:root {
	--base: #15120F;
	--surface: #211B16;
	--surface-tint: #2C2319;
	--contrast: #F7EEE3;
	--contrast-soft: #B9AB9C;
	--dark: #0C0A08;
	--primary: #F97316;
	--primary-light: #FB923C;
	--primary-dark: #EA580C;
	--font-body: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
	--font-heading: 'Inria Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
	--fs-small: 0.875rem;
	--fs-medium: 1rem;
	--fs-large: 1.1875rem;
	--fs-x-large: clamp(1.4rem, 2.6vw, 1.875rem);
	--fs-xx-large: clamp(1.875rem, 4vw, 2.75rem);
	--content: 1000px;
	--wide: 1280px;
	--gutter: clamp(1.25rem, 5vw, 3rem);
	--zenit-header-h: 80px;
	color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
	margin: 0;
	background: var(--base);
	color: var(--contrast);
	font-family: var(--font-body);
	font-size: 1.0625rem;
	line-height: 1.6;
}

h1, h2, h3 {
	font-family: var(--font-heading);
	font-weight: 700;
	letter-spacing: -0.02em;
	color: var(--contrast);
	line-height: 1.2;
	margin: 0;
}

p { margin: 0; }
a { color: var(--primary-light); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }

:focus-visible {
	outline: 2px solid var(--primary-light);
	outline-offset: 3px;
}

.wrap {
	width: 100%;
	max-width: var(--content);
	margin-inline: auto;
	padding-inline: var(--gutter);
}
.wrap-wide {
	width: 100%;
	max-width: var(--wide);
	margin-inline: auto;
	padding-inline: var(--gutter);
}
.narrow {
	max-width: 680px;
	margin-inline: auto;
	text-align: center;
}

/* === header === */
.site-header {
	position: sticky;
	top: 0;
	z-index: 40;
	height: var(--zenit-header-h);
	display: flex;
	align-items: center;
	background: linear-gradient(to bottom, rgba(12, 10, 8, 0.55) 0%, rgba(12, 10, 8, 0) 100%);
}
.site-header-inner {
	width: 100%;
	max-width: var(--wide);
	margin-inline: auto;
	padding-inline: var(--gutter);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
}
.site-brand {
	display: flex;
	align-items: center;
	gap: 10px;
	text-decoration: none;
	color: var(--contrast);
	font-family: var(--font-body);
	font-size: var(--fs-large);
	font-weight: 700;
	padding-bottom: 2px;
	border-bottom: 1px solid transparent;
	transition: color 150ms ease, border-color 150ms ease;
}
.site-brand:hover { color: var(--contrast); border-bottom-color: var(--primary); }
.site-brand img { width: 34px; height: 34px; }

.site-header-right {
	display: flex;
	align-items: center;
	gap: 28px;
}
.site-header-nav {
	display: flex;
	align-items: center;
	gap: 28px;
	margin: 0;
	padding: 0;
	list-style: none;
	font-size: var(--fs-small);
	text-transform: uppercase;
	letter-spacing: 0.06em;
}
.site-header-nav a {
	color: var(--contrast-soft);
	text-decoration: none;
	padding-bottom: 2px;
	border-bottom: 1px solid transparent;
	transition: color 150ms ease, border-color 150ms ease;
}
.site-header-nav a:hover { color: var(--contrast); border-bottom-color: var(--primary); }

.site-header-social {
	display: flex;
	align-items: center;
	gap: 14px;
	margin: 0;
	padding: 0;
	list-style: none;
}
.site-header-social a {
	display: block;
	width: 1.6em;
	height: 1.6em;
	color: var(--contrast);
	transition: color 150ms ease;
}
.site-header-social a:hover { color: var(--primary); }
.site-header-social svg { width: 100%; height: 100%; display: block; }

.nav-toggle {
	display: none;
	background: none;
	border: 1px solid rgba(247, 238, 227, 0.35);
	border-radius: 6px;
	color: var(--contrast);
	padding: 8px 10px;
	cursor: pointer;
	line-height: 0;
}
.nav-toggle svg { width: 22px; height: 22px; }

/* El header flota sobre el hero: main se jala hacia arriba justo su altura. */
main.is-flush { margin-top: calc(-1 * var(--zenit-header-h)); }

