script.js

// Quiz Application State
let quizData = [];
let currentLevel = 1;
let currentQuestionIndex = 0;
let currentScore = 0;
let currentStreak = 0;
let levelQuestions = [];
let answeredQuestions = new Set();
let usedQuestionsInLevel = new Set();
let consecutiveWrongAnswers = 0;
let gameStats = {
    totalQuestions: 0,
    correctAnswers: 0,
    levelScores: {},
    levelStreaks: {},
    levelCorrectAnswers: {}
};

// Questions per level configuration
const questionsPerLevel = {
    1: 5,
    2: 8,
    3: 10,
    4: 15
};

// Witty success messages for each level
const successMessages = {
    1: [
        "🏡 Cottage genius! You're building a solid foundation!",
        "🎯 Bullseye! Your architectural instincts are spot on!",
        "🌟 Rising star! You're mastering the basics beautifully!",
        "💪 Foundation strong! You're crushing these fundamentals!",
        "🎨 Artistic eye! You see architecture like a pro!",
        "🚀 Taking off! Your knowledge is soaring!",
        "💎 Diamond in the rough! You're shining bright!",
        "🎪 Showstopper! You're putting on quite a performance!",
        "🏆 Champion material! You're born for this!",
        "✨ Magical touch! You make architecture look easy!",
        "🎭 Star quality! You're stealing the architectural show!",
        "🔥 On fire! You're absolutely unstoppable!",
        "🎪 Center stage! All eyes are on your brilliance!",
        "💫 Shooting star! You're lighting up the architectural sky!",
        "🎨 Masterpiece! You're creating architectural art!",
        "🌟 Supernova! You're exploding with knowledge!",
        "🎯 Perfect aim! You never miss the mark!",
        "💎 Precious talent! You're a rare architectural gem!",
        "🚀 Rocket fuel! You're powered by pure genius!",
        "🎪 Standing ovation! You deserve all the applause!"
    ],
    2: [
        "🏠 Mansion master! You're living in architectural luxury!",
        "🎭 Regional royalty! You're ruling the architectural realm!",
        "🌟 Cultural connoisseur! You understand architectural heritage!",
        "💎 Regional gem! You're uncovering architectural treasures!",
        "🎨 Heritage hero! You're preserving architectural beauty!",
        "🚀 Regional rocket! You're exploring architectural frontiers!",
        "💫 Cultural star! You're shining across architectural borders!",
        "🎪 Regional show! You're the main attraction!",
        "🏆 Heritage champion! You're defending architectural traditions!",
        "✨ Cultural magic! You're weaving architectural stories!",
        "🎭 Regional drama! You're starring in architectural excellence!",
        "🔥 Cultural fire! You're burning with architectural passion!",
        "💎 Regional diamond! You're cutting through architectural complexity!",
        "🌟 Heritage hero! You're saving architectural legacies!",
        "🎨 Cultural canvas! You're painting architectural masterpieces!",
        "🚀 Regional explorer! You're discovering architectural wonders!",
        "💫 Cultural comet! You're streaking through architectural history!",
        "🎪 Regional festival! You're celebrating architectural diversity!",
        "🏆 Cultural crown! You're wearing architectural royalty!",
