/*
 * hub.css — NumberSleven
 * Knowledge Hub styles. Loaded only on hub pages (via ns-hub handle).
 * Depends on ns-vars (enqueued first in inc/hub.php).
 *
 * Uses CSS custom properties from variables.css:
 *   --color-navy, --color-amber, --color-ivory, --color-slate
 *   --color-surface, --color-border
 *   --font-display, --font-body, --font-data
 *   --radius-sm, --radius-md, --radius-lg
 *   --max-width, --shadow-card
 *
 * Where existing main.css classes cover a need (e.g. .prose, .sd-card,
 * .btn, .eyebrow, .breadcrumb), this file does not re-define them.
 * Hub-specific additions only.
 */


/* ════════════════════════════════════════════════════════════════
   3-COLUMN LAYOUT
   ════════════════════════════════════════════════════════════════ */

.hub-layout {
	display: grid;
	grid-template-columns: 220px 1fr 220px;
	align-items: start;
	min-height: calc(100vh - 64px); /* 64px = site-header height */
	max-width: var(--max-width);
	margin: 0 auto;
}

.hub-layout__body {
	padding: 28px 44px 72px;
	min-width: 0;
}


/* ════════════════════════════════════════════════════════════════
   LEFT SIDEBAR
   ════════════════════════════════════════════════════════════════ */

.hub-sidebar-left {
	border-right: 0.5px solid var(--color-border);
	background: var(--color-surface);
	padding: 24px 0 48px;
	position: sticky;
	top: 64px;
	height: calc(100vh - 64px);
	overflow-y: auto;
}

.hub-leftnav__home {
	display: block;
	font-family: var(--font-body);
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--color-slate);
	padding: 10px 20px 14px;
	text-decoration: none;
}

.hub-leftnav__home:hover,
.hub-leftnav__home--active {
	color: var(--color-navy);
}

.hub-leftnav__section {
	border-top: 0.5px solid var(--color-border);
	padding-top: 6px;
	margin-top: 4px;
}

.hub-leftnav__pillar {
	display: block;
	font-family: var(--font-body);
	font-size: 0.625rem;
	font-weight: 600;
	color: rgba(13, 27, 42, 0.42);
	padding: 5px 20px;
	text-decoration: none;
	letter-spacing: 0.025em;
	line-height: 1.4;
}

.hub-leftnav__pillar--active,
.hub-leftnav__pillar:hover {
	color: var(--color-navy);
}

.hub-leftnav__articles {
	list-style: none;
	margin: 0;
	padding: 0;
}

.hub-leftnav__link {
	display: block;
	font-family: var(--font-body);
	font-size: 0.6875rem;
	color: var(--color-slate);
	padding: 4px 20px 4px 30px;
	text-decoration: none;
	border-left: 2px solid transparent;
	line-height: 1.45;
	transition: color 0.1s;
}

.hub-leftnav__link:hover {
	color: var(--color-navy);
	background: rgba(13, 27, 42, 0.03);
}

.hub-leftnav__link--current {
	color: var(--color-navy);
	font-weight: 500;
	border-left-color: var(--color-amber);
	background: rgba(201, 137, 43, 0.07);
}


/* ════════════════════════════════════════════════════════════════
   RIGHT SIDEBAR
   sd-card is styled in main.css. We position it and add hub-
   specific list styles for the ToC links.
   ════════════════════════════════════════════════════════════════ */

.hub-sidebar-right {
	border-left: 0.5px solid var(--color-border);
	padding: 28px 16px;
	position: relative;
}

/* sd-card position override for the ToC card */
.hub-toc-card {
	position: relative;
	will-change: transform;
}

.hub-toc-list {
	list-style: none;
	margin: 0 0 0.5rem;
	padding: 0;
}

.hub-toc-list li {
	margin: 0;
}

.hub-toc-link {
	display: block;
	font-family: var(--font-body);
	font-size: 0.6875rem;
	color: var(--color-slate);
	padding: 3px 0 3px 8px;
	border-left: 1.5px solid transparent;
	text-decoration: none;
	line-height: 1.45;
	margin-bottom: 2px;
	transition: color 0.1s;
}

