yellow-400"></i>
                        <span>System Monitor</span>
                    </div>
                    <div class="flex space-x-2">
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-gray-600 rounded">
                            <i class="fas fa-minus text-xs"></i>
                        </button>
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-gray-600 rounded">
                            <i class="fas fa-square text-xs"></i>
                        </button>
                        <button class="w-5 h-5 flex items-center justify-center hover:bg-red-500 rounded">
                            <i class="fas fa-times text-xs"></i>
                        </button>
                    </div>
                </div>
                <div class="resize-handle"></div>
                <div class="p-3 h-64 overflow-y-auto">
                    <div class="mb-4">
                        <div class="flex justify-between mb-1">
                            <span>CPU Usage</span>
                            <span id="cpu-usage">0%</span>
                        </div>
                        <div class="w-full bg-gray-700 rounded-full h-2.5">
                            <div id="cpu-bar" class="bg-blue-500 h-2.5 rounded-full process-bar" style="width: 0%"></div>
                        </div>
                    </div>
                    <div class="mb-4">
                        <div class="flex justify-between mb-1">
                            <span>Memory Usage</span>
                            <span id="mem-usage">0%</span>
                        </div>
                        <div class="w-full bg-gray-700 rounded-full h-2.5">
                            <div id="mem-bar" class="bg-purple-500 h-2.5 rounded-full process-bar" style="width: 0%"></div>
                        </div>
                    </div>
                    <div class="mb-4">
                        <div class="flex justify-between mb-1">
                            <span>Disk Usage</span>
                            <span id="disk-usage">0%</span>
                        </div>
                        <div class="w-full bg-gray-700 rounded-full h-2.5">
                            <div id="disk-bar" class="bg-green-500 h-2.5 rounded-full process-bar" style="width: 0%"></div>
                        </div>
                    </div>
                    <div>
                        <h3 class="font-bold mb-2">Running Processes</h3>
                        <div class="bg-gray-700 rounded p-2">
                            <div class="grid grid-cols-4 gap-2 text-sm mb-1 font-bold border-b border-gray-600 pb-1">
                                <span>PID</span>
                                <span>Name</span>
                                <span>CPU</span>
                                <span>Memory</span>
                            </div>
                            <div id="process-list" class="text-sm">
                                <!-- Processes will be added here -->
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Taskbar -->
        <div class="bg-gray-800 px-3 py-2 flex items-center space-x-3 border-t border-gray-700">
            <button id="terminal-launcher" class="w-10 h-10 flex items-center justify-center hover:bg-gray-700 rounded">
                <i class="fas fa-terminal text-green-400"></i>
            </button>
            <button id="files-launcher" class="w-10 h-10 flex items-center justify-center hover:bg-gray-700 rounded">
                <i class="fas fa-folder text-blue-400"></i>
            </button>
            <button id="system-launcher" class="w-10 h-10 flex items-center justify-center hover:bg-gray-700 rounded">
                <i class="fas fa-chart-bar text-yellow-400"></i>
            </button>
            <div class="flex-grow"></div>
            <div class="flex items-center space-x-2">
                <span id="network-status" class="px-2 py-1 bg-gray-700 rounded text-xs flex items-center">
                    <i class="fas fa-wifi mr-1"></i>
                    <span>Connected</span>
                </span>
                <span id="battery-status" class="px-2 py-1 bg-gray-700 rounded text-xs flex items-center">
                    <i class="fas fa-battery-full mr-1"></i>
                    <span>100%</span>
                </span>
            </div>
        </div>
    </div>