        "✨ Heritage harmony! You're orchestrating architectural beauty!",
        "🎭 Regional legend! You're becoming an architectural icon!"
    ],
    3: [
        "🏘️ Modern marvel! You're ahead of the architectural curve!",
        "🎯 Advanced ace! You're mastering complex concepts!",
        "🌟 Sophisticated star! You're thinking like an architectural genius!",
        "💎 Modern gem! You're cutting-edge in every way!",
        "🎨 Contemporary creator! You're shaping architectural futures!",
        "🚀 Advanced accelerator! You're pushing architectural boundaries!",
        "💫 Sophisticated sparkle! You're radiating architectural brilliance!",
        "🎪 Modern masterpiece! You're creating architectural innovation!",
        "🏆 Advanced champion! You're conquering architectural complexity!",
        "✨ Sophisticated sorcery! You're casting architectural spells!",
        "🎭 Modern maestro! You're conducting architectural symphonies!",
        "🔥 Advanced inferno! You're burning with architectural intensity!",
        "💎 Contemporary crown! You're wearing architectural royalty!",
        "🌟 Sophisticated supernova! You're exploding with architectural insight!",
        "🎨 Modern magician! You're performing architectural miracles!",
        "🚀 Advanced astronaut! You're exploring architectural galaxies!",
        "💫 Sophisticated star! You're lighting up architectural skies!",
        "🎪 Contemporary carnival! You're celebrating architectural innovation!",
        "🏆 Advanced architect! You're building architectural dreams!",
        "✨ Modern magic! You're creating architectural wonders!",
        "🎭 Sophisticated sensation! You're the talk of architectural town!"
    ],
    4: [
        "🏙️ Skyline superstar! You're reaching architectural heights!",
        "🎯 Elite expert! You're operating at architectural peak performance!",
        "🌟 Luxury legend! You're living in architectural excellence!",
        "💎 Elite diamond! You're the crown jewel of architecture!",
        "🎨 Skyline artist! You're painting the architectural heavens!",
        "🚀 Elite rocket! You're launching into architectural orbit!",
        "💫 Luxury luminary! You're the brightest architectural star!",
        "🎪 Elite extravaganza! You're throwing architectural parties!",
        "🏆 Skyline champion! You're conquering architectural summits!",
        "✨ Elite enchantment! You're casting architectural spells!",
        "🎭 Luxury legend! You're starring in architectural blockbusters!",
        "🔥 Elite inferno! You're burning with architectural passion!",
        "💎 Skyline sapphire! You're precious architectural treasure!",
        "🌟 Luxury luminary! You're illuminating architectural paths!",
        "🎨 Elite artist! You're creating architectural masterpieces!",
        "🚀 Skyline shuttle! You're traveling architectural galaxies!",
        "💫 Elite energy! You're powering architectural innovation!",
        "🎪 Luxury gala! You're hosting architectural celebrations!",
        "🏆 Elite emperor! You're ruling the architectural empire!",
        "✨ Skyline sorcery! You're performing architectural magic!",
        "🎭 Luxury legend! You're becoming architectural royalty!"
    ]
};

