/* ============================================================
   MMI – Maquinados Industriales | styles.css
   CRO-OPTIMIZADO · Industrial B2B · WhatsApp-First
   
   CAMBIOS PRINCIPALES vs versión anterior:
   ─────────────────────────────────────────
   [CRO-1]  Paleta: azul más oscuro/sólido → menos "startup", más proveedor serio
   [CRO-2]  Transiciones reducidas; hover lifts eliminados en tarjetas informativas
   [CRO-3]  btn-primary: +20% padding, sin box-shadow animado. CTA que "pesa"
   [CRO-4]  stat-num: 2.4rem → 3.2rem. Las métricas deben dominar la vista
   [CRO-5]  WhatsApp float: pill con texto, sombra pulsante, siempre visible
   [CRO-6]  Trust bar: fondo oscuro = autoridad en mismo nivel que el hero
   [CRO-7]  Formulario: borde superior accent 4px; submit más alto
   [CRO-8]  Secciones: padding 6rem → 5rem. Menos aire muerto, más contenido
   [CRO-9]  nav-cta en accent amarillo + punto verde parpadeante = urgencia suave
   [CRO-10] Animaciones fade-in desactivadas en mobile vía media query
   ============================================================ */

:root {
  /* [CRO-1] Azul industrial más profundo, menos startup */
  --navy:         #0A1628;
  --navy-mid:     #162338;
  --navy-light:   #1E3450;
  --blue:         #1A4580;
  --blue-bright:  #1D54B0;
  --blue-hover:   #153F8A;
  --accent:       #E8930A;
  --accent-light: #F5B942;
  --steel:        #5A6B7E;
  --steel-light:  #8A9BB0;
  --white:        #FFFFFF;
  --off-white:    #F5F7FA;
  --gray-100:     #EEF1F5;
  --gray-200:     #D8DFE8;
  --gray-400:     #8A9BB0;
  --gray-700:     #2E3D50;
  --text:         #18253A;
  --text-muted:   #435266;

  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;

  /* [CRO-2] Radio reducido: más corporativo industrial */
  --radius:    4px;
  --radius-lg: 8px;

  /* [CRO-2] Sombras más sutiles */
  --shadow:    0 1px 8px rgba(10,22,40,0.09);
  --shadow-lg: 0 4px 20px rgba(10,22,40,0.14);

  /* [CRO-2] Transiciones más rápidas */
  --transition: 0.15s ease;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── CONTAINER ── */
.container {
  width: min(1200px, 92vw);
  margin-inline: auto;
}

/* ── TYPOGRAPHY ── */
.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-bright);
  margin-bottom: 0.75rem;
  /* Línea izquierda: jerarquía sin color llamativo */
  padding-left: 0.7rem;
  border-left: 3px solid var(--blue-bright);
}
.section-tag--light {
  color: var(--accent-light);
  border-left-color: var(--accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--navy);
  margin-bottom: 0.9rem;
  letter-spacing: -0.01em;
}
.section-title--light { color: var(--white); }

.section-desc {
  max-width: 600px;
  color: var(--text-muted);
  font-size: 1rem;
  /* [CRO-8] Reducido de 3rem */
  margin-bottom: 2.5rem;
  line-height: 1.65;
}

/* ══════════════════════════════════════════════
   BOTONES – Jerarquía de conversión clara
   [CRO-3] Primary más grande y más sólido
   ══════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  /* [CRO-3] Target táctil más generoso */
  padding: 1rem 2.2rem;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background var(--transition), border-color var(--transition);
  white-space: nowrap;
}
/* [CRO-3] Sin box-shadow animado. Color sólido = confianza */
.btn-primary {
  background: var(--blue-bright);
  color: var(--white);
  border: 2px solid var(--blue-bright);
}
.btn-primary:hover {
  background: var(--blue-hover);
  border-color: var(--blue-hover);
  /* [CRO-2] Sin translateY en CTAs industriales */
}
.btn-outline {
  border: 2px solid rgba(255,255,255,0.55);
  color: var(--white);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.1);
}
.btn-full { width: 100%; }

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  /* Fondo sólido siempre: más autoridad que el translúcido anterior */
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: box-shadow var(--transition);
}
.navbar.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.35);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.logo-mmi {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--white);
  line-height: 1;
}
.logo-sub {
  font-size: 0.58rem;
  font-weight: 500;
  color: var(--gray-400);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-400);
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--white); }

