/* ==========================================================================
   AT — Blog details (single post) layout, theo Figma design tokens
   ========================================================================== */

.at-blog-detail {
	--at-bg-primary: #ffffff;
	--at-bg-secondary: #fafafa;

	--at-brand-600: #e04f16;
	--at-brand-700: #b93815;

	--at-text-primary: #181d27;
	--at-text-secondary: #414651;
	--at-text-tertiary: #535862;
	--at-text-quaternary: #717680;
	--at-text-on-brand: #ffffff;

	--at-border-primary: #d5d7da;
	--at-border-secondary: #e9eaeb;
	--at-border-tertiary: #eaecf0;
	--at-divider: #eaecf0;

	--at-radius-sm: 6px;
	--at-radius-md: 8px;
	--at-radius-lg: 12px;
	--at-radius-full: 9999px;

	--at-shadow-xs: 0 1px 2px 0 rgba(16, 24, 40, 0.05);

	--at-fs-display-md: 36px;
	--at-fs-display-sm: 30px;
	--at-fs-display-xs: 24px;
	--at-fs-text-xl: 20px;
	--at-fs-text-lg: 18px;
	--at-fs-text-md: 16px;
	--at-fs-text-sm: 14px;
	--at-fs-text-xs: 12px;

	--at-lh-display-sm: 38px;
	--at-lh-display-xs: 32px;
	--at-lh-text-xl: 30px;
	--at-lh-text-lg: 28px;
	--at-lh-text-md: 24px;
	--at-lh-text-sm: 20px;

	--at-container-max: 1280px;
	--at-container-pad: 32px;

	font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	color: var(--at-text-primary);
	background: var(--at-bg-primary);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

.at-blog-detail *,
.at-blog-detail *::before,
.at-blog-detail *::after {
	box-sizing: border-box;
}

.at-blog-detail__container {
	max-width: var(--at-container-max);
	margin: 0 auto;
	padding-left: var(--at-container-pad);
	padding-right: var(--at-container-pad);
	width: 100%;
}

/* ---------- Breadcrumbs ---------- */

.at-blog-breadcrumbs {
	background: var(--at-bg-primary);
	border-bottom: 1px solid var(--at-border-secondary);
	padding: 16px var(--at-container-pad);
}

.at-blog-breadcrumbs__inner {
	max-width: var(--at-container-max);
	margin: 0 auto;
	padding: 0 80px;
	display: flex;
	gap: 8px;
	align-items: center;
	flex-wrap: wrap;
}

.at-blog-breadcrumbs__item,
.at-blog-breadcrumbs__current {
	font-size: var(--at-fs-text-sm);
	line-height: var(--at-lh-text-sm);
	font-weight: 600;
	margin: 0;
	width: fit-content;
}

.at-blog-breadcrumbs__item {
	color: var(--at-text-quaternary);
	text-decoration: none;
	transition: color 0.15s ease;
}

.at-blog-breadcrumbs__item:hover,
.at-blog-breadcrumbs__item:focus-visible {
	color: var(--at-text-secondary);
	text-decoration: none;
}

.at-blog-breadcrumbs__current {
	color: var(--at-brand-700);
	font-size: var(--at-fs-text-sm);
}

.at-blog-breadcrumbs__sep {
	color: var(--at-text-quaternary);
	display: inline-flex;
	align-items: center;
	line-height: 0;
}

/* ---------- Hero (featured image) ---------- */

.at-blog-hero {
	background: var(--at-bg-secondary);
	padding: 64px var(--at-container-pad);
}

.at-blog-hero__inner {
	max-width: var(--at-container-max);
	margin: 0 auto;
	padding: 0 32px;
}

.at-blog-hero__image {
	position: relative;
	width: 100%;
	aspect-ratio: 1216 / 533;
	border-radius: var(--at-radius-md);
	overflow: hidden;
	background: #f2f2f2;
	/* Tránh img position:absolute + aspect-ratio: một số bản Chromium paint sai src/object-fit tới khi reflow (vd. mở F12). */
	line-height: 0;
}

.at-blog-hero__image img {
	position: relative;
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

/* Ảnh gốc nhỏ hơn khung: hiển thị đúng kích thước thật (max-width/aspect-ratio inline), căn giữa. */
.at-blog-hero__image--native {
	margin: 0 auto;
}

