:root {
  --bg: #f6f7f8;
  --bg-elev: #ffffff;
  --text: #14151a;
  --text-soft: #393b44;
  --muted: #757882;
  --band: #eef0f2;
  --line: rgba(18, 20, 28, 0.08);
  --line-strong: rgba(18, 20, 28, 0.15);
  --ink: #161719;
  --accent: #3b5bdb;
  --accent-2: #2c46b8;
  --accent-soft: rgba(59, 91, 219, 0.1);
  --ok: #1f9d63;
  --radius: 18px;
  --radius-lg: 26px;
  --radius-sm: 11px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(20, 20, 30, 0.05);
  --shadow-md: 0 22px 60px -28px rgba(25, 20, 35, 0.32);
  --shadow-lg: 0 40px 90px -40px rgba(25, 20, 35, 0.45);
  --maxw: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  /* permite animar la altura de los acordeones hacia/desde "auto" */
  interpolate-size: allow-keywords;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.07;
  color: var(--text);
  text-wrap: balance;
}

p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

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

::selection {
  background: var(--accent);
  color: #fff;
}

/* ---------- Background depth ---------- */
.bg-mesh,
.bg-lines,
.bg-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.bg-mesh {
  z-index: -3;
  background:
    radial-gradient(55% 45% at 14% -5%, rgba(59, 91, 219, 0.1), transparent 70%),
    radial-gradient(48% 42% at 96% 4%, rgba(110, 140, 255, 0.09), transparent 72%),
    radial-gradient(50% 55% at 86% 98%, rgba(120, 145, 255, 0.06), transparent 70%),
    radial-gradient(40% 38% at 78% 6%, rgba(223, 140, 90, 0.05), transparent 72%);
}

/* Líneas onduladas que derivan en horizontal (parallax sutil) */
.bg-lines {
  z-index: -2;
  overflow: hidden;
  /* desvanece los bordes laterales para que el bucle sea invisible */
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 14%, #000 86%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, #000 14%, #000 86%, transparent 100%);
}

.bg-lines-pos {
  position: absolute;
  top: 11vh;
  left: 50%;
  width: 4800px;
  max-width: none;
  transform: translateX(-50%);
}

.bg-lines-breathe {
  animation: waveBreathe 14s ease-in-out infinite;
}

.bg-lines svg {
  display: block;
  width: 100%;
  height: auto;
}

.bg-lines .drift {
  animation: driftX 28s linear infinite;
}

.bg-lines .drift-medium {
  animation-duration: 22s;
}

.bg-lines .drift-fast {
  animation-duration: 18s;
}

.bg-lines .drift-rev {
  animation-duration: 36s;
  animation-direction: reverse;
}

@keyframes driftX {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-1200px);
  }
}

@keyframes waveBreathe {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

.bg-grain {
  z-index: -1;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Pantalla de entrada (intro) ---------- */
.intro {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(60% 60% at 50% 45%, rgba(59, 91, 219, 0.07), transparent 70%),
    var(--bg);
  transition: opacity 500ms ease;
}

/* Fase 1 — zoom hacia dentro del logo (la pantalla sigue opaca: no se ve la web) */
.intro.is-zooming {
  pointer-events: none;
}

.intro.is-zooming .intro-logo {
  transform: scale(45);
  opacity: 0;
}

/* Fase 2 — solo al terminar el zoom, se desvanece y aparece la web */
.intro.is-exit {
  opacity: 0;
  pointer-events: none;
}

.intro-logo {
  position: relative;
  display: inline-block;
  transform-origin: center center;
  /* el zoom dura 1300ms; el logo se desvanece en el último tramo (a partir de 800ms) */
  transition: transform 1300ms cubic-bezier(0.6, 0, 0.85, 0),
    opacity 550ms ease 800ms;
  will-change: transform, opacity;
}

.intro-logo img {
  display: block;
  height: clamp(104px, 18vw, 208px);
  width: auto;
  /* desvelado de izquierda a derecha */
  clip-path: inset(0 100% 0 0);
  animation: introReveal 1900ms cubic-bezier(0.65, 0, 0.35, 1) 300ms forwards;
}

@keyframes introReveal {
  to {
    clip-path: inset(0 0 0 0);
  }
}

/* ---------- Layout ---------- */
.section,
.site-header,
.site-footer {
  width: min(var(--maxw), calc(100% - 2.5rem));
  margin-inline: auto;
}