/* [CRO-9] nav-cta: accent amarillo + punto verde parpadeante = urgencia baja */
.nav-cta {
  background: var(--accent) !important;
  color: var(--navy) !important;
  padding: 0.55rem 1.4rem !important;
  border-radius: var(--radius) !important;
  font-weight: 800 !important;
}
.nav-cta:hover {
  background: var(--accent-light) !important;
  color: var(--navy) !important;
}
/* Punto verde de disponibilidad */
.nav-cta::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #22C55E;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: middle;
  position: relative;
  top: -1px;
  animation: pulse-dot 2.5s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 1px;
  transition: all var(--transition);
}

/* ── HERO ── */
.hero {
  position: relative;
  /* [CRO-8] 100svh → 94svh: B2B prefiere ver contenido rápido */
  min-height: 94svh;
  background: var(--navy);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 64px;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(29,84,176,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29,84,176,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}
/* Franja diagonal decorativa */
.hero-bg-grid::before {
  content: '';
  position: absolute;
  top: -10%; right: -5%;
  width: 45%; height: 120%;
  background: linear-gradient(135deg, transparent 40%, rgba(29,84,176,0.06) 100%);
  pointer-events: none;
}
.hero-bg-grid::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 35%;
  background: linear-gradient(to top, var(--navy), transparent);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding-block: 5rem 4.5rem;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(29,84,176,0.25);
  border: 1px solid rgba(29,84,176,0.5);
  color: var(--accent-light);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 2px;
  margin-bottom: 1.6rem;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  font-weight: 800;
  line-height: 1.04;
  color: var(--white);
  margin-bottom: 1.4rem;
  letter-spacing: -0.015em;
}
.hero-accent { color: var(--accent); }
.hero-sub {
  font-size: 1.08rem;
  color: var(--steel-light);
  max-width: 560px;
  /* [CRO-8] Reducido de 2.5rem: acercar CTA al titular */
  margin-bottom: 2rem;
  line-height: 1.65;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

/* [CRO-4] Stats: franja destacada con borde accent */
.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 2.2rem;
  flex-wrap: wrap;
  padding: 1.5rem 2rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  /* [CRO-4] 2.4rem → 3.2rem */
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.7rem;
  color: var(--steel-light);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 2px;
}
.stat-divider {
  width: 1px;
  height: 44px;
  background: rgba(255,255,255,0.12);
}
.hero-scroll-indicator {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.hero-scroll-indicator span {
  display: block;
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.35), transparent);
  margin: 0 auto;
}

/* ══════════════════════════════════════════════
   TRUST BAR
   [CRO-6] Fondo oscuro: clientes al mismo nivel
   de autoridad que el hero
   ══════════════════════════════════════════════ */
.trust-bar {
  background: var(--navy-mid);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  /* [CRO-8] Reducido: es franja, no sección */
  padding: 1.6rem 0;
}
.trust-label {
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel-light);
  margin-bottom: 1rem;
}
.trust-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 2rem;
}
.trust-logo-item {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.06em;
  transition: color var(--transition);
  padding: 0.25rem 0;
}
.trust-logo-item:hover { color: var(--white); }

/* ── ABOUT ── */
.about {
  /* [CRO-8] 6rem → 5rem */
  padding: 5rem 0;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 0.9rem;
  font-size: 1rem;
}
.about-highlights {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.94rem;
  color: var(--gray-700);
}
/* [CRO] Cuadrado en lugar de círculo: más industrial */
.highlight-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--blue-bright);
  color: var(--white);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 800;
  margin-top: 2px;
}
.about-card-stack {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
/* [CRO-2] Sin hover lift en tarjetas informativas no clicables */
.about-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  box-shadow: var(--shadow);
}
.about-card--main  { border-left: 4px solid var(--blue-bright); }
.about-card--sec   { border-left: 4px solid var(--accent); }
.about-card--third { border-left: 4px solid var(--steel); }
.about-card-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.about-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.2rem;
}
.about-card p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── SERVICES ── */
.services {
  padding: 5rem 0;
  background: var(--navy);
}
.services .section-tag { color: var(--accent-light); border-left-color: var(--accent); }
.services .section-title { color: var(--white); }
.services .section-desc { color: var(--steel-light); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 1.2rem;
}
/* [CRO-2] Sin transform hover. Borde izquierdo en hover = suficiente feedback */
.service-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.09);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: border-left-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card:hover {
  background: rgba(255,255,255,0.06);
  border-left-color: var(--blue-bright);
}
.service-card--featured {
  background: rgba(29,84,176,0.18);
  border-color: rgba(29,84,176,0.45);
  border-left-color: var(--accent);
}
.service-card--featured:hover { border-left-color: var(--accent-light); }
.service-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  color: rgba(255,255,255,0.07);
  line-height: 1;
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.7rem;
}
.service-card p {
  font-size: 0.9rem;
  color: var(--steel-light);
  line-height: 1.58;
  margin-bottom: 1.1rem;
}
.service-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.service-list li {
  font-size: 0.84rem;
  color: var(--gray-400);
  padding-left: 1rem;
  position: relative;
}
.service-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
}
.service-badge {
  position: absolute;
  top: 1.1rem; right: 1.1rem;
  background: var(--accent);
  color: var(--navy);
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 0.22rem 0.55rem;
  border-radius: 2px;
}

