/* ==========================================================================
   INDUSTRIA 3D — Hoja de estilos principal
   Sistema de diseño: fondo oscuro premium + acento ámbar.
   Organización: 1) Variables  2) Reset  3) Utilidades  4) Componentes
   5) Secciones  6) Animaciones  7) Responsive
   ========================================================================== */

/* ---------- 1. VARIABLES (tokens de diseño) ---------- */
:root {
  /* Colores de marca */
  --bg-dark: #14171C;
  --bg-dark-2: #1B1F26;
  --bg-dark-3: #20242C;
  --bg-light: #F4F5F6;
  --bg-light-2: #FFFFFF;
  --accent: #F2A03D;
  --accent-dark: #D98A26;
  --accent-soft: rgba(242, 160, 61, 0.12);
  --accent-soft-2: rgba(242, 160, 61, 0.22);

  /* Texto */
  --ink: #14171C;
  --ink-muted: rgba(20, 23, 28, 0.66);
  --ink-faint: rgba(20, 23, 28, 0.4);
  --paper: #F4F5F6;
  --paper-muted: rgba(244, 245, 246, 0.68);
  --paper-faint: rgba(244, 245, 246, 0.42);

  /* Bordes y sombras */
  --border-on-dark: rgba(244, 245, 246, 0.1);
  --border-on-light: rgba(20, 23, 28, 0.1);
  --shadow-card: 0 10px 30px -14px rgba(20, 23, 28, 0.4);
  --shadow-card-hover: 0 20px 40px -16px rgba(20, 23, 28, 0.5);
  --shadow-amber: 0 12px 28px -12px rgba(242, 160, 61, 0.55);

  /* Tipografía */
  --ff-heading: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --ff-body: "Inter", "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --container: 1220px;
  --section-pad: clamp(4rem, 8vw, 7.5rem);
  --section-pad-sm: clamp(2.5rem, 5vw, 4rem);
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --radius-sm: 0.45rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.1rem;

  /* Movimiento */
  --ease: cubic-bezier(0.16, 0.8, 0.3, 1);
  --dur-fast: 0.2s;
  --dur-med: 0.45s;
  --dur-slow: 0.8s;

  color-scheme: dark;
}

/* ---------- 2. RESET ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

h1, h2, h3, h4 {
  font-family: var(--ff-heading);
  font-weight: 700;
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

/* Foco visible accesible en toda la web */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: var(--accent);
  color: var(--ink);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 9999;
  transition: top var(--dur-fast) var(--ease);
}

.skip-link:focus {
  top: 1rem;
}

/* ---------- 3. UTILIDADES ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section--sm {
  padding-block: var(--section-pad-sm);
}

.section--dark {
  background: var(--bg-dark);
  color: var(--paper);
}

.section--light {
  background: var(--bg-light);
  color: var(--ink);
}

.section-head {
  max-width: 42rem;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.eyebrow::before {
  content: "";
  width: 1.4rem;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}

.section-head h2 {
  font-size: clamp(1.9rem, 3vw + 1rem, 2.75rem);
}

.section-head p {
  margin-top: 1rem;
  font-size: 1.05rem;
  color: var(--ink-muted);
}

.section--dark .section-head p {
  color: var(--paper-muted);
}

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

.u-amber {
  color: var(--accent);
}

/* Separador tipo "capa de impresión 3D" entre secciones */
.layer-divider {
  height: 10px;
  width: 100%;
  background-image: repeating-linear-gradient(
    90deg,
    var(--accent-soft) 0px,
    var(--accent-soft) 18px,
    transparent 18px,
    transparent 36px
  );
  opacity: 0.6;
}

.layer-divider--dark {
  background-image: repeating-linear-gradient(
    90deg,
    rgba(242, 160, 61, 0.28) 0px,
    rgba(242, 160, 61, 0.28) 18px,
    transparent 18px,
    transparent 36px
  );
}

/* ---------- 4. COMPONENTES ---------- */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 1.85rem;
  border-radius: var(--radius-sm);
  font-family: var(--ff-body);
  font-weight: 600;
  font-size: 0.98rem;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.btn .icon {
  width: 1.1rem;
  height: 1.1rem;
}

