/* news-single.css
 * Variation B — Wide & structured layout for news/single.html
 * Extends themes/brain-regeneration/static/css/main.css
 */

/* ── Reading progress bar ─────────────────────────────────────── */
.progress {
	position: fixed;
	left: 0;
	right: 0;
	top: 56px; /* pinned under sticky nav */
	height: 3px;
	background: rgba(0, 0, 0, .04);
	z-index: 1029; /* just below the sticky nav */
}
.progress__bar {
	height: 100%;
	background: var(--color-accent);
	width: 0%;
	transition: width 100ms linear;
}
@media print { .progress { display: none; } }

/* ── Back link ───────────────────────────────────────────────── */
.back-link {
	font-family: var(--font-heading);
	font-size: 14px;
	color: var(--color-primary);
	text-decoration: none;
	display: inline-flex;
	align-items: center;
	gap: 6px;
}
.back-link:hover { color: var(--color-accent); text-decoration: none; }

/* ── Kicker / eyebrow ────────────────────────────────────────── */
.kicker {
	font-family: var(--font-heading);
	font-size: 12px;
	font-weight: 600;
	color: var(--color-primary);
	text-transform: uppercase;
	letter-spacing: .1em;
	margin-bottom: 14px;
}

/* ── Article shell ───────────────────────────────────────────── */
.b-shell {
	max-width: 1280px;
	margin: 0 auto;
	padding: 0 0 80px;
}

/* ── Header (title block) ────────────────────────────────────── */
.b-header {
	max-width: 880px;
	margin: 0 auto;
	padding: 48px 32px 0;
}
.b-header h1 {
	font-family: var(--font-heading);
	color: var(--color-primary);
	font-size: 44px;
	font-weight: 700;
	line-height: 1.12;
	margin: 18px 0 14px;
	letter-spacing: -.01em;
}
.b-deck {
	font-family: var(--font-body);
	font-size: 20px;
	line-height: 1.5;
	color: var(--color-text);
	max-width: 720px;
	margin: 0 0 30px;
}

/* ── Meta strip ──────────────────────────────────────────────── */
.meta-strip {
	display: flex;
	align-items: center;
	gap: 18px;
	font-family: var(--font-heading);
	font-size: 13px;
	color: var(--color-muted);
	padding: 14px 0;
	border-top: 1px solid var(--color-border);
	border-bottom: 1px solid var(--color-border);
	margin: 22px 0 40px;
	flex-wrap: wrap;
}
.meta-strip__sep {
	width: 3px;
	height: 3px;
	border-radius: 50%;
	background: var(--color-border);
}
.meta-strip__name { color: var(--color-text); font-weight: 600; }
.meta-strip__share { margin-left: auto; display: flex; gap: 6px; }
.share-btn {
	width: 30px;
	height: 30px;
	border-radius: 50%;
	border: 1px solid var(--color-border);
	background: transparent;
	color: var(--color-muted);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: all var(--dur-base) var(--ease);
	text-decoration: none;
}
.share-btn:hover {
	color: var(--color-primary);
	border-color: var(--color-primary);
	background: var(--color-tint);
	text-decoration: none;
}

/* ── Hero figure ─────────────────────────────────────────────── */
.b-hero {
	max-width: 1140px;
	margin: 0 auto 8px;
	padding: 0 32px;
}
.b-hero-wrap {
	border-radius: var(--radius);
	overflow: hidden;
	aspect-ratio: 21 / 9;
	position: relative;
}
.b-hero-wrap img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}
.b-hero-caption {
	max-width: 1140px;
	margin: 0 auto 48px;
	padding: 0 32px;
}

/* ── Body grid: article column + right rail ──────────────────── */
.b-body {
	max-width: 1140px;
	margin: 0 auto;
	padding: 0 32px;
	display: grid;
	grid-template-columns: 1fr 220px;
	gap: 80px;
	align-items: start;
}
.b-col {
	max-width: 720px;
	min-width: 0; /* prevent overflow in grid */
}

/* ── TOC (right rail) ────────────────────────────────────────── */
.b-toc {
	position: sticky;
	top: 88px; /* nav 56 + progress 3 + breathing 29 */
	padding-top: 6px;
}
.toc__label {
	color: var(--color-muted);
	text-transform: uppercase;
	letter-spacing: .1em;
	font-size: 11px;
	font-weight: 600;
	font-family: var(--font-heading);
	margin-bottom: 14px;
}
.toc__list {
	list-style: none;
	padding: 0;
	margin: 0;
	display: flex;
	flex-direction: column;
	gap: 1px;
}
.toc__item {
	position: relative;
	padding: 7px 0 7px 14px;
	border-left: 2px solid var(--color-border);
	color: var(--color-muted);
	cursor: pointer;
	line-height: 1.4;
	font-family: var(--font-heading);
	font-size: 13px;
	transition: color var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.toc__item:hover { color: var(--color-primary); }
.toc__item--active {
	color: var(--color-primary);
	border-left-color: var(--color-primary);
	font-weight: 500;
}
.toc__item a {
	color: inherit;
	text-decoration: none;
}

