/* ==========================================================================
   S21 CONSULTING - Sistema de diseño
   Paleta extraída del logo: azul acero (principal), dorado (acento),
   crema cálido (fondo). Tema claro bloqueado: el logo lleva el fondo
   crema integrado y define la identidad de toda la página.

   Sistema de radios (regla documentada y aplicada en toda la página):
   - Elementos interactivos (botones, botón flotante): píldora (999px)
   - Contenedores (tarjetas, figuras, FAQ): 18px
   ========================================================================== */

:root {
  /* Fondo y superficies */
  --bg: #f7f5f0;
  --bg-alt: #efece3;
  --surface: #fffdf9;

  /* Tinta (textos) */
  --ink: #223047;
  --ink-soft: #4d5b70;

  /* Azul (color principal) */
  --azul-900: #1c2a42;
  --azul-800: #2b3d5c;
  --azul-700: #3a5074;
  --azul-600: #48608a;
  --azul-200: #cdd6e4;
  --azul-100: #e4e9f1;

  /* Dorado (acento) */
  --oro-700: #8f6a2a;
  --oro-600: #a87f3a;
  --oro-400: #c9a55e;
  --oro-100: #f0e6d2;

  /* Tipografía */
  --font: "Manrope", system-ui, -apple-system, sans-serif;

  /* Radios */
  --radio-contenedor: 18px;
  --radio-pildora: 999px;

  /* Sombra teñida al tono del fondo (nunca negro puro) */
  --sombra-suave: 0 8px 30px rgba(34, 48, 71, 0.08);
  --sombra-media: 0 16px 44px rgba(34, 48, 71, 0.14);

  --transicion: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Reset y base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* Elimina el retardo de 300ms del primer toque en móvil */
a, button {
  touch-action: manipulation;
}

/* Foco visible para navegación por teclado (WCAG 2.4.7) */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--oro-600);
  outline-offset: 3px;
}

/* Enlace para saltar la navegación: invisible hasta recibir foco */
.skip-link {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 50;
  padding: 12px 20px;
  background: var(--azul-900);
  color: #fdfcf9;
  font-weight: 700;
  border-radius: var(--radio-pildora);
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 24px;
}

/* ==========================================================================
   Utilidades tipográficas
   ========================================================================== */

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--azul-900);
  text-wrap: balance;
}

.section-sub {
  margin-top: 14px;
  color: var(--ink-soft);
  max-width: 55ch;
}

.section-head {
  margin-bottom: 56px;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--oro-700);
  margin-bottom: 12px;
}

/* ==========================================================================
   Botones
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: var(--radio-pildora);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--transicion), background-color var(--transicion),
              border-color var(--transicion), box-shadow var(--transicion);
}

.btn i {
  font-size: 1.25rem;
}

.btn:active {
  transform: translateY(1px) scale(0.98);
}

.btn--primary {
  background: var(--azul-700);
  color: #fdfcf9;
  box-shadow: var(--sombra-suave);
}

.btn--primary:hover {
  background: var(--azul-800);
  box-shadow: var(--sombra-media);
}

.btn--ghost {
  color: var(--azul-800);
  border: 1.5px solid var(--azul-200);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--azul-700);
  background: var(--azul-100);
}

.btn--gold {
  /* oro-700 da 4.9:1 con texto blanco; oro-600 se quedaba en 3.3:1 */
  background: var(--oro-700);
  color: #fdfcf9;
}

.btn--gold:hover {
  background: #7a5a23;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.25);
}

.btn--outline-light {
  color: #fdfcf9;
  border: 1.5px solid rgba(253, 252, 249, 0.4);
  background: transparent;
}

.btn--outline-light:hover {
  border-color: #fdfcf9;
  background: rgba(253, 252, 249, 0.1);
}

.btn--nav {
  padding: 11px 22px;
  font-size: 0.9375rem;
}

/* ==========================================================================
   Header
   ========================================================================== */

#top-sentinel {
  position: absolute;
  top: 0;
  height: 1px;
  width: 1px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 40; /* Escala z-index: header 40, menú móvil 39, flotante 30 */
  background: rgba(247, 245, 240, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow var(--transicion);
}

