/* Smooth scrolling */
    html {
        scroll-behavior: smooth;
    }

    /* Selection color */
    ::selection {
        background-color: rgba(13, 148, 136, 0.2);
        color: #0f172a;
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #f1f5f9;
    }
    ::-webkit-scrollbar-thumb {
        background: #94a3b8;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #64748b;
    }

    /* Fade-in animation */
    .fade-in {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }

    /* Staggered children */
    .stagger-children > * {
        opacity: 0;
        transform: translateY(16px);
        transition: opacity 0.5s ease, transform 0.5s ease;
    }
    .stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; }
    .stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
    .stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; }
    .stagger-children.visible > *:nth-child(4) { transition-delay: 0.2s; }
    .stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; }
    .stagger-children.visible > *:nth-child(6) { transition-delay: 0.3s; }
    .stagger-children.visible > * {
        opacity: 1;
        transform: translateY(0);
    }

    /* Navbar scrolled state handled in JS */

    /* Mobile menu transition */
    #mobile-menu {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
    }
    #mobile-menu.open {
        max-height: 400px;
    }

    /* Service card hover image effect */
    .group:hover .service-icon {
        transform: scale(1.1) rotate(-3deg);
    }
    .service-icon {
        transition: transform 0.3s ease;
    }

    /* Reduce motion for accessibility */
    @media (prefers-reduced-motion: reduce) {
        *, *::before, *::after {
            animation-duration: 0.01ms !important;
            transition-duration: 0.01ms !important;
            scroll-behavior: auto !important;
        }
        .fade-in, .stagger-children > * {
            opacity: 1;
            transform: none;
        }
    }