/* ============================================================
   Electricidad C&C — Hoja de estilos principal
   ------------------------------------------------------------
   ORGANIZACIÓN:
   1. Variables y base
   2. Utilidades y botones
   3. Topbar + Header + navegación móvil
   4. Hero
   5. Secciones genéricas y tarjetas
   6. Secciones específicas (empalmes, galería, pasos, etc.)
   7. Formulario y contacto
   8. Footer + flotantes
   9. Responsive (tablet / desktop)
   10. Animaciones y accesibilidad
   ============================================================ */

/* ---------- 1. Variables y base ---------- */
:root{
  /* Identidad: azul oscuro + azul eléctrico + blanco + dorado/rayo */
  --azul-950:#060f1f;
  --azul-900:#0a1a2f;
  --azul-800:#0e2440;
  --azul-700:#13315a;
  --azul-electrico:#0f6bff;
  --azul-electrico-claro:#2f8bff;
  --celeste:#e8f1ff;
  --dorado:#ffc400;
  --dorado-oscuro:#e0a800;
  --blanco:#ffffff;
  --gris-50:#f4f6f9;
  --gris-100:#e9edf3;
  --gris-300:#c3ccd8;
  --gris-600:#5b6b82;
  --gris-900:#1d2735;
  --verde-wsp:#22c55e;
  --verde-wsp-oscuro:#16a34a;
  --sombra-sm:0 2px 10px rgba(6,15,31,.08);
  --sombra-md:0 10px 30px rgba(6,15,31,.14);
  --sombra-lg:0 20px 60px rgba(6,15,31,.22);
  --radio:16px;
  --radio-sm:10px;
  --max:1160px;
  --fuente:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--fuente);
  color:var(--gris-900);
  background:var(--blanco);
  line-height:1.6;
  -webkit-text-size-adjust:100%;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--azul-electrico)}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .6em;color:var(--azul-900)}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}
.container{width:min(var(--max),100% - 2.5rem);margin-inline:auto}
section{padding:3.2rem 0}
::selection{background:var(--dorado);color:var(--azul-950)}

/* ---------- 2. Utilidades y botones ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.8rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--azul-electrico);background:var(--celeste);
  border:1px solid #cfe1ff;border-radius:999px;padding:.35rem .9rem;margin-bottom:1rem;
}
.eyebrow--dark{color:var(--dorado);background:rgba(255,196,0,.12);border-color:rgba(255,196,0,.35)}
.eyebrow--gold{color:#5c4300;background:#fff4cc;border-color:#ffe27a}
.section-title{font-size:clamp(1.55rem,1.2rem + 2vw,2.4rem);letter-spacing:-.02em}
.section-sub{color:var(--gris-600);max-width:62ch;font-size:1.02rem}
.center{text-align:center}
.muted{color:var(--gris-600)}
.small{font-size:.88rem}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.6rem;
  font-weight:800;font-size:1rem;line-height:1.2;text-decoration:none;
  border-radius:14px;padding:1rem 1.4rem;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
  min-height:54px;
}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--dorado);color:var(--azul-950);box-shadow:0 8px 24px rgba(255,196,0,.35)}
.btn--primary:hover{background:#ffd21f}
.btn--wsp{background:var(--verde-wsp);color:#fff;box-shadow:0 8px 24px rgba(34,197,94,.35)}
.btn--wsp:hover{background:var(--verde-wsp-oscuro)}
.btn--azul{background:var(--azul-electrico);color:#fff}
.btn--azul:hover{background:var(--azul-electrico-claro)}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35)}
.btn--ghost:hover{background:rgba(255,255,255,.16)}
.btn--outline{background:#fff;color:var(--azul-900);border-color:var(--gris-300)}
.btn--outline:hover{border-color:var(--azul-electrico);color:var(--azul-electrico)}
.btn--block{width:100%}
.btn svg{flex:none}
[hidden]{display:none!important}

.chip{
  display:inline-flex;align-items:center;gap:.4rem;
  background:#fff;border:1px solid var(--gris-100);border-radius:999px;
  padding:.45rem .85rem;font-size:.86rem;font-weight:700;color:var(--azul-800);
  box-shadow:var(--sombra-sm);white-space:nowrap;
}
.chip .dot{width:8px;height:8px;border-radius:50%;background:var(--verde-wsp)}

/* ---------- 3. Topbar + Header ---------- */
.topbar{
  background:var(--azul-950);color:#cfe0ff;font-size:.82rem;
  padding:.45rem 0;display:none;
}
.topbar .container{display:flex;justify-content:space-between;gap:1rem;align-items:center}
.topbar a{color:#fff;text-decoration:none;font-weight:700;display:inline-block;padding:.55rem .6rem;margin:-.55rem -.6rem}
.topbar a:hover{color:var(--dorado)}