    <script>
        // File system structure
        const fileSystem = {
            name: '/',
            type: 'directory',
            children: [
                {
                    name: 'bin',
                    type: 'directory',
                    children: [
                        { name: 'bash', type: 'executable', size: '1.2MB' },
                        { name: 'ls', type: 'executable', size: '56KB' },
                        { name: 'cat', type: 'executable', size: '48KB' }
                    ]
                },
                {
                    name: 'etc',
                    type: 'directory',
                    children: [
                        { name: 'passwd', type: 'file', size: '2KB' },
                        { name: 'hosts', type: 'file', size: '1KB' },
                        {
                            name: 'network',
                            type: 'directory',
                            children: [
                                { name: 'interfaces', type: 'file', size: '3KB' }
                            ]
                        }
                    ]
                },
                {
                    name: 'home',
                    type: 'directory',
                    children: [
                        {
                            name: 'user',
                            type: 'directory',
                            children: [
                                {
                                    name: 'Documents',
                                    type: 'directory',
                                    children: [
                                        { name: 'notes.txt', type: 'file', size: '4KB', content: 'These are my personal notes.\n\nTodo:\n- Learn JavaScript\n- Build a Linux simulator\n- Have fun!' },
                                        { name: 'report.pdf', type: 'file', size: '2.4MB' }
                                    ]
                                },
                                {
                                    name: 'Downloads',
                                    type: 'directory',
                                    children: [
                                        { name: 'linux_handbook.pdf', type: 'file', size: '5.2MB' }
                                    ]
                                },
                                {
                                    name: 'Pictures',
                                    type: 'directory',
                                    children: [
                                        { name: 'vacation.jpg', type: 'file', size: '3.8MB' }
                                    ]
                                },
                                { name: '.bashrc', type: 'file', size: '2KB', content: '# User specific aliases and functions\nalias ll=\'ls -la\'\nalias ..=\'cd ..\'' },
                                { name: 'todo.txt', type: 'file', size: '1KB', content: '- Buy groceries\n- Call mom\n- Finish project' }
                            ]
                        }
                    ]
                },
                {
                    name: 'usr',
                    type: 'directory',
                    children: [
                        {
                            name: 'bin',
                            type: 'directory',
                            children: [
                                { name: 'python', type: 'executable', size: '4.8MB' },
                                { name: 'gcc', type: 'executable', size: '3.2MB' }
                            ]
                        },
                        {
                            name: 'lib',
                            type: 'directory',
                            children: [
                                { name: 'libc.so.6', type: 'library', size: '2.1MB' }
                            ]
                        }
                    ]
                },
                {
                    name: 'var',
                    type: 'directory',
                    children: [
                        {
                            name: 'log',
                            type: 'directory',
                            children: [
                                { name: 'syslog', type: 'file', size: '12KB' }
                            ]
                        }
                    ]
                },
                { name: 'README.md', type: 'file', size: '1KB', content: '# MiniLinux\n\nThis is a simulated Linux environment running in your browser.' }
            ]
        };

        // Current directory state
        let currentDir = ['home', 'user'];
        let dirHistory = [];
        let dirHistoryIndex = -1;

        // Update clock
        function updateClock() {
            const now = new Date();
            const timeString = now.toLocaleTimeString();
            document.getElementById('clock').textContent = timeString;
        }
        setInterval(updateClock, 1000);
        updateClock();

        // Terminal functionality
        const terminalInput = document.getElementById('terminal-input');
        const terminalHistory = document.getElementById('terminal-history');
        const terminalPrompt = document.getElementById('terminal-prompt');
        
        // Update terminal prompt based on current directory
        function updateTerminalPrompt() {
            const path = currentDir.length > 0 ? currentDir.join('/') : '~';
            terminalPrompt.textContent = `user@minilinux:${path}$`;
        }

        // Get current directory from file system
        function getCurrentDirectory() {
            let dir = fileSystem;
            for (const part of currentDir) {
                const found = dir.children.find(child => child.name === part && child.type === 'directory');
                if (!found) return null;
                dir = found;
            }
            return dir;
        }

