/* Shared cross-navigation bar */
.version-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    height: 40px;
    padding: 0 12px;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-family: 'Segoe UI', 'Roboto', sans-serif;
    font-size: 0.75rem;
}

.version-nav a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
    font-weight: 500;
}

.version-nav a:hover {
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.08);
}

.version-nav a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    font-weight: 700;
}

.version-nav .nav-sep {
    color: rgba(255, 255, 255, 0.15);
    font-size: 0.65rem;
    user-select: none;
}

@media (max-width: 480px) {
    .version-nav {
        font-size: 0.65rem;
        gap: 2px;
        padding: 0 6px;
    }

    .version-nav a {
        padding: 6px 8px;
    }
}