/* ============================================
   Grúas Hardy — Estilos base
   ============================================ */

:root {
  --azul: #1e3a8a;
  --azul-dark: #172554;
  --azul-light: #3b82f6;
  --naranja: #f59e0b;
  --naranja-dark: #d97706;
  --texto: #1f2937;
  --texto-suave: #6b7280;
  --gris-bg: #f8fafc;
  --gris-borde: #e5e7eb;
  --blanco: #ffffff;
  --sombra-sm: 0 1px 2px rgba(0,0,0,.05);
  --sombra: 0 4px 12px rgba(0,0,0,.08);
  --sombra-lg: 0 12px 32px rgba(0,0,0,.12);
  --radio: 12px;
  --radio-sm: 8px;
  --container: 1200px;
  --fuente: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--fuente);
  color: var(--texto);
  line-height: 1.6;
  background: var(--blanco);
  -webkit-font-smoothing: antialiased;
}

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

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

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Tipografía */
h1, h2, h3, h4 { color: var(--azul-dark); line-height: 1.2; font-weight: 800; }
h1 { font-size: clamp(2.6rem, 8vw, 4.5rem); line-height: 1.05; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.75rem, 2.5vw + 1rem, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.05em; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--naranja);
  margin-bottom: 12px;
}

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

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radio-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--sombra); }
.btn-lg { padding: 16px 28px; font-size: 1rem; }

.btn-accent { background: var(--naranja); color: var(--blanco); }
.btn-accent:hover { background: var(--naranja-dark); }

.btn-outline { background: transparent; color: var(--azul); border-color: var(--azul); }
.btn-outline:hover { background: var(--azul); color: var(--blanco); }

.btn-light { background: var(--blanco); color: var(--azul); }

/* Variante para fondos oscuros (hero, CTA) */
.hero .btn-outline,
.cta-final .btn-outline {
  color: #ffffff;
  border-color: #ffffff;
  background: transparent;
}
.hero .btn-outline:hover,
.cta-final .btn-outline:hover {
  background: #ffffff;
  color: var(--azul);
  border-color: #ffffff;
}

/* Header */
.site-header {
  background: var(--blanco);
  border-bottom: 1px solid var(--gris-borde);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.logo img { height: 44px; width: auto; }
.nav { display: flex; gap: 28px; }
.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--texto);
  padding: 6px 0;
  position: relative;
  transition: color .15s ease;
}
.nav-link:hover, .nav-link.active { color: var(--azul); }
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 3px;
  background: var(--naranja);
  border-radius: 2px;
}
.btn-call svg { stroke: currentColor; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--azul-dark);
  transition: transform .2s, opacity .2s;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--azul) 0%, var(--azul-dark) 100%);
  color: var(--blanco);
  padding: 80px 0;
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(245,158,11,.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(59,130,246,.2) 0%, transparent 50%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  position: relative;
}
.hero h1 { color: var(--blanco); margin-bottom: 20px; }
.hero .lead { font-size: 1.15rem; opacity: 0.9; margin-bottom: 32px; max-width: 520px; }
.hero .eyebrow { color: var(--naranja); }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-image img {
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,.4));
}

/* Info bar */
.info-bar {
  background: var(--azul-dark);
  color: var(--blanco);
  padding: 24px 0;
  margin-top: -1px;
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.info-item {
  display: flex;
  align-items: center;
  gap: 16px;
}
.info-item svg { width: 32px; height: 32px; color: var(--naranja); flex-shrink: 0; }
.info-item span { display: block; font-size: 0.8rem; opacity: 0.75; text-transform: uppercase; letter-spacing: 0.05em; }
.info-item strong { display: block; font-size: 1rem; }

/* Sections base */
section { padding: 80px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 50px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--texto-suave); font-size: 1.05rem; }
.center { text-align: center; margin-top: 32px; }

