/* ==========================================================================
   Portfolio Theme — Design System
   写真主役のミニマルデザイン。白背景・広い余白・uppercase タイポグラフィ。
   ========================================================================== */

/* --------------------------------------------------------------------------
   Tokens
   -------------------------------------------------------------------------- */
:root {
	--color-bg: #ffffff;
	--color-text: #1a1a1a;
	--color-muted: #767676;
	--color-faint: #a5a5a5;
	--color-border: #d9d9d9;
	--color-border-dark: #1a1a1a;
	--font-sans: "Jost", -apple-system, BlinkMacSystemFont, "Helvetica Neue",
		"Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
	--font-logo: "Josefin Sans", "Jost", -apple-system, BlinkMacSystemFont,
		sans-serif;
	--tracking-wide: 0.14em;
	--tracking-nav: 0.1em;
	--tracking-logo: 0.08em;
	--content-narrow: 640px;
	--content-project: 760px;
	--content-wide: 1200px;
	--grid-gap: 6px;
	--header-h: 88px;
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background: var(--color-bg);
	color: var(--color-text);
	font-family: var(--font-sans);
	font-weight: 300;
	font-size: 16px;
	line-height: 1.85;
	-webkit-font-smoothing: antialiased;
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

a {
	color: inherit;
	text-decoration: none;
	transition: color 0.25s ease, opacity 0.25s ease;
}

.screen-reader-text {
	position: absolute !important;
	width: 1px;
	height: 1px;
	margin: -1px;
	padding: 0;
	overflow: hidden;
	clip: rect(0 0 0 0);
	white-space: nowrap;
	border: 0;
}

.skip-link:focus {
	position: fixed !important;
	top: 12px;
	left: 12px;
	z-index: 1000;
	width: auto;
	height: auto;
	margin: 0;
	padding: 10px 18px;
	overflow: visible;
	clip: auto;
	background: var(--color-text);
	color: var(--color-bg);
	font-size: 14px;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
	position: relative;
	background: var(--color-bg);
}

.site-header__inner {
	max-width: var(--content-wide);
	margin: 0 auto;
	padding: 0 32px;
	min-height: var(--header-h);
	display: flex;
	align-items: center;
	gap: 28px;
}

.site-branding {
	margin-right: auto;
}

.site-logo-wrap {
	margin: 0;
	font-size: inherit;
	line-height: inherit;
}

.site-logo {
	font-family: var(--font-logo);
	font-size: 30px;
	font-weight: 500;
	letter-spacing: var(--tracking-logo);
	text-transform: lowercase;
	color: var(--color-text);
}

.custom-logo {
	max-height: 44px;
	width: auto;
}

/* Navigation */
.site-nav {
	display: flex;
	align-items: center;
	gap: 28px;
}

.site-nav__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	align-items: center;
	gap: 26px;
}

.site-nav__list a {
	font-size: 11px;
	font-weight: 500;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
	color: var(--color-muted);
	padding: 6px 0;
}

.site-nav__list a:hover {
	color: var(--color-text);
}

.site-nav__list .current-menu-item > a,
.site-nav__list .current-menu-ancestor > a,
.site-nav__list .current_page_item > a,
.site-nav__list .current_page_parent > a {
	color: var(--color-text);
	font-weight: 600;
}

/* Header socials */
.site-header__social {
	display: flex;
	align-items: center;
	gap: 16px;
}

.social-link {
	display: inline-flex;
	align-items: center;
	color: var(--color-faint);
}

.social-link:hover {
	color: var(--color-text);
}

.social-link svg {
	width: 15px;
	height: 15px;
}

/* Hamburger (hidden on desktop) */
.nav-toggle {
	display: none;
	appearance: none;
	background: none;
	border: 0;
	padding: 10px;
	margin: 0;
	cursor: pointer;
}

