/* Reset suave y tipografía profesional */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--gradient-body);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: var(--lh-comfortable);
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

h1,
h2,
h3,
h4 {
  color: var(--color-text-primary);
  margin: 0 0 var(--space-3);
  letter-spacing: 0.02em;
  font-family: var(--font-heading);
}

h1 {
  font-size: var(--fs-900);
  line-height: var(--lh-tight);
}

h2 {
  font-size: var(--fs-800);
  line-height: var(--lh-tight);
}

h3,
h4 {
  font-size: var(--fs-700);
}

/* Marca VertiSur aplicada solo en títulos H3 */
.marca-vertisur .marca-verti {
  color: var(--color-text-contrast);
}

.marca-vertisur .marca-sur {
  color: var(--color-accent-500);
}

p {
  margin: 0 0 var(--space-3);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover,
a:focus-visible {
  color: var(--color-accent-500);
  opacity: 0.9;
}

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

figure {
  margin: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: -999px;
  background: var(--color-accent-500);
  color: var(--color-text-contrast);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 700;
  z-index: var(--z-overlay);
}

.skip-link:focus-visible {
  left: var(--space-4);
  top: var(--space-4);
  outline: 2px solid var(--color-text-primary);
}

/* Contenedor general */
main > section,
header,
footer {
  width: min(96vw, var(--content-max-width));
  margin: 0 auto;
}

/* ==========================================================================
   Encabezado y navegación
   ========================================================================== */
header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-5) clamp(18px, 3vw, 36px);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(12px);
  background-color: var(--color-surface-900);
  background-image: var(--gradient-header);
  background-repeat: no-repeat;
  background-size: cover;
  border-bottom: var(--border-base);
  box-shadow: var(--shadow-soft);
  isolation: isolate;
}

.branding {
  display: flex;
  align-items: center;
  gap: var(--logo-gap, var(--space-3));
}

.site-logo {
  width: var(--logo-width);
  height: var(--logo-height);
  object-fit: contain;
}

.branding p {
  margin: 0;
  font-size: var(--fs-400);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-5);
  padding: 0;
  margin: 0;
}

nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-pill);
  border: var(--border-base);
  background: var(--color-overlay-faint);
  font-weight: 600;
  letter-spacing: 0.01em;
}

nav a:hover,
nav a:focus-visible {
  background: var(--color-overlay-highlight);
  border-color: var(--color-border-strong);
  color: var(--color-accent-500);
}

/* ==========================================================================
   Sección hero
   ========================================================================== */
main > section:first-of-type {
  padding: var(--section-padding) 0;
}

section > .hero-contenido,
section > .hero-imagen {
  border-radius: var(--radius-lg);
}

section:first-of-type {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap-lg);
  align-items: center;
}

.hero-contenido {
  padding: clamp(24px, 4vw, 36px);
  background: var(--gradient-hero-card);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
}

.hero-contenido .eyebrow {
  font-size: var(--fs-400);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-500);
  margin-bottom: var(--space-3);
  font-weight: 700;
}

.hero-contenido p {
  max-width: 620px;
}

.hero-beneficios {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-3) var(--space-5);
  margin: var(--space-5) 0;
}

.hero-beneficios h2 {
  font-size: var(--fs-650);
  margin-bottom: var(--space-2);
}

.cta-principal {
  margin-top: var(--space-5);
  display: grid;
  gap: var(--space-2);
  align-items: center;
  grid-template-columns: auto 1fr;
}

.cta-principal a {
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
  color: var(--color-text-contrast);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  box-shadow: var(--shadow-accent);
}

.cta-principal a:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent-strong);
  color: var(--color-text-contrast);
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
}

.cta-principal a:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent-strong);
  color: var(--color-text-contrast);
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
  outline: var(--outline-accent);
  outline-offset: 2px;
}

.cta-principal a:active {
  transform: translateY(0);
  box-shadow: var(--shadow-accent);
  color: var(--color-text-contrast);
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
}

.cta-principal p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--fs-400);
}

.hero-imagen {
  overflow: hidden;
  border: var(--border-base);
  position: relative;
  box-shadow: var(--shadow-strong);
}

