/**
 * トップ Library — Editorial atelier
 * クリーム→水色の上に、巨大タイポ + 主役カバー + 二段レール
 */

.site-main--front .front-section--library {
	--lib-from: #e7daca;
	--lib-to: #9fd4e8;
	--lib-mix: 0;
	--used-mix: 0;
	--lib-ink: #1a2b48;
	--lib-color-scroll: 70;
	position: relative;
	height: calc( 100vh + ( var( --lib-color-scroll ) * 1vh ) );
	min-height: 0;
	padding: 0;
	display: block;
	border: 0;
	border-top: none;
	border-bottom: none;
	overflow: visible;
	background: var( --lib-from );
	color: var( --lib-ink );
	box-shadow: none;
}

.front-library__wash {
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background: var( --lib-from );
}

.front-library__wash::after {
	content: "";
	position: absolute;
	inset: 0;
	background: var( --lib-to );
	opacity: var( --lib-mix );
}

/* Library 後半〜: 水色の上に紺をのせて Used へつなぐ */
.front-library__wash-used {
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background: #1a2b48;
	opacity: var( --used-mix );
}

.front-library__ghost {
	position: absolute;
	left: 50%;
	top: 42%;
	z-index: 0;
	margin: 0;
	padding: 0;
	width: max-content;
	max-width: none;
	transform: translate( -50%, -50% );
	font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
	font-size: clamp( 5.5rem, 22vw, 16rem );
	font-weight: 700;
	letter-spacing: 0.08em;
	line-height: 0.85;
	color: rgba( 255, 255, 255, 0.72 );
	-webkit-text-stroke: 0;
	text-stroke: 0;
	text-shadow: 0 0 1px rgba( 26, 43, 72, 0.12 );
	pointer-events: none;
	user-select: none;
	white-space: nowrap;
	opacity: calc( 0.75 + ( var( --lib-mix ) * 0.2 ) - ( var( --used-mix ) * 0.55 ) );
}

.front-library__pin {
	position: sticky;
	top: 0;
	z-index: 1;
	height: 100vh;
	height: 100dvh;
	box-sizing: border-box;
	display: flex;
	flex-direction: column;
	background: transparent;
	overflow: hidden;
}

.front-library__inner {
	position: relative;
	z-index: 1;
	flex: 1 1 auto;
	display: flex;
	flex-direction: column;
	gap: clamp( 1rem, 2.4vh, 1.75rem );
	box-sizing: border-box;
	min-height: 0;
	height: 100%;
	/* サイトヘッダ分を避けてロゴブロックを下げる */
	padding: calc( var( --header-height, 4rem ) + clamp( 2rem, 5.5vh, 3.25rem ) )
		clamp( 1.5rem, 5vw, 3.5rem )
		clamp( 1.5rem, 3.5vh, 2.25rem );
}

.front-library__header {
	display: flex;
	align-items: center;
	justify-content: flex-start;
	gap: 1.25rem;
	flex-shrink: 0;
}

.front-library__brand {
	display: flex;
	align-items: center;
	gap: 0.85rem;
	min-width: 0;
}

.front-library__logo {
	display: block;
	flex: 0 0 auto;
	width: clamp( 4rem, 8vw, 5.5rem );
	aspect-ratio: 416 / 406;
	background-color: var( --lib-ink );
	-webkit-mask-image: url( "../images/mouton-library-logo.svg" );
	mask-image: url( "../images/mouton-library-logo.svg" );
	-webkit-mask-size: contain;
	mask-size: contain;
	-webkit-mask-repeat: no-repeat;
	mask-repeat: no-repeat;
	-webkit-mask-position: center;
	mask-position: center;
}

.front-library__brand-text {
	display: flex;
	flex-direction: column;
	gap: 0.15rem;
	min-width: 0;
}

.front-library__eyebrow {
	margin: 0;
	font-size: 0.68rem;
	letter-spacing: 0.22em;
	text-transform: uppercase;
	color: rgba( 26, 43, 72, 0.55 );
}