/* ── Article body typography ─────────────────────────────────── */
.b-col h2 {
	font-family: var(--font-heading);
	color: var(--color-primary);
	font-size: 26px;
	font-weight: 600;
	line-height: 1.2;
	margin: 56px 0 18px;
	scroll-margin-top: 88px;
}
.b-col p {
	font-family: var(--font-body);
	font-size: 17px;
	line-height: 1.7;
	margin: 0 0 1.1em;
	color: var(--color-text);
}
.b-col p.lead {
	font-size: 21px;
	line-height: 1.55;
	margin-bottom: 1.3em;
}
.b-col a {
	color: var(--color-primary);
	text-decoration: underline;
	text-underline-offset: 3px;
	text-decoration-thickness: 1px;
}
.b-col a:hover {
	color: var(--color-accent);
	text-decoration-thickness: 2px;
}
.b-col ul, .b-col ol {
	font-family: var(--font-body);
	font-size: 17px;
	line-height: 1.7;
	color: var(--color-text);
	padding-left: 22px;
	margin-bottom: 1.1em;
}

/* ── Figure / caption shared ─────────────────────────────────── */
figure { margin: 0; }
.caption {
	display: flex;
	gap: 16px;
	margin-top: 12px;
	padding: 12px;
	font-family: var(--font-heading);
	font-size: 13px;
	line-height: 1.5;
	color: var(--color-muted);
}
.caption__num {
	color: var(--color-primary);
	font-weight: 600;
	flex-shrink: 0;
	letter-spacing: .04em;
	text-transform: uppercase;
	font-size: 11px;
	padding-top: 2px;
}
.caption__body { flex: 1; }
.caption__text { color: var(--color-text); }
.caption__credit {
	color: var(--color-muted);
	font-size: 12px;
	margin-top: 2px;
}

/* ── Zoom hint overlay ───────────────────────────────────────── */
.zoomable { cursor: zoom-in; position: relative; }
.zoom-hint {
	position: absolute;
	top: 10px;
	right: 10px;
	background: rgba(255, 255, 255, .92);
	color: var(--color-primary);
	font-family: var(--font-heading);
	font-size: 11px;
	font-weight: 600;
	padding: 4px 8px;
	border-radius: var(--radius);
	display: flex;
	align-items: center;
	gap: 4px;
	opacity: 0;
	transition: opacity var(--dur-base) var(--ease);
	z-index: 3;
	pointer-events: none;
}
.zoomable:hover .zoom-hint { opacity: 1; }

/* ── Treatment: hero (container-wide, 21:9) ──────────────────── */
/* Handled by .b-hero / .b-hero-wrap above */

/* ── Treatment: inline (column-width, 16:10) ─────────────────── */
.fig-inline {
	margin: 36px 0 8px;
	border-radius: var(--radius);
	overflow: hidden;
	position: relative;
}
.fig-inline img {
	width: 100%;
	height: auto;
	display: block;
	aspect-ratio: 16 / 10;
	object-fit: cover;
}

/* ── Treatment: wide (breaks out of column) ─────────────────── */
.fig-wide {
	margin: 36px -120px 8px;
	position: relative;
	border-radius: var(--radius);
	overflow: hidden;
}
.fig-wide img {
	width: 100%;
	height: auto;
	display: block;
	aspect-ratio: 21 / 9;
	object-fit: cover;
}
.fig-wide .caption {
	padding: 0 120px;
}

/* ── Treatment: screenshot (tinted band) ─────────────────────── */
.fig-screenshot {
	background: var(--color-tint);
	border-radius: var(--radius);
	padding: 36px 36px 28px;
	margin: 36px 0 8px;
}
.fig-screenshot__label {
	font-family: var(--font-heading);
	font-size: 11px;
	text-transform: uppercase;
	letter-spacing: .1em;
	color: var(--color-primary);
	font-weight: 600;
	margin-bottom: 14px;
}
.fig-screenshot figure {
	border-radius: 6px;
	overflow: hidden;
	border: 1px solid var(--color-border);
	background: #fff;
	position: relative;
}
.fig-screenshot img {
	width: 100%;
	height: auto;
	display: block;
}

/* ── Two-up row ──────────────────────────────────────────────── */
.row-2 {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 18px;
	margin: 28px 0 8px;
}

