// Initialize GSAP and ScrollTrigger
gsap.registerPlugin(ScrollTrigger);

// Loading Animation
window.addEventListener('load', function() {
    setTimeout(function() {
        document.getElementById('loading').classList.add('hidden');
    }, 1500);
});

// Parallax Effect
document.addEventListener('DOMContentLoaded', function() {
    const parallaxLayers = document.querySelectorAll('.parallax-layer');
    
    window.addEventListener('scroll', function() {
        const scrollPosition = window.pageYOffset;
        
        parallaxLayers.forEach(layer => {
            const depth = layer.getAttribute('data-depth') || 0;
            const translateY = -(scrollPosition * depth);
            layer.style.transform = `translateY(${translateY}px)`;
        });
    });
});

// Driver Slider
const driverTrack = document.querySelector('.driver-track');
const driverSlides = document.querySelectorAll('.driver-slide');
const prevBtn = document.querySelector('.driver-prev');
const nextBtn = document.querySelector('.driver-next');

let currentIndex = 0;
const slideCount = driverSlides.length;

function updateSlider() {
    const slideWidth = driverSlides[0].offsetWidth;
    driverTrack.style.transform = `translateX(-${currentIndex * slideWidth}px)`;
}

nextBtn.addEventListener('click', () => {
    currentIndex = (currentIndex + 1) % slideCount;
    updateSlider();
});

prevBtn.addEventListener('click', () => {
    currentIndex = (currentIndex - 1 + slideCount) % slideCount;
    updateSlider();
});

// Race Timeline Animations
gsap.utils.toArray('.race-item').forEach((item, i) => {
    gsap.fromTo(item, 
        { opacity: 0, y: 20 },
        {
            opacity: 1,
            y: 0,
            scrollTrigger: {
                trigger: item,
                start: "top 85%",
                toggleActions: "play none none reverse"
            },
            duration: 0.6,
            delay: i * 0.1
        }
    );
});

// Standings Table Animation
gsap.from('.standings-table tbody tr', {
    opacity: 0,
    y: 15,
    stagger: 0.1,
    duration: 0.5,
    scrollTrigger: {
        trigger: '.standings-table',
        start: "top 80%"
    }
});

// Count-up Animation
const countUpElements = document.querySelectorAll('[data-countup]');
const observerOptions = {
    root: null,
    rootMargin: '0px',
    threshold: 0.5
};

const observer = new IntersectionObserver((entries) => {
    entries.forEach(entry => {
        if (entry.isIntersecting) {
            const element = entry.target;
            const endValue = parseInt(element.getAttribute('data-countup'));
            let startValue = 0;
            
            const duration = 2000; // ms
            const increment = endValue / (duration / 16); // 16ms per frame
            
            const counter = setInterval(() => {
                startValue += increment;
                if (startValue >= endValue) {
                    startValue = endValue;
                    clearInterval(counter);
                }
                element.textContent = Math.floor(startValue);
            }, 16);
            
            observer.unobserve(element);
        }
    });
}, observerOptions);

countUpElements.forEach(el => {
    observer.observe(el);
});

// Sound Toggle
const soundToggle = document.getElementById('soundToggle');
const soundIcon = soundToggle.querySelector('i');

soundToggle.addEventListener('click', () => {
    // In a real implementation, this would toggle actual sound
    if (soundIcon.getAttribute('data-feather') === 'volume-2') {
        soundIcon.setAttribute('data-feather', 'volume-x');
    } else {
        soundIcon.setAttribute('data-feather', 'volume-2');
    }
    feather.replace();
});