/* Servicios */
.services { background: var(--gris-bg); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--blanco);
  padding: 32px 28px;
  border-radius: var(--radio);
  box-shadow: var(--sombra-sm);
  border: 1px solid var(--gris-borde);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra-lg);
  border-color: var(--naranja);
}
.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radio-sm);
  background: linear-gradient(135deg, var(--azul) 0%, var(--azul-light) 100%);
  color: var(--blanco);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.service-icon svg { width: 28px; height: 28px; }
.service-card h3 { margin-bottom: 10px; }
.service-card p { color: var(--texto-suave); }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-image img { border-radius: var(--radio); box-shadow: var(--sombra-lg); }
.about-content h2 { margin-bottom: 20px; }
.about-content p { margin-bottom: 16px; color: var(--texto-suave); }
.about-list { list-style: none; margin-top: 24px; }
.about-list li {
  padding: 10px 0 10px 32px;
  position: relative;
  font-weight: 500;
}
.about-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 10px;
  width: 22px;
  height: 22px;
  background: var(--naranja);
  color: var(--blanco);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}

/* Galería preview */
.gallery-preview { background: var(--gris-bg); }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.gallery-item {
  display: block;
  overflow: hidden;
  border-radius: var(--radio-sm);
  aspect-ratio: 4 / 3;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.gallery-item:hover img { transform: scale(1.05); }

/* FAQ */
.faq { background: var(--gris-bg); }
.faq-list { max-width: 780px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item[open] { border-color: var(--naranja); box-shadow: var(--sombra); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 700;
  color: var(--azul-dark);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--naranja);
  line-height: 1;
  flex-shrink: 0;
  transition: transform .25s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 24px 22px; color: var(--texto-suave); }

/* Stats */
.stats {
  background: var(--azul);
  color: var(--blanco);
  padding: 60px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat strong {
  display: block;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--naranja);
  line-height: 1;
  margin-bottom: 8px;
}
.stat span { font-size: 0.95rem; opacity: 0.9; }

/* CTA final */
.cta-final {
  background: linear-gradient(135deg, var(--naranja) 0%, var(--naranja-dark) 100%);
  color: var(--blanco);
}
.cta-inner { text-align: center; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { color: var(--blanco); margin-bottom: 12px; }
.cta-inner p { margin-bottom: 28px; font-size: 1.1rem; }
.cta-inner .hero-cta { justify-content: center; }

/* Footer */
.site-footer {
  background: var(--azul-dark);
  color: var(--blanco);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-grid h4 { color: var(--blanco); margin-bottom: 16px; }
.footer-grid p { opacity: 0.75; margin-top: 16px; font-size: 0.95rem; }
.footer-logo { filter: brightness(0) invert(1); }
.footer-list { list-style: none; }
.footer-list li { margin-bottom: 10px; }
.footer-list a { opacity: 0.75; transition: opacity .15s, color .15s; font-size: 0.95rem; }
.footer-list a:hover { opacity: 1; color: var(--naranja); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 0.85rem;
  opacity: 0.75;
  flex-wrap: wrap;
  gap: 12px;
}
.credit { color: var(--naranja); transition: opacity .15s; }
.credit:hover { opacity: 0.8; }

/* WhatsApp flotante */
.float-whatsapp {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: #25D366;
  color: var(--blanco);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37,211,102,.4);
  z-index: 40;
  transition: transform .2s;
}
.float-whatsapp:hover { transform: scale(1.1); }

/* Hero de páginas interiores */
.page-hero {
  background: linear-gradient(135deg, var(--azul) 0%, var(--azul-dark) 100%);
  color: var(--blanco);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(245,158,11,.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(59,130,246,.2) 0%, transparent 50%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero h1 { color: var(--blanco); margin-bottom: 12px; }
.page-hero p { font-size: 1.1rem; opacity: 0.9; max-width: 620px; }
.page-hero .eyebrow { color: var(--naranja); }

/* Reveal animado (entrada escalonada) */
@keyframes revealUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  animation: revealUp .7s cubic-bezier(.16,1,.3,1) forwards;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; opacity: 1; }
}