.hero-imagen img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-imagen figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 12px 16px;
  background: linear-gradient(180deg, transparent, var(--color-overlay-strong));
  color: var(--color-text-secondary);
  font-size: var(--fs-400);
}

/* ==========================================================================
   Secciones generales
   ========================================================================== */
section:not(:first-of-type) {
  padding: var(--section-padding) 0;
  border-top: var(--border-base);
}

.encabezado-seccion {
  max-width: 760px;
  margin-bottom: var(--space-7);
}

.encabezado-seccion p {
  font-size: var(--fs-500);
}

/* --------------------------------------------------------------------------
   Servicios
   -------------------------------------------------------------------------- */
.lista-servicios {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap-lg);
}

.lista-servicios article {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface-accent);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.lista-servicios article:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
}

.lista-servicios p {
  color: var(--color-text-secondary);
}

.services-container {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap-lg);
}

.service-item {
  position: relative;
  display: flex;
}

.service-card {
  display: block;
  width: 100%;
  height: 280px;
  border-radius: var(--radius-lg);
  background: var(--color-surface-accent);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  text-align: center;
  font: inherit;
  color: inherit;
  appearance: none;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
}

.service-card:focus-visible {
  outline: 3px solid var(--color-accent-500);
  outline-offset: 2px;
}

.service-item.is-active .service-card {
  border-color: var(--color-border-accent);
  box-shadow: 0 16px 32px rgba(245, 196, 0, 0.15);
  height: auto;
  overflow: visible;
}

.service-front,
.service-detail {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: opacity var(--transition-medium), transform var(--transition-medium);
}

.service-front {
  gap: var(--space-3);
}

.service-detail {
  background: var(--color-surface-700);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
}

.service-card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  width: min(260px, 100%);
}

.service-card h3 {
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.service-card p {
  margin: 0;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.service-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  border: var(--border-base);
  color: var(--color-accent-500);
}

.service-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-map {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.service-item.is-active .service-front {
  opacity: 0;
  pointer-events: none;
}

.service-item.is-active .service-detail {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  position: relative;
  inset: auto;
  height: auto;
  padding: var(--space-6) var(--space-5);
}

.service-map-title {
  margin-bottom: var(--space-4);
  font-size: var(--fs-500);
  color: var(--color-text-contrast);
}

.service-item.is-active .service-map-title {
  font-size: clamp(var(--fs-400), 2vw, var(--fs-500));
  line-height: 1.3;
  text-wrap: balance;
  word-break: break-word;
}

.service-map-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  position: relative;
}

.service-item.is-active .service-map {
  height: auto;
  overflow: visible;
}

.service-node {
  position: relative;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.12);
  text-align: center;
  font-weight: 600;
  color: var(--color-text-contrast);
}

.service-node--main {
  background: var(--color-accent-500);
  color: var(--color-text-contrast);
}

.service-node--main::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -28px;
  width: 2px;
  height: 28px;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.45);
}

.service-item.is-active .service-node {
  border-color: var(--color-accent-400);
  background: rgba(255, 255, 255, 0.16);
}

.service-item.is-active .service-node--main::after,
.service-item.is-active .service-branches::before,
.service-item.is-active .service-branches .service-node::before {
  background: var(--color-accent-400);
}

.service-item.is-active .service-branches .service-node::after {
  border-bottom-color: var(--color-accent-400);
}

.service-branches {
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--space-4);
  padding-top: var(--space-5);
}

.service-branches::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 2px;
  background: rgba(255, 255, 255, 0.45);
}

.service-branches .service-node::before {
  content: "";
  position: absolute;
  top: -22px;
  left: 50%;
  width: 2px;
  height: 16px;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.45);
}

.service-branches .service-node::after {
  content: "";
  position: absolute;
  top: -28px;
  left: calc(50% - 5px);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 6px solid rgba(255, 255, 255, 0.45);
}

/* --------------------------------------------------------------------------
   Seguridad y certificaciones
   -------------------------------------------------------------------------- */
.lista-certificaciones {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--gap-lg);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.lista-certificaciones li {
  padding: var(--space-5) var(--space-5);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--color-surface-gradient-soft), var(--color-surface-gradient-strong));
  border: var(--border-base);
}

