/* AI Related Posts — Frontend (BEM: airp-) */

.airp-related {
	--airp-accent: #2271b1;
	--airp-text: var(--color-text, #0a0a0a);
	--airp-muted: var(--color-muted, #4a4a52);
	--airp-border: var(--color-border, #e5e7eb);
	--airp-surface: var(--color-white, #fff);
	--airp-radius: var(--radius-sm, 12px);
	--airp-shadow: var(--shadow-soft, 0 2px 8px rgba(0, 0, 0, 0.06));
	--airp-shadow-hover: var(--shadow, 0 8px 24px rgba(0, 0, 0, 0.08));
	margin: 3rem 0 0;
	padding: 2rem 0 0;
	border-top: 2px solid color-mix(in srgb, var(--airp-border) 88%, var(--airp-accent) 12%);
	clear: both;
}

.airp-related__header {
	margin-bottom: 1.75rem;
}

.airp-related__title {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
	margin: 0;
	line-height: 1.25;
	color: var(--airp-text);
}

.airp-related__title-text {
	font-size: clamp(1.35rem, 2.8vw, 1.75rem);
	font-weight: 700;
	letter-spacing: -0.01em;
}

.airp-related__title-icon {
	display: inline-block;
	width: 5px;
	min-height: 1.35em;
	margin-top: 0.15em;
	background: var(--airp-accent);
	border-radius: 3px;
	flex-shrink: 0;
}

.airp-related__subtitle {
	margin: 0.55rem 0 0 calc(5px + 0.75rem);
	font-size: 0.95rem;
	color: var(--airp-muted);
	line-height: 1.5;
	max-width: 52ch;
}

/* Grid layouts */
.airp-related__grid {
	display: grid;
	gap: 1.5rem;
	align-items: stretch;
}

.airp-related__grid--cols-1 { grid-template-columns: 1fr; }
.airp-related__grid--cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.airp-related__grid--cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.airp-related__grid--cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Cards */
.airp-related__card {
	display: flex;
	flex-direction: column;
	height: 100%;
	border: 1px solid var(--airp-border);
	border-radius: var(--airp-radius);
	overflow: hidden;
	background: var(--airp-surface);
	box-shadow: var(--airp-shadow);
	transition: box-shadow 0.22s ease, transform 0.22s ease, border-color 0.22s ease;
}

.airp-related__card:hover {
	box-shadow: var(--airp-shadow-hover);
	transform: translateY(-2px);
	border-color: color-mix(in srgb, var(--airp-accent) 28%, var(--airp-border));
}

.airp-related__link {
	display: flex;
	flex-direction: column;
	flex: 1;
	min-height: 100%;
	text-decoration: none;
	color: inherit;
}

.airp-related__image-wrap {
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: color-mix(in srgb, var(--airp-border) 55%, var(--airp-surface));
	position: relative;
	flex-shrink: 0;
}

.airp-related__image {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform 0.35s ease;
}

.airp-related__card:hover .airp-related__image {
	transform: scale(1.03);
}

.airp-related__image-placeholder {
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: color-mix(in srgb, var(--airp-muted) 55%, transparent);
	background: linear-gradient(
		135deg,
		color-mix(in srgb, var(--airp-border) 40%, var(--airp-surface)) 0%,
		color-mix(in srgb, var(--airp-border) 70%, var(--airp-surface)) 100%
	);
}

.airp-related__content {
	display: flex;
	flex-direction: column;
	flex: 1;
	gap: 0.45rem;
	padding: 1rem 1.2rem 1.2rem;
	min-height: 0;
}

.airp-related__category {
	display: inline-flex;
	align-self: flex-start;
	padding: 0.22rem 0.6rem;
	border-radius: var(--radius-pill, 999px);
	background: color-mix(in srgb, var(--airp-accent) 12%, transparent);
	color: var(--airp-accent);
	font-size: 0.68rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	line-height: 1.3;
}

.airp-related__card-title {
	font-size: clamp(1rem, 1.6vw, 1.12rem);
	font-weight: 700;
	margin: 0;
	line-height: 1.35;
	color: var(--airp-text);
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
	transition: color 0.2s ease;
}