.nav-toggle__bar {
	display: block;
	width: 22px;
	height: 1.5px;
	background: var(--color-text);
	margin: 5px 0;
	transition: transform 0.25s ease, opacity 0.25s ease;
}

/* --------------------------------------------------------------------------
   Main layout
   -------------------------------------------------------------------------- */
.site-main {
	min-height: 55vh;
	padding: 8px 0 40px;
}

/* --------------------------------------------------------------------------
   Work grid (Home / Projects archive / Related)
   -------------------------------------------------------------------------- */
.work-grid {
	max-width: var(--content-wide);
	margin: 0 auto;
	padding: 0 32px;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: var(--grid-gap);
}

.work-grid__item {
	position: relative;
	display: block;
	aspect-ratio: 1 / 1;
	overflow: hidden;
	background: #f2f2f2;
}

.work-grid__image {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s ease;
}

.work-grid__placeholder {
	display: block;
	width: 100%;
	height: 100%;
	background: #ececec;
}

.work-grid__overlay {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 16px;
	background: rgba(255, 255, 255, 0.88);
	opacity: 0;
	transition: opacity 0.35s ease;
}

.work-grid__caption {
	font-size: 12px;
	font-weight: 500;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
	text-align: center;
	color: var(--color-text);
}

.work-grid__item:hover .work-grid__overlay,
.work-grid__item:focus-visible .work-grid__overlay {
	opacity: 1;
}

.work-grid__item:hover .work-grid__image {
	transform: scale(1.03);
}

.work-grid__empty {
	grid-column: 1 / -1;
	max-width: var(--content-narrow);
	margin: 80px auto;
	padding: 0 24px;
	text-align: center;
	color: var(--color-muted);
	letter-spacing: 0.05em;
}

/* Related variant: 3 columns */
.work-grid--related {
	grid-template-columns: repeat(3, 1fr);
	padding: 0;
}

/* --------------------------------------------------------------------------
   Page titles
   -------------------------------------------------------------------------- */
.page-title {
	max-width: var(--content-project);
	margin: 16px auto 40px;
	padding: 0 24px;
	font-size: 30px;
	font-weight: 500;
	letter-spacing: var(--tracking-wide);
	text-transform: uppercase;
	text-align: center;
	line-height: 1.4;
}

.page-title--archive {
	margin-bottom: 48px;
}

.archive-intro {
	max-width: var(--content-project);
	margin: -24px auto 48px;
	padding: 0 24px;
	font-size: 14px;
	font-weight: 300;
	letter-spacing: 0.04em;
	text-align: center;
	line-height: 1.9;
	color: var(--color-text-muted, inherit);
}

/* --------------------------------------------------------------------------
   Project single
   -------------------------------------------------------------------------- */
.project {
	max-width: var(--content-project);
	margin: 0 auto;
	padding: 0 24px;
}

.project__title {
	margin: 16px 0 36px;
	font-size: 30px;
	font-weight: 500;
	letter-spacing: var(--tracking-wide);
	text-transform: uppercase;
	line-height: 1.4;
}

.project__content {
	font-size: 15px;
	color: #3c3c3c;
}

/* Editor content: generous spacing around images/galleries */
.project__content p,
.page-content__body p {
	margin: 0 0 1.6em;
}

.project__content figure,
.project__content .wp-block-image,
.project__content .wp-block-gallery {
	margin: 40px 0;
}

.project__content .wp-block-gallery {
	--wp--style--gallery-gap-default: 24px;
	gap: 24px;
}

/* HTMLのwidth/height属性(size-medium等)に関わらず、常にコンテナ幅いっぱいに表示する */
.project__content .wp-block-image img,
.project__content > figure > img {
	width: 100%;
	height: auto;
}

.project__content figcaption {
	font-size: 12px;
	color: var(--color-faint);
	letter-spacing: 0.05em;
	text-align: center;
	margin-top: 10px;
}

/* Related projects */
.related-projects {
	max-width: var(--content-project);
	margin: 90px auto 0;
	padding: 0 24px;
}