.section {
  padding: 6rem 0;
}

/* Banda a todo el ancho para diferenciar secciones alternas */
.section.band {
  position: relative;
}

.section.band::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100vw;
  left: 50%;
  transform: translateX(-50%);
  background: var(--band);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.section-head {
  max-width: none;
  margin-inline: auto;
  text-align: center;
}

.section-head h2 {
  display: inline-block;
  margin-top: 0.85rem;
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* Fusión negro → azul para los títulos de sección */
.section-head h2,
.contact-card h2 {
  background: linear-gradient(100deg, var(--text) 28%, var(--accent-2) 82%, var(--accent) 104%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-head .lead {
  margin: 1.2rem auto 0;
  color: var(--text-soft);
  font-size: 1.12rem;
  max-width: 60ch;
}

.section-head.wide {
  max-width: none;
}

.section-head.wide .lead {
  max-width: 60ch;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  gap: 1.5rem;
  min-height: 4.7rem;
}

.brand {
  align-self: center;
  justify-self: center;
}

.site-header > .btn {
  align-self: center;
  justify-self: end;
}

.site-header::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100vw;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(246, 244, 239, 0.7);
  backdrop-filter: saturate(150%) blur(16px);
  -webkit-backdrop-filter: saturate(150%) blur(16px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand-logo {
  display: block;
  height: 4.4rem;
  width: auto;
}

/* ---------- Selector de idioma ---------- */
.lang-select {
  position: relative;
  justify-self: center;
  align-self: center;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.7rem 0.5rem 0.6rem;
  border: none;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 5px 12px -6px rgba(20, 20, 40, 0.3);
  transition: box-shadow 180ms ease, transform 180ms ease, background 180ms ease;
}

.lang-toggle:hover {
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 4px 16px -6px rgba(20, 20, 40, 0.38);
  transform: translateY(-1px);
}

.lang-caret {
  color: var(--muted);
  transition: transform 220ms ease;
}

.lang-select.is-open .lang-caret {
  transform: rotate(180deg);
}

.lang-flag {
  display: inline-block;
  width: 22px;
  height: 15px;
  border-radius: 3px;
  overflow: hidden;
  flex: 0 0 auto;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.lang-flag svg {
  display: block;
  width: 100%;
  height: 100%;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 100%;
  margin: 0;
  padding: 0.35rem;
  list-style: none;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: 0.15rem;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 95;
}

.lang-select.is-open .lang-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-soft);
  cursor: pointer;
  white-space: nowrap;
  transition: background 140ms ease, color 140ms ease;
}

.lang-option:hover {
  background: rgba(18, 20, 28, 0.05);
  color: var(--text);
}

.lang-option[aria-selected="true"] {
  color: var(--accent-2);
}

.main-nav {
  display: flex;
  align-items: stretch;
  justify-self: center;
  gap: 0.2rem;
}

/* Botón de menú (solo móvil) */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  justify-self: end;
  align-self: center;
}

.nav-toggle .ico-close {
  display: none;
}

.main-nav a {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 0.9rem;
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 500;
  transition: color 180ms ease;
}

/* Glow que sube desde la línea inferior del header */
.main-nav a::before {
  content: "";
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  bottom: 0;
  height: 2.5rem;
  background: linear-gradient(to top, rgba(59, 91, 219, 0.22), transparent 92%);
  opacity: 0;
  transition: opacity 240ms ease;
  pointer-events: none;
}

/* Línea inferior degradada hacia los extremos */
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent) 50%, transparent);
  opacity: 0;
  transition: opacity 240ms ease;
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--text);
}

/* Hover: glow degradado + línea */
.main-nav a:hover::before,
.main-nav a:hover::after {
  opacity: 1;
}

/* Activo: solo la barra inferior, un poco más gruesa */
.main-nav a.is-active::after {
  opacity: 1;
  height: 3px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease,
    box-shadow 160ms ease, color 160ms ease;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: #000;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -12px rgba(0, 0, 0, 0.5);
}

.btn-outline,
.btn-dark {
  background: var(--bg-elev);
  border-color: var(--line-strong);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover,
.btn-dark:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  padding-inline: 0.3rem;
}

.btn-ghost::after {
  content: "→";
  transition: transform 160ms ease;
}

.btn-ghost:hover::after {
  transform: translateX(4px);
}

/* ---------- Kicker / chips ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.kicker::before {
  content: "";
  width: 18px;
  height: 1.5px;
  background: var(--accent);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: var(--bg-elev);
  box-shadow: var(--shadow-sm);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-soft);
}