// Motivational quotes for when users get 2 wrong answers in a row
const motivationalQuotes = {
    1: [
        "Every great architect was once a beginner. Keep building your foundation!",
        "Mistakes are the stepping stones to architectural mastery. Keep going!",
        "The best buildings are built on strong foundations. You're getting there!",
        "Architecture is a journey, not a destination. You're on the right path!",
        "Every wrong answer is a lesson learned. You're growing stronger!",
        "The foundation of success is persistence. Don't give up now!",
        "Great architects learn from every mistake. You're becoming great!",
        "Your architectural journey is just beginning. Keep exploring!",
        "Every expert was once a student. You're learning beautifully!",
        "The path to mastery is paved with lessons. You're on track!",
        "Architecture rewards those who persevere. Keep pushing forward!",
        "Your foundation is getting stronger with every question!",
        "Mistakes are just practice for perfection. You're practicing well!",
        "Every building starts with a single brick. You're building something amazing!",
        "The best architects never stop learning. You're a lifelong learner!",
        "Your architectural instincts are developing. Trust the process!",
        "Every challenge makes you stronger. You're getting stronger!",
        "The foundation of excellence is built one step at a time!",
        "You're not failing, you're learning. Keep learning!",
        "Architecture is about persistence. You're showing great persistence!"
    ],
    2: [
        "Regional architecture teaches us about cultural diversity. Keep exploring!",
        "Every region has its own architectural story. You're learning them all!",
        "Cultural understanding comes with practice. You're practicing well!",
        "Regional knowledge is architectural wisdom. You're gaining wisdom!",
        "Every mistake is a step toward cultural understanding!",
        "Architectural heritage is worth preserving. You're learning to preserve it!",
        "Regional differences make architecture beautiful. You're seeing the beauty!",
        "Cultural sensitivity is architectural intelligence. You're becoming intelligent!",
        "Every region has architectural treasures. You're discovering them!",
        "Regional knowledge is global wisdom. You're becoming globally wise!",
        "Architectural diversity is cultural richness. You're experiencing richness!",
        "Every culture has architectural lessons. You're learning them!",
        "Regional understanding is architectural empathy. You're developing empathy!",
        "Cultural knowledge is architectural power. You're gaining power!",
        "Every region has architectural secrets. You're uncovering them!",
        "Regional wisdom is architectural insight. You're gaining insight!",
        "Cultural appreciation is architectural growth. You're growing!",
        "Every mistake teaches cultural sensitivity. You're becoming sensitive!",
        "Regional knowledge is architectural enlightenment. You're becoming enlightened!",
        "Cultural understanding is architectural mastery. You're mastering it!"
    ],
    3: [
        "Advanced concepts challenge even the best architects. You're up for the challenge!",
        "Complexity is the playground of architectural genius. You're playing well!",
        "Advanced thinking comes with advanced practice. You're practicing advanced!",
        "Sophisticated concepts require sophisticated minds. You have one!",
        "Every complex problem has an elegant solution. You're finding them!",
        "Advanced architecture is about pushing boundaries. You're pushing them!",
        "Sophisticated thinking is architectural evolution. You're evolving!",
        "Complex problems build complex solutions. You're building solutions!",
        "Advanced knowledge is architectural power. You're gaining power!",
        "Sophisticated understanding comes with time. You're using time wisely!",
        "Complex concepts are architectural puzzles. You're solving puzzles!",
        "Advanced thinking is architectural innovation. You're innovating!",
        "Sophisticated problems require sophisticated approaches. You're approaching well!",
        "Complex architecture is beautiful architecture. You're seeing beauty!",
        "Advanced concepts are architectural frontiers. You're exploring frontiers!",
        "Sophisticated thinking is architectural wisdom. You're gaining wisdom!",
        "Complex problems are architectural opportunities. You're seizing opportunities!",
        "Advanced knowledge is architectural insight. You're gaining insight!",
        "Sophisticated understanding is architectural mastery. You're mastering it!",
        "Complex concepts are architectural challenges. You're meeting challenges!"
    ],
    4: [
        "Elite architecture is for elite minds. You have an elite mind!",
        "Skyline success comes to those who reach for it. You're reaching high!",
        "Luxury architecture requires luxury thinking. You're thinking luxuriously!",
        "Elite knowledge is architectural excellence. You're pursuing excellence!",
        "Skyline heights are reached one step at a time. Keep climbing!",
        "Luxury understanding comes with luxury effort. You're putting in effort!",
        "Elite architecture is about elite standards. You're meeting standards!",
        "Skyline success is architectural achievement. You're achieving!",
        "Luxury knowledge is architectural power. You're gaining power!",
        "Elite thinking is architectural innovation. You're innovating!",
        "Skyline heights require skyline vision. You have vision!",
        "Luxury architecture is about luxury details. You're noticing details!",
        "Elite success comes to elite learners. You're an elite learner!",
        "Skyline achievement is architectural mastery. You're mastering!",
        "Luxury understanding is architectural wisdom. You're gaining wisdom!",
        "Elite architecture is for elite architects. You're becoming elite!",
        "Skyline heights are for skyline dreamers. You're dreaming big!",
        "Luxury knowledge is architectural insight. You're gaining insight!",
        "Elite thinking is architectural evolution. You're evolving!",
        "Skyline success is architectural destiny. You're destined for success!"
    ]
};

