/**
 * Single Article Reading Experience Stylesheet
 * 
 * Target reading width: 680px - 760px
 * Typography: Newsreader serif for headlines & drop caps, Inter for body and UI.
 */

/* ==========================================================================
   1. READING PROGRESS BAR
   ========================================================================== */

.gbt-reading-progress-bar {
	position: fixed;
	top: 0;
	left: 0;
	height: 3px;
	background: var(--gbt-accent);
	width: 0%;
	z-index: 9999;
	transition: width 0.1s ease-out;
}

/* ==========================================================================
   2. SINGLE ARTICLE HEADER
   ========================================================================== */

.gbt-single-article {
	padding: 32px 0 64px;
}

.gbt-article-breadcrumbs {
	margin-bottom: 24px;
}

.gbt-article-header {
	max-width: 880px;
	margin: 0 0 32px;
}

.gbt-article-cat-wrapper {
	display: flex;
	align-items: center;
	gap: 14px;
	margin-bottom: 18px;
}

.gbt-article-cat-pill {
	display: inline-block;
	background-color: var(--gbt-primary);
	color: var(--gbt-accent);
	padding: 5px 14px;
	font-size: 0.75rem;
	font-weight: 800;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	border-radius: var(--gbt-radius-sm);
	line-height: 1.4;
}

.gbt-article-read-badge {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	font-size: 0.8rem;
	font-weight: 600;
	color: var(--gbt-text-muted);
	line-height: 1.4;
}

.gbt-article-read-badge .gbt-icon {
	flex-shrink: 0;
}

.gbt-article-title {
	font-family: var(--gbt-font-serif);
	font-size: 2.75rem;
	font-weight: 800;
	line-height: 1.18;
	letter-spacing: -0.02em;
	color: var(--gbt-text);
	margin-bottom: 16px;
}

.gbt-article-dek {
	font-family: var(--gbt-font-serif);
	font-size: 1.25rem;
	font-weight: 400;
	font-style: italic;
	line-height: 1.5;
	color: var(--gbt-text-muted);
	margin-bottom: 24px;
}

/* Byline */
.gbt-article-byline {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 16px 0;
	border-top: 1px solid var(--gbt-border);
	border-bottom: 1px solid var(--gbt-border);
	gap: 24px;
}

.gbt-byline-left {
	display: flex;
	align-items: center;
	gap: 14px;
	min-width: 0;
}

.gbt-byline-right {
	flex-shrink: 0;
}

.gbt-author-img {
	width: 44px;
	height: 44px;
	border-radius: 50%;
	object-fit: cover;
}

.gbt-byline-info {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.gbt-byline-author-row {
	font-size: 0.9rem;
	font-weight: 700;
	color: var(--gbt-text);
}

.gbt-byline-by {
	color: var(--gbt-text-muted);
	font-weight: 400;
	margin-right: 2px;
}

.gbt-byline-name {
	color: var(--gbt-text);
}

.gbt-byline-name:hover {
	color: var(--gbt-accent);
}

.gbt-byline-role {
	font-size: 0.78rem;
	font-weight: 500;
	color: var(--gbt-text-muted);
}

.gbt-byline-dates {
	font-size: 0.78rem;
	color: var(--gbt-text-light);
	display: flex;
	align-items: center;
	gap: 6px;
}

.gbt-byline-sep {
	color: var(--gbt-border);
}

.gbt-byline-updated {
	color: var(--gbt-accent);
	font-weight: 600;
}

/* ==========================================================================
   3. HERO IMAGE FIGURE
   ========================================================================== */

.gbt-article-hero-figure {
	max-width: 1040px;
	margin: 0 0 40px;
}

.gbt-article-hero-img-wrap {
	width: 100%;
	aspect-ratio: 16 / 9;
	border-radius: var(--gbt-radius-md);
	overflow: hidden;
	background-color: var(--gbt-surface-subtle);
	border: 1px solid var(--gbt-border);
}

.gbt-article-hero-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.gbt-article-hero-caption {
	font-size: 0.78rem;
	color: var(--gbt-text-light);
	margin-top: 8px;
	padding: 0 4px;
}

