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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>Night Shift Break Tracker</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>
        .pulse-animation {
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { opacity: 1; }
            50% { opacity: 0.5; }
            100% { opacity: 1; }
        }
        .slide-in {
            animation: slideIn 0.3s ease-out;
        }
        @keyframes slideIn {
            from { transform: translateY(20px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
    </style>
</head>
<body class="bg-gray-100 min-h-screen">
    <div class="container mx-auto px-4 py-8 max-w-3xl">
        <!-- Header -->
        <header class="mb-8 text-center">
            <h1 class="text-3xl font-bold text-gray-800 mb-2">Night Shift Break Tracker</h1>
            <p class="text-gray-600">Monitor employee breaks during night shifts (6PM - 6AM)</p>
            <div class="mt-4 p-3 bg-blue-50 rounded-lg flex items-center justify-center">
                <i class="fas fa-clock text-blue-500 mr-2"></i>
                <span id="current-time" class="font-mono font-bold text-blue-700"></span>
                <span id="shift-status" class="ml-4 px-3 py-1 rounded-full text-xs font-semibold bg-blue-100 text-blue-800"></span>
            </div>
        </header>

        <!-- Employee Card -->
        <div class="bg-white rounded-xl shadow-md overflow-hidden mb-6 slide-in">
            <div class="p-6">
                <div class="flex items-center justify-between mb-4">
                    <div>
                        <h2 class="text-xl font-semibold text-gray-800" id="employee-name">John Doe</h2>
                        <p class="text-gray-600 text-sm">Employee ID: NS-2023-001</p>
                    </div>
                    <div class="flex items-center">
                        <div class="w-3 h-3 rounded-full mr-2" id="status-indicator"></div>
                        <span class="text-sm font-medium" id="status-text">Working</span>
                    </div>
                </div>

                <!-- Time Tracking -->
                <div class="grid grid-cols-2 gap-4 mb-6">
                    <div class="bg-gray-50 p-4 rounded-lg">
                        <p class="text-sm text-gray-500 mb-1">Shift Started</p>
                        <p class="font-mono font-bold" id="shift-start-time">--:-- --</p>
                    </div>
                    <div class="bg-gray-50 p-4 rounded-lg">
                        <p class="text-sm text-gray-500 mb-1">Current Break</p>
                        <p class="font-mono font-bold" id="current-break-time">00:00</p>
                    </div>
                    <div class="bg-gray-50 p-4 rounded-lg">
                        <p class="text-sm text-gray-500 mb-1">Total Break Time</p>
                        <p class="font-mono font-bold" id="total-break-time">00:00</p>
                    </div>
                    <div class="bg-gray-50 p-4 rounded-lg">
                        <p class="text-sm text-gray-500 mb-1">Break Type</p>
                        <p class="font-mono font-bold" id="break-type">None</p>
                    </div>
                </div>

                <!-- Break Progress -->
                <div class="mb-6">
                    <div class="flex justify-between text-sm text-gray-600 mb-1">
                        <span>Break Progress</span>
                        <span id="break-progress-text">0%</span>
                    </div>
                    <div class="w-full bg-gray-200 rounded-full h-2.5">
                        <div class="bg-blue-600 h-2.5 rounded-full" id="break-progress-bar" style="width: 0%"></div>
                    </div>
                </div>

                <!-- Action Buttons -->
                <div class="flex flex-col space-y-3" id="action-buttons">
                    <button id="check-in-btn" class="hidden w-full bg-green-500 hover:bg-green-600 text-white py-3 px-4 rounded-lg font-medium transition duration-200 flex items-center justify-center">
                        <i class="fas fa-sign-in-alt mr-2"></i> Check In to Start Shift
                    </button>
                    <button id="check-out-btn" class="w-full bg-red-500 hover:bg-red-600 text-white py-3 px-4 rounded-lg font-medium transition duration-200 flex items-center justify-center">
                        <i class="fas fa-sign-out-alt mr-2"></i> Check Out for Break
                    </button>
                </div>

                <!-- Location Warning -->
                <div id="location-warning" class="hidden mt-4 p-3 bg-red-50 border border-red-200 rounded-lg text-red-600 text-sm flex items-center">
                    <i class="fas fa-exclamation-circle mr-2"></i>
                    <span>You must be within 20m of workplace to check in/out</span>
                </div>
            </div>
        </div>

