/* ==========================================================================
   BLOCK: MEDIA GALLERY - the members image catalog. Continent > region >
   country hierarchy as native <details>; thumbnails zoom via the
   Popover API (top layer, light-dismiss, Esc) - no JavaScript, no
   positioned overlays.
   ========================================================================== */

@scope (.block-media-gallery) {
    :scope {
        padding-block: var(--space-lg);
        container-type: inline-size;
        container-name: mgal;
    }

    /* ------------------------------------------------- HIERARCHY ------- */
    .mg-continent { border-block-start: 1px solid var(--border-light); }
    .mg-continent:last-of-type { border-block-end: 1px solid var(--border-light); }
    .mg-continent > summary {
        list-style: none;
        cursor: pointer;
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        gap: 20px;
        padding-block: clamp(22px, 2.6cqw, 36px);
    }
    .mg-continent > summary::-webkit-details-marker { display: none; }
    .mg-continent > summary h2 {
        margin: 0;
        font-weight: 100;
        font-size: clamp(1.7rem, 3cqw, 2.6rem);
        letter-spacing: -0.03em;
        line-height: 1;
    }
    .mg-continent[open] > summary h2 { font-weight: 800; }
    .mg-continent > summary h2::after {
        content: "+" / "";
        display: inline-block;
        margin-inline-start: 14px;
        font-weight: 100;
        color: var(--accent-ink);
        transition: rotate 0.3s var(--ease-lux);
    }
    .mg-continent[open] > summary h2::after { rotate: 45deg; }
    .mg-continent > summary:focus-visible,
    .mg-country > summary:focus-visible {
        outline: 2px solid var(--accent-lime);
        outline-offset: 4px;
    }
    .mg-count {
        font-size: 0.72rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.14em;
        color: var(--color-text-muted);
    }

    .mg-region {
        font-size: 0.78rem;
        font-weight: 900;
        text-transform: uppercase;
        letter-spacing: 0.18em;
        color: var(--text-secondary);
        margin-block: 6px 14px;
    }

    .mg-country { margin-block-end: clamp(20px, 2.4cqw, 32px); }
    .mg-country > summary {
        list-style: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 14px;
        padding-block: 14px;
        border-block-start: 1px solid var(--border-light);
        font-weight: 800;
        font-size: clamp(1.05rem, 1.3cqw, 1.25rem);
    }
    .mg-country > summary::-webkit-details-marker { display: none; }
    .mg-country > summary img {
        inline-size: 34px;
        block-size: auto;
        display: block;
        border: 1px solid var(--border-light);
    }
    .mg-country > summary:hover { color: var(--accent-ink); }

    /* ------------------------------------------------- THUMB GRID ------ */
    .mg-grid {
        display: grid;
        gap: clamp(12px, 1.6cqw, 20px);
        grid-template-columns: repeat(auto-fill, minmax(min(180px, 100%), 1fr));
        padding-block: 10px clamp(24px, 3cqw, 40px);
    }
    .mg-item {
        border: 0;
        padding: 0;
        background: none;
        font: inherit;
        text-align: start;
        cursor: zoom-in;
        display: grid;
        gap: 8px;
        align-content: start;
        color: var(--text-secondary);
    }
    .mg-item img {
        inline-size: 100%;
        aspect-ratio: 4 / 3;
        object-fit: cover;
        display: block;
        filter: grayscale(15%);
        transition: filter 0.3s;
    }
    .mg-item:hover img, .mg-item:focus-visible img { filter: grayscale(0%); }
    .mg-item:focus-visible { outline: 2px solid var(--accent-lime); outline-offset: 3px; }
    .mg-item span {
        font-size: 0.78rem;
        font-weight: 600;
        line-height: 1.45;
    }

    /* -------------------------------------------------- LIGHTBOX ------- */
    .mg-zoom {
        border: 0;
        padding: 0;
        background: light-dark(#fff, #101010);
        max-inline-size: min(1080px, 92vw);
    }
    .mg-zoom::backdrop { background: rgba(0, 0, 0, 0.82); }
    .mg-zoom img {
        inline-size: 100%;
        max-block-size: 78vh;
        object-fit: contain;
        display: block;
        background: #000;
    }
    .mg-zoom figcaption {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 20px;
        padding: 16px 20px;
        font-weight: 700;
        font-size: 0.9rem;
    }
    .mg-zoom .mg-close {
        border: 1px solid var(--border-light);
        background: none;
        font: inherit;
        font-size: 0.72rem;
        font-weight: 900;
        text-transform: uppercase;
        letter-spacing: 0.16em;
        padding: 10px 18px;
        cursor: pointer;
    }
    .mg-zoom .mg-close:hover { border-color: var(--accent-lime); color: var(--accent-ink); }
}