HTML CSS AND JAVASCRIPT CODE FOR CALORIE BURN CALCULATOR

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Calorie Burn Calculator</title>
    <style>
        /* Global Reset */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: Arial, sans-serif;
        }

        /* Body and Background Animation */
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background: linear-gradient(135deg, #ffb3ba, #ffdfba);
            background-size: 400% 400%;
            animation: backgroundAnimate 10s infinite alternate;
            transition: background-color 0.3s ease;
            color: #333;
            overflow-y: auto;
        }

        @keyframes backgroundAnimate {
            0% { background-position: 0% 50%; }
            100% { background-position: 100% 50%; }
        }

        /* Calculator Container Styling */
        .calculator-container {
            background-color: #fff;
            padding: 2rem;
            box-shadow: 0px 6px 20px rgba(0, 0, 0, 0.2);
            border-radius: 20px;
            max-width: 600px;
            text-align: center;
            position: relative;
            transform: scale(1);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            border: 3px solid #ff6f61;
        }

        .calculator-container:hover {
            transform: scale(1.03);
        }

        /* Logo */
        .logo {
            width: 100px;
            margin-bottom: 1rem;
        }

        /* Title */
        h1 {
            font-size: 2.2rem;
            color: #444;
            margin-bottom: 1rem;
        }

        label {
            display: block;
            font-weight: bold;
            color: #555;
            margin: 0.8rem 0 0.3rem;
        }

        /* Input and Button Styling */
        input, select, button {
            width: 100%;
            padding: 0.75rem;
            margin: 0.5rem 0;
            border-radius: 8px;
            border: 1px solid #ccc;
            font-size: 1rem;
        }

        button {
            background-color: #ff6f61;
            color: #fff;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s ease;
            border: none;
        }

        button:hover {
            background-color: #ff4a3d;
        }

        /* Result Section */
        #result {
            margin-top: 1.5rem;
            font-size: 1.2rem;
            color: #333;
            padding: 0.5rem;
            border-radius: 8px;
            background-color: #f8f9fa;
            display: none;
            animation: slideIn 0.5s ease forwards;
        }

        .result-success {
            color: #28a745;
        }

        .result-error {
            color: #dc3545;
        }

        @keyframes slideIn {
            0% { opacity: 0; transform: translateY(30px); }
            100% { opacity: 1; transform: translateY(0); }
        }

        /* Dark Mode Toggle */
        .dark-mode-toggle {
            position: absolute;
            top: 10px;
            right: 10px;
            cursor: pointer;
            font-size: 1.5rem;
            color: #ff6f61;
        }

        /* Health Tips Section */
        .health-tips {
            font-size: 1rem;
            color: #555;
            padding-top: 0.5rem;
        }

        /* History Section */
        .history {
            margin-top: 1rem;
            font-size: 0.9rem;
            color: #444;
            border-top: 1px solid #ddd;
            padding-top: 0.5rem;
        }

        /* Chart Container */
        .chart-container {
            width: 100%;
            height: 200px;
            margin-top: 1rem;
        }
    </style>
</head>
<body>

    <div class="calculator-container">
        <!-- Dark Mode Toggle -->
        <span class="dark-mode-toggle" onclick="toggleDarkMode()">🌙</span>

        <!-- Logo -->
        <img src="https://via.placeholder.com/100" alt="Logo" class="logo">

        <h1>Calorie Burn Calculator 🔥</h1>
        <form id="calorieForm">
            <!-- Weight Input -->
            <label for="weight">Weight (kg) 🏋️‍♂️:</label>
            <input type="number" id="weight" placeholder="Enter your weight" required>

            <!-- Duration Input -->
            <label for="duration">Duration (minutes) ⏱️:</label>
            <input type="number" id="duration" placeholder="Enter duration of activity" required>

            <!-- Intensity Selector with Tooltip -->
            <label for="intensity">Intensity Level 💪:</label>
            <select id="intensity" title="Select activity intensity level">
                <option value="6">Light (e.g., walking) 🐢</option>
                <option value="8">Moderate (e.g., cycling, dancing) 🚴‍♀️</option>
                <option value="10">High (e.g., running, swimming) 🏃‍♂️</option>
            </select>

            <!-- Calculate and Clear Buttons -->
            <button type="button" onclick="calculateCalories()">Calculate</button>
            <button type="button" onclick="clearForm()" style="background-color: #dc3545; color: #fff;">Clear</button>
        </form>

        <!-- Result Display -->
        <div id="result"></div>

        <!-- Health Tips Display -->
        <div class="health-tips" id="healthTips"></div>

        <!-- History Display -->
        <div class="history" id="history"></div>

        <!-- Chart Display -->
        <div class="chart-container" id="chartContainer"></div>
    </div>

    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
    <script>
        // Chart Setup
        const ctx = document.getElementById('chartContainer').getContext('2d');
        let calorieChart = new Chart(ctx, {
            type: 'bar',
            data: {
                labels: [],
                datasets: [{
                    label: 'Calories Burned',
                    data: [],
                    backgroundColor: ['#ff6f61', '#ff8f61', '#ffaf61']
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false
            }
        });

        // Dark Mode Toggle
        function toggleDarkMode() {
            document.body.classList.toggle("dark-mode");
            document.body.style.background = document.body.classList.contains("dark-mode")
                ? "linear-gradient(135deg, #1a2a6c, #b21f1f)"
                : "linear-gradient(135deg, #ffb3ba, #ffdfba)";
        }

        // Calculate Calories
        function calculateCalories() {
            const weight = parseFloat(document.getElementById('weight').value);
            const duration = parseFloat(document.getElementById('duration').value);
            const intensity = parseFloat(document.getElementById('intensity').value);
            const resultDiv = document.getElementById('result');
            const historyDiv = document.getElementById('history');
            const healthTipsDiv = document.getElementById('healthTips');

            if (weight > 0 && duration > 0) {
                const caloriesBurned = (intensity * weight * (duration / 60)).toFixed(2);
                resultDiv.className = "result-success";
                resultDiv.innerHTML = `Calories Burned: <strong>${caloriesBurned} kcal</strong> 🎉`;
                resultDiv.style.display = "block";

                // Add to chart
                calorieChart.data.labels.push(`Activity ${calorieChart.data.labels.length + 1}`);
                calorieChart.data.datasets[0].data.push(caloriesBurned);
                calorieChart.update();

                // Update health tips
                healthTipsDiv.innerHTML = caloriesBurned > 200
                    ? "Awesome job! Keep it up! 🥇"
                    : "Great start! Try increasing intensity. 💪";

                // Update history
                historyDiv.innerHTML += `<p>Activity: ${caloriesBurned} kcal burned</p>`;
            } else {
                resultDiv.className = "result-error";
                resultDiv.innerHTML = "Please enter valid weight and duration.";
                resultDiv.style.display = "block";
            }
        }

        // Clear Form
        function clearForm() {
            document.getElementById('weight').value = '';
            document.getElementById('duration').value = '';
            document.getElementById('intensity').value = '6';
            document.getElementById('result').style.display = 'none';
            document.getElementById('healthTips').innerHTML = '';
        }
    </script>
</body>
</html>
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