/* ==========================================================================
   Research Lab — components.css
   Buttons / labels / headings / cards / CTA / reveal
   ========================================================================== */

/* Buttons ----------------------------------------------------------------- */

.button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 14px;
	min-height: 52px;
	padding: 14px 28px;
	border: 1px solid transparent;
	border-radius: var(--radius);
	font-size: 0.9375rem;
	font-weight: 700;
	line-height: 1.5;
	letter-spacing: 0.06em;
	text-align: left;
	text-decoration: none;
	transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.button .icon {
	width: 18px;
	height: 18px;
	transition: transform 0.3s var(--ease);
}

.button:hover .icon {
	transform: translateX(4px);
}

.button--primary {
	background: var(--color-primary);
	color: #fff;
}

.button--primary:hover {
	background: var(--color-primary-deep);
	color: #fff;
}

.button--primary .icon {
	color: var(--color-accent);
}

.button--outline {
	border-color: var(--color-primary);
	background: transparent;
	color: var(--color-primary);
}

.button--outline:hover {
	background: var(--color-primary);
	color: #fff;
}

.button--inverse {
	background: #fff;
	color: var(--color-primary);
}

.button--inverse:hover {
	background: var(--color-accent-soft);
	color: var(--color-primary);
}

.site-footer .button--inverse,
.site-footer .button--inverse:hover {
	color: var(--color-primary);
}

.button--small {
	min-height: 42px;
	padding: 8px 20px;
	font-family: var(--font-en);
	font-size: var(--fs-xsmall);
	letter-spacing: 0.14em;
}

.button--large {
	min-height: 64px;
	padding: 18px 32px;
	font-size: 1rem;
}

.button--block {
	width: 100%;
	justify-content: space-between;
}

/* Text link --------------------------------------------------------------- */

.text-link {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	padding-block: 8px;
	color: var(--color-primary);
	font-size: 0.9375rem;
	font-weight: 700;
	letter-spacing: 0.04em;
	text-decoration: none;
	background-image: linear-gradient(currentColor, currentColor);
	background-position: 0 calc(100% - 4px);
	background-repeat: no-repeat;
	background-size: 0 1px;
	transition: background-size 0.35s var(--ease), color 0.2s var(--ease);
}

.text-link:hover {
	background-size: calc(100% - 28px) 1px;
}

.text-link .icon {
	width: 18px;
	height: 18px;
	color: var(--color-accent);
	transition: transform 0.3s var(--ease);
}

.text-link:hover .icon {
	transform: translateX(4px);
}

.text-link--strong {
	padding: 12px 0;
	border-bottom: 1px solid var(--color-primary);
	background: none;
	gap: 24px;
}

.text-link--strong:hover {
	color: var(--color-accent-strong);
	border-bottom-color: var(--color-accent-strong);
}

.section--dark .text-link {
	color: #fff;
}

/* Section label / head ---------------------------------------------------- */

.section-label {
	display: flex;
	align-items: center;
	gap: 14px;
	margin-bottom: 24px;
	font-family: var(--font-en);
	font-size: var(--fs-xsmall);
	font-weight: 600;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--color-accent-strong);
}

.section-label__num {
	display: inline-flex;
	align-items: center;
	gap: 14px;
	color: var(--color-primary);
}

.section-label__num::after {
	content: "";
	width: 32px;
	height: 1px;
	background: currentColor;
	opacity: 0.4;
}

.section-label--inverse,
.section--dark .section-label {
	color: var(--color-accent);
}

.section-label--inverse .section-label__num,
.section--dark .section-label__num {
	color: #fff;
}

.section-title {
	font-size: var(--fs-h2);
	line-height: 1.5;
	letter-spacing: 0.03em;
}

.section-title--sm {
	font-size: clamp(1.5rem, 1.3rem + 0.9vw, 2rem);
}

.section-head {
	margin-bottom: clamp(48px, 6vw, 80px);
}

.section-head__lead {
	color: var(--color-text);
	font-size: var(--fs-body);
	line-height: 2;
}