/* ── PROCESS ── */
.process {
  padding: 5rem 0;
  background: var(--off-white);
}
.process-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.process-step {
  flex: 1;
  min-width: 175px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.3rem 0.9rem;
}
/* [CRO] Step numbers cuadrados: lenguaje industrial */
.step-num {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: var(--blue-bright);
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  flex-shrink: 0;
}
.step-content h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.step-content p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 195px;
}
.process-connector {
  flex-shrink: 0;
  width: 36px;
  height: 1px;
  background: var(--gray-200);
  margin-top: 24px;
  position: relative;
}
.process-connector::after {
  content: '›';
  position: absolute;
  right: -5px; top: -9px;
  color: var(--blue-bright);
  font-size: 1.1rem;
}

/* ── ADVANTAGES ── */
.advantages {
  padding: 5rem 0;
  /* [CRO] Fondo plano: más sobriedad que gradiente diagonal */
  background: var(--navy-mid);
  border-top: 3px solid var(--accent);
}
.adv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4.5rem;
  align-items: center;
}
.adv-desc {
  color: var(--steel-light);
  margin-bottom: 2.2rem;
  font-size: 1rem;
  line-height: 1.7;
}
.adv-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.adv-item {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  padding: 1.4rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.adv-item:first-child { padding-top: 0; }
.adv-item:last-child  { border-bottom: none; padding-bottom: 0; }
.adv-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 1px;
  width: 38px;
  text-align: center;
}
.adv-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.adv-item p {
  font-size: 0.88rem;
  color: var(--steel-light);
  line-height: 1.55;
}

/* ── APPLICATIONS ── */
.applications { padding: 5rem 0; }
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 1rem;
}
/* [CRO-2] Hover: borde izquierdo, sin lift */
.app-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: border-left-color var(--transition);
}
.app-card:hover { border-left-color: var(--blue-bright); }
.app-icon {
  font-size: 1.6rem;
  margin-bottom: 0.9rem;
}
.app-card h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.app-card p {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ══════════════════════════════════════════════
   CONTACTO
   [CRO-7] Formulario prominente, botón submit
   que domina; WhatsApp a ancho completo
   ══════════════════════════════════════════════ */
.contact {
  padding: 5rem 0;
  background: var(--navy);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4.5rem;
  align-items: start;
}
.contact-desc {
  color: var(--steel-light);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}
.contact-data {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.8rem;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}
.contact-icon { font-size: 1rem; margin-top: 3px; flex-shrink: 0; }
.contact-item a,
.contact-item span {
  color: var(--steel-light);
  font-size: 0.93rem;
  transition: color var(--transition);
}
.contact-item a:hover { color: var(--white); }
.contact-phones {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

/* [CRO] WhatsApp en contacto: ancho completo, dominante */
.btn-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  width: 100%;
  background: #25D366;
  color: var(--white);
  padding: 1rem 1.8rem;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background var(--transition);
}
.btn-whatsapp:hover { background: #1fba5a; }

/* ── FORMULARIO ── */
.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.2rem;
  /* [CRO-7] Borde superior accent = señal visual de "acción aquí" */
  border-top: 4px solid var(--accent);
  box-shadow: 0 8px 32px rgba(0,0,0,0.22);
}
.form-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 1.5rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--gray-100);
}
.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gray-700);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.38rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  /* [CRO] Altura generosa: target táctil cómodo */
  padding: 0.82rem 1rem;
  background: var(--gray-100);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue-bright);
  background: var(--white);
  /* [CRO-2] Sin glow de focus: menos startup */
}
.form-group input.error,
.form-group textarea.error { border-color: #DC2626; }

