/* ── Reset & base ───────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; height: auto; display: block; }

/* ── Nav ────────────────────────────────────────── */
.nav-scrolled {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 250, 245, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(22, 101, 52, 0.08);
    transition: box-shadow 0.3s ease;
}
.nav-scrolled.scrolled {
    box-shadow: 0 4px 24px rgba(20, 83, 45, 0.08);
}

/* ── Mobile nav toggle ──────────────────────────── */
.nav-toggle { background: none; border: none; cursor: pointer; padding: 4px; color: #166534; }
.nav-icon-close { display: none; }
body.nav-open .nav-icon-open { display: none; }
body.nav-open .nav-icon-close { display: block; }

.mobile-nav-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(22, 101, 52, 0.08);
    text-decoration: none;
    color: #166534;
    transition: color 0.2s;
}
.mobile-nav-link:hover { color: #338833; }

/* ── Reveal animations (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal-up.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}
/* Fallback: always visible if JS disabled */
@media not all and (prefers-reduced-motion: no-preference) {
    .reveal-up { opacity: 1; transform: none; }
}

/* ── Scrollbar ──────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f5f5ee; }
::-webkit-scrollbar-thumb { background: #b6d7b6; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #84be84; }