* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

html, body {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: #ffffff;
    color: #ffffff;
}

/* ── Nav ─────────────────────────────────────────────────────────────────── */

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 48px;
    transition: background 0.4s ease, padding 0.3s ease;
}

.site-nav.scrolled {
    background: rgba(3, 13, 26, 0.92);
    backdrop-filter: blur(12px);
    padding: 14px 48px;
    border-bottom: 1px solid rgba(2, 150, 169, 0.15);
}

.nav-logo {
    font-size: 18px;
    color: rgb(2, 150, 169);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.is-active {
    color: rgb(2, 150, 169);
}

@media (max-width: 500px) {
    .site-nav {
        padding: 16px 24px;
    }
    .site-nav.scrolled {
        padding: 12px 24px;
    }
    .nav-links {
        display: none;
    }
}