/* ============================================================
   INDOMINUS · Sitio web — styles.css
   Sistema visual basado en el brand book oficial.
   Tipografía: Arial Nova (Adobe Fonts kit orx7qje).
   Paleta: blanco, #1d1d1b (Pantone Process Black), #d6d1ca (Warm Gray).
============================================================ */

:root {
  /* Color tokens */
  --ink: #1d1d1b;
  --ink-90: rgba(29, 29, 27, 0.90);
  --ink-70: rgba(29, 29, 27, 0.70);
  --ink-55: rgba(29, 29, 27, 0.55);
  --ink-40: rgba(29, 29, 27, 0.40);
  --ink-20: rgba(29, 29, 27, 0.20);
  --ink-10: rgba(29, 29, 27, 0.10);

  --warm: #d6d1ca;
  --warm-50: #ebe8e3;
  --warm-30: #f4f1ed;
  --warm-10: #faf8f5;

  --paper: #ffffff;

  /* Type scale */
  --font-sans: "arial-nova", "Arial Nova", Arial, "Helvetica Neue", Helvetica, system-ui, sans-serif;
  --tracking-eyebrow: 0.22em;
  --tracking-display: -0.01em;

  /* Layout */
  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4rem, 9vw, 7.5rem);
  --radius: 0;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ===== RESET ===== */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, picture, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 200ms var(--ease), color 200ms var(--ease);
}

button { font: inherit; cursor: pointer; }

ul, ol { margin: 0; padding: 0; list-style: none; }

p { margin: 0 0 1em; }

h1, h2, h3, h4, h5 { margin: 0 0 0.5em; font-weight: 700; line-height: 1.15; letter-spacing: var(--tracking-display); }

::selection { background: var(--ink); color: var(--paper); }

/* ===== LAYOUT HELPERS ===== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

main { display: block; }

section { padding-top: var(--section-y); padding-bottom: var(--section-y); }

.eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-55);
  margin: 0 0 1.25rem;
}

.display {
  font-size: clamp(1.75rem, 3.6vw, 2.75rem);
  font-weight: 700;
  letter-spacing: var(--tracking-display);
  color: var(--ink);
  margin: 0 0 1rem;
  max-width: 22ch;
}

.lead {
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  color: var(--ink-70);
  max-width: 56ch;
  margin: 0 0 2rem;
}

.prose p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-70);
  margin-bottom: 1.1em;
  text-align: justify;
  hyphens: none;
  -webkit-hyphens: none;
  -ms-hyphens: none;
  word-break: normal;
  overflow-wrap: normal;
}

.prose strong { color: var(--ink); font-weight: 700; }
.prose em { font-style: normal; color: var(--ink); }

/* ===== REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 800ms var(--ease), transform 800ms var(--ease);
  transition-delay: 0ms;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  text-transform: none;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  white-space: nowrap;
  transition: background 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease);
}
.btn--solid-dark {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn--solid-dark:hover { background: transparent; color: var(--ink); }

.btn--ghost-dark {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn--ghost-dark:hover { background: var(--ink); color: var(--paper); }

.btn--solid-light {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.btn--solid-light:hover { background: transparent; color: var(--paper); border-color: var(--paper); }