.btn--primary {
  background: var(--accent);
  color: var(--ink);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-amber);
}

.btn--outline {
  background: transparent;
  border: 1.5px solid var(--border-on-dark);
  color: var(--paper);
}

.section--light .btn--outline {
  border-color: var(--border-on-light);
  color: var(--ink);
}

.btn--outline:hover,
.btn--outline:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn--whatsapp {
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
}

.btn--whatsapp:hover,
.btn--whatsapp:focus-visible {
  background: var(--accent);
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: var(--shadow-amber);
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* Icono genérico */
.icon {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
}

/* ---------- Cabecera ---------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 1000;
  background: rgba(20, 23, 28, 0.82);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}

/* El desenfoque va en un pseudo-elemento (y no en .site-header) a propósito:
   "backdrop-filter" convertiría la cabecera en el contenedor de posicionamiento
   de sus elementos "fixed" (como el menú móvil), impidiendo que éste cubra
   toda la pantalla. */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border-on-dark);
  background: rgba(20, 23, 28, 0.96);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.1rem;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 0.15rem;
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.logo {
  flex-shrink: 0;
}

.logo__img {
  display: block;
  height: 44px;
  width: auto;
}

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

.logo__accent {
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

.main-nav__link {
  position: relative;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--paper-muted);
  padding-block: 0.3rem;
  transition: color var(--dur-fast) var(--ease);
}

.main-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease);
}

.main-nav__link:hover,
.main-nav__link:focus-visible {
  color: var(--paper);
}

.main-nav__link:hover::after,
.main-nav__link:focus-visible::after {
  transform: scaleX(1);
}

.main-nav__link[aria-current="page"] {
  color: var(--accent);
}

.main-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-actions .btn {
  padding: 0.75rem 1.4rem;
  font-size: 0.92rem;
}

/* En escritorio, el botón de presupuesto solo se muestra una vez
   (fuera del menú); la copia de dentro del menú es solo para móvil */
.main-nav .header-actions {
  display: none;
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 1010;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  color: var(--paper);
  border-radius: var(--radius-sm);
}

.nav-toggle .icon {
  width: 1.6rem;
  height: 1.6rem;
}

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

.nav-toggle[aria-expanded="true"] .icon--menu {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon--close {
  display: block;
}

/* ---------- Pie de página ---------- */
.site-footer {
  background: var(--bg-dark);
  color: var(--paper-muted);
  padding-block: 3.5rem 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-on-dark);
}

.footer-brand p {
  margin-top: 1rem;
  max-width: 26rem;
  font-size: 0.95rem;
}

.footer-heading {
  font-family: var(--ff-body);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--paper);
  margin-bottom: 1rem;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  font-size: 0.95rem;
  transition: color var(--dur-fast) var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--accent);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}

.footer-contact .icon {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding-top: 1.75rem;
  font-size: 0.85rem;
}

.social-list {
  display: flex;
  gap: 0.75rem;
}

.social-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 1px solid var(--border-on-dark);
  color: var(--paper-muted);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.social-list svg {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
}

.social-list a:hover,
.social-list a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- Placeholder de imagen editable ---------- */
.img-placeholder {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-dark-3), var(--bg-dark));
  border: 1px dashed rgba(242, 160, 61, 0.35);
}

/* Una vez la foto real ha cargado, el marco discontinuo (guía de edición)
   deja de mostrarse: script.js añade esta clase en el evento "load" */
.img-placeholder--filled {
  border-color: transparent;
  background: none;
}

.img-placeholder::after {
  content: attr(data-label);
  white-space: pre-line;
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.25rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--accent);
  font-family: var(--ff-body);
  pointer-events: none;
}

.img-placeholder img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 5. SECCIONES ---------- */

/* Hero */
.hero {
  position: relative;
  background: var(--bg-dark);
  color: var(--paper);
  padding-block: clamp(8.5rem, 16vw, 11rem) clamp(4.5rem, 8vw, 6rem);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244, 245, 246, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 245, 246, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  pointer-events: none;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero__title {
  font-size: clamp(2.4rem, 3vw + 1.6rem, 3.9rem);
  color: var(--paper);
}

