/* Gallery block — layout theo số lượng ảnh (P1) */
.block-gallery {
    display: grid;
    gap: 6px;
    width: 100%;
}

.block-gallery__item {
    display: block;
    overflow: hidden;
    position: relative;
    line-height: 0;
    transition: opacity .2s ease;
}

.block-gallery__item:hover {
    opacity: .92;
}

.block-gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.block-gallery--inset {
    padding-left: 1%;
    padding-right: 1%;
}

/* 1 ảnh — full width */
.block-gallery--n1 {
    grid-template-columns: 1fr;
}

.block-gallery--n1 .block-gallery__item {
    aspect-ratio: 16 / 10;
    border-radius: 12px;
}

/* 2 ảnh — 50/50 */
.block-gallery--n2 {
    grid-template-columns: 1fr 1fr;
}

.block-gallery--n2 .block-gallery__item {
    aspect-ratio: 4 / 3;
    border-radius: 10px;
}

/* 3 ảnh — trái lớn 2/3, phải 2 ảnh xếp dọc */
.block-gallery--n3 {
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr 1fr;
    min-height: 280px;
}

.block-gallery--n3 .block-gallery__item:first-child {
    grid-row: 1 / 3;
    grid-column: 1;
    border-radius: 12px 0 0 12px;
}

.block-gallery--n3 .block-gallery__item:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
    border-radius: 0 12px 0 0;
}

.block-gallery--n3 .block-gallery__item:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
    border-radius: 0 0 12px 0;
}

/* 4 ảnh — lưới 2×2, bo góc ngoài block */
.block-gallery--n4 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 4px;
    border-radius: 12px;
    overflow: hidden;
}

.block-gallery--n4 .block-gallery__item {
    aspect-ratio: 1;
    min-height: 120px;
}

/* 5 ảnh — hàng trên 2, hàng dưới 3 */
.block-gallery--n5 {
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
}

.block-gallery--n5 .block-gallery__item:nth-child(1),
.block-gallery--n5 .block-gallery__item:nth-child(2) {
    grid-column: span 3;
    aspect-ratio: 16 / 10;
    border-radius: 10px;
}

.block-gallery--n5 .block-gallery__item:nth-child(3),
.block-gallery--n5 .block-gallery__item:nth-child(4),
.block-gallery--n5 .block-gallery__item:nth-child(5) {
    grid-column: span 2;
    aspect-ratio: 4 / 3;
    border-radius: 10px;
}

/* 6 ảnh — lưới 3×2 */
.block-gallery--n6 {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    border-radius: 12px;
    overflow: hidden;
}

.block-gallery--n6 .block-gallery__item {
    aspect-ratio: 4 / 3;
    min-height: 100px;
}

/* 7+ ảnh — lưới 3 cột */
.block-gallery--many {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.block-gallery--many .block-gallery__item {
    aspect-ratio: 4 / 3;
    border-radius: 8px;
}

@media (max-width: 767.98px) {
    .block-gallery--n2 {
        grid-template-columns: 1fr;
    }

    .block-gallery--n2 .block-gallery__item {
        aspect-ratio: 16 / 10;
    }

    .block-gallery--n3 {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto auto;
        min-height: 0;
    }

    .block-gallery--n3 .block-gallery__item:first-child {
        grid-column: 1 / -1;
        grid-row: 1;
        aspect-ratio: 16 / 10;
        border-radius: 12px 12px 0 0;
    }

    .block-gallery--n3 .block-gallery__item:nth-child(2) {
        grid-row: 2;
        grid-column: 1;
        border-radius: 0 0 0 12px;
        aspect-ratio: 4 / 3;
    }

    .block-gallery--n3 .block-gallery__item:nth-child(3) {
        grid-row: 2;
        grid-column: 2;
        border-radius: 0 0 12px 0;
        aspect-ratio: 4 / 3;
    }

    .block-gallery--n5 {
        grid-template-columns: 1fr 1fr;
    }

    .block-gallery--n5 .block-gallery__item:nth-child(1),
    .block-gallery--n5 .block-gallery__item:nth-child(2),
    .block-gallery--n5 .block-gallery__item:nth-child(3),
    .block-gallery--n5 .block-gallery__item:nth-child(4),
    .block-gallery--n5 .block-gallery__item:nth-child(5) {
        grid-column: span 1;
    }

    .block-gallery--n5 .block-gallery__item:first-child {
        grid-column: 1 / -1;
    }

    .block-gallery--n6,
    .block-gallery--many {
        grid-template-columns: repeat(2, 1fr);
    }
}