/* ==========================================================================
   ENCO - Sistema de diseño (estyle.css)
   --------------------------------------------------------------------------
   Paleta: Blanco | Azul técnico | Verde energía | Negro profundo
   Estética: clean, elegante, micro-interacciones precisas.

   Arquitectura del archivo:
    01. Design tokens (variables)
    02. Reset y base
    03. Utilidades (icono, botones, eyebrow, chips, reveal, draw)
    04. Header / navegación + barra de progreso
    05. Hero (composición, panel solar, contadores)
    06. Bandas (confianza, eco)
    07. Tarjetas de servicios
    08. Sección "Por qué ENCO"
    09. Proceso
    10. CTA
    11. Sub-páginas
    12. Formularios
    13. Footer
    14. Animaciones (keyframes)
    15. Responsive
    16. Accesibilidad / reduced-motion

   Easing maestro: cubic-bezier(0.16, 1, 0.3, 1) = "expo-out".
   ========================================================================== */

/* ==========================================================================
   01. DESIGN TOKENS
   ========================================================================== */
:root {
  /* Azules (tecnología, confianza) */
  --enco-blue:        #0b63e5;
  --enco-blue-deep:   #0847a8;
  --enco-blue-soft:   #e9f1fe;

  /* Verdes (energía limpia, sostenibilidad) */
  --enco-green:       #0fa47c;
  --enco-green-deep:  #0b7f60;
  --enco-green-soft:  #e5f7f1;
  --enco-lime:        #84cc16;

  /* Neutros */
  --enco-navy:        #0a1226;
  --enco-ink:         #070b14;
  --enco-white:       #ffffff;
  --enco-off:         #f5f7fb;
  --enco-gray:        #66728a;
  --enco-line:        #e6eaf2;

  /* Gradientes característicos */
  --grad-signature: linear-gradient(120deg, #0b63e5 0%, #0fa47c 100%);
  --grad-blue:      linear-gradient(135deg, #0b63e5 0%, #2f7df6 100%);
  --grad-green:     linear-gradient(135deg, #0fa47c 0%, #16c79a 100%);
  --grad-dark:      linear-gradient(160deg, #0a1226 0%, #0f203f 100%);
  --grad-text:      linear-gradient(120deg, #0b63e5 0%, #12a684 100%);

  /* Tipografía */
  --font-display: 'Sora', 'Inter', system-ui, sans-serif;
  --font-body:    'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Radios */
  --radius-sm: 10px;
  --radius:    16px;
  --radius-lg: 26px;
  --radius-xl: 36px;

  /* Sombras */
  --shadow-sm:   0 2px 10px rgba(10, 18, 38, .05);
  --shadow:      0 14px 38px rgba(10, 18, 38, .08);
  --shadow-lg:   0 30px 70px rgba(10, 18, 38, .14);
  --shadow-blue: 0 14px 34px rgba(11, 99, 229, .25);
  --shadow-green:0 14px 34px rgba(15, 164, 124, .25);

  /* Curva maestro */
  --ease: cubic-bezier(.16, 1, .3, 1);
  --dur: .45s;

  /* Espaciado base de sección */
  --section-y: 110px;
}

/* ==========================================================================
   02. RESET Y BASE
   ========================================================================== */
*,
*::before,
*::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--enco-navy);
  background: var(--enco-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -.025em;
}

::selection { background: var(--enco-blue); color: #fff; }

::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--enco-off); }
::-webkit-scrollbar-thumb { background: #c6cfe0; border-radius: 20px; }
::-webkit-scrollbar-thumb:hover { background: var(--enco-blue); }

:focus-visible {
  outline: 3px solid rgba(11, 99, 229, .5);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ==========================================================================
   03. UTILIDADES
   ========================================================================== */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Icono vectorial (usa el sprite de icons.js) */
.icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  vertical-align: middle;
}

/* --- Botones --- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .95rem;
  padding: 15px 28px;
  border-radius: 14px;
  border: 2px solid transparent;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}
.btn .icon { width: 1.05em; height: 1.05em; }

.btn-sm { padding: 11px 18px; font-size: .9rem; }
.btn-md { padding: 14px 24px; font-size: .95rem; }
.btn-lg { padding: 17px 32px; font-size: 1rem; }
.btn-xl { padding: 19px 36px; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* Efecto "sheen": barrido de luz al hover */
.btn::after {
  content: '';
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg);
  transition: left .7s var(--ease);
  pointer-events: none;
}
.btn:hover::after { left: 130%; }

.btn-primary {
  background: var(--grad-blue);
  color: #fff;
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 46px rgba(11, 99, 229, .38);
}

.btn-green {
  background: var(--grad-green);
  color: #fff;
  box-shadow: var(--shadow-green);
}
.btn-green:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 46px rgba(15, 164, 124, .4);
}

.btn-ghost {
  background: transparent;
  color: var(--enco-navy);
  border-color: var(--enco-line);
}
.btn-ghost:hover {
  border-color: var(--enco-blue);
  color: var(--enco-blue);
  background: var(--enco-blue-soft);
  transform: translateY(-3px);
}