.airp-related__link:hover .airp-related__card-title {
	color: var(--airp-accent);
}

.airp-related__excerpt {
	font-size: 0.9rem;
	line-height: 1.55;
	color: var(--airp-muted);
	margin: 0;
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
	flex: 1 0 auto;
}

.airp-related__meta {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
	margin-top: auto;
	padding-top: 0.8rem;
	border-top: 1px solid color-mix(in srgb, var(--airp-border) 82%, transparent);
}

.airp-related__date {
	font-size: 0.82rem;
	color: var(--airp-muted);
	white-space: nowrap;
}

.airp-related__read-more {
	font-size: 0.82rem;
	font-weight: 600;
	color: var(--airp-accent);
	white-space: nowrap;
	opacity: 0.72;
	transition: opacity 0.2s ease, transform 0.2s ease;
}

.airp-related__card:hover .airp-related__read-more {
	opacity: 1;
	transform: translateX(2px);
}

/* List layout */
.airp-related--list .airp-related__grid {
	grid-template-columns: 1fr;
	gap: 1rem;
}

.airp-related--list .airp-related__card {
	height: auto;
}

.airp-related--list .airp-related__link {
	display: grid;
	grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
	gap: 0;
}

.airp-related--list .airp-related__image-wrap {
	aspect-ratio: 16 / 10;
	height: 100%;
	min-height: 130px;
}

.airp-related--list .airp-related__content {
	justify-content: center;
}

/* Compact layout */
.airp-related--compact .airp-related__grid {
	grid-template-columns: 1fr;
	gap: 0;
	border: 1px solid var(--airp-border);
	border-radius: var(--airp-radius);
	overflow: hidden;
}

.airp-related--compact .airp-related__card {
	border: none;
	border-radius: 0;
	border-bottom: 1px solid var(--airp-border);
	box-shadow: none;
	height: auto;
}

.airp-related--compact .airp-related__card:last-child {
	border-bottom: none;
}

.airp-related--compact .airp-related__link {
	display: grid;
	grid-template-columns: 72px 1fr;
}

.airp-related--compact .airp-related__image-wrap {
	aspect-ratio: 1;
	height: 72px;
}

.airp-related--compact .airp-related__excerpt,
.airp-related--compact .airp-related__read-more {
	display: none;
}

.airp-related--compact .airp-related__meta {
	border-top: none;
	padding-top: 0;
	margin-top: 0.35rem;
}

.airp-related--compact .airp-related__card:hover {
	transform: none;
	background: color-mix(in srgb, var(--airp-border) 24%, var(--airp-surface));
}

/* Responsive */
@media (max-width: 768px) {
	.airp-related {
		margin: 2rem 0 0;
		padding-top: 1.5rem;
	}

	.airp-related__subtitle {
		margin-left: 0;
	}

	.airp-related__grid--cols-2,
	.airp-related__grid--cols-3,
	.airp-related__grid--cols-4 {
		grid-template-columns: 1fr;
	}

	.airp-related--list .airp-related__link {
		grid-template-columns: 1fr;
	}

	.airp-related--list .airp-related__image-wrap {
		min-height: 0;
		aspect-ratio: 16 / 9;
	}

	.airp-related__read-more {
		opacity: 1;
	}
}

@media (min-width: 769px) and (max-width: 1024px) {
	.airp-related__grid--cols-3,
	.airp-related__grid--cols-4 {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

/* Fade-in animation */
.airp-related.airp-related--loaded .airp-related__card {
	animation: airp-fade-up 0.45s ease both;
}

.airp-related.airp-related--loaded .airp-related__card:nth-child(2) { animation-delay: 0.06s; }
.airp-related.airp-related--loaded .airp-related__card:nth-child(3) { animation-delay: 0.12s; }
.airp-related.airp-related--loaded .airp-related__card:nth-child(4) { animation-delay: 0.18s; }
.airp-related.airp-related--loaded .airp-related__card:nth-child(5) { animation-delay: 0.24s; }

@keyframes airp-fade-up {
	from { opacity: 0; transform: translateY(12px); }
	to { opacity: 1; transform: translateY(0); }
}