/* ============================================================
   Nutech · Robots de aseo en acción — hoja de estilos única
   Orden: tokens → modo oscuro → reset → tipografía → botones →
   header → secciones con video → hero → métricas → bloques →
   contacto → footer → animaciones → menú móvil → responsive →
   preferencias del usuario → print
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  /* Marca — superficie y acento gráfico. Nunca texto sobre blanco. */
  --brand-yellow:#FCD90D;
  --brand-lime:#E2DE02;
  --brand-lime-soft:#D6DD56;
  --brand-coral:#F08484;
  --brand-gray:#9D9B9A;

  /* Derivados accesibles — todo el texto pasa por aquí */
  --ink:#23262B;
  --ink-soft:#6B6968;
  --ink-faint:#8C8A88;
  --coral-deep:#B04F4F;

  /* Superficies */
  --surface:#FFFFFF;
  --surface-warm:#FAF9F5;
  --surface-tint:#FEF9E3;
  --surface-raise:#FFFFFF;
  --line:#E7E5DE;
  --line-strong:#D6D3CA;

  /* Sobre imagen */
  --on-media:#FFFFFF;
  --on-media-soft:rgba(255,255,255,.82);

  --shadow-sm:0 2px 10px -4px rgba(35,38,43,.18);
  --shadow-md:0 18px 44px -28px rgba(35,38,43,.34);
  --shadow-lg:0 34px 70px -40px rgba(35,38,43,.46);

  /* Movimiento — set cerrado, dos curvas, tres duraciones */
  --ease-soft:cubic-bezier(.25,.8,.25,1);
  --ease-out:cubic-bezier(.19,1,.22,1);
  --t-fast:.2s; --t-mid:.4s; --t-slow:.75s;

  --gutter:clamp(20px,4.5vw,72px);
  --max:1360px;
  --header-h:74px;

  color-scheme:light;
}

/* ---------- 2. Modo oscuro: solo redefine tokens ---------- */
[data-theme="dark"]{
  --ink:#F2F0EC;
  --ink-soft:#B9B6B1;
  --ink-faint:#8C8A88;
  --coral-deep:#E89B9B;
  --surface:#17191D;
  --surface-warm:#1C1F24;
  --surface-tint:#22211A;
  --surface-raise:#22252B;
  --line:#33363D;
  --line-strong:#44484F;
  --shadow-sm:0 2px 10px -4px rgba(0,0,0,.5);
  --shadow-md:0 18px 44px -28px rgba(0,0,0,.62);
  --shadow-lg:0 34px 70px -40px rgba(0,0,0,.72);
  color-scheme:dark;
}

/* ---------- 3. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font:400 16px/1.6 "Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img,video{max-width:100%;display:block}
ul{list-style:none;margin:0;padding:0}
a{color:inherit}
button{font:inherit;cursor:pointer}

.wrap{max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand-yellow);color:#000;font-weight:800;
  padding:12px 22px;text-decoration:none;
}
.skip-link:focus{left:12px;top:12px}

:focus-visible{outline:3px solid var(--brand-yellow);outline-offset:3px}

/* ---------- 4. Tipografía ---------- */
h1,h2,h3{
  text-transform:uppercase;
  font-weight:800;
  letter-spacing:.01em;
  line-height:.98;
  text-wrap:balance;
  margin:0 0 .45em;
}
h1{font-size:clamp(34px,min(6.2vw,9.4svh),82px)}
h2{font-size:clamp(30px,4vw,56px)}
h3{font-size:19px;letter-spacing:.02em;line-height:1.22}
p{color:var(--ink-soft);max-width:56ch;margin:0 0 1em}

.eyebrow{
  display:flex;align-items:center;gap:12px;
  max-width:none;
  font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink-soft);margin:0 0 18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand-yellow);flex:none}
.on-media .eyebrow{color:var(--on-media-soft)}

