:root {
    --navbar-offset: 8px;
}

/* Prevent content from being hidden under fixed navbar */
body {
    padding-top: calc(48px + var(--navbar-offset) * 2);
}

/* =========================
   Floating Navbar
   ========================= */

#mainNavBar {
    position: fixed;
    top: var(--navbar-offset);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;

    /* 🔑 constrain width on small screens */
    max-width: calc(100vw - 16px);
    width: auto;

    pointer-events: auto;
}

/* =========================
   Navigation Items Container
   ========================= */

#mainNavBar .nav-items {
    display: inline-flex;
    align-items: center;

    gap: clamp(0.4rem, 1.5vw, 1rem);
    padding: 0.4rem 0.5rem;

    background: rgba(255, 255, 255, 0.95);
    border-radius: 14px;

    backdrop-filter: blur(8px) saturate(180%);
    -webkit-backdrop-filter: blur(8px) saturate(180%);

    box-shadow:
            0 6px 20px rgba(0, 0, 0, 0.15),
            0 1px 3px rgba(0, 0, 0, 0.1);

    /* 🔑 scrolling happens HERE */
    overflow-x: auto;
    white-space: nowrap;

    max-width: 100%;
    scrollbar-width: none;
}

#mainNavBar .nav-items::-webkit-scrollbar {
    display: none;
}

/* =========================
   Navigation Links
   ========================= */

#mainNavBar .nav-item {
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;

    /* 🔑 slightly larger minimum for touch */
    font-size: clamp(0.9rem, 3.5vw, 1rem);

    padding: 0.5rem 0.75rem;

    transition:
            color 0.15s ease,
            transform 0.15s ease;
}

#mainNavBar .nav-item:hover {
    transform: translateY(-1px);
}

#mainNavBar .nav-item,
#mainNavBar .nav-item:visited,
#mainNavBar .nav-item:hover,
#mainNavBar .nav-item:active,
#mainNavBar .nav-item:focus {
    color: #111;
    text-decoration: none;
}

/* =========================
   Hide / Show Animation
   ========================= */

#mainNavBar {
    transition: transform 0.25s ease;
    will-change: transform;
}

#mainNavBar.nav-hidden {
    transform: translate(-50%, -120%);
}

/* =========================
   Selected State
   ========================= */

#mainNavBar .nav-item.is-selected {
    pointer-events: none;
    cursor: default;

    color: #ff6b00;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 4px;
}