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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>Student Attendance System</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>
        /* Custom animations */
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }
        .animate-pulse {
            animation: pulse 2s infinite;
        }
        
        /* Custom scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        ::-webkit-scrollbar-thumb {
            background: #888;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #555;
        }
        
        /* Custom checkbox */
        input[type="checkbox"].custom-checkbox {
            appearance: none;
            -webkit-appearance: none;
            width: 24px;
            height: 24px;
            border: 2px solid #e2e8f0;
            border-radius: 6px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }
        input[type="checkbox"].custom-checkbox:checked {
            background-color: #4f46e5;
            border-color: #4f46e5;
        }
        input[type="checkbox"].custom-checkbox:checked::after {
            content: "✓";
            color: white;
            font-size: 14px;
            font-weight: bold;
        }
    </style>
</head>
<body class="bg-gray-50">
    <div class="min-h-screen flex flex-col">
        <!-- Header -->
        <header class="bg-indigo-600 text-white shadow-lg">
            <div class="container mx-auto px-4 py-4">
                <div class="flex justify-between items-center">
                    <div class="flex items-center space-x-2">
                        <i class="fas fa-clipboard-check text-2xl"></i>
                        <h1 class="text-xl font-bold">Attendance Portal</h1>
                    </div>
                    <div class="flex items-center space-x-4">
                        <div class="hidden md:flex items-center space-x-2 bg-indigo-500 px-3 py-1 rounded-full">
                            <i class="fas fa-user-graduate"></i>
                            <span id="student-name">John Doe</span>
                        </div>
                        <button class="bg-white text-indigo-600 px-4 py-1 rounded-full font-medium hover:bg-indigo-50 transition">Logout</button>
                    </div>
                </div>
            </div>
        </header>

        <!-- Main Content -->
        <main class="flex-1 container mx-auto px-4 py-6">
            <div class="grid grid-cols-1 lg:grid-cols-3 gap-6">
                <!-- Left Column - Student Info and Today's Classes -->
                <div class="lg:col-span-1 space-y-6">
                    <!-- Student Profile Card -->
                    <div class="bg-white rounded-xl shadow-md p-6">
                        <div class="flex items-center space-x-4 mb-4">
                            <div class="relative">
                                <img src="https://randomuser.me/api/portraits/men/32.jpg" alt="Student" class="w-16 h-16 rounded-full object-cover border-2 border-indigo-100">
                                <span class="absolute bottom-0 right-0 bg-green-500 rounded-full w-4 h-4 border-2 border-white"></span>
                            </div>
                            <div>
                                <h2 class="font-bold text-lg" id="full-name">John Doe</h2>
                                <p class="text-gray-600" id="student-id">ID: S10024</p>
                                <p class="text-gray-600" id="student-courses">Computer Science</p>
                            </div>
                        </div>
                        <div class="grid grid-cols-3 gap-2 text-center">
                            <div class="bg-indigo-50 rounded-lg p-2">
                                <p class="text-gray-500 text-sm">Total Classes</p>
                                <p class="font-bold">48</p>
                            </div>
                            <div class="bg-indigo-50 rounded-lg p-2">
                                <p class="text-gray-500 text-sm">Present</p>
                                <p class="font-bold">42</p>
                            </div>
                            <div class="bg-indigo-50 rounded-lg p-2">
                                <p class="text-gray-500 text-sm">Attendance</p>
                                <p class="font-bold text-green-600">87.5%</p>
                            </div>
                        </div>
                    </div>