.hub-toc-link:hover {
	color: var(--color-navy);
}

.hub-toc-link--active {
	color: var(--color-amber);
	border-left-color: var(--color-amber);
	font-weight: 500;
}


/* ════════════════════════════════════════════════════════════════
   ARTICLE HEADER
   ════════════════════════════════════════════════════════════════ */

.hub-article-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	margin-bottom: 0.625rem;
}

.hub-tag {
	display: inline-block;
	font-family: var(--font-body);
	font-size: 0.625rem;
	font-weight: 500;
	padding: 3px 10px;
	border-radius: 20px;
	text-decoration: none;
	line-height: 1.6;
}

.hub-tag--pillar {
	background: rgba(29, 158, 117, 0.1);
	color: #0F6E56;
}

.hub-tag--pillar:hover {
	background: rgba(29, 158, 117, 0.18);
}

.hub-tag--authority {
	background: rgba(83, 74, 183, 0.1);
	color: #3C3489;
}

.hub-tag--authority:hover {
	background: rgba(83, 74, 183, 0.18);
}

.hub-tag--tier {
	background: rgba(13, 27, 42, 0.07);
	color: var(--color-slate);
}

.hub-article-title {
	font-family: var(--font-display);
	font-size: 2.125rem;
	font-weight: 700;
	color: var(--color-navy);
	line-height: 1.22;
	margin: 0 0 0.875rem;
	letter-spacing: -0.01em;
}

.hub-article-meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.625rem;
	font-family: var(--font-body);
	font-size: 0.75rem;
	color: var(--color-slate);
	margin-bottom: 0.875rem;
}

.hub-meta-sep {
	color: var(--color-border);
}

.hub-meta-package {
	font-size: 0.625rem;
	font-weight: 500;
	background: rgba(201, 137, 43, 0.1);
	color: #5A3500;
	padding: 3px 10px;
	border-radius: 20px;
	text-decoration: none;
	transition: background 0.1s;
}

.hub-meta-package:hover {
	background: rgba(201, 137, 43, 0.18);
}

.hub-article-divider {
	border: none;
	border-top: 0.5px solid var(--color-border);
	margin: 0 0 1.75rem;
}


/* ════════════════════════════════════════════════════════════════
   ARTICLE BODY
   .prose is styled in main.css. Override only hub-specific additions.
   ════════════════════════════════════════════════════════════════ */

/* Amber left border on H2s within hub articles */
.hub-article-body.prose h2 {
	padding-left: 14px;
	border-left: 3px solid var(--color-amber);
}

/* Callout boxes — added by author in Classic Editor HTML view:
   <div class="hub-callout hub-callout--tip">
     <span class="hub-callout__label">Key point</span>
     Content here.
   </div>
   Available variants: hub-callout--tip | --note | --warning  */

.hub-callout {
	padding: 0.875rem 1.125rem;
	margin: 1.375rem 0;
	border-radius: 0 var(--radius-md) var(--radius-md) 0;
	border-left: 3px solid;
	font-size: 0.9375rem;
	line-height: 1.65;
}

.hub-callout__label {
	display: block;
	font-size: 0.625rem;
	font-weight: 600;
	letter-spacing: 0.055em;
	margin-bottom: 4px;
	opacity: 0.7;
}

.hub-callout--tip {
	background: rgba(29, 158, 117, 0.07);
	border-color: #1D9E75;
	color: #04342C;
}

.hub-callout--note {
	background: rgba(13, 27, 42, 0.04);
	border-color: rgba(13, 27, 42, 0.24);
	color: var(--color-navy);
}

.hub-callout--warning {
	background: rgba(201, 137, 43, 0.08);
	border-color: var(--color-amber);
	color: #4A3210;
}