.header.scrolled {
  box-shadow: var(--sombra-suave);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* En escritorio el header se transforma en píldora flotante al hacer scroll */
@media (min-width: 769px) {
  .header {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .header.scrolled {
    box-shadow: none;
  }

  .header__inner {
    border: 1px solid transparent;
    border-radius: var(--radio-pildora);
    padding-inline: 8px;
    transition: height var(--transicion), margin var(--transicion),
                padding var(--transicion), background-color var(--transicion),
                border-color var(--transicion), box-shadow var(--transicion);
  }

  .header.scrolled .header__inner {
    height: 62px;
    margin-top: 10px;
    padding-inline: 24px;
    background: rgba(255, 253, 249, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-color: var(--azul-200);
    box-shadow: 0 12px 36px rgba(34, 48, 71, 0.16);
  }

  .header.scrolled .header__logo img {
    height: 50px;
  }
}

.header__logo img {
  height: 66px;
  width: auto;
  transition: height var(--transicion);
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink-soft);
  position: relative;
  transition: color var(--transicion);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--oro-600);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transicion);
}

.nav__link:hover {
  color: var(--azul-900);
}

.nav__link:hover::after {
  transform: scaleX(1);
}

/* Sección actual destacada en la navegación (scroll-spy en main.js) */
.nav__link.activo {
  color: var(--azul-900);
}

.nav__link.activo::after {
  transform: scaleX(1);
}

.header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.header__toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--azul-900);
  border-radius: 2px;
  transition: transform var(--transicion), opacity var(--transicion);
}

.header__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.header__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100dvh - 76px);
  display: flex;
  align-items: center;
  padding-block: 48px;
}

/* --- Fondo: rejilla infinita + capa activa que sigue al cursor --- */

.hero__fondo {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid-mascara {
  position: absolute;
  inset: 0;
  color: var(--azul-700);
}

/* Capa base: siempre visible, muy tenue */
.grid-mascara--base {
  opacity: 0.08;
}

/* Capa activa: solo visible dentro del círculo que sigue al cursor */
.grid-mascara--activa {
  opacity: 0.55;
  -webkit-mask-image: radial-gradient(320px circle at var(--mx, 50%) var(--my, 38%), #000, transparent);
  mask-image: radial-gradient(320px circle at var(--mx, 50%) var(--my, 38%), #000, transparent);
}

/* La rejilla se dibuja con gradientes y se desplaza en diagonal.
   Sobra 80px en ambos ejes para que el bucle de 40px sea invisible. */
.grid-capa {
  position: absolute;
  top: -40px;
  left: -40px;
  width: calc(100% + 80px);
  height: calc(100% + 80px);
  background-image:
    linear-gradient(to right, currentColor 1px, transparent 1px),
    linear-gradient(to bottom, currentColor 1px, transparent 1px);
  background-size: 40px 40px;
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes desplazarGrid {
    from { transform: translate(0, 0); }
    to   { transform: translate(40px, 40px); }
  }

  .grid-capa {
    animation: desplazarGrid 2.8s linear infinite;
    will-change: transform;
  }
}

/* Halos de color de marca, desenfocados tras el contenido */
.hero__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
}

.hero__blob--oro {
  top: -22%;
  right: -12%;
  width: 44%;
  aspect-ratio: 1;
  background: rgba(201, 165, 94, 0.38);
}

.hero__blob--azul {
  bottom: -28%;
  left: -12%;
  width: 48%;
  aspect-ratio: 1;
  background: rgba(72, 96, 138, 0.32);
}

/* --- Contenido centrado --- */

.hero__contenido {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__title {
  font-size: clamp(2.7rem, 8vw, 4.75rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--azul-900);
}

.hero__oro {
  color: var(--oro-600);
}

.hero__title em {
  font-style: italic;
  color: var(--oro-700);
  line-height: 1.1;
  padding-bottom: 4px;
  display: inline-block;
}

