/* Shared navigation stays in the HTML. Details supplies the no-script menus. */
:root {
    --header-height: 4.75rem;
    --reading-header-height: var(--header-height);
}

.site-header,
html:not(.reading-nav-enhanced) .reading-hud.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 50;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: var(--header-height);
    min-height: var(--header-height);
    padding: 0 clamp(20px, 4vw, 64px);
    border-bottom: 1px solid var(--line);
    background: #040a13;
    box-shadow: none;
}

.site-header::before,
.site-header::after { display: none; }

.site-header .site-brand {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: baseline;
    gap: 12px;
    min-height: 44px;
    padding-block: 12px;
    color: var(--cream);
}

.site-header .site-brand > span { font-size: .88rem; }
.site-header .site-brand small { font-size: 1rem; }
.site-header .brand-full { display: inline; }
.site-header .brand-short { display: none; }
.site-header .site-brand:focus-visible { outline-offset: 3px; }

.site-menu { min-width: 0; height: 100%; margin-left: auto; }
.site-menu > .site-menu-toggle { display: none; }

/* Closed outer details still presents the desktop navigation. The matching
   mobile override exposes the secondary links without a second disclosure. */
.site-menu::details-content { content-visibility: visible; height: 100%; }
.site-menu > .site-navigation {
    display: flex;
    flex-wrap: wrap;
    align-content: center;
    align-items: center;
    justify-content: flex-end;
    gap: 0 clamp(18px, 2.5vw, 36px);
    height: 100%;
    overflow: visible;
}

.site-navigation > a,
.site-more > summary,
.site-menu > .site-menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 44px;
    min-height: 44px;
    padding: 10px 0;
    border-bottom: 2px solid transparent;
    color: var(--muted);
    font: 600 var(--font-size-ui)/1.5 var(--font-body);
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    transition: color 160ms ease-out, border-color 160ms ease-out;
}

.site-navigation > .site-home-link,
.site-menu > .site-menu-toggle { display: none; }
.site-menu summary,
.home-page-nav > summary { list-style: none; }
.site-menu summary::-webkit-details-marker,
.home-page-nav > summary::-webkit-details-marker { display: none; }
.site-menu summary::marker,
.home-page-nav > summary::marker { content: ""; }

.site-menu summary svg {
    flex: 0 0 16px;
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: square;
}

.site-navigation > a:hover,
.site-more > summary:hover,
.site-menu > .site-menu-toggle:hover,
.site-navigation a[aria-current],
.site-more[data-current] > summary { color: var(--cream); }
.site-navigation > a[aria-current],
.site-more[data-current] > summary { border-bottom-color: var(--gold); }
.site-navigation a:focus-visible,
.site-menu summary:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
.site-more { position: relative; }
.site-more[open] > summary { color: var(--cream); }
.site-more[open] > summary svg,
.site-menu[open] > .site-menu-toggle svg { transform: rotate(180deg); }

.site-more-links {
    position: absolute;
    top: calc(100% + 8px);
    right: -16px;
    display: grid;
    min-width: 200px;
    padding: 8px;
    border: 1px solid var(--line-strong);
    background: #050c17;
}

.site-more-links a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 10px 12px;
    color: var(--cream-soft);
    font: 500 var(--font-size-ui)/1.5 var(--font-body);
    text-decoration: none;
}

.site-more-links a:hover { color: var(--gold); background: rgba(255, 190, 99, .07); }
.site-more-links a[aria-current] { color: var(--gold); text-decoration: underline; text-underline-offset: 5px; }
.site-more-links a:focus-visible { outline-offset: -3px; }

.site-footer-nav {
    display: flex;
    flex: 1 1 100%;
    flex-wrap: wrap;
    gap: 0 22px;
    width: 100%;
    margin-bottom: 8px;
}

.site-footer-nav a {
    display: inline-flex;
    align-items: center;
    min-width: 44px;
    min-height: 44px;
    color: var(--cream-soft);
    font: 500 var(--font-size-ui)/1.5 var(--font-body);
    text-decoration: none;
}

.site-footer-nav a:hover { color: var(--gold); }
.site-footer-nav a[aria-current] { color: var(--gold); text-decoration: underline; }
.site-footer-nav a:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
.follow-strip { flex-wrap: wrap; }

/* The home footer now contains a directory, so give it its own document space. */
.home-footer {
    position: relative;
    padding: 24px clamp(20px, 4vw, 64px);
    border-top: 1px solid var(--line);
    background: var(--ink);
    color: var(--muted);
    font-size: var(--font-size-ui);
}

.home-footer > p { margin: 8px 0 0; color: var(--muted); font-size: inherit; }

.breadcrumbs { margin: 0 0 22px; color: var(--muted); font-size: .875rem; }
.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 0 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.breadcrumbs li { display: flex; align-items: baseline; gap: 12px; min-width: 0; line-height: 1.6; }
.breadcrumbs li:last-child { flex: 1 1 12rem; }
.breadcrumbs li + li::before {
    flex: 0 0 5px;
    width: 5px;
    height: 5px;
    border-top: 1px solid currentColor;
    border-right: 1px solid currentColor;
    content: "";
    transform: translateY(-2px) rotate(45deg);
}

