/**
 * pgm/photo-slider — フロント・エディタ共通スタイル (4 バリアント)
 *
 * block.json の "style" で指定することで、エディタ画面 (iframe内) と
 * フロント表示の両方で同じ CSS が適用される (= 編集中の見た目とフロント表示が一致)。
 *
 * 構造:
 *   .pgm-photo-slider               外側ラッパー (view.js が矢印・ドット等を追加)
 *     .pgm-photo-slider__track      scroll-snap コンテナ
 *       figure.wp-block-image       各スライド (core/image)
 *         img
 *         figcaption                キャプション
 *
 * 4 variants (block.json の styles):
 *   .is-style-photo-slider     王道 1 枚スライド: カード型・矢印 + ドット (default)
 *   .is-style-photo-filmstrip  フィルム型: 隣のコマがチラ見え・キャプション画像内オーバーレイ
 *   .is-style-photo-fade       エディトリアル: 中央キャプション + "01 / 04" カウンター
 *   .is-style-photo-spotlight  サムネイル: 大ビジュアル + サムネイル列ナビ
 */

/* ==========================================================================
   共通: ラッパー
   ========================================================================== */
.pgm-photo-slider {
	position: relative;
	margin: 1.5rem 0;
}

/* スライダー内の img は記事本文用の .article-body-content img margin-top: 24px の
   影響を受けるため、ここで明示的に打ち消す。詳細度を (0,2,1) に上げてテーマ側
   ルールに必ず勝つようにする。 */
.pgm-photo-slider .pgm-photo-slider__track img,
.pgm-photo-slider .pgm-photo-slider__thumbs img {
	margin: 0;
}

/* ==========================================================================
   共通: scroll コンテナとしての track
   ========================================================================== */
.pgm-photo-slider__track {
	display: flex;
	flex-wrap: nowrap;
	gap: 0;
	overflow-x: auto;
	overflow-y: hidden;
	scroll-snap-type: x mandatory;
	scroll-behavior: smooth;
	-webkit-overflow-scrolling: touch;
	scrollbar-width: none;
	margin: 0;
	padding: 0;
}

.pgm-photo-slider__track::-webkit-scrollbar {
	display: none;
}

.pgm-photo-slider__track > .wp-block-image,
.pgm-photo-slider__track > figure.wp-block-image {
	margin: 0;
	scroll-snap-align: start;
	scroll-snap-stop: always;
	display: flex;
	flex-direction: column;
}

.pgm-photo-slider__track > .wp-block-image img,
.pgm-photo-slider__track > figure.wp-block-image img {
	width: 100%;
	height: auto;
	object-fit: cover;
	display: block;
}

/* ==========================================================================
   共通: 矢印ボタン (slider / filmstrip / fade で使用)
   view.js が動的に挿入する。
   ========================================================================== */
.pgm-photo-slider__arrow {
	position: absolute;
	width: 40px;
	height: 40px;
	border: none;
	border-radius: 50%;
	background-color: rgba(255, 255, 255, 0.92);
	color: var(--wp--preset--color--primary);
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
	transition: background-color 0.15s ease, color 0.15s ease;
	z-index: 2;
	padding: 0;
}

.pgm-photo-slider__arrow:hover,
.pgm-photo-slider__arrow:focus-visible {
	background-color: var(--wp--preset--color--primary);
	color: var(--wp--preset--color--white);
}

.pgm-photo-slider__arrow:focus-visible {
	outline: 2px solid var(--wp--preset--color--primary);
	outline-offset: 2px;
}

/* ==========================================================================
   共通: ドット (slider のみ)
   ========================================================================== */
.pgm-photo-slider__dots {
	display: flex;
	justify-content: center;
	gap: 0.5rem;
	margin-top: 0.75rem;
}

.pgm-photo-slider__dot {
	width: 8px;
	height: 8px;
	padding: 0;
	border: none;
	border-radius: 50%;
	background-color: var(--wp--preset--color--gray);
	cursor: pointer;
	transition: background-color 0.15s ease, transform 0.15s ease;
}

