:root {

    /* Navbar sizing */
    --nav-max-width: 900px;
    --nav-side-padding: 30px;

    /* Space between logo and links */
    --nav-brand-gap: 250px;

    /* Link spacing */
    --nav-link-gap: 40px;

    /* Font sizing */
    --nav-font-size: 1rem;
}

.site-nav {

    position: fixed;
    top: 25px;
    left: 50%;
    transform: translateX(-50%);

    display: flex;
    align-items: center;

    width: fit-content;
    max-width: 95vw;

    padding: 8px var(--nav-side-padding);

    border-radius: 999px;
    background: rgba(245,245,245,0.95);

    box-shadow: 0 10px 30px rgba(0,0,0,.1);
    backdrop-filter: blur(10px);

    z-index: 1000;

    white-space: nowrap;
}


/* Shared link behaviour */
.site-nav a {

    text-decoration: none;
    color: #222;

    transition: .2s ease;
    white-space: nowrap;
}

.site-nav a:hover {
    transform: translateY(-2px);
}

.site-nav a:active {
    transform: translateY(0);
}


/* Brand */
.site-nav .nav-brand {

    font-family: system-ui,
                 "Segoe UI",
                 Roboto,
                 Helvetica,
                 Arial,
                 sans-serif,
                 "Apple Color Emoji",
                 "Segoe UI Emoji",
                 "Segoe UI Symbol";

    flex-shrink: 0;

    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: 0.03em;

    margin-right: var(--nav-brand-gap);

    cursor: pointer;
}


/* Navigation links container */
.nav-links {

    display: flex;
    align-items: center;
    gap: var(--nav-link-gap);
}


/* Navigation links */
.nav-links a {

    font-size: var(--nav-font-size);
    font-weight: 300;
}


/* Active page */
.nav-links a.active {

    font-weight: 700;

    text-decoration: underline;
    text-underline-offset: 6px;
}


@media (max-width: 900px) {

    :root {
        --nav-brand-gap: 50px;
        --nav-link-gap: 25px;
    }
}


@media (max-width: 700px) {

    :root {
        --nav-brand-gap: 20px;
        --nav-link-gap: 15px;
        --nav-font-size: 0.9rem;
    }

    .site-nav {
        padding: 6px 20px;
    }
}

@media (max-width: 500px) {

    :root {
        --nav-brand-gap: 10px;
        --nav-link-gap: 10px;
        --nav-font-size: 0.8rem;
    }
}