/* ============================================================================
   ESTUDIO FASE INGENIERÍA — style.css
   CSS3 moderno, sin frameworks. Mobile-first. Organizado por bloques.

   ÍNDICE
   01. Variables (design tokens)
   02. Reset y base
   03. Utilidades (container, sr-only, skip-link, eyebrow, botones...)
   04. Header y navegación
   05. Hero
   06. Nuestro compromiso
   07. Sección genérica (cabeceras de sección reutilizables)
   08. Servicios
   09. Trabajamos para (sectores)
   10. Cómo trabajamos (timeline)
   11. Nuestro equipo
   12. Confianza y colaboraciones
   13. Preguntas frecuentes
   14. CTA final
   15. Contacto y formulario
   16. Footer
   17. Botón volver arriba
   18. Animaciones on-scroll
   19. Media queries generales (tablet / desktop)
   20. Accesibilidad: reduced motion y focus
   ============================================================================ */


/* ============================================================================
   01. VARIABLES (DESIGN TOKENS)
   ============================================================================ */
:root {
  /* --- Color: identidad corporativa verde (logo), con variantes accesibles --- */
  --color-graphite: #1F2A33;       /* Grafito — títulos principales y fondos oscuros */
  --color-graphite-soft: #2A3743;  /* Variante para hovers sobre fondo oscuro */
  --color-bone: #FAFAF8;           /* Blanco roto — fondo principal */
  --color-bone-dim: #F1EFEA;       /* Fondo secundario neutro (no verde), para alternar secciones */
  --color-gray: #5C6670;           /* Gris medio — texto de apoyo / párrafos */
  --color-gray-light: #D9DCDE;     /* Gris claro — bordes y líneas */
  --color-green: #7ED957;          /* Verde corporativo — botones, iconos e acentos sobre fondo OSCURO */
  --color-green-hover: #5FBF3F;    /* Verde hover/activo — estados interactivos de botones */
  --color-green-text: #377D25;     /* Verde oscurecido — texto, enlaces y bordes sobre fondo CLARO (cumple 4.5:1) */
  --color-green-soft: #EAF8E3;     /* Verde muy suave — fondos destacados puntuales */
  --color-ink: #17212A;            /* Casi negro, para texto principal */

  /* --- Tipografía --- */
  --font-display: 'Manrope', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;

  /* --- Tamaños tipográficos (mobile-first, escalan en media queries) --- */
  --fs-h1: 2.25rem;      /* 36px */
  --fs-h2: 1.75rem;      /* 28px */
  --fs-h3: 1.25rem;      /* 20px */
  --fs-lead: 1.125rem;   /* 18px */
  --fs-body: 1rem;       /* 16px */
  --fs-small: 0.875rem;  /* 14px */
  --fs-eyebrow: 0.8125rem; /* 13px */

  /* --- Espaciado (escala de 8px) --- */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* --- Layout --- */
  --container-max: 1180px;
  --container-padding: 1.25rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* --- Sombras (muy sutiles, según dirección de arte) --- */
  --shadow-sm: 0 4px 20px rgba(20, 24, 28, 0.05);
  --shadow-md: 0 12px 40px rgba(20, 24, 28, 0.08);

  /* --- Transiciones --- */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 200ms;
  --duration-base: 350ms;
  --duration-slow: 600ms;

  /* --- Header --- */
  --header-height: 260px;
  --header-height-scrolled: 80px;
}


/* ============================================================================
   02. RESET Y BASE
   ============================================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* Evita que el header fijo tape el inicio de cada sección al navegar por anclas */
section[id],
main[id] {
  scroll-margin-top: var(--header-height-scrolled);
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--color-ink);
  background-color: var(--color-bone);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* Los iconos de servicio/sector usan relleno sólido en vez de trazo */
.service-card__icon,
.sector-card__icon,
.commitment-card__icon,
#icon-bolt {
  fill: currentColor;
  stroke: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-graphite);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.015em;
}

h1 { font-size: var(--fs-h1); line-height: 1.08; letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-weight: 600; letter-spacing: -0.01em; }

p {
  color: var(--color-gray);
}

/* Los párrafos que siguen inmediatamente a un titular ganan un respiro fijo,
   evitando que dependa del margen suelto de cada bloque */
h2 + p,
h3 + p {
  margin-top: 0.6em;
}