                    <!-- Today's Classes -->
                    <div class="bg-white rounded-xl shadow-md p-6">
                        <h3 class="font-bold text-lg mb-4 flex items-center">
                            <i class="fas fa-calendar-day mr-2 text-indigo-600"></i>
                            Today's Schedule
                        </h3>
                        <div class="space-y-3">
                            <div class="flex justify-between items-center p-3 bg-indigo-50 rounded-lg">
                                <div>
                                    <p class="font-medium">Data Structures</p>
                                    <p class="text-sm text-gray-500">9:00 AM - 10:30 AM</p>
                                </div>
                                <div class="text-green-500">
                                    <i class="fas fa-check-circle"></i>
                                </div>
                            </div>
                            <div class="flex justify-between items-center p-3 bg-indigo-50 rounded-lg">
                                <div>
                                    <p class="font-medium">Algorithms</p>
                                    <p class="text-sm text-gray-500">11:00 AM - 12:30 PM</p>
                                </div>
                                <div class="text-orange-500">
                                    <i class="fas fa-clock"></i>
                                </div>
                            </div>
                            <div class="flex justify-between items-center p-3 bg-gray-50 rounded-lg">
                                <div>
                                    <p class="font-medium">Database Systems</p>
                                    <p class="text-sm text-gray-500">2:00 PM - 3:30 PM</p>
                                </div>
                                <div class="text-gray-400">
                                    <i class="fas fa-lock"></i>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>

                <!-- Right Column - Attendance Form -->
                <div class="lg:col-span-2">
                    <div class="bg-white rounded-xl shadow-md overflow-hidden">
                        <!-- Attendance Form Header -->
                        <div class="bg-indigo-600 text-white px-6 py-4">
                            <div class="flex justify-between items-center">
                                <h2 class="text-xl font-bold flex items-center">
                                    <i class="fas fa-user-check mr-2"></i>
                                    Mark Attendance
                                </h2>
                                <div class="flex items-center space-x-2">
                                    <span id="current-date" class="font-medium">June 15, 2023</span>
                                </div>
                            </div>
                        </div>

                        <!-- Attendance Form Body -->
                        <div class="p-6">
                            <!-- Current Class Info -->
                            <div class="bg-indigo-50 rounded-lg p-4 mb-6">
                                <div class="flex justify-between items-center">
                                    <div>
                                        <h3 class="font-bold text-lg" id="current-class-name">Algorithms</h3>
                                        <p class="text-gray-600" id="current-class-time">11:00 AM - 12:30 PM</p>
                                    </div>
                                    <div class="bg-indigo-100 text-indigo-800 px-3 py-1 rounded-full text-sm font-medium">
                                        Active Now
                                    </div>
                                </div>
                            </div>

                            <!-- Geo Location Check -->
                            <div class="mb-6">
                                <div class="flex items-center justify-between mb-3">
                                    <h4 class="font-medium">Location Verification</h4>
                                    <div class="flex items-center space-x-2">
                                        <span class="text-sm text-gray-500">Your location:</span>
                                        <span id="location-status" class="text-sm font-medium text-green-600">Verified</span>
                                    </div>
                                </div>
                                <div class="flex items-center space-x-4">
                                    <div class="flex-1 bg-gray-100 rounded-lg p-3">
                                        <div class="flex items-center justify-between">
                                            <div>
                                                <p class="text-sm font-medium text-gray-700">Approximate Location</p>
                                                <p id="location-details" class="text-sm text-gray-500">University Main Building, Room 204</p>
                                            </div>
                                            <button id="refresh-location" class="text-indigo-600 hover:text-indigo-800">
                                                <i class="fas fa-sync-alt"></i>
                                            </button>
                                        </div>
                                    </div>
                                    <div class="bg-green-100 text-green-800 px-3 py-2 rounded-lg">
                                        <i class="fas fa-check-circle mr-1"></i>
                                        <span>Match</span>
                                    </div>
                                </div>
                            </div>

                            <!-- Attendance Marking -->
                            <div class="mb-6">
                                <h4 class="font-medium mb-3">Confirm Attendance</h4>
                                <div class="bg-indigo-50 rounded-lg p-4">
                                    <div class="flex items-center justify-between mb-2">
                                        <div class="flex items-center space-x-3">
                                            <input type="checkbox" id="confirm-attendance" class="custom-checkbox">
                                            <label for="confirm-attendance" class="text-gray-700 font-medium">I confirm that I'm attending this class</label>
                                        </div>
                                    </div>
                                    <div class="flex items-center justify-between">
                                        <div>
                                            <p class="text-xs text-gray-500">Note: Marking false attendance may lead to disciplinary action.</p>
                                        </div>
                                        <div>
                                            <p class="text-xs text-gray-500">Session will expire in: <span id="timer" class="font-bold">14:32</span></p>
                                        </div>
                                    </div>
                                </div>
                            </div>