.lista-certificaciones h3 {
  margin-bottom: 8px;
}

.resumen-cumplimiento {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--gap-lg);
  margin: var(--space-6) 0;
}

.resumen-cumplimiento > div {
  padding: var(--space-4) var(--space-4);
  background: var(--color-surface-alt);
  border-radius: var(--radius-lg);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
}

.resumen-cumplimiento h3 {
  margin-bottom: 6px;
}

.etiqueta {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--color-badge);
  color: var(--color-accent-500);
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: var(--fs-300);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.tarjetas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap-lg);
}

.tarjeta-seguridad {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface-accent-strong);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
  display: grid;
  gap: var(--space-2);
}

.tarjeta-seguridad h3 {
  margin-bottom: 4px;
}

.matriz-operativa {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap-lg);
}

.matriz-operativa > div {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
}

.checklist-operativo {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0 0;
  display: grid;
  gap: var(--space-2);
}

.checklist-operativo li {
  position: relative;
  padding-left: var(--space-6);
  color: var(--color-text-secondary);
}

.checklist-operativo li::before {
  content: "•";
  position: absolute;
  left: var(--space-2);
  color: var(--color-accent-500);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   Seguridad - bloques informativos
   -------------------------------------------------------------------------- */
.seguridad-bloques {
  display: grid;
  gap: var(--gap-xl);
}

.seguridad-bloque {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
  gap: var(--gap-lg);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
}

.seguridad-bloque.inverso .seguridad-texto {
  order: 2;
}

.seguridad-bloque.inverso .seguridad-imagen {
  order: 1;
}

.seguridad-texto h3 {
  margin-bottom: var(--space-2);
}

.seguridad-imagen {
  margin: 0;
}

.seguridad-imagen img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-strong);
}

/* --------------------------------------------------------------------------
   Razones para elegirnos
   -------------------------------------------------------------------------- */
.razones {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap-lg);
}

.razones article {
  padding: var(--space-5);
  background: var(--color-overlay-faint);
  border-radius: var(--radius-lg);
  border: var(--border-base);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.razones article:hover {
  background: var(--color-overlay-accent-soft);
  border-color: var(--color-border-strong);
}

/* --------------------------------------------------------------------------
   Sección de contacto / CTA final
   -------------------------------------------------------------------------- */
.cta-final {
  padding: clamp(26px, 4vw, 42px);
  background: var(--gradient-cta);
  border: var(--border-base);
  border-radius: calc(var(--radius-lg) + 4px);
  box-shadow: var(--shadow-strong);
  position: relative;
  overflow: hidden;
}

.cta-final::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, var(--color-overlay-highlight), transparent 40%),
    radial-gradient(circle at 80% 10%, var(--color-overlay-brand-strong), transparent 45%);
  pointer-events: none;
}

.cta-final h2,
.cta-final p,
.cta-final .datos-contacto {
  position: relative;
}

.datos-contacto {
  margin-top: var(--space-4);
  display: grid;
  gap: var(--space-3);
  font-size: var(--fs-600);
  font-weight: 600;
}

.datos-contacto a {
  color: var(--color-accent-500);
}

.datos-contacto a:hover,
.datos-contacto a:focus-visible {
  color: var(--color-accent-400);
}

/* --------------------------------------------------------------------------
   Página de contacto
   -------------------------------------------------------------------------- */
.ficha-contacto {
  background: var(--gradient-secondary-card);
  display: grid;
  align-content: stretch;
}

.card-contacto {
  padding: var(--space-6);
  display: grid;
  gap: var(--space-3);
  background: var(--color-surface-deep);
  border-radius: var(--radius-lg);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
}

.card-contacto h3 {
  margin: 0;
}

.card-secundaria {
  background: var(--gradient-contact);
}

.lista-contacto {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-3);
}

.lista-contacto li {
  display: grid;
  gap: 4px;
}

.lista-contacto span {
  font-weight: 700;
  color: var(--color-text-primary);
}

.lista-contacto a {
  color: var(--color-accent-500);
  font-weight: 600;
}

.lista-contacto p {
  margin: 0;
}

.bloque-contacto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--gap-lg);
  align-items: start;
}