        // Available commands
        const commands = {
            help: () => {
                return `Available commands:<br>
                - help: Show this help message<br>
                - ls: List directory contents<br>
                - clear: Clear the terminal<br>
                - date: Show current date and time<br>
                - echo [text]: Print text to terminal<br>
                - neofetch: Show system information<br>
                - cpu: Show CPU usage<br>
                - mem: Show memory usage<br>
                - pwd: Print working directory<br>
                - cd [dir]: Change directory<br>
                - cat [file]: Display file contents<br>
                - mkdir [dir]: Create new directory<br>
                - touch [file]: Create new file<br>
                - rm [file]: Remove file<br>
                - rmdir [dir]: Remove directory<br>
                - shutdown: Power off the system`;
            },
            ls: (args) => {
                const dir = getCurrentDirectory();
                if (!dir) return `ls: cannot access '${currentDir.join('/')}': No such file or directory`;
                
                let output = '';
                const showHidden = args.includes('-a');
                const longFormat = args.includes('-l');
                
                dir.children.forEach(child => {
                    if (!showHidden && child.name.startsWith('.')) return;
                    
                    if (longFormat) {
                        const typeChar = child.type === 'directory' ? 'd' : '-';
                        const size = child.size || '0';
                        output += `${typeChar}rw-r--r-- 1 user user ${size.padEnd(8)} ${child.name}<br>`;
                    } else {
                        output += child.name + '  ';
                    }
                });
                
                return output || (longFormat ? '' : '(empty directory)');
            },
            clear: () => {
                terminalHistory.innerHTML = '';
                return '';
            },
            date: () => {
                return new Date().toString();
            },
            echo: (args) => {
                return args.join(' ');
            },
            neofetch: () => {
                return `user@minilinux<br>
                -----------------<br>
                OS: MiniLinux 1.0<br>
                Host: Web Browser<br>
                Kernel: 5.15.0-76-generic<br>
                Uptime: 2 hours, 15 minutes<br>
                Shell: bash 5.1.16<br>
                CPU: Virtual CPU @ 2.5GHz<br>
                Memory: 1024MB / 2048MB (50%)<br>
                Disk: 15GB / 50GB (30%)`;
            },
            cpu: () => {
                const usage = Math.floor(Math.random() * 100);
                return `CPU usage: ${usage}%`;
            },
            mem: () => {
                const usage = Math.floor(Math.random() * 100);
                const total = 2048;
                const used = Math.floor(total * usage / 100);
                return `Memory: ${used}MB / ${total}MB (${usage}%)`;
            },
            pwd: () => {
                return currentDir.length > 0 ? '/' + currentDir.join('/') : '/';
            },
            cd: (args) => {
                if (args.length === 0) {
                    // Go to home directory
                    currentDir = ['home', 'user'];
                    updateTerminalPrompt();
                    updateFilesWindow();
                    return '';
                }
                
                const target = args[0];
                let newDir;
                
                if (target === '..') {
                    // Go up one directory
                    if (currentDir.length > 0) {
                        currentDir.pop();
                    }
                } else if (target === '/') {
                    // Go to root
                    currentDir = [];
                } else if (target.startsWith('/')) {
                    // Absolute path
                    const parts = target.split('/').filter(p => p);
                    currentDir = parts;
                } else {
                    // Relative path
                    newDir = [...currentDir, ...target.split('/')];
                }
                
                // Validate the new directory exists
                if (newDir) {
                    let dir = fileSystem;
                    for (const part of newDir) {
                        const found = dir.children.find(child => child.name === part && child.type === 'directory');
                        if (!found) {
                            return `cd: no such file or directory: ${target}`;
                        }
                        dir = found;
                    }
                    currentDir = newDir;
                }
                
                updateTerminalPrompt();
                updateFilesWindow();
                return '';
            },
            cat: (args) => {
                if (args.length === 0) {
                    return 'cat: missing file operand';
                }
                
                const filename = args[0];
                const dir = getCurrentDirectory();
                if (!dir) return `cat: ${currentDir.join('/')}: No such file or directory`;
                