// DOM Elements
const screens = {
    welcome: document.getElementById('welcome-screen'),
    quiz: document.getElementById('quiz-screen'),
    levelComplete: document.getElementById('level-complete-screen'),
    gameComplete: document.getElementById('game-complete-screen')
};

const elements = {
    currentLevel: document.getElementById('current-level'),
    currentQuestion: document.getElementById('current-question'),
    currentScore: document.getElementById('current-score'),
    currentStreak: document.getElementById('current-streak'),
    progressFill: document.getElementById('progress-fill'),
    categoryBadge: document.getElementById('category-badge'),
    questionText: document.getElementById('question-text'),
    optionA: document.getElementById('option-a'),
    optionB: document.getElementById('option-b'),
    optionC: document.getElementById('option-c'),
    optionD: document.getElementById('option-d'),
    nextBtn: document.getElementById('next-btn'),
    feedbackOverlay: document.getElementById('feedback-overlay'),
    feedbackIcon: document.getElementById('feedback-icon'),
    feedbackTitle: document.getElementById('feedback-title'),
    feedbackMessage: document.getElementById('feedback-message'),
    feedbackStreak: document.getElementById('feedback-streak'),
    feedbackScore: document.getElementById('feedback-score')
};

// Motivational messages for each level
const motivationMessages = {
    1: [
        "You're halfway through the Cottage Foundations! Your basics are strong!",
        "Keep going! Your foundation is solid!"
    ],
    2: [
        "Halfway through Mansion Dreams! You're building up your knowledge!",
        "Impressive! Your regional expertise is showing!"
    ],
    3: [
        "Modern Marvels halfway! You're mastering advanced concepts!",
        "Great work! Your modern mind is shining!"
    ],
    4: [
        "Skyline Elite halfway! You're reaching new heights!",
        "Elite performance! Your architectural instincts are top-notch!"
    ]
};

// Initialize the application
document.addEventListener('DOMContentLoaded', function() {
    loadQuizData();
    setupEventListeners();
    // Always start fresh when page loads
    resetQuizState();
    
    // Load saved theme
    const savedTheme = localStorage.getItem('selectedTheme');
    if (savedTheme) {
        changeTheme(savedTheme);
    }
    
    const closeBtn = document.getElementById('motivation-close-btn');
    if (closeBtn) {
        closeBtn.addEventListener('click', hideMotivationPopup);
    }
    const successCloseBtn = document.getElementById('success-close-btn');
    if (successCloseBtn) {
        successCloseBtn.addEventListener('click', hideSuccessPopup);
    }
});

// Reset quiz state to ensure fresh start
function resetQuizState() {
    currentLevel = 1;
    currentQuestionIndex = 0;
    currentScore = 0;
    currentStreak = 0;
    consecutiveWrongAnswers = 0;
    levelQuestions = [];
    answeredQuestions.clear();
    usedQuestionsInLevel.clear();
    gameStats = {
        totalQuestions: 0,
        correctAnswers: 0,
        levelScores: {},
        levelStreaks: {},
        levelCorrectAnswers: {}
    };
}

// Load quiz data from JSON file
async function loadQuizData() {
    try {
        const response = await fetch('corrected_level_1_questions.json');
        quizData = await response.json();
        console.log('Quiz data loaded:', quizData.length, 'questions');
    } catch (error) {
        console.error('Error loading quiz data:', error);
        // Fallback data for testing
        quizData = getFallbackData();
    }
}

// Setup event listeners
function setupEventListeners() {
    // Start button
    document.getElementById('start-btn').addEventListener('click', startQuiz);
    
    // Level item clicks
    document.querySelectorAll('.level-item').forEach(item => {
        item.addEventListener('click', () => {
            const level = parseInt(item.dataset.level);
            startQuizFromLevel(level);
        });
    });
    
    // Theme buttons
    document.querySelectorAll('.theme-btn').forEach(btn => {
        btn.addEventListener('click', () => {
            const theme = btn.dataset.theme;
            changeTheme(theme);
        });
    });
    
    // Option buttons
    document.querySelectorAll('.option-btn').forEach(btn => {
        btn.addEventListener('click', () => selectOption(btn.dataset.option));
    });
    
    // Next button
    elements.nextBtn.addEventListener('click', nextQuestion);
    
    // Level complete buttons
    document.getElementById('next-level-btn').addEventListener('click', nextLevel);
    document.getElementById('retry-level-btn').addEventListener('click', retryLevel);
    
    // Game complete buttons
    document.getElementById('play-again-btn').addEventListener('click', restartGame);
    document.getElementById('share-btn').addEventListener('click', shareResults);
    