::selection {
  background-color: var(--color-green);
  color: var(--color-graphite);
}


/* ============================================================================
   03. UTILIDADES
   ============================================================================ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.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;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-2);
  z-index: 999;
  padding: var(--space-2) var(--space-3);
  background: var(--color-graphite);
  color: var(--color-bone);
  border-radius: var(--radius-sm);
  transition: top var(--duration-fast) var(--ease-standard);
}

.skip-link:focus {
  top: var(--space-2);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-green-text);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.eyebrow span[aria-hidden] {
  color: var(--color-gray-light);
  font-weight: 700;
}

.eyebrow--light {
  color: rgba(250, 250, 248, 0.75);
}

/* --- Botones --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-base) var(--ease-standard),
              color var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-graphite);
  color: var(--color-bone);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-green);
  color: var(--color-graphite);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-graphite);
  border: 1px solid var(--color-gray-light);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--color-green-text);
  color: var(--color-green-text);
  background-color: rgba(126, 217, 87, 0.08);
}

.btn--large {
  padding: 1.15rem 2.5rem;
  font-size: var(--fs-body);
}

.btn--full {
  width: 100%;
}

.link-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: 600;
  color: var(--color-graphite);
  position: relative;
  transition: gap var(--duration-base) var(--ease-standard), color var(--duration-base) var(--ease-standard);
}

.link-cta:hover,
.link-cta:focus-visible {
  gap: 0.75rem;
  color: var(--color-green-text);
}

.link-cta svg {
  transition: transform var(--duration-base) var(--ease-standard);
}

.link-cta:hover svg {
  transform: translateX(3px);
}


/* ============================================================================
   04. HEADER Y NAVEGACIÓN
   ============================================================================ */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color var(--duration-base) var(--ease-standard),
              height var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled {
  height: var(--header-height-scrolled);
  background-color: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.brand__logo {
  height: 240px;
  width: auto;
  transition: height var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled .brand__logo {
  height: 56px;
}

.footer__logo {
  height: 100px;
  width: auto;
  margin-bottom: var(--space-2);
}

/* Navegación de escritorio: oculta en móvil */
.nav {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__link {
  position: relative;
  font-size: var(--fs-small);
  font-weight: 500;
  color: rgba(250, 250, 248, 0.9);
  padding-block: var(--space-1);
  transition: color var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled .nav__link {
  color: var(--color-graphite);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: -2px;
  height: 1.5px;
  background-color: var(--color-green);
  transition: left var(--duration-base) var(--ease-standard), right var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled .nav__link::after {
  background-color: var(--color-green-text);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
  left: 0;
  right: 0;
}

.nav__link--cta {
  border: 1px solid rgba(250, 250, 248, 0.4);
  border-radius: var(--radius-sm);
  padding: 0.55rem 1.1rem;
}

.site-header.is-scrolled .nav__link--cta {
  border-color: var(--color-gray-light);
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover,
.nav__link--cta:focus-visible {
  border-color: var(--color-green);
  color: var(--color-green);
}

.site-header.is-scrolled .nav__link--cta:hover,
.site-header.is-scrolled .nav__link--cta:focus-visible {
  border-color: var(--color-green-text);
  color: var(--color-green-text);
}

/* Botón hamburguesa (visible en móvil) */
.nav-toggle {
  position: relative;
  z-index: 110;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-bone);
  transition: color var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled .nav-toggle {
  color: var(--color-graphite);
}