.pgm-photo-slider__dot:hover {
	background-color: var(--wp--preset--color--primary);
}

.pgm-photo-slider__dot.is-active {
	background-color: var(--wp--preset--color--primary);
	transform: scale(1.3);
}

.pgm-photo-slider__dot:focus-visible {
	outline: 2px solid var(--wp--preset--color--primary);
	outline-offset: 2px;
}

/* ==========================================================================
   バリアント A: 標準 (.is-style-photo-slider) — カード型 1 枚スライド
   ========================================================================== */
.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track {
	border-radius: 8px;
	background-color: var(--wp--preset--color--bg-alt);
}

.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > .wp-block-image,
.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > figure.wp-block-image {
	flex: 0 0 100%;
	width: 100%;
	max-width: 100%;
}

.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > .wp-block-image img,
.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > figure.wp-block-image img {
	aspect-ratio: 16 / 10;
}

.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > .wp-block-image figcaption,
.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > figure.wp-block-image figcaption {
	margin: 0;
	padding: 0.75rem 1rem;
	font-family: var(--wp--preset--font-family--body);
	font-size: 0.875rem;
	line-height: 1.6;
	color: var(--wp--preset--color--contrast);
	background-color: var(--wp--preset--color--white);
	text-align: left;
}

.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__arrow {
	top: calc(50% - 1.75rem);
	transform: translateY(-50%);
}

.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__arrow--prev { left: 0.75rem; }
.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__arrow--next { right: 0.75rem; }

/* ==========================================================================
   バリアント B: フィルム (.is-style-photo-filmstrip) — 隣のコマがチラ見え
   ========================================================================== */
.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track {
	background: transparent;
	padding: 0 0 0.5rem;
	scroll-padding-left: 1.5rem;
	gap: 0.85rem;
}

.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image,
.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image {
	flex: 0 0 78%;
	max-width: 78%;
	position: relative;
}

.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image:first-child,
.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image:first-child {
	margin-left: 1.5rem;
}

.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image:last-child,
.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image:last-child {
	margin-right: 1.5rem;
}

.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image img,
.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image img {
	aspect-ratio: 3 / 2;
	border-radius: 2px;
}

.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image figcaption,
.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image figcaption {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	margin: 0;
	padding: 2rem 1.25rem 1rem;
	font-family: var(--wp--preset--font-family--body);
	font-size: 0.85rem;
	line-height: 1.6;
	color: #fff;
	background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.55) 60%, rgba(0,0,0,0.75) 100%);
	text-align: left;
	pointer-events: none;
}

.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__arrow {
	top: calc(50% - 0.5rem);
	transform: translateY(-50%);
	width: 36px;
	height: 36px;
}

.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__arrow--prev { left: 0.5rem; }
.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__arrow--next { right: 0.5rem; }

/* ==========================================================================
   バリアント C: エディトリアル (.is-style-photo-fade) — 中央キャプション + カウンター
   ========================================================================== */
.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track {
	background-color: var(--wp--preset--color--white);
	border: 1px solid var(--wp--preset--color--gray-light);
	padding: 0;
}

.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > .wp-block-image,
.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > figure.wp-block-image {
	flex: 0 0 100%;
	width: 100%;
	max-width: 100%;
}

.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > .wp-block-image img,
.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > figure.wp-block-image img {
	aspect-ratio: 16 / 9;
}

.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > .wp-block-image figcaption,
.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > figure.wp-block-image figcaption {
	margin: 0;
	padding: 1.25rem 2rem 1.5rem;
	font-family: 'Shippori Mincho', var(--wp--preset--font-family--heading);
	font-size: 0.95rem;
	font-style: italic;
	line-height: 1.7;
	color: var(--wp--preset--color--contrast);
	background-color: var(--wp--preset--color--white);
	text-align: center;
	border-top: 1px solid var(--wp--preset--color--gray-light);
}

