:root {
    --nav-header-height: 76px;
}

#page-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background-color: var(--bs-body-bg);
    height: var(--nav-header-height);
}

.navbar-brand-logo-normal {
    margin-top: 0.6rem;
}

.main-nav-wrap {
    background-color: rgba(255,255,255,0.95);
    position: absolute;
    width: 100%;
    overflow: hidden;
}

main-navigation {
    --menu-height: 100vh;
    --menu-root-items-min-width:575px;

    --brand-0: #003765;
    --brand-1: #26547c;
    --brand-2: #3d678a;
    --brand-3: #567a99;
    --brand-4: #e8ebf0;

    --highlight: #f3f5f8;
    --selected: #f2b969;

    --nav-item-color: var(--brand-0);

    --nav-wrap-bg: transparent;
    --nav-wrap-root-bg: transparent;
    --nav-tree-bg: transparent;
    --nav-item-padding: 0.35rem;
}

nav-item {
    background-repeat:no-repeat;
    font-size: 1.75rem;
    font-weight:300;
    border-bottom:1px solid var(--brand-3);
}
nav-item:hover::part(nav-item) {
    padding-left:2.5rem;
    background-color:var(--brand-4);
    border-top:1px solid var(--brand-3);
}
nav-item.active {
    color: var(--selected);
    background-color: var(--brand-4);
    border-top:1px solid var(--brand-3);
}
nav-item.active:hover::part(nav-item) {
    border-top: 1px solid var(--brand-4);
}

/* X BUTTON */
main-navigation.is-open::part(menu-back-button-wrap) {
    background-color: var(--brand-0);
}
main-navigation::part(menu-back-button) {
    background-color: var(--brand-1);
    border: none;
    color: var(--bs-body-bg);
}

/* LAYOUT */
@media (max-width: 640px) {
    .main-nav-wrap .container {
        padding:0;
        margin:0;
    }
    main-navigation {
        /* FIX - height of top-menu + nav-header */
        --menu-height: calc(100vh - 2*var(--nav-header-height));
    }
}
@media (min-width: 640px) {
    main-navigation::part(main-navigation-wrap) {
        grid: auto-flow / 1fr 1fr 0;
    }
}
@media (min-width: 992px) {
    main-navigation::part(main-navigation-wrap) {
        grid: auto-flow / 1fr 1fr 2fr;
    }
}
nav-sub-menu {
    width: 100%;
    min-width: 100%;
}

/* NAV PREVIEW */
main-navigation nav-preview {
    color: var(--highlight);
    background-color: transparent;
}
main-navigation nav-preview h2 {
    color: var(--highlight);
}
nav-preview div[slot=preview]:not(.style-fill) {
    margin: 2rem 0 0 2rem;
}