.nav-toggle__icon {
  position: absolute;
  transition: opacity var(--duration-fast) var(--ease-standard), transform var(--duration-fast) var(--ease-standard);
}

.nav-toggle__icon--close {
  opacity: 0;
  transform: rotate(-90deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon--open {
  opacity: 0;
  transform: rotate(90deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon--close {
  opacity: 1;
  transform: rotate(0deg);
}

/* Menú móvil a pantalla completa */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 105;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: var(--color-graphite);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--duration-base) var(--ease-standard),
              visibility var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.mobile-menu__link {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-bone);
}

.mobile-menu__link:hover,
.mobile-menu__link:focus-visible {
  color: var(--color-green);
}

.mobile-menu__link--cta {
  color: var(--color-green);
}

.mobile-menu__footer {
  position: absolute;
  bottom: var(--space-5);
}

.mobile-menu__contact {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: rgba(250, 250, 248, 0.8);
  font-size: var(--fs-small);
}


/* ============================================================================
   05. HERO
   ============================================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: hero-ken-burns 14s ease-out forwards;
}

@keyframes hero-ken-burns {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(31, 42, 51, 0.75) 0%, rgba(31, 42, 51, 0.55) 45%, rgba(31, 42, 51, 0.85) 100%);
}

.hero__content {
  padding-block: calc(var(--header-height) + var(--space-5)) var(--space-6);
}

.hero__eyebrow-anim,
.hero__title,
.hero__subtitle,
.hero__actions,
.hero__badges {
  opacity: 0;
  transform: translateY(16px);
  animation: hero-rise 800ms var(--ease-standard) forwards;
}

.hero .eyebrow--light { animation: hero-rise 800ms var(--ease-standard) forwards; opacity: 0; transform: translateY(16px); animation-delay: 80ms; }
.hero__title { animation-delay: 200ms; }
.hero__subtitle { animation-delay: 340ms; }
.hero__actions { animation-delay: 480ms; }
.hero__badges { animation-delay: 620ms; }

@keyframes hero-rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__title {
  color: var(--color-bone);
  font-size: var(--fs-h1);
  max-width: 16ch;
  margin-bottom: var(--space-3);
}

.hero__subtitle {
  color: rgba(250, 250, 248, 0.85);
  font-size: var(--fs-lead);
  max-width: 46ch;
  margin-bottom: var(--space-4);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.hero__actions .btn--ghost {
  color: var(--color-bone);
  border-color: rgba(250, 250, 248, 0.4);
}

.hero__actions .btn--ghost:hover,
.hero__actions .btn--ghost:focus-visible {
  border-color: var(--color-green);
  color: var(--color-green);
  background-color: rgba(250, 250, 248, 0.06);
}

/* Banda de mensajes clave integrada en el hero */
.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(250, 250, 248, 0.18);
}

.hero__badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: rgba(250, 250, 248, 0.92);
  font-size: var(--fs-small);
  font-weight: 500;
}

.hero__badge svg {
  color: var(--color-green);
  fill: none;
}

.hero__scroll-cue {
  position: absolute;
  bottom: var(--space-3);
  left: 50%;
  transform: translateX(-50%);
  color: rgba(250, 250, 248, 0.7);
  animation: hero-bounce 2.2s ease-in-out infinite;
}

@keyframes hero-bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 6px); }
}


/* ============================================================================
   06. NUESTRO COMPROMISO
   ============================================================================ */
.commitment {
  background-color: var(--color-green-soft);
  padding-block: var(--space-6);
}

.commitment__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.commitment-card {
  text-align: center;
  padding: var(--space-4) var(--space-3);
  background-color: #FFFFFF;
  border: 1px solid rgba(31, 42, 51, 0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

.commitment-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-green);
  transform: translateY(-3px);
}

.commitment-card__number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-green-text);
  line-height: 1;
}

.commitment-card__plus {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-green-text);
}