.breadcrumbs a,
.breadcrumbs [aria-current] { min-height: 44px; padding-block: 11px; overflow-wrap: anywhere; }
.breadcrumbs a { min-width: 44px; color: var(--cream-soft); text-decoration: none; }
.breadcrumbs a:hover { color: var(--gold); }
.breadcrumbs a:focus-visible { outline-offset: 3px; }
.work-play-link { margin-top: 16px; }

.home-page-nav {
    margin-top: 22px;
    border-top: 1px solid var(--line);
    font-size: var(--font-size-ui);
}

.home-page-nav > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 44px;
    padding: 12px 0;
    color: var(--cream-soft);
    font-weight: 500;
    cursor: pointer;
}

.home-page-nav > summary svg {
    flex: 0 0 18px;
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: square;
}

.home-page-nav[open] > summary svg { transform: rotate(180deg); }
.home-page-nav > summary:hover { color: var(--gold); }
.home-page-nav > summary:focus-visible { outline-offset: 3px; }
.home-page-nav .chapter-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
    gap: 0 20px;
    height: auto;
    padding-bottom: 10px;
    overflow: visible;
}

.home-page-nav .chapter-nav a {
    display: inline-flex;
    min-width: 44px;
    min-height: 44px;
    padding: 8px 0;
    color: var(--muted);
    font: 500 var(--font-size-ui)/1.5 var(--font-body);
    letter-spacing: normal;
}

.home-page-nav .chapter-nav a::after { display: none; }
.home-page-nav .chapter-nav a:hover { color: var(--cream); }
.home-page-nav .chapter-nav a[aria-current="location"] { color: var(--gold); text-decoration: underline; }
.home-page-nav .chapter-nav a:focus-visible { outline-offset: 3px; }

@media (max-width: 760px) {
    :root { --header-height: 4rem; }

    .site-header,
    html:not(.reading-nav-enhanced) .reading-hud.site-header {
        gap: 12px;
        padding-inline: 20px;
    }

    .site-header .site-brand { gap: 8px; }
    .site-header .site-brand > span { font-size: .8rem; }
    .site-header .site-brand small { font-size: .875rem; }
    .site-menu { display: flex; flex: 0 0 auto; align-items: center; }
    .site-menu > .site-menu-toggle { display: inline-flex; gap: 9px; }
    .site-menu[open] > .site-menu-toggle { color: var(--cream); }
    .site-menu::details-content { content-visibility: hidden; height: auto; }
    .site-menu[open]::details-content { content-visibility: visible; }
    .site-menu > .site-navigation {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        display: none;
        flex-wrap: nowrap;
        align-content: normal;
        align-items: stretch;
        justify-content: flex-start;
        gap: 0;
        height: auto;
        max-height: calc(100svh - var(--header-height));
        padding: 12px 20px 20px;
        overflow-y: auto;
        overscroll-behavior: contain;
        scrollbar-color: var(--line-strong) var(--ink);
        border-bottom: 1px solid var(--line-strong);
        background: #050c17;
    }

    .site-menu[open] > .site-navigation { display: flex; flex-direction: column; }
    .site-navigation > a,
    .site-navigation > .site-home-link {
        display: flex;
        flex: 0 0 auto;
        justify-content: flex-start;
        min-height: 48px;
        padding: 12px 4px;
        border-bottom: 0;
        font-size: .9375rem;
    }

    .site-navigation > a[aria-current] { color: var(--gold); text-decoration: underline; text-underline-offset: 5px; }
    .site-navigation > a:focus-visible { outline-offset: -3px; }
    .site-more { flex: 0 0 auto; width: 100%; margin-top: 8px; border-top: 1px solid var(--line); }
    .site-more > summary { display: none; }
    .site-more::details-content { content-visibility: visible; }
    .site-more-links {
        position: static;
        grid-template-columns: repeat(auto-fit, minmax(min(100%, 8em), 1fr));
        font-size: .9375rem;
        gap: 0 16px;
        min-width: 0;
        padding: 8px 0 0;
        border: 0;
        background: transparent;
    }

    .site-more-links a { min-height: 48px; padding: 12px 4px; font-size: .9375rem; }
    .site-footer-nav { gap: 0 20px; }
}

@media (max-width: 420px) {
    .site-header .brand-full { display: none; }
    .site-header .brand-short { display: inline; }
}

/* Older engines cannot reveal closed details with CSS. Keep their native
   disclosures available until the script has set the appropriate open states. */
@supports not selector(::details-content) {
    html:not(.site-navigation-enhanced) .site-menu { display: flex; align-items: center; }
    html:not(.site-navigation-enhanced) .site-menu > .site-menu-toggle { display: inline-flex; }
    html:not(.site-navigation-enhanced) .site-menu > .site-navigation {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        height: auto;
        max-height: calc(100svh - var(--header-height));
        padding: 16px 20px;
        overflow-y: auto;
        border-bottom: 1px solid var(--line-strong);
        background: #050c17;
    }
    html:not(.site-navigation-enhanced) .site-navigation > a,
    html:not(.site-navigation-enhanced) .site-more > summary {
        display: flex;
        justify-content: flex-start;
    }
    html:not(.site-navigation-enhanced) .site-more-links {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        min-width: 0;
        padding: 8px 0;
        border: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-navigation > a,
    .site-more > summary,
    .site-menu > .site-menu-toggle { transition: none; }
}