*, *::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, hidden only when JS runs and motion is preferred */
    .scroll-reveal {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

    @media (prefers-reduced-motion: no-preference) {
        .scroll-reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

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

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #0a1628;
    }
    ::-webkit-scrollbar-thumb {
        background: #1e3a5f;
        border-radius: 4px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #34d399;
    }

    /* Selection color */
    ::selection {
        background: rgba(52, 211, 153, 0.3);
        color: #f0fdf4;
    }