                const file = dir.children.find(child => child.name === filename && child.type === 'file');
                if (!file) {
                    return `cat: ${filename}: No such file or directory`;
                }
                
                return file.content || '(empty file)';
            },
            mkdir: (args) => {
                if (args.length === 0) {
                    return 'mkdir: missing operand';
                }
                
                const dirname = args[0];
                const dir = getCurrentDirectory();
                if (!dir) return `mkdir: cannot create directory '${dirname}': No such file or directory`;
                
                if (dir.children.some(child => child.name === dirname)) {
                    return `mkdir: cannot create directory '${dirname}': File exists`;
                }
                
                dir.children.push({
                    name: dirname,
                    type: 'directory',
                    children: []
                });
                
                updateFilesWindow();
                return '';
            },
            touch: (args) => {
                if (args.length === 0) {
                    return 'touch: missing file operand';
                }
                
                const filename = args[0];
                const dir = getCurrentDirectory();
                if (!dir) return `touch: cannot touch '${filename}': No such file or directory`;
                
                if (dir.children.some(child => child.name === filename)) {
                    return '';
                }
                
                dir.children.push({
                    name: filename,
                    type: 'file',
                    size: '0KB'
                });
                
                updateFilesWindow();
                return '';
            },
            rm: (args) => {
                if (args.length === 0) {
                    return 'rm: missing operand';
                }
                
                const filename = args[0];
                const dir = getCurrentDirectory();
                if (!dir) return `rm: cannot remove '${filename}': No such file or directory`;
                
                const index = dir.children.findIndex(child => child.name === filename && child.type === 'file');
                if (index === -1) {
                    return `rm: cannot remove '${filename}': No such file or directory`;
                }
                
                dir.children.splice(index, 1);
                updateFilesWindow();
                return '';
            },
            rmdir: (args) => {
                if (args.length === 0) {
                    return 'rmdir: missing operand';
                }
                
                const dirname = args[0];
                const dir = getCurrentDirectory();
                if (!dir) return `rmdir: failed to remove '${dirname}': No such file or directory`;
                
                const target = dir.children.find(child => child.name === dirname && child.type === 'directory');
                if (!target) {
                    return `rmdir: failed to remove '${dirname}': No such file or directory`;
                }
                
                if (target.children.length > 0) {
                    return `rmdir: failed to remove '${dirname}': Directory not empty`;
                }
                
                dir.children = dir.children.filter(child => child !== target);
                updateFilesWindow();
                return '';
            },
            shutdown: () => {
                setTimeout(() => {
                    alert('System is shutting down...');
                    document.body.innerHTML = '<div class="h-screen w-screen bg-black flex items-center justify-center"><div class="text-white text-2xl">System halted. It\'s now safe to close this window.</div></div>';
                }, 1000);
                return 'Shutting down system...';
            }
        };

        terminalInput.addEventListener('keydown', (e) => {
            if (e.key === 'Enter') {
                const input = terminalInput.value.trim();
                terminalInput.value = '';
                
                // Add the command to history
                const commandLine = document.createElement('div');
                commandLine.className = 'mb-2';
                commandLine.innerHTML = `<span class="text-green-400">${terminalPrompt.textContent}</span> ${input}`;
                terminalHistory.appendChild(commandLine);
                
                // Process command
                const parts = input.split(' ');
                const cmd = parts[0].toLowerCase();
                const args = parts.slice(1);
                
                let output = '';
                if (commands[cmd]) {
                    output = commands[cmd](args);
                } else if (cmd) {
                    output = `Command not found: ${cmd}. Type 'help' for available commands.`;
                }
                
                if (output) {
                    const outputElement = document.createElement('div');
                    outputElement.className = 'mb-2 terminal-line';
                    outputElement.innerHTML = output;
                    terminalHistory.appendChild(outputElement);
                }
                