.header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--gris-100);
}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 0}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none}
.brand__logo{width:48px;height:48px;flex:none;border-radius:10px;object-fit:cover}
.mobile-brand{display:inline-flex;align-items:center;gap:.5rem}
.mobile-brand img{border-radius:7px;object-fit:cover}
.brand__name{font-weight:900;color:var(--azul-900);font-size:1.05rem;line-height:1.1;white-space:nowrap}
.brand__name small{display:block;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--gris-600)}
.nav{display:none}
.header__cta{display:none;gap:.5rem}
.header__cta .btn{min-height:46px;padding:.65rem .9rem;font-size:.87rem;white-space:nowrap}

/* Botón hamburguesa */
.menu-btn{
  display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  width:48px;height:48px;border-radius:12px;border:1px solid var(--gris-100);
  background:#fff;cursor:pointer;
}
.menu-btn span{display:block;width:22px;height:2.5px;border-radius:2px;background:var(--azul-900);transition:.2s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* Panel móvil */
.mobile-nav{
  position:fixed;inset:0;z-index:70;pointer-events:none;
}
.mobile-nav__backdrop{
  position:absolute;inset:0;background:rgba(6,15,31,.55);opacity:0;transition:.25s;
}
.mobile-nav__panel{
  position:absolute;top:0;right:0;bottom:0;width:min(360px,88vw);
  background:#fff;box-shadow:var(--sombra-lg);
  transform:translateX(105%);transition:transform .28s ease;
  display:flex;flex-direction:column;overflow:auto;
}
.mobile-nav.open{pointer-events:auto}
.mobile-nav.open .mobile-nav__backdrop{opacity:1}
.mobile-nav.open .mobile-nav__panel{transform:none}
.mobile-nav__head{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.1rem;border-bottom:1px solid var(--gris-100)}
.mobile-nav__head strong{color:var(--azul-900)}
.mobile-nav__close{border:1px solid var(--gris-100);background:#fff;border-radius:10px;width:42px;height:42px;font-size:1.2rem;cursor:pointer}
.mobile-nav__links{padding:.8rem 1.1rem;display:grid;gap:.15rem}
.mobile-nav__links a{
  display:flex;justify-content:space-between;align-items:center;
  padding:.8rem .7rem;border-radius:10px;text-decoration:none;font-weight:700;color:var(--azul-900);
}
.mobile-nav__links a:hover{background:var(--gris-50)}
.mobile-nav__cta{padding:1rem 1.1rem 1.4rem;display:grid;gap:.7rem;border-top:1px solid var(--gris-100)}

/* ---------- 4. Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 420px at 85% -10%,rgba(15,107,255,.38),transparent 60%),
    radial-gradient(700px 380px at 10% 110%,rgba(255,196,0,.14),transparent 60%),
    linear-gradient(180deg,rgba(6,15,31,.94),rgba(10,26,47,.89)),
    url('../assets/img/foto-proyecto-viviendas.jpg') center 62%/cover no-repeat;
  padding:3rem 0 2.6rem;
}
.hero::before{ /* trama técnica */
  content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(700px 420px at 50% 20%,#000 30%,transparent 75%);
}
.hero .container{position:relative}
.hero__grid{display:grid;gap:2rem}
.hero h1{color:#fff;font-size:clamp(1.9rem,1.4rem + 3.2vw,3.1rem);letter-spacing:-.02em;margin:.2rem 0 .7rem}
.hero h1 .rayo{color:var(--dorado)}
.hero__lead{color:#d6e4ff;font-size:clamp(1rem,.95rem + .6vw,1.18rem);max-width:56ch}
.hero__sub{color:#fff;font-weight:700;font-size:clamp(1.02rem,.98rem + .5vw,1.2rem);max-width:56ch;margin:0 0 .6rem}
.hero__bullets{display:grid;gap:.55rem;margin:1.3rem 0;padding:0;list-style:none}
.hero__bullets li{display:flex;gap:.6rem;align-items:flex-start;color:#eaf1ff;font-weight:600;font-size:.97rem}
.hero__bullets svg{flex:none;margin-top:.2rem}
.hero__cta{display:grid;gap:.7rem;margin-top:1.4rem}
.hero__nota{font-size:.85rem;color:#a9bfe6;margin-top:.8rem}
.hero__card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radio);padding:1.3rem;backdrop-filter:blur(6px);
}
.hero__card h2{color:#fff;font-size:1.1rem;margin-bottom:.8rem}
.hero__mini{display:grid;gap:.7rem}
.hero__mini-item{display:flex;gap:.7rem;align-items:flex-start;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:.75rem .85rem}
.hero__mini-item b{color:#fff;display:block;font-size:.95rem}
.hero__mini-item span{color:#bcd0f5;font-size:.86rem}
.hero__mini-num{
  flex:none;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:var(--dorado);color:var(--azul-950);font-weight:900;
}
.hero__dist{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.hero__dist .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2);color:#fff;box-shadow:none}