.at-blog-hero__placeholder {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--at-text-quaternary);
	font-size: var(--at-fs-text-md);
}

/* ---------- Article + Sidebar layout ---------- */

.at-blog-section {
	background: var(--at-bg-primary);
	padding: 64px 0;
}

.at-blog-grid {
	display: flex;
	gap: 64px;
	align-items: flex-start;
	justify-content: center;
}

.at-blog-article {
	flex: 1 1 0;
	min-width: 0;
	max-width: 720px;
}

.at-blog-sidebar {
	flex: 0 0 280px;
	width: 280px;
	display: flex;
	flex-direction: column;
	gap: 32px;
	position: sticky;
	top: 24px;
}

/* ---------- Lead paragraph ---------- */

.at-blog-lead {
	color: var(--at-text-tertiary);
	font-size: var(--at-fs-text-xl);
	line-height: var(--at-lh-text-xl);
	font-weight: 400;
	margin: 0 0 32px;
}

.at-blog-divider {
	height: 1px;
	background: var(--at-divider);
	margin: 0 0 40px;
	border: 0;
}

/* ---------- Article content ---------- */

.at-blog-content {
	color: var(--at-text-tertiary);
	font-size: var(--at-fs-text-lg);
	line-height: var(--at-lh-text-lg);
}

.at-blog-content > * {
	margin-top: 0;
	margin-bottom: 24px;
}

.at-blog-content > *:last-child {
	margin-bottom: 0;
}

.at-blog-content h2 {
	color: var(--at-text-primary);
	font-size: var(--at-fs-display-sm);
	line-height: var(--at-lh-display-sm);
	font-weight: 600;
	letter-spacing: -0.01em;
	margin: 40px 0 20px;
	scroll-margin-top: 96px;
}

.at-blog-content h2:first-child {
	margin-top: 0;
}

.at-blog-content h3 {
	color: var(--at-text-primary);
	font-size: var(--at-fs-display-xs);
	line-height: var(--at-lh-display-xs);
	font-weight: 600;
	margin: 32px 0 16px;
	scroll-margin-top: 96px;
}

.at-blog-content h4 {
	color: var(--at-text-primary);
	font-size: var(--at-fs-text-xl);
	line-height: var(--at-lh-text-xl);
	font-weight: 600;
	margin: 24px 0 12px;
}

.at-blog-content p {
	margin: 0 0 24px;
}

.at-blog-content a {
	color: var(--at-brand-600);
	text-decoration: underline;
	text-underline-offset: 2px;
}

.at-blog-content a:hover {
	color: var(--at-brand-700);
}

.at-blog-content strong,
.at-blog-content b {
	color: var(--at-text-primary);
	font-weight: 600;
}

.at-blog-content ul,
.at-blog-content ol {
	margin: 0 0 24px;
	padding-left: 28px;
}

.at-blog-content li {
	margin-bottom: 8px;
}

.at-blog-content figure,
.at-blog-content img {
	max-width: 100%;
	height: auto;
}

.at-blog-content figure {
	margin: 48px 0;
}

.at-blog-content figure img {
	border-radius: var(--at-radius-lg);
	width: 100%;
	display: block;
}

.at-blog-content figure figcaption {
	margin-top: 12px;
	display: flex;
	gap: 6px;
	align-items: flex-start;
	color: var(--at-text-tertiary);
	font-size: var(--at-fs-text-sm);
	line-height: var(--at-lh-text-sm);
}

.at-blog-content figure figcaption::before {
	content: "";
	flex: 0 0 16px;
	width: 16px;
	height: 16px;
	margin-top: 2px;
	background: currentColor;
	-webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'><path d='M9.33 8.67a3 3 0 0 1-4.53.32l-1.34 1.34a4.67 4.67 0 0 0 6.6-6.6L8.66 5.07a3 3 0 0 1 .67 3.6Zm-2.66-1.34a3 3 0 0 1 4.53-.32l1.34-1.34a4.67 4.67 0 0 0-6.6 6.6L7.34 10.93a3 3 0 0 1-.67-3.6Z' stroke='currentColor' stroke-width='1.33' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center / contain;
	mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'><path d='M9.33 8.67a3 3 0 0 1-4.53.32l-1.34 1.34a4.67 4.67 0 0 0 6.6-6.6L8.66 5.07a3 3 0 0 1 .67 3.6Zm-2.66-1.34a3 3 0 0 1 4.53-.32l1.34-1.34a4.67 4.67 0 0 0-6.6 6.6L7.34 10.93a3 3 0 0 1-.67-3.6Z' stroke='currentColor' stroke-width='1.33' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center / contain;
}

