/* Base & Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-padding-top: 80px;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }
.reveal[data-delay="5"] { transition-delay: 0.5s; }
.reveal[data-delay="6"] { transition-delay: 0.6s; }

@media (prefers-reduced-motion: no-preference) {
    .reveal-hidden {
        opacity: 0;
        transform: translateY(32px);
    }
    .reveal-hidden.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Nav Transition */
nav.scrolled {
    background: rgba(250, 249, 246, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(26, 46, 26, 0.08);
}

nav.scrolled .serif {
    color: #1a2e1a;
}

/* Mobile Menu */
.mobile-link {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* Hamburger Animation */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}

#menu-btn.active .menu-line:nth-child(3) {
    width: 1.5rem;
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Smooth image loading */
img {
    loading: lazy;
}

/* Selection color */
::selection {
    background: #3a633a;
    color: #faf9f6;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f5f3ee;
}

::-webkit-scrollbar-thumb {
    background: #9bbf9b;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #6fa06f;
}
</style>

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

    // ── Navigation scroll effect ─────────────────────────────────────
    const nav = document.getElementById('nav');
    let lastScroll = 0;

    function handleScroll() {
        const currentScroll = window.pageYOffset;
        if (currentScroll > 60) {
            nav.classList.add('scrolled');
        } else {
            nav.classList.remove('scrolled');
        }
        lastScroll = currentScroll;
    }

    window.addEventListener('scroll', handleScroll, { passive: true });

    // ── Mobile menu ──────────────────────────────────────────────────
    const menuBtn = document.getElementById('menu-btn');
    const mobileMenu = document.getElementById('mobile-menu');
    const mobileLinks = mobileMenu.querySelectorAll('a');
    let menuOpen = false;

    menuBtn.addEventListener('click', function () {
        menuOpen = !menuOpen;
        menuBtn.classList.toggle('active', menuOpen);
        mobileMenu.classList.toggle('open', menuOpen);
        document.body.style.overflow = menuOpen ? 'hidden' : '';
    });

    mobileLinks.forEach(function (link) {
        link.addEventListener('click', function () {
            menuOpen = false;
            menuBtn.classList.remove('active');
            mobileMenu.classList.remove('open');
            document.body.style.overflow = '';
        });
    });

    // ── Scroll reveal (progressive enhancement) ──────────────────────
    const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;

    if (!prefersReducedMotion) {
        const revealElements = document.querySelectorAll('.reveal-hidden');

        function revealOnScroll() {
            const windowHeight = window.innerHeight;
            revealElements.forEach(function (el) {
                const elementTop = el.getBoundingClientRect().top;
                if (elementTop < windowHeight - 80) {
                    el.classList.add('revealed');
                }
            });
        }

        window.addEventListener('scroll', revealOnScroll, { passive: true });
        revealOnScroll(); // Check on load
    }

    // ── Smooth scroll for anchor links ───────────────────────────────
    document.querySelectorAll('a[href^="#"]').forEach(function (anchor) {
        anchor.addEventListener('click', function (e) {
            const targetId = this.getAttribute('href');
            if (targetId === '#') return;
            const target = document.querySelector(targetId);
            if (target) {
                e.preventDefault();
                const offsetTop = target.getBoundingClientRect().top + window.pageYOffset - 80;
                window.scrollTo({
                    top: offsetTop,
                    behavior: 'smooth'
                });
            }
        });
    });

    // ── Service card stagger animation ───────────────────────────────
    const serviceCards = document.querySelectorAll('.service-card');
    if (!prefersReducedMotion && serviceCards.length) {
        const observer = new IntersectionObserver(
            function (entries) {
                entries.forEach(function (entry, index) {
                    if (entry.isIntersecting) {
                        setTimeout(function () {
                            entry.target.style.opacity = '1';
                            entry.target.style.transform = 'translateY(0)';
                        }, index * 100);
                        observer.unobserve(entry.target);
                    }
                });
            },
            { threshold: 0.1 }
        );

        serviceCards.forEach(function (card) {
            card.style.opacity = '0';
            card.style.transform = 'translateY(24px)';
            card.style.transition = 'opacity 0.6s ease, transform 0.6s ease';
            observer.observe(card);
        });
    }
})();