/* 記事タブ・写真一覧・ライトボックス */

.km-articleTabs {
    margin-top: 16px;
    margin-bottom: 40px;
}

.km-articleTabNav {
    display: flex;
    gap: 12px;
    margin-bottom: 18px;
}

body.single-post .km-articleTabNav {
    width: 100%;
}

.km-articleTab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    min-width: 180px;
    padding: 0 16px;
    border: 1px solid #e5dfd3;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    background-color: #f7f3eb;
    color: #5b5448;
}

body.single-post .km-articleTab {
    flex: 1;
    min-width: 0;
}

.km-articleTab__icon {
    width: 16px;
    height: 16px;
    opacity: 0.9;
}

.km-articleTab__label--short {
    display: none;
}

.km-articleTab__arrow {
    margin-left: 4px;
    font-size: 10px;
    opacity: 0.7;
}

.km-articleTab:hover {
    background-color: #efe7d9;
    border-color: #d7cab3;
    color: #4a4337;
}

.km-articleTab.is-active,
.km-articleTab[aria-selected="true"] {
    background-color: #f4c646;
    border-color: #d4a92e;
    color: #4f4128;
    box-shadow: inset 0 -2px 0 rgba(79, 65, 40, 0.12);
}

.km-articleTab.is-active .km-articleTab__icon,
.km-articleTab[aria-selected="true"] .km-articleTab__icon {
    opacity: 1;
}

.km-articleTabPanel[hidden] {
    display: none;
}

.km-photoGrid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.km-photoGrid__item {
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    overflow: hidden;
    background: transparent;
}

.km-photoGrid__trigger {
    width: 100%;
    height: 100%;
    padding: 0;
    border: none;
    background: transparent;
    cursor: zoom-in;
    display: block;
}

.km-photoGrid__trigger:focus-visible {
    outline: 2px solid var(--km-blue);
    outline-offset: -2px;
}

.km-photoGrid__item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.28s ease;
    border-radius: 10px;
    background: transparent;
}

.km-photoGrid__item:hover img {
    transform: scale(1.04);
}

.km-photoGrid__empty {
    text-align: center;
    padding: 48px 0;
    color: var(--km-text-muted);
    font-weight: 600;
}

.km-photoLightbox {
    position: fixed;
    inset: 0;
    z-index: 100001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease;
}

.km-photoLightbox[hidden] {
    display: none;
}

.km-photoLightbox.is-open {
    opacity: 1;
    pointer-events: auto;
}

.km-photoLightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(18, 18, 18, 0.82);
}

.km-photoLightbox__dialog {
    position: relative;
    z-index: 1;
    width: min(92vw, 1180px);
    max-height: 88vh;
    padding: 18px 54px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 24px 56px rgba(0, 0, 0, 0.35);
}

.km-photoLightbox__nav {
    position: absolute;
    top: 50%;
    width: 40px;
    height: 40px;
    margin-top: -20px;
    border: none;
    border-radius: 999px;
    background: rgba(32, 32, 32, 0.72);
    color: #fff;
    cursor: pointer;
    z-index: 2;
}

.km-photoLightbox__nav::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 11px;
    height: 11px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
}

.km-photoLightbox__nav--prev {
    left: 10px;
}

.km-photoLightbox__nav--prev::before {
    transform: translate(-32%, -50%) rotate(-135deg);
}

.km-photoLightbox__nav--next {
    right: 10px;
}

.km-photoLightbox__nav--next::before {
    transform: translate(-68%, -50%) rotate(45deg);
}

.km-photoLightbox__nav[disabled] {
    opacity: 0.3;
    cursor: default;
}

.km-photoLightbox__image {
    display: block;
    width: 100%;
    max-width: 100%;
    max-height: calc(88vh - 36px);
    object-fit: contain;
    border-radius: 10px;
}

.km-photoLightbox__close {
    position: absolute;
    top: 8px;
    right: 10px;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 999px;
    background: rgba(32, 32, 32, 0.76);
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}

body.km-lightbox-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .km-articleTabs .km-articleTabNav {
        gap: 8px;
    }

    .km-articleTabNav > .km-articleTab {
        min-width: 0;
        flex: 1;
        padding: 10px 12px;
        gap: 6px;
        font-size: 13px;
        white-space: nowrap;
    }

    .km-articleTab__label--full {
        display: none;
    }

    .km-articleTab__label--short {
        display: inline;
    }

    .km-articleTab__arrow {
        margin-left: 0;
    }

    .km-photoGrid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .km-photoGrid__trigger {
        padding: 0;
    }

    .km-photoLightbox__dialog {
        width: calc(100vw - 24px);
        padding: 12px 40px;
    }

    .km-photoLightbox__image {
        max-height: calc(84vh - 24px);
    }

    .km-photoLightbox__nav {
        width: 34px;
        height: 34px;
        margin-top: -17px;
    }

    .km-photoLightbox__nav--prev {
        left: 4px;
    }

    .km-photoLightbox__nav--next {
        right: 4px;
    }
}