/**
 * Pest Tech Research — Blog & Editorial Stylesheet
 *
 * Styles for the Blogs Hub, Category Archives, and Single Article pages.
 * Fully integrated with the official Pest Tech Research Brand Identity:
 * - Deep Industrial Navy: #0F2942
 * - Technical Ochre: #B45309
 * - Slate: #64748B
 * - Off White: #F8FAFC
 * - Charcoal: #1F2937
 *
 * @package Pest_Tech_Research
 */

/* ==========================================================================
   1. Blogs Hub Layout & Hero
   ========================================================================== */
.ptr-blog-hub {
	padding-top: var(--ptr-space-8);
	padding-bottom: var(--ptr-space-12);
}

.ptr-blog-hero {
	margin-bottom: var(--ptr-space-8);
	padding-bottom: var(--ptr-space-6);
	border-bottom: 1px solid var(--ptr-color-border);
}

.ptr-blog-eyebrow {
	display: inline-block;
	font-size: var(--ptr-font-xs);
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--ptr-ochre);
	margin-bottom: var(--ptr-space-2);
}

.ptr-blog-title {
	font-size: clamp(2rem, 3.5vw, 2.75rem);
	font-weight: 800;
	color: var(--ptr-navy);
	line-height: 1.15;
	margin-top: 0;
	margin-bottom: var(--ptr-space-3);
}

.ptr-blog-lead {
	font-size: var(--ptr-font-lg);
	color: var(--ptr-charcoal);
	max-width: 720px;
	line-height: 1.5;
	margin: 0;
}

/* Category Filter Navigation */
.ptr-blog-categories-nav {
	display: flex;
	flex-wrap: wrap;
	gap: var(--ptr-space-2);
	margin-bottom: var(--ptr-space-8);
	padding: 0;
	list-style: none;
}

.ptr-blog-category-pill {
	display: inline-block;
	padding: 8px 16px;
	font-size: var(--ptr-font-sm);
	font-weight: 600;
	border-radius: var(--ptr-radius-full);
	border: 1px solid var(--ptr-color-border);
	background-color: var(--ptr-color-surface);
	color: var(--ptr-slate-dark);
	text-decoration: none;
	transition: all 0.2s ease;
}

.ptr-blog-category-pill:hover,
.ptr-blog-category-pill:focus {
	border-color: var(--ptr-navy);
	color: var(--ptr-navy);
	background-color: var(--ptr-offwhite);
}

.ptr-blog-category-pill--active {
	background-color: var(--ptr-navy);
	border-color: var(--ptr-navy);
	color: #FFFFFF;
}

.ptr-blog-category-pill--active:hover {
	background-color: var(--ptr-navy-hover);
	color: #FFFFFF;
}

/* ==========================================================================
   2. Featured Article Card
   ========================================================================== */
.ptr-featured-article {
	margin-bottom: var(--ptr-space-12);
	background-color: var(--ptr-card-bg);
	border: 1px solid var(--ptr-card-border);
	border-radius: var(--ptr-card-radius);
	overflow: hidden;
	box-shadow: var(--ptr-card-shadow);
	transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.ptr-featured-article:hover {
	transform: translateY(-2px);
	box-shadow: var(--ptr-card-shadow-hover);
	border-color: var(--ptr-color-primary);
}

.ptr-featured-grid {
	display: grid;
	grid-template-columns: 1fr;
}

@media (min-width: 840px) {
	.ptr-featured-grid {
		grid-template-columns: 1.15fr 1fr;
	}
}

.ptr-featured-media {
	position: relative;
	background-color: var(--ptr-navy-dark);
	aspect-ratio: 16 / 9;
	overflow: hidden;
}

@media (min-width: 840px) {
	.ptr-featured-media {
		aspect-ratio: auto;
		min-height: 100%;
	}
}

.ptr-featured-media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.ptr-featured-content {
	padding: var(--ptr-space-8);
	display: flex;
	flex-direction: column;
	justify-content: center;
}

.ptr-category-badge {
	display: inline-block;
	font-size: var(--ptr-font-xs);
	font-weight: 700;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	color: var(--ptr-ochre);
	background-color: var(--ptr-ochre-subtle);
	padding: 4px 10px;
	border-radius: var(--ptr-radius-sm);
	margin-bottom: var(--ptr-space-3);
	line-height: 1.2;
	text-decoration: none;
	width: fit-content;
	transition: background-color 0.15s ease, color 0.15s ease;
}

