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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>ZenTask - Minimal Todo App</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;
            background-color: #f8fafc;
        }
        
        .task-item:hover .task-actions {
            opacity: 1;
        }
        
        .task-actions {
            opacity: 0;
            transition: opacity 0.2s ease;
        }
        
        .checkbox-container input {
            position: absolute;
            opacity: 0;
            cursor: pointer;
            height: 0;
            width: 0;
        }
        
        .checkmark {
            position: relative;
            height: 20px;
            width: 20px;
            border: 2px solid #94a3b8;
            border-radius: 4px;
            transition: all 0.2s ease;
        }
        
        .checkbox-container input:checked ~ .checkmark {
            background-color: #4f46e5;
            border-color: #4f46e5;
        }
        
        .checkmark:after {
            content: "";
            position: absolute;
            display: none;
        }
        
        .checkbox-container input:checked ~ .checkmark:after {
            display: block;
        }
        
        .checkbox-container .checkmark:after {
            left: 6px;
            top: 2px;
            width: 5px;
            height: 10px;
            border: solid white;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }
        
        .fade-in {
            animation: fadeIn 0.3s ease-in-out;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .priority-high {
            border-left: 4px solid #ef4444;
        }
        
        .priority-medium {
            border-left: 4px solid #f59e0b;
        }
        
        .priority-low {
            border-left: 4px solid #10b981;
        }
    </style>
</head>
<body class="min-h-screen bg-gray-50">
    <div class="container mx-auto px-4 py-8 max-w-3xl">
        <header class="mb-8 text-center">
            <h1 class="text-4xl font-bold text-indigo-600 mb-2">ZenTask</h1>
            <p class="text-gray-600">Your minimalist productivity companion</p>
        </header>
        
        <div class="bg-white rounded-xl shadow-md overflow-hidden mb-6 transition-all duration-300 hover:shadow-lg">
            <div class="p-6">
                <div class="flex items-center mb-4">
                    <div class="relative flex-grow">
                        <input 
                            type="text" 
                            id="new-task-input" 
                            placeholder="What needs to be done?" 
                            class="w-full px-4 py-3 border-0 rounded-lg bg-gray-100 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:bg-white transition"
                            autocomplete="off"
                        >
                    </div>
                    <button 
                        id="add-task-btn" 
                        class="ml-3 bg-indigo-600 hover:bg-indigo-700 text-white px-4 py-3 rounded-lg transition flex items-center"
                    >
                        <i class="fas fa-plus mr-2"></i> Add
                    </button>
                </div>
                
                <div class="flex items-center justify-between text-sm">
                    <div class="flex space-x-2">
                        <button id="priority-high-btn" class="px-3 py-1 rounded-full bg-red-100 text-red-600 flex items-center">
                            <i class="fas fa-exclamation-circle mr-1"></i> High
                        </button>
                        <button id="priority-medium-btn" class="px-3 py-1 rounded-full bg-amber-100 text-amber-600 flex items-center">
                            <i class="fas fa-exclamation mr-1"></i> Medium
                        </button>
                        <button id="priority-low-btn" class="px-3 py-1 rounded-full bg-emerald-100 text-emerald-600 flex items-center">
                            <i class="fas fa-arrow-down mr-1"></i> Low
                        </button>
                    </div>
                    
                    <div class="flex items-center">
                        <span id="task-count" class="text-gray-500">0 tasks</span>
                    </div>
                </div>
            </div>
        </div>
        
        <div class="mb-6 flex justify-between items-center">
            <div class="flex space-x-2">
                <button id="filter-all" class="px-4 py-2 rounded-lg bg-indigo-100 text-indigo-700 font-medium">All</button>
                <button id="filter-active" class="px-4 py-2 rounded-lg text-gray-600 hover:bg-gray-100">Active</button>
                <button id="filter-completed" class="px-4 py-2 rounded-lg text-gray-600 hover:bg-gray-100">Completed</button>
            </div>
            
            <button id="clear-completed" class="text-gray-500 hover:text-gray-700 text-sm">
                <i class="fas fa-trash-alt mr-1"></i> Clear completed
            </button>
        </div>
        
