// FAQ Accordion
document.querySelectorAll('.faq-question').forEach(button => {
  button.addEventListener('click', () => {
    const item = button.parentElement;
    const isActive = item.classList.contains('active');
    
    document.querySelectorAll('.faq-item').forEach(i => i.classList.remove('active'));
    
    if (!isActive) {
      item.classList.add('active');
    }
  });
});

// Smooth scroll
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
  anchor.addEventListener('click', function(e) {
    e.preventDefault();
    const target = document.querySelector(this.getAttribute('href'));
    if (target) {
      target.scrollIntoView({
        behavior: 'smooth',
        block: 'start'
      });
    }
  });
});

// Header scroll effect
let lastScroll = 0;
const header = document.querySelector('.header');

window.addEventListener('scroll', () => {
  const currentScroll = window.pageYOffset;
  
  if (currentScroll > 100) {
    header.style.background = 'rgba(15, 23, 42, 0.98)';
  } else {
    header.style.background = 'rgba(15, 23, 42, 0.95)';
  }
  
  lastScroll = currentScroll;
});

// Animate elements on scroll
const observerOptions = {
  threshold: 0.1,
  rootMargin: '0px 0px -50px 0px'
};

const observer = new IntersectionObserver((entries) => {
  entries.forEach(entry => {
    if (entry.isIntersecting) {
      entry.target.style.opacity = '1';
      entry.target.style.transform = 'translateY(0)';
    }
  });
}, observerOptions);

document.querySelectorAll('.feature-card, .instruction-category, .benefit-item, .faq-item').forEach(el => {
  el.style.opacity = '0';
  el.style.transform = 'translateY(30px)';
  el.style.transition = 'opacity 0.6s ease, transform 0.6s ease';
  observer.observe(el);
});