.commitment-card__icon {
  display: inline-block;
  width: 44px;
  height: 44px;
  padding: 10px;
  box-sizing: border-box;
  background-color: var(--color-green-soft);
  border-radius: 50%;
  color: var(--color-graphite);
  margin-bottom: var(--space-2);
}

.commitment-card__title {
  color: var(--color-graphite);
  font-size: 1.05rem;
  margin-block: var(--space-1);
}

.commitment-card__text {
  color: var(--color-gray);
  font-size: var(--fs-small);
  max-width: 26ch;
  margin-inline: auto;
}


/* ============================================================================
   07. SECCIÓN GENÉRICA
   ============================================================================ */
.section {
  padding-block: var(--space-7);
}

.section__header {
  max-width: 62ch;
  margin-bottom: var(--space-5);
}

.section__title {
  margin-bottom: var(--space-2);
}

.section__lead {
  font-size: var(--fs-lead);
}

.section__footer-cta {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  justify-content: center;
  text-align: center;
}


/* ============================================================================
   08. SERVICIOS
   ============================================================================ */
.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.service-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

.service-card:hover,
.service-card:focus-within {
  border-color: var(--color-green-text);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.service-card__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
}

.service-card__summary::-webkit-details-marker {
  display: none;
}

.service-card__icon {
  grid-row: span 2;
  width: 44px;
  height: 44px;
  padding: 10px;
  box-sizing: border-box;
  background-color: var(--color-green-soft);
  border-radius: 50%;
  color: var(--color-graphite);
  transition: color var(--duration-base) var(--ease-standard);
}

.service-card:hover .service-card__icon {
  color: var(--color-green-text);
}

.service-card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-graphite);
}

.service-card__short {
  grid-column: 2;
  font-size: var(--fs-small);
  color: var(--color-gray);
}

.service-card__chevron {
  color: var(--color-gray);
  transition: transform var(--duration-base) var(--ease-standard);
}

.service-card[open] .service-card__chevron {
  transform: rotate(180deg);
}

.service-card__detail {
  padding: 0 var(--space-3) var(--space-3) calc(28px + var(--space-2) + var(--space-3));
  font-size: var(--fs-small);
}

@media (max-width: 599px) {
  .service-card__summary {
    grid-template-columns: auto 1fr auto;
  }
  .service-card__detail {
    padding-inline-start: var(--space-3);
  }
}


/* ============================================================================
   09. TRABAJAMOS PARA (SECTORES)
   ============================================================================ */
.sectors__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.sector-card {
  padding: var(--space-4) var(--space-3);
  background-color: #FFFFFF;
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

.sector-card:hover,
.sector-card:focus-within {
  border-color: var(--color-green);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.sector-card__icon {
  display: inline-block;
  width: 48px;
  height: 48px;
  padding: 11px;
  box-sizing: border-box;
  background-color: var(--color-green-soft);
  border-radius: 50%;
  color: var(--color-graphite);
  margin-bottom: var(--space-2);
}

.sector-card__title {
  color: var(--color-graphite);
  font-size: 1.05rem;
  margin-bottom: var(--space-1);
}

.sector-card__text {
  color: var(--color-gray);
  font-size: var(--fs-small);
}


/* ============================================================================
   10. CÓMO TRABAJAMOS (TIMELINE)
   ============================================================================ */
.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  counter-reset: step;
}

.timeline__step {
  position: relative;
  padding-left: var(--space-4);
  border-left: 2px solid var(--color-gray-light);
  transition: border-color var(--duration-base) var(--ease-standard);
}

.timeline__step:hover {
  border-left-color: var(--color-green-text);
}

.timeline__number {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-green-text);
  margin-bottom: var(--space-1);
}

.timeline__title {
  margin-bottom: var(--space-1);
}

.timeline__text {
  font-size: var(--fs-small);
}


/* ============================================================================
   11. NUESTRO EQUIPO
   ============================================================================ */
.team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
}