.btn-ghost-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.35);
}
.btn-ghost-light:hover {
  border-color: #fff;
  background: rgba(255,255,255,.08);
  transform: translateY(-3px);
}

.btn-light {
  background: #fff;
  color: var(--enco-blue-deep);
  box-shadow: var(--shadow);
}
.btn-light:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-whatsapp { background: #1faf5a; color: #fff; box-shadow: 0 14px 34px rgba(31,175,90,.3); }
.btn-whatsapp:hover { transform: translateY(-3px); background: #189a4c; }

.btn:disabled { opacity: .65; cursor: not-allowed; transform: none !important; box-shadow: none; }

/* Icono que rota/desliza dentro de botones al hover */
.btn .icon { transition: transform var(--dur) var(--ease); }
.btn:hover .icon-slide { transform: translateX(4px); }

/* --- Eyebrow (etiqueta superior) --- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--enco-blue);
  background: var(--enco-blue-soft);
  padding: 8px 16px;
  border-radius: 60px;
  margin-bottom: 20px;
}
.eyebrow .icon { width: .95em; height: .95em; }
.eyebrow.center { display: flex; width: fit-content; margin-left: auto; margin-right: auto; }
.eyebrow.green { color: var(--enco-green-deep); background: var(--enco-green-soft); }
.eyebrow.light { background: rgba(255,255,255,.1); color: #9cc0f5; }

/* --- Texto degradado firma --- */
.grad { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }

/* --- Chips (confianza) --- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 60px;
  background: #fff;
  border: 1px solid var(--enco-line);
  font-size: .85rem;
  font-weight: 600;
  color: var(--enco-navy);
  box-shadow: var(--shadow-sm);
}
.chip .icon { color: var(--enco-green); }

/* --- Secciones --- */
.section { padding: var(--section-y) 0; }
.section-tight { padding: 70px 0; }
.section-dark {
  background: var(--grad-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section-title { font-size: clamp(1.9rem, 4vw, 2.8rem); font-weight: 800; margin-bottom: 16px; }
.section-title.light { color: #fff; }
.section-sub { color: var(--enco-gray); font-size: 1.06rem; max-width: 580px; }
.section-sub.light { color: #b6c4e2; }
.section-head { margin-bottom: 58px; max-width: 740px; }
.section-head.center { margin: 0 auto 58px; text-align: center; }
.section-head.center .section-sub { margin: 0 auto; }

/* Divisor fino con gradiente */
.rule { height: 1px; background: linear-gradient(90deg, transparent, var(--enco-line) 20%, var(--enco-line) 80%, transparent); border: none; margin: 0; }

/* ==========================================================================
   04. HEADER / NAVEGACIÓN
   ========================================================================== */

/* Barra de progreso de scroll (azul -> verde) */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 100%;
  background: var(--grad-signature);
  transform-origin: 0 50%;
  transform: scaleX(0);
  z-index: 2000;
  pointer-events: none;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.scrolled {
  background: rgba(255,255,255,.94);
  border-color: var(--enco-line);
  box-shadow: 0 8px 30px rgba(10,18,38,.06);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  gap: 24px;
}

/* Logo */
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 42px; height: 42px;
  border-radius: 13px;
  display: grid; place-items: center;
  background: var(--grad-signature);
  color: #fff;
  box-shadow: var(--shadow-blue);
  transition: transform .5s var(--ease);
}
.brand-mark .icon { width: 22px; height: 22px; }
.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.06); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; letter-spacing: -.02em; color: var(--enco-navy); }
.brand-tag { font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; color: var(--enco-gray); }

/* Navegación desktop */
.main-nav ul { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border-radius: 11px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--enco-navy);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-signature);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease);
}
.nav-link:hover { color: var(--enco-blue); }
.nav-link.active { color: var(--enco-blue); background: var(--enco-blue-soft); }
.nav-link.active::after { transform: scaleX(1); }
.nav-link .icon { width: .92em; height: .92em; opacity: .7; }

.nav-actions { display: flex; align-items: center; gap: 12px; }

/* Hamburguesa */
.nav-toggle {
  display: none;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--enco-off);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 1100;
}
.nav-toggle span {
  width: 20px; height: 2px;
  border-radius: 2px;
  background: var(--enco-navy);
  transition: transform .4s var(--ease), opacity .3s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(.3); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   05. HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 150px 0 90px;
  overflow: hidden;
  background:
    radial-gradient(52% 60% at 78% 12%, rgba(15,164,124,.14), transparent 60%),
    radial-gradient(40% 50% at 8% 85%, rgba(11,99,229,.16), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #f2f6fd 100%);
}

/* Red de fondo sutil */
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(11,99,229,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,99,229,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(60% 70% at 50% 40%, #000 25%, transparent 78%);
          mask-image: radial-gradient(60% 70% at 50% 40%, #000 25%, transparent 78%);
  pointer-events: none;
}

/* Orbes (muy suaves, pocos) */
.orb { position: absolute; border-radius: 50%; filter: blur(70px); pointer-events: none; }
.orb-a {
  width: 340px; height: 340px;
  background: radial-gradient(circle, rgba(11,99,229,.18), transparent 70%);
  top: -80px; right: 6%;
  animation: drift 18s ease-in-out infinite;
}
.orb-b {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(15,164,124,.16), transparent 70%);
  bottom: -100px; left: 2%;
  animation: drift 22s ease-in-out infinite reverse;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: 60px;
  align-items: center;
}