.hero__title .u-underline {
  position: relative;
  white-space: nowrap;
}

.hero__title .u-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.05em;
  width: 100%;
  height: 0.14em;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  animation: draw-underline 1s var(--ease) 0.9s forwards;
}

.hero__subtitle {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  color: var(--paper-muted);
  max-width: 34rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.25rem;
}

.hero__media {
  position: relative;
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 5;
}

.hero__media .img-placeholder {
  border-radius: var(--radius-lg);
}

/* Página secundaria - hero corto */
.page-hero {
  background: var(--bg-dark);
  color: var(--paper);
  padding-block: clamp(7.5rem, 14vw, 9.5rem) clamp(3rem, 6vw, 4.5rem);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244, 245, 246, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 245, 246, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 40%, transparent 100%);
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 44rem;
}

.page-hero h1 {
  font-size: clamp(2.1rem, 3vw + 1.2rem, 3.1rem);
}

.page-hero p {
  margin-top: 1.25rem;
  font-size: 1.05rem;
  color: var(--paper-muted);
}

/* Banda de cifras */
.stats-band {
  background: var(--bg-dark);
  color: var(--paper);
  padding-block: clamp(2.75rem, 5vw, 4rem);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  padding-inline-start: 1.25rem;
  border-inline-start: 2px solid var(--accent-soft-2);
}

.stat-item .icon {
  color: var(--accent);
  width: 1.7rem;
  height: 1.7rem;
}

.stat-number {
  font-family: var(--ff-heading);
  font-size: clamp(1.9rem, 2vw + 1.2rem, 2.5rem);
  font-weight: 700;
  color: var(--paper);
  line-height: 1;
}

.stat-number .u-amber {
  color: var(--accent);
}

.stat-label {
  font-size: 0.92rem;
  color: var(--paper-muted);
  line-height: 1.45;
}

/* Tarjetas de servicio / capacidad */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
  /* Evita que la rejilla estire las tarjetas a la altura de la imagen:
     con "aspect-ratio" en la imagen, el estiramiento por defecto de Grid
     puede recortar el texto que va debajo. */
  align-items: start;
}

.feature-card {
  background: var(--bg-light-2);
  border: 1px solid var(--border-on-light);
  border-radius: var(--radius-md);
  padding: 2rem 1.6rem;
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--accent-soft-2);
}

.feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--ink-muted);
}

/* Pasos numerados (cómo trabajamos / cómo pedir) */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

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

.step-card {
  position: relative;
  padding: 2rem 1.75rem 1.75rem;
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-md);
  background: var(--bg-dark-2);
}

.section--light .step-card {
  background: var(--bg-light-2);
  border-color: var(--border-on-light);
}

.step-card__number {
  font-family: var(--ff-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  display: block;
}

.step-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 1.1rem;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.55rem;
  color: var(--paper);
}

.section--light .step-card h3 {
  color: var(--ink);
}

.step-card p {
  font-size: 0.94rem;
  color: var(--paper-muted);
}

.section--light .step-card p {
  color: var(--ink-muted);
}

/* Frase destacada */
.quote-band {
  background: var(--bg-light);
  padding-block: clamp(3.5rem, 7vw, 5.5rem);
}

.quote-band__text {
  max-width: 52rem;
  margin-inline: auto;
  text-align: center;
  font-family: var(--ff-heading);
  font-size: clamp(1.4rem, 1.6vw + 1.1rem, 2rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.quote-band__text .u-amber {
  color: var(--accent);
}

/* Trabajos destacados / proyectos */
.work-card {
  display: block;
  background: var(--bg-light-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-on-light);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.work-card__media {
  aspect-ratio: 4 / 3;
}

.work-card__body {
  padding: 1.5rem 1.5rem 1.75rem;
}

.work-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.55rem;
}

.work-card p {
  font-size: 0.94rem;
  color: var(--ink-muted);
}

.work-card__result {
  display: block;
  margin-top: 0.9rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-dark);
}

.section-cta-row {
  display: flex;
  justify-content: center;
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}

/* CTA final ámbar */
.cta-band {
  background: var(--accent);
  color: var(--ink);
  padding-block: clamp(3.5rem, 7vw, 5.5rem);
  text-align: center;
}