/* Barra de especialidades bajo el hero */
.strip{background:var(--dorado);padding:.9rem 0;overflow:hidden}
.strip__track{display:flex;gap:.6rem;overflow-x:auto;padding-bottom:.2rem;scrollbar-width:none}
.strip__track::-webkit-scrollbar{display:none}
.strip .chip{border-color:transparent}

/* ---------- 5. Secciones genéricas y tarjetas ---------- */
.section--gris{background:var(--gris-50)}
.section--azul{background:linear-gradient(180deg,var(--azul-900),var(--azul-950));color:#eaf1ff}
.section--azul h2,.section--azul h3{color:#fff}
.section--azul .section-sub{color:#bcd0f5}

.grid{display:grid;gap:1rem}
.grid--servicios{grid-template-columns:1fr;margin-top:1.8rem}
.card{
  background:#fff;border:1px solid var(--gris-100);border-radius:var(--radio);
  padding:1.3rem;box-shadow:var(--sombra-sm);
  display:flex;flex-direction:column;gap:.6rem;
  transition:transform .15s ease,box-shadow .15s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sombra-md)}
.card__icon{
  width:48px;height:48px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--azul-900),var(--azul-electrico));color:#fff;
}
.card__icon--gold{background:linear-gradient(135deg,#8a6a00,var(--dorado-oscuro));color:#fff}
.card h3{font-size:1.05rem;margin:0}
.card p{color:var(--gris-600);font-size:.93rem;margin:0}
.card__link{margin-top:auto;font-weight:800;text-decoration:none;font-size:.92rem}
.card__link:hover{text-decoration:underline}
.card__icon svg,.why-item .ic svg{width:24px;height:24px;display:block}
.info-row .ic svg{width:20px;height:20px;display:block}
.mobile-cta .btn svg{width:18px;height:18px}

/* Split (texto + panel) */
.split{display:grid;gap:1.6rem;align-items:start;margin-top:1.6rem}
.panel{
  background:#fff;border:1px solid var(--gris-100);border-radius:var(--radio);
  box-shadow:var(--sombra-md);overflow:hidden;
}
.panel--azul{background:linear-gradient(160deg,var(--azul-800),var(--azul-950));border-color:rgba(255,255,255,.12);color:#eaf1ff}
.panel__body{padding:1.5rem}
.panel__body h3{margin-top:0}
.checklist{list-style:none;padding:0;margin:0 0 1rem;display:grid;gap:.6rem}
.checklist li{display:flex;gap:.6rem;align-items:flex-start;font-size:.95rem}
.checklist svg{flex:none;margin-top:.2rem}
.panel--azul .checklist li{color:#eaf1ff}

/* ---------- 6a. Empalmes (sección especial) ---------- */
.empalme-hero{
  background:linear-gradient(160deg,#0e2440,#060f1f);
  border:1px solid rgba(255,255,255,.12);border-radius:20px;color:#fff;
  padding:1.6rem;position:relative;overflow:hidden;margin-top:1.6rem;
}
.empalme-hero::after{
  content:"⚡";position:absolute;right:-10px;bottom:-38px;font-size:11rem;opacity:.08;pointer-events:none;
}
.empalme-hero h3{color:var(--dorado);font-size:clamp(1.3rem,1.1rem + 1.4vw,1.8rem);margin:0 0 .5rem}
.empalme-hero p{color:#d6e4ff;max-width:60ch}
.empalme-grid{display:grid;gap:.8rem;margin:1.2rem 0}
.empalme-item{display:flex;gap:.8rem;align-items:flex-start;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:.9rem 1rem}
.empalme-item b{color:#fff;display:block}
.empalme-item span{color:#bcd0f5;font-size:.9rem}
.empalme-item .n{flex:none;width:32px;height:32px;border-radius:10px;background:var(--dorado);color:var(--azul-950);font-weight:900;display:grid;place-items:center}

/* ---------- 6b. Galería ---------- */
.gallery{display:grid;gap:1rem;margin-top:1.6rem;grid-template-columns:1fr}
.g-item{
  position:relative;border-radius:var(--radio);overflow:hidden;
  border:1px solid var(--gris-100);background:#fff;box-shadow:var(--sombra-sm);
}
.g-item figure{margin:0}
.g-item img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--gris-100)}
.obj-top{object-position:center top}
.g-item figcaption{padding:.8rem 1rem;font-size:.88rem;color:var(--gris-600)}
.g-item figcaption b{display:block;color:var(--azul-900);font-size:.95rem}