                // Scroll to bottom
                terminalHistory.scrollTop = terminalHistory.scrollHeight;
            }
        });

        // File explorer functionality
        function updateFilesWindow() {
            const dir = getCurrentDirectory();
            const filesContent = document.getElementById('files-content');
            const filesPath = document.getElementById('files-path');
            const filesWindowTitle = document.getElementById('files-window-title');
            
            // Update path display
            const path = currentDir.length > 0 ? '/' + currentDir.join('/') : '/';
            filesPath.textContent = path;
            filesWindowTitle.textContent = `File Explorer - ${path}`;
            
            // Update back/forward buttons
            document.getElementById('files-back').disabled = dirHistoryIndex <= 0;
            document.getElementById('files-forward').disabled = dirHistoryIndex >= dirHistory.length - 1;
            
            // Clear current content
            filesContent.innerHTML = '';
            
            if (!dir) {
                filesContent.innerHTML = '<div class="text-red-400">Error: Directory not found</div>';
                return;
            }
            
            // Add parent directory link (except for root)
            if (currentDir.length > 0) {
                const parentItem = document.createElement('div');
                parentItem.className = 'file-icon flex flex-col items-center p-2 hover:bg-gray-700 rounded cursor-pointer';
                parentItem.innerHTML = `
                    <i class="fas fa-level-up-alt text-gray-400 text-3xl mb-1"></i>
                    <span class="text-xs text-center">..</span>
                `;
                parentItem.addEventListener('dblclick', () => {
                    navigateToParentDirectory();
                });
                filesContent.appendChild(parentItem);
            }
            
            // Add directory contents
            dir.children.forEach(child => {
                const item = document.createElement('div');
                item.className = 'file-icon flex flex-col items-center p-2 hover:bg-gray-700 rounded cursor-pointer';
                
                let icon, color;
                if (child.type === 'directory') {
                    icon = 'fa-folder';
                    color = 'text-blue-400';
                } else if (child.type === 'executable') {
                    icon = 'fa-file-code';
                    color = 'text-green-400';
                } else {
                    icon = 'fa-file';
                    color = 'text-gray-300';
                }
                
                item.innerHTML = `
                    <i class="fas ${icon} ${color} text-3xl mb-1"></i>
                    <span class="text-xs text-center">${child.name}</span>
                `;
                
                if (child.type === 'directory') {
                    item.addEventListener('dblclick', () => {
                        navigateToDirectory(child.name);
                    });
                } else {
                    item.addEventListener('dblclick', () => {
                        // For files, we could open them in a text editor or show content
                        const content = child.content || `This is a ${child.type} file named ${child.name}`;
                        alert(`File: ${child.name}\n\n${content}`);
                    });
                }
                
                filesContent.appendChild(item);
            });
        }

        function navigateToDirectory(dirName) {
            dirHistory = dirHistory.slice(0, dirHistoryIndex + 1);
            dirHistory.push([...currentDir]);
            dirHistoryIndex++;
            
            currentDir.push(dirName);
            updateTerminalPrompt();
            updateFilesWindow();
        }

        function navigateToParentDirectory() {
            dirHistory = dirHistory.slice(0, dirHistoryIndex + 1);
            dirHistory.push([...currentDir]);
            dirHistoryIndex++;
            
            if (currentDir.length > 0) {
                currentDir.pop();
            }
            updateTerminalPrompt();
            updateFilesWindow();
        }

        // Initialize file explorer
        document.getElementById('files-back').addEventListener('click', () => {
            if (dirHistoryIndex > 0) {
                dirHistoryIndex--;
                currentDir = [...dirHistory[dirHistoryIndex]];
                updateTerminalPrompt();
                updateFilesWindow();
            }
        });

        document.getElementById('files-forward').addEventListener('click', () => {
            if (dirHistoryIndex < dirHistory.length - 1) {
                dirHistoryIndex++;
                currentDir = [...dirHistory[dirHistoryIndex]];
                updateTerminalPrompt();
                updateFilesWindow();
            }
        });

        document.getElementById('files-home').addEventListener('click', () => {
            dirHistory = dirHistory.slice(0, dirHistoryIndex + 1);
            dirHistory.push([...currentDir]);
            dirHistoryIndex++;
            
            currentDir = ['home', 'user'];
            updateTerminalPrompt();
            updateFilesWindow();
        });