/* Máscara de línea para revelados de texto (hero y manifiesto).
   El padding inferior evita recortar los descendentes de la cursiva. */
.linea {
  display: block;
  overflow: hidden;
  padding-bottom: 0.12em;
  margin-bottom: -0.12em;
}

.linea-inner {
  display: inline-block;
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes subirLinea {
    from { transform: translateY(115%); }
    to   { transform: translateY(0); }
  }

  @keyframes aparecer {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .hero__title .linea-inner {
    animation: subirLinea 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .hero__title .linea:nth-child(2) .linea-inner {
    animation-delay: 0.12s;
  }

  .hero__fade {
    animation: aparecer 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
  }

  .hero__fade--2 {
    animation-delay: 0.55s;
  }
}

.hero__subtitle {
  margin-top: 24px;
  margin-inline: auto;
  font-size: clamp(1.1875rem, 2.2vw, 1.375rem);
  font-weight: 700;
  color: var(--ink);
  max-width: 50ch;
}

.hero__actions {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* Tratamiento duotono: cualquier foto en gris se integra en la marca */
.duotone {
  position: relative;
  overflow: hidden;
  border-radius: var(--radio-contenedor);
}

.duotone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05) brightness(1.02);
}

/* Parallax sutil en las fotos, ligado al scroll con animation-timeline
   (sin listeners). Los navegadores sin soporte muestran la foto estática. */
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    @keyframes parallaxFoto {
      from { transform: translateY(-5%) scale(1.12); }
      to   { transform: translateY(5%) scale(1.12); }
    }

    .duotone img {
      animation: parallaxFoto linear both;
      animation-timeline: view();
    }
  }
}

.duotone::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(58, 80, 116, 0.55), rgba(28, 42, 66, 0.35));
  mix-blend-mode: color;
  pointer-events: none;
}

/* ==========================================================================
   Confianza: marquee infinito de logos (entre el hero y "Problema")
   ========================================================================== */

/* Comparte fondo con la sección "Problema" que viene justo debajo:
   ambas leen como un único bloque azul con la cinta en movimiento arriba. */
.confianza {
  padding-block: 18px 0;
  background: var(--azul-900);
  overflow: hidden;
}

.confianza__eyebrow {
  text-align: center;
  margin-bottom: 0;
  color: var(--oro-400);
}

/* Ventana del marquee: desvanece los bordes para que los logos
   entren y salgan de forma suave en lugar de cortarse. */
.confianza__marquee {
  margin-top: 10px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 14%, #000 86%, transparent);
}

/* La pista mide el doble de su mitad visible: al trasladarla un -50%
   la segunda mitad (idéntica) ocupa el lugar de la primera y el bucle
   es imperceptible. */
.confianza__pista {
  display: flex;
  width: max-content;
}

.confianza__grupo {
  display: flex;
  align-items: center;
  gap: clamp(36px, 5vw, 64px);
  padding-inline-end: clamp(36px, 5vw, 64px);
  list-style: none;
}

/* Los PNG traen fondo blanco: grayscale + invert lo vuelve negro y el blend
   screen lo funde con el azul; los trazos quedan en claro sobre la banda.
   Al pasar el cursor el logo sube de brillo. */
.confianza__grupo img {
  width: clamp(44px, 4.5vw, 56px);
  height: auto;
  mix-blend-mode: screen;
  filter: grayscale(1) invert(1) brightness(1.1) opacity(0.6);
  transition: filter var(--transicion), transform var(--transicion);
}

.confianza__grupo li:hover img {
  filter: grayscale(1) invert(1) brightness(1.5) opacity(1);
  transform: translateY(-3px);
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes desplazarLogos {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
  }

  .confianza__pista {
    animation: desplazarLogos 38s linear infinite;
    will-change: transform;
  }

  /* Pausa al pasar el cursor: permite leer y hacer hover sobre cada logo */
  .confianza__marquee:hover .confianza__pista {
    animation-play-state: paused;
  }
}

/* Sin animaciones: se muestra un único grupo estático y centrado */
@media (prefers-reduced-motion: reduce) {
  .confianza__grupo[aria-hidden="true"] {
    display: none;
  }

