/* Collapsible sidebar navigation sections (see _includes/nav_list) */
.nav__list .nav__details > summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
}

/* Hide the default disclosure marker across browsers */
.nav__list .nav__details > summary::-webkit-details-marker {
    display: none;
}

/* Custom disclosure triangle that rotates when open */
.nav__list .nav__details > summary::before {
    content: "";
    flex: 0 0 auto;
    margin-right: 0.5em;
    border-style: solid;
    border-width: 0.3em 0 0.3em 0.45em;
    border-color: transparent transparent transparent currentColor;
    transition: transform 0.15s ease;
}

.nav__list .nav__details[open] > summary::before {
    transform: rotate(90deg);
}