/**
 * FixSteel Knowledge Base styles — themed industrial cards.
 */

body.fsp-knowledge {
	--fsk-silver: #c5cdd8;
	--fsk-silver-hi: #e8eef6;
	--fsk-orange: #f97316;
	--fsk-orange-hi: #fdba74;
	--fsk-blue: #3b82f6;
	--fsk-blue-hi: #93c5fd;
	--fsk-gold: #ffcc00;
	--fsk-gold-hi: #ffe566;
	--fsk-b2b: #ca8a04;
	--fsk-b2b-hi: #fde68a;
	/* Body copy — plan-locked readable gray */
	--fsk-body: #dbe3ee;
	--fsk-ink: #dbe3ee;
	--fsk-muted: #94a3b8;
	--fsk-card: rgba(10, 16, 32, 0.72);
	/* Family token aliases (title/badge/link/CTA consume accent) */
	--fsk-accent: var(--fsk-blue);
	--fsk-accent-hi: var(--fsk-blue-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
	margin: 0;
	background: transparent;
	color: var(--fsk-body);
	overflow-x: clip;
	max-width: 100%;
}

.fsp-knowledge-shell {
	max-width: 960px;
	margin: 0 auto;
	padding: 32px 20px 48px;
	font-family: 'Vazirmatn', Tahoma, 'Segoe UI', system-ui, sans-serif;
	color: var(--fsk-body);
	line-height: 1.65;
	background: transparent;
}

body.fsp-knowledge--hub .fsp-knowledge-shell {
	padding-top: 0;
	padding-left: 0;
	padding-right: 0;
	max-width: none;
}

body.fsp-knowledge--hub .fsp-knowledge-hero {
	margin-bottom: 0;
	width: 100%;
	max-width: none;
	padding: 0;
	box-sizing: border-box;
	text-align: center;
	border-right: 0;
	border-bottom: 0;
	align-items: center;
}

body.fsp-knowledge--hub .fsp-knowledge-hero__inner {
	position: relative;
	z-index: 1;
	width: 100%;
	max-width: 960px;
	margin-inline: auto;
	padding: 40px 20px 36px;
	box-sizing: border-box;
	text-align: center;
}

body.fsp-knowledge--hub .fsp-knowledge-hero {
	min-height: 0;
	height: auto;
	max-height: none;
}

body.fsp-knowledge--hub .fsp-knowledge-hero.fsp-mhero--has-image {
	min-height: var(--fsp-module-hero-min);
	height: var(--fsp-module-hero-h);
	max-height: var(--fsp-module-hero-max);
}

body.fsp-knowledge--hub .fsp-knowledge-topics,
body.fsp-knowledge--hub .fsp-knowledge-grid,
body.fsp-knowledge--hub .fsp-knowledge-empty {
	max-width: 1040px;
	margin-inline: auto;
	padding-inline: 20px;
}

body.fsp-knowledge--hub .fsp-knowledge-topics {
	margin-top: 28px;
}

body.fsp-knowledge--hub .fsp-knowledge-grid {
	margin-top: 22px;
	margin-bottom: 56px;
}

body.fsp-knowledge--hub .fsp-knowledge-empty {
	margin-top: 32px;
	margin-bottom: 48px;
}

body.fsp-knowledge--hub .fsp-knowledge-shell > .fsp-brand-trust {
	margin-top: 8px;
}

body.fsp-knowledge--hub .fsp-knowledge-shell {
	padding-bottom: 0;
}

.fsp-knowledge-hero {
	margin-bottom: 24px;
	border-right: 4px solid var(--fsp-gold, #ffcc00);
	padding-right: 16px;
}

.fsp-knowledge-hero h1,
.fsp-knowledge-article h1 {
	margin: 0 0 8px;
	font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.fsp-knowledge-kicker {
	margin: 0 0 14px;
	font-size: 12px;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--fsk-muted);
}

.fsp-knowledge-kicker a {
	color: inherit;
	text-decoration: none;
}

.fsp-knowledge-kicker a:hover {
	color: var(--fsk-silver-hi);
}

/* Topic chips */
.fsp-knowledge-topics {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin-bottom: 20px;
}

.fsp-knowledge-topic {
	display: inline-flex;
	align-items: center;
	padding: 6px 12px;
	border-radius: 999px;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.02em;
	border: 1px solid rgba(255, 255, 255, 0.12);
	background: rgba(15, 23, 42, 0.55);
	color: var(--fsk-body);
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
}

