/**
 * Techflow7 — industrial technology design system
 */

:root {
	--tf-ink: #12161c;
	--tf-ink-soft: #3a4450;
	--tf-steel: #4a6578;
	--tf-signal: #c94e1a;
	--tf-signal-deep: #9e3a10;
	--tf-paper: #eef1f4;
	--tf-paper-2: #e2e7ec;
	--tf-line: rgba(18, 22, 28, 0.12);
	--tf-white: #f8f9fb;
	--font-display: "Syne", sans-serif;
	--font-body: "IBM Plex Sans", sans-serif;
	--font-mono: "IBM Plex Mono", monospace;
	--space: clamp(1rem, 2.5vw, 2rem);
	--max: 72rem;
	--header-h: 4.25rem;
	--ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: var(--font-body);
	font-size: 1.0625rem;
	line-height: 1.6;
	color: var(--tf-ink);
	background:
		radial-gradient(120% 80% at 100% 0%, rgba(74, 101, 120, 0.14), transparent 55%),
		radial-gradient(90% 60% at 0% 40%, rgba(201, 78, 26, 0.06), transparent 50%),
		linear-gradient(180deg, var(--tf-paper) 0%, var(--tf-paper-2) 100%);
	background-attachment: fixed;
	-webkit-font-smoothing: antialiased;
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

a {
	color: inherit;
	text-decoration-thickness: 1px;
	text-underline-offset: 0.2em;
}

a:hover {
	color: var(--tf-signal-deep);
}

.skip-link {
	position: absolute;
	left: -999px;
	top: 0;
	background: var(--tf-ink);
	color: var(--tf-white);
	padding: 0.75rem 1rem;
	z-index: 1000;
}

.skip-link:focus {
	left: 1rem;
	top: 1rem;
}

/* Header */

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	height: var(--header-h);
	backdrop-filter: blur(12px);
	background: rgba(238, 241, 244, 0.82);
	border-bottom: 1px solid var(--tf-line);
	transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.site-header.is-scrolled {
	background: rgba(248, 249, 251, 0.94);
	box-shadow: 0 1px 0 var(--tf-line);
}

.site-header__inner {
	max-width: var(--max);
	margin: 0 auto;
	padding: 0 var(--space);
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1.5rem;
}

.site-brand {
	display: inline-flex;
	align-items: center;
	gap: 0.65rem;
	text-decoration: none;
	font-family: var(--font-display);
	font-weight: 800;
	font-size: 1.25rem;
	letter-spacing: -0.03em;
	color: var(--tf-ink);
}

.site-brand:hover {
	color: var(--tf-ink);
}

.site-brand__mark {
	width: 0.7rem;
	height: 0.7rem;
	background: var(--tf-signal);
	transform: rotate(45deg);
}

.site-brand .custom-logo-link {
	display: block;
	line-height: 0;
}

.site-brand .custom-logo {
	max-height: 2.25rem;
	width: auto;
}

.nav-toggle {
	display: none;
	align-items: center;
	gap: 0.5rem;
	background: transparent;
	border: 1px solid var(--tf-line);
	padding: 0.45rem 0.75rem;
	font-family: var(--font-mono);
	font-size: 0.75rem;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	cursor: pointer;
	color: var(--tf-ink);
}

.nav-toggle__bars {
	width: 1rem;
	height: 1px;
	background: currentColor;
	box-shadow: 0 -4px 0 currentColor, 0 4px 0 currentColor;
}

.site-nav {
	display: flex;
	align-items: center;
	gap: 1.75rem;
}

.nav-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	gap: 1.5rem;
}

.nav-list a {
	text-decoration: none;
	font-size: 0.9375rem;
	font-weight: 500;
	color: var(--tf-ink-soft);
}

.nav-list a:hover {
	color: var(--tf-ink);
}

.site-nav__cta {
	text-decoration: none;
}

/* Buttons */

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 2.85rem;
	padding: 0.7rem 1.35rem;
	font-family: var(--font-body);
	font-size: 0.9375rem;
	font-weight: 600;
	text-decoration: none;
	border: 1px solid transparent;
	cursor: pointer;
	transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.btn:hover {
	transform: translateY(-1px);
}