.team__media img {
  border-radius: var(--radius-lg);
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.team__text {
  margin-bottom: var(--space-3);
}

.pull-quote {
  border-left: 3px solid var(--color-green-text);
  padding-left: var(--space-3);
  margin-block: var(--space-4);
}

.pull-quote p {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-graphite);
  line-height: 1.4;
}


/* ============================================================================
   12. CONFIANZA Y COLABORACIONES
   ============================================================================ */
.trust {
  background-color: var(--color-green-soft);
}

.trust__inner {
  max-width: 68ch;
  text-align: center;
}

.trust__inner .eyebrow {
  justify-content: center;
}

.trust__text {
  font-size: var(--fs-lead);
  margin-top: var(--space-2);
}

.trust__placeholder {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.trust__placeholder-item {
  width: 120px;
  height: 48px;
  background-color: var(--color-gray-light);
  border-radius: var(--radius-sm);
  opacity: 0.5;
}


/* ============================================================================
   13. PREGUNTAS FRECUENTES
   ============================================================================ */
.faq__inner {
  max-width: 74ch;
}

.faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

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

.faq-item__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-block: var(--space-2);
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-graphite);
  list-style: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

.faq-item__summary:hover,
.faq-item__summary:focus-visible {
  color: var(--color-green-text);
}

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

.faq-item__chevron {
  color: var(--color-gray);
  transition: transform var(--duration-base) var(--ease-standard);
  flex-shrink: 0;
}

.faq-item[open] .faq-item__chevron {
  transform: rotate(180deg);
}

.faq-item__answer {
  padding-bottom: var(--space-3);
  font-size: var(--fs-small);
  max-width: 60ch;
}


/* ============================================================================
   14. CTA FINAL
   ============================================================================ */
.cta-final {
  background-color: var(--color-graphite);
  padding-block: var(--space-7);
  text-align: center;
}

.cta-final__inner {
  max-width: 52ch;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.cta-final__title {
  color: var(--color-bone);
  font-size: 2rem;
}

.cta-final__text {
  color: rgba(250, 250, 248, 0.75);
  font-size: var(--fs-lead);
}

.cta-final .btn--primary {
  background-color: var(--color-green);
  color: var(--color-graphite);
}

.cta-final .btn--primary:hover,
.cta-final .btn--primary:focus-visible {
  background-color: var(--color-green-hover);
}


/* ============================================================================
   15. CONTACTO Y FORMULARIO
   ============================================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.contact__text {
  font-size: var(--fs-lead);
  margin-block: var(--space-2) var(--space-4);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contact__detail {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--color-graphite);
  transition: color var(--duration-base) var(--ease-standard);
}

.contact__detail svg {
  color: var(--color-green-text);
}

.contact__detail:hover,
.contact__detail:focus-visible {
  color: var(--color-green-text);
}

.contact__form {
  background-color: #FFFFFF;
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-field label {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-graphite);
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="tel"],
.form-field select,
.form-field textarea {
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  background-color: var(--color-bone);
  transition: border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard);
}

.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: none;
  border-color: var(--color-green-text);
  box-shadow: 0 0 0 3px rgba(126, 217, 87, 0.25);
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-field--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.6rem;
}

.form-field--checkbox input {
  margin-top: 0.2rem;
  accent-color: var(--color-green-hover);
}

.form-field--checkbox label {
  font-weight: 400;
  color: var(--color-gray);
}

.form-field--checkbox label a {
  color: var(--color-graphite);
  text-decoration: underline;
}

.form-field__error {
  font-size: 0.8rem;
  color: #B23A3A;
  min-height: 1.1em;
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: #B23A3A;
}

.form-status {
  font-size: var(--fs-small);
  font-weight: 600;
  text-align: center;
  min-height: 1.2em;
}