                            <!-- QR Code Option -->
                            <div class="mb-8">
                                <h4 class="font-medium mb-3">Alternative Verification</h4>
                                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                                    <button id="scan-qr-btn" class="bg-indigo-100 hover:bg-indigo-200 text-indigo-800 font-medium py-3 px-4 rounded-lg flex items-center justify-center space-x-2 transition">
                                        <i class="fas fa-qrcode"></i>
                                        <span>Scan QR Code</span>
                                    </button>
                                    <button class="bg-gray-100 hover:bg-gray-200 text-gray-800 font-medium py-3 px-4 rounded-lg flex items-center justify-center space-x-2 transition">
                                        <i class="fas fa-fingerprint"></i>
                                        <span>Use Biometric</span>
                                    </button>
                                </div>
                            </div>

                            <!-- Submit Button -->
                            <button id="submit-attendance" class="w-full bg-green-600 hover:bg-green-700 text-white font-bold py-3 px-4 rounded-lg shadow-md flex items-center justify-center space-x-2 transition disabled:opacity-50 disabled:cursor-not-allowed" disabled>
                                <i class="fas fa-check-circle"></i>
                                <span>Submit Attendance</span>
                            </button>
                        </div>
                    </div>

                    <!-- Attendance History -->
                    <div class="mt-6 bg-white rounded-xl shadow-md overflow-hidden">
                        <div class="bg-indigo-600 text-white px-6 py-4">
                            <h2 class="text-xl font-bold flex items-center">
                                <i class="fas fa-history mr-2"></i>
                                Recent Attendance
                            </h2>
                        </div>
                        <div class="overflow-x-auto">
                            <table class="min-w-full divide-y divide-gray-200">
                                <thead class="bg-gray-50">
                                    <tr>
                                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Date</th>
                                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Class</th>
                                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Time</th>
                                        <th class="px-6 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">
                                    <tr>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">June 14, 2023</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">Database Systems</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">2:00 PM - 3:30 PM</td>
                                        <td class="px-6 py-4 whitespace-nowrap">
                                            <span class="px-2 py-1 text-xs font-semibold rounded-full bg-green-100 text-green-800">Present</span>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">June 14, 2023</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">Algorithms</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">11:00 AM - 12:30 PM</td>
                                        <td class="px-6 py-4 whitespace-nowrap">
                                            <span class="px-2 py-1 text-xs font-semibold rounded-full bg-green-100 text-green-800">Present</span>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">June 12, 2023</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">Data Structures</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">9:00 AM - 10:30 AM</td>
                                        <td class="px-6 py-4 whitespace-nowrap">
                                            <span class="px-2 py-1 text-xs font-semibold rounded-full bg-red-100 text-red-800">Absent</span>
                                        </td>
                                    </tr>
                                    <tr>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">June 10, 2023</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">Computer Networks</td>
                                        <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">4:00 PM - 5:30 PM</td>
                                        <td class="px-6 py-4 whitespace-nowrap">
                                            <span class="px-2 py-1 text-xs font-semibold rounded-full bg-green-100 text-green-800">Present</span>
                                        </td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>
        </main>

        <!-- Footer -->
        <footer class="bg-gray-100 border-t border-gray-200 py-4">
            <div class="container mx-auto px-4">
                <p class="text-center text-gray-600 text-sm">© 2023 University Attendance System. All rights reserved.</p>
            </div>
        </footer>
    </div>