.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(31, 157, 99, 0.18);
}

/* ---------- Hero ---------- */
.hero {
  min-height: calc(100vh - 4.7rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 2.5rem;
  padding-bottom: 3rem;
  text-align: center;
}

.hero-inner {
  max-width: 56rem;
  margin-inline: auto;
}

.hero .chip {
  margin-bottom: 1.8rem;
}

.hero h1 {
  margin: 0 auto;
  font-size: clamp(2.7rem, 6.8vw, 5.1rem);
  max-width: 18ch;
}

.type-line {
  display: block;
  margin-top: 0.15em;
  min-height: 1.1em;
}

.gradient-text {
  background: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 55%, #8a3bd8 130%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.type-caret {
  display: inline-block;
  width: 3px;
  height: 0.92em;
  margin-left: 0.06em;
  border-radius: 2px;
  background: var(--accent);
  transform: translateY(0.12em);
  animation: caretBlink 1.05s steps(1) infinite;
}

@keyframes caretBlink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero-lead {
  margin: 2.1rem auto 0;
  color: var(--text-soft);
  font-size: clamp(1.2rem, 2.1vw, 1.55rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
  max-width: 46ch;
  text-wrap: balance;
}

.hero-lead strong {
  color: var(--text);
  font-weight: 600;
}

.hero-lead-accent {
  color: var(--accent-2);
  font-weight: 500;
  white-space: nowrap;
}

.hero-cta {
  margin-top: 2.3rem;
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}

/* Metrics band */
.pulse-metrics {
  list-style: none;
  max-width: 880px;
  margin: 5rem auto 0;
  padding: 2.6rem 0 0;
  border-top: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.2rem;
  text-align: left;
}

.pulse-metrics li {
  position: relative;
  padding-left: 1.9rem;
}

.pulse-metrics li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 6px;
  height: 2rem;
  border-radius: 3px;
  background: linear-gradient(var(--accent), var(--accent-2));
}

.pulse-metrics strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 2.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.pulse-metrics span {
  display: block;
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.45;
}

/* ---------- Services (editorial list) ---------- */
.services-list {
  display: flex;
  flex-direction: column;
  max-width: 900px;
  margin: 2.8rem auto 0;
}

.service-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.9rem 0.4rem;
  border-top: 1px solid var(--line);
  transition: padding 220ms ease;
}

.services-list .service-row:last-child {
  border-bottom: 1px solid var(--line);
}

.service-num {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}

.service-row h3 {
  font-size: 1.45rem;
  transition: color 180ms ease;
}

.service-row p {
  margin-top: 0.55rem;
  color: var(--text-soft);
  font-size: 0.98rem;
  max-width: 56ch;
}

.service-arrow {
  font-size: 1.2rem;
  color: var(--muted);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 200ms ease, transform 200ms ease, color 200ms ease;
}

.service-row:hover {
  padding-left: 1.2rem;
  padding-right: 0;
}

.service-row:hover h3 {
  color: var(--accent-2);
}

.service-row:hover .service-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--accent);
}

/* ---------- Sistemas de IA (lista editorial) ---------- */
.systems-list {
  margin-top: 3rem;
  border-top: 1px solid var(--line-strong);
}

.system-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2.5rem;
  align-items: start;
  padding: 2.1rem 0.2rem;
  border-bottom: 1px solid var(--line);
}

.system-acronym {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: color 200ms ease;
}

.system-row:hover .system-acronym {
  color: var(--accent-2);
}

.system-full {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.system-body h3 {
  font-size: 1.22rem;
}

.system-body p {
  margin-top: 0.55rem;
  color: var(--text-soft);
  font-size: 0.97rem;
  max-width: 64ch;
}

/* ---------- Cases ---------- */
.cases {
  margin-top: 2.8rem;
  display: grid;
  gap: 1.4rem;
}

.cases-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.case {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 240ms ease, box-shadow 240ms ease;
}

.case:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.case-feature {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  align-items: stretch;
}

.case-shot {
  position: relative;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(100% 80% at 20% 0%, rgba(59, 91, 219, 0.22), transparent 60%),
    linear-gradient(150deg, #232633 0%, #181a22 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.case-feature .case-shot {
  aspect-ratio: auto;
  min-height: 320px;
}

