/* Base & Resets */
    *, *::before, *::after {
        box-sizing: border-box;
    }

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

    body {
        margin: 0;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

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

    /* Navbar */
    #navbar {
        backdrop-filter: blur(0px);
        background: transparent;
    }

    #navbar.scrolled {
        background: rgba(13, 27, 42, 0.95);
        backdrop-filter: blur(16px);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    /* Mobile Menu */
    #mobileMenu.open {
        opacity: 1;
        pointer-events: all;
    }

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

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }

    ::-webkit-scrollbar-track {
        background: #0D1B2A;
    }

    ::-webkit-scrollbar-thumb {
        background: #34D4A0;
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #0FBF85;
    }

    /* Selection */
    ::selection {
        background: #34D4A0;
        color: #0D1B2A;
    }

    /* Reduce motion */
    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }
        .scroll-reveal {
            transition: none;
        }
        * {
            transition: none !important;
            animation: none !important;
        }
    }

    /* Select styling */
    select option {
        background: #0D1B2A;
        color: #C5D0E2;
    }