.at-blog-content blockquote {
	margin: 48px 0;
	padding: 0;
	border: 0;
	text-align: center;
}

.at-blog-content blockquote p,
.at-blog-pullquote {
	color: var(--at-text-primary);
	font-size: var(--at-fs-display-xs);
	line-height: 32px;
	font-weight: 500;
	font-style: italic;
	text-align: center;
	margin: 0 0 32px;
}

.at-blog-content blockquote cite,
.at-blog-pullquote-cite {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 12px;
	font-style: normal;
	margin-top: 24px;
}

.at-blog-pullquote-cite__avatar {
	width: 40px;
	height: 40px;
	border-radius: var(--at-radius-full);
	border: 1px solid rgba(0, 0, 0, 0.08);
	overflow: hidden;
	background: #d6cfb7;
}

.at-blog-pullquote-cite__avatar img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.at-blog-pullquote-cite__name {
	color: var(--at-text-primary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 600;
	text-align: center;
}

.at-blog-pullquote-cite__role {
	color: var(--at-text-tertiary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 400;
	text-align: center;
}

.at-blog-content code,
.at-blog-content pre {
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	font-size: 0.9em;
}

.at-blog-content pre {
	background: #f5f5f5;
	padding: 16px 20px;
	border-radius: var(--at-radius-md);
	overflow-x: auto;
	margin: 0 0 24px;
}

.at-blog-content table {
	width: 100%;
	border-collapse: collapse;
	margin: 0 0 24px;
	font-size: var(--at-fs-text-md);
}

.at-blog-content th,
.at-blog-content td {
	border: 1px solid var(--at-border-tertiary);
	padding: 12px 16px;
	text-align: left;
}

/* ---------- Sidebar blocks ---------- */

.at-blog-sidebar__divider {
	height: 1px;
	background: var(--at-divider);
}

.at-blog-sidebar__title {
	color: var(--at-brand-600);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 600;
	margin: 0 0 16px;
}

/* TOC */
.at-blog-toc {
	display: flex;
	flex-direction: column;
	gap: 12px;
	list-style: none;
	padding: 0;
	margin: 0;
}

.at-blog-toc__item--h3 {
	padding-left: 16px;
}

.at-blog-toc__link {
	display: inline-flex;
	gap: 6px;
	align-items: center;
	color: var(--at-text-tertiary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 600;
	text-decoration: none;
	transition: color 0.15s ease;
	cursor: pointer;
}

.at-blog-toc__link:hover {
	color: var(--at-text-primary);
}

.at-blog-toc__link.is-active {
	color: var(--at-brand-600);
}

/* Contributors */
.at-blog-contributors {
	display: flex;
	flex-direction: column;
	gap: 24px;
	list-style: none;
	margin: 0;
	padding: 0;
}

.at-blog-contributor {
	display: flex;
	gap: 12px;
	align-items: center;
}

.at-blog-contributor__avatar {
	width: 48px;
	height: 48px;
	border-radius: var(--at-radius-full);
	overflow: hidden;
	border: 1px solid rgba(0, 0, 0, 0.08);
	flex-shrink: 0;
	background: #d7e3e8;
}

.at-blog-contributor__avatar img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.at-blog-contributor__name {
	color: var(--at-text-primary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 600;
	margin: 0;
}

.at-blog-contributor__role {
	color: var(--at-text-tertiary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 400;
	margin: 0;
}

/* Newsletter sidebar */
.at-blog-subscribe__form {
	display: flex;
	flex-direction: column;
	gap: 16px;
	margin: 0;
}

.at-blog-subscribe__input {
	width: 100%;
	background: var(--at-bg-primary);
	border: 1px solid var(--at-border-primary);
	box-shadow: var(--at-shadow-xs);
	border-radius: var(--at-radius-md);
	padding: 10px 14px;
	color: var(--at-text-primary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-family: inherit;
	outline: none;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.at-blog-subscribe__input::placeholder {
	color: var(--at-text-quaternary);
}