.case-shot img,
.case-shot video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Tarjeta destacada con vídeo: recorte exacto de las bandas negras del archivo.
   El vídeo es 1920x1080 con 147px de banda arriba y 47px abajo → contenido útil
   1920x886 (relación ~2.167). Recortamos esas bandas con un wrapper a esa relación
   y desplazando el vídeo hacia arriba la banda superior (147/1080 = 13.611%). */
.case-feature .case-shot.has-media {
  background: #ffffff;
}

/* El vídeo llena la zona (a cualquier altura) recortando las bandas negras:
   se escala para que el contenido útil (886 de 1080) ocupe todo el alto del
   recuadro y se desplaza hacia arriba la banda superior (147/1080 = 13.611%). */
.case-feature .case-shot.has-media video {
  inset: auto;
  top: 0;
  left: 50%;
  width: auto;
  height: calc(100% * 1080 / 886);
  object-fit: fill;
  transform: translate(-50%, -13.611%);
}

.case-shot.has-media::after {
  display: none;
}

.case-shot.has-media {
  cursor: pointer;
}

/* Indicador de pausa: scrim + botón de play centrado */
.case-shot.has-media.is-paused::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: rgba(18, 20, 28, 0.3);
}

.case-shot.has-media.is-paused::after {
  display: block;
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 64px;
  height: 64px;
  border: none;
  padding: 0;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.95);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%232c46b8'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 54% center;
  background-size: 42%;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.3);
  transform: translate(-50%, -50%);
  z-index: 3;
}

/* Las cajas del par adoptan la proporción del contenido del vídeo (1920x923 ≈ 2.08)
   para que se vea todo el ancho de la interfaz sin recortar los laterales. */
.cases-pair .case-shot {
  aspect-ratio: 1920 / 923;
}

/* Vídeo de contratos: solo se recortan las bandas (107px arriba / 50px abajo)
   desplazándolo hacia arriba; el ancho se ve completo. */
.case-shot.crop-contratos video {
  inset: auto;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
  object-fit: fill;
  transform: translateY(-9.907%);
}

/* ---- Caso dividido: descripción a la izquierda + vídeo vertical a la derecha ---- */
.case-split {
  display: grid;
  grid-template-columns: 1fr clamp(150px, 36%, 200px);
  align-items: stretch;
}

.case-split .case-info {
  align-self: center;
  padding: 1.6rem 1.7rem;
}

.cases-pair .case-split .case-shot {
  aspect-ratio: auto;
  min-height: 0;
  margin: 0;
  border: 0;
  border-radius: 0;
  background: #0c0d12;
}

/* Vídeo recepcionista 1080x1920 con bandas laterales (117px izq / 136px der →
   contenido 827 de ancho). Rellena la franja recortando esas bandas. */
.case-shot.crop-recepcionista video {
  inset: auto;
  left: 50%;
  top: 50%;
  height: 100%;
  width: auto;
  object-fit: fill;
  transform: translate(-50%, -50%);
}

.case-shot::after {
  content: attr(data-label);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42);
  border: 1px dashed rgba(255, 255, 255, 0.25);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-pill);
}

.case-info {
  padding: 1.6rem 1.7rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-info .panel-label {
  color: var(--accent-2);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.case-info h3 {
  margin-top: 0.7rem;
  font-size: 1.35rem;
}

.case-info p {
  margin-top: 0.6rem;
  color: var(--text-soft);
  font-size: 0.96rem;
}

.case-tags {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.case-tags li {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.7rem;
}

/* ---------- Process (timeline) ---------- */
.process-grid {
  list-style: none;
  margin: 3rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  position: relative;
}

.process-grid::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--text) 0%, var(--accent-2) 78%, var(--accent) 100%);
  transform: scaleX(0);
  transform-origin: left center;
}

/* Avance por tramos: la línea se detiene en cada número y continúa después */
.process-grid.is-revealed::before {
  animation: processLine 4200ms linear forwards;
}

@keyframes processLine {
  0% {
    transform: scaleX(0);
  }
  14.3% {
    transform: scaleX(0.2575);
  }
  28.6% {
    transform: scaleX(0.2575);
  } /* pausa: aparece el 02 */
  42.9% {
    transform: scaleX(0.5125);
  }
  57.1% {
    transform: scaleX(0.5125);
  } /* pausa: aparece el 03 */
  71.4% {
    transform: scaleX(0.7660);
  }
  85.7% {
    transform: scaleX(0.7660);
  } /* pausa: aparece el 04 */
  100% {
    transform: scaleX(1);
  }
}

