/* Unified site menubar — shared by pages/, docs/ and tours/. */

cognotik-menubar {
    --mb-bg: #ffffff;
    --mb-fg: #16181d;
    --mb-muted: #5c6470;
    --mb-border: #e3e6ea;
    --mb-accent: #3b5bfd;
    --mb-hover: #f4f6f9;
    --mb-shadow: 0 12px 32px rgba(15, 20, 35, .14);
    --mb-height: 56px;

    display: block;
    position: sticky;
    top: 0;
    z-index: 900;
    font: 500 15px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--mb-fg);
    background: var(--mb-bg);
    border-bottom: 1px solid var(--mb-border);
}

@media (prefers-color-scheme: dark) {
    cognotik-menubar {
        --mb-bg: #14161b;
        --mb-fg: #e8ebf0;
        --mb-muted: #9aa3b0;
        --mb-border: #262b33;
        --mb-hover: #1d2129;
        --mb-shadow: 0 12px 32px rgba(0, 0, 0, .5);
    }
}

[data-theme="dark"] cognotik-menubar {
    --mb-bg: #14161b;
    --mb-fg: #e8ebf0;
    --mb-muted: #9aa3b0;
    --mb-border: #262b33;
    --mb-hover: #1d2129;
}

.site-menubar {
    display: flex;
    align-items: center;
    gap: .5rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    min-height: var(--mb-height);
}

.site-menubar__brand {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-weight: 700;
    text-decoration: none;
    color: inherit;
    white-space: nowrap;
}

.site-menubar__brand-mark { color: var(--mb-accent); }

.site-menubar__toggle {
    margin-left: auto;
    display: none;
    min-width: 44px;
    min-height: 44px;
    font-size: 1.15rem;
    background: none;
    border: 1px solid var(--mb-border);
    border-radius: 8px;
    color: inherit;
    cursor: pointer;
}

.site-menubar__panel {
    display: flex;
    flex: 1;
    align-items: center;
    gap: .25rem;
}

.site-menubar__list,
.site-menubar__utilities {
    display: flex;
    align-items: center;
    gap: .1rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-menubar__utilities { margin-left: auto; gap: .5rem; }

.site-menubar__item { position: relative; display: flex; align-items: center; }

.site-menubar__link,
.site-menubar__utility-link {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .55rem .7rem;
    border-radius: 8px;
    color: inherit;
    text-decoration: none;
    white-space: nowrap;
}

.site-menubar__link:hover,
.site-menubar__link:focus-visible,
.site-menubar__utility-link:hover { background: var(--mb-hover); }

.site-menubar__link.is-current { color: var(--mb-accent); }

.site-menubar__utility-link.is-cta {
    background: var(--mb-accent);
    color: #fff;
    font-weight: 600;
}

.site-menubar__disclosure {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 32px;
    margin-left: -.5rem;
    background: none;
    border: 0;
    color: var(--mb-muted);
    cursor: pointer;
    border-radius: 6px;
}

.site-menubar__item.is-open > .site-menubar__disclosure { transform: rotate(180deg); }

/* ------------------------------------------------------------- dropdowns */

.site-menubar__dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 280px;
    max-width: min(92vw, 760px);
     max-height: min(72vh, 640px);
     overflow-y: auto;
     overscroll-behavior: contain;
    padding: 1rem;
    background: var(--mb-bg);
    border: 1px solid var(--mb-border);
    border-radius: 12px;
    box-shadow: var(--mb-shadow);
}

.site-menubar__dropdown[hidden] { display: none; }

.site-menubar__dropdown-intro {
    margin: 0 0 .75rem;
    color: var(--mb-muted);
    font-size: .85rem;
}

.site-menubar__groups {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem 1.5rem;
}

.site-menubar__group-title {
    display: block;
    margin: 0 0 .15rem;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--mb-muted);
    text-decoration: none;
}

a.site-menubar__group-title:hover { color: var(--mb-accent); }

.site-menubar__group-blurb {
    margin: 0 0 .4rem;
    font-size: .78rem;
    font-weight: 400;
    color: var(--mb-muted);
}

