/* ============================================================================
   Homepage Features — Brutalist Tech (Cards 2Col)
   Section ID: tmpl-brutalist-tech--features--cards-2col--0
   Masonry, full-bleed, 3 columns, min-height 70vh. Mesh-gradient dark canvas
   with radial-dark overlay, circle-outline + aurora-glow decoration. Slide-down
   entrance, sticky intro, border-glow card hover. All values from design tokens.
   ============================================================================ */

.bt-feat-c2 {
	position: relative;
	width: 100%;
	min-height: 70vh;
	padding: var(--space-section) 0;
	overflow: hidden;
	isolation: isolate;
	/* Mesh-gradient background over the brand's violet-black canvas. */
	background-color: var(--color-canvas);
	background-image:
		radial-gradient(42% 55% at 12% 8%, rgba(var(--color-primary-rgb), 0.38) 0%, transparent 60%),
		radial-gradient(38% 50% at 88% 18%, rgba(var(--color-accent-rgb), 0.22) 0%, transparent 62%),
		radial-gradient(48% 60% at 78% 96%, rgba(76, 29, 149, 0.5) 0%, transparent 60%),
		radial-gradient(40% 55% at 22% 92%, rgba(var(--color-primary-rgb), 0.28) 0%, transparent 58%);
}

/* Radial-dark overlay — deepens edges so text stays legible over the mesh. */
.bt-feat-c2__overlay {
	position: absolute;
	inset: 0;
	z-index: -1;
	pointer-events: none;
	background: radial-gradient(120% 90% at 50% 40%, transparent 0%, rgba(13, 10, 19, 0.55) 78%, rgba(13, 10, 19, 0.85) 100%);
}

/* Decorative: circle-outline. */
.bt-feat-c2__circle {
	position: absolute;
	z-index: -1;
	top: -160px;
	right: -160px;
	width: 460px;
	height: 460px;
	border: 1px solid rgba(var(--color-primary-rgb), 0.35);
	border-radius: var(--radius-full);
	pointer-events: none;
}

.bt-feat-c2__circle::after {
	content: "";
	position: absolute;
	inset: 60px;
	border: 1px solid rgba(var(--color-accent-rgb), 0.22);
	border-radius: var(--radius-full);
}

/* Decorative: aurora-glow. */
.bt-feat-c2__aurora {
	position: absolute;
	z-index: -1;
	bottom: -140px;
	left: -120px;
	width: 520px;
	height: 340px;
	pointer-events: none;
	background: radial-gradient(closest-side, rgba(var(--color-accent-rgb), 0.30), transparent 70%);
	filter: blur(48px);
	opacity: 0.9;
}

/* Centered container. */
.bt-feat-c2__inner {
	position: relative;
	z-index: 1;
	max-width: var(--container-wide);
	margin: 0 auto;
	padding: 0 var(--container-padding);
}

/* ---- Intro header (sticky scroll) ----------------------------------------- */
.bt-feat-c2__head {
	position: sticky;
	top: var(--nav-height);
	z-index: 2;
	max-width: 760px;
	margin: 0 auto var(--space-12);
	text-align: center;
	padding: var(--space-4) 0;
}

.bt-feat-c2__eyebrow {
	margin: 0 0 var(--space-4);
	font-family: var(--font-body);
	font-size: var(--text-xs);
	font-weight: var(--weight-semibold);
	letter-spacing: var(--letter-wide);
	text-transform: uppercase;
	color: var(--color-accent-400);
}

.bt-feat-c2__heading {
	margin: 0 0 var(--space-5);
	font-family: var(--font-heading);
	/* 7xl heading — clamps large for the display treatment the spec calls for. */
	font-size: clamp(2.75rem, 6vw, 4.75rem);
	font-weight: 900;
	line-height: var(--leading-tight);
	letter-spacing: 0.02em;
	color: var(--color-text-on-dark);
}

.bt-feat-c2__subheading {
	margin: 0 auto;
	max-width: 60ch;
	font-family: var(--font-body);
	font-size: var(--text-xl);
	line-height: var(--leading-normal);
	color: var(--color-body-on-dark);
}