/* --- Columna texto --- */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--enco-navy);
  background: rgba(255,255,255,.85);
  border: 1px solid var(--enco-line);
  box-shadow: var(--shadow-sm);
  padding: 9px 16px;
  border-radius: 60px;
  margin-bottom: 28px;
  backdrop-filter: blur(6px);
}
.hero-badge .pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--enco-green);
  animation: pulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.4rem, 5.4vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.05;
  color: var(--enco-navy);
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 1.12rem;
  color: var(--enco-gray);
  max-width: 520px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 46px; }

/* Contadores de estadísticas */
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--enco-navy);
  display: inline-flex;
  align-items: baseline;
  gap: 1px;
}
.stat-num .suffix { color: var(--enco-blue); }
.stat-label { font-size: .82rem; color: var(--enco-gray); }

/* --- Columna visual (panel solar) --- */
.hero-visual { position: relative; display: grid; place-items: center; }

.hero-scene { position: relative; width: 100%; max-width: 430px; }
.hero-scene svg { width: 100%; height: auto; }
.scene-label { font-family: Sora, Inter, sans-serif; font-weight: 700; }
.scene-float {
  animation: floatScene 7s ease-in-out infinite;
  will-change: transform;
}
.scene-float svg { width: 100%; height: auto; }

/* Etiqueta flotante "generando ahora" */
.scene-chip {
  position: absolute;
  left: -6%;
  top: 8%;
  display: flex;
  align-items: center;
  gap: 9px;
  background: #fff;
  border: 1px solid var(--enco-line);
  border-radius: 14px;
  padding: 11px 15px;
  box-shadow: var(--shadow);
  animation: floatScene 6s ease-in-out infinite reverse;
}
.scene-chip .icon { color: var(--enco-green); width: 1.15em; height: 1.15em; }
.scene-chip strong { font-family: var(--font-display); font-size: .95rem; display: block; line-height: 1.1; }
.scene-chip span { font-size: .72rem; color: var(--enco-gray); }

/* Etiqueta flotante inferior */
.scene-chip-alt {
  position: absolute;
  right: -4%;
  bottom: 12%;
  display: flex;
  align-items: center;
  gap: 9px;
  background: var(--enco-navy);
  color: #fff;
  border-radius: 14px;
  padding: 11px 15px;
  box-shadow: var(--shadow-lg);
  animation: floatScene 8s ease-in-out infinite;
}
.scene-chip-alt .icon { color: #38bdf8; width: 1.15em; height: 1.15em; }
.scene-chip-alt strong { font-family: var(--font-display); font-size: .95rem; display: block; line-height: 1.1; }
.scene-chip-alt span { font-size: .72rem; color: #9fb2d6; }

/* Línea de energía animada dentro del SVG (dash) */
.hero-scene .flow-line {
  stroke-dasharray: 6 10;
  animation: dashFlow 1.4s linear infinite;
}
.hero-scene .pulse-end { animation: pulseDot 1.6s ease-in-out infinite; transform-origin: center; }

/* Cabecera de páginas internas (compacta, reutiliza identidad del hero) */
.page-head {
  position: relative;
  padding: 168px 0 78px;
  overflow: hidden;
  background:
    radial-gradient(46% 70% at 82% 6%, rgba(15,164,124,.13), transparent 62%),
    radial-gradient(38% 60% at 8% 90%, rgba(11,99,229,.15), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #f2f6fd 100%);
  border-bottom: 1px solid var(--enco-line);
}
.page-head-inner { position: relative; max-width: 860px; }
.page-head .hero-badge,
.page-head .hero-title,
.page-head .hero-sub { max-width: 720px; }
.page-head .hero-title { margin-bottom: 18px; }

/* ==========================================================================
   06. BANDAS
   ========================================================================== */

/* Banda de confianza */
.trust-bar {
  background: var(--enco-navy);
  padding: 34px 0;
  color: #a6b4d2;
}
.trust-title {
  text-align: center;
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: #5f6f92;
  margin-bottom: 22px;
}
.trust-chips { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.trust-chips .chip {
  background: rgba(255,255,255,.04);
  border-color: rgba(255,255,255,.1);
  color: #dfe7f8;
  box-shadow: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.trust-chips .chip:hover { border-color: rgba(15,164,124,.6); transform: translateY(-3px); }
.trust-chips .icon { color: var(--enco-green); }

/* Banda eco (verde) */
.eco-band {
  position: relative;
  background:
    radial-gradient(50% 80% at 88% 12%, rgba(255,255,255,.12), transparent 60%),
    var(--grad-green);
  color: #fff;
  overflow: hidden;
  padding: 74px 0;
}
.eco-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.eco-stats { display: flex; gap: 48px; flex-wrap: wrap; }
.eco-stat { display: flex; flex-direction: column; }
.eco-stat strong {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
}
.eco-stat span { opacity: .85; font-size: .88rem; }

