/* ==========================================================================
   voltanet — voltanetlab.com
   Ultra minimalista · blanco protagonista · motion con propósito
   Paleta: #ffffff fondo · #19232d tinta · #dd421d acento · #555b63 gris · #e6e2de líneas
   ========================================================================== */

:root {
  --white: #ffffff;
  --ink: #19232d;
  --accent: #dd421d;
  --gray: #555b63;
  --line: #e6e2de;
  --font-display: 'Comfortaa', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --pad: clamp(1.25rem, 4vw, 4rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: auto; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  /* clip (no hidden): evita convertir el body en scroll-container */
  overflow-x: clip;
}

body.lang-fading [data-i18n] { opacity: 0; }
[data-i18n] { transition: opacity 200ms ease; }

img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; }

.section { padding: clamp(6rem, 14vh, 10rem) var(--pad); max-width: 1400px; margin: 0 auto; }

.kicker {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2.5rem;
}

/* elementos con reveal genérico */
[data-reveal] { opacity: 0; transform: translateY(32px); }
html.reduce [data-reveal] { opacity: 1; transform: none; }

/* ===== NAV ===== */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.4rem var(--pad);
  transition: padding 400ms ease, background 400ms ease, box-shadow 400ms ease;
}
.nav.is-scrolled {
  padding: 0.7rem var(--pad);
  background: rgba(255, 255, 255, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}
.nav__logo { display: flex; align-items: center; gap: 0.6rem; }
.nav__mark { width: 32px; height: auto; }
.nav__word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  color: var(--ink);
}
.nav__links { display: flex; gap: 1.8rem; font-size: 0.85rem; font-weight: 500; }
.nav__links a { color: var(--gray); transition: color 200ms ease; }
.nav__links a:hover { color: var(--accent); }
.nav__lang { display: flex; align-items: center; gap: 0.45rem; font-size: 0.8rem; font-weight: 600; color: var(--gray); }
.nav__lang button { letter-spacing: 0.06em; padding: 0.2rem; transition: color 200ms ease; }
.nav__lang button.is-active { color: var(--accent); }

/* dropdown de demos */
.nav__demos { position: relative; margin-left: auto; }
.nav__demos-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray);
  padding: 0.3rem 0.2rem;
  transition: color 200ms ease;
}
.nav__demos-btn:hover, .nav__demos.is-open .nav__demos-btn { color: var(--accent); }
.nav__demos-chev { transition: transform 180ms cubic-bezier(0.23, 1, 0.32, 1); }
.nav__demos.is-open .nav__demos-chev { transform: rotate(180deg); }
.nav__demos-menu {
  position: absolute;
  top: calc(100% + 0.7rem);
  right: 0;
  min-width: 240px;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(25, 35, 45, 0.10);
  padding: 0.4rem;
  /* nunca desde scale(0): entra desde 0.96 anclado al trigger */
  transform-origin: top right;
  opacity: 0;
  transform: translateY(-4px) scale(0.96);
  pointer-events: none;
  transition: opacity 120ms cubic-bezier(0.23, 1, 0.32, 1), transform 120ms cubic-bezier(0.23, 1, 0.32, 1);
}
.nav__demos.is-open .nav__demos-menu {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  transition-duration: 180ms;
}
.demo-item {
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem 0.8rem;
  border-radius: 7px;
  transition: background 150ms ease;
}
.demo-item:hover { background: rgba(221, 66, 29, 0.07); }
.demo-item strong { font-family: var(--font-display); font-size: 0.88rem; font-weight: 700; color: var(--ink); }
.demo-item span { font-size: 0.76rem; color: var(--gray); }
.demo-item--all { border-top: 1px solid var(--line); border-radius: 0 0 7px 7px; margin-top: 0.2rem; }
.demo-item--all strong { color: var(--accent); font-size: 0.82rem; }
html.reduce .nav__demos-menu { transition: opacity 150ms ease; transform: none; }

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__demos { margin-left: 0; }
}