.at-blog-subscribe__input:focus {
	border-color: var(--at-brand-600);
	box-shadow: 0 0 0 4px rgba(224, 79, 22, 0.18);
}

.at-blog-subscribe__btn {
	width: 100%;
	background: var(--at-brand-600);
	color: var(--at-text-on-brand);
	border: 2px solid rgba(255, 255, 255, 0.12);
	border-radius: var(--at-radius-md);
	padding: 10px 16px;
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 600;
	cursor: pointer;
	box-shadow: var(--at-shadow-xs), inset 0 0 0 1px rgba(10, 13, 18, 0.18), inset 0 -2px 0 0 rgba(10, 13, 18, 0.05);
	transition: background 0.15s ease, transform 0.15s ease;
	font-family: inherit;
}

.at-blog-subscribe__btn:hover {
	background: var(--at-brand-700);
}

.at-blog-subscribe__btn:active {
	transform: translateY(1px);
}

/* ---------- Contact Form 7 override (sidebar subscribe) ---------- */

.at-blog-sidebar__block--subscribe .wpcf7,
.at-blog-sidebar__block--subscribe .wpcf7-form {
	margin: 0;
	padding: 0;
}

.at-blog-sidebar__block--subscribe .wpcf7-form > p {
	margin: 0 0 16px;
}

.at-blog-sidebar__block--subscribe .wpcf7-form > p:last-of-type {
	margin-bottom: 0;
}

.at-blog-sidebar__block--subscribe .at-cf7-subscribe {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.at-blog-sidebar__block--subscribe .at-cf7-subscribe br {
	display: none;
}

.at-blog-sidebar__block--subscribe .wpcf7-form-control-wrap {
	display: block;
	width: 100%;
}

.at-blog-sidebar__block--subscribe input.wpcf7-form-control.wpcf7-email,
.at-blog-sidebar__block--subscribe input.wpcf7-email {
	width: 100%;
	background: var(--at-bg-primary);
	border: 1px solid var(--at-border-primary);
	box-shadow: var(--at-shadow-xs);
	border-radius: var(--at-radius-md);
	padding: 10px 14px;
	color: var(--at-text-primary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-family: inherit;
	outline: none;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
	height: auto;
	min-height: 0;
}

.at-blog-sidebar__block--subscribe input.wpcf7-email::placeholder {
	color: var(--at-text-quaternary);
}

.at-blog-sidebar__block--subscribe input.wpcf7-email:focus {
	border-color: var(--at-brand-600);
	box-shadow: 0 0 0 4px rgba(224, 79, 22, 0.18);
}

.at-blog-sidebar__block--subscribe input.wpcf7-form-control.wpcf7-submit,
.at-blog-sidebar__block--subscribe input.wpcf7-submit {
	width: 100%;
	background: var(--at-brand-600);
	color: var(--at-text-on-brand);
	border: 2px solid rgba(255, 255, 255, 0.12);
	border-radius: var(--at-radius-md);
	padding: 10px 16px;
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 600;
	cursor: pointer;
	box-shadow: var(--at-shadow-xs), inset 0 0 0 1px rgba(10, 13, 18, 0.18), inset 0 -2px 0 0 rgba(10, 13, 18, 0.05);
	transition: background 0.15s ease, transform 0.15s ease;
	font-family: inherit;
	text-transform: none;
	letter-spacing: 0;
	height: auto;
	min-height: 0;
}

.at-blog-sidebar__block--subscribe input.wpcf7-submit:hover {
	background: var(--at-brand-700);
}

.at-blog-sidebar__block--subscribe input.wpcf7-submit:active {
	transform: translateY(1px);
}

.at-blog-sidebar__block--subscribe .wpcf7-spinner {
	display: inline-block;
	margin: 0 0 0 8px;
	vertical-align: middle;
}

.at-blog-sidebar__block--subscribe .wpcf7-not-valid-tip {
	margin-top: 6px;
	font-size: var(--at-fs-text-sm);
	color: #d92d20;
}