  .confianza__pista {
    width: 100%;
    justify-content: center;
  }

  .confianza__grupo {
    flex-wrap: wrap;
    justify-content: center;
    padding-inline: 24px;
    row-gap: 32px;
  }
}

/* ==========================================================================
   Problema
   ========================================================================== */

/* Sin padding superior: continúa el bloque azul iniciado por .confianza */
.problema {
  background: var(--azul-900);
  padding-block: 56px 88px;
}

.problema__inner {
  max-width: 820px;
}

.problema__title {
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #fdfcf9;
}

.problema__text {
  margin-top: 20px;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--azul-200);
}

/* ==========================================================================
   Servicios
   ========================================================================== */

.servicios {
  padding-block: 112px;
}

.servicios__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 24px;
}

.servicio {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--azul-100);
  border-radius: var(--radio-contenedor);
  padding: 36px 32px;
  transition: transform var(--transicion), box-shadow var(--transicion),
              border-color var(--transicion);
}

/* Spotlight dorado que sigue al cursor (coordenadas via JS, solo pointermove) */
.servicio::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%),
              rgba(201, 165, 94, 0.18), transparent 65%);
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.servicio:hover::before {
  opacity: 1;
}

.servicio:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra-media);
  border-color: var(--azul-200);
}

.servicio:hover .servicio__icon {
  transform: translateY(-4px);
}

/* Celda destacada: ocupa toda la columna izquierda, fondo azul */
.servicio--destacado {
  grid-row: 1 / 3;
  background: var(--azul-700);
  border-color: var(--azul-700);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.servicio--destacado:hover {
  border-color: var(--azul-600);
}

/* Celda ancha: cierra la fila inferior para que el grid no deje huecos */
.servicio--ancho {
  grid-column: 2 / 4;
}

.servicio__icon {
  font-size: 2rem;
  color: var(--oro-600);
  display: block;
  margin-bottom: 20px;
  transition: transform var(--transicion);
}

.servicio--destacado .servicio__icon {
  color: var(--oro-400);
  font-size: 2.5rem;
}

.servicio__title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--azul-900);
  margin-bottom: 12px;
}

.servicio--destacado .servicio__title {
  color: #fdfcf9;
  font-size: 1.5rem;
}

.servicio__text {
  font-size: 0.9688rem;
  color: var(--ink-soft);
  line-height: 1.65;
}

.servicio--destacado .servicio__text {
  color: var(--azul-200);
  font-size: 1.0313rem;
}

.servicio__nota {
  margin-top: 24px;
  font-size: 0.8125rem;
  font-weight: 700;
  /* oro-100 sobre azul-700: contraste 4.5:1+ (oro-400 no llegaba) */
  color: var(--oro-100);
}

/* ==========================================================================
   Método
   ========================================================================== */

.metodo {
  background: var(--bg-alt);
  padding-block: 112px;
}

.metodo__lista {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.paso {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Fila del numeral + línea conectora hacia el siguiente paso */
.paso__linea {
  display: flex;
  align-items: center;
  gap: 18px;
}

/* Numerales gigantes perfilados en dorado; se rellenan al pasar el cursor */
.paso__num {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--oro-600);
  user-select: none;
  transition: color 0.4s ease;
}

@media (hover: hover) {
  .paso:hover .paso__num {
    color: var(--oro-600);
  }
}

/* La línea cruza el hueco del grid hasta tocar el siguiente numeral */
.paso__conector {
  flex: 1;
  height: 2px;
  margin-right: -48px;
  background: linear-gradient(90deg, var(--oro-400), rgba(201, 165, 94, 0.25));
  border-radius: 1px;
}

@media (prefers-reduced-motion: no-preference) {
  .paso__conector {
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
    /* Se dibuja después de que su paso haya aparecido */
    transition-delay: calc(var(--d, 0s) + 0.35s);
  }

  .reveal-group.in-view .paso__conector {
    transform: scaleX(1);
  }
}

.paso__title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--azul-900);
  margin-bottom: 8px;
  transition: color var(--transicion);
}

