*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }

/* Mobile menu transitions */
#mobileMenu.open { opacity: 1; pointer-events: all; }
#mobileMenu.close { opacity: 0; pointer-events: none; }
.mobile-link { transition: transform 0.2s ease, opacity 0.2s ease; }
.mobile-link:hover { transform: scale(1.05); }

/* Scroll reveal animations — progressive enhancement */
@media (prefers-reduced-motion: no-preference) {
    .reveal-up { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
    .reveal-left { opacity: 0; transform: translateX(-30px); transition: opacity 0.7s ease, transform 0.7s ease; }
    .reveal-right { opacity: 0; transform: translateX(30px); transition: opacity 0.7s ease, transform 0.7s ease; }

    .reveal-up.visible,
    .reveal-left.visible,
    .reveal-right.visible { opacity: 1; transform: translate(0, 0); }
}

/* Fallback: always show content if JS is disabled or prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .reveal-up, .reveal-left, .reveal-right { opacity: 1; transform: none; }
}

/* Navbar transition */
#navbar.scrolled { background: rgba(15, 23, 42, 0.95); backdrop-filter: blur(12px); box-shadow: 0 1px 0 rgba(255,255,255,0.05); }

/* Smooth image loading */
img { display: block; max-width: 100%; }