.fsp-knowledge-topic--stainless {
	color: var(--fsk-silver-hi);
	border-color: rgba(197, 205, 216, 0.45);
	background: linear-gradient(135deg, rgba(197, 205, 216, 0.18), rgba(15, 23, 42, 0.55));
	box-shadow: 0 0 18px rgba(197, 205, 216, 0.12);
}

.fsp-knowledge-topic--hardware {
	color: var(--fsk-orange-hi);
	border-color: rgba(249, 115, 22, 0.45);
	background: linear-gradient(135deg, rgba(249, 115, 22, 0.18), rgba(15, 23, 42, 0.55));
	box-shadow: 0 0 18px rgba(249, 115, 22, 0.14);
}

.fsp-knowledge-topic--industry {
	color: var(--fsk-blue-hi);
	border-color: rgba(59, 130, 246, 0.45);
	background: linear-gradient(135deg, rgba(59, 130, 246, 0.16), rgba(15, 23, 42, 0.55));
}

.fsp-knowledge-topic--aisi {
	color: var(--fsk-gold-hi);
	border-color: rgba(255, 204, 0, 0.55);
	background: linear-gradient(135deg, rgba(255, 204, 0, 0.18), rgba(15, 23, 42, 0.55));
	box-shadow: 0 0 18px rgba(255, 204, 0, 0.14);
}

.fsp-knowledge-topic--b2b {
	color: var(--fsk-b2b-hi);
	border-color: rgba(202, 138, 4, 0.5);
	background: linear-gradient(135deg, rgba(202, 138, 4, 0.18), rgba(15, 23, 42, 0.55));
	box-shadow: 0 0 18px rgba(202, 138, 4, 0.12);
}

.fsp-knowledge-tag {
	display: inline-flex;
	padding: 3px 8px;
	border-radius: 999px;
	font-size: 11px;
	font-weight: 700;
	color: var(--fsk-accent-hi, var(--fsk-ink));
	border: 1px solid color-mix(in srgb, var(--fsk-accent, #94a3b8) 40%, transparent);
	background: color-mix(in srgb, var(--fsk-accent, #94a3b8) 12%, transparent);
}

.fsp-knowledge-card__tags,
.fsp-knowledge-article__tags {
	position: relative;
	z-index: 1;
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
}

.fsp-knowledge-card__bg,
.fsp-knowledge-article__bg {
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background-image: var(--fsk-theme-bg);
	background-size: cover;
	background-position: center;
	opacity: 0.38;
	-webkit-mask-image:
		linear-gradient(to right, transparent 0%, #000 14%, #000 86%, transparent 100%),
		linear-gradient(to bottom, transparent 0%, #000 16%, #000 84%, transparent 100%);
	-webkit-mask-composite: source-in;
	mask-image:
		linear-gradient(to right, transparent 0%, #000 14%, #000 86%, transparent 100%),
		linear-gradient(to bottom, transparent 0%, #000 16%, #000 84%, transparent 100%);
	mask-composite: intersect;
}

.fsp-knowledge-card__glass,
.fsp-knowledge-article__glass {
	position: absolute;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background:
		linear-gradient(160deg, rgba(255, 255, 255, 0.1) 0%, rgba(8, 12, 24, 0.55) 48%, rgba(5, 9, 22, 0.82) 100%);
	backdrop-filter: blur(8px) saturate(1.12);
	-webkit-backdrop-filter: blur(8px) saturate(1.12);
}

.fsp-knowledge-card--has-bg,
.fsp-knowledge-article--has-bg {
	isolation: isolate;
}

/* Cards grid */
.fsp-knowledge-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 18px;
}

.fsp-knowledge-card {
	--fsk-accent: var(--fsk-blue);
	--fsk-accent-hi: var(--fsk-blue-hi);
	position: relative;
	display: flex;
	flex-direction: column;
	gap: 10px;
	min-height: 210px;
	padding: 20px 18px 18px;
	border-radius: 16px;
	text-decoration: none;
	color: inherit;
	overflow: hidden;
	isolation: isolate;
	border: 1px solid rgba(255, 255, 255, 0.12);
	background:
		linear-gradient(160deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.02) 38%, rgba(8, 12, 24, 0.72) 100%),
		var(--fsk-card);
	box-shadow:
		0 14px 36px rgba(0, 0, 0, 0.28),
		inset 0 1px 0 rgba(255, 255, 255, 0.14);
	backdrop-filter: blur(14px) saturate(1.15);
	-webkit-backdrop-filter: blur(14px) saturate(1.15);
	transition:
		transform 0.22s ease,
		border-color 0.22s ease,
		box-shadow 0.22s ease;
}