        // Window management
        function toggleWindow(windowId) {
            const window = document.getElementById(windowId);
            window.classList.toggle('hidden');
            if (!window.classList.contains('hidden')) {
                // Bring to front
                document.querySelectorAll('.window').forEach(w => {
                    w.style.zIndex = '10';
                });
                window.style.zIndex = '20';
                
                // Update content if needed
                if (windowId === 'files-window') {
                    updateFilesWindow();
                } else if (windowId === 'system-window') {
                    updateSystemStats();
                }
            }
        }

        document.getElementById('terminal-launcher').addEventListener('click', () => {
            toggleWindow('terminal-window');
            document.getElementById('terminal-input').focus();
        });

        document.getElementById('files-launcher').addEventListener('click', () => {
            toggleWindow('files-window');
        });

        document.getElementById('system-launcher').addEventListener('click', () => {
            toggleWindow('system-window');
            updateSystemStats();
        });

        // Desktop icon double click handlers
        document.querySelectorAll('.file-icon').forEach((icon, index) => {
            icon.addEventListener('dblclick', () => {
                if (index === 0) {
                    // Home directory
                    dirHistory = dirHistory.slice(0, dirHistoryIndex + 1);
                    dirHistory.push([...currentDir]);
                    dirHistoryIndex++;
                    
                    currentDir = ['home', 'user'];
                    updateTerminalPrompt();
                    toggleWindow('files-window');
                }
                if (index === 1) {
                    toggleWindow('terminal-window');
                    document.getElementById('terminal-input').focus();
                }
                if (index === 3) toggleWindow('system-window');
            });
        });

        // System monitor updates
        function updateSystemStats() {
            // CPU
            const cpuUsage = Math.floor(Math.random() * 100);
            document.getElementById('cpu-usage').textContent = `${cpuUsage}%`;
            document.getElementById('cpu-bar').style.width = `${cpuUsage}%`;
            
            // Memory
            const memUsage = 30 + Math.floor(Math.random() * 50);
            document.getElementById('mem-usage').textContent = `${memUsage}%`;
            document.getElementById('mem-bar').style.width = `${memUsage}%`;
            
            // Disk
            const diskUsage = 10 + Math.floor(Math.random() * 40);
            document.getElementById('disk-usage').textContent = `${diskUsage}%`;
            document.getElementById('disk-bar').style.width = `${diskUsage}%`;
            
            // Processes
            const processes = [
                { pid: 1234, name: 'bash', cpu: Math.floor(Math.random() * 5), mem: Math.floor(Math.random() * 3) },
                { pid: 2345, name: 'systemd', cpu: Math.floor(Math.random() * 3), mem: 5 + Math.floor(Math.random() * 5) },
                { pid: 3456, name: 'Xorg', cpu: 10 + Math.floor(Math.random() * 15), mem: 50 + Math.floor(Math.random() * 30) },
                { pid: 4567, name: 'chrome', cpu: 20 + Math.floor(Math.random() * 30), mem: 100 + Math.floor(Math.random() * 150) },
                { pid: 5678, name: 'node', cpu: 5 + Math.floor(Math.random() * 10), mem: 30 + Math.floor(Math.random() * 20) }
            ];
            
            const processList = document.getElementById('process-list');
            processList.innerHTML = '';
            
            processes.forEach(proc => {
                const procElement = document.createElement('div');
                procElement.className = 'grid grid-cols-4 gap-2 text-sm mb-1';
                procElement.innerHTML = `
                    <span>${proc.pid}</span>
                    <span>${proc.name}</span>
                    <span>${proc.cpu}%</span>
                    <span>${proc.mem}MB</span>
                `;
                processList.appendChild(procElement);
            });
        }