.btn--ghost-light {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
}
.btn--ghost-light:hover { background: var(--paper); color: var(--ink); }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  transition: background 250ms var(--ease), border-color 250ms var(--ease), padding 250ms var(--ease);
  background: transparent;
  border-bottom: 1px solid transparent;
  padding: 1rem 0;
}
.nav[data-scrolled="true"] {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom-color: var(--ink-10);
  padding: 0.625rem 0;
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.nav__logo {
  flex-shrink: 0;          /* nunca dejar que el flex aplaste el logo */
  display: inline-flex;
  line-height: 0;
}
.nav__logo img {
  height: 28px;
  width: auto;
  max-width: none;         /* anula el max-width:100% global que distorsiona */
  aspect-ratio: 12 / 1;    /* respaldo: preserva proporción si algo lo recorta */
  filter: invert(1) brightness(2); /* white logo on dark hero */
  transition: filter 250ms var(--ease);
}
.nav[data-scrolled="true"] .nav__logo img {
  filter: none;
}
@media (max-width: 480px) {
  .nav__logo img { height: 22px; }
}
.nav__links {
  display: none;
  align-items: center;
  gap: clamp(0.05rem, 0.25vw, 0.2rem);
}
.nav__link, .nav__cta {
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  text-transform: none;
  font-weight: 400;
  color: var(--paper);
  padding: 0.5rem 0.8rem;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: border-color 220ms var(--ease), background 220ms var(--ease), color 220ms var(--ease);
}
.nav[data-scrolled="true"] .nav__link,
.nav[data-scrolled="true"] .nav__cta { color: var(--ink); }

.nav__link:hover,
.nav__link.is-active {
  border-color: currentColor;
}

.nav__cta {
  border-color: currentColor;
}

/* Toggle de idioma — chips ES | EN compactos en el menú */
.lang {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  margin: 0 0.15rem;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}
/* Hereda el mismo comportamiento de color que .nav__link:
   blanco sobre el hero, oscuro cuando se scrollea. */
.nav .lang { color: var(--paper); }
.nav[data-scrolled="true"] .lang { color: var(--ink); }
.lang__link {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.55rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: inherit;
  font-weight: 400;
  text-transform: uppercase;
  opacity: 0.6;
  transition: border-color 220ms var(--ease), opacity 220ms var(--ease);
}
.lang__link:hover {
  border-color: currentColor;
  opacity: 1;
}
.lang__link.is-active {
  border-color: currentColor;
  opacity: 1;
}
.lang__sep {
  opacity: 0.3;
  font-size: 0.75rem;
  pointer-events: none;
}
/* Variante mobile: que el toggle quepa cómodo dentro del menú apilado */
.lang--mobile {
  margin: 0.5rem 0 0.25rem;
  align-self: flex-start;
}
.lang--mobile .lang__link { padding: 0.4rem 0.7rem; font-size: 0.9rem; }
.nav__cta:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.nav[data-scrolled="true"] .nav__cta:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.nav__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.nav__toggle span {
  display: block;
  height: 1.5px;
  width: 24px;
  background: var(--paper);
  margin: 0 auto;
  transition: background 250ms var(--ease), transform 220ms var(--ease), opacity 220ms var(--ease);
}
.nav[data-scrolled="true"] .nav__toggle span { background: var(--ink); }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 64px 0 auto 0;
  z-index: 49;
  background: var(--paper);
  border-bottom: 1px solid var(--ink-10);
  padding: 1.25rem var(--gutter) 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: 0 12px 40px -20px rgba(0,0,0,0.18);
  animation: slideDown 240ms var(--ease);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu__link, .mobile-menu__cta {
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  font-weight: 400;
  color: var(--ink);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--ink-10);
}
.mobile-menu__cta {
  margin-top: 0.75rem;
  text-align: center;
  border: 1px solid var(--ink);
  padding: 0.85rem 1.1rem;
  font-size: 1rem;
  border-radius: 999px;
  border-bottom-color: var(--ink);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (min-width: 880px) {
  .nav__links { display: flex; }
  .nav__toggle { display: none; }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100svh;
  min-height: 100vh;
  padding: 0;
  display: flex;
  align-items: center;
  color: var(--paper);
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--ink); /* color de espera mientras carga el video */
}
.hero__bg img,
.hero__bg video,
.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05) brightness(0.78);
}
.hero__video { display: block; }
.hero__overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.35) 40%, rgba(0,0,0,0.6) 100%);
}
.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(7rem, 14vh, 9rem) var(--gutter) clamp(5rem, 10vh, 7rem);
}
.hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.65rem;
  font-size: 0.78rem;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.75rem;
}
.hero__sep { color: rgba(255,255,255,0.55); }

