/* Base & Utilities */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scroll Reveal — progressive enhancement, hidden by default for JS-gated */
.scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .scroll-reveal:not(.revealed) {
        opacity: 0;
        transform: translateY(24px);
    }
}

/* Header scroll state */
#site-header.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(21, 128, 61, 0.08), 0 4px 24px rgba(0, 0, 0, 0.04);
}

/* Mobile menu transitions */
#mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
}

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Smooth image loading */
img {
    background-color: #f0fdf4;
}

/* Selection color */
::selection {
    background-color: #bbf7d0;
    color: #15803d;
}

/* Subtle focus styles */
a:focus-visible, button:focus-visible {
    outline: 2px solid #22c55e;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f0fdf4;
}
::-webkit-scrollbar-thumb {
    background: #86efac;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #4ade80;
}

/* Mobile menu link hover */
.mobile-link {
    position: relative;
}
.mobile-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: #22c55e;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}
.mobile-link:hover::after {
    width: 80%;
}