/**
 * SignalMind — Article and editorial blocks
 *
 * Two layers: the reading furniture around an article (progress bar, contents
 * list, quick answer, takeaways, byline, sources, cluster navigation) and the
 * editorial blocks that appear inside the prose.
 *
 * Loaded on hub content only.
 *
 * @package SignalMind
 */

/* ==========================================================================
   Reading progress
   ========================================================================== */

.sm-progress {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: var(--sm-z-header);
	height: 3px;
	background-color: transparent;
	pointer-events: none;
}

.admin-bar .sm-progress {
	top: 32px;
}

.sm-progress::after {
	content: "";
	display: block;
	height: 100%;
	width: var(--sm-progress, 0%);
	background-image: var(--sm-gradient-brand);
	box-shadow: 0 0 12px -2px var(--sm-alpha-primary-40);
	transition: width 90ms linear;
}

/* ==========================================================================
   Article layout
   ========================================================================== */

.sm-article {
	display: grid;
	gap: var(--sm-grid-gap-lg);
	grid-template-columns: minmax(0, 1fr);
	align-items: start;
}

@media (min-width: 1100px) {
	/* Contents rail beside the prose, not above it: a long list pushed above
	   the first paragraph delays the answer the reader came for. */
	.sm-article--railed {
		grid-template-columns: minmax(0, 1fr) 17rem;
		gap: var(--sm-space-12);
	}

	.sm-article__rail {
		position: sticky;
		top: calc(var(--sm-header-height) + var(--sm-space-6));
		max-height: calc(100vh - var(--sm-header-height) - var(--sm-space-12));
		overflow-y: auto;
		overscroll-behavior: contain;
	}
}

.sm-article__body {
	min-width: 0;
}

/* ==========================================================================
   Header furniture
   ========================================================================== */

.sm-article__eyebrow {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--sm-space-2) var(--sm-space-3);
	margin-bottom: var(--sm-space-4);
}

.sm-article__type {
	display: inline-flex;
	padding: var(--sm-space-1) var(--sm-space-2-5);
	border-radius: var(--sm-radius-sm);
	background-color: var(--sm-color-primary-subtle);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-bold);
	letter-spacing: var(--sm-tracking-wider);
	text-transform: uppercase;
	color: var(--sm-color-primary);
}

.sm-article__meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--sm-space-2) var(--sm-space-4);
	font-size: var(--sm-text-xs);
	color: var(--sm-color-text-subtle);
}

.sm-article__meta-item {
	display: inline-flex;
	align-items: center;
	gap: var(--sm-space-1-5);
}

/* Quick answer — the block a snippet or an AI overview lifts. */
.sm-quick {
	position: relative;
	margin-block: var(--sm-space-8);
	padding: var(--sm-space-6);
	border-radius: var(--sm-radius-xl);
	border: var(--sm-border-width) solid var(--sm-color-border-brand);
	background-image: var(--sm-gradient-brand-soft);
}

.sm-quick__label {
	display: inline-flex;
	align-items: center;
	gap: var(--sm-space-2);
	margin-bottom: var(--sm-space-3);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-bold);
	letter-spacing: var(--sm-tracking-widest);
	text-transform: uppercase;
	color: var(--sm-color-primary);
}

.sm-quick__text {
	font-size: var(--sm-text-md);
	line-height: var(--sm-leading-relaxed);
	color: var(--sm-color-text);
}

/* ==========================================================================
   Table of contents
   ========================================================================== */

.sm-toc {
	padding: var(--sm-space-5);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-xl);
	background-color: var(--sm-color-surface);
}

.sm-toc__title {
	margin-bottom: var(--sm-space-3);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-semibold);
	letter-spacing: var(--sm-tracking-widest);
	text-transform: uppercase;
	color: var(--sm-color-text-subtle);
}

.sm-toc__list {
	display: flex;
	flex-direction: column;
	gap: var(--sm-space-1);
	margin: 0;
	padding: 0;
	list-style: none;
	counter-reset: none;
}

.sm-toc__item + .sm-toc__item {
	margin-top: 0;
}

.sm-toc__item--h3 {
	padding-left: var(--sm-space-4);
}

.sm-toc__link {
	display: block;
	padding: var(--sm-space-1-5) var(--sm-space-2);
	border-left: 2px solid transparent;
	border-radius: 0 var(--sm-radius-sm) var(--sm-radius-sm) 0;
	font-size: var(--sm-text-sm);
	line-height: var(--sm-leading-snug);
	color: var(--sm-color-text-muted);
	transition: var(--sm-transition-colors);
}

