// Email subscription functionality
document.getElementById("notify-button").addEventListener("click", async () => {
    const emailInput = document.getElementById("email-input");
    const email = emailInput.value.trim();
    
    if (email && /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
        try {
            // Simulate API call - replace with your actual endpoint
            const response = await fetch("/subscribe", {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify({ email }),
            });
            
            const result = await response.json();
            alert(result.message || "Thank you for subscribing!");
            emailInput.value = "";
        } catch (error) {
            console.error("Error during subscribe fetch:", error);
            alert("Thank you! We'll notify you when we launch.");
            emailInput.value = "";
        }
    } else {
        alert("Please enter a valid email address.");
    }
});

// Smooth navbar background on scroll
window.addEventListener('scroll', function() {
    const navbar = document.querySelector('.navbar');
    if (window.scrollY > 100) {
        navbar.style.background = 'rgba(255, 255, 255, 0.98)';
        navbar.style.boxShadow = '0 2px 20px rgba(0, 0, 0, 0.1)';
    } else {
        navbar.style.background = 'rgba(255, 255, 255, 0.95)';
        navbar.style.boxShadow = 'none';
    }
});

// Add animation on scroll for feature cards
const observerOptions = {
    threshold: 0.1,
    rootMargin: '0px 0px -50px 0px'
};

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

// Initially hide feature cards for animation
document.querySelectorAll('.feature-card').forEach(card => {
    card.style.opacity = '0';
    card.style.transform = 'translateY(30px)';
    card.style.transition = 'opacity 0.6s ease, transform 0.6s ease';
    observer.observe(card);
});

// Add smooth scroll behavior for navigation
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function (e) {
        e.preventDefault();
        document.querySelector(this.getAttribute('href')).scrollIntoView({
            behavior: 'smooth'
        });
    });
});

// Add loading states for newsletter cards
window.addEventListener('load', function() {
    const cards = document.querySelectorAll('.newsletter-card');
    cards.forEach((card, index) => {
        setTimeout(() => {
            card.style.opacity = '1';
            card.style.transform = 'translateY(0)';
        }, index * 100);
    });
});

// Enhanced navbar scroll effect
window.addEventListener('scroll', function() {
    const navbar = document.querySelector('.navbar');
    if (window.scrollY > 50) {
        navbar.style.background = 'rgba(255, 255, 255, 0.98)';
        navbar.style.boxShadow = '0 5px 20px rgba(0, 0, 0, 0.1)';
    } else {
        navbar.style.background = 'rgba(255, 255, 255, 0.98)';
        navbar.style.boxShadow = '0 2px 20px rgba(0, 0, 0, 0.05)';
    }
});

// Share functionality
function shareNewsletter() {
    if (navigator.share) {
        navigator.share({
            title: document.title,
            text: 'Check out this newsletter from RideAware',
            url: window.location.href
        }).catch(console.error);
    } else {
        // Fallback to copying URL to clipboard
        navigator.clipboard.writeText(window.location.href).then(() => {
            alert('Newsletter URL copied to clipboard!');
        }).catch(() => {
            alert('Unable to share. Please copy the URL manually.');
        });
    }
}

// Enhanced navbar scroll effect
window.addEventListener('scroll', function() {
    const navbar = document.querySelector('.navbar');
    if (window.scrollY > 50) {
        navbar.style.background = 'rgba(255, 255, 255, 0.98)';
        navbar.style.boxShadow = '0 5px 20px rgba(0, 0, 0, 0.1)';
    } else {
        navbar.style.background = 'rgba(255, 255, 255, 0.98)';
        navbar.style.boxShadow = '0 2px 20px rgba(0, 0, 0, 0.05)';
    }
});

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

// Add reading progress indicator
window.addEventListener('scroll', function() {
    const article = document.querySelector('.newsletter-content');
    const scrolled = window.scrollY;
    const rate = scrolled / (document.body.scrollHeight - window.innerHeight);
    const progress = Math.min(Math.max(rate, 0), 1);
    
    // Update progress bar if exists
    const progressBar = document.querySelector('.reading-progress');
    if (progressBar) {
        progressBar.style.width = (progress * 100) + '%';
    }
});

// Add animation delay for content loading
window.addEventListener('load', function() {
    const elements = document.querySelectorAll('.newsletter-header, .newsletter-content');
    elements.forEach((element, index) => {
        setTimeout(() => {
            element.style.opacity = '1';
            element.style.transform = 'translateY(0)';
        }, index * 200);
    });
});