.hero__title {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin: 0 0 1.5rem;
  max-width: 16ch;
}
.hero__lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  max-width: 50ch;
  color: rgba(255,255,255,0.85);
  margin-bottom: 2.5rem;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 28px;
  height: 44px;
  border: 1px solid rgba(255,255,255,0.55);
  border-radius: 14px;
  display: none;
}
.hero__scroll span {
  display: block;
  width: 2px;
  height: 8px;
  background: rgba(255,255,255,0.85);
  margin: 7px auto 0;
  animation: scrollDot 1.6s var(--ease) infinite;
}
@keyframes scrollDot {
  0%   { opacity: 0; transform: translateY(0); }
  30%  { opacity: 1; }
  70%  { opacity: 1; transform: translateY(14px); }
  100% { opacity: 0; transform: translateY(14px); }
}
@media (min-width: 768px) {
  .hero__scroll { display: block; }
}

/* ===== CONÓCENOS ===== */
.conocenos { background: var(--paper); }
.conocenos__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.conocenos__media img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
}

@media (min-width: 880px) {
  .conocenos__grid { grid-template-columns: 1.05fr 0.95fr; }
}

/* ===== ENFOQUE ===== */
.enfoque {
  position: relative;
  background-color: var(--warm-30);
  isolation: isolate;
  overflow: hidden;
}
/* Foto de Monterrey detrás, en B&W y muy tintada con el warm cream
   para que el hue del fondo siga dominando. */
.enfoque::before {
  content: "";
  position: absolute;
  inset: 0;
  /* Fallback JPG primero; navegadores con soporte de image-set sirven WebP */
  background-image: url("assets/hero-monterrey.jpg");
  background-image: -webkit-image-set(
    url("assets/hero-monterrey.webp") type("image/webp"),
    url("assets/hero-monterrey.jpg") type("image/jpeg")
  );
  background-image: image-set(
    url("assets/hero-monterrey.webp") type("image/webp"),
    url("assets/hero-monterrey.jpg") type("image/jpeg")
  );
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: grayscale(100%) contrast(1.05) brightness(1.05);
  opacity: 0.22;
  mix-blend-mode: multiply;
  pointer-events: none;
  z-index: -1;
}
/* Pequeña capa de calidez extra para uniformar bordes y reforzar el cream */
.enfoque::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 0%, transparent 0%, rgba(244, 241, 237, 0.55) 80%),
    linear-gradient(to bottom, rgba(244, 241, 237, 0.20), rgba(244, 241, 237, 0.45));
  pointer-events: none;
  z-index: -1;
}
.enfoque > .container { position: relative; z-index: 1; }

.enfoque__grid {
  margin-top: clamp(2.5rem, 4vw, 4rem);
  display: grid;
  gap: 1px;
  background: var(--ink-20);
  border-top: 1px solid var(--ink-20);
  border-bottom: 1px solid var(--ink-20);
}
.pillar {
  background: var(--warm-30);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 220px;
}
.pillar__num {
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--ink-55);
  margin-bottom: 1.5rem;
}
.pillar__title {
  font-size: clamp(1.4rem, 2vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
  color: var(--ink);
}
.pillar__text {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--ink-70);
  margin: 0;
  max-width: 38ch;
  text-align: justify;
  hyphens: none;
  -webkit-hyphens: none;
  -ms-hyphens: none;
  word-break: normal;
  overflow-wrap: normal;
}

@media (min-width: 640px) {
  .enfoque__grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
  .enfoque__grid { grid-template-columns: repeat(4, 1fr); }
}