/* ==========================================================================
   07. TARJETAS DE SERVICIOS
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--enco-line);
  border-radius: var(--radius);
  padding: 34px 30px;
  overflow: hidden;
  transition: transform .55s var(--ease), box-shadow .55s var(--ease), border-color .55s var(--ease);
}
/* Borde degradado superior al hover */
.card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--grad-signature);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .6s var(--ease);
}
.card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad-signature);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
          mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0;
  transition: opacity .5s var(--ease);
  pointer-events: none;
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.card:hover::before { transform: scaleX(1); }
.card:hover::after { opacity: 1; }

/* Iluminación que sigue al cursor (JS añade --mx / --my) */
.card-glow {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(280px circle at var(--mx,50%) var(--my,50%), rgba(11,99,229,.08), transparent 65%);
  opacity: 0;
  transition: opacity .4s var(--ease);
  pointer-events: none;
}
.card:hover .card-glow { opacity: 1; }

/* Icono de tarjeta */
.card-icon {
  width: 60px; height: 60px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: var(--enco-blue-soft);
  color: var(--enco-blue);
  margin-bottom: 22px;
  transition: background .5s var(--ease), color .5s var(--ease), transform .5s var(--ease);
}
.card-icon .icon { width: 28px; height: 28px; }
.service-card:hover .card-icon {
  background: var(--grad-signature);
  color: #fff;
  transform: rotate(-6deg) scale(1.06);
}

.service-card h3 { font-size: 1.28rem; margin-bottom: 10px; }
.service-card p { color: var(--enco-gray); font-size: .94rem; margin-bottom: 22px; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: .9rem;
  color: var(--enco-blue);
}
.card-link .icon { width: .95em; height: .95em; transition: transform .4s var(--ease); }
.service-card:hover .card-link .icon { transform: translateX(5px); }

/* ==========================================================================
   08. POR QUÉ ENCO
   ========================================================================== */
.why-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.why-list { margin: 28px 0 34px; display: grid; gap: 15px; }
.why-list li { display: flex; align-items: flex-start; gap: 12px; color: #d9e4f7; font-size: 1.01rem; }
.why-list .icon { color: var(--enco-green); width: 1.3em; height: 1.3em; margin-top: 2px; }

/* Tarjetas de calidad con barras */
.quality-card {
  display: flex;
  gap: 18px;
  align-items: center;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 16px;
  transition: transform .5s var(--ease), background .5s var(--ease), border-color .5s var(--ease);
}
.quality-card:hover { transform: translateX(8px); background: rgba(255,255,255,.07); border-color: rgba(15,164,124,.35); }
.quality-ring {
  flex-shrink: 0;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--grad-signature);
  color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 12px 26px rgba(11,99,229,.3);
}
.quality-ring .icon { width: 26px; height: 26px; }
.quality-wrap { flex: 1; }
.quality-num { font-family: var(--font-display); font-size: 1.05rem; display: flex; justify-content: space-between; }
.quality-bar { background: rgba(255,255,255,.12); height: 7px; border-radius: 20px; margin: 8px 0 4px; overflow: hidden; }
.quality-bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 20px;
  background: var(--grad-green);
  transition: width 1.4s var(--ease);
}
.quality-card.in-view .quality-bar span { width: var(--w); }
.quality-info { color: #93a3c4; font-size: .85rem; }

/* Medalla circular giratoria (texto en círculo) */
.badge-rotator {
  width: 168px; height: 168px;
  margin: 40px auto 0;
  display: grid; place-items: center;
  position: relative;
}
.badge-rotator svg { width: 100%; height: 100%; animation: spin 22s linear infinite; }
.badge-rotator .rot-text { fill: #7f90b5; font-size: 10.5px; letter-spacing: 2.6px; font-family: var(--font-body); font-weight: 600; }
.badge-rotator .rot-core {
  position: absolute;
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--grad-signature);
  color: #fff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-blue);
}
.badge-rotator .rot-core .icon { width: 24px; height: 24px; }

/* ==========================================================================
   09. PROCESO
   ========================================================================== */
.process-wrap { position: relative; padding-top: 16px; }
.process-steps { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.step {
  position: relative;
  flex: 1;
  min-width: 150px;
  text-align: center;
  padding: 30px 18px;
  background: var(--enco-off);
  border: 1px solid var(--enco-line);
  border-radius: var(--radius);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .5s var(--ease);
}
.step:hover { transform: translateY(-7px); box-shadow: var(--shadow); border-color: rgba(11,99,229,.25); }
.step-top { display: flex; justify-content: center; align-items: center; gap: 10px; margin-bottom: 16px; }
.step-num {
  font-family: var(--font-display);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--enco-blue);
  background: var(--enco-blue-soft);
  padding: 4px 10px;
  border-radius: 40px;
}
.step-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--grad-signature);
  color: #fff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-blue);
}
.step-icon .icon { width: 24px; height: 24px; }
.step h4 { font-size: 1.04rem; margin-bottom: 8px; }
.step p { color: var(--enco-gray); font-size: .88rem; }

/* Flechas conectoras */
.step-connector { align-self: center; color: #c6cfe0; margin-top: 18px; }
.step-connector .icon { width: 1em; height: 1em; transition: color .4s var(--ease), transform .4s var(--ease); }
.step:hover + .step-connector .icon, .step-connector:hover .icon { color: var(--enco-green); transform: translateX(3px); }