.btn--primary {
	background: var(--tf-ink);
	color: var(--tf-white);
	border-color: var(--tf-ink);
}

.btn--primary:hover {
	background: var(--tf-signal);
	border-color: var(--tf-signal);
	color: var(--tf-white);
}

.btn--ghost {
	background: transparent;
	color: var(--tf-ink);
	border-color: rgba(18, 22, 28, 0.28);
}

.btn--ghost:hover {
	border-color: var(--tf-ink);
	color: var(--tf-ink);
}

.btn--small {
	min-height: 2.35rem;
	padding: 0.45rem 1rem;
	font-size: 0.875rem;
}

/* Hero — one composition, brand-first, full-bleed visual */

.hero {
	position: relative;
	min-height: calc(100vh - var(--header-h));
	min-height: calc(100dvh - var(--header-h));
	display: grid;
	align-items: end;
	overflow: hidden;
	color: var(--tf-white);
}

.hero__media {
	position: absolute;
	inset: 0;
	z-index: 0;
}

.hero__visual {
	position: absolute;
	inset: 0;
	background:
		linear-gradient(105deg, rgba(18, 22, 28, 0.88) 0%, rgba(18, 22, 28, 0.55) 42%, rgba(18, 22, 28, 0.35) 100%),
		linear-gradient(180deg, transparent 40%, rgba(18, 22, 28, 0.75) 100%),
		repeating-linear-gradient(
			90deg,
			transparent,
			transparent 48px,
			rgba(255, 255, 255, 0.03) 48px,
			rgba(255, 255, 255, 0.03) 49px
		),
		radial-gradient(ellipse 70% 50% at 75% 45%, rgba(74, 101, 120, 0.45), transparent 60%),
		radial-gradient(ellipse 40% 35% at 60% 70%, rgba(201, 78, 26, 0.25), transparent 55%),
		linear-gradient(160deg, #1a2330 0%, #2c3a48 45%, #1e2834 100%);
	transform: scale(1.04);
	animation: hero-drift 18s var(--ease) infinite alternate;
}

.hero__scan {
	position: absolute;
	inset: 0;
	background: linear-gradient(
		180deg,
		transparent 0%,
		rgba(255, 255, 255, 0.04) 50%,
		transparent 100%
	);
	background-size: 100% 220%;
	animation: hero-scan 7s linear infinite;
	pointer-events: none;
	mix-blend-mode: soft-light;
}

.hero__content {
	position: relative;
	z-index: 1;
	max-width: var(--max);
	width: 100%;
	margin: 0 auto;
	padding: clamp(3rem, 10vh, 6rem) var(--space) clamp(3rem, 8vh, 5rem);
}

.hero__brand {
	margin: 0 0 1rem;
	font-family: var(--font-display);
	font-weight: 800;
	font-size: clamp(2.75rem, 8vw, 5.5rem);
	line-height: 0.95;
	letter-spacing: -0.045em;
	opacity: 0;
	transform: translateY(1.25rem);
	animation: rise-in 0.9s var(--ease) 0.15s forwards;
}

.hero__headline {
	margin: 0 0 1.1rem;
	max-width: 18ch;
	font-family: var(--font-display);
	font-weight: 700;
	font-size: clamp(1.45rem, 3.2vw, 2.15rem);
	line-height: 1.2;
	letter-spacing: -0.025em;
	opacity: 0;
	transform: translateY(1.25rem);
	animation: rise-in 0.9s var(--ease) 0.35s forwards;
}

.hero__lede {
	margin: 0 0 1.75rem;
	max-width: 36rem;
	font-size: clamp(1rem, 1.5vw, 1.125rem);
	line-height: 1.55;
	color: rgba(248, 249, 251, 0.82);
	opacity: 0;
	transform: translateY(1.25rem);
	animation: rise-in 0.9s var(--ease) 0.5s forwards;
}