.cta-band h2 {
  font-size: clamp(1.8rem, 2.4vw + 1.2rem, 2.6rem);
  color: var(--ink);
}

.cta-band p {
  margin-top: 0.85rem;
  font-size: 1.05rem;
  color: rgba(20, 23, 28, 0.75);
}

.cta-band .btn-row {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.cta-band .btn--primary {
  background: var(--ink);
  color: var(--paper);
}

.cta-band .btn--primary:hover,
.cta-band .btn--primary:focus-visible {
  background: #24282f;
  box-shadow: 0 12px 28px -12px rgba(20, 23, 28, 0.55);
}

/* Aviso destacado de un servicio adicional (p. ej. mantenimiento) */
.service-promo {
  background: var(--bg-dark);
  color: var(--paper);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
}

.service-promo .section-head {
  margin-inline: auto;
}

.service-promo .section-head p {
  color: var(--paper-muted);
  margin-inline: auto;
  max-width: 38rem;
}

.service-promo-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2.5rem;
  margin: 2rem 0 2.5rem;
}

.service-promo-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.service-promo-features .icon {
  color: var(--accent);
  width: 1.3rem;
  height: 1.3rem;
  flex-shrink: 0;
}

.service-promo .btn-row {
  display: flex;
  justify-content: center;
}

/* Banner de imagen panorámico (p. ej. cabecera de página de mantenimiento) */
.media-banner {
  aspect-ratio: 21 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

/* Bloques alternados de servicios */
.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(3rem, 6vw, 5rem);
}

.service-block:not(:last-child) {
  border-bottom: 1px solid var(--border-on-light);
}

.service-block--reverse .service-block__media {
  order: 2;
}

.service-block__media {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.service-block__media .img-placeholder {
  border-radius: var(--radius-lg);
}

.service-block__index {
  font-family: var(--ff-heading);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  margin-bottom: 0.9rem;
  display: block;
}

.service-block h2 {
  font-size: clamp(1.5rem, 1.6vw + 1.1rem, 2rem);
  margin-bottom: 0.9rem;
}

.service-block p {
  color: var(--ink-muted);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.advantage-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.96rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.advantage-list .icon-check {
  color: var(--accent);
  width: 1.2rem;
  height: 1.2rem;
  margin-top: 0.1rem;
}

/* Materiales y tecnologías */
.materials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

.material-card {
  background: var(--bg-dark-2);
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
}

.material-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.material-card h3 {
  font-size: 1.3rem;
  color: var(--paper);
  margin-bottom: 0.75rem;
}

.material-card p {
  color: var(--paper-muted);
  font-size: 0.98rem;
}

/* Proyectos - rejilla */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  /* Ver nota en .card-grid--3: evita que Grid recorte el texto de la tarjeta */
  align-items: start;
}

/* ---------- Página de contacto ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.contact-info {
  background: var(--bg-dark);
  color: var(--paper);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 2.75rem);
  position: sticky;
  top: 6.5rem;
}

.contact-info h2 {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
}

.contact-info > p {
  color: var(--paper-muted);
  font-size: 0.98rem;
  margin-bottom: 2rem;
}

.contact-info__list {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  margin-bottom: 2rem;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}

.contact-info__item .icon {
  color: var(--accent);
  width: 1.4rem;
  height: 1.4rem;
  margin-top: 0.15rem;
}

.contact-info__item h3 {
  font-family: var(--ff-body);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--paper-faint);
  margin-bottom: 0.25rem;
}

.contact-info__item a,
.contact-info__item p {
  font-size: 1rem;
  color: var(--paper);
}

.contact-info__item a {
  transition: color var(--dur-fast) var(--ease);
}

.contact-info__item a:hover,
.contact-info__item a:focus-visible {
  color: var(--accent);
}

.contact-form-wrap {
  background: var(--bg-light-2);
  border: 1px solid var(--border-on-light);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 2.75rem);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-field {
  margin-bottom: 1.4rem;
}

.form-field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.form-field .required {
  color: var(--accent-dark);
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="tel"],
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1.5px solid var(--border-on-light);
  border-radius: var(--radius-sm);
  background: var(--bg-light);
  font-size: 0.98rem;
  transition: border-color var(--dur-fast) var(--ease);
}