/* --------------------------------------------- collapsible group headers */

.site-menubar__group-details { margin: 0; }

.site-menubar__group-summary {
     display: flex;
     align-items: center;
     justify-content: space-between;
     gap: .5rem;
     min-height: 32px;
     padding: .2rem .35rem;
     margin: 0 0 .15rem;
     border-radius: 7px;
     cursor: pointer;
     list-style: none;
}

.site-menubar__group-summary::-webkit-details-marker { display: none; }
.site-menubar__group-summary::marker { content: ''; }

.site-menubar__group-summary:hover,
.site-menubar__group-summary:focus-visible { background: var(--mb-hover); }

.site-menubar__group-summary .site-menubar__group-title { margin: 0; }

.site-menubar__group-marker {
     flex: none;
     font-size: .7rem;
     line-height: 1;
     color: var(--mb-muted);
     transition: transform .15s ease;
}

.site-menubar__group-details[open] > .site-menubar__group-summary .site-menubar__group-marker {
     transform: rotate(180deg);
}

@media (prefers-reduced-motion: reduce) {
     .site-menubar__group-marker { transition: none; }
}

/* ------------------------------------------------- scrollable entry list */

.site-menubar__group-scroll {
     max-height: 16rem;
     overflow-y: auto;
     overscroll-behavior: contain;
     scrollbar-width: thin;
     scrollbar-color: var(--mb-border) transparent;
}

.site-menubar__group-scroll:focus-visible {
     outline: 2px solid var(--mb-accent);
     outline-offset: 2px;
     border-radius: 7px;
}

.site-menubar__group-scroll::-webkit-scrollbar { width: 8px; }
.site-menubar__group-scroll::-webkit-scrollbar-track { background: transparent; }

.site-menubar__group-scroll::-webkit-scrollbar-thumb {
     background: var(--mb-border);
     border-radius: 4px;
}

.site-menubar__entries { margin: 0; padding: 0; list-style: none; }

.site-menubar__entry-link,
.site-menubar__more {
    display: block;
    padding: .35rem .5rem;
    border-radius: 7px;
    color: inherit;
    text-decoration: none;
}

.site-menubar__entry-link:hover,
.site-menubar__entry-link:focus-visible,
.site-menubar__more:hover { background: var(--mb-hover); }

.site-menubar__entry-link.is-current { color: var(--mb-accent); font-weight: 600; }

.site-menubar__entry-label { display: block; font-size: .9rem; }

.site-menubar__entry-desc {
    display: block;
    font-size: .76rem;
    font-weight: 400;
    color: var(--mb-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.site-menubar__more { font-size: .82rem; color: var(--mb-accent); }

/* ---------------------------------------------------------------- mobile */

@media (max-width: 900px) {
    .site-menubar { flex-wrap: wrap; padding: .5rem 1rem; }

    .site-menubar__toggle { display: inline-flex; align-items: center; justify-content: center; }

    .site-menubar__panel {
        display: none;
        flex-basis: 100%;
        flex-direction: column;
        align-items: stretch;
        max-height: calc(100vh - var(--mb-height));
        overflow-y: auto;
        padding-bottom: .5rem;
    }

    .site-menubar.is-open .site-menubar__panel { display: flex; }

    .site-menubar__list,
    .site-menubar__utilities {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        margin-left: 0;
    }

    .site-menubar__item { flex-wrap: wrap; border-top: 1px solid var(--mb-border); }

    .site-menubar__link { flex: 1; min-height: 44px; }

    .site-menubar__disclosure { width: 44px; height: 44px; margin-left: 0; }

    .site-menubar__dropdown {
        position: static;
        flex-basis: 100%;
        border: 0;
        box-shadow: none;
        padding: .25rem 0 .75rem .75rem;
        min-width: 0;
        max-width: none;
         /* the whole panel already scrolls on mobile */
         max-height: none;
         overflow: visible;
    }

    .site-menubar__groups { grid-template-columns: 1fr; }
     .site-menubar__group-summary { min-height: 44px; }
     .site-menubar__group-scroll { max-height: 55vh; }

    .site-menubar__entry-desc { white-space: normal; }

    .site-menubar__utility-link { justify-content: center; min-height: 44px; }
}