.front-library__title {
	margin: 0;
	font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
	font-size: clamp( 1.4rem, 2.8vw, 1.95rem );
	font-weight: 700;
	letter-spacing: 0.1em;
	color: var( --lib-ink );
	line-height: 1.2;
}

.front-library__cta {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	flex-shrink: 0;
	padding: 0.7rem 1.2rem;
	border: 1px solid var( --lib-ink );
	color: #fff;
	text-decoration: none;
	font-size: 0.78rem;
	letter-spacing: 0.12em;
	background: var( --lib-ink );
	box-shadow: none;
	transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.front-library__cta:hover,
.front-library__cta:focus-visible {
	background: #243a5c;
	border-color: #243a5c;
	box-shadow: none;
	outline: none;
	transform: translateY( -1px );
}

.front-library__stage {
	flex: 1 1 auto;
	display: grid;
	grid-template-columns: minmax( 0, 0.92fr ) minmax( 0, 1.08fr );
	gap: clamp( 1.25rem, 3vw, 2.5rem );
	align-items: end;
	min-height: 0;
}

.front-library__hero {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 0.85rem;
	min-width: 0;
	text-decoration: none;
	color: inherit;
	transform: rotate( -1.5deg );
	transition: transform 0.35s ease;
}

.front-library__hero:hover,
.front-library__hero:focus-visible {
	transform: rotate( 0deg ) translateY( -4px );
	outline: none;
}

.front-library__hero-frame {
	display: block;
	width: min( 100%, 22rem );
	aspect-ratio: 210 / 297;
	background: transparent;
	border: 0;
	box-shadow: 12px 18px 40px rgba( 20, 30, 50, 0.18 );
	overflow: hidden;
}

.front-library__hero-img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
	background: transparent;
}

.front-library__hero-meta {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 0.35rem;
	max-width: 22rem;
	padding-inline: 0.15rem;
}

.front-library__hero-badge {
	display: inline-block;
	padding: 0.2rem 0.55rem;
	font-size: 0.72rem;
	letter-spacing: 0.14em;
	font-weight: 700;
	color: #fff;
	background: var( --lib-ink );
}

.front-library__hero-title {
	font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
	font-size: clamp( 1.05rem, 2vw, 1.35rem );
	font-weight: 700;
	letter-spacing: 0.04em;
	line-height: 1.35;
	color: var( --lib-ink );
}

.front-library__hero-sub {
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem 0.85rem;
	font-size: 0.78rem;
	letter-spacing: 0.06em;
	color: rgba( 26, 43, 72, 0.62 );
}

.front-library__rails {
	display: flex;
	flex-direction: column;
	justify-content: flex-end;
	gap: 0.85rem;
	min-width: 0;
	min-height: 0;
	padding-bottom: 0.25rem;
}

.front-library__rails-head {
	display: flex;
	justify-content: flex-end;
	align-items: center;
	position: relative;
	z-index: 1;
}

.front-library__marquee.front-section__sns-marquee {
	width: 100%;
	max-width: none;
	margin: 0;
	padding-block: 0;
	background: transparent;
	border: 0;
	box-shadow: none;
	mask-image: linear-gradient( 90deg, transparent, #000 6%, #000 94%, transparent );
	-webkit-mask-image: linear-gradient( 90deg, transparent, #000 6%, #000 94%, transparent );
}

.front-library__marquee .front-section__sns-gallery-row--vertical {
	gap: 0.85rem;
	padding-inline: 0.5rem;
}

.front-library__marquee .front-section__sns-gallery-item--vertical {
	width: clamp( 110px, 12vw, 148px );
}

.front-library__marquee .front-section__sns-gallery-card--vertical,
.front-library__marquee .front-section__sns-gallery-card--vertical .front-section__sns-gallery-thumb,
.front-library__marquee .front-section__sns-gallery-thumb--vertical {
	aspect-ratio: 210 / 297;
}

