: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: 'Chillax', -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;
}

@font-face {
	font-family: 'Chillax';
	src: url('../fonts/Chillax-Variable.woff2') format('woff2-variations'),
	     url('../fonts/Chillax-Variable.woff2') format('woff2');
	font-weight: 200 700;
	font-display: swap;
	font-style: normal;
}

* { 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;
	/* Sin fondo ni desenfoque (pedido de Andrés, 2026-10-02): el header flota sobre
	   las montañas sin marcar una franja que divida la página. nav.js lo esconde al
	   bajar y lo muestra al subir, para que no se encime con el contenido. */
	background: transparent;
	transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.site-header.is-hidden { transform: translateY(-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);
}
/* Botón con brillo especular (efectos.js): una línea de luz recorre el borde
   apuntando hacia el mouse; sin mouse gira sola, lento. */
@property --sb-ang { syntax: '<angle>'; inherits: true; initial-value: 135deg; }
.btn-specular {
	position: relative;
	--sb-luz: 0;
	border-color: rgba(247, 238, 227, 0.32);
	border-radius: 999px;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}
.btn-specular:active { transform: scale(0.97); }
.btn-specular-brillo {
	position: absolute;
	inset: -1.5px;
	border-radius: inherit;
	padding: 1.5px;
	pointer-events: none;
	opacity: var(--sb-luz);
	background: conic-gradient(from var(--sb-ang),
		#fff 0deg, rgba(255, 255, 255, 0) 38deg, rgba(255, 255, 255, 0) 142deg,
		#fff 180deg, rgba(255, 255, 255, 0) 218deg, rgba(255, 255, 255, 0) 322deg, #fff 360deg);
	-webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
	-webkit-mask-composite: xor;
	mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
	filter: drop-shadow(0 0 3px rgba(255, 255, 255, 0.6));
}
.btn-specular.is-girando { --sb-luz: 1; animation: sb-girar 6s linear infinite; }
@keyframes sb-girar { to { --sb-ang: 495deg; } }

.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;
}

/* === fondo fijo (descenso al valle) === */
/* Detrás de toda la página. hero-descenso.js dibuja en el canvas los cuadros del video
   (Flow) según el scroll: la cámara baja durante el hero y "Tres formas de crecer"; al
   entrar "Cómo trabajamos" aparece la versión desenfocada y se queda para el resto. */
.zenit-fondo {
	position: fixed;
	inset: 0;
	z-index: 0;
	overflow: hidden;
	pointer-events: none;
	background: var(--dark) url('../images/descenso/compu/f_001.webp') center / cover no-repeat;
}
.zenit-fondo canvas,
.zenit-fondo-blur {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	display: block;
}
.zenit-fondo-blur { object-fit: cover; opacity: 0; transform: scale(1.06); }
.zenit-fondo-velo { position: absolute; inset: 0; background: var(--dark); opacity: 0; }
.zenit-fondo-sombra {
	position: absolute;
	inset: 0;
	background: radial-gradient(120% 70% at 50% 100%, rgba(8, 6, 5, 0.72), rgba(8, 6, 5, 0) 70%);
}
.zenit-fondo-grano {
	position: absolute;
	inset: 0;
	background: url('../images/grano.png');
	opacity: 0.5;
	mix-blend-mode: overlay;
}
.site-header, main, .site-footer { position: relative; z-index: 1; }
.site-header { position: sticky; z-index: 40; }

/* === hero === */
.zenit-hero {
	position: relative;
	height: 100vh;
	height: 100svh;
	min-height: 680px;
	display: flex;
	align-items: flex-end;
}
.zenit-hero-content {
	position: relative;
	z-index: 3;
	width: 100%;
	padding-top: 160px;
	padding-bottom: 96px;
	text-align: center;
}
/* Título grande en Chillax y bajada en la fuente del sistema, como en la página de prueba. */
.zenit-hero-content h1 {
	font-size: clamp(36px, 5.4vw, 74px);
	font-weight: 600;
	line-height: 1.04;
	max-width: 14ch;
	margin: 0 auto 20px;
}
.zenit-hero-lead {
	max-width: 46ch;
	margin: 0 auto 32px;
	font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
	font-size: clamp(16px, 1.4vw, 19px);
	line-height: 1.5;
	color: #cdbfb0;
}

