/**
 * ギャラリーページ（自動収集・タブ・マソンリー・ライトボックス）
 *
 * @package Marry_Grace
 * @since 1.8.0
 */

/* ==========================================================================
   見出し
   ========================================================================== */
.gallery-page__head {
	text-align: center;
	padding: var(--space-2xl) var(--space-md) var(--space-lg);
}
.gallery-page__en {
	display: block;
	font-family: var(--font-en);
	font-size: var(--fs-2xl);
	letter-spacing: 0.12em;
	color: var(--color-secondary);
	line-height: 1;
}
.gallery-page__jp {
	font-family: var(--font-jp);
	font-weight: 500;
	font-size: var(--fs-md);
	letter-spacing: 0.2em;
	color: var(--color-text-muted);
	margin: var(--space-sm) 0 0;
}

/* ==========================================================================
   タブ
   ========================================================================== */
.gallery-page__tabs {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: var(--space-lg);
	border-bottom: 1px solid var(--color-border);
	margin: var(--space-xl) 0;
}
.gallery-page__tab {
	appearance: none;
	background: none;
	border: none;
	cursor: pointer;
	font-family: var(--font-jp);
	font-size: var(--fs-md);
	color: var(--color-text-muted);
	padding: 0 var(--space-xs) var(--space-sm);
	margin-bottom: -1px;
	border-bottom: 2px solid transparent;
	transition: color 0.2s ease, border-color 0.2s ease;
}
.gallery-page__tab:hover {
	color: var(--color-text);
}
.gallery-page__tab.is-active {
	color: var(--color-secondary);
	border-bottom-color: var(--color-secondary);
}

/* ==========================================================================
   マソンリー グリッド
   ========================================================================== */
.gallery-page__grid {
	column-count: 3;
	column-gap: var(--space-sm);
	margin-bottom: var(--space-3xl);
}
.gallery-page__empty {
	text-align: center;
	color: var(--color-text-muted);
	padding: var(--space-2xl) 0 var(--space-3xl);
}

.gallery-tile {
	display: block;
	width: 100%;
	padding: 0;
	border: none;
	background: var(--color-bg-mute);
	border-radius: 4px;
	overflow: hidden;
	cursor: pointer;
	break-inside: avoid;
	margin: 0 0 var(--space-sm);
	line-height: 0;
}
.gallery-tile img {
	width: 100%;
	height: auto;
	display: block;
	opacity: 0;
	transform: translateY(8px);
	transition: opacity 0.6s ease, transform 0.6s ease;
}
.gallery-tile img.is-loaded {
	opacity: 1;
	transform: translateY(0);
}
.gallery-tile:hover img.is-loaded {
	opacity: 0.9;
	transform: scale(1.02);
}

@media (max-width: 900px) {
	.gallery-page__grid { column-count: 2; }
}
@media (max-width: 480px) {
	.gallery-page__grid { column-count: 2; column-gap: var(--space-xs); }
}

/* ==========================================================================
   ライトボックス
   ========================================================================== */
.gallery-lightbox {
	position: fixed;
	inset: 0;
	z-index: 1000;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: var(--space-lg);
	background: rgba(34, 30, 26, 0.88);
}
.gallery-lightbox[hidden] {
	display: none;
}
.gallery-lightbox__figure {
	margin: 0;
	max-width: 90vw;
	max-height: 88vh;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--space-sm);
}
.gallery-lightbox__img {
	max-width: 90vw;
	max-height: 78vh;
	object-fit: contain;
	border-radius: 2px;
}
.gallery-lightbox__cap {
	display: flex;
	align-items: center;
	gap: var(--space-md);
	color: #fff;
	font-family: var(--font-jp);
	font-size: var(--fs-sm);
}
.gallery-lightbox__link {
	color: var(--color-secondary);
	font-size: var(--fs-sm);
	white-space: nowrap;
}
.gallery-lightbox__link:hover {
	color: #fff;
}
.gallery-lightbox__close,
.gallery-lightbox__nav {
	position: absolute;
	background: none;
	border: none;
	color: #fff;
	cursor: pointer;
	line-height: 1;
	opacity: 0.85;
	transition: opacity 0.2s ease;
}
.gallery-lightbox__close:hover,
.gallery-lightbox__nav:hover {
	opacity: 1;
}
.gallery-lightbox__close {
	top: var(--space-md);
	right: var(--space-lg);
	font-size: 2.2rem;
}
.gallery-lightbox__nav {
	top: 50%;
	transform: translateY(-50%);
	font-size: 3rem;
	padding: 0 var(--space-sm);
}
.gallery-lightbox__nav--prev { left: var(--space-xs); }
.gallery-lightbox__nav--next { right: var(--space-xs); }

@media (max-width: 767px) {
	.gallery-lightbox__cap {
		flex-direction: column;
		gap: var(--space-xs);
		text-align: center;
	}
	.gallery-lightbox__nav { font-size: 2.2rem; }
}