.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow {
	top: 50%;
	transform: translateY(-50%);
	background: transparent;
	box-shadow: none;
	border: 1px solid var(--wp--preset--color--gray-light);
	color: var(--wp--preset--color--contrast);
	width: 38px;
	height: 38px;
}

.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow:hover,
.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow:focus-visible {
	background: var(--wp--preset--color--contrast);
	color: var(--wp--preset--color--white);
	border-color: var(--wp--preset--color--contrast);
}

.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow--prev { left: 0.75rem; top: calc(50% - 1.75rem); }
.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow--next { right: 0.75rem; top: calc(50% - 1.75rem); }

/* ==========================================================================
   バリアント D: サムネイル (.is-style-photo-spotlight) — 大ビジュアル + サムネイル列
   ========================================================================== */
.pgm-photo-slider.is-style-photo-spotlight .pgm-photo-slider__track {
	background: transparent;
	padding: 0;
	border-radius: 4px;
	overflow-x: auto;
}

.pgm-photo-slider.is-style-photo-spotlight .pgm-photo-slider__track > .wp-block-image,
.pgm-photo-slider.is-style-photo-spotlight .pgm-photo-slider__track > figure.wp-block-image {
	flex: 0 0 100%;
	width: 100%;
	max-width: 100%;
	position: relative;
}

.pgm-photo-slider.is-style-photo-spotlight .pgm-photo-slider__track > .wp-block-image img,
.pgm-photo-slider.is-style-photo-spotlight .pgm-photo-slider__track > figure.wp-block-image img {
	aspect-ratio: 4 / 3;
	border-radius: 4px;
}

.pgm-photo-slider.is-style-photo-spotlight .pgm-photo-slider__track > .wp-block-image figcaption,
.pgm-photo-slider.is-style-photo-spotlight .pgm-photo-slider__track > figure.wp-block-image figcaption {
	margin: 0;
	padding: 1rem 0 0;
	font-family: var(--wp--preset--font-family--body);
	font-size: 0.9rem;
	line-height: 1.7;
	color: var(--wp--preset--color--contrast);
	text-align: left;
	background: transparent;
}

.pgm-photo-slider__thumbs {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
	gap: 0.5rem;
	margin-top: 0.85rem;
}

/* button の高さは padding-bottom 75% で 4:3 を確保 (aspect-ratio より確実)。
   line-height/font-size: 0 で button 内の line-box を完全消去しないと、
   position: absolute の img でも line-box ベースラインで下にズレることがある。 */
.pgm-photo-slider__thumb {
	position: relative;
	display: block;
	width: 100%;
	height: 0;
	padding: 0 0 75%;
	margin: 0;
	border: none;
	background: transparent;
	cursor: pointer;
	overflow: hidden;
	border-radius: 2px;
	box-sizing: content-box;
	-webkit-appearance: none;
	appearance: none;
	font-size: 0;
	line-height: 0;
	vertical-align: top;
	transition: opacity 0.15s ease;
	opacity: 0.55;
}

.pgm-photo-slider__thumb img {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.pgm-photo-slider__thumb:hover,
.pgm-photo-slider__thumb:focus-visible,
.pgm-photo-slider__thumb.is-active {
	opacity: 1;
}

/* アクティブ枠は ::after で描画する。
   button のデフォルトスタイル (line-height・ベースライン) の影響を受けず、
   img と完全に同じ box (inset: 0) に枠を重ねるため、ズレが原理的に発生しない。 */
.pgm-photo-slider__thumb::after {
	content: "";
	position: absolute;
	inset: 0;
	border: 2px solid transparent;
	border-radius: 2px;
	box-sizing: border-box;
	pointer-events: none;
	transition: border-color 0.15s ease;
}

.pgm-photo-slider__thumb.is-active::after {
	border-color: var(--wp--preset--color--primary);
}