    // Home button (will be added to HTML)
    const homeBtn = document.getElementById('home-btn');
    if (homeBtn) {
        homeBtn.addEventListener('click', goHome);
    }
}

// Start the quiz
function startQuiz() {
    resetQuizState();
    loadLevel(currentLevel);
    showScreen('quiz');
}

// Start quiz from a specific level
function startQuizFromLevel(level) {
    resetQuizState();
    currentLevel = level;
    loadLevel(currentLevel);
    showScreen('quiz');
}

// Load a specific level
function loadLevel(level) {
    currentLevel = level;
    currentQuestionIndex = 0;
    usedQuestionsInLevel.clear();
    
    // Get questions for this level
    const levelQuestionsPool = quizData.filter(q => q.level === level);
    
    // Reset level-specific stats
    gameStats.levelScores[level] = 0;
    gameStats.levelStreaks[level] = 0;
    gameStats.levelCorrectAnswers[level] = 0;
    
    updateUI();
    loadQuestion();
}

// Load current question
function loadQuestion() {
    const maxQuestions = questionsPerLevel[currentLevel];
    if (currentQuestionIndex >= maxQuestions) {
        completeLevel();
        return;
    }
    
    // Show motivation at halfway (after answering half the questions)
    if (
        currentQuestionIndex > 0 &&
        currentQuestionIndex === Math.floor(maxQuestions / 2)
    ) {
        showMotivationPopup(currentLevel);
    }
    
    // Get questions for this level that haven't been used yet
    const levelQuestionsPool = quizData.filter(q => q.level === currentLevel);
    const availableQuestions = levelQuestionsPool.filter(q => !usedQuestionsInLevel.has(q.id));
    
    // If we've used all questions, reset the used questions set for fresh randomization
    if (availableQuestions.length === 0) {
        usedQuestionsInLevel.clear();
        const resetAvailableQuestions = levelQuestionsPool;
        levelQuestions = shuffleArray(resetAvailableQuestions).slice(0, maxQuestions);
    } else {
        // Select from available questions
        levelQuestions = shuffleArray(availableQuestions).slice(0, maxQuestions);
    }
    
    const question = levelQuestions[currentQuestionIndex];
    usedQuestionsInLevel.add(question.id);
    
    // Update UI elements
    elements.currentLevel.textContent = currentLevel;
    elements.currentQuestion.textContent = `${currentQuestionIndex + 1}/${maxQuestions}`;
    elements.categoryBadge.textContent = question.category;
    elements.questionText.textContent = question.question;
    elements.optionA.textContent = question.options.A;
    elements.optionB.textContent = question.options.B;
    elements.optionC.textContent = question.options.C;
    elements.optionD.textContent = question.options.D;
    
    // Reset option buttons
    document.querySelectorAll('.option-btn').forEach(btn => {
        btn.classList.remove('selected', 'correct', 'incorrect');
        btn.disabled = false;
    });
    
    elements.nextBtn.disabled = true;
    updateProgress();
}

// Handle option selection
function selectOption(selectedOption) {
    const question = levelQuestions[currentQuestionIndex];
    const correctOption = question.correct_answer;
    const isCorrect = selectedOption === correctOption;
    
    // Disable all options
    document.querySelectorAll('.option-btn').forEach(btn => {
        btn.disabled = true;
    });
    
    // Mark selected option
    const selectedBtn = document.querySelector(`[data-option="${selectedOption}"]`);
    selectedBtn.classList.add('selected');
    
    // Mark correct/incorrect
    if (isCorrect) {
        selectedBtn.classList.add('correct');
        currentScore += 10;
        currentStreak++;
        gameStats.correctAnswers++;
        gameStats.levelScores[currentLevel] += 10;
        gameStats.levelStreaks[currentLevel] = Math.max(gameStats.levelStreaks[currentLevel], currentStreak);
        gameStats.levelCorrectAnswers[currentLevel]++;
        
        // Reset consecutive wrong answers
        consecutiveWrongAnswers = 0;
        