.fsp-knowledge-card:hover {
	transform: translateY(-4px);
	border-color: color-mix(in srgb, var(--fsk-accent) 55%, white 20%);
	box-shadow:
		0 18px 42px rgba(0, 0, 0, 0.34),
		0 0 0 1px color-mix(in srgb, var(--fsk-accent) 28%, transparent),
		0 0 28px color-mix(in srgb, var(--fsk-accent) 18%, transparent),
		inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.fsp-knowledge-card__accent {
	position: absolute;
	top: 0;
	right: 0;
	width: 3px;
	height: 100%;
	border-radius: 0 16px 16px 0;
	background: linear-gradient(180deg, var(--fsk-accent-hi), var(--fsk-accent));
	box-shadow: -2px 0 16px color-mix(in srgb, var(--fsk-accent) 55%, transparent);
	z-index: 1;
}

.fsp-knowledge-card__badge {
	position: relative;
	z-index: 1;
	align-self: flex-start;
	display: inline-flex;
	padding: 4px 10px;
	border-radius: 999px;
	font-size: 11px;
	font-weight: 800;
	letter-spacing: 0.04em;
	color: var(--fsk-badge);
	border: 1px solid color-mix(in srgb, var(--fsk-accent) 40%, transparent);
	background: color-mix(in srgb, var(--fsk-accent) 14%, transparent);
}

.fsp-knowledge-card__title {
	position: relative;
	z-index: 1;
	margin: 0;
	font-size: clamp(1.12rem, 2.2vw, 1.35rem);
	font-weight: 800;
	line-height: 1.45;
	letter-spacing: -0.01em;
	color: var(--fsk-title);
	text-shadow: 0 1px 12px rgba(0, 0, 0, 0.35);
}

.fsp-knowledge-card__excerpt {
	position: relative;
	z-index: 1;
	margin: 0;
	flex: 1 1 auto;
	font-size: 0.92rem;
	line-height: 1.7;
	color: var(--fsk-body);
}

.fsp-knowledge-card__cta {
	position: relative;
	z-index: 1;
	margin-top: 6px;
	font-size: 12px;
	font-weight: 800;
	color: var(--fsk-cta);
	opacity: 0.9;
}

.fsp-knowledge-card__cta::after {
	content: ' ←';
}

.fsp-knowledge-card:hover .fsp-knowledge-card__cta {
	opacity: 1;
}

/* Theme: stainless = silver */
.fsp-knowledge-card--stainless {
	--fsk-accent: #9aa7b8;
	--fsk-accent-hi: var(--fsk-silver-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
	border-color: rgba(197, 205, 216, 0.22);
	background:
		radial-gradient(120% 90% at 0% 0%, rgba(232, 238, 246, 0.14), transparent 55%),
		linear-gradient(160deg, rgba(197, 205, 216, 0.12) 0%, rgba(8, 12, 24, 0.78) 55%),
		var(--fsk-card);
}

.fsp-knowledge-card--stainless .fsp-knowledge-card__title {
	background: linear-gradient(180deg, #f8fafc 0%, #c5cdd8 100%);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
	text-shadow: none;
	filter: drop-shadow(0 1px 8px rgba(0, 0, 0, 0.35));
}

/* Theme: hardware = orange (galvanized) */
.fsp-knowledge-card--hardware {
	--fsk-accent: var(--fsk-orange);
	--fsk-accent-hi: var(--fsk-orange-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
	border-color: rgba(249, 115, 22, 0.28);
	background:
		radial-gradient(120% 90% at 0% 0%, rgba(249, 115, 22, 0.18), transparent 55%),
		linear-gradient(160deg, rgba(249, 115, 22, 0.12) 0%, rgba(8, 12, 24, 0.78) 55%),
		var(--fsk-card);
}