/* ════════════════════════════════════════════════════════════════
   CTA BLOCK (funnel articles — Pillars 1–3 only)
   Uses .section--dark from main.css for navy background.
   Adds hub-specific title and body styles.
   ════════════════════════════════════════════════════════════════ */

.hub-article-cta {
	border-radius: var(--radius-lg);
	padding: 1.625rem 1.875rem;
	margin: 2.5rem 0 1.375rem;
}

/* Override .prose h2 border within CTA — the CTA title is not a
   content heading and should not have the amber left border. */
.hub-article-cta .hub-cta-title,
.hub-article-body .hub-article-cta .hub-cta-title {
	font-family: var(--font-display);
	font-size: 1.375rem;
	font-weight: 700;
	color: var(--color-ivory);
	margin: 0 0 0.625rem;
	line-height: 1.28;
	padding-left: 0 !important;
	border-left: none !important;
}

.hub-cta-body {
	font-family: var(--font-body);
	font-size: 0.875rem;
	color: rgba(250, 250, 247, 0.62);
	margin: 0 0 1rem;
	line-height: 1.55;
}


/* ════════════════════════════════════════════════════════════════
   FEEDBACK
   ════════════════════════════════════════════════════════════════ */

.hub-feedback {
	display: flex;
	align-items: center;
	gap: 0.625rem;
	padding: 1.125rem 0;
	border-top: 0.5px solid var(--color-border);
	margin-top: 0.75rem;
}

.hub-feedback-label {
	font-family: var(--font-body);
	font-size: 0.8125rem;
	color: var(--color-slate);
}

.hub-feedback-btn {
	font-family: var(--font-body);
	font-size: 0.75rem;
	padding: 5px 14px;
	border: 0.5px solid var(--color-border);
	border-radius: var(--radius-sm);
	cursor: pointer;
	background: transparent;
	color: var(--color-slate);
	transition: all 0.15s;
}

.hub-feedback-btn:hover,
.hub-feedback-btn--selected {
	background: var(--color-navy);
	color: var(--color-ivory);
	border-color: var(--color-navy);
}


/* ════════════════════════════════════════════════════════════════
   PREV / NEXT
   ════════════════════════════════════════════════════════════════ */

.hub-prevnext {
	display: flex;
	gap: 0.75rem;
	margin-top: 1.75rem;
}

.hub-prevnext__item {
	flex: 1;
	border: 0.5px solid var(--color-border);
	border-radius: var(--radius-lg);
	padding: 0.875rem 1.125rem;
	text-decoration: none;
	transition: border-color 0.15s, box-shadow 0.15s;
}

.hub-prevnext__item:hover {
	border-color: var(--color-amber);
	box-shadow: var(--shadow-card);
}

.hub-prevnext__item--next {
	text-align: right;
}

.hub-prevnext__dir {
	display: block;
	font-family: var(--font-body);
	font-size: 0.625rem;
	color: var(--color-slate);
	margin-bottom: 4px;
	opacity: 0.7;
}

.hub-prevnext__title {
	display: block;
	font-family: var(--font-body);
	font-size: 0.8125rem;
	font-weight: 500;
	color: var(--color-navy);
	line-height: 1.4;
}


/* ════════════════════════════════════════════════════════════════
   HUB ARCHIVE — landing (/hub/)
   ════════════════════════════════════════════════════════════════ */

.hub-archive-section {
	padding: 48px 0 80px;
}

.hub-archive-inner {
	max-width: var(--max-width);
	margin: 0 auto;
	padding: 0 40px;
}

.hub-pillar-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1.25rem;
}

.hub-pillar-card {
	display: flex;
	flex-direction: column;
	border: 0.5px solid var(--color-border);
	border-radius: var(--radius-lg);
	padding: 1.625rem 1.75rem;
	text-decoration: none;
	background: var(--color-ivory);
	box-shadow: var(--shadow-card);
	transition: border-color 0.15s, box-shadow 0.15s;
}