.formulario-contacto {
  padding: var(--space-5);
  background: var(--color-surface-alt);
  border-radius: calc(var(--radius-lg) + 2px);
  border: var(--border-base);
  box-shadow: var(--shadow-strong);
  display: grid;
  gap: var(--space-3);
}

.formulario-contacto .campo {
  display: grid;
  gap: var(--space-2);
}

.formulario-contacto label {
  font-weight: 600;
  color: var(--color-text-primary);
}

.formulario-contacto input,
.formulario-contacto select,
.formulario-contacto textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  border: var(--border-contrast);
  background: var(--color-overlay-soft);
  color: var(--color-text-primary);
  font-size: var(--fs-500);
}

.formulario-contacto input:focus-visible,
.formulario-contacto select:focus-visible,
.formulario-contacto textarea:focus-visible {
  outline: var(--outline-accent);
  border-color: var(--color-border-accent);
}

.formulario-contacto textarea {
  resize: vertical;
}

.formulario-contacto .microcopy {
  font-size: var(--fs-400);
  color: var(--color-text-secondary);
}

.formulario-contacto .confianza {
  border-left: 3px solid var(--color-accent-500);
  padding-left: var(--space-3);
}

.boton {
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.boton.primario {
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
  color: var(--color-text-contrast);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-accent);
  text-transform: uppercase;
}

.boton.primario:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent-strong);
  color: var(--color-text-contrast);
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
}

.boton.primario:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent-strong);
  color: var(--color-text-contrast);
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
  outline: var(--outline-accent);
  outline-offset: 2px;
}

.boton.primario:active {
  transform: translateY(0);
  box-shadow: var(--shadow-accent);
  color: var(--color-text-contrast);
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
}

/* ==========================================================================
   Botón flotante de WhatsApp
   ========================================================================== */
.boton-whatsapp-flotante {
  position: fixed;
  left: clamp(16px, 3vw, 28px);
  bottom: clamp(16px, 3vw, 28px);
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  background: #25d366;
  color: #0b1d16;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 12px 24px rgba(8, 15, 20, 0.25);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.boton-whatsapp-flotante:hover,
.boton-whatsapp-flotante:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(8, 15, 20, 0.3);
  color: #0b1d16;
  outline: none;
}

.boton-whatsapp-icono {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #0b1d16;
  color: #25d366;
}

.boton-whatsapp-icono svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

@media (max-width: 480px) {
  .boton-whatsapp-flotante {
    padding: 12px;
  }

  .boton-whatsapp-texto {
    display: none;
  }
}

/* ========================================================================== 
   Pie de página
   ========================================================================== */
footer {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-5);
  padding: 32px 0 48px;
  border-top: var(--border-base);
}

footer h3,
footer h4 {
  margin-bottom: var(--space-3);
}

footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

footer .footer-social {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  align-self: stretch;
  padding-inline: var(--space-2);
}

footer .footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(44px, 4vw, 52px);
  height: clamp(44px, 4vw, 52px);
  color: var(--color-text-secondary);
  border-radius: 50%;
  transition: color 0.2s ease, opacity 0.2s ease;
}

footer .footer-social a:hover,
footer .footer-social a:focus-visible {
  color: var(--color-accent-400);
  opacity: 0.9;
}

footer .footer-social svg {
  width: clamp(26px, 3vw, 32px);
  height: clamp(26px, 3vw, 32px);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

footer .footer-social svg polygon,
footer .footer-social svg path {
  fill: none;
}

footer .footer-social svg polygon {
  fill: currentColor;
  stroke: none;
}

footer p:last-of-type {
  grid-column: 1 / -1;
  margin-top: var(--space-2);
  color: var(--color-text-secondary);
  font-size: var(--fs-400);
}

/* ==========================================================================
   Variantes por theme (layout, menús, tarjetas, botones e iconografía)
   ========================================================================== */
:root[data-theme="corporativo-profesional"] header {
  border-bottom: 2px solid var(--color-border-strong);
}

:root[data-theme="corporativo-profesional"] nav a {
  border-radius: var(--radius-sm);
  background: var(--color-overlay-soft);
  border: 1px solid var(--color-border);
  text-transform: uppercase;
  font-size: var(--fs-400);
}

