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

/* Scroll reveal — progressive enhancement, hidden by default */
.scroll-reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal.is-hidden {
        opacity: 0;
        transform: translateY(24px);
    }
}

/* Header scroll state */
#header.scrolled {
    background: rgba(255, 252, 245, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(6, 78, 59, 0.08);
}

/* Mobile menu transitions */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}
#mobile-menu.open {
    max-height: 400px;
    opacity: 1;
}

/* Smooth image loading */
img {
    image-rendering: auto;
}

/* Selection color */
::selection {
    background: #065f46;
    color: #FFFCF5;
}

/* Focus visible */
:focus-visible {
    outline: 2px solid #059669;
    outline-offset: 2px;
    border-radius: 4px;
}