/* ===== SERVICIOS ===== */
.servicios { background: var(--paper); }
.servicios__grid {
  margin-top: clamp(2.5rem, 4vw, 4rem);
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
}
.servicio {
  display: flex;
  flex-direction: column;
}
.servicio__media {
  margin: 0 0 1.25rem;
  overflow: hidden;
}
.servicio__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
  transition: transform 600ms var(--ease);
}
.servicio:hover .servicio__media img { transform: scale(1.03); }
.servicio__num {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--ink-55);
  margin: 0 0 0.5rem;
}
.servicio__title {
  font-size: clamp(1.5rem, 2.2vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
}
.servicio__text {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--ink-70);
  margin: 0;
  text-align: justify;
  hyphens: none;
  -webkit-hyphens: none;
  -ms-hyphens: none;
  word-break: normal;
  overflow-wrap: normal;
}

@media (min-width: 768px) {
  .servicios__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ===== PROCESO ===== */
.proceso {
  background: var(--ink);
  color: var(--paper);
}
.proceso .eyebrow { color: rgba(255,255,255,0.55); }
.proceso .display { color: var(--paper); }
.proceso__steps {
  margin-top: clamp(2.5rem, 4vw, 4rem);
  display: grid;
  gap: 2rem;
  counter-reset: step;
}
.step {
  padding: 2rem 0;
  border-top: 1px solid rgba(255,255,255,0.18);
  display: flex;
  flex-direction: column;
}
.step:last-child { border-bottom: 1px solid rgba(255,255,255,0.18); }
.step__media {
  margin: 0 0 1.25rem;
  overflow: hidden;
}
.step__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05) brightness(0.92);
  transition: transform 600ms var(--ease);
}
.step:hover .step__media img { transform: scale(1.03); }
.step__num {
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: rgba(255,255,255,0.5);
  display: block;
  margin-bottom: 0.85rem;
}
.step__title {
  font-size: clamp(1.4rem, 2vw, 1.7rem);
  margin: 0 0 0.65rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.step__text {
  font-size: 0.95rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.7);
  margin: 0;
  max-width: 56ch;
  text-align: justify;
  hyphens: none;
  -webkit-hyphens: none;
  -ms-hyphens: none;
  word-break: normal;
  overflow-wrap: normal;
}

@media (min-width: 880px) {
  .proceso__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }
  .step {
    padding: 2.5rem 1.5rem 2.5rem 0;
    border-top: 1px solid rgba(255,255,255,0.18);
    border-bottom: 0;
  }
  .step:last-child { border-bottom: 0; }
}

.capacidades {
  margin-top: clamp(3rem, 5vw, 5rem);
}
.capacidades .eyebrow { color: rgba(255,255,255,0.55); }
.capacidades__list {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.18);
}
.capacidades__list li {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.18);
  font-size: 0.98rem;
  color: rgba(255,255,255,0.85);
}
.capacidades__num {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: rgba(255,255,255,0.5);
  min-width: 2.4rem;
}

@media (min-width: 768px) {
  .capacidades__list {
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(2rem, 4vw, 3.5rem);
  }
}

/* ===== INVERSIONISTAS ===== */
.inversionistas {
  position: relative;
  background-color: var(--ink);
  color: var(--paper);
  isolation: isolate;
  overflow: hidden;
}
/* Foto de Monterrey detrás, en B&W y con velo oscuro encima
   para que se diferencie de la sección "Cómo trabajamos" arriba
   sin perder legibilidad del texto blanco. */
.inversionistas::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("assets/img-mty.jpg");
  background-image: -webkit-image-set(
    url("assets/img-mty.webp") type("image/webp"),
    url("assets/img-mty.jpg") type("image/jpeg")
  );
  background-image: image-set(
    url("assets/img-mty.webp") type("image/webp"),
    url("assets/img-mty.jpg") type("image/jpeg")
  );
  background-size: cover;
  background-position: center;
  filter: grayscale(100%) contrast(1.05);
  opacity: 0.9;
  pointer-events: none;
  z-index: -1;
}
.inversionistas::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(29,29,27,0.28) 0%,
    rgba(29,29,27,0.42) 50%,
    rgba(29,29,27,0.65) 100%);
  pointer-events: none;
  z-index: -1;
}
.inversionistas > .container { position: relative; z-index: 1; }
.inversionistas .eyebrow { color: rgba(255,255,255,0.55); }
.inversionistas .display { color: var(--paper); max-width: 28ch; }
.inversionistas .lead { color: rgba(255,255,255,0.75); max-width: 64ch; }