        <!-- Break Rules -->
        <div class="bg-white rounded-xl shadow-md overflow-hidden mb-6 slide-in">
            <div class="p-6">
                <h3 class="text-lg font-semibold text-gray-800 mb-4">Break Rules</h3>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                    <div class="bg-blue-50 p-4 rounded-lg border border-blue-100">
                        <div class="flex items-center mb-2">
                            <div class="w-3 h-3 rounded-full bg-blue-500 mr-2"></div>
                            <span class="font-medium">Break 1</span>
                        </div>
                        <p class="text-sm text-gray-700">10 minutes duration</p>
                    </div>
                    <div class="bg-purple-50 p-4 rounded-lg border border-purple-100">
                        <div class="flex items-center mb-2">
                            <div class="w-3 h-3 rounded-full bg-purple-500 mr-2"></div>
                            <span class="font-medium">Break 2</span>
                        </div>
                        <p class="text-sm text-gray-700">40 minutes duration</p>
                    </div>
                    <div class="bg-green-50 p-4 rounded-lg border border-green-100">
                        <div class="flex items-center mb-2">
                            <div class="w-3 h-3 rounded-full bg-green-500 mr-2"></div>
                            <span class="font-medium">Break 3</span>
                        </div>
                        <p class="text-sm text-gray-700">10 minutes duration</p>
                    </div>
                    <div class="bg-yellow-50 p-4 rounded-lg border border-yellow-100">
                        <div class="flex items-center mb-2">
                            <div class="w-3 h-3 rounded-full bg-yellow-500 mr-2"></div>
                            <span class="font-medium">Break 4</span>
                        </div>
                        <p class="text-sm text-gray-700">10 minutes duration</p>
                    </div>
                </div>
            </div>
        </div>

        <!-- Break History -->
        <div class="bg-white rounded-xl shadow-md overflow-hidden slide-in">
            <div class="p-6">
                <h3 class="text-lg font-semibold text-gray-800 mb-4">Today's Break History</h3>
                <div class="overflow-x-auto">
                    <table class="min-w-full divide-y divide-gray-200">
                        <thead class="bg-gray-50">
                            <tr>
                                <th scope="col" class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Break</th>
                                <th scope="col" class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Start Time</th>
                                <th scope="col" class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">End Time</th>
                                <th scope="col" class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Duration</th>
                                <th scope="col" class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Status</th>
                            </tr>
                        </thead>
                        <tbody class="bg-white divide-y divide-gray-200" id="break-history">
                            <!-- Will be populated by JavaScript -->
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>

    <!-- Success Modal -->
    <div id="success-modal" class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50 hidden">
        <div class="bg-white rounded-xl p-6 max-w-sm w-full mx-4 slide-in">
            <div class="text-center">
                <div class="mx-auto flex items-center justify-center h-12 w-12 rounded-full bg-green-100 mb-4">
                    <i class="fas fa-check text-green-600 text-xl"></i>
                </div>
                <h3 class="text-lg font-medium text-gray-900 mb-2" id="modal-title">Success</h3>
                <p class="text-sm text-gray-500 mb-4" id="modal-message">Action completed successfully.</p>
                <button id="modal-close-btn" class="w-full bg-blue-600 text-white py-2 px-4 rounded-lg hover:bg-blue-700 transition duration-200">
                    OK
                </button>
            </div>
        </div>
    </div>

    <script>
        // App State
        const state = {
            shiftStarted: false,
            currentBreak: null,
            breakStartTime: null,
            totalBreakTime: 0,
            breakHistory: [],
            currentBreakType: null,
            inLocation: true, // Simulate location check
            workplaceLocation: { lat: 40.7128, lng: -74.0060 }, // Example coordinates
            breakRules: {
                1: { name: "Break 1", duration: 10 * 60 * 1000, color: "blue" },
                2: { name: "Break 2", duration: 40 * 60 * 1000, color: "purple" },
                3: { name: "Break 3", duration: 10 * 60 * 1000, color: "green" },
                4: { name: "Break 4", duration: 10 * 60 * 1000, color: "yellow" }
            },
            shiftStartTime: null
        };