.related-projects__title {
	font-size: 13px;
	font-weight: 600;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
	text-align: center;
	margin: 0 0 20px;
}

/* --------------------------------------------------------------------------
   Static pages (About / Exhibitions / Publications / Contact)
   -------------------------------------------------------------------------- */
.page-content {
	max-width: var(--content-narrow);
	margin: 0 auto;
	padding: 0 24px;
}

.page-content .page-title {
	padding: 0;
}

.page-content__body {
	font-size: 15px;
	color: #3c3c3c;
}

.page-content__body h2 {
	font-size: 15px;
	font-weight: 600;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
	margin: 3em 0 1em;
}

.page-content__body h3 {
	font-size: 14px;
	font-weight: 600;
	letter-spacing: 0.06em;
	margin: 2.4em 0 0.8em;
}

.page-content__body ul,
.page-content__body ol {
	padding-left: 1.2em;
	margin: 0 0 1.6em;
}

.page-content__body li {
	margin-bottom: 0.5em;
}

.page-content__body a {
	text-decoration: underline;
	text-underline-offset: 3px;
	color: var(--color-text);
}

.page-content__body a:hover {
	color: var(--color-muted);
}

.page-content__body figure,
.page-content__body .wp-block-image {
	margin: 36px 0;
}

.page-content__body blockquote {
	margin: 2em 0;
	padding-left: 1.4em;
	border-left: 1px solid var(--color-border);
	color: var(--color-muted);
	font-style: italic;
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */
.page-content--contact {
	text-align: center;
}

.page-content--contact .page-content__body {
	letter-spacing: 0.04em;
}

.contact-form {
	max-width: 420px;
	margin: 48px auto 0;
	text-align: left;
}

.contact-form__field {
	margin: 0 0 22px;
}

.contact-form__label {
	display: block;
	font-size: 11px;
	font-weight: 600;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
	margin-bottom: 8px;
}

.contact-form__input,
.contact-form__textarea {
	display: block;
	width: 100%;
	padding: 10px 12px;
	font-family: inherit;
	font-size: 14px;
	font-weight: 300;
	color: var(--color-text);
	background: var(--color-bg);
	border: 1px solid var(--color-border);
	border-radius: 2px;
	outline: none;
	transition: border-color 0.25s ease;
}

.contact-form__input::placeholder,
.contact-form__textarea::placeholder {
	color: var(--color-faint);
}

.contact-form__input:focus,
.contact-form__textarea:focus {
	border-color: var(--color-border-dark);
}

.contact-form__textarea {
	resize: vertical;
	min-height: 160px;
}

.contact-form__submit {
	appearance: none;
	background: var(--color-bg);
	border: 1px solid var(--color-border-dark);
	border-radius: 2px;
	padding: 9px 28px;
	font-family: inherit;
	font-size: 12px;
	font-weight: 600;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
	color: var(--color-text);
	cursor: pointer;
	transition: background 0.25s ease, color 0.25s ease;
}

.contact-form__submit:hover {
	background: var(--color-text);
	color: var(--color-bg);
}

.contact-form__notice {
	max-width: 420px;
	margin: 0 auto 28px;
	padding: 12px 16px;
	font-size: 13px;
	letter-spacing: 0.05em;
	text-align: center;
	border: 1px solid var(--color-border);
}

.contact-form__notice--sent {
	border-color: #9dbb9d;
	color: #3d6b3d;
}

.contact-form__notice--error {
	border-color: #c9a0a0;
	color: #8c3b3b;
}

/* Honeypot: 視覚的に完全に隠す */
.contact-form__hp {
	position: absolute !important;
	left: -9999px;
	width: 1px;
	height: 1px;
	overflow: hidden;
}

/* --------------------------------------------------------------------------
   Blog fallback list / Search
   -------------------------------------------------------------------------- */
.post-list {
	max-width: var(--content-narrow);
	margin: 0 auto;
	padding: 0 24px;
}

