/* MR.HIRO DRIVING TOUR - GALLERY セクション専用CSS */

.dtour-gallery__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--dtour-space-xs);
}

.dtour-gallery__thumb {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    background: none;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--dtour-radius-sm);
    cursor: zoom-in;
}

.dtour-gallery__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--dtour-transition);
}

.dtour-gallery__thumb:hover img {
    transform: scale(1.04);
}

.dtour-gallery__thumb:focus-visible {
    outline: 2px solid var(--dtour-color-text);
    outline-offset: 2px;
}

/* --- ライトボックス --- */
.dtour-gallery__box {
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    background: rgba(0, 0, 0, 0.92);
}

.dtour-gallery__box[open] {
    display: flex;
    align-items: center;
    justify-content: center;
}

.dtour-gallery__box::backdrop {
    background: rgba(0, 0, 0, 0.92);
}

.dtour-gallery__big {
    max-width: 92vw;
    max-height: 84vh;
    object-fit: contain;
}

.dtour-gallery__nav,
.dtour-gallery__close {
    position: absolute;
    width: 48px;
    height: 48px;
    font-size: 32px;
    line-height: 1;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    border: 0;
    border-radius: 50%;
    cursor: pointer;
}

.dtour-gallery__nav:hover,
.dtour-gallery__close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.dtour-gallery__nav--prev { left: 12px; top: 50%; transform: translateY(-50%); }
.dtour-gallery__nav--next { right: 12px; top: 50%; transform: translateY(-50%); }
.dtour-gallery__close     { right: 12px; top: 12px; }

/* --- タブレット（768px〜）：3列 --- */
@media (min-width: 768px) {
    .dtour-gallery__list {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--dtour-space-sm);
    }
}

/* --- PC（1024px〜）：4列 --- */
@media (min-width: 1024px) {
    .dtour-gallery__list {
        grid-template-columns: repeat(4, 1fr);
    }
}