*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

/* Scroll reveal — progressive enhancement via JS */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal[data-reveal="delay-1"] { transition-delay: 0.1s; }
.reveal[data-reveal="delay-2"] { transition-delay: 0.2s; }
.reveal[data-reveal="delay-3"] { transition-delay: 0.3s; }
.reveal[data-reveal="delay-4"] { transition-delay: 0.4s; }

.reveal.is-hidden {
    opacity: 0;
    transform: translateY(32px);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal, .reveal.is-hidden {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .gallery-item img, .service-card img {
        transition: none;
    }
    .service-card:hover img, .gallery-item:hover img {
        transform: none;
    }
}

/* Header */
#header {
    will-change: box-shadow;
}

#header.scrolled #headerBg {
    opacity: 1;
}

/* Mobile nav */
#mobileNav.open {
    opacity: 1;
    pointer-events: auto;
}

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

/* Service cards */
.service-card {
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -12px rgba(22, 54, 30, 0.12);
}

/* Gallery */
.gallery-item {
    position: relative;
    overflow: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f5f5ed;
}
::-webkit-scrollbar-thumb {
    background: #b7dbb6;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #86c489;
}

/* Selection */
::selection {
    background: #d9ecd8;
    color: #1a4324;
}

/* Form select arrow */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%231f532a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

select:focus {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23338242' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}