.hero__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	opacity: 0;
	transform: translateY(1.25rem);
	animation: rise-in 0.9s var(--ease) 0.65s forwards;
}

.hero .btn--ghost {
	color: var(--tf-white);
	border-color: rgba(248, 249, 251, 0.35);
}

.hero .btn--ghost:hover {
	border-color: var(--tf-white);
	color: var(--tf-white);
	background: rgba(248, 249, 251, 0.08);
}

.hero .btn--primary {
	background: var(--tf-signal);
	border-color: var(--tf-signal);
}

.hero .btn--primary:hover {
	background: #e05a22;
	border-color: #e05a22;
}

@keyframes rise-in {
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes hero-drift {
	from {
		transform: scale(1.04) translate(0, 0);
	}
	to {
		transform: scale(1.08) translate(-1.5%, 1%);
	}
}

@keyframes hero-scan {
	0% {
		background-position: 0% -40%;
	}
	100% {
		background-position: 0% 140%;
	}
}

/* Sections */

.section {
	padding: clamp(4rem, 10vw, 7rem) 0;
	border-top: 1px solid var(--tf-line);
}

.section__inner {
	max-width: var(--max);
	margin: 0 auto;
	padding: 0 var(--space);
}

.section__inner--split {
	display: grid;
	grid-template-columns: 1.1fr 0.9fr;
	gap: clamp(2rem, 5vw, 4rem);
	align-items: start;
}

.section__inner--cta {
	text-align: center;
	max-width: 40rem;
}

.section__eyebrow {
	margin: 0 0 0.85rem;
	font-family: var(--font-mono);
	font-size: 0.75rem;
	font-weight: 500;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--tf-steel);
}

.section__title {
	margin: 0 0 1rem;
	font-family: var(--font-display);
	font-weight: 700;
	font-size: clamp(1.75rem, 3.5vw, 2.65rem);
	line-height: 1.15;
	letter-spacing: -0.03em;
	max-width: 18ch;
}

.section__title--wide {
	max-width: 28ch;
}

.section__intro {
	margin: 0 0 2.5rem;
	max-width: 38rem;
	color: var(--tf-ink-soft);
	font-size: 1.0625rem;
}

.section--mission {
	background: linear-gradient(90deg, rgba(18, 22, 28, 0.03), transparent 60%);
}

.section--mission .section__title {
	max-width: 32ch;
}

.section--cta {
	background:
		linear-gradient(135deg, rgba(201, 78, 26, 0.08), transparent 45%),
		linear-gradient(180deg, transparent, rgba(74, 101, 120, 0.08));
}

.section--cta .section__title {
	margin-left: auto;
	margin-right: auto;
	max-width: 22ch;
}

.section--cta .section__intro {
	margin-left: auto;
	margin-right: auto;
}

/* Capabilities */

.capability-split {
	display: grid;
	grid-template-columns: 1.35fr 1fr 1fr;
	gap: 0;
	border-top: 1px solid var(--tf-line);
}

.capability {
	padding: 1.75rem 1.5rem 1.75rem 0;
	border-right: 1px solid var(--tf-line);
}

.capability:last-child {
	border-right: none;
	padding-right: 0;
}

.capability:not(:first-child) {
	padding-left: 1.5rem;
}

.capability__weight {
	display: block;
	margin-bottom: 1rem;
	font-family: var(--font-mono);
	font-size: 0.875rem;
	font-weight: 500;
	letter-spacing: 0.06em;
	color: var(--tf-signal);
}

.capability--primary .capability__weight {
	font-size: 1.125rem;
}

.capability__title {
	margin: 0 0 0.65rem;
	font-family: var(--font-display);
	font-size: 1.25rem;
	font-weight: 700;
	letter-spacing: -0.02em;
}

.capability__text {
	margin: 0;
	color: var(--tf-ink-soft);
	font-size: 0.975rem;
}

