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

    html {
        scroll-behavior: smooth;
    }

    body {
        overflow-x: hidden;
    }

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

    @media (prefers-reduced-motion: no-preference) {
        .scroll-reveal {
            opacity: 0;
            transform: translateY(30px);
        }

        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Navbar scroll state */
    #navbar.scrolled {
        background: rgba(15, 23, 42, 0.95);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(107, 47, 91, 0.3);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #0f172a;
    }
    ::-webkit-scrollbar-thumb {
        background: #6b2f5b;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #943f63;
    }

    /* Selection color */
    ::selection {
        background: rgba(107, 47, 91, 0.5);
        color: #f5e9ef;
    }

    /* Mobile menu animation */
    #mobile-menu {
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Form select arrow */
    select {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' 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: 36px;
    }