:root[data-theme="corporativo-profesional"] .hero-contenido {
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-soft);
}

:root[data-theme="corporativo-profesional"] .lista-servicios article,
:root[data-theme="corporativo-profesional"] .tarjeta-seguridad,
:root[data-theme="corporativo-profesional"] .matriz-operativa > div {
  border-left: 4px solid var(--color-accent-500);
}

:root[data-theme="corporativo-profesional"] .cta-principal a,
:root[data-theme="corporativo-profesional"] .boton.primario {
  border-radius: var(--radius-sm);
}

:root[data-theme="corporativo-profesional"] .service-icon {
  border-radius: 8px;
  background: var(--color-surface-700);
}

:root[data-theme="corporativo-profesional"] .service-icon svg {
  stroke-width: 1.6;
  stroke-linecap: butt;
  stroke-linejoin: miter;
}

:root[data-theme="tecnico-industrial"] header {
  background: linear-gradient(120deg, var(--color-surface-900), var(--color-surface-700));
  border-bottom: 3px solid var(--color-accent-500);
}

:root[data-theme="tecnico-industrial"] nav ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-3);
}

:root[data-theme="tecnico-industrial"] nav a {
  border-radius: 0;
  background: var(--color-surface-700);
  border: 1px solid var(--color-border-strong);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--fs-400);
}

:root[data-theme="tecnico-industrial"] .hero-contenido,
:root[data-theme="tecnico-industrial"] .hero-imagen,
:root[data-theme="tecnico-industrial"] .lista-servicios article,
:root[data-theme="tecnico-industrial"] .service-card {
  border-radius: var(--radius-sm);
}

:root[data-theme="tecnico-industrial"] .service-card {
  background: var(--color-surface-800);
  box-shadow: none;
}

:root[data-theme="tecnico-industrial"] .service-detail {
  background: var(--color-surface-600);
}

:root[data-theme="tecnico-industrial"] .service-icon {
  border-radius: 4px;
  background: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.06) 0 6px,
    rgba(0, 0, 0, 0.15) 6px 12px
  );
  border: 1px solid var(--color-border-strong);
}

:root[data-theme="tecnico-industrial"] .service-icon svg {
  stroke-width: 2.6;
  stroke-linecap: square;
  stroke-linejoin: bevel;
}

:root[data-theme="visual-comercial"] header {
  grid-template-columns: 1fr;
  text-align: center;
}

:root[data-theme="visual-comercial"] .branding {
  flex-direction: column;
  align-items: center;
}

:root[data-theme="visual-comercial"] nav ul {
  justify-content: center;
}

:root[data-theme="visual-comercial"] nav a {
  border-radius: var(--radius-pill);
  background: linear-gradient(120deg, var(--color-accent-500), var(--color-accent-400));
  color: var(--color-text-contrast);
  border: none;
  font-weight: 700;
}

:root[data-theme="visual-comercial"] section:first-of-type {
  grid-template-columns: minmax(300px, 1fr) minmax(320px, 1.1fr);
  align-items: stretch;
}

:root[data-theme="visual-comercial"] .hero-contenido {
  background: var(--gradient-hero-card);
  border: none;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.28);
}

:root[data-theme="visual-comercial"] .hero-imagen {
  border-radius: calc(var(--radius-lg) + 12px);
  transform: translateY(-12px);
  box-shadow: 0 26px 48px rgba(0, 0, 0, 0.35);
}

:root[data-theme="visual-comercial"] .lista-servicios article {
  background: linear-gradient(160deg, rgba(251, 113, 133, 0.2), rgba(18, 7, 22, 0.9));
  border-color: rgba(251, 113, 133, 0.35);
}

:root[data-theme="visual-comercial"] .service-icon {
  border-radius: var(--radius-pill);
  background: rgba(251, 113, 133, 0.2);
}

:root[data-theme="visual-comercial"] .service-icon svg {
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 6 4;
}

:root[data-theme="minimalista-premium"] header {
  backdrop-filter: blur(10px);
  background-color: var(--color-surface-900);
  background-image: var(--gradient-header);
  border-bottom: 1px solid var(--color-border);
  box-shadow: none;
}