.inversionistas__grid {
  margin-top: clamp(2.5rem, 4vw, 4rem);
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.18);
}
.invblock {
  padding: clamp(1.5rem, 3vw, 2.25rem) 0;
  border-bottom: 1px solid rgba(255,255,255,0.18);
  /* Mobile: número, título y texto apilados, cada uno usando la columna completa. */
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.invblock__num {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,0.5);
  font-weight: 400;
}
.invblock__title {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--paper);
}
.invblock__text {
  font-size: 0.98rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.72);
  margin: 0;
  max-width: 60ch;
}

.inversionistas__cta {
  margin-top: clamp(2rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
  padding-top: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid rgba(255,255,255,0.10);
}
.inversionistas__cta p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.6);
  margin: 0;
  max-width: 48ch;
}

@media (min-width: 768px) {
  .invblock {
    display: grid;
    grid-template-columns: 5rem 1fr 1fr;
    gap: 2rem;
    align-items: start;
  }
  .invblock__title {
    grid-column: 2 / 3;
    margin: 0;
  }
  .invblock__text {
    grid-column: 3 / 4;
  }
  .inversionistas__cta {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ===== CONTACTO ===== */
.contacto { background: var(--warm-30); }
.contacto__grid {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: start;
}

.contacto__direct {
  display: grid;
  gap: 0;
  margin: 2rem 0 2rem;
  border-top: 1px solid var(--ink-20);
}
.contacto__direct li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--ink-20);
}
.contacto__label {
  font-size: 0.72rem;
  letter-spacing: var(--tracking-eyebrow);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ink-55);
}
.contacto__value {
  font-size: 0.98rem;
  color: var(--ink);
}
.contacto__value:hover { opacity: 0.65; }

.contacto__form {
  background: var(--paper);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  border: 1px solid var(--ink-10);
  display: grid;
  gap: 1.1rem;
}
.field { display: grid; gap: 0.4rem; }
.field label {
  font-size: 0.72rem;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink-70);
}
.field__opt {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--ink-40);
  margin-left: 0.4rem;
}
.field input,
.field textarea {
  font: inherit;
  width: 100%;
  background: var(--paper);
  color: var(--ink);
  border: 0;
  border-bottom: 1px solid var(--ink-20);
  border-radius: 0;
  padding: 0.55rem 0;
  font-size: 1rem;
  transition: border-color 200ms var(--ease);
}
.field textarea { resize: vertical; min-height: 4.5rem; }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--ink);
}
.field input:invalid:not(:placeholder-shown),
.field textarea:invalid:not(:placeholder-shown) {
  border-bottom-color: rgba(180, 30, 30, 0.55);
}
.field--hp {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap;
}
.contacto__form .btn { margin-top: 0.5rem; justify-self: start; }
.contacto__note {
  font-size: 0.78rem;
  color: var(--ink-55);
  margin: 0;
}
.contacto__error {
  font-size: 0.85rem;
  color: rgba(180, 30, 30, 0.95);
  margin: 0;
}

.contacto__success {
  background: var(--paper);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  border: 1px solid var(--ink-10);
}
.contacto__success-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}
.contacto__success-text {
  margin: 0;
  color: var(--ink-70);
}

@media (min-width: 880px) {
  .contacto__grid { grid-template-columns: 1.1fr 0.9fr; }
}