.at-blog-sidebar__block--subscribe .wpcf7-response-output {
	margin: 12px 0 0;
	padding: 10px 12px;
	border: 1px solid var(--at-border-primary);
	border-radius: var(--at-radius-md);
	font-size: var(--at-fs-text-sm);
	line-height: var(--at-lh-text-sm);
	color: var(--at-text-primary);
	background: var(--at-bg-secondary);
}

.at-blog-sidebar__block--subscribe .wpcf7 form.sent .wpcf7-response-output {
	border-color: #abefc6;
	background: #ecfdf3;
	color: #067647;
}

.at-blog-sidebar__block--subscribe .wpcf7 form.invalid .wpcf7-response-output,
.at-blog-sidebar__block--subscribe .wpcf7 form.unaccepted .wpcf7-response-output,
.at-blog-sidebar__block--subscribe .wpcf7 form.failed .wpcf7-response-output {
	border-color: #fecdca;
	background: #fef3f2;
	color: #b42318;
}

/* ---------- Related posts section ---------- */

.at-blog-related {
	background: var(--at-bg-secondary);
	padding: 64px 0;
}

.at-blog-related__heading {
	color: #101828;
	font-size: var(--at-fs-display-xs);
	line-height: var(--at-lh-display-xs);
	font-weight: 600;
	margin: 0 0 32px;
}

.at-blog-related__grid {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 32px 32px;
}

.at-blog-card {
	display: flex;
	flex-direction: column;
	gap: 24px;
	text-decoration: none;
	color: inherit;
	background: transparent;
}

.at-blog-card:hover .at-blog-card__title {
	color: var(--at-brand-600);
}

.at-blog-card:hover .at-blog-card__image img {
	transform: scale(1.03);
}

.at-blog-card__image {
	position: relative;
	width: 100%;
	aspect-ratio: 280 / 240;
	border-radius: var(--at-radius-md);
	overflow: hidden;
	background: #f2f2f2;
	line-height: 0;
}

.at-blog-card__image img {
	position: relative;
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform 0.4s ease;
}

.at-blog-card__body {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.at-blog-card__meta {
	color: var(--at-brand-600);
	font-size: var(--at-fs-text-sm);
	line-height: var(--at-lh-text-sm);
	font-weight: 600;
	margin: 0;
}

.at-blog-card__title {
	color: var(--at-text-primary);
	font-size: var(--at-fs-display-xs);
	line-height: var(--at-lh-display-xs);
	font-weight: 600;
	margin: 0;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
	text-overflow: ellipsis;
	transition: color 0.15s ease;
}

.at-blog-card__excerpt {
	color: #475467;
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	font-weight: 400;
	margin: 0;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
	text-overflow: ellipsis;
}

.at-blog-related__empty {
	color: var(--at-text-tertiary);
	font-size: var(--at-fs-text-md);
	line-height: var(--at-lh-text-md);
	margin: 0;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1199px) {
	.at-blog-related__grid {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

@media (max-width: 991px) {
	.at-blog-detail {
		--at-container-pad: 24px;
	}

	.at-blog-breadcrumbs__inner {
		padding: 0;
	}

	.at-blog-hero {
		padding: 32px var(--at-container-pad);
	}

	.at-blog-hero__inner {
		padding: 0;
	}

	.at-blog-section {
		padding: 48px 0;
	}

	.at-blog-grid {
		flex-direction: column;
		gap: 48px;
	}

	.at-blog-article {
		max-width: 100%;
		width: 100%;
	}

	.at-blog-sidebar {
		flex-basis: auto;
		width: 100%;
		position: static;
	}

	.at-blog-related__grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (max-width: 599px) {
	.at-blog-detail {
		--at-container-pad: 16px;
	}

	.at-blog-content h2 {
		font-size: 26px;
		line-height: 34px;
	}

	.at-blog-content h3 {
		font-size: 22px;
		line-height: 30px;
	}

	.at-blog-lead {
		font-size: 18px;
		line-height: 28px;
	}

	.at-blog-related__grid {
		grid-template-columns: 1fr;
	}

	.at-blog-hero {
		padding: 24px var(--at-container-pad);
	}

	.at-blog-hero__image {
		aspect-ratio: 16 / 10;
	}

	.at-blog-related__heading {
		margin-bottom: 24px;
	}
}