/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: 'Inter', sans-serif; color: #064E3B; background: #FDFBF7; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
    .reveal.revealed { opacity: 1; transform: translateY(0); }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
}

/* ── Header ── */
#header { background: rgba(253, 251, 247, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid rgba(16, 185, 129, 0.08); }
#header.scrolled { background: rgba(253, 251, 247, 0.95); box-shadow: 0 4px 30px rgba(6, 78, 59, 0.06); }

/* ── Mobile Menu ── */
#mobile-menu.open { opacity: 1; pointer-events: all; }
#mobile-menu.closed { opacity: 0; pointer-events: none; }
.mobile-nav-link { transition: opacity 0.3s, transform 0.3s; }
#mobile-menu.open .mobile-nav-link { opacity: 1; transform: translateY(0); }
#mobile-menu.closed .mobile-nav-link { opacity: 0; transform: translateY(10px); }
#mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-nav-link:nth-child(5) { transition-delay: 0.25s; }

.menu-line { transition: transform 0.3s ease, opacity 0.3s ease; }
#mobile-menu-btn.active .menu-line:nth-child(1) { transform: translateY(4px) rotate(45deg); }
#mobile-menu-btn.active .menu-line:nth-child(2) { opacity: 0; }
#mobile-menu-btn.active .menu-line:nth-child(3) { transform: translateY(-4px) rotate(-45deg); width: 1.25rem; }