        // DOM Elements
        const elements = {
            currentTime: document.getElementById('current-time'),
            shiftStatus: document.getElementById('shift-status'),
            employeeName: document.getElementById('employee-name'),
            statusIndicator: document.getElementById('status-indicator'),
            statusText: document.getElementById('status-text'),
            shiftStartTime: document.getElementById('shift-start-time'),
            currentBreakTime: document.getElementById('current-break-time'),
            totalBreakTime: document.getElementById('total-break-time'),
            breakType: document.getElementById('break-type'),
            breakProgressText: document.getElementById('break-progress-text'),
            breakProgressBar: document.getElementById('break-progress-bar'),
            checkInBtn: document.getElementById('check-in-btn'),
            checkOutBtn: document.getElementById('check-out-btn'),
            locationWarning: document.getElementById('location-warning'),
            breakHistory: document.getElementById('break-history'),
            successModal: document.getElementById('success-modal'),
            modalTitle: document.getElementById('modal-title'),
            modalMessage: document.getElementById('modal-message'),
            modalCloseBtn: document.getElementById('modal-close-btn')
        };

        // Initialize the app
        function init() {
            updateClock();
            setInterval(updateClock, 1000);
            
            // Check if shift should be active based on time (6PM-6AM)
            checkShiftTime();
            
            // Set up event listeners
            elements.checkInBtn.addEventListener('click', startShift);
            elements.checkOutBtn.addEventListener('click', toggleBreak);
            elements.modalCloseBtn.addEventListener('click', () => {
                elements.successModal.classList.add('hidden');
            });
            
            // Simulate location check (in a real app, this would use Geolocation API)
            simulateLocationCheck();
        }

        // Update clock display
        function updateClock() {
            const now = new Date();
            const timeString = now.toLocaleTimeString('en-US', { hour: '2-digit', minute: '2-digit', second: '2-digit' });
            elements.currentTime.textContent = timeString;
            
            // Update current break timer if in break
            if (state.currentBreak) {
                updateBreakTimer();
            }
        }

        // Check if current time is within shift hours (6PM-6AM)
        function checkShiftTime() {
            const now = new Date();
            const hours = now.getHours();
            const isNightShift = hours >= 18 || hours < 6;
            
            if (isNightShift) {
                elements.shiftStatus.textContent = "Night Shift Active";
                elements.shiftStatus.classList.remove('bg-red-100', 'text-red-800');
                elements.shiftStatus.classList.add('bg-green-100', 'text-green-800');
            } else {
                elements.shiftStatus.textContent = "Day Time (Shift Inactive)";
                elements.shiftStatus.classList.remove('bg-green-100', 'text-green-800');
                elements.shiftStatus.classList.add('bg-red-100', 'text-red-800');
                
                // Reset if outside shift hours
                if (state.shiftStarted) {
                    endShift();
                }
            }
        }

        // Start the shift
        function startShift() {
            if (!state.inLocation) {
                showLocationWarning();
                return;
            }
            
            state.shiftStarted = true;
            state.shiftStartTime = new Date();
            state.totalBreakTime = 0;
            state.breakHistory = [];
            state.currentBreak = null;
            state.currentBreakType = null;
            
            updateUI();
            
            const timeString = state.shiftStartTime.toLocaleTimeString('en-US', { hour: '2-digit', minute: '2-digit' });
            elements.shiftStartTime.textContent = timeString;
            
            showSuccessModal("Shift Started", "Your night shift has started successfully. Remember to take your breaks on time!");
        }

        // End the shift
        function endShift() {
            state.shiftStarted = false;
            state.shiftStartTime = null;
            state.currentBreak = null;
            state.currentBreakType = null;
            
            updateUI();
        }

        // Toggle break (start or end)
        function toggleBreak() {
            if (!state.inLocation) {
                showLocationWarning();
                return;
            }
            
            if (state.currentBreak) {
                endBreak();
            } else {
                startBreak();
            }
        }

        // Start a break
        function startBreak() {
            if (!state.shiftStarted) return;
            
            // Determine next break type
            const breaksTaken = state.breakHistory.filter(b => b.type !== null).length;
            let nextBreakType = null;
            
            if (breaksTaken < 4) {
                nextBreakType = breaksTaken + 1;
            } else {
                // All breaks taken
                showSuccessModal("All Breaks Taken", "You have already taken all your scheduled breaks for this shift.");
                return;
            }
            
            state.currentBreak = true;
            state.breakStartTime = new Date();
            state.currentBreakType = nextBreakType;
            
            updateUI();
            
            // Add to history
            state.breakHistory.push({
                type: nextBreakType,
                startTime: new Date(state.breakStartTime),
                endTime: null,
                duration: null
            });
            
            updateBreakHistory();
            
            const breakName = state.breakRules[nextBreakType].name;
            showSuccessModal("Break Started", `Your ${breakName} has started. Duration: ${state.breakRules[nextBreakType].duration / 60000} minutes.`);
        }