.front-library__marquee .front-library__rail-card,
.front-library__marquee .front-section__sns-gallery-card {
	border-radius: 0;
	border: 0;
	box-shadow: 4px 6px 14px rgba( 20, 30, 50, 0.1 );
	background: transparent;
	transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.front-library__marquee .front-section__sns-gallery-card:hover,
.front-library__marquee .front-section__sns-gallery-card:focus-visible {
	transform: translateY( -4px );
	box-shadow: 6px 12px 22px rgba( 20, 30, 50, 0.16 );
}

.front-library__marquee .front-section__sns-gallery-thumb {
	background: transparent;
	border-radius: 0;
}

.front-library__marquee .front-section__sns-gallery-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
}

@media ( max-width: 900px ) {
	.front-library__stage {
		grid-template-columns: 1fr;
		align-items: stretch;
		gap: 1.25rem;
	}

	.front-library__hero {
		align-items: center;
		text-align: center;
		transform: none;
	}

	.front-library__hero:hover,
	.front-library__hero:focus-visible {
		transform: translateY( -3px );
	}

	.front-library__hero-frame {
		width: min( 42vw, 14rem );
	}

	.front-library__hero-meta {
		align-items: center;
		max-width: 20rem;
	}

	.front-library__hero-sub {
		justify-content: center;
	}

	.front-library__marquee.front-section__sns-marquee {
		mask-image: linear-gradient( 90deg, transparent, #000 4%, #000 96%, transparent );
		-webkit-mask-image: linear-gradient( 90deg, transparent, #000 4%, #000 96%, transparent );
	}

	.front-library__marquee .front-section__sns-gallery-item--vertical {
		width: clamp( 92px, 20vw, 120px );
	}
}

@media ( max-width: 767px ) {
	/* SP: 水色固定・色遷移レイヤー無効・全幅 */
	.site-main--front .front-section--library {
		--lib-mix: 1;
		--used-mix: 0;
		--lib-color-scroll: 0;
		height: auto;
		min-height: 100vh;
		min-height: 100dvh;
		overflow-x: clip;
		background: var( --lib-to );
		border: 0;
		box-shadow: none;
	}

	.front-library__wash {
		background: var( --lib-to );
	}

	.front-library__wash::after,
	.front-library__wash-used {
		display: none !important;
		opacity: 0;
	}

	.front-library__ghost {
		left: 50%;
		top: 40%;
		width: 100vw;
		max-width: 100vw;
		font-size: calc( 100vw / 6.4 );
		letter-spacing: 0.02em;
		line-height: 1;
		text-align: center;
		transform: translate( -50%, -50% );
		opacity: 0.85;
	}

	.front-library__pin {
		position: relative;
		height: auto;
		min-height: 100vh;
		min-height: 100dvh;
		overflow: visible;
		background: transparent;
	}

	.front-library__inner {
		padding: calc( var( --header-height, 4rem ) + clamp( 1.5rem, 4vh, 2.25rem ) )
			clamp( 1.15rem, 4vw, 1.75rem )
			clamp( 1.5rem, 4vh, 2rem );
		gap: 1.1rem;
		align-items: center;
	}

	.front-library__header {
		flex-wrap: wrap;
		justify-content: center;
		width: 100%;
	}

	.front-library__brand {
		justify-content: center;
	}

	.front-library__brand-text {
		align-items: center;
		text-align: center;
	}

	.front-library__rails-head {
		justify-content: center;
	}

	.front-library__cta {
		width: auto;
		justify-content: center;
	}

	.front-library__marquee .front-section__sns-gallery-row--vertical {
		gap: 0.65rem;
	}

	.front-library__marquee.front-section__sns-marquee {
		mask-image: none;
		-webkit-mask-image: none;
	}

	.front-library__marquee .front-section__sns-gallery-card {
		box-shadow: none;
		transition: none;
	}
}

@media ( prefers-reduced-motion: reduce ) {
	.site-main--front .front-section--library {
		height: auto;
		min-height: 100vh;
		--lib-mix: 1;
	}

	.front-library__pin {
		position: relative;
		height: auto;
		min-height: 100vh;
	}

	.front-library__hero,
	.front-library__cta,
	.front-library__marquee .front-section__sns-gallery-card {
		transition: none;
	}
}