.section-head__lead strong {
	white-space: nowrap;
	color: var(--color-primary);
	background: linear-gradient(transparent 62%, var(--color-accent-soft) 62%);
}

.section--dark .section-head__lead {
	color: var(--color-on-dark-muted);
}

.section-head--center {
	max-width: 820px;
	margin-inline: auto;
	text-align: center;
}

.section-head--center .section-label {
	justify-content: center;
}

.section-head--center .section-head__lead {
	margin-top: 28px;
}

.section-head--split {
	display: grid;
	grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
	align-items: end;
	gap: 32px clamp(40px, 6vw, 96px);
}

.section-head--row {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-end;
	justify-content: space-between;
	gap: 24px 48px;
}

.section-head__link {
	flex-shrink: 0;
}

/* Tags -------------------------------------------------------------------- */

.tag-list {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	list-style: none;
}

/* :not(body) — WordPress adds class "tag" to <body> on tag archives. */
.tag:not(body) {
	display: inline-flex;
	align-items: center;
	padding: 4px 12px;
	border: 1px solid var(--color-border-strong);
	border-radius: var(--radius);
	background: #fff;
	color: var(--color-text);
	font-size: var(--fs-xsmall);
	line-height: 1.6;
	letter-spacing: 0.02em;
	text-decoration: none;
}

a.tag:hover {
	border-color: var(--color-accent);
	color: var(--color-accent-strong);
}

.tag--accent {
	border-color: transparent;
	background: var(--color-accent-soft);
	color: var(--color-accent-strong);
	font-weight: 500;
}

/* Researcher card --------------------------------------------------------- */

.researcher-card {
	position: relative;
	display: flex;
	flex-direction: column;
	height: 100%;
	background: #fff;
	border: 1px solid var(--color-border);
	transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.researcher-card.has-link:hover {
	border-color: var(--color-border-strong);
	box-shadow: var(--shadow-soft);
}

.researcher-card__media {
	position: relative;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	background:
		radial-gradient(circle at 78% 30%, rgba(21, 166, 166, 0.12) 0 18%, transparent 18.5%),
		linear-gradient(135deg, #eef2f6, #f7f9fb);
	border-bottom: 1px solid var(--color-border);
}

.researcher-card__image {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s var(--ease);
}

.researcher-card.has-link:hover .researcher-card__image {
	transform: scale(1.03);
}

.researcher-card__monogram {
	position: absolute;
	inset: 0;
	display: grid;
	place-items: center;
	font-family: var(--font-en);
	font-size: clamp(2.5rem, 2rem + 2vw, 3.5rem);
	font-weight: 300;
	letter-spacing: 0.08em;
	color: var(--color-primary);
	opacity: 0.8;
}

.researcher-card__sample {
	position: absolute;
	top: 12px;
	left: 12px;
	padding: 2px 8px;
	background: rgba(255, 255, 255, 0.9);
	font-family: var(--font-en);
	font-size: 0.6875rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--color-muted);
}

.researcher-card__body {
	display: flex;
	flex-direction: column;
	flex: 1;
	padding: 28px 28px 32px;
}

.researcher-card__field {
	margin-bottom: 12px;
	color: var(--color-accent-strong);
	font-size: var(--fs-xsmall);
	font-weight: 700;
	letter-spacing: 0.06em;
}

.researcher-card__name {
	font-size: var(--fs-h3);
	line-height: 1.4;
	word-break: normal; /* names fill the line instead of phrase-breaking */
}

.researcher-card__name a {
	text-decoration: none;
}

.researcher-card__name a::after {
	content: "";
	position: absolute;
	inset: 0;
	z-index: 1;
}

.researcher-card__name a:focus-visible {
	outline: none;
}

.researcher-card:has(a:focus-visible) {
	outline: 2px solid var(--color-accent);
	outline-offset: 3px;
}

.researcher-card__en {
	margin-top: 4px;
	font-family: var(--font-en);
	font-size: var(--fs-xsmall);
	letter-spacing: 0.08em;
	color: var(--color-muted);
}