.ptr-category-badge:hover {
	background-color: var(--ptr-ochre);
	color: #ffffff;
}

.ptr-featured-title {
	font-size: clamp(1.4rem, 2.2vw, 1.85rem);
	font-weight: 800;
	color: var(--ptr-navy);
	margin-top: 0;
	margin-bottom: var(--ptr-space-3);
	line-height: 1.25;
}

.ptr-featured-title a {
	color: inherit;
	text-decoration: none;
	transition: color 0.15s ease;
}

.ptr-featured-title a:hover {
	color: var(--ptr-ochre);
}

.ptr-featured-excerpt {
	font-size: var(--ptr-font-base);
	color: var(--ptr-charcoal);
	line-height: 1.6;
	margin-top: 0;
	margin-bottom: var(--ptr-space-6);
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 4;
	overflow: hidden;
}

.ptr-article-meta {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: var(--ptr-space-2);
	font-size: var(--ptr-font-xs);
	color: var(--ptr-slate);
	font-variant-numeric: tabular-nums;
}

.ptr-meta-item {
	display: inline-flex;
	align-items: center;
}

.ptr-meta-divider {
	color: var(--ptr-color-border-strong);
}

/* ==========================================================================
   3. Blog Articles Grid & Rebuilt Card Block System
   ========================================================================== */
.ptr-blog-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--ptr-space-8);
	margin-bottom: var(--ptr-space-12);
}

@media (min-width: 640px) {
	.ptr-blog-grid {
		grid-template-columns: repeat(2, 1fr);
		gap: var(--ptr-space-6);
	}
}

@media (min-width: 1024px) {
	.ptr-blog-grid {
		grid-template-columns: repeat(3, 1fr);
		gap: var(--ptr-space-8);
	}
}

.ptr-blog-card {
	display: flex;
	flex-direction: column;
	height: 100%;
	background-color: var(--ptr-card-bg);
	border: 1px solid var(--ptr-card-border);
	border-radius: var(--ptr-card-radius);
	overflow: hidden;
	box-shadow: var(--ptr-card-shadow);
	transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.ptr-blog-card:hover {
	transform: translateY(-3px);
	box-shadow: var(--ptr-card-shadow-hover);
	border-color: var(--ptr-color-primary);
}

.ptr-card-media {
	aspect-ratio: 16 / 9;
	background-color: var(--ptr-navy-dark);
	position: relative;
	overflow: hidden;
}

.ptr-card-media picture,
.ptr-card-media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform 0.3s ease;
}

.ptr-blog-card:hover .ptr-card-media img {
	transform: scale(1.025);
}

.ptr-card-body {
	padding: var(--ptr-card-padding);
	display: flex;
	flex-direction: column;
	flex-grow: 1;
}

.ptr-card-body .ptr-category-badge {
	margin-bottom: var(--ptr-space-3);
}

.ptr-card-title {
	font-size: 1.15rem;
	font-weight: 700;
	color: var(--ptr-navy);
	line-height: 1.35;
	margin-top: 0;
	margin-bottom: var(--ptr-space-3);
}

.ptr-card-title a {
	color: inherit;
	text-decoration: none;
	transition: color 0.15s ease;
}

.ptr-card-title a:hover {
	color: var(--ptr-ochre);
}

.ptr-card-excerpt {
	font-size: var(--ptr-font-sm);
	color: var(--ptr-slate-dark);
	line-height: 1.55;
	margin-top: 0;
	margin-bottom: var(--ptr-space-5);
	flex-grow: 1;
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 3;
	overflow: hidden;
}

.ptr-card-footer {
	padding-top: var(--ptr-space-4);
	border-top: 1px solid var(--ptr-color-border);
	margin-top: auto;
}

.ptr-card-footer .ptr-article-meta {
	display: flex;
	align-items: center;
	justify-content: space-between;
	font-size: var(--ptr-font-xs);
	color: var(--ptr-slate);
	font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   4. Editorial Trust Banner
   ========================================================================== */
.ptr-editorial-trust-banner {
	background-color: var(--ptr-offwhite);
	border: 1px solid var(--ptr-color-border);
	border-left: 4px solid var(--ptr-navy);
	border-radius: var(--ptr-radius-md);
	padding: var(--ptr-space-6) var(--ptr-space-8);
	margin-bottom: var(--ptr-space-10);
}