/* ── Pull quote ──────────────────────────────────────────────── */
.pullquote {
	font-family: var(--font-body);
	font-style: italic;
	font-size: 22px;
	line-height: 1.4;
	color: var(--color-primary);
	border-left: 3px solid var(--color-accent);
	padding: 8px 0 8px 22px;
	margin: 32px 0;
}
.pullquote cite {
	display: block;
	font-style: normal;
	font-family: var(--font-heading);
	font-size: 13px;
	color: var(--color-muted);
	margin-top: 10px;
	text-transform: uppercase;
	letter-spacing: .06em;
	font-weight: 500;
}

/* ── Inline subscribe card ────────────────────────────────────── */
.inline-sub {
	background: var(--color-primary);
	color: #fff;
	border-radius: var(--radius);
	padding: 28px 32px;
	margin: 40px 0;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	flex-wrap: wrap;
}
.inline-sub h3 {
	color: #fff;
	margin: 0 0 4px;
	font-family: var(--font-heading);
	font-size: 18px;
	font-weight: 600;
}
.inline-sub p {
	color: rgba(255, 255, 255, .82);
	margin: 0;
	font-family: var(--font-body);
	font-size: 15px;
}
.inline-sub .btn-amber {
	background: var(--color-accent);
	color: #fff;
	border: 0;
	padding: 10px 18px;
	font-family: var(--font-heading);
	font-weight: 600;
	font-size: 14px;
	border-radius: var(--radius);
	white-space: nowrap;
	text-decoration: none;
	display: inline-block;
}
.inline-sub .btn-amber:hover {
	background: var(--color-accent-hover);
	text-decoration: none;
}

/* ── Tags ─────────────────────────────────────────────────────── */
.tag-row {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: 48px;
}
.tag {
	display: inline-block;
	background: var(--color-tint);
	color: var(--color-primary);
	font-family: var(--font-heading);
	font-size: 13px;
	font-weight: 500;
	padding: 5px 12px;
	border-radius: var(--radius-pill);
	text-decoration: none;
}
.tag:hover {
	background: var(--color-primary);
	color: #fff;
	text-decoration: none;
}

/* ── Lightbox ─────────────────────────────────────────────────── */
.lightbox {
	position: fixed;
	inset: 0;
	background: rgba(26, 45, 45, .92);
	z-index: 200;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 40px;
	cursor: zoom-out;
	opacity: 0;
	pointer-events: none;
	transition: opacity 220ms var(--ease);
}
.lightbox.open {
	opacity: 1;
	pointer-events: auto;
}
.lightbox__inner {
	max-width: 92%;
	max-height: 90vh;
	background: #fff;
	border-radius: var(--radius);
	box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
	overflow: hidden;
	cursor: default;
	display: flex;
	flex-direction: column;
}
.lightbox__inner img {
	max-width: 100%;
	max-height: 80vh;
	display: block;
	object-fit: contain;
}
.lightbox__caption {
	font-family: var(--font-heading);
	font-size: 13px;
	color: var(--color-muted);
	padding: 12px 16px;
	border-top: 1px solid var(--color-border);
}
.lightbox__close {
	position: fixed;
	top: 24px;
	right: 28px;
	background: rgba(255, 255, 255, .1);
	color: #fff;
	border: 1px solid rgba(255, 255, 255, .2);
	width: 40px;
	height: 40px;
	border-radius: 50%;
	cursor: pointer;
	font-size: 20px;
	display: flex;
	align-items: center;
	justify-content: center;
	line-height: 1;
}
.lightbox__close:hover {
	background: rgba(255, 255, 255, .2);
}

/* ── Responsive — collapse right rail below 960px ────────────── */
@media (max-width: 960px) {
	.b-body {
		grid-template-columns: 1fr;
		gap: 0;
	}
	.b-toc {
		position: static;
		margin-bottom: 32px;
	}
	.toc__list {
		flex-direction: row;
		flex-wrap: wrap;
		gap: 4px 0;
	}
	.toc__item {
		border-left: 0;
		border-bottom: 2px solid var(--color-border);
		padding: 6px 14px 6px 0;
	}
	.toc__item--active {
		border-bottom-color: var(--color-primary);
	}
	.b-header h1 { font-size: 32px; }
	.fig-wide { margin-left: -32px; margin-right: -32px; border-radius: 0; }
	.fig-wide .caption { padding: 0 32px; }
}

@media (max-width: 720px) {
	.b-header { padding: 32px 20px 0; }
	.b-hero { padding: 0 20px; }
	.b-hero-caption { padding: 0 20px; margin-bottom: 32px; }
	.b-body { padding: 0 20px; }
	.b-hero-wrap { aspect-ratio: 16 / 9; }
	.b-header h1 { font-size: 26px; }
	.b-deck { font-size: 17px; }
	.fig-wide { margin-left: -20px; margin-right: -20px; border-radius: 0; }
	.fig-wide .caption { padding: 0 20px; }
}

@media (prefers-reduced-motion: reduce) {
	.progress__bar { transition: none; }
}