/* Versión vertical (móvil): la línea baja revelando los pasos */
@keyframes processLineV {
  from {
    transform: scaleY(0);
  }
  to {
    transform: scaleY(1);
  }
}

.process-grid li {
  position: relative;
  padding-top: 3rem;
}

/* Aparición secuenciada: cada paso se revela cuando la línea lo alcanza */
.js .process-grid li {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 400ms ease, transform 400ms ease;
}

.js .process-grid.is-revealed li {
  opacity: 1;
  transform: translateY(0);
}

/* Cada paso aparece cuando la línea se detiene en su número */
.js .process-grid.is-revealed li:nth-child(2) {
  transition-delay: 600ms;
}
.js .process-grid.is-revealed li:nth-child(3) {
  transition-delay: 1800ms;
}
.js .process-grid.is-revealed li:nth-child(4) {
  transition-delay: 3000ms;
}

.process-grid span {
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--band);
  border: 1.5px solid var(--accent);
  color: var(--accent-2);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
}

.process-grid h3 {
  font-size: 1.15rem;
}

.process-grid p {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.94rem;
}

/* ---------- Stack ---------- */
.stack-section {
  text-align: center;
}

/* Carrusel de capacidades (dos filas en parallax) */
.marquee {
  overflow: hidden;
  padding: 0.45rem 0;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 11%, #000 89%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 11%, #000 89%, transparent);
}

.section-head + .marquee {
  margin-top: 2.8rem;
}

.marquee + .marquee {
  margin-top: 1rem;
}

.marquee-row {
  display: flex;
  width: max-content;
  margin: 0;
  padding: 0;
  list-style: none;
  animation: marquee 46s linear infinite;
}

.marquee-row.reverse {
  animation-duration: 56s;
  animation-direction: reverse;
}

.marquee:hover .marquee-row {
  animation-play-state: paused;
}

.marquee-row li {
  flex: 0 0 auto;
  margin-right: 2.4rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--text-soft);
  white-space: nowrap;
  transition: color 180ms ease;
}

.marquee-row li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}

.marquee-row li:hover {
  color: var(--text);
}

/* Cada ficha con un punto de color distinto */
.marquee-row li.chip-blue::before {
  background: #3b5bdb;
  box-shadow: 0 0 0 4px rgba(59, 91, 219, 0.16);
}

.marquee-row li.chip-violet::before {
  background: #8a3bd8;
  box-shadow: 0 0 0 4px rgba(138, 59, 216, 0.16);
}

.marquee-row li.chip-teal::before {
  background: #14a0aa;
  box-shadow: 0 0 0 4px rgba(20, 160, 170, 0.16);
}

.marquee-row li.chip-amber::before {
  background: #df8c5a;
  box-shadow: 0 0 0 4px rgba(223, 140, 90, 0.18);
}

.marquee-row li.chip-green::before {
  background: #1f9d63;
  box-shadow: 0 0 0 4px rgba(31, 157, 99, 0.16);
}

.marquee-row li.chip-ghost::before {
  background: #7d8cff;
  box-shadow: 0 0 0 4px rgba(125, 140, 255, 0.16);
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 820px;
  margin: 2.8rem auto 0;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem 0.25rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.14rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: color 160ms ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  color: var(--accent-2);
}

.faq-item summary::after {
  content: "";
  flex: 0 0 auto;
  width: 13px;
  height: 13px;
  background: linear-gradient(var(--accent), var(--accent)) center / 100% 1.5px no-repeat,
    linear-gradient(var(--accent), var(--accent)) center / 1.5px 100% no-repeat;
  transition: transform 240ms ease;
}

.faq-item[open] summary::after {
  transform: rotate(135deg);
}

.faq-item p {
  margin: 0;
  padding: 0 0.25rem 1.5rem;
  color: var(--text-soft);
  font-size: 0.98rem;
  max-width: 66ch;
}

/* Animación de abrir/cerrar (altura) del contenido del acordeón */
.faq-item::details-content {
  block-size: 0;
  overflow: hidden;
  transition: block-size 320ms ease, content-visibility 320ms ease allow-discrete;
}