/* ===== HERO ===== */
.hero-stage { height: 260vh; position: relative; }
html.reduce .hero-stage { height: 100vh; }
.hero-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--white);
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  will-change: transform;
}
.hero-content {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  will-change: transform, opacity;
  /* velo blanco radial: asienta el texto sobre el video (el fondo del video es blanco) */
  background: radial-gradient(55% 45% at 50% 50%, rgba(255, 255, 255, 0.82) 0%, rgba(255, 255, 255, 0.55) 55%, rgba(255, 255, 255, 0) 100%);
  text-shadow: 0 0 24px rgba(255, 255, 255, 0.9);
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: lowercase;
  font-size: clamp(3.2rem, 10vw, 8rem);
  letter-spacing: 0.01em;
  color: var(--ink);
  line-height: 1;
}
.hero-tagline {
  margin-top: 1.2rem;
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 2vw, 1.35rem);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}
.hero-sub {
  margin-top: 0.9rem;
  font-size: clamp(0.85rem, 1.4vw, 1rem);
  color: var(--gray);
  letter-spacing: 0.06em;
}
.hero-scrollhint {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  justify-items: center;
  gap: 0.7rem;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gray);
}
.hero-scrollhint__line {
  width: 1px;
  height: 3rem;
  background: var(--line);
  position: relative;
  overflow: hidden;
}
.hero-scrollhint__line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  animation: scrollhint 2.2s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}
@keyframes scrollhint { 0% { top: -100%; } 55% { top: 0; } 100% { top: 100%; } }
html.reduce .hero-scrollhint__line::after { animation: none; top: 0; }

/* rejilla de transición (Random Grid sobre video → blanco) */
.hero-grid {
  position: absolute;
  inset: 0;
  display: grid;
  pointer-events: none;
}
.hero-grid i { background: var(--white); opacity: 0; }
html.reduce .hero-grid { display: none; }

/* ===== ABOUT ===== */
.about { text-align: left; }
.manifesto { display: grid; gap: 0.4em; font-weight: 400; }
.manifesto__line {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 4.2rem);
  line-height: 1.18;
  color: var(--ink);
}
.manifesto__line--accent { color: var(--accent); }
.manifesto__line .w { display: inline-block; will-change: transform, opacity; }
.about-octopus { margin: clamp(3rem, 8vh, 6rem) auto 0; width: min(340px, 60vw); }
.about-loop { width: 100%; height: auto; background: var(--white); }

/* ===== CAPABILITIES ===== */
.caps-statement {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.5rem, 3.4vw, 2.6rem);
  line-height: 1.3;
  max-width: 24ch;
  margin-bottom: clamp(3rem, 8vh, 5.5rem);
}
.caps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2.5vw, 2.2rem);
}
@media (max-width: 900px) { .caps-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .caps-grid { grid-template-columns: 1fr; } }
.cap-tile { will-change: transform; }
.cap-tile__visual {
  aspect-ratio: 4 / 5;
  border-radius: 6px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  position: relative;
}
.cap-3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0; /* lo revela main3d.js al cargar el modelo */
  will-change: transform, opacity;
}
html.reduce .cap-3d { opacity: 1; }
.cap-tile__visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 20% 110%, rgba(221, 66, 29, 0.20), transparent 60%),
    radial-gradient(120% 90% at 85% -10%, rgba(25, 35, 45, 0.12), transparent 55%);
  pointer-events: none;
  background-size: 200% 200%;
  animation: capdrift 14s ease-in-out infinite alternate;
}
.cap-tile:nth-child(2) .cap-tile__visual::after { animation-delay: -4s; }
.cap-tile:nth-child(3) .cap-tile__visual::after { animation-delay: -8s; }
.cap-tile:nth-child(4) .cap-tile__visual::after { animation-delay: -11s; }
@keyframes capdrift {
  from { background-position: 0% 0%, 100% 100%; }
  to { background-position: 100% 100%, 0% 0%; }
}
html.reduce .cap-tile__visual::after { animation: none; }
.cap-tile figcaption { padding-top: 1.1rem; }
.cap-tile h3 { font-family: var(--font-display); font-size: 1.02rem; font-weight: 700; }
.cap-tile p { margin-top: 0.4rem; font-size: 0.86rem; line-height: 1.55; color: var(--gray); }

/* ===== SERVICES (pin horizontal en desktop) ===== */
.services { position: relative; }
.services-pin { padding: clamp(5rem, 12vh, 8rem) 0 clamp(4rem, 10vh, 6rem); overflow: hidden; }
.services-head { padding: 0 var(--pad); max-width: 1400px; margin: 0 auto 3.5rem; }
.services-head h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.5rem, 3.4vw, 2.6rem);
  max-width: 22ch;
  line-height: 1.3;
}
.services-track {
  display: flex;
  gap: clamp(1.5rem, 3vw, 3rem);
  padding: 0 var(--pad);
  will-change: transform;
  width: max-content;
}
.svc {
  width: clamp(300px, 34vw, 460px);
  flex-shrink: 0;
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
  display: grid;
  align-content: start;
  gap: 1rem;
  min-height: 300px;
}
.svc__num {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
}
.svc h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.2vw, 1.8rem);
  line-height: 1.25;
}
.svc p { color: var(--gray); font-size: 0.94rem; line-height: 1.6; max-width: 34ch; }