/* === buttons === */
.btn {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	padding: 0.667em 1.333em;
	font-family: var(--font-body);
	font-size: var(--fs-medium);
	font-weight: 600;
	line-height: inherit;
	text-decoration: none;
	color: var(--dark);
	background: var(--primary);
	border: 1.5px solid var(--primary);
	border-radius: 6px;
	transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}
.btn:hover {
	color: var(--dark);
	background: var(--primary-dark);
	border-color: var(--primary-dark);
}
.btn-invert {
	background: transparent;
	color: var(--contrast);
	border-color: var(--contrast);
}
.btn-invert:hover {
	background: var(--contrast);
	color: var(--dark);
	border-color: var(--contrast);
}
.btn-whatsapp::before {
	content: '';
	display: inline-block;
	width: 18px;
	height: 18px;
	flex: none;
	background-color: currentColor;
	-webkit-mask: url('../icons/whatsapp-outline.svg') center / contain no-repeat;
	mask: url('../icons/whatsapp-outline.svg') center / contain no-repeat;
}
.btn-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.5rem; }

/* === reveal on scroll === */
/* Visible por defecto; el <script> del <head> agrega "js" al <html> solo si no hay
   prefers-reduced-motion, y reveal.js oculta estos elementos hasta que entran en pantalla. */
html.js .zenit-reveal {
	opacity: 0;
	transform: translateY(28px);
	transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
html.js .zenit-reveal.is-visible {
	opacity: 1;
	transform: none;
}

/* === hero === */
/* Contenedor "chicle": mide más que la pantalla para darle recorrido al scroll.
   Adentro, .zenit-hero queda fijo (sticky) y el JS escala .zenit-hero-bg (zoom). */
.zenit-hero-pin {
	position: relative;
	height: 140vh;
	height: 140svh;
}
.zenit-hero {
	position: sticky;
	top: 0;
	overflow: hidden;
	height: 100vh;
	height: 100svh;
	min-height: 680px;
	display: flex;
	align-items: flex-end;
}
.zenit-hero::before {
	content: '';
	position: absolute;
	inset: 0;
	z-index: 1;
	background-image: linear-gradient(180deg, rgba(12, 10, 8, 0.32) 0%, rgba(12, 10, 8, 0.5) 55%, rgba(12, 10, 8, 0.92) 100%);
	pointer-events: none;
}
.zenit-hero-bg {
	position: absolute;
	inset: 0;
	z-index: 0;
	transform-origin: center bottom;
	will-change: transform;
	background-image: url('../images/hero-mountains.jpg');
	background-size: cover;
	background-position: center bottom;
}
.zenit-hero-video {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	z-index: 0;
	display: block;
}
.zenit-hero-canvas {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	max-width: none;
	margin: 0;
	display: block;
	z-index: 2;
	pointer-events: none;
}
.zenit-hero-content {
	position: relative;
	z-index: 3;
	width: 100%;
	padding-top: 160px;
	padding-bottom: 96px;
	text-align: center;
}
.zenit-hero-content h1 {
	font-size: var(--fs-xx-large);
	max-width: 820px;
	margin: 0 auto 20px;
	text-shadow: 0 2px 6px rgba(41, 20, 8, 0.55), 0 8px 32px rgba(41, 20, 8, 0.4);
}
.zenit-hero-lead {
	max-width: 620px;
	margin: 0 auto 32px;
	color: var(--contrast-soft);
	opacity: 0.95;
	text-shadow: 0 1px 4px rgba(41, 20, 8, 0.5), 0 4px 20px rgba(41, 20, 8, 0.35);
}

/* === sections === */
.zenit-section {
	padding-block: clamp(3rem, 8vw, 5.5rem);
	scroll-margin-top: 40px;
}
.zenit-section.on-surface { background: var(--surface); }
.zenit-eyebrow {
	font-size: var(--fs-small);
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--primary-dark);
	margin-bottom: 4px;
}
.zenit-section h2 {
	font-size: var(--fs-x-large);
	margin-bottom: 1.5rem;
}

/* === services / cards === */
.grid-3 {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 2rem;
	margin-top: 1rem;
}
.grid-2 {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 2rem;
	margin-top: 1rem;
}
.service-card {
	background: var(--surface);
	border: 1px solid var(--surface-tint);
	border-radius: 20px;
	padding: 32px 28px;
	transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}
.on-surface .service-card {
	background: var(--surface);
}
.service-card:hover {
	transform: translateY(-4px);
	box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
	border-color: var(--primary-dark);
}
.service-num {
	font-family: var(--font-heading);
	font-weight: 800;
	font-size: 1.75rem;
	color: var(--primary);
	margin-bottom: 10px;
}
.service-card h3 { font-size: var(--fs-medium); margin-bottom: 1rem; }
.service-card p { color: var(--contrast-soft); }
.service-card .service-link { margin-top: 1rem; }
.service-link a {
	font-weight: 600;
	font-size: var(--fs-small);
	color: var(--primary-light);
	text-decoration: none;
}
.service-link a:hover { color: var(--primary); }