.faq-item[open]::details-content {
  block-size: auto;
}

/* ---------- Contact ---------- */
.contact-section {
  padding-bottom: 5rem;
}

.contact-card {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 120% at 0% 0%, rgba(59, 91, 219, 0.1), transparent 55%),
    var(--bg-elev);
  padding: 3.2rem;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.contact-intro {
  display: flex;
  flex-direction: column;
}

.contact-card h2 {
  display: inline-block;
  font-size: clamp(2.1rem, 3.8vw, 3.2rem);
  letter-spacing: -0.03em;
  max-width: 16ch;
}

.contact-pitch {
  margin-top: 1.3rem;
  color: var(--text-soft);
  font-size: 1.08rem;
  max-width: 44ch;
}

.contact-points {
  list-style: none;
  margin: 1.7rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.contact-points li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.97rem;
  color: var(--text);
}

.contact-points li::before {
  content: "";
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--accent-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233b5bdb' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px;
}

.contact-links {
  margin-top: auto;
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.wa-link {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem;
  transition: transform 180ms ease;
}

.wa-link svg {
  display: block;
}

.wa-link:hover {
  transform: translateY(-2px) scale(1.08);
}

.lead-form {
  display: grid;
  gap: 0.2rem;
  align-content: center;
}

.lead-form label {
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 1.5rem;
}

.lead-form label:first-child {
  margin-top: 0;
}

.lead-form input,
.lead-form textarea {
  width: 100%;
  border: none;
  border-bottom: 1.5px solid var(--line-strong);
  border-radius: 0;
  padding: 0.55rem 0.15rem;
  color: var(--text);
  background: transparent;
  font: inherit;
  font-size: 1.02rem;
  transition: border-color 180ms ease;
}

.lead-form textarea {
  resize: vertical;
  min-height: 92px;
}

.lead-form input:focus,
.lead-form textarea:focus {
  outline: none;
  border-bottom-color: var(--accent);
}

.submit-wrap {
  position: relative;
  margin-top: 2rem;
}

.lead-form .btn {
  width: 100%;
}

/* Estado "cargando": spinner circular */
.btn-primary.is-loading {
  color: transparent;
  pointer-events: none;
}

.btn-primary.is-loading::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btnSpin 700ms linear infinite;
}

@keyframes btnSpin {
  to {
    transform: rotate(360deg);
  }
}

/* Estado "enviado": morph de color sutil a verde */
.btn-primary.is-sent,
.btn-primary.is-sent:hover {
  background: var(--ok);
  color: #fff;
  transform: none;
  box-shadow: 0 12px 26px -12px rgba(31, 157, 99, 0.6);
  cursor: default;
  transition: background 650ms ease, color 350ms ease 200ms;
}

.btn-primary.is-sent svg {
  margin-right: 0.1rem;
}

/* Salpicadura al llegar al verde */
.splash-dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 9px;
  margin: -4.5px 0 0 -4.5px;
  border-radius: 50%;
  background: var(--ok);
  pointer-events: none;
  z-index: 5;
  animation: splashOut 650ms cubic-bezier(0.2, 0.7, 0.3, 1) forwards;
}

@keyframes splashOut {
  0% {
    transform: translate(0, 0) scale(0);
    opacity: 1;
  }
  35% {
    opacity: 1;
  }
  100% {
    transform: translate(var(--dx, 0), var(--dy, 0)) scale(var(--s, 0.6));
    opacity: 0;
  }
}

.form-note {
  min-height: 1.15rem;
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--ok);
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer a:hover {
  color: var(--text);
}

/* ---------- Botón "volver arriba" ---------- */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 80;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  color: var(--text);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  transform: translateY(14px) scale(0.92);
  pointer-events: none;
  transition: opacity 260ms ease, transform 260ms ease, border-color 200ms ease,
    color 200ms ease;
}

.to-top.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.to-top:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  transform: translateY(-3px) scale(1);
}

.to-top svg {
  display: block;
}

@media (prefers-reduced-motion: reduce) {
  .to-top {
    transition: opacity 200ms ease;
    transform: none;
  }

  .to-top.is-visible,
  .to-top:hover {
    transform: none;
  }
}

/* ---------- Reveal animation ---------- */
.js [data-animate] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 650ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 650ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: calc(var(--d, 0) * 80ms);
}

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .case-feature {
    grid-template-columns: 1fr;
  }

  /* Descripción primero, vídeo después al apilarse */
  .case-feature .case-info {
    order: -1;
  }