        <div id="tasks-container" class="space-y-3">
            <!-- Tasks will be added here dynamically -->
            <div class="text-center py-10 text-gray-500" id="empty-state">
                <i class="fas fa-tasks text-4xl mb-3 opacity-30"></i>
                <p class="text-lg">No tasks yet</p>
                <p class="text-sm mt-1">Add your first task to get started</p>
            </div>
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            // DOM Elements
            const newTaskInput = document.getElementById('new-task-input');
            const addTaskBtn = document.getElementById('add-task-btn');
            const tasksContainer = document.getElementById('tasks-container');
            const emptyState = document.getElementById('empty-state');
            const taskCount = document.getElementById('task-count');
            const clearCompletedBtn = document.getElementById('clear-completed');
            
            // Priority buttons
            const priorityHighBtn = document.getElementById('priority-high-btn');
            const priorityMediumBtn = document.getElementById('priority-medium-btn');
            const priorityLowBtn = document.getElementById('priority-low-btn');
            
            // Filter buttons
            const filterAllBtn = document.getElementById('filter-all');
            const filterActiveBtn = document.getElementById('filter-active');
            const filterCompletedBtn = document.getElementById('filter-completed');
            
            // State
            let tasks = JSON.parse(localStorage.getItem('tasks')) || [];
            let currentPriority = 'medium';
            let currentFilter = 'all';
            
            // Initialize
            updateTaskCount();
            renderTasks();
            
            // Event Listeners
            addTaskBtn.addEventListener('click', addTask);
            newTaskInput.addEventListener('keypress', function(e) {
                if (e.key === 'Enter') addTask();
            });
            
            priorityHighBtn.addEventListener('click', () => setPriority('high'));
            priorityMediumBtn.addEventListener('click', () => setPriority('medium'));
            priorityLowBtn.addEventListener('click', () => setPriority('low'));
            
            filterAllBtn.addEventListener('click', () => setFilter('all'));
            filterActiveBtn.addEventListener('click', () => setFilter('active'));
            filterCompletedBtn.addEventListener('click', () => setFilter('completed'));
            
            clearCompletedBtn.addEventListener('click', clearCompletedTasks);
            
            // Functions
            function addTask() {
                const taskText = newTaskInput.value.trim();
                if (taskText === '') return;
                
                const newTask = {
                    id: Date.now(),
                    text: taskText,
                    completed: false,
                    priority: currentPriority,
                    createdAt: new Date().toISOString()
                };
                
                tasks.unshift(newTask);
                saveTasks();
                renderTasks();
                updateTaskCount();
                
                newTaskInput.value = '';
                newTaskInput.focus();
            }
            
            function renderTasks() {
                if (tasks.length === 0) {
                    emptyState.style.display = 'block';
                    tasksContainer.innerHTML = '';
                    tasksContainer.appendChild(emptyState);
                    return;
                }
                
                emptyState.style.display = 'none';
                
                let filteredTasks = [...tasks];
                
                if (currentFilter === 'active') {
                    filteredTasks = tasks.filter(task => !task.completed);
                } else if (currentFilter === 'completed') {
                    filteredTasks = tasks.filter(task => task.completed);
                }
                
                if (filteredTasks.length === 0) {
                    const noTasksMessage = document.createElement('div');
                    noTasksMessage.className = 'text-center py-10 text-gray-500';
                    noTasksMessage.innerHTML = `
                        <i class="fas fa-info-circle text-3xl mb-3 opacity-30"></i>
                        <p class="text-lg">No ${currentFilter} tasks</p>
                    `;
                    tasksContainer.innerHTML = '';
                    tasksContainer.appendChild(noTasksMessage);
                    return;
                }
                
                tasksContainer.innerHTML = '';
                
                filteredTasks.forEach(task => {
                    const taskElement = document.createElement('div');
                    taskElement.className = `task-item bg-white rounded-lg shadow-sm p-4 flex items-center justify-between fade-in priority-${task.priority}`;
                    taskElement.dataset.id = task.id;
                    
