*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Mobile menu transitions */
#mobile-menu { transition: opacity 0.3s ease, visibility 0.3s ease; }
#mobile-menu:not(.hidden) { opacity: 1; visibility: visible; }
#mobile-menu.hidden { opacity: 0; visibility: hidden; }

.mobile-nav-link {
    width: 100%;
    text-align: center;
}

/* Service card stagger animation (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
    .service-card {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }
    .service-card.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .visit-card {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease, transform 0.5s ease;
    }
    .visit-card.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header scroll state */
#site-header.scrolled {
    box-shadow: 0 1px 0 rgba(22, 101, 52, 0.08);
}

/* Back to top button */
#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* Focus styles */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid #16a34a;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #fdfcfa; }
::-webkit-scrollbar-thumb { background: #166534; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #14532d; }