/* ==========================================================================
   10. CTA
   ========================================================================== */
.cta-band {
  position: relative;
  padding: 72px 0;
  background: var(--grad-signature);
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(44% 90% at 82% 8%, rgba(255,255,255,.16), transparent 60%),
    radial-gradient(30% 70% at 6% 92%, rgba(255,255,255,.1), transparent 60%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  flex-wrap: wrap;
}
.cta-text { max-width: 600px; color: #fff; }
.cta-text h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 10px; }
.cta-text p { color: rgba(255,255,255,.85); }

/* ==========================================================================
   11. SUB-PÁGINAS
   ========================================================================== */
.sub-hero {
  position: relative;
  padding: 158px 0 86px;
  text-align: center;
  color: #fff;
  background:
    radial-gradient(40% 60% at 85% 10%, rgba(15,164,124,.22), transparent 60%),
    radial-gradient(36% 55% at 10% 90%, rgba(11,99,229,.3), transparent 60%),
    var(--grad-dark);
  overflow: hidden;
}
.sub-hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(60% 80% at 50% 30%, #000 25%, transparent 78%);
          mask-image: radial-gradient(60% 80% at 50% 30%, #000 25%, transparent 78%);
  pointer-events: none;
}
.sub-hero-content { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.sub-hero-content .eyebrow.light { margin: 0 auto 22px; }
.sub-hero-title {
  font-size: clamp(2.1rem, 5vw, 3.3rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 18px;
}
.sub-hero-sub { color: #b8c7e5; font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* Kits de energía solar */
.kits-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.kit-card { display: flex; flex-direction: column; }
.kit-card.featured {
  border-color: transparent;
  background:
    linear-gradient(#fff, #fff) padding-box,
    var(--grad-signature) border-box;
  box-shadow: var(--shadow);
  transform: scale(1.02);
}
.kit-card.featured:hover { transform: scale(1.02) translateY(-8px); }
.kit-badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--enco-blue);
  background: var(--enco-blue-soft);
  padding: 6px 12px;
  border-radius: 40px;
  margin-bottom: 18px;
}
.kit-badge.green { color: var(--enco-green-deep); background: var(--enco-green-soft); }
.kit-icon {
  width: 58px; height: 58px;
  border-radius: 15px;
  display: grid; place-items: center;
  background: var(--enco-green-soft);
  color: var(--enco-green-deep);
  margin-bottom: 16px;
}
.kit-icon .icon { width: 28px; height: 28px; }
.kit-card h3 { font-size: 1.32rem; margin-bottom: 14px; }
.kit-features { display: grid; gap: 11px; margin-bottom: 24px; }
.kit-features li { display: flex; gap: 10px; color: var(--enco-gray); font-size: .93rem; align-items: flex-start; }
.kit-features .icon { color: var(--enco-green); width: 1.15em; height: 1.15em; margin-top: 3px; }
.kit-card .btn { margin-top: auto; }

/* Beneficios solares */
.benefits-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.benefit { text-align: center; background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.09); color: #fff; }
.benefit:hover { background: rgba(255,255,255,.07); }
.benefit .card-icon { margin: 0 auto 18px; background: rgba(15,164,124,.16); color: #3dd7a8; }
.benefit:hover .card-icon { background: var(--grad-green); color: #fff; }
.benefit h4 { font-size: 1.05rem; margin-bottom: 8px; }
.benefit p { color: #a9b8d8; font-size: .9rem; }

/* ROI */
.roi-calc {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center;
  background: rgba(255,255,255,.045);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 42px;
}
.roi-text h3 { font-size: 1.55rem; margin-bottom: 12px; }
.roi-text p { color: #aebcdc; margin-bottom: 26px; }
.roi-chart { display: flex; gap: 34px; justify-content: center; align-items: flex-end; height: 170px; }
.roi-bar { width: 76px; height: 100%; background: rgba(255,255,255,.07); border-radius: 12px 12px 4px 4px; position: relative; overflow: hidden; }
.bar-fill {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 0;
  border-radius: 12px 12px 4px 4px;
  transition: height 1.5s var(--ease);
}
.roi-calc.in-view .bar-grid .bar-fill { height: 34%; }
.roi-calc.in-view .bar-solar .bar-fill { height: 86%; }
.bar-grid .bar-fill { background: linear-gradient(180deg, #7d8aa6, #41506e); }
.bar-solar .bar-fill { background: var(--grad-green); }
.roi-legend { display: flex; gap: 24px; justify-content: center; margin-top: 16px; color: #c6d3ee; font-size: .86rem; }
.roi-legend span { display: inline-flex; align-items: center; gap: 8px; }
.roi-sq { width: 12px; height: 12px; border-radius: 3px; }
.roi-sq.grid { background: #41506e; }
.roi-sq.solar { background: var(--enco-green); }

/* Detalle de servicios */
.service-detail {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 64px;
  align-items: center;
  padding: 52px 0;
  border-bottom: 1px solid var(--enco-line);
}
.service-detail:last-child { border-bottom: none; }
.service-detail.alter { grid-template-columns: 1.1fr .9fr; }
.service-detail.alter .service-visual { order: 2; }
.service-detail.alter .service-info { order: 1; }