/* ===== SOCIAL ===== */
.social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
  margin: 0;
}
.social li { margin: 0; }
.social a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  text-transform: none;
  font-weight: 400;
  padding: 0.5rem 1rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}
.social__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.social--dark a { color: var(--ink); }
.social--dark a:hover { background: var(--ink); color: var(--paper); }
.social--light a { color: var(--paper); }
.social--light a:hover { background: var(--paper); color: var(--ink); }

/* ===== CIERRE ===== */
.cierre {
  position: relative;
  background-color: var(--ink);
  color: var(--paper);
  text-align: center;
  min-height: 100vh;        /* fallback */
  min-height: 100svh;       /* viewport real en mobile */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(3rem, 8vw, 6rem) var(--gutter);
  isolation: isolate;
  overflow: hidden;
}
/* Skyline de Monterrey detrás del logo + tagline.
   Fondo oscuro natural de la imagen, sólo un velo ligero para
   asegurar contraste con el logo blanco. */
.cierre::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("assets/img-mty_2.jpg");
  background-image: -webkit-image-set(
    url("assets/img-mty_2.webp") type("image/webp"),
    url("assets/img-mty_2.jpg") type("image/jpeg")
  );
  background-image: image-set(
    url("assets/img-mty_2.webp") type("image/webp"),
    url("assets/img-mty_2.jpg") type("image/jpeg")
  );
  background-size: cover;
  background-position: center;
  filter: grayscale(100%) contrast(1.05);
  opacity: 0.9;
  pointer-events: none;
  z-index: -1;
}
.cierre::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(29,29,27,0.20) 0%,
    rgba(29,29,27,0.35) 60%,
    rgba(29,29,27,0.55) 100%);
  pointer-events: none;
  z-index: -1;
}
.cierre > * { position: relative; z-index: 1; }

.cierre__logo {
  height: 38px;
  margin: 0 auto 1.25rem;
  width: auto;
  max-width: none;
  aspect-ratio: 12 / 1;
  filter: invert(1) brightness(2); /* logo blanco sobre fondo oscuro */
}
@media (max-width: 480px) {
  .cierre__logo { height: 28px; }
}
.cierre__tag {
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin: 0;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3rem, 5vw, 4.5rem) 0 1.75rem;
}
.footer__top {
  display: grid;
  gap: 2rem;
  align-items: start;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.18);
}
.footer__brand { display: grid; gap: 1rem; }
.footer__logo {
  height: 26px;
  width: auto;
  max-width: none;
  aspect-ratio: 12 / 1;
  filter: invert(1) brightness(2);
}
@media (max-width: 480px) {
  .footer__logo { height: 22px; }
}
.footer__disclaimer {
  font-size: 0.82rem;
  line-height: 1.6;
  /* WCAG AA: 0.65 da ~6.7:1 sobre --ink, antes 0.5 quedaba borderline (~5.1:1). */
  color: rgba(255,255,255,0.65);
  margin: 0;
  max-width: 38ch;
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.footer__links a {
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
}
.footer__links a:hover { opacity: 0.6; }

.footer__social { color: var(--paper); }

.footer__bottom {
  margin-top: 1.75rem;
  font-size: 0.75rem;
  /* WCAG AA: 0.6 da ~6.3:1 sobre --ink, antes 0.45 fallaba (~4.3:1). */
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.06em;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer__bottom p { margin: 0; }
.footer__legal { color: rgba(255,255,255,0.6); text-decoration: underline; }
.footer__legal:hover { color: var(--paper); }
@media (min-width: 768px) {
  .footer__bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}

@media (min-width: 768px) {
  .footer__top {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 3rem;
  }
}

/* ===== ACCESSIBILITY HELPERS ===== */
:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
.nav .nav__link:focus-visible,
.nav .nav__cta:focus-visible,
.hero a:focus-visible,
.proceso a:focus-visible,
.footer a:focus-visible,
.social--light a:focus-visible {
  outline-color: var(--paper);
}

/* ===== MOTION OPTIONS ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0ms !important;
  }
}