/* Theme: aisi = marine gold (#ffcc00 primary) */
.fsp-knowledge-card--aisi {
	--fsk-accent: var(--fsk-gold);
	--fsk-accent-hi: var(--fsk-gold-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
	border-color: rgba(255, 204, 0, 0.34);
	background:
		radial-gradient(120% 90% at 0% 0%, rgba(255, 204, 0, 0.18), transparent 55%),
		linear-gradient(160deg, rgba(255, 204, 0, 0.12) 0%, rgba(8, 12, 24, 0.78) 55%),
		var(--fsk-card);
}

/* Theme: industry = blue */
.fsp-knowledge-card--industry {
	--fsk-accent: var(--fsk-blue);
	--fsk-accent-hi: var(--fsk-blue-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
	border-color: rgba(59, 130, 246, 0.28);
	background:
		radial-gradient(120% 90% at 0% 0%, rgba(59, 130, 246, 0.16), transparent 55%),
		linear-gradient(160deg, rgba(59, 130, 246, 0.1) 0%, rgba(8, 12, 24, 0.78) 55%),
		var(--fsk-card);
}

/* Theme: b2b = operational gold (distinct from AISI) */
.fsp-knowledge-card--b2b {
	--fsk-accent: var(--fsk-b2b);
	--fsk-accent-hi: var(--fsk-b2b-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
	border-color: rgba(202, 138, 4, 0.4);
	background:
		radial-gradient(120% 90% at 0% 0%, rgba(202, 138, 4, 0.16), transparent 55%),
		linear-gradient(160deg, rgba(202, 138, 4, 0.1) 0%, rgba(8, 12, 24, 0.78) 55%),
		var(--fsk-card);
}

.fsp-knowledge-empty {
	padding: 22px;
	border: 1px dashed rgba(148, 163, 184, 0.4);
	border-radius: 14px;
	background: rgba(15, 23, 42, 0.45);
	color: var(--fsk-muted);
}

.fsp-knowledge-empty p {
	margin: 0;
}

/* Single article */
.fsp-knowledge-shell--article {
	max-width: 820px;
}

.fsp-knowledge-article {
	--fsk-accent: var(--fsk-blue);
	--fsk-accent-hi: var(--fsk-blue-hi);
	position: relative;
	padding: 28px 24px 32px;
	border-radius: 18px;
	border: 1px solid rgba(255, 255, 255, 0.12);
	background:
		linear-gradient(165deg, rgba(255, 255, 255, 0.06), rgba(8, 12, 24, 0.78)),
		rgba(10, 16, 32, 0.72);
	box-shadow:
		0 18px 44px rgba(0, 0, 0, 0.28),
		inset 0 1px 0 rgba(255, 255, 255, 0.12);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
}

.fsp-knowledge-article::before {
	content: '';
	position: absolute;
	top: 0;
	right: 0;
	width: 4px;
	height: 100%;
	border-radius: 0 18px 18px 0;
	background: linear-gradient(180deg, var(--fsk-accent-hi), var(--fsk-accent));
	box-shadow: -2px 0 18px color-mix(in srgb, var(--fsk-accent) 50%, transparent);
}

.fsp-knowledge-article--stainless {
	--fsk-accent: #9aa7b8;
	--fsk-accent-hi: var(--fsk-silver-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
}

.fsp-knowledge-article--hardware {
	--fsk-accent: var(--fsk-orange);
	--fsk-accent-hi: var(--fsk-orange-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
}

.fsp-knowledge-article--aisi {
	--fsk-accent: var(--fsk-gold);
	--fsk-accent-hi: var(--fsk-gold-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
}

.fsp-knowledge-article--industry {
	--fsk-accent: var(--fsk-blue);
	--fsk-accent-hi: var(--fsk-blue-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
}

.fsp-knowledge-article--b2b {
	--fsk-accent: var(--fsk-b2b);
	--fsk-accent-hi: var(--fsk-b2b-hi);
	--fsk-title: var(--fsk-accent-hi);
	--fsk-badge: var(--fsk-accent-hi);
	--fsk-link: var(--fsk-accent-hi);
	--fsk-cta: var(--fsk-accent-hi);
}

.fsp-knowledge-article__header {
	position: relative;
	z-index: 1;
	margin-bottom: 18px;
	padding-bottom: 16px;
	border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.fsp-knowledge-article__badge {
	display: inline-flex;
	margin-bottom: 10px;
	padding: 4px 10px;
	border-radius: 999px;
	font-size: 11px;
	font-weight: 800;
	color: var(--fsk-badge);
	border: 1px solid color-mix(in srgb, var(--fsk-accent) 40%, transparent);
	background: color-mix(in srgb, var(--fsk-accent) 14%, transparent);
}