/* Products */

.product-rail {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 0;
	border-top: 1px solid var(--tf-line);
}

.product-rail__item {
	padding: 1.35rem 1.25rem 1.35rem 0;
	border-bottom: 1px solid var(--tf-line);
	border-right: 1px solid var(--tf-line);
	font-weight: 500;
	font-size: 1rem;
	transition: color 0.25s var(--ease), padding-left 0.35s var(--ease);
}

.product-rail__item:nth-child(3n) {
	border-right: none;
	padding-right: 0;
}

.product-rail__item:hover {
	color: var(--tf-signal-deep);
	padding-left: 0.35rem;
}

/* Stack */

.stack-list {
	list-style: none;
	margin: 0;
	padding: 0;
	border-top: 1px solid var(--tf-line);
}

.stack-list li {
	padding: 1.1rem 0;
	border-bottom: 1px solid var(--tf-line);
	font-family: var(--font-display);
	font-weight: 600;
	font-size: 1.125rem;
	letter-spacing: -0.02em;
	opacity: 0;
	transform: translateX(12px);
}

.stack-list.is-visible li {
	animation: slide-in 0.6s var(--ease) forwards;
}

.stack-list.is-visible li:nth-child(1) { animation-delay: 0.05s; }
.stack-list.is-visible li:nth-child(2) { animation-delay: 0.12s; }
.stack-list.is-visible li:nth-child(3) { animation-delay: 0.19s; }
.stack-list.is-visible li:nth-child(4) { animation-delay: 0.26s; }
.stack-list.is-visible li:nth-child(5) { animation-delay: 0.33s; }
.stack-list.is-visible li:nth-child(6) { animation-delay: 0.4s; }

@keyframes slide-in {
	to {
		opacity: 1;
		transform: translateX(0);
	}
}

/* Brands */

.brand-flow {
	display: grid;
	grid-template-columns: minmax(12rem, 0.85fr) auto minmax(0, 1.4fr);
	gap: 1.5rem;
	align-items: center;
	margin-top: 0.5rem;
}

.brand-flow__hub {
	padding: 1.75rem 0;
	border-top: 2px solid var(--tf-ink);
}

.brand-flow__name {
	display: block;
	font-family: var(--font-display);
	font-weight: 800;
	font-size: 1.5rem;
	letter-spacing: -0.03em;
}

.brand-flow__role {
	display: block;
	margin-top: 0.35rem;
	color: var(--tf-ink-soft);
	font-size: 0.9375rem;
}

.brand-flow__arrow {
	width: 2.5rem;
	height: 1px;
	background: var(--tf-ink);
	position: relative;
}

.brand-flow__arrow::after {
	content: "";
	position: absolute;
	right: 0;
	top: 50%;
	width: 8px;
	height: 8px;
	border-right: 1px solid var(--tf-ink);
	border-top: 1px solid var(--tf-ink);
	transform: translateY(-50%) rotate(45deg);
}

.brand-flow__brands {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 0;
}

.brand-flow__brands li {
	padding: 1.15rem 0;
	border-top: 1px solid var(--tf-line);
}

.brand-flow__brands li:last-child {
	border-bottom: 1px solid var(--tf-line);
}

/* Footer */

.site-footer {
	border-top: 1px solid var(--tf-line);
	background: #d8dee5;
	padding: clamp(3rem, 6vw, 4.5rem) 0 2rem;
}

.site-footer__grid {
	max-width: var(--max);
	margin: 0 auto;
	padding: 0 var(--space);
	display: grid;
	grid-template-columns: 1.4fr 1fr 1fr;
	gap: 2rem;
}

.site-footer__name {
	margin: 0 0 0.5rem;
	font-family: var(--font-display);
	font-weight: 800;
	font-size: 1.5rem;
	letter-spacing: -0.03em;
}

.site-footer__tagline {
	margin: 0;
	max-width: 22rem;
	color: var(--tf-ink-soft);
}