/* ==========================================================================
   4. ARTICLE 2-COLUMN LAYOUT (MAIN 720px + STICKY SIDEBAR)
   ========================================================================== */

.gbt-article-layout {
	display: grid;
	grid-template-columns: minmax(0, 740px) 340px;
	justify-content: start;
	gap: 48px;
	margin-bottom: 64px;
}

.gbt-article-main-col {
	width: 100%;
	max-width: 740px;
}

.gbt-article-sidebar {
	display: flex;
	flex-direction: column;
	gap: 32px;
	position: sticky;
	top: 90px;
	align-self: start;
}

.gbt-sidebar-widget {
	background-color: var(--gbt-surface);
	border: 1px solid var(--gbt-border);
	border-radius: var(--gbt-radius-md);
	padding: 20px;
}

.gbt-sidebar-widget-title {
	font-size: 0.9rem;
	font-weight: 800;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--gbt-text);
	padding-bottom: 10px;
	margin-bottom: 16px;
	border-bottom: 1px solid var(--gbt-border);
}

.gbt-sidebar-posts {
	display: flex;
	flex-direction: column;
	gap: 14px;
}

/* ==========================================================================
   5. EDITORIAL CONTENT TYPOGRAPHY & BLOCKS
   ========================================================================== */

.gbt-article-content {
	font-family: var(--gbt-font-ui);
	font-size: 1.15rem; /* ~18.4px desktop */
	line-height: 1.8;
	color: var(--gbt-text);
}

.gbt-article-content p {
	margin-bottom: 24px;
}

.gbt-article-content h2 {
	font-family: var(--gbt-font-serif);
	font-size: 1.85rem;
	font-weight: 800;
	line-height: 1.3;
	color: var(--gbt-text);
	margin: 40px 0 16px;
	padding-bottom: 8px;
	border-bottom: 1px solid var(--gbt-border);
}

.gbt-article-content h3 {
	font-family: var(--gbt-font-serif);
	font-size: 1.45rem;
	font-weight: 700;
	line-height: 1.35;
	color: var(--gbt-text);
	margin: 32px 0 12px;
}

.gbt-article-content h4 {
	font-size: 1.15rem;
	font-weight: 700;
	margin: 24px 0 8px;
}

.gbt-article-content strong {
	font-weight: 700;
	color: var(--gbt-text);
}

.gbt-article-content a {
	color: var(--gbt-accent);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.gbt-article-content a:hover {
	color: var(--gbt-accent-hover);
}

.gbt-article-content ul,
.gbt-article-content ol {
	margin: 0 0 24px 24px;
}

.gbt-article-content ul {
	list-style: disc;
}

.gbt-article-content ol {
	list-style: decimal;
}

.gbt-article-content li {
	margin-bottom: 10px;
	padding-left: 4px;
}

/* Blockquotes & Pull Quotes */
.gbt-article-content blockquote {
	margin: 36px 0;
	padding: 24px 32px;
	background-color: var(--gbt-surface-subtle);
	border-left: 4px solid var(--gbt-accent);
	border-radius: 0 var(--gbt-radius-sm) var(--gbt-radius-sm) 0;
	font-family: var(--gbt-font-serif);
	font-size: 1.35rem;
	font-style: italic;
	line-height: 1.55;
	color: var(--gbt-text);
}

.gbt-article-content blockquote cite {
	display: block;
	font-family: var(--gbt-font-ui);
	font-size: 0.85rem;
	font-style: normal;
	font-weight: 700;
	color: var(--gbt-text-muted);
	margin-top: 12px;
}

/* Tables */
.gbt-article-content table {
	width: 100%;
	margin: 32px 0;
	border-collapse: collapse;
	font-size: 0.95rem;
	background-color: var(--gbt-surface);
	border: 1px solid var(--gbt-border);
	border-radius: var(--gbt-radius-sm);
	overflow: hidden;
}

.gbt-article-content th {
	background-color: var(--gbt-primary);
	color: #FFFFFF;
	font-weight: 700;
	text-align: left;
	padding: 12px 16px;
	font-size: 0.85rem;
	letter-spacing: 0.03em;
}

