index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Fun Math Game</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background: linear-gradient(45deg, #6ab1e7, #4377c4);
            padding: 20px;
        }

        .container {
            background: white;
            padding: 2rem;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            max-width: 500px;
            width: 90%;
            text-align: center;
        }

        .header {
            margin-bottom: 2rem;
        }

        .title {
            font-size: 2rem;
            color: #4377c4;
            margin-bottom: 1rem;
        }

        .stats {
            display: flex;
            justify-content: space-around;
            margin-bottom: 1rem;
        }

        .stat-item {
            background: #f0f8ff;
            padding: 0.5rem 1rem;
            border-radius: 10px;
            font-weight: bold;
        }

        .question {
            font-size: 2.5rem;
            margin: 1.5rem 0;
            color: #333;
            animation: fadeIn 0.5s ease;
        }

        .options {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin: 2rem 0;
        }

        .option {
            padding: 1rem;
            border: 2px solid #4377c4;
            border-radius: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1.2rem;
            background: white;
        }

        .option:hover {
            background: #4377c4;
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(67, 119, 196, 0.3);
        }

        .feedback {
            margin: 1rem 0;
            font-size: 1.3rem;
            min-height: 1.5em;
            font-weight: bold;
        }

        .correct {
            color: #2ecc71;
            animation: bounce 0.5s ease;
        }

        .wrong {
            color: #e74c3c;
            animation: shake 0.5s ease;
        }

        .next-btn {
            background: #4377c4;
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 10px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            font-weight: bold;
        }

        .next-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(67, 119, 196, 0.3);
        }

        .timer {
            width: 100%;
            height: 5px;
            background: #eee;
            margin-bottom: 1rem;
            border-radius: 5px;
            overflow: hidden;
        }

        .timer-bar {
            height: 100%;
            background: #4377c4;
            width: 100%;
            transition: width 1s linear;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes bounce {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        @media (max-width: 480px) {
            .container {
                padding: 1rem;
            }
            
            .question {
                font-size: 1.8rem;
            }
            
            .option {
                font-size: 1rem;
                padding: 0.8rem;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">
            <h1 class="title">Fun Math Game 🎮</h1>
            <div class="timer">
                <div class="timer-bar" id="timer-bar"></div>
            </div>
            <div class="stats">
                <div class="stat-item">Score: <span id="score">0</span></div>
                <div class="stat-item">Level: <span id="level">1</span></div>
                <div class="stat-item">Streak: <span id="streak">0</span></div>
            </div>
        </div>
        <div class="question" id="question"></div>
        <div class="options" id="options"></div>
        <div class="feedback" id="feedback"></div>
        <button class="next-btn" onclick="nextQuestion()">Next Question ➡️</button>
    </div>

    <script>
        let score = 0;
        let level = 1;
        let streak = 0;
        let correctAnswer;
        let timerInterval;

        function startTimer() {
            clearInterval(timerInterval);
            const timerBar = document.getElementById('timer-bar');
            timerBar.style.width = '100%';
            
            let timeLeft = 100;
            timerInterval = setInterval(() => {
                timeLeft -= 1;
                timerBar.style.width = timeLeft + '%';
                
                if (timeLeft <= 0) {
                    clearInterval(timerInterval);
                    checkAnswer(null);
                }
            }, 100);
        }

        function generateQuestion() {
            const operations = ['+', '-', '*', '/'];
            const operation = operations[Math.floor(Math.random() * operations.length)];
            let num1, num2;
            const maxNum = 10 + (level * 5); // Increase difficulty with level

            switch(operation) {
                case '+':
                    num1 = Math.floor(Math.random() * maxNum);
                    num2 = Math.floor(Math.random() * maxNum);
                    correctAnswer = num1 + num2;
                    break;
                case '-':
                    num1 = Math.floor(Math.random() * maxNum);
                    num2 = Math.floor(Math.random() * num1);
                    correctAnswer = num1 - num2;
                    break;
                case '*':
                    num1 = Math.floor(Math.random() * (level + 5));
                    num2 = Math.floor(Math.random() * (level + 5));
                    correctAnswer = num1 * num2;
                    break;
                case '/':
                    num2 = Math.floor(Math.random() * (level + 3)) + 1;
                    correctAnswer = Math.floor(Math.random() * (level + 3));
                    num1 = correctAnswer * num2;
                    break;
            }

            document.getElementById('question').textContent = `${num1} ${operation} ${num2} = ?`;
            generateOptions(correctAnswer);
            startTimer();
        }

        function generateOptions(correct) {
            const options = [correct];
            const range = Math.max(10, correct * 0.5);
            
            while(options.length < 4) {
                const randomOption = correct + Math.floor(Math.random() * range) - (range/2);
                if(!options.includes(randomOption) && randomOption >= 0) {
                    options.push(randomOption);
                }
            }

            options.sort(() => Math.random() - 0.5);

            const optionsContainer = document.getElementById('options');
            optionsContainer.innerHTML = '';
            
            options.forEach(option => {
                const button = document.createElement('div');
                button.className = 'option';
                button.textContent = option;
                button.onclick = () => checkAnswer(option);
                optionsContainer.appendChild(button);
            });
        }

        function checkAnswer(selected) {
            clearInterval(timerInterval);
            const feedback = document.getElementById('feedback');
            
            if(selected === correctAnswer) {
                score += (level * 10);
                streak++;
                if(streak % 3 === 0) level++;
                
                document.getElementById('score').textContent = score;
                document.getElementById('level').textContent = level;
                document.getElementById('streak').textContent = streak;
                
                feedback.textContent = "Awesome! 🎉";
                feedback.className = 'feedback correct';
            } else {
                streak = 0;
                document.getElementById('streak').textContent = streak;
                feedback.textContent = selected === null ? "Time's up! ⏰" : "Wrong! Try again! 😢";
                feedback.className = 'feedback wrong';
            }

            document.querySelectorAll('.option').forEach(option => {
                option.style.pointerEvents = 'none';
                if(parseInt(option.textContent) === correctAnswer) {
                    option.style.background = '#2ecc71';
                    option.style.color = 'white';
                } else if(parseInt(option.textContent) === selected && selected !== correctAnswer) {
                    option.style.background = '#e74c3c';
                    option.style.color = 'white';
                }
            });
        }

        function nextQuestion() {
            document.getElementById('feedback').textContent = '';
            generateQuestion();
        }

        // Start game
        generateQuestion();
    </script>
</body>
</html>