  .case-feature .case-shot {
    min-height: 240px;
  }

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

  .cases-pair .case-split .case-shot {
    aspect-ratio: 827 / 1920;
    height: clamp(360px, 80vw, 460px);
    width: auto;
    justify-self: center;
    margin: 0 auto 1.6rem;
  }

  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.2rem 1.5rem;
  }

  .process-grid::before {
    display: none;
  }

  .contact-card {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
  }
}

@media (max-width: 720px) {
  .section {
    padding: 4rem 0;
  }

  .hero {
    min-height: auto;
    padding-top: 1.5rem;
  }

  /* ---- Cabecera móvil: idioma · logo centrado · hamburguesa ---- */
  .site-header {
    grid-template-columns: 1fr auto 1fr;
    gap: 0.5rem;
  }

  .lang-select {
    order: -1;
    justify-self: start;
  }

  .brand {
    order: 0;
    justify-self: center;
  }

  .nav-toggle {
    order: 1;
    display: inline-flex;
    justify-self: end;
  }

  .brand-logo {
    height: 3.7rem;
  }

  /* el desplegable de idioma abre desde la izquierda */
  .lang-menu {
    left: 0;
    right: auto;
  }

  .site-header.nav-open .nav-toggle .ico-open {
    display: none;
  }

  .site-header.nav-open .nav-toggle .ico-close {
    display: block;
  }

  .main-nav {
    display: flex;
    position: absolute;
    top: calc(100% + 0.4rem);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.1rem;
    padding: 0.4rem;
    background: var(--bg-elev);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 200ms ease, transform 200ms ease;
    z-index: 95;
  }

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

  .main-nav a {
    padding: 0.85rem 0.9rem;
    font-size: 0.98rem;
  }

  .main-nav a::before,
  .main-nav a::after {
    display: none;
  }

  .main-nav a.is-active {
    color: var(--accent-2);
    background: rgba(18, 20, 28, 0.04);
    border-radius: 8px;
  }

  .pulse-metrics {
    grid-template-columns: 1fr;
    gap: 1.4rem;
    margin-top: 3rem;
  }

  .cases-pair {
    grid-template-columns: 1fr;
  }

  /* Tarjeta del par sin vídeo vertical: descripción primero, vídeo después */
  .cases-pair .case:not(.case-split) {
    display: flex;
    flex-direction: column-reverse;
  }

  .system-row {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .service-row {
    grid-template-columns: auto 1fr;
  }

  .service-arrow {
    display: none;
  }

  /* ---- Proceso vertical: línea a la izquierda que baja revelando los pasos ---- */
  .process-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  .process-grid::before {
    display: block;
    top: 18px;
    bottom: 18px;
    left: 17px;
    right: auto;
    width: 3px;
    height: auto;
    background: linear-gradient(180deg, var(--text) 0%, var(--accent-2) 78%, var(--accent) 100%);
    transform: scaleY(0);
    transform-origin: top center;
  }

  .process-grid.is-revealed::before {
    animation: processLineV 2600ms linear forwards;
  }

  .process-grid li {
    padding: 0 0 0 3.2rem;
  }

  /* Reaparición sincronizada con el descenso de la línea */
  .js .process-grid.is-revealed li:nth-child(1) {
    transition-delay: 0ms;
  }
  .js .process-grid.is-revealed li:nth-child(2) {
    transition-delay: 850ms;
  }
  .js .process-grid.is-revealed li:nth-child(3) {
    transition-delay: 1700ms;
  }
  .js .process-grid.is-revealed li:nth-child(4) {
    transition-delay: 2500ms;
  }

  .site-footer {
    flex-direction: column;
    gap: 0.8rem;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .lang-name {
    display: none;
  }

  .lang-toggle {
    padding: 0.45rem 0.55rem;
  }

  .brand-logo {
    height: 3.3rem;
  }
}

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

  .js [data-animate] {
    transition: none;
  }

  .bg-lines .drift,
  .bg-lines-breathe {
    animation: none;
  }

  .marquee {
    -webkit-mask-image: none;
    mask-image: none;
  }

  .marquee-row {
    animation: none;
    width: auto;
    flex-wrap: wrap;
    justify-content: center;
  }

  .marquee-row li {
    margin-bottom: 0.6rem;
  }

  .process-grid.is-revealed::before {
    animation: none;
    transform: scaleX(1);
  }

  .js .process-grid li {
    transition: none;
  }

  .faq-item::details-content {
    transition: none;
  }
}