        // Show success popup only at midway point (except for Level 1)
        const maxQuestions = questionsPerLevel[currentLevel];
        const isMidway = currentQuestionIndex === Math.floor(maxQuestions / 2) - 1;
        
        if (isMidway && currentLevel > 1) {
            showSuccessPopup(currentLevel);
        }
    } else {
        selectedBtn.classList.add('incorrect');
        // Reset streak on wrong answer but keep score
        currentStreak = 0;
        
        // Increment consecutive wrong answers
        consecutiveWrongAnswers++;
        
        // Show motivational quote only after 3+ consecutive wrong answers
        if (consecutiveWrongAnswers >= 3) {
            showMotivationalQuote(currentLevel);
        }
        
        // Show correct answer
        const correctBtn = document.querySelector(`[data-option="${correctOption}"]`);
        correctBtn.classList.add('correct');
    }
    
    gameStats.totalQuestions++;
    answeredQuestions.add(question.id);
    
    // Update UI
    updateUI();
    
    // Enable next button
    elements.nextBtn.disabled = false;
}

// Move to next question
function nextQuestion() {
    currentQuestionIndex++;
    loadQuestion();
}

// Complete current level
function completeLevel() {
    const levelScore = gameStats.levelScores[currentLevel];
    const levelStreak = gameStats.levelStreaks[currentLevel];
    const maxQuestions = questionsPerLevel[currentLevel];
    const levelCorrectAnswers = gameStats.levelCorrectAnswers[currentLevel] || 0;
    const accuracy = Math.round((levelCorrectAnswers / maxQuestions) * 100);
    
    // Check if all questions were answered correctly
    const allCorrect = levelCorrectAnswers === maxQuestions;
    
    // Update level complete screen
    document.getElementById('completed-level').textContent = currentLevel;
    document.getElementById('level-score').textContent = levelScore;
    document.getElementById('level-accuracy').textContent = `${accuracy}%`;
    document.getElementById('level-streak').textContent = levelStreak;
    
    // Update feedback message
    const feedbackElement = document.getElementById('level-feedback');
    if (allCorrect) {
        feedbackElement.innerHTML = '<p>Perfect! You answered all questions correctly. Ready for the next challenge!</p>';
        document.getElementById('next-level-btn').style.display = 'inline-block';
    } else {
        feedbackElement.innerHTML = '<p>Good effort! You need to answer all questions correctly to advance to the next level.</p>';
        document.getElementById('next-level-btn').style.display = 'none';
    }
    
    showScreen('levelComplete');
}

// Move to next level
function nextLevel() {
    if (currentLevel < 4) {
        currentLevel++;
        loadLevel(currentLevel);
        showScreen('quiz');
    } else {
        completeGame();
    }
}

// Retry current level
function retryLevel() {
    loadLevel(currentLevel);
    showScreen('quiz');
}

// Go home (back to welcome screen)
function goHome() {
    resetQuizState();
    showScreen('welcome');
}

// Complete the entire game
function completeGame() {
    const totalScore = Object.values(gameStats.levelScores).reduce((sum, score) => sum + score, 0);
    const overallAccuracy = Math.round((gameStats.correctAnswers / gameStats.totalQuestions) * 100);
    
    document.getElementById('final-score').textContent = totalScore;
    document.getElementById('final-accuracy').textContent = `${overallAccuracy}%`;
    document.getElementById('final-questions').textContent = gameStats.totalQuestions;
    
    showScreen('gameComplete');
}

// Restart the game
function restartGame() {
    resetQuizState();
    showScreen('welcome');
}

// Share results (placeholder)
function shareResults() {
    const text = `I completed the Architecture Quiz with a score of ${document.getElementById('final-score').textContent} points! 🏛️`;
    
    if (navigator.share) {
        navigator.share({
            title: 'Architecture Quiz Results',
            text: text
        });
    } else {
        // Fallback: copy to clipboard
        navigator.clipboard.writeText(text).then(() => {
            alert('Results copied to clipboard!');
        });
    }
}

// Update UI elements
function updateUI() {
    elements.currentScore.textContent = currentScore;
    elements.currentStreak.textContent = currentStreak;
}