/* === sections === */
.zenit-section {
	padding-block: clamp(3rem, 8vw, 5.5rem);
	scroll-margin-top: 40px;
}
/* Más recorrido en "Tres formas de crecer": la cámara sigue bajando mientras se lee. */
#servicios { padding-block: 18vh 22vh; }
.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;
}
/* Semitransparente: se ven las montañas detrás pero el texto se lee. */
.service-card {
	background: rgba(21, 18, 15, 0.66);
	border: 1px solid rgba(247, 238, 227, 0.12);
	border-radius: 20px;
	padding: 32px 28px;
	transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}
.service-card:hover {
	transform: translateY(-4px);
	box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
}
/* Brillo naranja en el borde (efectos.js): un cono que apunta hacia el mouse,
   más fuerte cuanto más cerca del borde. Sin mouse, un barrido al aparecer. */
.zenit-brillo { position: relative; isolation: isolate; --cercania: 0; --angulo: 45deg; }
.zenit-brillo-cono, .zenit-brillo-anillo, .zenit-brillo-luz {
	position: absolute;
	border-radius: inherit;
	pointer-events: none;
}
.zenit-brillo-cono {
	inset: -40px;
	z-index: 2;
	padding: 40px;
	border-radius: 60px;
	opacity: calc((var(--cercania) - 30) / 70);
	transition: opacity 0.25s ease-out;
	-webkit-mask-image: conic-gradient(from var(--angulo) at center, #000 4%, transparent 14%, transparent 86%, #000 96%);
	mask-image: conic-gradient(from var(--angulo) at center, #000 4%, transparent 14%, transparent 86%, #000 96%);
}
.zenit-brillo:not(:hover):not(.is-barrido) .zenit-brillo-cono { opacity: 0; transition-duration: 0.75s; }
.zenit-brillo-anillo, .zenit-brillo-luz { inset: 40px; border-radius: 20px; }
.zenit-brillo-anillo {
	padding: 1.5px;
	background: linear-gradient(120deg, #FDBA74, var(--primary) 45%, var(--primary-dark));
	-webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
	-webkit-mask-composite: xor;
	mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
}
.zenit-brillo-luz {
	box-shadow:
		inset 0 0 6px 0 rgba(249, 115, 22, 0.45),
		inset 0 0 22px 2px rgba(249, 115, 22, 0.18),
		0 0 6px 0 rgba(249, 115, 22, 0.5),
		0 0 18px 0 rgba(249, 115, 22, 0.32),
		0 0 44px 4px rgba(249, 115, 22, 0.16);
	mix-blend-mode: plus-lighter;
}

/* Títulos que se revelan palabra por palabra (efectos.js). */
.zenit-palabra { display: inline-block; }

.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); }
/* Disco NFC que gira como moneda (moneda-nfc.js agrega el canto con grosor). */
.zenit-moneda-escena { perspective: 1200px; display: grid; place-items: center; }
.zenit-moneda-inclina { width: min(360px, 72vw); aspect-ratio: 1; transform-style: preserve-3d; }
.zenit-moneda {
	position: relative;
	width: 100%;
	height: 100%;
	padding: 0;
	border: 0;
	border-radius: 50%;
	background: none;
	cursor: pointer;
	transform-style: preserve-3d;
}
.zenit-moneda:focus-visible { outline-offset: 8px; }
.zenit-moneda-cara, .zenit-moneda-canto { position: absolute; inset: 0; border-radius: 50%; }
.zenit-moneda-cara { overflow: hidden; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.zenit-moneda-cara img { width: 100%; height: 100%; }
.zenit-moneda-cara::after {
	content: '';
	position: absolute;
	inset: 0;
	border-radius: 50%;
	background: linear-gradient(135deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0) 42%);
	mix-blend-mode: screen;
	pointer-events: none;
}
/* Sin JS el reverso queda detrás del frente. */
.zenit-moneda-reverso { transform: rotateY(180deg); }
.zenit-moneda-sombra {
	width: 62%;
	height: 26px;
	margin-top: 34px;
	border-radius: 50%;
	background: radial-gradient(closest-side, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0));
}
.zenit-moneda-pista { margin-top: 14px; color: var(--contrast-soft); font-size: var(--fs-small); text-align: center; }
.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 === */
/* Sin overflow:hidden para que el brillo del borde salga de la tarjeta;
   la imagen redondea sus propias esquinas de arriba. */
.portfolio-card {
	background: var(--surface);
	border: 1px solid var(--surface-tint);
	border-radius: 20px;
}
.portfolio-thumb {
	border-radius: 19px 19px 0 0;
	display: block;
	width: 100%;
	aspect-ratio: 960 / 540;
	object-fit: cover;
	background: var(--surface-tint);
}
.portfolio-body { padding: 24px; }
.portfolio-body .service-link { margin-top: 0.75rem; }
.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 { 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; }
}
/* Pantallas verticales (celular): cuadros 9:16 y grano más suave. */
@media (max-aspect-ratio: 1/1) {
	.zenit-fondo { background-image: url('../images/descenso/movil/f_001.webp'); }
	.zenit-fondo-grano { opacity: 0.28; }
	#servicios { padding-block: 14vh 16vh; }
}
@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; }
}