.site-footer__label {
	margin: 0 0 0.75rem;
	font-family: var(--font-mono);
	font-size: 0.7rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--tf-steel);
}

.site-footer__list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.site-footer__list li {
	margin-bottom: 0.4rem;
	color: var(--tf-ink-soft);
}

.site-footer__list a {
	text-decoration: none;
}

.site-footer__list a:hover {
	text-decoration: underline;
}

.site-footer__bottom {
	max-width: var(--max);
	margin: 2.5rem auto 0;
	padding: 1.25rem var(--space) 0;
	border-top: 1px solid var(--tf-line);
}

.site-footer__bottom p {
	margin: 0;
	font-size: 0.875rem;
	color: var(--tf-ink-soft);
}

/* Content pages */

.site-main--content {
	padding: clamp(3rem, 8vw, 5rem) 0;
	min-height: 50vh;
}

.content-wrap {
	max-width: 42rem;
}

.content-entry {
	margin-bottom: 2.5rem;
}

.content-entry__meta {
	margin: 0 0 0.5rem;
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--tf-steel);
}

.content-entry__title {
	margin: 0 0 1rem;
	font-family: var(--font-display);
	font-size: clamp(1.75rem, 3vw, 2.25rem);
	letter-spacing: -0.03em;
}

.content-entry__title a {
	text-decoration: none;
}

.content-entry__body {
	color: var(--tf-ink-soft);
}

/* Reveal on scroll */

.reveal {
	opacity: 0;
	transform: translateY(1.5rem);
	transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-visible {
	opacity: 1;
	transform: translateY(0);
}

/* Responsive */

@media (max-width: 900px) {
	.section__inner--split {
		grid-template-columns: 1fr;
	}

	.capability-split {
		grid-template-columns: 1fr;
	}

	.capability,
	.capability:not(:first-child) {
		padding: 1.5rem 0;
		border-right: none;
		border-bottom: 1px solid var(--tf-line);
	}

	.capability:last-child {
		border-bottom: none;
	}

	.product-rail {
		grid-template-columns: 1fr 1fr;
	}

	.product-rail__item:nth-child(3n) {
		border-right: 1px solid var(--tf-line);
		padding-right: 1.25rem;
	}

	.product-rail__item:nth-child(2n) {
		border-right: none;
		padding-right: 0;
	}

	.brand-flow {
		grid-template-columns: 1fr;
	}

	.brand-flow__arrow {
		width: 1px;
		height: 2rem;
		margin-left: 0.5rem;
	}

	.brand-flow__arrow::after {
		right: auto;
		left: 50%;
		top: auto;
		bottom: 0;
		transform: translateX(-50%) rotate(135deg);
	}

	.site-footer__grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 720px) {
	.nav-toggle {
		display: inline-flex;
	}

	.site-nav {
		position: fixed;
		inset: var(--header-h) 0 auto 0;
		flex-direction: column;
		align-items: stretch;
		gap: 1rem;
		padding: 1.25rem var(--space) 1.5rem;
		background: rgba(248, 249, 251, 0.98);
		border-bottom: 1px solid var(--tf-line);
		transform: translateY(-120%);
		opacity: 0;
		pointer-events: none;
		transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
	}

	.site-nav.is-open {
		transform: translateY(0);
		opacity: 1;
		pointer-events: auto;
	}

	.nav-list {
		flex-direction: column;
		gap: 0.85rem;
	}

	.site-nav__cta {
		align-self: flex-start;
	}

	.product-rail {
		grid-template-columns: 1fr;
	}

	.product-rail__item,
	.product-rail__item:nth-child(3n),
	.product-rail__item:nth-child(2n) {
		border-right: none;
		padding-right: 0;
	}

	.hero__actions {
		flex-direction: column;
		align-items: stretch;
	}

	.hero__actions .btn {
		width: 100%;
	}
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
	}

	.hero__brand,
	.hero__headline,
	.hero__lede,
	.hero__actions,
	.stack-list li,
	.reveal {
		opacity: 1;
		transform: none;
	}
}