/* ---- Masonry grid (CSS columns) ------------------------------------------- */
.bt-feat-c2__grid {
	list-style: none;
	margin: 0;
	padding: 0;
	column-count: 3;
	column-gap: var(--space-6);
}

.bt-feat-c2__card {
	position: relative;
	break-inside: avoid;
	margin: 0 0 var(--space-6);
	padding: var(--space-6);
	background-color: var(--color-surface-card);
	border: 1px solid var(--color-hairline);
	border-radius: var(--radius-2xl);
	box-shadow: var(--shadow-xl);
	transition:
		transform var(--duration-fast) var(--ease-out),
		border-color var(--duration-normal) var(--ease-out),
		box-shadow var(--duration-normal) var(--ease-out);
}

/* Card hover: border-glow. */
.bt-feat-c2__card:hover,
.bt-feat-c2__card:focus-within {
	transform: translateY(-2px);
	border-color: rgba(var(--color-primary-rgb), 0.7);
	box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.bt-feat-c2__media {
	margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-5);
	border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
	overflow: hidden;
	aspect-ratio: 16 / 10;
	background-color: var(--color-canvas-deep);
}

.bt-feat-c2__media-img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform var(--duration-slow) var(--ease-out);
}

.bt-feat-c2__card--media:hover .bt-feat-c2__media-img {
	transform: scale(1.04);
}

.bt-feat-c2__icon-wrap {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 52px;
	height: 52px;
	margin-bottom: var(--space-4);
	border-radius: var(--radius-lg);
	background: rgba(var(--color-primary-rgb), 0.16);
	border: 1px solid rgba(var(--color-primary-rgb), 0.32);
	color: var(--color-primary-400);
}

.bt-feat-c2__icon {
	width: 26px;
	height: 26px;
}

.bt-feat-c2__card-title {
	margin: 0 0 var(--space-2);
	font-family: var(--font-heading);
	font-size: var(--text-xl);
	font-weight: var(--weight-bold);
	letter-spacing: var(--letter-tight);
	color: var(--color-text-on-dark);
}

.bt-feat-c2__card-text {
	margin: 0;
	font-family: var(--font-body);
	font-size: var(--text-base);
	line-height: var(--leading-normal);
	color: var(--color-body-on-dark);
}

/* ---- CTA (no hover motion per spec) --------------------------------------- */
.bt-feat-c2__cta-row {
	margin-top: var(--space-12);
	text-align: center;
}

.bt-feat-c2__cta {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.9rem 2rem;
	font-family: var(--font-body);
	font-size: var(--text-base);
	font-weight: var(--weight-semibold);
	text-decoration: none;
	color: var(--color-on-accent);
	background-color: var(--color-accent-500);
	border: 1px solid transparent;
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-glow-accent);
}

.bt-feat-c2__cta:focus-visible {
	outline: 2px solid var(--color-accent-300);
	outline-offset: 3px;
}

/* ---- Entrance: slide-down (600ms, 0ms stagger) ---------------------------- */
[data-bt-feat-c2-animate] {
	opacity: 0;
	transform: translateY(-24px);
	transition:
		opacity var(--duration-slower, 700ms) var(--ease-out),
		transform var(--duration-slower, 700ms) var(--ease-out);
	transition-duration: 600ms;
}

[data-bt-feat-c2-animate].is-visible {
	opacity: 1;
	transform: translateY(0);
}

/* ---- Responsive: tablet = sidebar-collapse (2 col), mobile = stack -------- */
@media (max-width: 1024px) {
	.bt-feat-c2__grid {
		column-count: 2;
	}
	.bt-feat-c2__head {
		position: static;
	}
}

@media (max-width: 640px) {
	.bt-feat-c2__grid {
		column-count: 1;
	}
	.bt-feat-c2__circle,
	.bt-feat-c2__aurora {
		display: none;
	}
}

/* Respect reduced motion — reveal immediately, no transforms. */
@media (prefers-reduced-motion: reduce) {
	[data-bt-feat-c2-animate] {
		opacity: 1;
		transform: none;
		transition: none;
	}
	.bt-feat-c2__media-img,
	.bt-feat-c2__card {
		transition: none;
	}
}