// Update progress bar
function updateProgress() {
    const maxQuestions = questionsPerLevel[currentLevel];
    const progress = ((currentQuestionIndex + 1) / maxQuestions) * 100;
    elements.progressFill.style.width = `${progress}%`;
}

// Show specific screen
function showScreen(screenName) {
    Object.values(screens).forEach(screen => {
        screen.classList.remove('active');
    });
    screens[screenName].classList.add('active');
}

// Utility function to shuffle array
function shuffleArray(array) {
    const shuffled = [...array];
    for (let i = shuffled.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        [shuffled[i], shuffled[j]] = [shuffled[j], shuffled[i]];
    }
    return shuffled;
}

// Fallback data in case JSON loading fails
function getFallbackData() {
    return [
        {
            id: 1,
            level: 1,
            category: "Basic Definitions",
            question: "What is the primary purpose of a 'facade' in architecture?",
            options: {
                "A": "To provide structural support",
                "B": "To create an internal courtyard",
                "C": "To serve as the front or main exterior elevation of a building",
                "D": "To collect rainwater"
            },
            correct_answer: "C"
        },
        {
            id: 2,
            level: 1,
            category: "Basic Definitions",
            question: "A 'plinth' in architecture refers to what?",
            options: {
                "A": "A decorative ceiling element",
                "B": "The lowest square part of the base of a column or pedestal",
                "C": "A type of window frame",
                "D": "A roof drainage system"
            },
            correct_answer: "B"
        }
        // Add more fallback questions as needed
    ];
}

// Show motivational pop-up
function showMotivationPopup(level) {
    const popup = document.getElementById('motivation-popup');
    const title = document.getElementById('motivation-title');
    const message = document.getElementById('motivation-message');
    const quoteElement = document.getElementById('motivational-quote');
    // Pick a random message for variety
    const messages = motivationMessages[level] || ["You're doing great! Keep going!"];
    const msg = messages[Math.floor(Math.random() * messages.length)];
    title.textContent = "You're halfway there!";
    message.textContent = msg;
    quoteElement.style.display = 'none';
    popup.classList.add('show');
}

// Hide motivational pop-up
function hideMotivationPopup() {
    document.getElementById('motivation-popup').classList.remove('show');
}

// Show success pop-up
function showSuccessPopup(level) {
    const popup = document.getElementById('success-popup');
    const title = document.getElementById('success-title');
    const message = document.getElementById('success-message');
    // Pick a random message for variety
    const messages = successMessages[level] || ["You're doing great! Keep going!"];
    const msg = messages[Math.floor(Math.random() * messages.length)];
    title.textContent = "Congratulations!";
    message.textContent = msg;
    popup.classList.add('show');
}

// Hide success pop-up
function hideSuccessPopup() {
    document.getElementById('success-popup').classList.remove('show');
}

// Show motivational quote
function showMotivationalQuote(level) {
    const popup = document.getElementById('motivation-popup');
    const title = document.getElementById('motivation-title');
    const message = document.getElementById('motivation-message');
    const quoteElement = document.getElementById('motivational-quote');
    const quotes = motivationalQuotes[level] || ["Keep learning and growing!"];
    const quote = quotes[Math.floor(Math.random() * quotes.length)];
    
    title.textContent = "Don't Give Up!";
    message.textContent = "Remember, every great architect faced challenges!";
    quoteElement.textContent = quote;
    quoteElement.style.display = 'block';
    popup.classList.add('show');
}

// Change theme
function changeTheme(theme) {
    // Remove all theme classes
    document.body.classList.remove('ocean-theme', 'sunset-theme', 'forest-theme');
    
    // Add new theme class
    if (theme !== 'default') {
        document.body.classList.add(theme + '-theme');
    }
    
    // Update active button
    document.querySelectorAll('.theme-btn').forEach(btn => {
        btn.classList.remove('active');
    });
    document.querySelector(`[data-theme="${theme}"]`).classList.add('active');
    
    // Save theme preference
    localStorage.setItem('selectedTheme', theme);
}