/* ============================================
   Servicios — rediseño editorial
   ============================================ */
.services-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-detail {
  position: relative;
  background: var(--blanco);
  padding: 40px 32px 32px;
  border-radius: var(--radio);
  border: 1px solid var(--gris-borde);
  box-shadow: var(--sombra-sm);
  overflow: hidden;
  isolation: isolate;
  transition: transform .3s cubic-bezier(.16,1,.3,1), box-shadow .3s ease, border-color .3s ease;
}
/* Barra de acento superior que crece en hover */
.service-detail::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--naranja), var(--naranja-dark));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s cubic-bezier(.16,1,.3,1);
}
/* Número índice gigante de fondo */
.service-detail .service-num {
  position: absolute;
  top: -10px;
  right: 14px;
  font-size: 6rem;
  font-weight: 800;
  line-height: 1;
  color: var(--azul);
  opacity: 0.06;
  z-index: -1;
  letter-spacing: -0.05em;
  transition: opacity .3s ease, color .3s ease;
}
.service-detail:hover {
  transform: translateY(-6px);
  box-shadow: var(--sombra-lg);
  border-color: transparent;
}
.service-detail:hover::before { transform: scaleX(1); }
.service-detail:hover .service-num { opacity: 0.1; color: var(--naranja); }
.service-detail .service-icon {
  margin-bottom: 22px;
  transition: transform .3s cubic-bezier(.16,1,.3,1);
}
.service-detail:hover .service-icon { transform: rotate(-6deg) scale(1.05); }
.service-detail h3 { margin-bottom: 12px; }
.service-detail p { color: var(--texto-suave); }

/* Servicio destacado a ancho completo */
.service-detail.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 28px;
  padding: 36px 40px;
  background: linear-gradient(135deg, var(--azul) 0%, var(--azul-dark) 100%);
  border-color: transparent;
}
.service-detail.featured .service-num { color: #fff; }
.service-detail.featured:hover .service-num { color: var(--naranja); opacity: 0.18; }
.service-detail.featured .service-icon {
  margin-bottom: 0;
  width: 68px; height: 68px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
}
.service-detail.featured h3 { color: #fff; }
.service-detail.featured p { color: rgba(255,255,255,.85); margin-bottom: 0; }
.service-detail.featured .feat-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--azul-dark);
  background: var(--naranja);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

/* Galería — item oculto hasta "ver más" */
.gallery-item.is-hidden { display: none; }

/* Lightbox / visor */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10,15,30,.92);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, visibility .25s ease;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: 88vw;
  max-height: 84vh;
  border-radius: var(--radio-sm);
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
  transform: scale(.96);
  transition: transform .25s cubic-bezier(.16,1,.3,1);
}
.lightbox.open img { transform: scale(1); }
.lb-btn {
  position: absolute;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  color: #fff;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}
.lb-btn:hover { background: var(--naranja); border-color: var(--naranja); transform: scale(1.08); }
.lb-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 24px; top: 50%; transform: translateY(-50%); }
.lb-prev:hover, .lb-next:hover { transform: translateY(-50%) scale(1.08); }
.lb-close { top: 24px; right: 24px; width: 46px; height: 46px; }
.lb-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.8);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  background: rgba(0,0,0,.3);
  padding: 6px 16px;
  border-radius: 999px;
}

/* Banda showcase con imagen (servicios) */
.service-showcase {
  position: relative;
  padding: 120px 0;
  background: var(--azul-dark);
  overflow: hidden;
}
.service-showcase img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}
.service-showcase::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(23,37,84,.92) 0%, rgba(30,58,138,.6) 60%, rgba(30,58,138,.2) 100%);
}
.service-showcase .container { position: relative; z-index: 1; max-width: 640px; }
.service-showcase .eyebrow { color: var(--naranja); }
.service-showcase h2 { color: var(--blanco); margin-bottom: 16px; }
.service-showcase p { color: rgba(255,255,255,.88); font-size: 1.1rem; margin-bottom: 28px; }

/* ============================================
   Contacto — rediseño UX
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: start;
}
.contact-intro h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.1rem); margin-bottom: 14px; }
.contact-intro > p { color: var(--texto-suave); font-size: 1.05rem; margin-bottom: 32px; max-width: 440px; }