/* ---------- 5. Botones ----------
   Un único CTA en toda la página: el del cierre, que lleva al
   formulario de cotización del sitio principal. Solo la variante
   glass (la única permitida sobre foto). */
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.actions--center{justify-content:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 26px;border-radius:5px;border:0;
  font-size:13px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;
  text-decoration:none;
  transition:translate var(--t-fast) var(--ease-out),background var(--t-fast) var(--ease-soft);
}
.btn svg{width:17px;height:17px;flex:none;transition:translate var(--t-fast) var(--ease-out)}
.btn:hover{translate:0 -2px}
.btn:hover svg{translate:5px 0}
.btn--glass{background:rgba(0,0,0,.34);color:#FFF;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.btn--glass:hover{background:rgba(0,0,0,.5)}

/* ---------- 6. Header ---------- */
.site-header{
  position:fixed;inset:0 0 auto;z-index:100;height:var(--header-h);
  transition:background var(--t-mid) var(--ease-soft),box-shadow var(--t-mid) var(--ease-soft);
}
.site-header.is-scrolled{background:var(--surface);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:26px;height:var(--header-h)}
.brand{display:inline-flex;flex:none}
.brand img{height:40px;width:auto}
/* Sobre el hero el logo se aclara; con header sólido vuelve a color */
.site-header:not(.is-scrolled) .brand img{filter:brightness(0) invert(1)}
[data-theme="dark"] .brand img{filter:brightness(0) invert(1)}

.main-nav{margin-left:auto}
.main-nav ul{display:flex;gap:6px}
.main-nav a{
  display:inline-block;padding:10px 14px;border-radius:5px;
  font-size:13px;font-weight:600;letter-spacing:.04em;text-decoration:none;
  color:var(--on-media);
  transition:background var(--t-fast) var(--ease-soft),color var(--t-fast) var(--ease-soft);
}
.site-header.is-scrolled .main-nav a{color:var(--ink)}
.main-nav a:hover{background:rgba(128,128,128,.16)}

.header-actions{display:flex;align-items:center;gap:12px}
.theme-toggle{
  width:40px;height:40px;border-radius:5px;border:0;background:transparent;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--on-media);
}
.site-header.is-scrolled .theme-toggle{color:var(--ink)}
.theme-toggle svg{width:20px;height:20px}
.theme-toggle .icon-sun{display:none}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}
[data-theme="dark"] .theme-toggle .icon-sun{display:block}

.nav-toggle{
  display:none;width:44px;height:44px;border:0;border-radius:5px;background:transparent;
  color:var(--on-media);align-items:center;justify-content:center;
}
.site-header.is-scrolled .nav-toggle{color:var(--ink)}
.nav-toggle svg{width:24px;height:24px}
.nav-toggle .icon-close{display:none}

/* ---------- 7. Secciones con video a sangre ---------- */
.media-section{
  position:relative;
  min-height:100svh; /* cada equipo ocupa el viewport completo */
  display:flex;align-items:flex-end;
  overflow:hidden;
  color:var(--on-media);
}
.media-section--short{min-height:min(62svh,560px)}
.media-section .content{position:relative;z-index:3;width:100%;padding-block:clamp(46px,7svh,86px)}
.media-inner{max-width:640px}
.media-section--right .media-inner{margin-left:auto}
/* :not(.eyebrow): el antetítulo hereda max-width de p y se partiría
   en dos líneas — trampa conocida del sistema.
   El cuerpo crece con el viewport: a pantalla completa, 16px se pierde. */
.media-section .media-inner p:not(.eyebrow){
  color:var(--on-media-soft);max-width:44ch;
  font-size:clamp(17px,12px + 0.55vw,20px);line-height:1.62;
}

/* Chips de características: tres datos clave por equipo, en píldoras
   de vidrio — misma receta que .btn--glass, solo lectura */
.media-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.media-facts li{
  display:inline-flex;align-items:center;
  padding:9px 16px;border-radius:999px;
  background:rgba(0,0,0,.32);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  font-size:13.5px;font-weight:600;letter-spacing:.02em;
  color:var(--on-media);
}
.media-inner--center{margin-inline:auto;text-align:center}
.media-inner--center .eyebrow{justify-content:center}
.media-inner--center p{margin-inline:auto}