.sm-toc__link:hover {
	background-color: var(--sm-color-surface-hover);
	color: var(--sm-color-text);
}

.sm-toc__link.is-current {
	border-left-color: var(--sm-color-primary);
	background-color: var(--sm-color-primary-subtle);
	color: var(--sm-color-primary);
}

/* ==========================================================================
   Editorial blocks
   ========================================================================== */

.sm-block {
	margin-block: var(--sm-space-8);
	padding: var(--sm-space-5) var(--sm-space-6);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-left-width: 3px;
	border-radius: var(--sm-radius-lg);
	background-color: var(--sm-color-surface);
}

.sm-block__label {
	display: inline-flex;
	align-items: center;
	gap: var(--sm-space-2);
	margin-bottom: var(--sm-space-2-5);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-bold);
	letter-spacing: var(--sm-tracking-widest);
	text-transform: uppercase;
}

.sm-block__term {
	margin-bottom: var(--sm-space-2);
	font-size: var(--sm-text-h4);
	font-weight: var(--sm-weight-bold);
	color: var(--sm-color-text);
}

.sm-block__body {
	font-size: var(--sm-text-base);
	line-height: var(--sm-leading-relaxed);
	color: var(--sm-color-text-secondary);
}

.sm-block__body > * + * {
	margin-top: var(--sm-space-3);
}

.sm-block__body :where(ul, ol) {
	padding-left: var(--sm-space-5);
}

.sm-block--def {
	border-left-color: var(--sm-color-primary);
}

.sm-block--def .sm-block__label {
	color: var(--sm-color-primary);
}

.sm-block--note {
	border-left-color: var(--sm-color-info);
	background-color: var(--sm-color-info-surface);
}

.sm-block--note .sm-block__label {
	color: var(--sm-color-info);
}

.sm-block--warning {
	border-left-color: var(--sm-color-warning);
	background-color: var(--sm-color-warning-surface);
}

.sm-block--warning .sm-block__label {
	color: var(--sm-color-warning);
}

.sm-block--expert {
	border-left-color: var(--sm-color-accent);
	background-image: var(--sm-gradient-brand-soft);
}

.sm-block--expert .sm-block__label {
	color: var(--sm-color-accent);
}

.sm-block--summary {
	border-left-color: var(--sm-color-primary);
	background-color: var(--sm-color-surface-raised);
}

.sm-block--summary .sm-block__label {
	color: var(--sm-color-primary);
}

.sm-block__by {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: var(--sm-space-2);
	margin-top: var(--sm-space-4);
	padding-top: var(--sm-space-3);
	border-top: var(--sm-border-width) solid var(--sm-color-divider);
	font-size: var(--sm-text-xs);
	color: var(--sm-color-text-subtle);
}

.sm-block__by strong {
	color: var(--sm-color-text);
}

/* ==========================================================================
   Statistics
   ========================================================================== */

.sm-stats {
	display: grid;
	gap: var(--sm-space-3);
	grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
	margin-block: var(--sm-space-8);
}

.sm-stat {
	display: flex;
	flex-direction: column;
	gap: var(--sm-space-1);
	padding: var(--sm-space-5);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-lg);
	background-color: var(--sm-color-surface);
}

.sm-stat__value {
	font-size: var(--sm-text-h2);
	font-weight: var(--sm-weight-extrabold);
	line-height: 1.1;
	letter-spacing: var(--sm-tracking-tighter);
	font-variant-numeric: tabular-nums;
	color: var(--sm-color-primary);
}

.sm-stat__label {
	font-size: var(--sm-text-sm);
	color: var(--sm-color-text-secondary);
}

.sm-stat__source {
	font-size: var(--sm-text-2xs);
	color: var(--sm-color-text-subtle);
}

/* ==========================================================================
   Pros and cons
   ========================================================================== */

.sm-proscons {
	display: grid;
	gap: var(--sm-space-4);
	grid-template-columns: minmax(0, 1fr);
	margin-block: var(--sm-space-8);
}