.hub-pillar-card:hover {
	border-color: var(--color-amber);
	box-shadow: 0 4px 16px rgba(13, 27, 42, 0.09);
}

.hub-pillar-card--authority {
	border-color: rgba(83, 74, 183, 0.18);
}

.hub-pillar-card__label {
	font-family: var(--font-body);
	font-size: 0.625rem;
	font-weight: 500;
	color: var(--color-slate);
	margin: 0 0 0.5rem;
	opacity: 0.7;
}

.hub-pillar-card__desc {
	font-family: var(--font-body);
	font-size: 0.875rem;
	color: var(--color-slate);
	line-height: 1.58;
	margin: 0 0 1.25rem;
	flex: 1;
}

.hub-pillar-card__footer {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding-top: 0.875rem;
	border-top: 0.5px solid var(--color-border);
	gap: 8px;
}

.hub-pillar-card__count {
	font-family: var(--font-body);
	font-size: 0.6875rem;
	font-weight: 500;
	color: var(--color-slate);
}

.hub-pillar-card__pkg {
	font-family: var(--font-body);
	font-size: 0.625rem;
	font-weight: 500;
	color: var(--color-amber);
}

.hub-pillar-card--authority .hub-pillar-card__pkg {
	color: rgba(83, 74, 183, 0.7);
}


/* ════════════════════════════════════════════════════════════════
   PILLAR ARCHIVE — /hub/pillar/{slug}/
   ════════════════════════════════════════════════════════════════ */

.hub-archive-pillar-title {
	font-family: var(--font-display);
	font-size: 1.875rem;
	font-weight: 700;
	color: var(--color-navy);
	margin: 0 0 0.375rem;
	line-height: 1.25;
}

.hub-tier-heading {
	font-family: var(--font-body);
	font-size: 0.6875rem;
	font-weight: 600;
	color: var(--color-slate);
	letter-spacing: 0.06em;
	margin: 2.25rem 0 0.875rem;
	padding-bottom: 0.5rem;
	border-bottom: 0.5px solid var(--color-border);
}

.hub-article-list {
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
}

.hub-article-card {
	display: block;
	padding: 1rem 1.25rem;
	border: 0.5px solid var(--color-border);
	border-radius: var(--radius-md);
	text-decoration: none;
	background: var(--color-ivory);
	box-shadow: var(--shadow-card);
	transition: border-color 0.15s;
}

.hub-article-card:hover {
	border-color: var(--color-amber);
}

.hub-article-card h3 {
	font-family: var(--font-body);
	font-size: 0.9375rem;
	font-weight: 500;
	color: var(--color-navy);
	margin: 0 0 0.3125rem;
	line-height: 1.4;
}

.hub-article-card p {
	font-family: var(--font-body);
	font-size: 0.8125rem;
	color: var(--color-slate);
	margin: 0;
	line-height: 1.52;
}


/* ════════════════════════════════════════════════════════════════
   RESPONSIVE
   Breakpoints consistent with main.css (900px, 640px observed)
   ════════════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
	.hub-layout {
		grid-template-columns: 180px 1fr 180px;
	}
}

@media (max-width: 900px) {
	.hub-layout {
		grid-template-columns: 1fr;
	}
	.hub-sidebar-left,
	.hub-sidebar-right {
		display: none;
	}
	.hub-layout__body {
		padding: 20px 24px 48px;
	}
	.hub-pillar-grid {
		grid-template-columns: 1fr;
	}
	.hub-archive-inner {
		padding: 0 24px;
	}
}

@media (max-width: 640px) {
	.hub-article-title {
		font-size: 1.625rem;
	}
	.hub-prevnext {
		flex-direction: column;
	}
	.hub-prevnext__item--next {
		text-align: left;
	}
	.hub-article-cta {
		padding: 1.25rem 1.375rem;
	}
}