.service-visual { display: grid; place-items: center; position: relative; }
.visual-icon {
  width: 190px; height: 190px;
  border-radius: 50%;
  background: var(--enco-blue-soft);
  color: var(--enco-blue);
  display: grid; place-items: center;
  position: relative;
  box-shadow: inset 0 0 0 1px rgba(11,99,229,.08);
  animation: float 6s ease-in-out infinite;
}
.visual-icon:nth-of-type(2), .service-detail.alter .visual-icon { background: var(--enco-green-soft); color: var(--enco-green-deep); }
.visual-icon .icon { width: 76px; height: 76px; }
.visual-icon::after {
  content: '';
  position: absolute; inset: -26px;
  border-radius: 50%;
  border: 1.5px dashed rgba(11,99,229,.22);
  animation: spin 26s linear infinite;
}
.detail-badge {
  position: absolute;
  bottom: 6px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--enco-green-deep);
  background: #fff;
  border: 1px solid var(--enco-line);
  padding: 7px 14px;
  border-radius: 40px;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}
.detail-badge .icon { color: var(--enco-green); width: .95em; height: .95em; }
.service-info .section-title { font-size: 1.95rem; margin-bottom: 16px; }
.service-info > p { color: var(--enco-gray); margin-bottom: 22px; }
.service-list { display: grid; gap: 12px; margin-bottom: 28px; }
.service-list li { display: flex; gap: 11px; color: var(--enco-navy); font-size: .96rem; align-items: flex-start; }
.service-list .icon { color: var(--enco-green); width: 1.2em; height: 1.2em; margin-top: 3px; }

/* ==========================================================================
   12. FORMULARIOS
   ========================================================================== */
.booking-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 52px; align-items: start; }
.booking-side h3 { font-size: 1.32rem; margin-bottom: 24px; }

.side-note {
  display: flex;
  gap: 15px;
  align-items: flex-start;
  background: var(--enco-off);
  border: 1px solid var(--enco-line);
  border-radius: var(--radius);
  padding: 19px;
  margin-bottom: 13px;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.side-note:hover { border-color: rgba(11,99,229,.3); transform: translateX(4px); }
.side-note .icon { width: 1.35em; height: 1.35em; color: var(--enco-blue); margin-top: 2px; }
.side-note strong { display: block; font-size: .95rem; margin-bottom: 2px; }
.side-note p { color: var(--enco-gray); font-size: .87rem; }

.side-contact {
  margin-top: 26px;
  padding: 26px;
  border-radius: var(--radius);
  background: var(--grad-dark);
  color: #fff;
  text-align: center;
}
.side-contact > p { color: #c2cfe9; margin-bottom: 16px; }

.form-shell {
  background: #fff;
  border: 1px solid var(--enco-line);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.form-shell::before {
  content: '';
  position: absolute; inset: 0 0 auto 0;
  height: 4px;
  background: var(--grad-signature);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 8px; }
.req { color: var(--enco-blue); }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--enco-line);
  border-radius: 12px;
  background: var(--enco-off);
  color: var(--enco-navy);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  outline: none;
}
.form-group textarea { resize: vertical; min-height: 96px; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: #a9b4c9; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--enco-blue);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(11,99,229,.1);
}
.form-group select { cursor: pointer; }
.form-group.invalid input,
.form-group.invalid select,
.form-group.invalid textarea { border-color: #e11d48; background: #fff5f6; }

.field-error { display: none; color: #e11d48; font-size: .78rem; margin-top: 6px; }
.form-group.invalid .field-error { display: flex; align-items: center; gap: 5px; }
.field-error .icon { width: .85em; height: .85em; }

/* Mensajes de estado */
.form-status {
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 18px;
  font-size: .94rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}
.form-status.success { background: var(--enco-green-soft); color: var(--enco-green-deep); border: 1px solid #bfe9db; }
.form-status.error { background: #fff1f3; color: #be123c; border: 1px solid #fecdd3; }
.form-status .icon { width: 1.2em; height: 1.2em; flex-shrink: 0; }

.btn-spinner { display: inline-flex; align-items: center; gap: 8px; }
.spinner-icon { animation: spin 1s linear infinite; }

.form-privacy {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--enco-gray);
  text-align: center;
  font-size: .8rem;
}
.form-privacy .icon { color: var(--enco-green); width: 1.05em; height: 1.05em; }

/* ==========================================================================
   13. CONTACTO
   ========================================================================== */
.contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: start; }
.contact-card {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--enco-off);
  border: 1px solid var(--enco-line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 14px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.contact-card:hover { transform: translateX(5px); box-shadow: var(--shadow-sm); border-color: rgba(11,99,229,.25); }
.contact-card > .icon {
  width: 1.5em; height: 1.5em;
  color: var(--enco-blue);
  background: var(--enco-blue-soft);
  padding: 13px;
  box-sizing: content-box;
  border-radius: 13px;
  flex-shrink: 0;
}
.contact-card strong { display: block; font-size: .8rem; color: var(--enco-gray); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 1px; }
.contact-card a, .contact-card span { font-weight: 600; color: var(--enco-navy); }
.contact-card a:hover { color: var(--enco-blue); }