.form-field textarea {
  resize: vertical;
  min-height: 9rem;
}

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

.form-field input[aria-invalid="true"],
.form-field textarea[aria-invalid="true"] {
  border-color: #b3372f;
}

.form-field--file {
  border: 1.5px dashed var(--border-on-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  background: var(--bg-light);
}

.form-field--file .icon {
  color: var(--accent);
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.6rem;
}

.form-field--file label {
  display: block;
  cursor: pointer;
}

.form-field--file input[type="file"] {
  margin-top: 0.75rem;
  width: 100%;
  font-size: 0.88rem;
}

.form-field--file .file-hint {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--ink-muted);
}

.form-note {
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin-top: 0.75rem;
}

.form-status {
  margin-top: 1.1rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  display: none;
}

.form-status.is-visible {
  display: block;
}

.form-status--success {
  background: rgba(60, 160, 100, 0.12);
  color: #2a7a4f;
}

.form-status--error {
  background: rgba(200, 70, 70, 0.12);
  color: #b3372f;
}

/* Honeypot oculto anti-spam */
.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Mapa */
.map-section {
  position: relative;
}

.map-label {
  position: absolute;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  background: var(--bg-dark);
  color: var(--paper);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-card);
}

.map-label .icon {
  width: 1.1rem;
  height: 1.1rem;
  color: var(--accent);
}

.map-frame {
  display: block;
  width: 100%;
  height: 420px;
  border: 0;
  filter: grayscale(0.25) contrast(1.05);
}

/* FAQ acordeón */
.faq-list {
  max-width: 46rem;
  margin-inline: auto;
}

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0.25rem;
  text-align: left;
  font-family: var(--ff-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.faq-question .icon-chevron {
  color: var(--accent);
  transition: transform var(--dur-med) var(--ease);
  flex-shrink: 0;
}

.faq-question[aria-expanded="true"] .icon-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--dur-med) var(--ease);
}

.faq-answer__inner {
  padding: 0 0.25rem 1.5rem;
  font-size: 0.98rem;
  color: var(--ink-muted);
  max-width: 40rem;
}

/* ---------- 6. ANIMACIONES ---------- */
@keyframes draw-underline {
  to {
    transform: scaleX(1);
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
  transition-delay: var(--reveal-delay, 0s);
}

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

/* Red de seguridad: si el JS no carga, el contenido se ve igualmente */
.no-js .reveal,
.reveal[data-split] {
  opacity: 1;
  transform: none;
}

/* Transición de página (fundido) */
body {
  opacity: 1;
  transition: opacity 0.35s var(--ease);
}

body.is-page-loading {
  opacity: 0;
}

body.is-leaving {
  opacity: 0;
}

/* Parallax del hero */
.hero__media .img-placeholder {
  will-change: transform;
}

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

  .reveal {
    transition-duration: 0.01s;
  }

  .hero__title .u-underline::after {
    animation-duration: 0.01s;
  }

  body,
  body.is-page-loading,
  body.is-leaving {
    transition: none;
    opacity: 1;
  }
}

/* ---------- 7. RESPONSIVE ---------- */
@media (max-width: 1080px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 2.25rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 2.25rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .contact-info {
    position: static;
  }
}

@media (max-width: 980px) {
  .main-nav {
    position: fixed;
    inset: 0;
    top: 0;
    z-index: 1000;
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 6rem 1.75rem 2.5rem;
    gap: 2.5rem;
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease);
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .main-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.75rem;
  }

  .main-nav__link {
    font-size: 1.3rem;
  }

  .site-header__inner > .header-actions .btn--primary {
    display: none;
  }

  .main-nav .header-actions {
    display: flex;
    margin-top: 0.5rem;
  }

  .nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 860px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }

  .hero__media {
    aspect-ratio: 16 / 10;
    order: -1;
  }

  .service-block,
  .service-block--reverse .service-block__media {
    grid-template-columns: 1fr;
    order: 0;
  }

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

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

@media (max-width: 720px) {
  .card-grid,
  .card-grid--3,
  .steps-grid,
  .steps-grid--4,
  .projects-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .hero__actions,
  .cta-band .btn-row {
    flex-direction: column;
    align-items: stretch;
  }
}