.post-item {
	padding: 28px 0;
	border-bottom: 1px solid #eee;
}

.post-item__title {
	font-size: 17px;
	font-weight: 500;
	letter-spacing: 0.05em;
	margin: 0 0 6px;
}

.post-item__excerpt {
	font-size: 14px;
	color: var(--color-muted);
}

.pagination,
.no-posts {
	max-width: var(--content-narrow);
	margin: 40px auto 0;
	padding: 0 24px;
	text-align: center;
	font-size: 13px;
	letter-spacing: 0.08em;
}

.pagination .page-numbers {
	display: inline-block;
	padding: 4px 10px;
	color: var(--color-muted);
}

.pagination .page-numbers.current {
	color: var(--color-text);
	font-weight: 600;
}

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */
.error-404 {
	max-width: var(--content-narrow);
	margin: 0 auto;
	padding: 60px 24px;
	text-align: center;
}

.error-404__title {
	font-size: 72px;
	font-weight: 300;
	letter-spacing: 0.1em;
	margin: 0 0 8px;
}

.button-link {
	display: inline-block;
	margin-top: 24px;
	padding: 9px 28px;
	border: 1px solid var(--color-border-dark);
	border-radius: 2px;
	font-size: 12px;
	font-weight: 600;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
}

.button-link:hover {
	background: var(--color-text);
	color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
	padding: 54px 24px 56px;
	text-align: center;
}

.back-to-top {
	display: inline-block;
	font-size: 11px;
	font-weight: 500;
	letter-spacing: var(--tracking-nav);
	text-transform: uppercase;
	color: var(--color-faint);
	margin-bottom: 44px;
}

.back-to-top:hover {
	color: var(--color-text);
}

.site-footer__social {
	display: flex;
	justify-content: center;
	gap: 20px;
	margin-bottom: 24px;
}

.site-footer__social .social-link svg {
	width: 16px;
	height: 16px;
}

.site-footer__copyright {
	margin: 0;
	font-size: 11px;
	letter-spacing: 0.08em;
	color: var(--color-faint);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
	.work-grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

@media (max-width: 820px) {
	.site-header__inner {
		padding: 0 20px;
		min-height: 68px;
	}

	.site-logo {
		font-size: 24px;
	}

	/* Hide desktop nav & header socials, show hamburger */
	.nav-toggle {
		display: block;
		order: 3;
	}

	.site-header__social {
		display: none;
	}

	.site-nav {
		position: absolute;
		top: 100%;
		left: 0;
		right: 0;
		z-index: 50;
		background: var(--color-bg);
		border-bottom: 1px solid #eee;
		display: none;
	}

	.site-header.is-open .site-nav {
		display: block;
	}

	.site-nav__list {
		flex-direction: column;
		align-items: center;
		gap: 0;
		padding: 12px 0 20px;
	}

	.site-nav__list a {
		display: block;
		padding: 11px 20px;
		font-size: 12px;
	}

	/* Hamburger → X */
	.site-header.is-open .nav-toggle__bar:nth-child(1) {
		transform: translateY(6.5px) rotate(45deg);
	}

	.site-header.is-open .nav-toggle__bar:nth-child(2) {
		opacity: 0;
	}

	.site-header.is-open .nav-toggle__bar:nth-child(3) {
		transform: translateY(-6.5px) rotate(-45deg);
	}

	.work-grid {
		padding: 0 20px;
	}

	.page-title,
	.project__title {
		font-size: 24px;
	}
}

@media (max-width: 640px) {
	.work-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.work-grid--related {
		grid-template-columns: repeat(3, 1fr);
	}

	.site-main {
		padding-bottom: 32px;
	}
}

/* --------------------------------------------------------------------------
   Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	*,
	*::before,
	*::after {
		transition-duration: 0.01ms !important;
	}
}