/* botones */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0.65rem 1.5rem;
  width: fit-content;
  transition: background 250ms ease, color 250ms ease, transform 250ms ease;
}
.btn:hover { background: var(--accent); color: var(--white); transform: translateY(-2px); }
.btn:active { transform: scale(0.97); transition-duration: 120ms; }
.btn--big {
  font-size: 1.05rem;
  padding: 1rem 2.2rem;
  background: var(--accent);
  color: var(--white);
}
.btn--big:hover { background: #c23917; transform: translateY(-3px); }

/* móvil: apilado vertical */
@media (max-width: 899px) {
  .services-track { flex-direction: column; width: auto; }
  .svc { width: 100%; min-height: 0; }
}
/* ===== PRODUCTS ===== */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.2rem, 2.5vw, 2rem);
}
@media (max-width: 820px) { .prod-grid { grid-template-columns: 1fr; } }
.prod-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: clamp(1.5rem, 3vw, 2.2rem);
  display: grid;
  align-content: start;
  gap: 0.9rem;
  background: var(--white);
  transition: transform 250ms cubic-bezier(0.23, 1, 0.32, 1), box-shadow 250ms ease, border-color 250ms ease;
}
.prod-card:hover {
  transform: translateY(-4px);
  border-color: rgba(221, 66, 29, 0.35);
  box-shadow: 0 16px 40px rgba(25, 35, 45, 0.08);
}
.prod-cover {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 16 / 9;
  background: var(--white);
}
.prod-art {
  width: 100%;
  height: 100%;
  display: block;
  transition: transform 500ms cubic-bezier(0.23, 1, 0.32, 1);
  transform-origin: center;
}
@media (hover: hover) and (pointer: fine) {
  .prod-card:hover .prod-art { transform: scale(1.05); }
}
.prod-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}
.prod-tag svg { flex-shrink: 0; }
.prod-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  line-height: 1.25;
}
.prod-sum { color: var(--gray); font-size: 0.94rem; line-height: 1.65; }
.prod-benefit {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink);
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}
.prod-benefit > span:first-child { color: var(--accent); font-weight: 700; }
.prod-card .btn { margin-top: 0.3rem; }
.prod-all { text-align: center; margin-top: clamp(2.5rem, 6vh, 4rem); }

/* ===== PROCESS ===== */
.process-line {
  height: 2px;
  background: var(--line);
  margin-bottom: 3rem;
  overflow: hidden;
}
.process-line i { display: block; height: 100%; width: 0%; background: var(--accent); }
html.reduce .process-line i { width: 100%; }
.process-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
}
@media (max-width: 760px) { .process-steps { grid-template-columns: 1fr 1fr; } }
.step__num { font-family: var(--font-display); color: var(--accent); font-size: 0.85rem; letter-spacing: 0.15em; }
.step h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; margin: 0.7rem 0 0.5rem; }
.step p { font-size: 0.88rem; color: var(--gray); line-height: 1.6; }

/* ===== CTA FINAL ===== */
.contact {
  text-align: center;
  display: grid;
  justify-items: center;
  gap: 2.2rem;
  padding-top: clamp(8rem, 18vh, 12rem);
  padding-bottom: clamp(8rem, 18vh, 12rem);
}
.contact__octopus { width: min(200px, 40vw); color: var(--accent); }
.contact__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 5.5rem);
  color: var(--ink);
}
.contact__hint { color: var(--gray); font-size: 0.9rem; }

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--line);
  padding: 3.5rem var(--pad) 4rem;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  justify-content: space-between;
  align-items: flex-start;
}
.footer__brand { display: flex; align-items: center; gap: 0.6rem; }
.footer__mark { width: 34px; height: auto; }
.footer__info { display: grid; gap: 0.55rem; font-size: 0.84rem; color: var(--gray); text-align: right; }
.footer__info a { color: var(--ink); transition: color 200ms ease; }
.footer__info a:hover { color: var(--accent); }
.footer__copy { font-size: 0.78rem; }
@media (max-width: 700px) { .footer { flex-direction: column; } .footer__info { text-align: left; } }

/* ===== WHATSAPP FLOTANTE ===== */
.wa-float {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: 90;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  display: grid;
  place-items: center;
  box-shadow: 0 8px 24px rgba(221, 66, 29, 0.35);
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 350ms ease, transform 350ms ease;
}
.wa-float.is-visible { opacity: 1; transform: none; pointer-events: auto; }