.gbt-article-content td {
	padding: 12px 16px;
	border-bottom: 1px solid var(--gbt-border);
	color: var(--gbt-text);
}

.gbt-article-content tr:last-child td {
	border-bottom: none;
}

.gbt-article-content tr:nth-child(even) {
	background-color: var(--gbt-surface-subtle);
}

/* ==========================================================================
   6. BUSINESS INTELLIGENCE BOXES (INSIGHT, EXPLAINER, TAKEAWAYS)
   ========================================================================== */

/* Insight Box */
.gbt-insight-box,
.insight-box {
	background-color: var(--gbt-surface);
	border: 1px solid var(--gbt-border);
	border-left: 4px solid var(--gbt-accent);
	border-radius: var(--gbt-radius-sm);
	padding: 24px;
	margin: 36px 0;
	box-shadow: var(--gbt-shadow-sm);
}

.gbt-insight-box::before,
.insight-box::before {
	content: "STRATEGIC INSIGHT";
	display: block;
	font-size: 0.72rem;
	font-weight: 800;
	letter-spacing: 0.08em;
	color: var(--gbt-accent);
	margin-bottom: 8px;
}

/* Explainer Box */
.gbt-explainer-box,
.explainer-box {
	background-color: var(--gbt-surface-subtle);
	border: 1px solid var(--gbt-border);
	border-top: 3px solid var(--gbt-secondary);
	border-radius: var(--gbt-radius-sm);
	padding: 24px;
	margin: 36px 0;
}

.gbt-explainer-box::before,
.explainer-box::before {
	content: "WHAT THIS MEANS FOR GCC BUSINESS";
	display: block;
	font-size: 0.72rem;
	font-weight: 800;
	letter-spacing: 0.08em;
	color: var(--gbt-text);
	margin-bottom: 8px;
}

/* Key Takeaways */
.gbt-key-takeaways,
.key-takeaways {
	background-color: var(--gbt-accent-subtle);
	border: 1px solid rgba(201, 162, 39, 0.3);
	border-radius: var(--gbt-radius-md);
	padding: 24px 28px;
	margin: 36px 0;
}

.gbt-key-takeaways h4,
.key-takeaways h4,
.gbt-key-takeaways::before,
.key-takeaways::before {
	content: "KEY TAKEAWAYS";
	display: block;
	font-size: 0.8rem;
	font-weight: 800;
	letter-spacing: 0.08em;
	color: var(--gbt-accent);
	margin-bottom: 12px;
}

.gbt-key-takeaways ul,
.key-takeaways ul {
	margin: 0 0 0 16px;
	list-style: none;
}

.gbt-key-takeaways li,
.key-takeaways li {
	position: relative;
	padding-left: 20px;
	margin-bottom: 10px;
	font-weight: 500;
	font-size: 1rem;
}

.gbt-key-takeaways li::before,
.key-takeaways li::before {
	content: "✔";
	position: absolute;
	left: 0;
	color: var(--gbt-accent);
	font-weight: bold;
}

/* ==========================================================================
   7. ARTICLE TAGS, SHARE & AUTHOR BIO
   ========================================================================== */

.gbt-article-tags {
	display: flex;
	align-items: center;
	gap: 12px;
	margin: 36px 0 24px;
	padding-top: 20px;
	border-top: 1px solid var(--gbt-border);
}

.gbt-tags-label {
	font-size: 0.75rem;
	font-weight: 700;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--gbt-text-muted);
}

.gbt-tags-list {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.gbt-tag-chip {
	display: inline-block;
	padding: 4px 12px;
	background-color: var(--gbt-surface-subtle);
	border: 1px solid var(--gbt-border);
	border-radius: var(--gbt-radius-sm);
	font-size: 0.78rem;
	font-weight: 600;
	color: var(--gbt-text);
}

.gbt-tag-chip:hover {
	border-color: var(--gbt-accent);
	color: var(--gbt-accent);
}

