/* Series Navigator */

.series-nav {
    grid-column: 1 / -1;
    max-width: var(--content-max);
    margin: 0 0 1.5rem;
    padding: 1em 1.2em;
    background: var(--color-code-bg);
    border-radius: 4px;
    border-left: 3px solid var(--color-accent);
}

.series-nav__label {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0 0 0.5em;
}

.series-nav__label strong {
    color: var(--color-text);
}

.series-nav__details {
    margin-bottom: 0.75em;
}

.series-nav__summary {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    list-style: revert;
}

.series-nav__summary:hover {
    color: var(--color-text);
}

.series-nav__list {
    padding-left: 1.5em;
    margin: 0.5em 0 0;
}

.series-nav__item {
    font-family: var(--font-serif);
    font-size: var(--text-sm);
    line-height: 1.5;
    margin-bottom: 0.3em;
}

.series-nav__item a {
    color: var(--color-link);
    text-decoration: none;
}

.series-nav__item a:hover {
    text-decoration: underline;
}

.series-nav__item--current {
    font-weight: 700;
    color: var(--color-text);
}

.series-nav__item--current em {
    font-weight: 400;
    color: var(--color-text-light);
    font-size: var(--text-xs);
}

.series-nav__links {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
}

.series-nav__prev,
.series-nav__next {
    color: var(--color-link);
    text-decoration: none;
}

.series-nav__prev:hover,
.series-nav__next:hover {
    text-decoration: underline;
}

.series-nav__next {
    margin-left: auto;
    text-align: right;
}

@media (max-width: 768px) {
    .series-nav__links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .series-nav__next {
        text-align: left;
    }
}