.contact-hours {
  margin-top: 20px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--grad-dark);
  color: #fff;
}
.contact-hours h4 { font-size: 1.05rem; margin-bottom: 14px; }
.contact-hours p { display: flex; justify-content: space-between; color: #c2cfe9; font-size: .92rem; padding: 4px 0; border-bottom: 1px dashed rgba(255,255,255,.08); }
.contact-hours p:last-child { border-bottom: none; }
.contact-hours span { color: #fff; font-weight: 600; }
.contact-hours .icon { color: var(--enco-green); width: 1em; height: 1em; margin-right: 7px; }

/* ==========================================================================
   14. FOOTER
   ========================================================================== */
.site-footer { background: var(--enco-ink); color: #92a0bd; padding: 66px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.footer-brand .brand-name { color: #fff; }
.footer-brand p { margin: 18px 0 22px; font-size: .92rem; max-width: 300px; }
.footer-col h5 { color: #fff; font-size: .95rem; margin-bottom: 20px; }
.footer-col ul { display: grid; gap: 12px; }
.footer-col ul a {
  font-size: .92rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.footer-col ul a .icon { width: .9em; height: .9em; opacity: .65; }
.footer-col ul a:hover { color: #3dd7a8; padding-left: 5px; }
.footer-col ul a:hover .icon { opacity: 1; }
.footer-col ul li:not(.has-icon) a::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--enco-green);
  opacity: .6;
  transition: opacity var(--dur);
}
.footer-col ul li:not(.has-icon) a:hover::before { opacity: 1; }

.contact-list li { display: flex; align-items: flex-start; gap: 10px; font-size: .9rem; }
.contact-list .icon { color: var(--enco-green); width: 1.1em; height: 1.1em; margin-top: 3px; }

.socials { display: flex; gap: 10px; }
.socials a {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: rgba(255,255,255,.05);
  color: #b9c6e0;
  display: grid; place-items: center;
  transition: background .4s var(--ease), color .4s var(--ease), transform .4s var(--ease);
}
.socials a .icon { width: 18px; height: 18px; }
.socials a:hover {
  background: var(--grad-signature);
  color: #fff;
  transform: translateY(-4px);
  box-shadow: var(--shadow-blue);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 26px 0;
  font-size: .84rem;
}
.footer-bottom .icon { color: var(--enco-green); width: .95em; height: .95em; display: inline-block; vertical-align: -2px; }

/* ==========================================================================
   15. ANIMACIONES (clases + keyframes)
   ========================================================================== */

/* Reveal al hacer scroll (el JS añade .visible) */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity .9s var(--ease),
    transform .9s var(--ease);
  transition-delay: var(--d, 0s);
  will-change: opacity, transform;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Reveal lateral */
.reveal-left { transform: translateX(-34px); }
.reveal-left.visible { transform: translateX(0); }
.reveal-right { transform: translateX(34px); }
.reveal-right.visible { transform: translateX(0); }
.reveal-zoom { transform: scale(.94); }
.reveal-zoom.visible { transform: scale(1); }

/* Dibujo de trazado de iconos (el sprite usa pathLength=100) */
.draw path, .draw circle, .draw rect {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  transition: stroke-dashoffset 1.1s var(--ease);
  transition-delay: var(--d, 0s);
}
.draw.in-view path, .draw.in-view circle, .draw.in-view rect { stroke-dashoffset: 0; }

/* Contador actualizable (JS manipula .js-num) */
.js-num { font-variant-numeric: tabular-nums; }

/* Keyframes */
@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(26px, -22px) scale(1.08); }
}
@keyframes floatScene {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-11px); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.6); opacity: .4; }
}
@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: .9; }
  50% { transform: scale(1.45); opacity: .4; }
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes dashFlow { to { stroke-dashoffset: -32; } }

/* Compensación del header fijo al navegar por anclas */
section[id] { scroll-margin-top: 96px; }

/* ==========================================================================
   16. RESPONSIVE
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-content { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .services-grid, .kits-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; gap: 40px; }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { gap: 22px; }
  .step { flex-basis: calc(33.33% - 22px); }
  .step-connector { display: none; }
  .service-detail, .service-detail.alter { grid-template-columns: 1fr; gap: 40px; }
  .service-detail.alter .service-visual { order: -1; }
  .booking-layout, .contact-layout, .roi-calc { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .site-header { background: rgba(255,255,255,.95); }
}

@media (max-width: 820px) {
  .section { --section-y: 84px; }

  /* Menú móvil */
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .main-nav {
    position: fixed;
    top: 78px; left: 0; right: 0;
    max-height: calc(100vh - 78px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    background: #fff;
    border-bottom: 1px solid var(--enco-line);
    box-shadow: var(--shadow);
    padding: 22px 20px 30px;
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all .45s var(--ease);
    z-index: 1050;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 4px; }
  .main-nav li { opacity: 0; transform: translateY(12px); transition: all .45s var(--ease); }
  .main-nav.open li { opacity: 1; transform: translateY(0); }
  .main-nav.open li:nth-child(1) { transition-delay: .04s; }
  .main-nav.open li:nth-child(2) { transition-delay: .09s; }
  .main-nav.open li:nth-child(3) { transition-delay: .14s; }
  .main-nav.open li:nth-child(4) { transition-delay: .19s; }
  .main-nav.open li:nth-child(5) { transition-delay: .24s; }
  .nav-link, .nav-link.active {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    font-size: 1rem;
  }
  .nav-link::after { display: none; }
  body.menu-open { overflow: hidden; }