        // End current break
        function endBreak() {
            if (!state.currentBreak || !state.breakStartTime) return;
            
            const endTime = new Date();
            const duration = endTime - state.breakStartTime;
            state.totalBreakTime += duration;
            
            // Update history
            const currentBreak = state.breakHistory.find(b => b.endTime === null);
            if (currentBreak) {
                currentBreak.endTime = endTime;
                currentBreak.duration = duration;
            }
            
            // Check if break duration matches rules
            const expectedDuration = state.breakRules[state.currentBreakType].duration;
            const isCorrectDuration = Math.abs(duration - expectedDuration) < 30000; // 30 second tolerance
            
            state.currentBreak = false;
            state.breakStartTime = null;
            state.currentBreakType = null;
            
            updateUI();
            updateBreakHistory();
            
            const breakName = state.breakRules[state.currentBreakType].name;
            if (isCorrectDuration) {
                showSuccessModal("Break Ended", `Your ${breakName} has ended. Duration was correct.`);
            } else {
                showSuccessModal("Break Ended", `Your ${breakName} has ended. Note: Duration was ${Math.round(duration / 60000)} minutes (expected ${expectedDuration / 60000} minutes).`);
            }
        }

        // Update break timer display
        function updateBreakTimer() {
            if (!state.currentBreak || !state.breakStartTime) return;
            
            const now = new Date();
            const elapsed = now - state.breakStartTime;
            const minutes = Math.floor(elapsed / 60000);
            const seconds = Math.floor((elapsed % 60000) / 1000);
            
            elements.currentBreakTime.textContent = `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
            
            // Update progress
            if (state.currentBreakType) {
                const expectedDuration = state.breakRules[state.currentBreakType].duration;
                const progress = Math.min(100, (elapsed / expectedDuration) * 100);
                elements.breakProgressBar.style.width = `${progress}%`;
                elements.breakProgressText.textContent = `${Math.round(progress)}%`;
                
                // Change color if over duration
                if (progress >= 100) {
                    elements.breakProgressBar.classList.remove('bg-blue-600');
                    elements.breakProgressBar.classList.add('bg-red-600');
                } else {
                    elements.breakProgressBar.classList.remove('bg-red-600');
                    elements.breakProgressBar.classList.add('bg-blue-600');
                }
            }
        }

        // Update UI based on current state
        function updateUI() {
            // Check in/out button visibility
            elements.checkInBtn.classList.toggle('hidden', state.shiftStarted);
            elements.checkOutBtn.classList.toggle('hidden', !state.shiftStarted);
            
            // Status indicator
            if (state.currentBreak) {
                elements.statusIndicator.className = 'w-3 h-3 rounded-full mr-2 pulse-animation';
                elements.statusIndicator.classList.add(`bg-${state.breakRules[state.currentBreakType].color}-500`);
                elements.statusText.textContent = state.breakRules[state.currentBreakType].name;
                
                elements.checkOutBtn.innerHTML = '<i class="fas fa-sign-in-alt mr-2"></i> Check In from Break';
                elements.checkOutBtn.classList.remove('bg-red-500', 'hover:bg-red-600');
                elements.checkOutBtn.classList.add('bg-green-500', 'hover:bg-green-600');
            } else {
                elements.statusIndicator.className = 'w-3 h-3 rounded-full mr-2 bg-green-500';
                elements.statusText.textContent = 'Working';
                
                elements.checkOutBtn.innerHTML = '<i class="fas fa-sign-out-alt mr-2"></i> Check Out for Break';
                elements.checkOutBtn.classList.remove('bg-green-500', 'hover:bg-green-600');
                elements.checkOutBtn.classList.add('bg-red-500', 'hover:bg-red-600');
            }
            
            // Break type display
            if (state.currentBreakType) {
                elements.breakType.textContent = state.breakRules[state.currentBreakType].name;
                elements.breakType.classList.add(`text-${state.breakRules[state.currentBreakType].color}-600`);
            } else {
                elements.breakType.textContent = 'None';
                elements.breakType.className = 'font-mono font-bold';
            }
            
            // Total break time display
            const totalMinutes = Math.floor(state.totalBreakTime / 60000);
            const totalSeconds = Math.floor((state.totalBreakTime % 60000) / 1000);
            elements.totalBreakTime.textContent = `${totalMinutes.toString().padStart(2, '0')}:${totalSeconds.toString().padStart(2, '0')}`;
            