.form-note {
  text-align: center;
  font-size: 0.78rem;
  color: var(--steel);
  margin-top: 0.7rem;
}
/* [CRO-7] Submit: dominante en mobile */
#submitBtn {
  font-size: 1.1rem;
  padding: 1.1rem 2rem;
  letter-spacing: 0.06em;
}
.form-msg {
  margin-top: 1rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  display: none;
}
.form-msg.success {
  display: block;
  background: #D1FAE5;
  color: #065F46;
  border-left: 4px solid #10B981;
}
.form-msg.error-msg {
  display: block;
  background: #FEE2E2;
  color: #991B1B;
  border-left: 4px solid #EF4444;
}

/* ── FOOTER ── */
.footer {
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 3rem 0 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
  justify-content: space-between;
  padding-bottom: 2.5rem;
}
.footer-brand p {
  font-size: 0.8rem;
  color: var(--steel);
  margin-top: 0.5rem;
  max-width: 210px;
  line-height: 1.5;
}
.footer-links,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.footer-links a,
.footer-contact a {
  font-size: 0.86rem;
  color: var(--steel);
  transition: color var(--transition);
}
.footer-links a:hover,
.footer-contact a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 1rem 0;
}
.footer-bottom p {
  text-align: center;
  font-size: 0.76rem;
  color: var(--steel);
}

/* ══════════════════════════════════════════════
   WHATSAPP FLOTANTE
   [CRO-5] Pill con texto, sombra pulsante
   Canal primario de contacto = máxima visibilidad
   ══════════════════════════════════════════════ */
.whatsapp-float {
  position: fixed;
  bottom: 1.8rem;
  right: 1.8rem;
  z-index: 900;
  background: #25D366;
  color: var(--white);
  /* [CRO-5] Pill = cabe etiqueta de texto */
  height: 52px;
  border-radius: 26px;
  display: flex;
  align-items: center;
  padding: 0 1.2rem 0 1rem;
  gap: 0.6rem;
  /* [CRO-5] Pulso de sombra sin mover el botón */
  animation: wa-pulse 4s ease-in-out infinite;
  transition: background var(--transition);
}
@keyframes wa-pulse {
  0%, 100% { box-shadow: 0 4px 18px rgba(37,211,102,0.48); }
  50%       { box-shadow: 0 4px 28px rgba(37,211,102,0.72); }
}
.whatsapp-float:hover {
  background: #1fba5a;
  animation: none;
  box-shadow: 0 4px 24px rgba(37,211,102,0.6);
}
.whatsapp-float svg { flex-shrink: 0; }
/* [CRO-5] Etiqueta de texto = CTA real, no solo ícono */
.whatsapp-float-label {
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* ── ANIMACIONES ── */
.fade-in {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .about-grid,
  .adv-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-visual { order: -1; }
  .adv-text     { order: -1; }
  .process-steps { flex-direction: column; align-items: center; }
  .process-connector { width: 2px; height: 24px; margin-top: 0; }
  .process-connector::after { content: '↓'; right: -7px; top: -8px; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--navy);
    flex-direction: column;
    padding: 1.2rem 1.5rem 1.8rem;
    gap: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.07);
  }
  .nav-links.open { display: flex; }
  .nav-hamburger  { display: flex; }

  /* [CRO] nav-cta ancho completo en mobile */
  .nav-links .nav-cta {
    text-align: center;
    padding: 0.7rem 1rem !important;
  }

  /* [CRO] CTAs a ancho completo: máximo tap area */
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
    font-size: 1.1rem;
    padding: 1.1rem 1.5rem;
  }

  .hero-stats {
    gap: 1.2rem;
    padding: 1.2rem 1.4rem;
    display: flex;
  }
  .stat-divider { display: none; }
  .stat-num { font-size: 2.6rem; }

  .services-grid,
  .apps-grid { grid-template-columns: 1fr; }

  .contact-form-wrap { padding: 1.6rem; }

  /* [CRO-5] En mobile: ocultar label del flotante para no tapar contenido */
  .whatsapp-float {
    bottom: 1.2rem;
    right: 1.2rem;
    height: 50px;
    padding: 0 0.9rem;
  }
  .whatsapp-float-label { display: none; }

  .footer-inner { flex-direction: column; gap: 1.5rem; }

  /* [CRO-10] Fade-in OFF en mobile: rendimiento > efecto visual */
  .fade-in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 2.3rem; }
  .hero-stats { flex-direction: column; align-items: flex-start; gap: 0.8rem; }
  .trust-logos { gap: 0.4rem 1.2rem; }
  .section-title { font-size: 1.7rem; }
  #submitBtn { padding: 1.2rem 1.5rem; font-size: 1.15rem; }
}

