/* ========== BASE ========== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; font-family: 'Inter', system-ui, sans-serif; }

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #fdf9ee; }
::-webkit-scrollbar-thumb { background: #166534; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #15803d; }

/* ========== NAV ========== */
#mainNav {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
#mainNav.scrolled {
    background: rgba(254, 253, 248, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(22, 101, 52, 0.08), 0 4px 24px rgba(0,0,0,0.06);
}

/* ========== HERO ANIMATIONS ========== */
.hero-anim {
    opacity: 0;
    transform: translateY(32px);
    animation: heroReveal 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero-anim:nth-child(2) { animation-delay: 0.15s; }
.hero-anim:nth-child(3) { animation-delay: 0.3s; }
.hero-anim:nth-child(4) { animation-delay: 0.45s; }

@keyframes heroReveal {
    to { opacity: 1; transform: translateY(0); }
}

/* ========== SCROLL LINE ========== */
@keyframes scrollLine {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}
.animate-scrollLine {
    animation: scrollLine 1.6s ease-in-out infinite;
    display: block;
}

/* ========== REVEAL (below fold only, progressive enhancement) ========== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(40px);
        transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
    .reveal:nth-child(4) { transition-delay: 0.3s; }
}

/* Mobile menu */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}