.fsp-knowledge-article__content {
	position: relative;
	z-index: 1;
	margin: 8px 0 0;
	color: var(--fsk-body);
	font-size: 1.02rem;
}

.fsp-knowledge-article__topics {
	margin: 0 0 10px;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.04em;
	color: var(--fsk-badge);
}

.fsp-knowledge-article__title {
	margin: 0;
	font-size: clamp(1.55rem, 3.2vw, 2.15rem);
	font-weight: 800;
	line-height: 1.35;
	color: var(--fsk-title);
	text-shadow: 0 1px 14px rgba(0, 0, 0, 0.35);
}

.fsp-knowledge-article--stainless .fsp-knowledge-article__title {
	background: linear-gradient(180deg, #f8fafc 0%, #c5cdd8 100%);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
	text-shadow: none;
	filter: drop-shadow(0 1px 10px rgba(0, 0, 0, 0.4));
}

.fsp-knowledge-article__content p {
	margin: 0 0 1.05em;
}

.fsp-knowledge-article__content h2 {
	margin: 1.6em 0 0.55em;
	font-size: 1.2rem;
	font-weight: 800;
	color: var(--fsk-title);
}

.fsp-knowledge-article__content h3 {
	margin: 1.35em 0 0.45em;
	font-size: 1.05rem;
	font-weight: 800;
	color: var(--fsk-body);
}

.fsp-knowledge-article__content a {
	color: var(--fsk-link);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.fsp-knowledge-article__content ul,
.fsp-knowledge-article__content ol {
	margin: 0 0 1.1em;
	padding-right: 1.2em;
}

.fsp-knowledge-article__content li {
	margin-bottom: 0.35em;
}

.fsp-knowledge-article__content code {
	padding: 0.12em 0.4em;
	border-radius: 6px;
	background: rgba(255, 255, 255, 0.08);
	color: var(--fsk-silver-hi);
	font-size: 0.92em;
}

.fsp-knowledge-article__content strong {
	color: #f1f5f9;
}

.fsp-knowledge-product-ref {
	position: relative;
	z-index: 1;
	margin-top: 28px;
	padding: 16px;
	border-right: 4px solid var(--fsk-accent, var(--fsp-orange, #f97316));
	background: color-mix(in srgb, var(--fsk-accent, #f97316) 12%, rgba(15, 23, 42, 0.7));
	border-radius: 10px;
	border: 1px solid color-mix(in srgb, var(--fsk-accent, #f97316) 28%, transparent);
}

.fsp-knowledge-product-ref h2 {
	margin: 0 0 8px;
	font-size: 1rem;
	color: var(--fsk-accent-hi);
}

.fsp-knowledge-product-ref__code {
	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	color: var(--fsk-blue-hi);
}

.fsp-knowledge-notice .fsp-knowledge-shell {
	min-height: 50vh;
	display: grid;
	place-items: center;
}

@media (max-width: 1024px) {
	body.fsp-knowledge--hub .fsp-knowledge-hero__inner {
		padding: 28px var(--fsp-page-pad-x, 16px) 24px;
	}

	body.fsp-knowledge--hub .fsp-knowledge-topics,
	body.fsp-knowledge--hub .fsp-knowledge-grid,
	body.fsp-knowledge--hub .fsp-knowledge-empty {
		padding-inline: var(--fsp-page-pad-x, 16px);
	}

	.fsp-knowledge-grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 640px) {
	body.fsp-knowledge--hub .fsp-knowledge-shell {
		padding: 0;
	}

	body:not(.fsp-knowledge--hub) .fsp-knowledge-shell {
		padding: 24px var(--fsp-page-pad-x, 16px) 40px;
	}

	body.fsp-knowledge--hub .fsp-knowledge-hero {
		padding: 0;
		border-right: 0;
	}

	.fsp-knowledge-card {
		min-height: 0;
		padding: 18px 16px 16px;
	}

	.fsp-knowledge-article {
		padding: 22px 16px 24px;
	}

	.fsp-knowledge-article__title {
		font-size: clamp(1.35rem, 5vw, 1.75rem);
	}
}