.researcher-card__affiliation {
	margin-top: 14px;
	padding-top: 14px;
	border-top: 1px solid var(--color-border);
	font-size: var(--fs-small);
	line-height: 1.7;
	color: var(--color-text);
}

.researcher-card__themes {
	margin-top: auto;
	padding-top: 20px;
}

.researcher-card__themes-label {
	margin-bottom: 8px;
	font-size: 0.75rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	color: var(--color-muted);
}

.researcher-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: clamp(20px, 2.4vw, 32px);
}

/* Post card --------------------------------------------------------------- */

.post-card {
	position: relative;
	display: flex;
	flex-direction: column;
	height: 100%;
}

/* 1280x670 banner ratio; images are contained (never cropped) because
   INSIGHTS eyecatches carry titles and diagrams. */
.post-card__media {
	position: relative;
	aspect-ratio: 1280 / 670;
	margin-bottom: 22px;
	overflow: hidden;
	background: var(--color-bg-media);
}

.post-card.has-image .post-card__media::after {
	content: "";
	position: absolute;
	inset: 0;
	border: 1px solid rgba(16, 42, 67, 0.06);
	pointer-events: none;
}

.post-card__image {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
	transition: opacity 0.4s var(--ease);
}

.post-card:hover .post-card__image {
	opacity: 0.88;
}

.post-card__media--typographic {
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	padding: clamp(24px, 3vw, 40px);
	background:
		linear-gradient(90deg, var(--color-border-dark) 1px, transparent 1px) 0 0 / 48px 48px,
		linear-gradient(0deg, var(--color-border-dark) 1px, transparent 1px) 0 0 / 48px 48px,
		var(--color-primary);
	color: #fff;
}

.post-card__media-label {
	font-family: var(--font-en);
	font-size: var(--fs-xsmall);
	letter-spacing: 0.2em;
	color: var(--color-accent);
}

.post-card__media-cat {
	font-family: var(--font-en);
	font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.5rem);
	font-weight: 300;
	line-height: 1.2;
	letter-spacing: 0.02em;
}

.post-card__meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 6px 16px;
	margin-bottom: 12px;
	font-size: var(--fs-xsmall);
	color: var(--color-muted);
}

.post-card__cat {
	color: var(--color-accent-strong);
	font-weight: 700;
	letter-spacing: 0.06em;
}

.post-card__date {
	font-family: var(--font-en);
	letter-spacing: 0.06em;
}

.post-card__cat--neutral {
	font-family: var(--font-en);
	font-weight: 600;
	letter-spacing: 0.14em;
	color: var(--color-text);
}

/* INSIGHTS empty state (TOP / listing) */

.insights-empty {
	padding: clamp(40px, 5vw, 64px) clamp(24px, 4vw, 56px);
	border-top: 1px solid var(--color-primary);
	border-bottom: 1px solid var(--color-border-strong);
	background: #fff;
}

.insights-empty__label {
	font-family: var(--font-en);
	font-size: var(--fs-xsmall);
	font-weight: 600;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--color-accent-strong);
}

.insights-empty__title {
	margin-top: 12px;
	font-size: var(--fs-h3);
	font-weight: 700;
	line-height: 1.5;
	color: var(--color-primary);
}

.insights-empty__text {
	margin-top: 8px;
	font-size: var(--fs-small);
	line-height: 1.9;
	color: var(--color-muted);
}

.post-card__title {
	font-size: 1.125rem;
	line-height: 1.65;
}

.post-card__title a {
	text-decoration: none;
	background-image: linear-gradient(currentColor, currentColor);
	background-position: 0 100%;
	background-repeat: no-repeat;
	background-size: 0 1px;
	transition: background-size 0.4s var(--ease);
}

.post-card__title a::after {
	content: "";
	position: absolute;
	inset: 0;
}

.post-card:hover .post-card__title a {
	background-size: 100% 1px;
}

.post-card__excerpt {
	margin-top: 12px;
	font-size: var(--fs-small);
	line-height: 1.9;
	color: var(--color-muted);
}

.post-card__more {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	margin-top: 24px;
	font-size: var(--fs-small);
	font-weight: 700;
	color: var(--color-primary);
}

