.nav-guide {
    font-style: italic;
    font-size: +1.2em;
}

/* Sidebar dark theme */
nav.col-md-3 {
    background-color: var(--dark-bg-2);
}

nav.col-md-3 .nav-link {
    color: var(--text-secondary);
}

nav.col-md-3 .nav-link:hover {
    color: var(--text-primary);
}

nav.col-md-3 .nav-link.active {
    color: var(--glow-color-intense);
}

/* Section headers in sidebar */
.nav-header {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    padding: 0.75rem 1rem 0.25rem;
    margin-top: 0.5rem;
    pointer-events: none;
}

@media (min-width: 768px) { /* Apply only for non-mobile views */
    nav.col-md-3 {
        position: sticky;
        top: 0; /* Distance from the top of the viewport */
        height: calc(100vh - 1rem); /* Full height minus some padding */
        overflow-y: auto; /* Add scroll if content overflows */
    }
}