@media (hover: hover) {
  .paso:hover .paso__title {
    color: var(--azul-700);
  }
}

.paso__text {
  color: var(--ink-soft);
  font-size: 0.9688rem;
  line-height: 1.65;
}

/* ==========================================================================
   Manifiesto
   ========================================================================== */

.manifiesto {
  padding-block: 32px 112px;
}

.manifiesto__texto {
  font-size: clamp(1.75rem, 4.5vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--azul-900);
  max-width: 900px;
}

.manifiesto__texto em {
  font-style: italic;
  color: var(--oro-700);
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-lineas .linea-inner {
    transform: translateY(115%);
    transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .reveal-lineas .linea:nth-child(2) .linea-inner {
    transition-delay: 0.12s;
  }

  .reveal-lineas.in-view .linea-inner {
    transform: translateY(0);
  }
}

/* ==========================================================================
   Por qué S21: cuatro columnas con datos en oro y titular serif (Playfair
   Display), sobre el crema alterno del sitio.
   ========================================================================== */

.porque {
  padding-block: 80px;
  background: var(--bg-alt);
}

.porque__eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--oro-700);
}

.porque__eyebrow::before {
  content: "";
  width: 44px;
  height: 1px;
  background: var(--oro-600);
  flex-shrink: 0;
}

.porque__title {
  margin-top: 20px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(1.875rem, 4vw, 2.875rem);
  font-weight: 600;
  letter-spacing: 0.002em;
  line-height: 1.18;
  color: var(--azul-900);
  max-width: 24ch;
  text-wrap: balance;
}

.porque__head {
  margin-bottom: 48px;
}

.porque__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.porque__item {
  position: relative;
  padding-top: 30px;
}

/* Filete superior que se dibuja de izquierda a derecha al entrar en pantalla */
.porque__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(34, 48, 71, 0.18);
  transform-origin: left;
}

@media (prefers-reduced-motion: no-preference) {
  .porque__item::before {
    transform: scaleX(0);
    transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: calc(var(--d, 0ms) + 120ms);
  }

  .porque__grid.in-view .porque__item::before {
    transform: scaleX(1);
  }
}

/* Dato en serif dorado e icono: misma altura para alinear las cuatro columnas */
.porque__dato,
.porque__icono {
  display: flex;
  align-items: flex-end;
  height: 58px;
}

.porque__dato {
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2.25rem, 3.4vw, 3rem);
  font-weight: 600;
  line-height: 1;
  color: var(--oro-600);
}

.porque__icono {
  font-size: 2.25rem;
  color: var(--oro-600);
}

.porque__subtitulo {
  margin-top: 20px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--azul-900);
}

.porque__texto {
  margin-top: 10px;
  font-size: 0.9688rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

@media (max-width: 960px) {
  .porque__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .porque {
    padding-block: 64px;
  }

  .porque__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .porque__item {
    padding-top: 26px;
  }

  .porque__dato,
  .porque__icono {
    height: 48px;
  }
}

/* ==========================================================================
   Sobre nosotros
   ========================================================================== */

.sobre {
  padding-block: 112px;
}

.sobre__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: center;
}

.sobre__figure {
  aspect-ratio: 9 / 11;
  border-radius: var(--radio-contenedor);
  box-shadow: var(--sombra-media);
  overflow: hidden;
}

/* La foto se muestra en color (sin tratamiento duotono) */
.sobre__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .sobre__figure img {
      animation: parallaxFoto linear both;
      animation-timeline: view();
    }
  }
}

.sobre__rol {
  font-weight: 700;
  color: var(--oro-700);
  margin-top: 8px;
  margin-bottom: 24px;
}

.sobre__text {
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 18px;
  max-width: 58ch;
}

.sobre__credenciales {
  list-style: none;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sobre__credenciales li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9688rem;
  font-weight: 600;
  color: var(--ink);
}

.sobre__credenciales i {
  font-size: 1.375rem;
  color: var(--oro-600);
  flex-shrink: 0;
}

/* ==========================================================================
   CTA
   ========================================================================== */