  .services-grid, .kits-grid, .benefits-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 130px; }
  .hero-content { gap: 40px; }
  .hero-visual { order: 2; }
  .sub-hero { padding: 142px 0 72px; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px 28px; }
  .eco-inner { justify-content: center; text-align: center; }
  .eco-stats { justify-content: center; }
  .scene-chip { left: 0; }
  .scene-chip-alt { right: 0; }

  /* Hero en móvil: la escena pasa a flujo normal y las tarjetas
     flotantes dejan de superponerse (columna centrada). */
  .hero-scene {
    position: static;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    width: 100%;
  }
  .hero-scene svg { max-width: 100%; }
  .scene-chip, .scene-chip-alt {
    position: static;
    width: fit-content;
    max-width: 100%;
  }

  /* Proceso en columna para pantallas pequeñas */
  .process-steps { gap: 14px; justify-content: stretch; }
  .step { flex-basis: 100%; max-width: 100%; min-width: 0; }
  .step-top { gap: 8px; }

  .hide-sm { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .form-shell { padding: 26px 20px; }
  .btn-xl { font-size: .95rem; padding: 17px 26px; }
  .hero-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; justify-content: center; text-align: center; gap: 6px; }
  .hero-visual { max-width: 340px; margin: 0 auto; }
  .stat-num { font-size: 1.6rem; }
  .roi-graphic { display: none; }

  /* Hero proporcional para pantallas pequeñas */
  .hero { min-height: auto; padding: 118px 0 60px; }
  .hero-content { gap: 34px; }
  .hero-badge { font-size: .76rem; padding: 8px 14px; margin-bottom: 16px; }
  .hero-title { font-size: clamp(1.75rem, 8vw, 2.25rem); line-height: 1.2; letter-spacing: -.025em; margin-bottom: 16px; }
  .hero-sub { font-size: 1.03rem; margin-bottom: 24px; }
  .hero-actions {
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
  }
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .stat { align-items: center; text-align: center; }
  .stat-num { font-size: 1.5rem; }
  .stat-label { font-size: .78rem; }
  .hero-scene { max-width: 340px; margin: 0 auto; }
  .scene-label { display: none; }

  .page-head { padding: 138px 0 58px; }

  /* Secciones y tarjetas */
  .section-head { margin-bottom: 40px; }
  .card { padding: 26px 22px; }
  .service-detail, .service-detail.alter { gap: 28px; padding: 40px 0; }
  .visual-icon { width: 148px; height: 148px; }
  .visual-icon .icon { width: 58px; height: 58px; }
  .visual-icon::after { inset: -20px; }

  /* Kits y ROI */
  .kits-grid { gap: 18px; }
  .kit-card.featured, .kit-card.featured:hover { transform: none; }
  .roi-calc { padding: 26px 20px; margin-top: 40px; gap: 28px; }
  .roi-chart { height: 140px; gap: 24px; }
  .roi-bar { width: 60px; }
  .roi-legend { gap: 14px; flex-wrap: wrap; font-size: .84rem; }

  /* Proceso, badge y calidad */
  .step { padding: 26px 16px; }
  .badge-rotator { width: 138px; height: 138px; margin: 32px auto 0; }
  .quality-card { padding: 18px; gap: 14px; }

  /* Confianza */
  .trust-chips { gap: 10px; }
  .trust-chips .chip { font-size: .8rem; padding: 8px 13px; }

  /* CTA y bandas */
  .cta-inner { justify-content: center; text-align: center; }
  .cta-inner .btn { width: 100%; }
  .cta-band { padding: 58px 0; }
  .eco-band { padding: 58px 0; }
  .eco-stats { gap: 26px 34px; }
  .eco-stat strong { font-size: 1.7rem; }

  /* Formularios */
  .booking-layout, .contact-layout { gap: 36px; }
  .form-shell { padding: 24px 18px; }
  .form-group { margin-bottom: 18px; }
}

@media (max-width: 380px) {
  .hero-scene { max-width: 100%; }
  .scene-chip, .scene-chip-alt { padding: 9px 12px; }
  .brand-tag { display: none; }
  .hero-stats { gap: 10px; }
}

/* ==========================================================================
   17. ACCESIBILIDAD
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal, .reveal-left, .reveal-right, .reveal-zoom { opacity: 1 !important; transform: none !important; }
  .draw path, .draw circle, .draw rect { stroke-dashoffset: 0 !important; transition: none; }
  .quality-bar span { width: var(--w) !important; }
  .roi-calc.in-view .bar-grid .bar-fill { height: 34% !important; }
  .roi-calc.in-view .bar-solar .bar-fill { height: 86% !important; }
}