@media (min-width: 640px) {
	.sm-proscons {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

.sm-verdict {
	padding: var(--sm-space-5);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-lg);
	background-color: var(--sm-color-surface);
}

.sm-verdict__title {
	display: flex;
	align-items: center;
	gap: var(--sm-space-2);
	margin-bottom: var(--sm-space-3);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-bold);
	letter-spacing: var(--sm-tracking-widest);
	text-transform: uppercase;
}

.sm-verdict--pros { border-top: 2px solid var(--sm-color-bull); }
.sm-verdict--pros .sm-verdict__title { color: var(--sm-color-bull); }
.sm-verdict--cons { border-top: 2px solid var(--sm-color-bear); }
.sm-verdict--cons .sm-verdict__title { color: var(--sm-color-bear); }

.sm-verdict__body {
	font-size: var(--sm-text-sm);
	color: var(--sm-color-text-secondary);
}

.sm-verdict__body ul {
	margin: 0;
	padding-left: var(--sm-space-5);
}

/* ==========================================================================
   Table, checklist, steps, timeline
   ========================================================================== */

.sm-table {
	margin-block: var(--sm-space-8);
}

.sm-table__caption {
	margin-bottom: var(--sm-space-3);
	font-size: var(--sm-text-sm);
	font-weight: var(--sm-weight-semibold);
	color: var(--sm-color-text-secondary);
}

.sm-checklist {
	margin-block: var(--sm-space-8);
	padding: var(--sm-space-5);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-lg);
	background-color: var(--sm-color-surface);
}

.sm-checklist__title {
	margin-bottom: var(--sm-space-3);
	font-size: var(--sm-text-h5);
	font-weight: var(--sm-weight-semibold);
	color: var(--sm-color-text);
}

.sm-checklist ul {
	margin: 0;
	padding: 0;
	list-style: none;
}

.sm-checklist li {
	position: relative;
	padding-left: var(--sm-space-7);
	font-size: var(--sm-text-sm);
	color: var(--sm-color-text-secondary);
}

.sm-checklist li + li {
	margin-top: var(--sm-space-2-5);
}

.sm-checklist li::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0.35em;
	width: 16px;
	height: 16px;
	border-radius: var(--sm-radius-xs);
	border: var(--sm-border-width) solid var(--sm-color-border-brand);
	background-color: var(--sm-color-primary-subtle);
}

.sm-checklist li::after {
	content: "";
	position: absolute;
	left: 5px;
	top: 0.55em;
	width: 4px;
	height: 8px;
	border: solid var(--sm-color-primary);
	border-width: 0 2px 2px 0;
	transform: rotate(45deg);
}

.sm-steps,
.sm-timeline {
	position: relative;
	margin-block: var(--sm-space-8);
	padding: 0 0 0 var(--sm-space-8);
	list-style: none;
	counter-reset: sm-step;
}

.sm-steps::before,
.sm-timeline::before {
	content: "";
	position: absolute;
	left: 11px;
	top: 6px;
	bottom: 6px;
	width: 2px;
	background-image: linear-gradient(180deg, var(--sm-alpha-primary-40), var(--sm-alpha-accent-24), transparent);
}

.sm-step,
.sm-timeline__item {
	position: relative;
	margin-top: 0;
}

.sm-step + .sm-step,
.sm-timeline__item + .sm-timeline__item {
	margin-top: var(--sm-space-6);
}

.sm-step::before {
	counter-increment: sm-step;
	content: counter(sm-step);
	position: absolute;
	left: calc(-1 * var(--sm-space-8));
	top: 0;
	display: grid;
	place-items: center;
	width: 24px;
	height: 24px;
	border-radius: var(--sm-radius-circle);
	border: var(--sm-border-width) solid var(--sm-color-border-brand);
	background-color: var(--sm-color-bg);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-bold);
	color: var(--sm-color-primary);
}

.sm-timeline__item::before {
	content: "";
	position: absolute;
	left: calc(-1 * var(--sm-space-8) + 6px);
	top: 6px;
	width: 12px;
	height: 12px;
	border-radius: var(--sm-radius-circle);
	border: 2px solid var(--sm-color-primary);
	background-color: var(--sm-color-bg);
}