.ptr-trust-banner-inner {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--ptr-space-4);
}

@media (min-width: 768px) {
	.ptr-trust-banner-inner {
		grid-template-columns: 2fr 1fr;
		align-items: center;
	}
}

.ptr-trust-title {
	font-size: var(--ptr-font-lg);
	font-weight: 700;
	color: var(--ptr-navy);
	margin-top: 0;
	margin-bottom: var(--ptr-space-2);
}

.ptr-trust-desc {
	font-size: var(--ptr-font-sm);
	color: var(--ptr-charcoal);
	line-height: 1.55;
	margin: 0;
}

.ptr-trust-links {
	display: flex;
	flex-direction: column;
	gap: var(--ptr-space-2);
}

.ptr-trust-link {
	font-size: var(--ptr-font-sm);
	font-weight: 600;
	color: var(--ptr-ochre);
	text-decoration: none;
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.ptr-trust-link:hover {
	text-decoration: underline;
}

/* ==========================================================================
   5. Single Article Layout & Content
   ========================================================================== */
.ptr-single-article {
	padding-top: var(--ptr-space-6);
	padding-bottom: var(--ptr-space-12);
}

.ptr-article-header-section {
	max-width: 820px;
	margin-left: auto;
	margin-right: auto;
	margin-bottom: var(--ptr-space-6);
}

.ptr-article-title {
	font-size: clamp(2rem, 3.2vw, 2.75rem);
	font-weight: 800;
	color: var(--ptr-navy);
	line-height: 1.2;
	margin-top: var(--ptr-space-3);
	margin-bottom: var(--ptr-space-4);
}

.ptr-article-header-meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--ptr-space-2) var(--ptr-space-3);
	font-size: var(--ptr-font-sm);
	color: var(--ptr-slate);
	padding-bottom: var(--ptr-space-4);
	border-bottom: 1px solid var(--ptr-color-border);
	font-variant-numeric: tabular-nums;
}

.ptr-article-featured-image {
	max-width: 960px;
	margin-left: auto;
	margin-right: auto;
	margin-bottom: var(--ptr-space-8);
	border-radius: var(--ptr-radius-md);
	overflow: hidden;
	background-color: var(--ptr-navy-dark);
	box-shadow: var(--ptr-shadow-sm);
}

.ptr-article-featured-image img {
	width: 100%;
	height: auto;
	display: block;
}

/* Direct Answer Quick Box */
.ptr-quick-answer-box {
	background-color: #F0FDF4;
	border: 1px solid #BBF7D0;
	border-left: 4px solid var(--ptr-evidence-verified-dot);
	border-radius: var(--ptr-radius-md);
	padding: var(--ptr-space-5) var(--ptr-space-6);
	margin-bottom: var(--ptr-space-8);
}

.ptr-quick-answer-label {
	font-size: var(--ptr-font-xs);
	font-weight: 700;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: #166534;
	margin-bottom: var(--ptr-space-2);
}

.ptr-quick-answer-text {
	font-size: var(--ptr-font-base);
	font-weight: 500;
	color: #14532D;
	line-height: 1.6;
	margin: 0;
}

/* Key Takeaways Box */
.ptr-takeaways-box {
	background-color: var(--ptr-offwhite);
	border: 1px solid var(--ptr-color-border);
	border-radius: var(--ptr-radius-md);
	padding: var(--ptr-space-6);
	margin-bottom: var(--ptr-space-8);
}

.ptr-takeaways-title {
	font-size: var(--ptr-font-base);
	font-weight: 700;
	color: var(--ptr-navy);
	margin-top: 0;
	margin-bottom: var(--ptr-space-3);
	display: flex;
	align-items: center;
	gap: 8px;
}

.ptr-takeaways-list {
	margin: 0;
	padding-left: var(--ptr-space-5);
	color: var(--ptr-charcoal);
	font-size: var(--ptr-font-sm);
	line-height: 1.65;
}

.ptr-takeaways-list li {
	margin-bottom: var(--ptr-space-2);
}

/* Article Body Typography */
.ptr-article-body {
	max-width: 820px;
	margin-left: auto;
	margin-right: auto;
	color: var(--ptr-charcoal);
	font-size: 1.0625rem;
	line-height: 1.75;
}

