/* #####################################################################
   WEBDEV FRAMEWORK v0.6
   MODULE: Navigation
   PURPOSE: Sticky responsive primary navigation and skip link.
   DEPENDENCIES: colors.php, fonts.css
   ##################################################################### */

.skip-link { position:fixed; top:-5rem; left:var(--space-md); z-index:1000; padding:var(--space-sm) var(--space-md); background:var(--site-color-accent); color:var(--site-color-background); }
.skip-link:focus { top:var(--space-md); }
.site-nav { position:sticky; top:0; z-index:100; display:flex; align-items:center; gap:var(--space-lg); padding:var(--space-sm) 3%; border-bottom:1px solid var(--color-border); background:color-mix(in srgb,var(--site-color-background) 92%,transparent); backdrop-filter:blur(12px); }
.site-brand { display:inline-flex; align-items:center; gap:var(--space-sm); margin-right:auto; color:var(--site-color-accent); font-size:var(--fs-lg); font-weight:var(--fw-bold); text-decoration:none; }
.site-brand:visited { color:var(--site-color-accent); }
.site-brand__mark { display:grid; place-items:center; inline-size:2.5rem; aspect-ratio:1; border-radius:var(--radius-full); overflow:hidden; background:transparent; flex:0 0 auto; }
.site-brand__mark img { display:block; inline-size:100%; block-size:100%; object-fit:cover; border-radius:inherit; }
.site-brand__label { line-height:1; letter-spacing:.04em; }
.nav-list { display:flex; flex-wrap:wrap; gap:var(--space-sm); margin:0; padding:0; list-style:none; }
.nav-list li { margin:0; padding:0; }
.nav-list a { display:block; padding:.35rem .55rem; border-radius:var(--radius-sm); text-decoration:none; }
.nav-list a:hover { background:color-mix(in srgb, var(--site-color-text) 6%, transparent); }
.nav-toggle { display:none; }
@media(max-width:48rem){ .nav-toggle{display:inline-flex;} .nav-list{display:none; position:absolute; top:100%; right:3%; left:3%; flex-direction:column; padding:var(--space-md); border:1px solid var(--color-border); background:var(--site-color-background);} .nav-list.is-open{display:flex;} }

/* v0.8.3.7.2 Core UI Interaction Layer */
.visually-hidden {
    position: absolute !important;
    inline-size: 1px !important;
    block-size: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0 0 0 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}
.nav-toggle {
    align-items: center;
    gap: var(--space-xs);
    min-block-size: 2.75rem;
    padding: var(--space-xs) var(--space-sm);
    border: var(--border-width-default) solid var(--site-color-stroke);
    border-radius: var(--radius-md);
    background: var(--surface-soft);
    color: var(--site-color-text);
    font-family: var(--font-primary);
    font-weight: var(--fw-bold);
    cursor: pointer;
}
.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
    display: block;
    inline-size: 1.25rem;
    block-size: .125rem;
    border-radius: var(--radius-full);
    background: currentColor;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle-icon { position: relative; }
.nav-toggle-icon::before,
.nav-toggle-icon::after { content: ""; position: absolute; inset-inline-start: 0; }
.nav-toggle-icon::before { transform: translateY(-.4rem); }
.nav-toggle-icon::after { transform: translateY(.4rem); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after { transform: rotate(-45deg); }
.nav-list a[aria-current="page"],
.universal-nav__list a[aria-current="page"] {
    background: color-mix(in srgb, var(--site-color-primary) 15%, transparent);
    color: var(--site-color-primary);
    font-weight: var(--fw-bold);
}
.has-submenu { position: relative; display: inline-flex; align-items: center; gap: var(--space-2xs, .25rem); }
.nav-dropdown-toggle {
    display: inline-grid;
    place-items: center;
    inline-size: 1.75rem;
    block-size: 1.75rem;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: inherit;
    cursor: pointer;
}
.nav-dropdown-toggle::after { content: "⌄"; font-size: var(--fs-sm); line-height: 1; transition: transform var(--transition-fast); }
.nav-dropdown-toggle[aria-expanded="true"]::after { transform: rotate(180deg); }
.nav-submenu {
    display: none;
    position: absolute;
    inset-block-start: calc(100% + var(--space-xs));
    inset-inline-start: 0;
    z-index: 120;
    min-inline-size: 12rem;
    margin: 0;
    padding: var(--space-sm);
    list-style: none;
    border: var(--border-width-default) solid var(--site-color-stroke);
    border-radius: var(--radius-lg);
    background: var(--site-color-background);
    box-shadow: var(--shadow-md);
}
.nav-submenu.is-open { display: grid; gap: var(--space-xs); }
.pattern-disclosure,
details.disclosure,
details {
    border-radius: var(--radius-md);
}
.pattern-disclosure > summary,
details.disclosure > summary {
    cursor: pointer;
    font-weight: var(--fw-bold);
}
.back-to-top {
    position: fixed;
    inset-inline-end: var(--space-md);
    inset-block-end: var(--space-md);
    z-index: 150;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border: var(--border-width-default) solid var(--site-color-stroke);
    border-radius: var(--radius-full);
    background: var(--site-color-background);
    color: var(--site-color-text);
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transform: translateY(var(--space-sm));
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    cursor: pointer;
}
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
@media (min-width: 48.001rem) {
    .has-submenu:hover > .nav-submenu,
    .has-submenu:focus-within > .nav-submenu { display: grid; gap: var(--space-xs); }
}
@media(max-width:48rem){
    .site-nav,
    .universal-header__inner { position: relative; }
    .universal-nav__list { display:none; position:absolute; top:100%; right:3%; left:3%; z-index: 110; flex-direction:column; padding:var(--space-md); border:1px solid var(--color-border); border-radius: var(--radius-lg); background:var(--site-color-background); box-shadow: var(--shadow-md); list-style: none; margin: 0; }
    .universal-nav__list.is-open { display:flex; }
    .has-submenu { display: grid; grid-template-columns: 1fr auto; align-items: center; }
    .has-submenu > a { grid-column: 1; }
    .has-submenu > .nav-dropdown-toggle { grid-column: 2; }
    .has-submenu > .nav-submenu { grid-column: 1 / -1; position: static; margin-block-start: var(--space-xs); box-shadow: none; }
    .nav-list.is-open { display:flex; }
}