                    const leftSection = document.createElement('div');
                    leftSection.className = 'flex items-center';
                    
                    const checkboxContainer = document.createElement('label');
                    checkboxContainer.className = 'checkbox-container flex items-center cursor-pointer mr-3';
                    
                    const checkbox = document.createElement('input');
                    checkbox.type = 'checkbox';
                    checkbox.checked = task.completed;
                    checkbox.className = 'task-checkbox';
                    
                    const checkmark = document.createElement('span');
                    checkmark.className = 'checkmark';
                    
                    checkboxContainer.appendChild(checkbox);
                    checkboxContainer.appendChild(checkmark);
                    
                    const taskText = document.createElement('span');
                    taskText.className = `task-text ${task.completed ? 'line-through text-gray-400' : 'text-gray-700'}`;
                    taskText.textContent = task.text;
                    
                    leftSection.appendChild(checkboxContainer);
                    leftSection.appendChild(taskText);
                    
                    const taskActions = document.createElement('div');
                    taskActions.className = 'task-actions flex space-x-2';
                    
                    const editBtn = document.createElement('button');
                    editBtn.className = 'text-gray-400 hover:text-indigo-500 transition';
                    editBtn.innerHTML = '<i class="fas fa-pencil-alt"></i>';
                    
                    const deleteBtn = document.createElement('button');
                    deleteBtn.className = 'text-gray-400 hover:text-red-500 transition';
                    deleteBtn.innerHTML = '<i class="fas fa-trash-alt"></i>';
                    
                    taskActions.appendChild(editBtn);
                    taskActions.appendChild(deleteBtn);
                    
                    taskElement.appendChild(leftSection);
                    taskElement.appendChild(taskActions);
                    
                    tasksContainer.appendChild(taskElement);
                    
                    // Add event listeners
                    checkbox.addEventListener('change', () => toggleTaskComplete(task.id));
                    editBtn.addEventListener('click', () => editTask(task.id));
                    deleteBtn.addEventListener('click', () => deleteTask(task.id));
                });
            }
            
            function toggleTaskComplete(taskId) {
                const taskIndex = tasks.findIndex(task => task.id === taskId);
                if (taskIndex !== -1) {
                    tasks[taskIndex].completed = !tasks[taskIndex].completed;
                    saveTasks();
                    updateTaskCount();
                    
                    if (currentFilter !== 'all') {
                        renderTasks();
                    } else {
                        const taskElement = document.querySelector(`.task-item[data-id="${taskId}"]`);
                        if (taskElement) {
                            const taskText = taskElement.querySelector('.task-text');
                            if (tasks[taskIndex].completed) {
                                taskText.classList.add('line-through', 'text-gray-400');
                            } else {
                                taskText.classList.remove('line-through', 'text-gray-400');
                            }
                        }
                    }
                }
            }
            
            function editTask(taskId) {
                const task = tasks.find(task => task.id === taskId);
                if (!task) return;
                
                const taskElement = document.querySelector(`.task-item[data-id="${taskId}"]`);
                if (!taskElement) return;
                
                const leftSection = taskElement.querySelector('.flex.items-center');
                const taskText = taskElement.querySelector('.task-text');
                const taskActions = taskElement.querySelector('.task-actions');
                
                const editInput = document.createElement('input');
                editInput.type = 'text';
                editInput.value = task.text;
                editInput.className = 'px-2 py-1 border border-gray-300 rounded-md focus:outline-none focus:ring-1 focus:ring-indigo-500';
                
                const saveBtn = document.createElement('button');
                saveBtn.className = 'ml-2 px-3 py-1 bg-indigo-600 text-white rounded-md hover:bg-indigo-700 transition';
                saveBtn.textContent = 'Save';
                
                const cancelBtn = document.createElement('button');
                cancelBtn.className = 'ml-2 px-3 py-1 bg-gray-200 text-gray-700 rounded-md hover:bg-gray-300 transition';
                cancelBtn.textContent = 'Cancel';
                