/* ── ACCESIBILIDAD ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .fade-in { opacity: 1 !important; transform: none !important; }
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ══════════════════════════════════════════════
   HERO – Franja de contacto directo
   Número principal + tiempo de respuesta
   ══════════════════════════════════════════════ */
.btn-whatsapp-hero {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.8rem;
  border-radius: var(--radius);
  background: #25D366;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background var(--transition);
  border: 2px solid #25D366;
}
.btn-whatsapp-hero:hover { background: #1fba5a; border-color: #1fba5a; }

.hero-contact-strip {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.2rem;
}

.hero-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: color var(--transition);
  text-decoration: none;
}
.hero-phone:hover { color: var(--accent); }
.hero-phone svg { opacity: 0.7; flex-shrink: 0; }

.hero-divider-dot {
  color: rgba(255,255,255,0.25);
  font-size: 1.2rem;
  line-height: 1;
}

.hero-response-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--accent-light);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border-radius: 2px;
}
.hero-response-badge svg { opacity: 0.85; flex-shrink: 0; }

@media (max-width: 768px) {
  .hero-contact-strip { gap: 0.6rem; }
  .hero-phone { font-size: 1.15rem; }
  .btn-whatsapp-hero {
    width: 100%;
    justify-content: center;
  }
  .hero-divider-dot { display: none; }
  .hero-response-badge { font-size: 0.72rem; }
}

/* ══════════════════════════════════════════════
   IMÁGENES DE FONDO – Secciones con contexto visual
   Todas usan overlay para mantener legibilidad.
   URLs de Unsplash con parámetros w= y q= para
   peso controlado (~80-120kb por imagen).
   ══════════════════════════════════════════════ */

/* ── HERO con imagen: overlay más profundo para leer el titular ── */
.hero {
  background-color: var(--navy);
  background-blend-mode: multiply;
  /* El overlay de oscuridad se refuerza con el pseudo-elemento */
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(10,22,40,0.88) 0%,
    rgba(10,22,40,0.72) 55%,
    rgba(10,22,40,0.55) 100%
  );
  z-index: 1;
  pointer-events: none;
}
/* El contenido ya tiene z-index:2, el grid también debe superar el overlay */
.hero-bg-grid { z-index: 1; }
.hero-content { z-index: 2; }
.hero-scroll-indicator { z-index: 2; }

/* ── ABOUT con imagen de fondo muy tenue ── */
.about--bg {
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1581091226033-d5c48150dbaa?w=1200&q=60&auto=format&fit=crop');
  background-size: cover;
  background-position: center;
  background-attachment: fixed; /* parallax suave en desktop */
}
.about--bg::before {
  content: '';
  position: absolute;
  inset: 0;
  /* Overlay muy claro: la imagen es textura, no protagonista */
  background: rgba(248,250,252,0.93);
  pointer-events: none;
}
.about--bg .container { position: relative; z-index: 1; }

/* ── SERVICES con imagen: overlay navy oscuro sobre herramientas CNC ── */
.services {
  background-color: var(--navy);
  background-blend-mode: multiply;
}
.services::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10,22,40,0.82) 0%,
    rgba(10,22,40,0.70) 100%
  );
  pointer-events: none;
}
/* Services necesita position relative para el pseudo-elemento */
.services { position: relative; }
.services .container { position: relative; z-index: 1; }

/* ── ADVANTAGES con imagen de soldadura: overlay intenso para texto blanco ── */
.advantages--bg {
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1567789884554-0b844b597180?w=1200&q=65&auto=format&fit=crop');
  background-size: cover;
  background-position: center 30%;
  background-attachment: fixed;
}
.advantages--bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10,22,40,0.91) 0%,
    rgba(22,35,56,0.88) 100%
  );
  pointer-events: none;
}
.advantages--bg .container { position: relative; z-index: 1; }

/* ── APPLICATIONS con imagen de piezas metálicas tenue sobre blanco ── */
.applications--bg {
  position: relative;
  background-image: url('https://images.unsplash.com/photo-1518770660439-4636190af475?w=1200&q=60&auto=format&fit=crop');
  background-size: cover;
  background-position: center;
}
.applications--bg::before {
  content: '';
  position: absolute;
  inset: 0;
  /* Overlay muy claro: la imagen queda como textura de fondo */
  background: rgba(245,247,250,0.94);
  pointer-events: none;
}
.applications--bg .container { position: relative; z-index: 1; }

/* ── Mobile: desactivar parallax (background-attachment: fixed no funciona bien en iOS) ── */
@media (max-width: 768px) {
  .about--bg,
  .advantages--bg {
    background-attachment: scroll;
  }
}