/* ================================================================
   GALLERY — Grid con lightbox (reemplaza al plugin Modula)
   ================================================================ */
.gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 200px;
    gap: var(--space-sm);
}

@media (min-width: 640px) {
    .gallery {
        grid-template-columns: repeat(4, 1fr);
        grid-auto-rows: 220px;
    }

    /* Masonry sin huecos: 2 columnas altas en los extremos,
       2 barras anchas al centro, fila de 4 cuadros abajo. */
    .gallery__item:nth-child(1) { grid-column: 1; grid-row: 1 / span 2; }
    .gallery__item:nth-child(2) { grid-column: 2 / span 2; grid-row: 1; }
    .gallery__item:nth-child(3) { grid-column: 4; grid-row: 1 / span 2; }
    .gallery__item:nth-child(4) { grid-column: 2 / span 2; grid-row: 2; }
    .gallery__item:nth-child(5) { grid-column: 1; grid-row: 3; }
    .gallery__item:nth-child(6) { grid-column: 2; grid-row: 3; }
    .gallery__item:nth-child(7) { grid-column: 3; grid-row: 3; }
    .gallery__item:nth-child(8) { grid-column: 4; grid-row: 3; }
}

@media (min-width: 1024px) {
    .gallery {
        grid-auto-rows: 260px;
    }
}

.gallery__item {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: var(--radius-sm);
    cursor: zoom-in;
}

.gallery__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery__item:hover .gallery__img {
    transform: scale(1.06);
}

/* ── Lightbox ─────────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    background-color: rgba(14, 47, 63, 0.94);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.lightbox--open {
    opacity: 1;
    visibility: visible;
}

.lightbox__img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--radius-sm);
}

.lightbox__close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-text-inverse);
    font-size: var(--text-lg);
    transition: background-color var(--transition-fast);
}

.lightbox__close:hover {
    background-color: var(--color-secondary);
    color: var(--color-bg-dark);
}