/* Fondo: capa difuminada a sangre + video vertical nítido.
   Los videos son verticales (celular); el difuminado del mismo
   fotograma llena el ancho sin deformar ni recortar el video. */
.media-section .bg{position:absolute;inset:0;z-index:1;background:#0C0D0F}
.media-section .bg .fill{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:blur(26px) saturate(1.05);
  scale:1.15;
}
.bg--video .media{
  position:absolute;top:0;height:100%;width:auto;
  right:clamp(24px,8vw,180px);
  box-shadow:var(--shadow-lg);
}
.media-section--right .bg--video .media{right:auto;left:clamp(24px,8vw,180px)}

/* Velo doble: garantiza contraste del texto sobre cualquier fotograma */
.media-section .veil{
  position:absolute;inset:0;z-index:2;
  background:
    linear-gradient(180deg,rgba(10,11,13,.42) 0%,rgba(10,11,13,.18) 40%,rgba(10,11,13,.66) 100%),
    linear-gradient(90deg,rgba(10,11,13,.72) 0%,rgba(10,11,13,.34) 46%,rgba(10,11,13,.06) 100%);
}
.media-section--right .veil{
  background:
    linear-gradient(180deg,rgba(10,11,13,.42) 0%,rgba(10,11,13,.18) 40%,rgba(10,11,13,.66) 100%),
    linear-gradient(270deg,rgba(10,11,13,.72) 0%,rgba(10,11,13,.34) 46%,rgba(10,11,13,.06) 100%);
}
.veil--center{
  background:
    linear-gradient(180deg,rgba(10,11,13,.55) 0%,rgba(10,11,13,.42) 50%,rgba(10,11,13,.66) 100%) !important;
}

.section-index{
  position:absolute;right:34px;top:50%;translate:0 -50%;z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:14px;
  font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--on-media-soft);
}
.media-section--right .section-index{right:auto;left:34px}
.section-index i{display:block;width:2px;height:54px;background:rgba(255,255,255,.32)}

/* Botón de pausa del video (WCAG 2.2.2) — área táctil 38×32 */
.video-ui{position:absolute;z-index:4;right:26px;bottom:24px}
.video-ui--left{right:auto;left:26px}
.video-btn{
  min-width:38px;min-height:32px;padding:5px 9px;border:0;border-radius:5px;
  background:rgba(0,0,0,.4);color:#FFF;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--t-fast) var(--ease-soft);
}
.video-btn:hover{background:rgba(0,0,0,.62)}
.video-btn svg{width:16px;height:16px}
.video-btn .icon-play{display:none}
.video-btn[aria-pressed="true"] .icon-pause{display:none}
.video-btn[aria-pressed="true"] .icon-play{display:block}

/* ---------- 8. Hero ---------- */
.media-section--hero{min-height:100svh}
.media-section--hero .media-inner--hero{max-width:760px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:10px 34px;margin-top:34px;
  color:var(--on-media-soft);font-size:14px;
}
.hero-facts strong{color:var(--on-media);font-weight:800;margin-right:6px}
.scroll-hint{
  position:absolute;left:50%;bottom:14px;translate:-50% 0;z-index:3;
  width:2px;height:42px;overflow:hidden;background:rgba(255,255,255,.18);
}
.scroll-hint i{
  display:block;width:100%;height:14px;background:var(--brand-yellow);
  animation:scroll-drop 1.8s var(--ease-soft) infinite;
}
@keyframes scroll-drop{from{translate:0 -16px}to{translate:0 46px}}

/* ---------- 9. Métricas ---------- */
.metrics{background:var(--surface);border-block:1px solid var(--line)}
.metrics-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:26px;
  padding-block:clamp(36px,5vw,58px);
}
.metric strong{
  display:block;font-size:clamp(30px,3.2vw,44px);font-weight:800;
  letter-spacing:.01em;line-height:1;color:var(--ink);
}
.metric span:last-child{
  display:block;margin-top:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-soft);
}

/* ---------- 10. Bloques claros ---------- */
.block{background:var(--surface);padding-block:clamp(70px,9vw,124px)}
.block--tint{background:var(--surface-tint)}
.block--warm{background:var(--surface-warm)}
.block-head{max-width:640px;margin-bottom:clamp(34px,4.5vw,60px)}