    <!-- QR Code Modal -->
    <div id="qr-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 w-full max-w-sm">
            <div class="flex justify-between items-center mb-4">
                <h3 class="text-lg font-bold">Scan QR Code</h3>
                <button id="close-qr-modal" class="text-gray-500 hover:text-gray-700">
                    <i class="fas fa-times"></i>
                </button>
            </div>
            <div class="bg-gray-100 rounded-lg p-4 flex flex-col items-center mb-4">
                <div class="bg-white p-4 rounded-lg mb-4">
                    <!-- Placeholder for QR code -->
                    <div class="w-48 h-48 bg-gray-200 flex items-center justify-center text-gray-500">
                        <div class="text-center">
                            <i class="fas fa-qrcode text-4xl mb-2"></i>
                            <p class="text-sm">QR Code Display</p>
                        </div>
                    </div>
                </div>
                <p class="text-sm text-gray-600 text-center">Point your camera at the QR code displayed by your instructor</p>
            </div>
            <button class="w-full bg-indigo-600 hover:bg-indigo-700 text-white font-medium py-2 px-4 rounded-lg transition">
                Use Camera
            </button>
        </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 w-full max-w-sm">
            <div class="flex flex-col items-center text-center">
                <div class="w-16 h-16 bg-green-100 rounded-full flex items-center justify-center mb-4">
                    <i class="fas fa-check-circle text-green-600 text-3xl"></i>
                </div>
                <h3 class="text-xl font-bold mb-2">Attendance Recorded!</h3>
                <p class="text-gray-600 mb-4">Your attendance has been successfully submitted for <span class="font-medium">Algorithms</span> class.</p>
                <button id="close-success-modal" class="w-full bg-indigo-600 hover:bg-indigo-700 text-white font-medium py-2 px-4 rounded-lg transition">
                    Close
                </button>
            </div>
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            // Set current date
            const now = new Date();
            const options = { year: 'numeric', month: 'long', day: 'numeric' };
            document.getElementById('current-date').textContent = now.toLocaleDateString('en-US', options);

            // Timer countdown
            let minutes = 14;
            let seconds = 32;
            const timerElement = document.getElementById('timer');
            
            const timerInterval = setInterval(() => {
                seconds--;
                if (seconds < 0) {
                    minutes--;
                    seconds = 59;
                }
                
                if (minutes < 0) {
                    clearInterval(timerInterval);
                    timerElement.textContent = "Expired";
                    timerElement.classList.add('text-red-500');
                    document.getElementById('submit-attendance').disabled = true;
                } else {
                    timerElement.textContent = `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
                }
            }, 1000);

            // Attendance checkbox
            const confirmAttendance = document.getElementById('confirm-attendance');
            const submitButton = document.getElementById('submit-attendance');
            
            confirmAttendance.addEventListener('change', () => {
                submitButton.disabled = !confirmAttendance.checked;
            });

            // QR Code Modal
            const qrModal = document.getElementById('qr-modal');
            const scanQrBtn = document.getElementById('scan-qr-btn');
            const closeQrModal = document.getElementById('close-qr-modal');
            
            scanQrBtn.addEventListener('click', () => {
                qrModal.classList.remove('hidden');
            });
            
            closeQrModal.addEventListener('click', () => {
                qrModal.classList.add('hidden');
            });

            // Submit Attendance
            const successModal = document.getElementById('success-modal');
            const closeSuccessModal = document.getElementById('close-success-modal');
            
            submitButton.addEventListener('click', () => {
                qrModal.classList.add('hidden');
                successModal.classList.remove('hidden');
                clearInterval(timerInterval);
            });
            
            closeSuccessModal.addEventListener('click', () => {
                successModal.classList.add('hidden');
                // In a real app, this would redirect or refresh the page
            });

            // Refresh location
            const refreshLocationBtn = document.getElementById('refresh-location');
            refreshLocationBtn.addEventListener('click', () => {
                // Simulate refreshing location
                refreshLocationBtn.classList.add('animate-spin');
                setTimeout(() => {
                    refreshLocationBtn.classList.remove('animate-spin');
                }, 1000);
            })
        });
    </script>
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