.sm-step__title,
.sm-timeline__title {
	font-size: var(--sm-text-h5);
	font-weight: var(--sm-weight-semibold);
	color: var(--sm-color-text);
}

.sm-timeline__date {
	display: block;
	margin-bottom: var(--sm-space-1);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-bold);
	letter-spacing: var(--sm-tracking-wider);
	text-transform: uppercase;
	color: var(--sm-color-primary);
}

.sm-step__body,
.sm-timeline__body {
	margin-top: var(--sm-space-2);
	font-size: var(--sm-text-sm);
	line-height: var(--sm-leading-relaxed);
	color: var(--sm-color-text-muted);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.sm-article-faq {
	margin-block: var(--sm-space-12);
}

.sm-article-faq__title {
	margin-bottom: var(--sm-space-5);
	font-size: var(--sm-text-h2);
}

.sm-article-faq__list {
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-xl);
	background-color: var(--sm-color-surface);
	overflow: hidden;
}

.sm-qa + .sm-qa {
	border-top: var(--sm-border-width) solid var(--sm-color-divider);
}

.sm-qa__q {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--sm-space-4);
	padding: var(--sm-space-5) var(--sm-space-6);
	cursor: pointer;
	list-style: none;
	transition: var(--sm-transition-colors);
}

/* The default disclosure triangle is replaced by the theme's chevron. */
.sm-qa__q::-webkit-details-marker {
	display: none;
}

.sm-qa__q:hover {
	background-color: var(--sm-color-surface-hover);
}

.sm-qa__q h3 {
	font-size: var(--sm-text-md);
	font-weight: var(--sm-weight-semibold);
	color: var(--sm-color-text);
}

.sm-qa__chevron {
	flex: none;
	color: var(--sm-color-text-subtle);
	transition: transform var(--sm-duration-base) var(--sm-ease-out);
}

.sm-qa[open] .sm-qa__chevron {
	transform: rotate(180deg);
	color: var(--sm-color-primary);
}

.sm-qa__a {
	padding: 0 var(--sm-space-6) var(--sm-space-5);
	font-size: var(--sm-text-sm);
	line-height: var(--sm-leading-relaxed);
	color: var(--sm-color-text-muted);
}

.sm-qa__a > * + * {
	margin-top: var(--sm-space-3);
}

/* ==========================================================================
   Byline, review status and sources
   ========================================================================== */

.sm-byline {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--sm-space-4);
	padding: var(--sm-space-4) 0;
	border-block: var(--sm-border-width) solid var(--sm-color-divider);
}

.sm-byline__avatar {
	width: 40px;
	height: 40px;
	border-radius: var(--sm-radius-circle);
	border: var(--sm-border-width) solid var(--sm-color-border);
}

.sm-byline__who {
	display: flex;
	flex-direction: column;
	gap: 2px;
	min-width: 0;
}

.sm-byline__name {
	font-size: var(--sm-text-sm);
	font-weight: var(--sm-weight-semibold);
	color: var(--sm-color-text);
}

.sm-byline__role,
.sm-byline__review {
	font-size: var(--sm-text-xs);
	color: var(--sm-color-text-subtle);
}

.sm-byline__review {
	display: inline-flex;
	align-items: center;
	gap: var(--sm-space-1-5);
	margin-left: auto;
	padding: var(--sm-space-1-5) var(--sm-space-3);
	border-radius: var(--sm-radius-pill);
	background-color: var(--sm-color-success-surface);
	color: var(--sm-color-success);
	font-weight: var(--sm-weight-medium);
}

/* Author box */

.sm-author {
	display: grid;
	gap: var(--sm-space-5);
	grid-template-columns: minmax(0, 1fr);
	margin-top: var(--sm-space-12);
	padding: var(--sm-space-6);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-xl);
	background-color: var(--sm-color-surface);
}

@media (min-width: 640px) {
	.sm-author {
		grid-template-columns: 84px minmax(0, 1fr);
	}
}

.sm-author__avatar {
	width: 84px;
	height: 84px;
	border-radius: var(--sm-radius-circle);
	border: var(--sm-border-width) solid var(--sm-color-border);
}

.sm-author__name {
	font-size: var(--sm-text-h4);
	font-weight: var(--sm-weight-bold);
	color: var(--sm-color-text);
}

.sm-author__role {
	font-size: var(--sm-text-sm);
	color: var(--sm-color-primary);
}