.post-card__more .icon {
	width: 18px;
	color: var(--color-accent);
}

.post-card--featured .post-card__title {
	font-size: clamp(1.375rem, 1.2rem + 0.8vw, 1.75rem);
	line-height: 1.55;
}

.post-card--featured .post-card__excerpt {
	font-size: var(--fs-body);
}

/* Whole card is clickable through the title link; keep focus visible. */
.post-card__title a:focus-visible {
	outline: none;
}

.post-card:has(.post-card__title a:focus-visible) {
	outline: 2px solid var(--color-accent);
	outline-offset: 6px;
}

.post-card__body {
	display: flex;
	flex-direction: column;
	flex: 1;
}

.post-card--default .post-card__more {
	margin-top: auto;
	padding-top: 20px;
}

.post-card__more .icon {
	transition: transform 0.3s var(--ease);
}

.post-card:hover .post-card__more .icon {
	transform: translateX(4px);
}

.post-card--default .post-card__excerpt {
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.post-card--compact .post-card__excerpt {
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.post-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: clamp(40px, 5vw, 64px) clamp(24px, 3vw, 40px);
}

.post-grid > * {
	padding-top: 28px;
	border-top: 1px solid var(--color-border);
}

/* CTA section ------------------------------------------------------------- */

.cta-section {
	overflow: hidden;
	background: var(--color-bg-sub);
	border-top: 1px solid var(--color-border);
}

.cta-section__pattern {
	position: absolute;
	top: 0;
	right: 0;
	width: min(560px, 60vw);
	height: 100%;
	background:
		radial-gradient(circle, var(--color-border-strong) 1.2px, transparent 1.6px) 0 0 / 28px 28px;
	-webkit-mask-image: linear-gradient(90deg, transparent, #000 60%);
	mask-image: linear-gradient(90deg, transparent, #000 60%);
	opacity: 0.7;
	pointer-events: none;
}

.cta-section__inner {
	position: relative;
}

.cta-section__title {
	font-size: clamp(2rem, 1.5rem + 2.2vw, 3.25rem);
	line-height: 1.45;
	letter-spacing: 0.03em;
}

.cta-section__text {
	max-width: 640px;
	margin-top: 32px;
	font-size: var(--fs-lead);
	line-height: 2;
}

.cta-section__actions {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 20px 40px;
	margin-top: 48px;
}

.cta-section__points {
	display: flex;
	flex-wrap: wrap;
	gap: 12px 32px;
	margin-top: 40px;
	padding-top: 28px;
	border-top: 1px solid var(--color-border);
	list-style: none;
	font-size: var(--fs-small);
	color: var(--color-text);
}

.cta-section__points li {
	display: inline-flex;
	align-items: center;
	gap: 8px;
}

.cta-section__points .icon {
	color: var(--color-accent-strong);
	width: 18px;
}

/* Pagination -------------------------------------------------------------- */

.pagination {
	margin-top: clamp(56px, 7vw, 88px);
}

.pagination .nav-links {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 8px;
}

.pagination .page-numbers {
	display: inline-grid;
	place-items: center;
	min-width: 44px;
	height: 44px;
	padding: 0 12px;
	border: 1px solid var(--color-border);
	font-family: var(--font-en);
	font-size: var(--fs-small);
	text-decoration: none;
	color: var(--color-primary);
}

.pagination .page-numbers.current {
	background: var(--color-primary);
	border-color: var(--color-primary);
	color: #fff;
}

.pagination a.page-numbers:hover {
	border-color: var(--color-primary);
}

.pagination .dots {
	border-color: transparent;
}

/* Reveal animation (only when JS is available) ---------------------------- */

@media (prefers-reduced-motion: no-preference) {
	.js [data-reveal] {
		opacity: 0;
		transform: translateY(16px);
		transition:
			opacity 0.8s var(--ease) var(--reveal-delay, 0ms),
			transform 0.8s var(--ease) var(--reveal-delay, 0ms);
	}

	.js [data-reveal].is-visible {
		opacity: 1;
		transform: none;
	}
}