.pgm-photo-slider__thumb:focus-visible {
	outline: 2px solid var(--wp--preset--color--primary);
	outline-offset: 2px;
}

/* ==========================================================================
   モバイル
   ========================================================================== */
@media (max-width: 600px) {
	.pgm-photo-slider__arrow {
		width: 36px;
		height: 36px;
	}

	.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > .wp-block-image img,
	.pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > figure.wp-block-image img {
		aspect-ratio: 4 / 3;
	}

	.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image,
	.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image {
		flex-basis: 88%;
		max-width: 88%;
	}

	.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image:first-child,
	.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image:first-child {
		margin-left: 1rem;
	}

	.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image:last-child,
	.pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image:last-child {
		margin-right: 1rem;
	}

	.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > .wp-block-image img,
	.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > figure.wp-block-image img {
		aspect-ratio: 4 / 3;
	}

	.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow--prev { left: 0.5rem; }
	.pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow--next { right: 0.5rem; }

	.pgm-photo-slider__thumbs {
		grid-template-columns: repeat(auto-fit, minmax(64px, 1fr));
		gap: 0.4rem;
	}
}

/* ==========================================================================
   ブロックスタイルプレビュー (右サイドバー) 用の上書き
   ──────────────────────────────────────────────────────────────────────────
   BlockStyles プレビューは固定 500px 幅の iframe で動作するため、上の
   @media (max-width: 600px) モバイルレイアウトが発火してしまい、本番の
   デスクトップ表示が伝わらない。ここでデスクトップ値を再適用する。
   フロント表示には .block-editor-block-preview__content が存在しないため影響なし。
   ========================================================================== */
.block-editor-block-preview__content .pgm-photo-slider__arrow {
	width: 40px;
	height: 40px;
}

/* slider: 16/10 アスペクトを復元 */
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > .wp-block-image img,
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-slider .pgm-photo-slider__track > figure.wp-block-image img {
	aspect-ratio: 16 / 10;
}

/* filmstrip: 78% peek 幅と desktop margin を復元 */
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image,
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image {
	flex-basis: 78%;
	max-width: 78%;
}
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image:first-child,
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image:first-child {
	margin-left: 1.5rem;
}
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > .wp-block-image:last-child,
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-filmstrip .pgm-photo-slider__track > figure.wp-block-image:last-child {
	margin-right: 1.5rem;
}

/* fade: 16/9 アスペクトと desktop 矢印位置を復元 */
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > .wp-block-image img,
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__track > figure.wp-block-image img {
	aspect-ratio: 16 / 9;
}
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow--prev { left: 0.75rem; }
.block-editor-block-preview__content .pgm-photo-slider.is-style-photo-fade .pgm-photo-slider__arrow--next { right: 0.75rem; }

/* spotlight: サムネイル列 desktop サイズを復元 */
.block-editor-block-preview__content .pgm-photo-slider__thumbs {
	grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
	gap: 0.5rem;
}

/* ==========================================================================
   ライトボックス (画像クリックで拡大表示)
   ──────────────────────────────────────────────────────────────────────────
   フォトギャラリー (.pgm-lightbox) と同じデザイン / 同じクラス名を使用。
   ページに既に .pgm-lightbox が存在すれば view.js はそれを再利用するので、
   ここの CSS と重複してもブロック単体で動作するための保険として残す。
   ========================================================================== */
.pgm-lightbox {
	position: fixed;
	inset: 0;
	z-index: 10000;
	background: rgba(0, 0, 0, 0.85);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: zoom-out;
	transition: opacity 0.25s;
}

.pgm-lightbox[aria-hidden="true"] {
	opacity: 0;
	pointer-events: none;
}

.pgm-lightbox[aria-hidden="false"] {
	opacity: 1;
}

.pgm-lightbox__img {
	max-width: 90vw;
	max-height: 90vh;
	object-fit: contain;
	border-radius: 4px;
}