.ptr-article-body h2 {
	font-size: 1.65rem;
	font-weight: 800;
	color: var(--ptr-navy);
	margin-top: var(--ptr-space-8);
	margin-bottom: var(--ptr-space-3);
	line-height: 1.3;
	padding-bottom: var(--ptr-space-2);
	border-bottom: 1px solid var(--ptr-color-border);
}

.ptr-article-body h3 {
	font-size: 1.25rem;
	font-weight: 700;
	color: var(--ptr-navy);
	margin-top: var(--ptr-space-6);
	margin-bottom: var(--ptr-space-2);
	line-height: 1.35;
}

.ptr-article-body p {
	margin-top: 0;
	margin-bottom: var(--ptr-space-4);
}

.ptr-article-body ul,
.ptr-article-body ol {
	margin-top: 0;
	margin-bottom: var(--ptr-space-5);
	padding-left: var(--ptr-space-6);
}

.ptr-article-body li {
	margin-bottom: var(--ptr-space-2);
}

.ptr-article-body a {
	color: var(--ptr-ochre);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.ptr-article-body a:hover {
	color: var(--ptr-ochre-hover);
}

/* Technical Data Tables in Articles */
.ptr-article-table-wrap {
	overflow-x: auto;
	margin-top: var(--ptr-space-5);
	margin-bottom: var(--ptr-space-6);
	border: 1px solid var(--ptr-color-border);
	border-radius: var(--ptr-radius-md);
}

.ptr-article-table {
	width: 100%;
	border-collapse: collapse;
	font-size: var(--ptr-font-sm);
	font-variant-numeric: tabular-nums;
}

.ptr-article-table th {
	background-color: var(--ptr-navy);
	color: #FFFFFF;
	font-weight: 700;
	text-align: left;
	padding: 10px 14px;
}

.ptr-article-table td {
	padding: 10px 14px;
	border-top: 1px solid var(--ptr-color-border);
	color: var(--ptr-charcoal);
	vertical-align: top;
}

.ptr-article-table tr:nth-child(even) td {
	background-color: var(--ptr-offwhite);
}

/* Callout Boxes in Articles */
.ptr-article-callout {
	background-color: var(--ptr-offwhite);
	border: 1px solid var(--ptr-color-border);
	border-left: 4px solid var(--ptr-ochre);
	border-radius: var(--ptr-radius-sm);
	padding: var(--ptr-space-4) var(--ptr-space-5);
	margin-top: var(--ptr-space-5);
	margin-bottom: var(--ptr-space-6);
	font-size: var(--ptr-font-sm);
	color: var(--ptr-charcoal);
	line-height: 1.6;
}

.ptr-article-callout-title {
	font-weight: 700;
	color: var(--ptr-navy);
	margin-bottom: 4px;
}

/* Related Research & Tools Box */
.ptr-related-box {
	background-color: var(--ptr-offwhite);
	border: 1px solid var(--ptr-color-border);
	border-radius: var(--ptr-radius-md);
	padding: var(--ptr-space-6);
	margin-top: var(--ptr-space-8);
	margin-bottom: var(--ptr-space-8);
}

.ptr-related-title {
	font-size: var(--ptr-font-base);
	font-weight: 700;
	color: var(--ptr-navy);
	margin-top: 0;
	margin-bottom: var(--ptr-space-3);
}

.ptr-related-links {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--ptr-space-2);
}

@media (min-width: 640px) {
	.ptr-related-links {
		grid-template-columns: 1fr 1fr;
	}
}

.ptr-related-item {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: var(--ptr-font-sm);
}

.ptr-related-item a {
	color: var(--ptr-ochre);
	font-weight: 600;
	text-decoration: none;
}

.ptr-related-item a:hover {
	text-decoration: underline;
}

/* Sources & Citation Section */
.ptr-sources-section {
	border-top: 1px solid var(--ptr-color-border);
	padding-top: var(--ptr-space-6);
	margin-top: var(--ptr-space-8);
	font-size: var(--ptr-font-xs);
	color: var(--ptr-slate);
}

.ptr-sources-title {
	font-size: var(--ptr-font-sm);
	font-weight: 700;
	color: var(--ptr-navy);
	margin-top: 0;
	margin-bottom: var(--ptr-space-3);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.ptr-sources-list {
	margin: 0;
	padding-left: var(--ptr-space-4);
	line-height: 1.6;
}

.ptr-sources-list li {
	margin-bottom: var(--ptr-space-1);
}