/* Klappnavigation: gemeinsame Daten, getrennte Links und Aufklappschalter. */
.site-header {
    position: relative;
    z-index: 30;
}

.site-menu-toggle {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--ink);
}

.site-navigation {
    min-width: 0;
    font-size: .85rem;
}

.nav-root,
.nav-submenu {
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-root {
    display: flex;
    align-items: center;
    gap: clamp(7px, 1.1vw, 16px);
}

.nav-item {
    position: relative;
}

.nav-category-row {
    display: flex;
    align-items: center;
    border-radius: var(--radius);
}

.nav-category-row > a,
.nav-standalone > a {
    display: block;
    padding: 10px 3px;
    text-decoration: none;
    white-space: nowrap;
}

.nav-standalone > a {
    padding-inline: 9px;
}

.nav-category-row > a:hover,
.nav-standalone > a:hover {
    text-decoration: underline;
}

.nav-disclosure {
    display: none;
    align-items: center;
    justify-content: center;
    width: 32px;
    min-height: 40px;
    padding: 0;
    border: 0;
    border-radius: var(--radius);
    background: transparent;
    color: var(--accent);
}

.js .nav-disclosure {
    display: inline-flex;
}

.nav-disclosure span {
    display: block;
    font-size: 1.2rem;
    line-height: 1;
    transition: transform .15s;
}

.nav-disclosure[aria-expanded='true'] span {
    transform: rotate(180deg);
}

.nav-disclosure:hover,
.nav-disclosure[aria-expanded='true'],
.is-current-category > .nav-category-row {
    background: var(--tint);
}

.is-current-category > .nav-category-row > a {
    color: var(--accent);
    font-weight: 600;
}

.nav-submenu {
    display: none;
    position: absolute;
    top: calc(100% + 9px);
    left: 0;
    z-index: 40;
    width: 340px;
    max-width: calc(100vw - 48px);
    max-height: min(65dvh, 620px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 9px;
    border: 1px solid var(--line);
    border-top: 3px solid var(--accent);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--ink);
    box-shadow: 0 12px 30px #23382b1c;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--tint);
}

.nav-item:nth-last-child(-n+3) > .nav-submenu {
    right: 0;
    left: auto;
}

.nav-item.is-expanded > .nav-submenu,
html:not(.js) .nav-item:hover > .nav-submenu,
html:not(.js) .nav-item:focus-within > .nav-submenu {
    display: block;
}

.nav-submenu a {
    display: block;
    padding: 10px 13px;
    border-radius: var(--radius);
    text-decoration: none;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.nav-submenu a:hover,
.nav-submenu a:focus-visible {
    background: var(--tint);
}

.nav-submenu a[aria-current='page'] {
    background: var(--accent);
    color: white;
    font-weight: 600;
}

.nav-overview {
    margin-bottom: 5px;
    padding-bottom: 7px;
    border-bottom: 1px solid var(--line);
}

.nav-overview a {
    font-weight: 600;
}

.nav-overview span {
    float: right;
    margin-left: 10px;
}

@media (max-width: 1100px) {
    .site-header {
        flex-wrap: wrap;
        gap: 15px 12px;
    }

    .js .site-menu-toggle {
        display: inline-flex;
    }

    .site-navigation {
        width: 100%;
        max-height: calc(100dvh - 180px);
        overflow-y: auto;
        overscroll-behavior: contain;
        scrollbar-width: thin;
        scrollbar-color: var(--accent) var(--tint);
    }

    .js .site-navigation {
        position: absolute;
        top: calc(100% + 1px);
        left: 0;
        z-index: 40;
        padding: 12px;
        border: 1px solid var(--line);
        border-top: 3px solid var(--accent);
        border-radius: 0 0 var(--radius) var(--radius);
        background: var(--surface);
        box-shadow: 0 12px 30px #23382b1c;
    }

    .js .site-navigation:not(.is-open) {
        display: none;
    }

    .nav-root {
        display: block;
    }

    .nav-item + .nav-item,
    .nav-standalone {
        border-top: 1px solid var(--line);
    }

    .nav-category-row > a {
        flex: 1;
        padding: 12px;
    }

    .nav-disclosure {
        width: 46px;
        min-height: 46px;
    }

    .nav-submenu {
        position: static;
        width: 100%;
        max-width: none;
        max-height: none;
        overflow: visible;
        margin: 3px 0 10px;
        padding: 6px 7px 6px 12px;
        border: 0;
        border-left: 2px solid var(--line);
        border-radius: 0;
        background: var(--paper);
        box-shadow: none;
        font-size: .84rem;
    }

    html:not(.js) .nav-submenu {
        display: block;
    }

    .nav-submenu a {
        padding-block: 11px;
    }

    .nav-standalone > a {
        padding: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .nav-disclosure span {
        transition: none;
    }
}