```javascript
document.addEventListener('DOMContentLoaded', function() {
    // Initialize any interactive elements
    console.log('Learning App initialized');
    
    // Example quiz functionality
    const quizOptions = document.querySelectorAll('input[name="quiz"]');
    quizOptions.forEach(option => {
        option.addEventListener('change', function() {
            console.log('Selected option:', this.id);
        });
    });
    
    // Example course card click handler
    const courseCards = document.querySelectorAll('.course-card');
    courseCards.forEach(card => {
        card.addEventListener('click', function() {
            console.log('Course selected:', this.querySelector('h3').textContent);
        });
    });
    
    // Mobile menu toggle would go here
});
```