/* Vitrina de equipos — tarjetas de proporción fija con la imagen
   contenida (object-fit:cover) y el texto sobre un velo, al estilo
   de las fichas de producto de SpaceX/Tesla. La retícula es un bento:
   2 tarjetas anchas arriba, 3 abajo; cada fila comparte altura. */
.product-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.product{
  position:relative;grid-column:span 2;aspect-ratio:4/3.1;
  border-radius:12px;overflow:hidden;background:#0C0D0F;
  transition:translate var(--t-slow) var(--ease-out),box-shadow var(--t-slow) var(--ease-out);
}
.product--wide{grid-column:span 3;aspect-ratio:16/8.4}
.product::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;z-index:3;
  transform-origin:top;scale:1 0;
  transition:scale var(--t-slow) var(--ease-out);
}
.product:nth-child(5n+1)::before{background:var(--brand-yellow)}
.product:nth-child(5n+2)::before{background:var(--brand-lime)}
.product:nth-child(5n+3)::before{background:var(--brand-lime-soft)}
.product:nth-child(5n+4)::before{background:var(--brand-coral)}
.product:nth-child(5n+5)::before{background:var(--brand-gray)}
.product:hover{translate:0 -5px;box-shadow:var(--shadow-md)}
.product:hover::before{scale:1 1}
.product a{display:block;position:absolute;inset:0;text-decoration:none;color:var(--on-media)}
.product img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:scale var(--t-slow) var(--ease-out);
}
.product:hover img{scale:1.06}
.product-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,11,13,.06) 34%,rgba(10,11,13,.44) 66%,rgba(10,11,13,.86) 100%);
}
.product-body{
  position:absolute;inset:auto 0 0;display:block;
  padding:20px 22px 18px;
}
.product-num{
  display:block;font-size:12px;font-weight:800;letter-spacing:.18em;
  color:var(--brand-yellow);margin-bottom:6px;
}
.product-body h3{font-size:17px;color:#FFF;margin:0 0 4px}
.product-body p{
  font-size:13px;line-height:1.5;color:var(--on-media-soft);
  margin:0 0 10px;max-width:none;
}
.product-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:#FFF;opacity:.85;
  transition:opacity var(--t-fast) var(--ease-soft);
}
.product-more svg{width:15px;height:15px;transition:translate var(--t-fast) var(--ease-out)}
.product:hover .product-more{opacity:1}
.product:hover .product-more svg{translate:5px 0}

/* Aspiradora robótica */
.aspiradora-layout{
  display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(28px,4vw,64px);
  align-items:center;
}
.aspiradora-photo{margin:0;border-radius:12px;overflow:hidden;box-shadow:var(--shadow-md)}
.aspiradora-photo img{width:100%;height:100%;object-fit:cover}
.feature-list{display:grid;gap:26px}
.feature-list li{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start}
.feature-icon{
  width:52px;height:52px;border-radius:50%;background:var(--brand-yellow);color:#000;
  display:inline-flex;align-items:center;justify-content:center;grid-row:span 2;
}
.feature-icon svg{width:24px;height:24px}
.feature-list h3{font-size:15px;margin:4px 0 6px}
.feature-list p{font-size:14px;margin:0;grid-column:2}

/* ---------- 11. Contacto ---------- */
.contact-layout{
  display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(30px,5vw,72px);
  align-items:start;
}
.contact-layout .block-head{margin-bottom:0}
.contact-data{margin:0;display:grid;gap:22px}
.contact-data dt{
  font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-faint);margin-bottom:4px;
}
.contact-data dd{margin:0;color:var(--ink-soft);line-height:1.55}
.contact-data a{color:var(--ink);font-weight:600}

/* ---------- 12. Footer ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding-block:38px}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;gap:12px 34px}
.footer-logo{height:38px;width:auto}
[data-theme="dark"] .footer-logo{filter:brightness(0) invert(1)}
.footer-inner p{margin:0;font-size:13.5px;color:var(--ink-soft)}
.footer-inner a{color:var(--ink);font-weight:600}