.cta {
  background: linear-gradient(150deg, var(--azul-800), var(--azul-900));
  padding-block: 104px;
  position: relative;
  overflow: hidden;
}

/* Resplandor dorado que respira lentamente tras el contenido */
.cta::before {
  content: "";
  position: absolute;
  top: -40%;
  left: 50%;
  width: 720px;
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(201, 165, 94, 0.16), transparent 60%);
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes respirar {
    from { opacity: 0.7; transform: translateX(-50%) scale(0.95); }
    to   { opacity: 1;   transform: translateX(-50%) scale(1.08); }
  }

  .cta::before {
    animation: respirar 6s ease-in-out infinite alternate;
  }
}

.cta__inner {
  max-width: 720px;
  text-align: center;
}

.cta__title {
  font-size: clamp(1.875rem, 4.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: #fdfcf9;
}

.cta__text {
  margin-top: 18px;
  font-size: 1.0625rem;
  color: var(--azul-200);
}

.cta__actions {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.cta__contacto {
  margin-top: 32px;
  font-size: 0.9375rem;
  color: var(--azul-200);
}

.cta__contacto a {
  color: var(--oro-400);
  font-weight: 700;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transicion);
}

.cta__contacto a:hover {
  border-color: var(--oro-400);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq {
  padding-block: 112px;
}

.faq__inner {
  max-width: 780px;
}

.faq__lista {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq__item {
  background: var(--surface);
  border: 1px solid var(--azul-100);
  border-radius: var(--radio-contenedor);
  transition: border-color var(--transicion);
}

.faq__item.abierto {
  border-color: var(--oro-400);
}

.faq__pregunta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 22px 26px;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font);
  font-weight: 700;
  font-size: 1.0313rem;
  color: var(--azul-900);
  cursor: pointer;
}

.faq__icono {
  font-size: 1.25rem;
  color: var(--oro-600);
  flex-shrink: 0;
  transition: transform var(--transicion);
}

.faq__item.abierto .faq__icono {
  transform: rotate(45deg);
}

/* Apertura suave: el panel anima de 0fr a 1fr */
.faq__contenido {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq__item.abierto .faq__contenido {
  grid-template-rows: 1fr;
}

.faq__respuesta {
  overflow: hidden;
  min-height: 0;
  padding: 0 26px;
  color: var(--ink-soft);
  line-height: 1.7;
  max-width: 62ch;
  transition: padding-bottom 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq__item.abierto .faq__respuesta {
  padding-bottom: 24px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--azul-900);
  color: var(--azul-200);
  padding-top: 72px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer__logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #fdfcf9;
}

.footer__logo span {
  color: var(--oro-400);
}

.footer__desc {
  margin-top: 14px;
  font-size: 0.9375rem;
  line-height: 1.65;
  max-width: 34ch;
}

.footer__titulo {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #fdfcf9;
  margin-bottom: 18px;
}

.footer__lista {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__lista a {
  font-size: 0.9375rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  /* Área táctil cómoda sin alterar el ritmo visual */
  padding-block: 6px;
  margin-block: -6px;
  transition: color var(--transicion);
}

.footer__lista a:hover {
  color: var(--oro-400);
}

.footer__lista i {
  font-size: 1.125rem;
}

.footer__bottom {
  border-top: 1px solid rgba(228, 233, 241, 0.12);
  padding-block: 24px;
  font-size: 0.875rem;
}

/* ==========================================================================
   WhatsApp flotante
   ========================================================================== */

.whatsapp-flotante {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: var(--radio-pildora);
  background: var(--azul-700);
  color: #fdfcf9;
  font-size: 1.75rem;
  box-shadow: var(--sombra-media);
  transition: transform var(--transicion), background-color var(--transicion);
}

.whatsapp-flotante:hover {
  transform: translateY(-3px);
  background: var(--azul-800);
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes pulsoWhatsapp {
    0%   { box-shadow: 0 16px 44px rgba(34, 48, 71, 0.14), 0 0 0 0 rgba(58, 80, 116, 0.35); }
    70%  { box-shadow: 0 16px 44px rgba(34, 48, 71, 0.14), 0 0 0 16px rgba(58, 80, 116, 0); }
    100% { box-shadow: 0 16px 44px rgba(34, 48, 71, 0.14), 0 0 0 0 rgba(58, 80, 116, 0); }
  }