        // Update system stats periodically when system window is open
        setInterval(() => {
            if (!document.getElementById('system-window').classList.contains('hidden')) {
                updateSystemStats();
            }
        }, 3000);

        // Battery simulation
        let batteryLevel = 100;
        setInterval(() => {
            batteryLevel = Math.max(0, batteryLevel - 0.1);
            const batteryIcon = batteryLevel > 80 ? 'fa-battery-full' : 
                               batteryLevel > 60 ? 'fa-battery-three-quarters' :
                               batteryLevel > 40 ? 'fa-battery-half' :
                               batteryLevel > 20 ? 'fa-battery-quarter' : 'fa-battery-empty';
            
            document.getElementById('battery-status').innerHTML = `
                <i class="fas ${batteryIcon} mr-1"></i>
                <span>${Math.floor(batteryLevel)}%</span>
            `;
        }, 10000);

        // Make windows draggable
        document.querySelectorAll('.window').forEach(window => {
            const header = window.querySelector('.bg-gray-700');
            
            header.addEventListener('mousedown', (e) => {
                if (e.target.tagName === 'BUTTON' || e.target.tagName === 'I') return;
                
                const startX = e.clientX;
                const startY = e.clientY;
                const startLeft = parseInt(window.style.left || '0');
                const startTop = parseInt(window.style.top || '0');
                
                function moveWindow(e) {
                    const dx = e.clientX - startX;
                    const dy = e.clientY - startY;
                    window.style.left = (startLeft + dx) + 'px';
                    window.style.top = (startTop + dy) + 'px';
                }
                
                function stopMoving() {
                    document.removeEventListener('mousemove', moveWindow);
                    document.removeEventListener('mouseup', stopMoving);
                }
                
                document.addEventListener('mousemove', moveWindow);
                document.addEventListener('mouseup', stopMoving);
            });
        });

        // Window controls
        document.querySelectorAll('.window').forEach(window => {
            const closeBtn = window.querySelectorAll('button')[2];
            const minimizeBtn = window.querySelectorAll('button')[0];
            const maximizeBtn = window.querySelectorAll('button')[1];
            
            closeBtn.addEventListener('click', () => {
                window.classList.add('hidden');
            });
            
            minimizeBtn.addEventListener('click', () => {
                const content = window.querySelector('.h-64');
                if (content.style.display === 'none') {
                    content.style.display = '';
                } else {
                    content.style.display = 'none';
                }
            });
            
            maximizeBtn.addEventListener('click', () => {
                if (window.style.width === '90%') {
                    window.style.width = '';
                    window.style.height = '';
                    window.style.left = '';
                    window.style.top = '';
                } else {
                    window.style.width = '90%';
                    window.style.height = '80%';
                    window.style.left = '5%';
                    window.style.top = '10%';
                }
            });
        });

        // Resize handles
        document.querySelectorAll('.resize-handle').forEach(handle => {
            handle.addEventListener('mousedown', (e) => {
                const window = handle.parentElement;
                const startY = e.clientY;
                const startHeight = parseInt(window.style.height || window.offsetHeight);
                
                function resizeWindow(e) {
                    const dy = e.clientY - startY;
                    const newHeight = startHeight + dy;
                    window.style.height = Math.max(200, newHeight) + 'px';
                }
                
                function stopResizing() {
                    document.removeEventListener('mousemove', resizeWindow);
                    document.removeEventListener('mouseup', stopResizing);
                }
                
                document.addEventListener('mousemove', resizeWindow);
                document.addEventListener('mouseup', stopResizing);
            });
        });

        // Initialize terminal prompt
        updateTerminalPrompt();
    </script>
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