.contact-cards { display: grid; gap: 14px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--blanco);
  padding: 18px 22px;
  border-radius: var(--radio);
  border: 1px solid var(--gris-borde);
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.contact-card[href]:hover {
  border-color: var(--naranja);
  transform: translateX(6px);
  box-shadow: var(--sombra);
}
.contact-card .service-icon {
  margin-bottom: 0;
  width: 46px; height: 46px;
  flex-shrink: 0;
  border-radius: 50%;
}
.contact-card .service-icon svg { width: 22px; height: 22px; }
.contact-card span { display: block; font-size: 0.78rem; color: var(--texto-suave); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 2px; }
.contact-card strong { display: block; font-size: 1.05rem; color: var(--azul-dark); }
.contact-card .arrow { margin-left: auto; color: var(--gris-borde); transition: color .25s ease, transform .25s ease; }
.contact-card[href]:hover .arrow { color: var(--naranja); transform: translateX(4px); }

/* Formulario destacado sobre fondo azul */
.contact-form {
  position: relative;
  background: linear-gradient(160deg, var(--azul) 0%, var(--azul-dark) 100%);
  color: var(--blanco);
  padding: 40px 36px;
  border-radius: var(--radio);
  box-shadow: var(--sombra-lg);
  overflow: hidden;
}
.contact-form::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 10%, rgba(245,158,11,.18) 0%, transparent 55%);
  pointer-events: none;
}
.contact-form > * { position: relative; }
.contact-form .form-head { margin-bottom: 26px; }
.contact-form .form-head .eyebrow { color: var(--naranja); margin-bottom: 6px; }
.contact-form .form-head h3 { color: var(--blanco); font-size: 1.4rem; }
.contact-form .field { margin-bottom: 18px; }
.contact-form label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: rgba(255,255,255,.85);
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radio-sm);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--blanco);
  background: rgba(255,255,255,.07);
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,.45); }
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--naranja);
  background: rgba(255,255,255,.12);
  box-shadow: 0 0 0 3px rgba(245,158,11,.2);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form .btn { width: 100%; margin-top: 4px; }
.contact-form .form-note {
  margin-top: 14px;
  font-size: 0.8rem;
  color: rgba(255,255,255,.6);
  text-align: center;
}

/* Mapa en banda full-width */
.map-band { padding: 0; }
.map-band iframe {
  width: 100%;
  height: 420px;
  border: 0;
  display: block;
  filter: grayscale(.3) contrast(1.05);
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 60px 0; text-align: center; }
  .hero .lead { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-image { max-width: 480px; margin: 0 auto; }
  .services-grid, .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .info-grid { grid-template-columns: 1fr; gap: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .services-list { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .map-band iframe { height: 340px; }
}

@media (max-width: 720px) {
  /* Menú fullscreen */
  .nav {
    display: flex;
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0;
    background: linear-gradient(160deg, var(--azul) 0%, var(--azul-dark) 100%);
    z-index: 45;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.06);
    transition: opacity .35s ease, transform .45s cubic-bezier(.16,1,.3,1), visibility .35s;
  }
  .nav.open { opacity: 1; visibility: visible; transform: scale(1); }
  .nav-link {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    padding: 16px 0;
    border: 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .4s ease, transform .5s cubic-bezier(.16,1,.3,1), color .15s ease;
  }
  .nav-link::after { display: none; }
  .nav-link.active { color: var(--naranja); }
  .nav.open .nav-link { opacity: 1; transform: translateY(0); }
  .nav.open .nav-link:nth-child(1) { transition-delay: .12s; }
  .nav.open .nav-link:nth-child(2) { transition-delay: .19s; }
  .nav.open .nav-link:nth-child(3) { transition-delay: .26s; }
  .nav.open .nav-link:nth-child(4) { transition-delay: .33s; }

  .btn-call span { display: none; }
  .nav-toggle { display: flex; position: relative; z-index: 50; }
  /* Hamburguesa -> X cuando está abierto */
  .nav-toggle[aria-expanded="true"] span { background: #fff; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  section { padding: 60px 0; }
  .services-grid, .gallery-grid, .footer-grid, .services-list { grid-template-columns: 1fr; }
  .footer-grid { gap: 28px; }
  .contact-form { padding: 32px 24px; }
  .service-showcase { padding: 72px 0; }
  .service-detail.featured { grid-template-columns: 1fr; gap: 18px; padding: 32px 24px; text-align: left; }
  .lb-btn { width: 42px; height: 42px; }
  .lb-prev { left: 10px; }
  .lb-next { right: 10px; }
  .lightbox img { max-width: 94vw; }
  .footer-bottom { flex-direction: column; text-align: center; }
}