/* Scroll reveal base styles — progressive enhancement, visible by default */
.scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal.is-hidden {
        opacity: 0;
        transform: translateY(24px);
    }
    .scroll-reveal.is-visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Smooth scroll offset for fixed nav */
section[id] {
    scroll-margin-top: 80px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #131316;
}
::-webkit-scrollbar-thumb {
    background: #4f4f56;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #6b6b74;
}

/* Selection color */
::selection {
    background: rgba(255, 87, 64, 0.2);
    color: #131316;
}
</styles.css>

<sm-file path="script.js">
(function () {
    'use strict';

    // Mobile menu toggle
    const menuBtn = document.getElementById('menuBtn');
    const mobileMenu = document.getElementById('mobileMenu');
    const mobileLinks = mobileMenu.querySelectorAll('a');

    menuBtn.addEventListener('click', function () {
        const isOpen = !mobileMenu.classList.contains('hidden');
        mobileMenu.classList.toggle('hidden');
        menuBtn.setAttribute('aria-expanded', !isOpen);
    });

    mobileLinks.forEach(function (link) {
        link.addEventListener('click', function () {
            mobileMenu.classList.add('hidden');
            menuBtn.setAttribute('aria-expanded', 'false');
        });
    });

    // Navbar background on scroll
    const nav = document.getElementById('nav');
    let lastScroll = 0;

    window.addEventListener('scroll', function () {
        const currentScroll = window.pageYOffset;
        if (currentScroll > 50) {
            nav.classList.add('shadow-lg');
        } else {
            nav.classList.remove('shadow-lg');
        }
        lastScroll = currentScroll;
    }, { passive: true });

    // Scroll reveal — progressive enhancement
    if (window.matchMedia('(prefers-reduced-motion: no-preference)').matches) {
        const revealElements = document.querySelectorAll('.scroll-reveal');

        const observer = new IntersectionObserver(function (entries) {
            entries.forEach(function (entry) {
                if (entry.isIntersecting) {
                    entry.target.classList.add('is-visible');
                    entry.target.classList.remove('is-hidden');
                    observer.unobserve(entry.target);
                }
            });
        }, {
            threshold: 0.1,
            rootMargin: '0px 0px -40px 0px'
        });

        // Add hidden state via JS only (progressive enhancement)
        revealElements.forEach(function (el) {
            el.classList.add('is-hidden');
            observer.observe(el);
        });
    }

    // Contact form
    const form = document.getElementById('contactForm');
    const successMsg = document.getElementById('formSuccess');

    if (form) {
        form.addEventListener('submit', function (e) {
            e.preventDefault();
            form.style.display = 'none';
            successMsg.classList.remove('hidden');
        });
    }
})();
</script>