                leftSection.removeChild(taskText);
                leftSection.appendChild(editInput);
                taskActions.style.display = 'none';
                
                leftSection.appendChild(saveBtn);
                leftSection.appendChild(cancelBtn);
                
                editInput.focus();
                
                saveBtn.addEventListener('click', () => {
                    const newText = editInput.value.trim();
                    if (newText !== '') {
                        task.text = newText;
                        saveTasks();
                    }
                    cancelEdit();
                });
                
                cancelBtn.addEventListener('click', cancelEdit);
                
                editInput.addEventListener('keypress', function(e) {
                    if (e.key === 'Enter') {
                        const newText = editInput.value.trim();
                        if (newText !== '') {
                            task.text = newText;
                            saveTasks();
                        }
                        cancelEdit();
                    }
                });
                
                function cancelEdit() {
                    leftSection.removeChild(editInput);
                    leftSection.removeChild(saveBtn);
                    leftSection.removeChild(cancelBtn);
                    leftSection.appendChild(taskText);
                    taskActions.style.display = 'flex';
                }
            }
            
            function deleteTask(taskId) {
                tasks = tasks.filter(task => task.id !== taskId);
                saveTasks();
                renderTasks();
                updateTaskCount();
            }
            
            function clearCompletedTasks() {
                tasks = tasks.filter(task => !task.completed);
                saveTasks();
                renderTasks();
                updateTaskCount();
            }
            
            function setPriority(priority) {
                currentPriority = priority;
                
                // Reset all buttons
                priorityHighBtn.className = 'px-3 py-1 rounded-full flex items-center';
                priorityMediumBtn.className = 'px-3 py-1 rounded-full flex items-center';
                priorityLowBtn.className = 'px-3 py-1 rounded-full flex items-center';
                
                // Set active button
                if (priority === 'high') {
                    priorityHighBtn.className = 'px-3 py-1 rounded-full bg-red-100 text-red-600 flex items-center';
                } else if (priority === 'medium') {
                    priorityMediumBtn.className = 'px-3 py-1 rounded-full bg-amber-100 text-amber-600 flex items-center';
                } else {
                    priorityLowBtn.className = 'px-3 py-1 rounded-full bg-emerald-100 text-emerald-600 flex items-center';
                }
            }
            
            function setFilter(filter) {
                currentFilter = filter;
                
                // Reset all buttons
                filterAllBtn.className = 'px-4 py-2 rounded-lg text-gray-600 hover:bg-gray-100';
                filterActiveBtn.className = 'px-4 py-2 rounded-lg text-gray-600 hover:bg-gray-100';
                filterCompletedBtn.className = 'px-4 py-2 rounded-lg text-gray-600 hover:bg-gray-100';
                
                // Set active button
                if (filter === 'all') {
                    filterAllBtn.className = 'px-4 py-2 rounded-lg bg-indigo-100 text-indigo-700 font-medium';
                } else if (filter === 'active') {
                    filterActiveBtn.className = 'px-4 py-2 rounded-lg bg-indigo-100 text-indigo-700 font-medium';
                } else {
                    filterCompletedBtn.className = 'px-4 py-2 rounded-lg bg-indigo-100 text-indigo-700 font-medium';
                }
                
                renderTasks();
            }
            
            function updateTaskCount() {
                const totalTasks = tasks.length;
                const completedTasks = tasks.filter(task => task.completed).length;
                const activeTasks = totalTasks - completedTasks;
                
                if (totalTasks === 0) {
                    taskCount.textContent = 'No tasks';
                } else if (completedTasks === 0) {
                    taskCount.textContent = `${activeTasks} ${activeTasks === 1 ? 'task' : 'tasks'} remaining`;
                } else {
                    taskCount.textContent = `${activeTasks} of ${totalTasks} ${totalTasks === 1 ? 'task' : 'tasks'} remaining`;
                }
            }
            
            function saveTasks() {
                localStorage.setItem('tasks', JSON.stringify(tasks));
            }
        });
    </script>
<p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=claudelle/todo" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
</html>