/* ---------- 13. Revelado al hacer scroll ----------
   El estado oculto vive bajo html.js: si el JS falla,
   la página se ve completa. Nunca usar el patrón .no-js. */
html.js .reveal{
  opacity:0;translate:0 26px;
  transition:opacity var(--t-slow) var(--ease-soft),translate var(--t-slow) var(--ease-out);
}
html.js .reveal[data-delay="1"]{transition-delay:.12s}
html.js .reveal[data-delay="2"]{transition-delay:.24s}
html.js .reveal[data-delay="3"]{transition-delay:.36s}
html.js .reveal[data-delay="4"]{transition-delay:.48s}
html.js .reveal.is-in{opacity:1;translate:0 0}

/* ---------- 14. Menú móvil ---------- */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;inset:var(--header-h) 0 0;z-index:99;
    background:var(--surface);
    display:none;margin:0;padding:28px var(--gutter);
  }
  body.menu-open .main-nav{display:block}
  body.menu-open{overflow:hidden}
  body.menu-open .site-header{background:var(--surface);box-shadow:var(--shadow-sm)}
  body.menu-open .brand img{filter:none}
  [data-theme="dark"] body.menu-open .brand img,
  body.menu-open .nav-toggle,body.menu-open .theme-toggle{color:var(--ink)}
  body.menu-open .nav-toggle .icon-menu{display:none}
  body.menu-open .nav-toggle .icon-close{display:block}
  .main-nav ul{flex-direction:column;gap:4px}
  .main-nav a{color:var(--ink) !important;font-size:19px;font-weight:700;padding:16px 8px;border-bottom:1px solid var(--line)}
}
@media (max-width:1080px){
  [data-theme="dark"] body.menu-open .brand img{filter:brightness(0) invert(1)}
}

/* ---------- 15. Responsive ---------- */
@media (max-width:1180px){
  .section-index{display:none}
}
@media (max-width:980px){
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .product,.product--wide{grid-column:span 1;aspect-ratio:16/10}
  .product--wide{grid-column:span 2;aspect-ratio:16/7.6}
  .aspiradora-layout{grid-template-columns:1fr}
  .contact-layout{grid-template-columns:1fr}
}
@media (max-width:860px){
  :root{--header-h:66px}
  .brand img{height:34px}
  /* En pantallas angostas el video vertical cubre el fondo completo */
  .bg--video .media,.media-section--right .bg--video .media{
    left:50%;right:auto;translate:-50% 0;
    width:100%;height:100%;object-fit:cover;box-shadow:none;
  }
  .media-section .bg .fill{display:none}
  .media-section .veil,
  .media-section--right .veil{
    background:
      linear-gradient(180deg,rgba(10,11,13,.5) 0%,rgba(10,11,13,.3) 42%,rgba(10,11,13,.78) 100%);
  }
  .actions{justify-content:center}
  .actions .btn{width:100%;max-width:340px}
  .scroll-hint{display:none}
  .video-ui{bottom:18px;right:18px}
  .video-ui--left{right:auto;left:18px}
}
@media (max-width:780px){
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .product-grid{grid-template-columns:1fr}
  .product,.product--wide{grid-column:span 1;aspect-ratio:16/10}
}
/* Teléfono apaisado: se ocultan los datos para no comerse la altura */
@media (max-height:560px){
  .hero-facts{display:none}
  .media-facts{display:none}
}
@media (max-height:470px){
  h1{font-size:clamp(30px,7svh,44px)}
}

/* ---------- 16. Preferencias del usuario ----------
   Reducir movimiento: sin desplazamientos ni animaciones de
   desplazamiento; el contenido sigue apareciendo por fundido y
   los videos quedan en pausa (main.js), con botón para reproducir. */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .reveal{translate:0 0;transition:opacity .6s var(--ease-soft)}
  .scroll-hint i{animation:none}
  .btn:hover{translate:0 0}
  .btn:hover svg{translate:0 0}
  .product:hover{translate:0 0}
  .product:hover img{scale:1}
}

/* ---------- 17. Impresión ---------- */
@media print{
  .site-header,.video-ui,.scroll-hint,.section-index,.theme-toggle,.nav-toggle{display:none !important}
  .media-section{min-height:auto;color:#000}
  .media-section .bg,.media-section .veil{display:none}
  .media-section .media-inner p,.on-media .eyebrow{color:#000}
  .media-facts li{background:none;color:#000;padding:0 12px 0 0}
  body{color:#000;background:#FFF}
  .btn{display:none}
}