/* Base & Utilities */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { overflow-x: hidden; }

/* Scroll Reveal - Progressive Enhancement */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
}

/* Reduced motion - always visible */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    html { scroll-behavior: auto; }
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #F0FBF7; }
::-webkit-scrollbar-thumb { background: #A3EBCD; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #6DD8B0; }

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

/* Mobile Menu Animation */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease;
    opacity: 0;
}
#mobile-menu.open {
    max-height: 500px;
    opacity: 1;
}

/* Nav Links */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: #5EEAD4;
    border-radius: 1px;
    transition: width 0.25s ease, left 0.25s ease;
}
.nav-link:hover::after {
    width: 60%;
    left: 20%;
}

/* Mobile Links */
.mobile-link {
    border-radius: 0.75rem;
}

/* Form Focus Styles */
input:focus, select:focus, textarea:focus {
    outline: none;
}

/* Smooth image loading */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Selection Color */
::selection {
    background: #A3EBCD;
    color: #0A2540;
}

/* Gallery hover overlay */
.group:hover img {
    transform: scale(1.05);
}

/* Button ripple effect */
button, a {
    -webkit-tap-highlight-color: transparent;
}

/* Active section indicator in nav */
.nav-link.active {
    color: #5EEAD4;
}
.nav-link.active::after {
    width: 60%;
    left: 20%;
}