:root[data-theme="minimalista-premium"] nav a {
  border: none;
  background: transparent;
  padding: var(--space-2) var(--space-2);
  font-weight: 500;
  text-transform: none;
}

:root[data-theme="minimalista-premium"] .hero-contenido,
:root[data-theme="minimalista-premium"] .lista-servicios article,
:root[data-theme="minimalista-premium"] .tarjeta-seguridad,
:root[data-theme="minimalista-premium"] .matriz-operativa > div,
:root[data-theme="minimalista-premium"] .formulario-contacto,
:root[data-theme="minimalista-premium"] .card-contacto,
:root[data-theme="minimalista-premium"] .cta-final {
  box-shadow: none;
}

:root[data-theme="minimalista-premium"] .hero-contenido {
  background: var(--color-surface-900);
}

:root[data-theme="minimalista-premium"] .cta-principal a,
:root[data-theme="minimalista-premium"] .boton.primario {
  background: var(--color-accent-500);
  text-transform: none;
  letter-spacing: 0.01em;
}

:root[data-theme="minimalista-premium"] .service-icon {
  background: transparent;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

:root[data-theme="minimalista-premium"] .service-icon svg {
  stroke-width: 1.2;
}

:root[data-theme="informativo-confianza"] header {
  border-top: 4px solid var(--color-accent-500);
  border-bottom: 1px solid var(--color-border);
}

:root[data-theme="informativo-confianza"] section:not(:first-of-type) {
  background: var(--color-surface-deep);
  padding: calc(var(--section-padding) - 8px);
  border-radius: var(--radius-lg);
}

:root[data-theme="informativo-confianza"] .encabezado-seccion {
  border-left: 4px solid var(--color-accent-500);
  padding-left: var(--space-4);
}

:root[data-theme="informativo-confianza"] .lista-servicios article,
:root[data-theme="informativo-confianza"] .razones article,
:root[data-theme="informativo-confianza"] .tarjeta-seguridad {
  background: var(--color-surface-alt);
  border-left: 4px solid var(--color-accent-500);
}

:root[data-theme="informativo-confianza"] .cta-principal a {
  border-radius: var(--radius-pill);
}

:root[data-theme="informativo-confianza"] .service-icon {
  border-radius: 50%;
  background: var(--color-badge);
}

:root[data-theme="informativo-confianza"] .service-icon svg {
  stroke-width: 2;
}

/* ==========================================================================
   Responsividad
   ========================================================================== */
@media (max-width: 960px) {
  header {
    grid-template-columns: 1fr;
    position: sticky;
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .cta-principal {
    grid-template-columns: 1fr;
  }

  .services-container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  main > section,
  header,
  footer {
    width: 90vw;
  }

  header {
    text-align: center;
  }

  .branding {
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  nav ul {
    gap: 10px;
    justify-content: center;
  }

  nav a {
    width: 100%;
    justify-content: center;
  }

  .hero-contenido,
  .encabezado-seccion,
  .cta-final,
  .lista-servicios article,
  .lista-certificaciones li,
  .razones article,
  .tarjeta-seguridad,
  .service-card-content {
    text-align: center;
  }

  .hero-beneficios,
  .cta-principal,
  .lista-servicios,
  .lista-certificaciones,
  .razones,
  .services-container {
    justify-items: center;
  }

  .cta-principal {
    text-align: center;
  }

  .cta-principal a {
    width: 100%;
    justify-content: center;
  }

  .hero-imagen {
    justify-self: center;
  }

  .hero-contenido,
  .cta-final {
    padding: 20px;
  }

  .services-container {
    grid-template-columns: 1fr;
    justify-items: stretch;
  }

  .service-item {
    width: 100%;
  }

  .service-card-content {
    width: 100%;
    max-width: 100%;
  }

  footer .footer-social {
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    padding-inline: 0;
  }

  footer .footer-social a {
    width: clamp(42px, 12vw, 48px);
    height: clamp(42px, 12vw, 48px);
  }

  footer .footer-social svg {
    width: clamp(24px, 7vw, 30px);
    height: clamp(24px, 7vw, 30px);
  }
}