.nfc-inline-list {
	margin-top: 3rem;
	text-align: center;
	color: var(--primary-light);
	font-weight: 600;
	font-size: var(--fs-small);
	letter-spacing: 0.02em;
}
.nfc-inline-note {
	text-align: center;
	color: var(--contrast-soft);
	font-size: var(--fs-small);
	margin-top: 1.5rem;
}
.nfc-inline-list + .nfc-inline-note { margin-top: 0.5rem; }

/* === TAP === */
.tap-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 2rem;
	align-items: center;
}
.tap-grid h2 { margin-bottom: 1rem; }
.tap-grid p.lead { color: var(--contrast-soft); }
.nfc-image img { border-radius: 16px; width: 100%; }
.tap-usecases {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin-top: 1.5rem;
}
.tap-usecase {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 8px 16px;
	border: 1px solid rgba(247, 238, 227, 0.18);
	border-radius: 999px;
	font-size: var(--fs-small);
	color: var(--contrast-soft);
	transition: border-color 150ms ease, color 150ms ease;
}
.tap-usecase::before {
	content: "";
	width: 15px;
	height: 15px;
	flex-shrink: 0;
	background-color: currentColor;
	-webkit-mask-repeat: no-repeat;
	mask-repeat: no-repeat;
	-webkit-mask-size: contain;
	mask-size: contain;
	-webkit-mask-position: center;
	mask-position: center;
}
.tap-usecase:hover { border-color: var(--primary); color: var(--contrast); }
.tap-usecase--menu::before { -webkit-mask-image: url('../icons/menu-outline.svg'); mask-image: url('../icons/menu-outline.svg'); }
.tap-usecase--review::before { -webkit-mask-image: url('../icons/star-outline.svg'); mask-image: url('../icons/star-outline.svg'); }
.tap-usecase--social::before { -webkit-mask-image: url('../icons/at-outline.svg'); mask-image: url('../icons/at-outline.svg'); }
.tap-usecase--whatsapp::before { -webkit-mask-image: url('../icons/whatsapp-outline.svg'); mask-image: url('../icons/whatsapp-outline.svg'); }

/* === portfolio === */
.portfolio-card {
	background: var(--surface);
	border: 1px solid var(--surface-tint);
	border-radius: 20px;
	padding: 24px;
}
.portfolio-num {
	font-family: var(--font-heading);
	font-weight: 700;
	font-size: 1.75rem;
	color: var(--primary-dark);
	opacity: 0.8;
	margin: 0 0 0.5rem;
}
.portfolio-card h3 { font-size: var(--fs-medium); margin-bottom: 0.5rem; }
.portfolio-card p { color: var(--contrast-soft); font-size: var(--fs-small); }

/* === final cta === */
.zenit-final-cta {
	background: var(--dark);
	text-align: center;
}
.zenit-final-cta .narrow { max-width: 560px; }
.zenit-lead { color: var(--contrast-soft); margin-bottom: 1.5rem; }

/* === footer === */
.site-footer {
	background: var(--dark);
	color: var(--contrast-soft);
	padding-block: 2.25rem;
	text-align: center;
	font-size: var(--fs-small);
}
.site-footer .foot-links {
	display: flex;
	justify-content: center;
	gap: 24px;
	margin-bottom: 0.67rem;
	flex-wrap: wrap;
}
.site-footer a { color: var(--contrast-soft); text-decoration: none; }
.site-footer a:hover { color: var(--primary-light); }

/* === responsive === */
@media (max-width: 960px) {
	.site-header-nav { gap: 18px; }
}
@media (max-width: 781px) {
	.grid-3, .grid-2, .tap-grid { grid-template-columns: 1fr; }
	.nav-toggle { display: inline-flex; }
	.site-header-nav {
		display: none;
		position: absolute;
		top: var(--zenit-header-h);
		left: 0;
		right: 0;
		flex-direction: column;
		align-items: flex-start;
		gap: 18px;
		padding: 20px var(--gutter) 24px;
		background: var(--dark);
		border-bottom: 1px solid var(--surface-tint);
	}
	.site-header-nav.is-open { display: flex; }
	.site-header-right { gap: 16px; }
}
@media (max-width: 640px) {
	.zenit-hero { min-height: 520px; align-items: center; }
	.zenit-hero-content { padding-top: 96px; padding-bottom: 48px; }
}

@media (prefers-reduced-motion: reduce) {
	html.js .zenit-reveal {
		opacity: 1;
		transform: none;
		transition: none;
	}
	.service-card, html { transition: none !important; scroll-behavior: auto !important; }
	.service-card:hover { transform: none !important; }
}