            // Reset current break time if not in break
            if (!state.currentBreak) {
                elements.currentBreakTime.textContent = '00:00';
                elements.breakProgressBar.style.width = '0%';
                elements.breakProgressText.textContent = '0%';
                elements.breakProgressBar.classList.remove('bg-red-600');
                elements.breakProgressBar.classList.add('bg-blue-600');
            }
        }

        // Update break history table
        function updateBreakHistory() {
            elements.breakHistory.innerHTML = '';
            
            state.breakHistory.forEach(breakItem => {
                const row = document.createElement('tr');
                
                const typeCell = document.createElement('td');
                typeCell.className = 'px-4 py-3 whitespace-nowrap text-sm font-medium text-gray-900';
                typeCell.textContent = breakItem.type ? state.breakRules[breakItem.type].name : 'Shift Start';
                
                const startCell = document.createElement('td');
                startCell.className = 'px-4 py-3 whitespace-nowrap text-sm text-gray-500';
                startCell.textContent = breakItem.startTime.toLocaleTimeString('en-US', { hour: '2-digit', minute: '2-digit' });
                
                const endCell = document.createElement('td');
                endCell.className = 'px-4 py-3 whitespace-nowrap text-sm text-gray-500';
                endCell.textContent = breakItem.endTime ? breakItem.endTime.toLocaleTimeString('en-US', { hour: '2-digit', minute: '2-digit' }) : '--:-- --';
                
                const durationCell = document.createElement('td');
                durationCell.className = 'px-4 py-3 whitespace-nowrap text-sm text-gray-500';
                if (breakItem.duration) {
                    const minutes = Math.floor(breakItem.duration / 60000);
                    const seconds = Math.floor((breakItem.duration % 60000) / 1000);
                    durationCell.textContent = `${minutes}m ${seconds}s`;
                } else {
                    durationCell.textContent = '--';
                }
                
                const statusCell = document.createElement('td');
                statusCell.className = 'px-4 py-3 whitespace-nowrap text-sm';
                
                if (breakItem.endTime) {
                    const expectedDuration = breakItem.type ? state.breakRules[breakItem.type].duration : 0;
                    const isCorrect = breakItem.type ? Math.abs(breakItem.duration - expectedDuration) < 30000 : true;
                    
                    if (isCorrect) {
                        statusCell.innerHTML = '<span class="px-2 py-1 rounded-full text-xs font-semibold bg-green-100 text-green-800">Completed</span>';
                    } else {
                        statusCell.innerHTML = '<span class="px-2 py-1 rounded-full text-xs font-semibold bg-yellow-100 text-yellow-800">Incorrect Duration</span>';
                    }
                } else if (breakItem.type) {
                    statusCell.innerHTML = '<span class="px-2 py-1 rounded-full text-xs font-semibold bg-blue-100 text-blue-800">In Progress</span>';
                } else {
                    statusCell.innerHTML = '<span class="px-2 py-1 rounded-full text-xs font-semibold bg-gray-100 text-gray-800">Shift Active</span>';
                }
                
                row.appendChild(typeCell);
                row.appendChild(startCell);
                row.appendChild(endCell);
                row.appendChild(durationCell);
                row.appendChild(statusCell);
                
                elements.breakHistory.appendChild(row);
            });
        }

        // Show location warning
        function showLocationWarning() {
            elements.locationWarning.classList.remove('hidden');
            setTimeout(() => {
                elements.locationWarning.classList.add('hidden');
            }, 5000);
        }

        // Show success modal
        function showSuccessModal(title, message) {
            elements.modalTitle.textContent = title;
            elements.modalMessage.textContent = message;
            elements.successModal.classList.remove('hidden');
        }

        // Simulate location check (in a real app, this would use Geolocation API)
        function simulateLocationCheck() {
            // Randomly toggle location status for demo purposes
            setInterval(() => {
                state.inLocation = Math.random() > 0.2; // 80% chance of being in location
                
                if (!state.inLocation) {
                    elements.checkInBtn.classList.add('hidden');
                    elements.checkOutBtn.classList.add('hidden');
                    showLocationWarning();
                } else {
                    updateUI(); // Show buttons again if in location
                }
            }, 10000);
        }

        // Initialize the app when DOM is loaded
        document.addEventListener('DOMContentLoaded', init);
    </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=ivanhoang/break-plan" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
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