  .whatsapp-flotante {
    animation: pulsoWhatsapp 4s ease-out infinite;
  }
}

/* ==========================================================================
   Animaciones de entrada (activadas por IntersectionObserver en main.js)
   Comunican jerarquía: cada bloque aparece cuando entra en pantalla.
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .reveal.in-view {
    opacity: 1;
    transform: translateY(0);
  }

  /* Cascada: los hijos del grupo entran escalonados (retardo via --d en JS) */
  .reveal-group > * {
    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);
    transition-delay: var(--d, 0s);
  }

  .reveal-group.in-view > * {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .metodo__lista {
    gap: 32px;
  }

  .paso__conector {
    margin-right: -32px;
  }

  .servicios__grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: none;
  }

  .servicio--destacado {
    grid-row: auto;
    grid-column: 1 / -1;
  }

  .servicio--ancho {
    grid-column: auto;
  }

  .sobre__grid {
    gap: 48px;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .hero {
    min-height: calc(100dvh - 76px);
  }

  /* Menos coste de GPU en pantallas pequeñas */
  .hero__blob {
    filter: blur(70px);
  }

  /* Móvil: cronología vertical con línea conectora entre numerales */
  .metodo__lista {
    grid-template-columns: 1fr;
    gap: 44px;
    max-width: 560px;
  }

  .paso {
    flex-direction: row;
    align-items: flex-start;
    gap: 24px;
  }

  .paso__linea {
    flex-direction: column;
    flex-shrink: 0;
    width: 56px;
    align-items: center;
  }

  .paso__conector {
    display: none;
  }

  .paso__num {
    font-size: 3.25rem;
  }

  .paso::before {
    content: "";
    position: absolute;
    left: 27px;
    top: 62px;
    bottom: -38px;
    width: 2px;
    background: linear-gradient(180deg, var(--oro-400), rgba(201, 165, 94, 0.2));
    border-radius: 1px;
  }

  .paso:last-child::before {
    display: none;
  }

  .sobre__grid {
    grid-template-columns: 1fr;
  }

  .sobre__figure {
    max-width: 440px;
    aspect-ratio: 1 / 1;
  }
}

@media (max-width: 768px) {
  /* Navegación móvil */
  .header__toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    z-index: 39;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    padding: 12px 24px 24px;
    box-shadow: var(--sombra-media);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transicion), opacity var(--transicion),
                visibility var(--transicion);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    padding: 16px 4px;
    font-size: 1.0625rem;
    border-bottom: 1px solid var(--azul-100);
  }

  .nav__link::after {
    display: none;
  }

  .btn--nav {
    margin-top: 16px;
    justify-content: center;
  }

  .servicios,
  .metodo,
  .sobre,
  .faq {
    padding-block: 80px;
  }

  .problema,
  .cta {
    padding-block: 72px;
  }

  .servicios__grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: 20px;
  }

  .hero__actions .btn,
  .cta__actions .btn {
    width: 100%;
    justify-content: center;
  }

  .header__logo img {
    height: 54px;
  }

  .whatsapp-flotante {
    width: 54px;
    height: 54px;
    right: 16px;
    bottom: 16px;
  }
}

/* ==========================================================================
   Páginas legales (aviso legal, privacidad, cookies)
   ========================================================================== */

.legal {
  max-width: 780px;
  margin-inline: auto;
  padding: 140px 24px 96px;
}

.legal h1 {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--azul-900);
}

.legal h2 {
  margin-top: 40px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--azul-900);
}

.legal p,
.legal li {
  margin-top: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.legal ul {
  padding-left: 22px;
}

.legal li {
  margin-top: 8px;
}

.legal a {
  color: var(--oro-700);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal .legal__actualizacion {
  margin-top: 10px;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.legal strong {
  color: var(--ink);
}