/* v0.8.3.7.2 visibility patch: always-visible page-end Back to Top control. */
.page-end-actions {
    display: flex;
    justify-content: center;
    padding: var(--space-xl) var(--space-md) var(--space-lg);
}
.back-to-top-inline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border: var(--border-width-default) solid var(--site-color-stroke);
    border-radius: var(--radius-full);
    background: var(--site-color-background);
    color: var(--site-color-text);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    font-weight: var(--fw-bold);
}
.back-to-top-inline:hover,
.back-to-top-inline:focus-visible {
    background: var(--surface-soft);
    transform: translateY(-1px);
}

/* v0.8.3.7.3 — Back to Top applies to Universal Website and Monarch Admin pages. */
.page-end-actions {
    padding-block: var(--space-lg) var(--space-md);
}
.back-to-top-inline {
    min-block-size: 2.75rem;
}
@media (min-width: 64rem) {
    .page-end-actions { padding-block: var(--space-md); }
}

/* v0.8.3.7.4 — Header, Navbar, and Footer Navigation refinement. */
.site-header,
.site-nav,
.universal-header {
    box-shadow: var(--navbar-shadow, 0 .35rem 1.25rem color-mix(in srgb, var(--site-color-code-background) 36%, transparent));
}
.site-header,
.universal-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: color-mix(in srgb, var(--site-color-background) 94%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: var(--navbar-stroke-width, 3px) solid var(--navbar-stroke-color, var(--site-color-accent));
}
.site-header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding-block: var(--space-sm);
}
.site-brand-icon { flex: 0 0 auto; }
.primary-navigation { display: flex; align-items: center; gap: var(--space-sm); }
.nav-list,
.universal-nav__list {
    align-items: center;
    gap: var(--space-xs);
}
.nav-link,
.nav-link:visited,
.nav-list a,
.nav-list a:visited,
.universal-nav__list a,
.universal-nav__list a:visited,
.footer-navigation-link,
.footer-navigation-link:visited {
    color: var(--site-color-text);
    text-decoration: none;
}
.nav-link:hover,
.nav-link:focus-visible,
.nav-list a:hover,
.nav-list a:focus-visible,
.universal-nav__list a:hover,
.universal-nav__list a:focus-visible,
.footer-navigation-link:hover,
.footer-navigation-link:focus-visible {
    text-decoration: none;
}
.nav-link.is-active,
.nav-link[aria-current="page"],
.nav-list a[aria-current="page"],
.universal-nav__list a[aria-current="page"],
.is-current-parent > .nav-link,
.is-current-parent > a {
    background: color-mix(in srgb, var(--site-color-primary) 14%, transparent);
    color: var(--site-color-primary);
    font-weight: var(--fw-bold);
    box-shadow: inset 0 0 0 var(--border-width-default) color-mix(in srgb, var(--site-color-primary) 28%, transparent);
}
.is-current-parent > .nav-submenu-toggle {
    color: var(--site-color-primary);
}
.nav-submenu .nav-link,
.nav-submenu a {
    border-radius: var(--radius-sm);
    padding: var(--space-xs) var(--space-sm);
}
.site-menu-toggle { flex: 0 0 auto; }
.mobile-navigation-panel { border-radius: var(--radius-lg); }
.footer-navigation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
    gap: var(--space-md);
}
.footer-navigation-group { min-inline-size: 0; }
.footer-navigation-title {
    margin-block: 0 var(--space-xs);
    font-size: var(--fs-md);
}
.footer-navigation-list {
    display: grid;
    gap: var(--space-2xs, .25rem);
    margin: 0;
    padding: 0;
    list-style: none;
}
.footer-navigation-list--inline {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    justify-content: center;
}
.footer-navigation-link {
    display: inline-flex;
    align-items: center;
    min-block-size: 2rem;
    padding: .25rem .45rem;
    border-radius: var(--radius-sm);
}
.footer-navigation-link:hover,
.footer-navigation-link:focus-visible {
    background: color-mix(in srgb, var(--site-color-text) 6%, transparent);
    color: var(--site-color-primary);
}
.footer-navigation-link.is-active,
.footer-navigation-link[aria-current="page"] {
    background: color-mix(in srgb, var(--site-color-primary) 12%, transparent);
    color: var(--site-color-primary);
    font-weight: var(--fw-bold);
}
.site-footer__grid,
.universal-footer__grid {
    align-items: start;
}
@media (max-width: 48rem) {
    .site-header-main { align-items: center; }
    .nav-list,
    .universal-nav__list,
    .mobile-navigation-panel {
        inset-inline: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
    }
    .footer-navigation-grid { grid-template-columns: 1fr; }
}