.gbt-article-bottom-share {
	margin-bottom: 36px;
	padding: 16px 20px;
	background-color: var(--gbt-surface);
	border: 1px solid var(--gbt-border);
	border-radius: var(--gbt-radius-sm);
}

/* Social Share Bar */
.gbt-share-bar {
	display: flex;
	align-items: center;
	gap: 14px;
}

.gbt-share-label {
	font-size: 0.75rem;
	font-weight: 700;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--gbt-text-muted);
	line-height: 1;
	white-space: nowrap;
}

.gbt-share-buttons {
	display: flex;
	align-items: center;
	gap: 8px;
}

.gbt-share-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 34px;
	height: 34px;
	border-radius: var(--gbt-radius-sm);
	background-color: var(--gbt-surface-subtle);
	border: 1px solid var(--gbt-border);
	color: var(--gbt-text);
	transition: var(--gbt-trans);
}

.gbt-share-btn:hover {
	background-color: var(--gbt-accent);
	border-color: var(--gbt-accent);
	color: #0B1220;
}

/* Author Bio Card */
.gbt-author-bio-card {
	display: flex;
	gap: 20px;
	background-color: var(--gbt-surface);
	border: 1px solid var(--gbt-border);
	border-radius: var(--gbt-radius-md);
	padding: 28px;
	margin-bottom: 40px;
	align-items: center;
}

.gbt-bio-img {
	width: 64px;
	height: 64px;
	border-radius: 50%;
	object-fit: cover;
	border: 2px solid var(--gbt-accent);
	flex-shrink: 0;
}

.gbt-bio-role-label {
	font-size: 0.7rem;
	font-weight: 800;
	letter-spacing: 0.08em;
	color: var(--gbt-accent);
	display: block;
	margin-bottom: 4px;
}

.gbt-bio-author-name {
	font-size: 1.15rem;
	font-weight: 800;
	margin-bottom: 8px;
}

.gbt-bio-text {
	font-size: 0.9rem;
	color: var(--gbt-text-muted);
	line-height: 1.6;
	margin-bottom: 10px;
}

.gbt-bio-more-link {
	font-size: 0.8rem;
	font-weight: 700;
	color: var(--gbt-accent);
}

/* Post Navigation (Prev / Next) */
.gbt-post-navigation {
	margin-bottom: 48px;
}

.gbt-nav-links {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
}

.gbt-nav-previous,
.gbt-nav-next {
	background-color: var(--gbt-surface);
	border: 1px solid var(--gbt-border);
	border-radius: var(--gbt-radius-md);
	padding: 20px;
	display: flex;
	flex-direction: column;
	gap: 6px;
	transition: var(--gbt-trans);
}

.gbt-nav-previous:hover,
.gbt-nav-next:hover {
	border-color: var(--gbt-accent);
	box-shadow: var(--gbt-shadow-sm);
}

.gbt-nav-sub {
	font-size: 0.72rem;
	font-weight: 800;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	color: var(--gbt-accent);
}

.gbt-nav-title {
	font-family: var(--gbt-font-serif);
	font-size: 1rem;
	font-weight: 700;
	color: var(--gbt-text);
	line-height: 1.35;
}

.gbt-related-section {
	margin-top: 48px;
}

/* ==========================================================================
   8. RESPONSIVE FOR SINGLE ARTICLE
   ========================================================================== */

@media (max-width: 1024px) {
	.gbt-article-layout {
		grid-template-columns: 1fr;
	}
	.gbt-article-sidebar {
		position: static;
		width: 100%;
	}
}

@media (max-width: 768px) {
	.gbt-article-title {
		font-size: 1.85rem;
	}
	.gbt-article-dek {
		font-size: 1.1rem;
	}
	.gbt-article-byline {
		flex-direction: column;
		align-items: flex-start;
		gap: 16px;
	}
	.gbt-article-content {
		font-size: 1.05rem; /* ~16.8px mobile */
	}
	.gbt-nav-links {
		grid-template-columns: 1fr;
	}
	.gbt-author-bio-card {
		flex-direction: column;
		text-align: center;
	}
}