.sm-author__bio,
.sm-author__experience {
	margin-top: var(--sm-space-3);
	font-size: var(--sm-text-sm);
	line-height: var(--sm-leading-relaxed);
	color: var(--sm-color-text-muted);
}

.sm-author__facts {
	display: flex;
	flex-wrap: wrap;
	gap: var(--sm-space-2);
	margin-top: var(--sm-space-4);
}

.sm-author__fact {
	display: inline-flex;
	align-items: center;
	gap: var(--sm-space-1-5);
	padding: var(--sm-space-1) var(--sm-space-3);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-pill);
	font-size: var(--sm-text-2xs);
	color: var(--sm-color-text-muted);
}

.sm-author__links {
	display: flex;
	gap: var(--sm-space-2);
	margin-top: var(--sm-space-4);
}

/* Sources */

.sm-sources {
	margin-top: var(--sm-space-10);
	padding-top: var(--sm-space-6);
	border-top: var(--sm-border-width) solid var(--sm-color-divider);
}

.sm-sources__title {
	margin-bottom: var(--sm-space-3);
	font-size: var(--sm-text-2xs);
	font-weight: var(--sm-weight-semibold);
	letter-spacing: var(--sm-tracking-widest);
	text-transform: uppercase;
	color: var(--sm-color-text-subtle);
}

.sm-sources__list {
	display: flex;
	flex-direction: column;
	gap: var(--sm-space-2);
	margin: 0;
	padding-left: var(--sm-space-5);
	font-size: var(--sm-text-sm);
	color: var(--sm-color-text-muted);
}

.sm-sources__list li {
	margin-top: 0;
}

.sm-editorial-note {
	margin-top: var(--sm-space-6);
	padding: var(--sm-space-4) var(--sm-space-5);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-lg);
	background-color: var(--sm-alpha-white-2);
	font-size: var(--sm-text-xs);
	line-height: var(--sm-leading-relaxed);
	color: var(--sm-color-text-subtle);
}

/* ==========================================================================
   Cluster navigation
   ========================================================================== */

.sm-cluster {
	margin-top: var(--sm-space-12);
}

.sm-cluster__title {
	margin-bottom: var(--sm-space-5);
	font-size: var(--sm-text-h3);
	font-weight: var(--sm-weight-bold);
	color: var(--sm-color-text);
}

.sm-cluster__grid {
	display: grid;
	gap: var(--sm-space-4);
	grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 700px) {
	.sm-cluster__grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

.sm-cluster__card {
	position: relative;
	display: flex;
	flex-direction: column;
	gap: var(--sm-space-2);
	padding: var(--sm-space-5);
	border: var(--sm-border-width) solid var(--sm-color-border);
	border-radius: var(--sm-radius-lg);
	background-color: var(--sm-color-surface);
	transition: var(--sm-transition-colors), var(--sm-transition-transform);
}

.sm-cluster__card:hover {
	border-color: var(--sm-color-border-brand);
	transform: translateY(-2px);
}

.sm-cluster__card-title {
	font-size: var(--sm-text-md);
	font-weight: var(--sm-weight-semibold);
	line-height: var(--sm-leading-snug);
	color: var(--sm-color-text);
}

.sm-cluster__card-title a::after {
	content: "";
	position: absolute;
	inset: 0;
	border-radius: inherit;
}

.sm-cluster__card:hover .sm-cluster__card-title {
	color: var(--sm-color-primary);
}

.sm-cluster__card-meta {
	font-size: var(--sm-text-xs);
	color: var(--sm-color-text-subtle);
}

.sm-cluster__topics {
	display: flex;
	flex-wrap: wrap;
	gap: var(--sm-space-2);
	margin-bottom: var(--sm-space-6);
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */

.sm-hub-crumbs {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--sm-space-1) var(--sm-space-2);
	margin-bottom: var(--sm-space-5);
	font-size: var(--sm-text-xs);
	color: var(--sm-color-text-subtle);
}

.sm-hub-crumbs a {
	color: var(--sm-color-text-muted);
	transition: var(--sm-transition-colors);
}

.sm-hub-crumbs a:hover {
	color: var(--sm-color-primary);
}

.sm-hub-crumbs__sep {
	color: var(--sm-color-text-disabled);
}