.form-status.is-success {
  color: #2E7D4F;
}

.form-status.is-error {
  color: #B23A3A;
}


/* ============================================================================
   16. FOOTER
   ============================================================================ */
.site-footer {
  background-color: var(--color-graphite);
  padding-top: var(--space-6);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid rgba(250, 250, 248, 0.12);
}

.footer__claim {
  color: var(--color-green);
  font-family: var(--font-display);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.footer__text {
  color: rgba(250, 250, 248, 0.6);
  font-size: var(--fs-small);
  max-width: 42ch;
}

.footer__nav-title {
  color: rgba(250, 250, 248, 0.9);
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}

.footer__nav ul,
.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer__nav a,
.footer__contact a {
  color: rgba(250, 250, 248, 0.65);
  font-size: var(--fs-small);
  transition: color var(--duration-fast) var(--ease-standard);
}

.footer__nav a:hover,
.footer__contact a:hover {
  color: var(--color-green);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

.footer__bottom p {
  color: rgba(250, 250, 248, 0.5);
  font-size: 0.8rem;
}


/* ============================================================================
   17. BOTÓN VOLVER ARRIBA
   ============================================================================ */
.back-to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(250, 250, 248, 0.25);
  color: rgba(250, 250, 248, 0.8);
  transition: border-color var(--duration-base) var(--ease-standard),
              color var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  border-color: var(--color-green);
  color: var(--color-green);
  transform: translateY(-3px);
}

/* Botón flotante que aparece tras hacer scroll (variante fija, activada por JS) */
.back-to-top.is-floating {
  position: fixed;
  bottom: var(--space-3);
  right: var(--space-3);
  z-index: 90;
  background-color: var(--color-graphite);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
}

.back-to-top.is-floating.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}


/* ============================================================================
   18. ANIMACIONES ON-SCROLL
   ============================================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-standard),
              transform var(--duration-slow) var(--ease-standard);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="1"] { transition-delay: 100ms; }
[data-reveal-delay="2"] { transition-delay: 200ms; }
[data-reveal-delay="3"] { transition-delay: 300ms; }


/* ============================================================================
   19. MEDIA QUERIES GENERALES
   ============================================================================ */

/* --- Tablet (>= 600px) --- */
@media (min-width: 600px) {
  :root {
    --fs-h1: 3rem;
    --fs-h2: 2.25rem;
  }

  .commitment__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sectors__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer__inner {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

/* --- Desktop pequeño (>= 900px) --- */
@media (min-width: 900px) {
  :root {
    --fs-h1: 3.75rem;
    --fs-h2: 2.5rem;
    --container-padding: 2rem;
  }

  .nav {
    display: block;
  }

  .nav-toggle {
    display: none;
  }

  .section {
    padding-block: var(--space-8);
  }

  .section__header {
    margin-bottom: var(--space-6);
  }

  .services__grid,
  .sectors__grid {
    gap: var(--space-3);
  }

  .hero__content {
    max-width: 640px;
  }

  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sectors__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .timeline {
    grid-template-columns: repeat(3, 1fr);
  }

  .team__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-6);
  }

  .team__media img {
    aspect-ratio: 3 / 4;
  }

  .contact__grid {
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-6);
  }
}

/* --- Desktop grande (>= 1200px) --- */
@media (min-width: 1200px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}


/* ============================================================================
   20. ACCESIBILIDAD: REDUCED MOTION Y FOCUS
   ============================================================================ */
:focus-visible {
  outline: 2px solid var(--color-green-text);
  outline-offset: 2px;
}

/* En secciones de fondo oscuro, el verde "de texto" (oscurecido para contraste
   sobre blanco) apenas se vería. Usamos ahí el verde corporativo brillante,
   que sí ofrece contraste sobrado sobre grafito. */
.hero :focus-visible,
.cta-final :focus-visible,
.site-footer :focus-visible,
.mobile-menu :focus-visible,
.site-header:not(.is-scrolled) :focus-visible {
  outline-color: var(--color-green);
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .hero__scroll-cue {
    animation: none;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}