/* ===================================================
   Hovering Image Stack — bkbg-his-*  (style.css)
   =================================================== */

.bkbg-his-wrap {
    width: 100%;
}

.bkbg-his-outer {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 16px;
}

/* ── Stack container ───────────────────────────────────────────────── */
.bkbg-his-stack {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

/* ── Individual card ───────────────────────────────────────────────── */
.bkbg-his-card {
    position: absolute;
    overflow: hidden;
    will-change: transform;
    transition: transform 0.45s cubic-bezier(.34,1.56,.64,1),
                box-shadow 0.3s ease,
                z-index 0s;
}

.bkbg-his-card img {
    width:   100%;
    height:  100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
    user-select: none;
}

/* ── Caption typography (CSS-var driven) ───────────────────────────── */
.bkbg-his-caption {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 8px 12px;
    text-align: center;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    font-family: var(--bkbg-his-cap-font-family, inherit);
    font-size: var(--bkbg-his-cap-font-size-d, var(--bkbg-his-cap-sz, 13px));
    font-weight: var(--bkbg-his-cap-font-weight, 600);
    font-style: var(--bkbg-his-cap-font-style, normal);
    text-decoration: var(--bkbg-his-cap-text-decoration, none);
    text-transform: var(--bkbg-his-cap-text-transform, none);
    line-height: var(--bkbg-his-cap-line-height-d, 1.4);
    letter-spacing: var(--bkbg-his-cap-letter-spacing-d, normal);
    word-spacing: var(--bkbg-his-cap-word-spacing-d, normal);
}

/* ── Responsive: Tablet ── */
@media (max-width: 1024px) {
    .bkbg-his-caption {
        font-size: var(--bkbg-his-cap-font-size-t, var(--bkbg-his-cap-font-size-d, var(--bkbg-his-cap-sz, 13px)));
        line-height: var(--bkbg-his-cap-line-height-t, var(--bkbg-his-cap-line-height-d, 1.4));
        letter-spacing: var(--bkbg-his-cap-letter-spacing-t, var(--bkbg-his-cap-letter-spacing-d, normal));
        word-spacing: var(--bkbg-his-cap-word-spacing-t, var(--bkbg-his-cap-word-spacing-d, normal));
    }
}

/* ── Responsive: Mobile ── */
@media (max-width: 767px) {
    .bkbg-his-caption {
        font-size: var(--bkbg-his-cap-font-size-m, var(--bkbg-his-cap-font-size-t, var(--bkbg-his-cap-font-size-d, var(--bkbg-his-cap-sz, 13px))));
        line-height: var(--bkbg-his-cap-line-height-m, var(--bkbg-his-cap-line-height-t, var(--bkbg-his-cap-line-height-d, 1.4)));
        letter-spacing: var(--bkbg-his-cap-letter-spacing-m, var(--bkbg-his-cap-letter-spacing-t, var(--bkbg-his-cap-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-his-cap-word-spacing-m, var(--bkbg-his-cap-word-spacing-t, var(--bkbg-his-cap-word-spacing-d, normal)));
    }
}

.bkbg-his-stack:hover .bkbg-his-caption {
    opacity: 1;
    transform: translateY(0);
}

/* ── Reduced motion ────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .bkbg-his-card { transition: none !important; }
}