/* Fotos en secciones (empalmes, instalaciones, solar) */
.foto-strip{display:grid;gap:1rem;margin-top:1.4rem}
.foto-strip figure,.section-foto{margin:0;background:#fff;border:1px solid var(--gris-100);border-radius:var(--radio);overflow:hidden;box-shadow:var(--sombra-sm)}
.foto-strip img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.foto-strip figcaption,.section-foto figcaption{padding:.7rem 1rem;font-size:.86rem;color:var(--gris-600)}
.section-foto{margin-top:1.4rem}
.section-foto img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
@media (min-width:640px){.foto-strip{grid-template-columns:1fr 1fr}}

/* Logo en footer */
.footer-logo{max-width:190px;border-radius:14px;margin-bottom:1rem}

/* ---------- 6c. Pasos ---------- */
.steps{display:grid;gap:.9rem;margin-top:1.6rem;counter-reset:paso}
.step{
  display:flex;gap:1rem;background:#fff;border:1px solid var(--gris-100);
  border-radius:var(--radio);padding:1.2rem;box-shadow:var(--sombra-sm);
}
.step__num{
  counter-increment:paso;flex:none;width:44px;height:44px;border-radius:13px;
  background:var(--azul-900);color:var(--dorado);font-weight:900;font-size:1.15rem;
  display:grid;place-items:center;
}
.step__num::before{content:counter(paso)}
.step h3{font-size:1.02rem;margin:0 0 .25rem}
.step p{margin:0;color:var(--gris-600);font-size:.93rem}

/* ---------- 6d. Zonas ---------- */
.zonas{display:flex;flex-wrap:wrap;gap:.55rem;margin:1.2rem 0}
.zona-pill{
  display:inline-flex;align-items:center;gap:.45rem;
  border-radius:999px;padding:.55rem 1rem;font-weight:800;font-size:.92rem;
  background:var(--azul-900);color:#fff;
}
.zona-pill--soft{background:#fff;border:1px solid var(--gris-300);color:var(--azul-800);font-weight:700}

/* ---------- 6e. Por qué elegirnos ---------- */
.why{display:grid;gap:1rem;margin-top:1.6rem}
.why-item{display:flex;gap:.9rem;align-items:flex-start;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:1.1rem 1.2rem}
.why-item h3{font-size:1rem;margin:0 0 .2rem}
.why-item p{margin:0;color:#bcd0f5;font-size:.92rem}
.why-item .ic{flex:none;width:42px;height:42px;border-radius:12px;background:rgba(255,196,0,.15);border:1px solid rgba(255,196,0,.4);display:grid;place-items:center;color:var(--dorado)}

/* ---------- 6f. Testimonios (espacios reservados, NO inventados) ---------- */
.testis{display:grid;gap:1rem;margin-top:1.6rem}
.testi{
  border:2px dashed var(--gris-300);border-radius:var(--radio);background:#fff;
  padding:1.4rem;text-align:center;color:var(--gris-600);
}
.testi b{color:var(--azul-900);display:block;margin-bottom:.3rem}
.testi .stars{color:var(--dorado-oscuro);letter-spacing:.2em;font-size:1.1rem}

/* ---------- 6g. FAQ ---------- */
.faq{margin-top:1.4rem;display:grid;gap:.7rem}
.faq-item{background:#fff;border:1px solid var(--gris-100);border-radius:14px;overflow:hidden;box-shadow:var(--sombra-sm)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:1rem;
  background:#fff;border:0;cursor:pointer;text-align:left;
  font-weight:800;font-size:.99rem;color:var(--azul-900);padding:1.05rem 1.2rem;
}
.faq-q .plus{
  flex:none;width:30px;height:30px;border-radius:9px;background:var(--celeste);
  color:var(--azul-electrico);font-size:1.2rem;line-height:1;display:grid;place-items:center;
  transition:transform .2s;
}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 1.2rem 1.1rem;margin:0;color:var(--gris-600);font-size:.94rem}

/* ---------- 7. Contacto ---------- */
.contact-grid{display:grid;gap:1.2rem;margin-top:1.6rem}
.form-card{background:#fff;border:1px solid var(--gris-100);border-radius:20px;box-shadow:var(--sombra-md);padding:1.5rem}
.field{margin-bottom:1rem}
.field label{display:block;font-weight:800;font-size:.88rem;color:var(--azul-900);margin-bottom:.35rem}
.field input,.field select,.field textarea{
  width:100%;border:1.5px solid var(--gris-300);border-radius:12px;
  padding:.85rem 1rem;font-size:1rem;font-family:inherit;background:#fff;color:var(--gris-900);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--azul-electrico);box-shadow:0 0 0 3px rgba(15,107,255,.15);
}
.field textarea{min-height:120px;resize:vertical}
.form-hint{font-size:.84rem;color:var(--gris-600)}
.form-ok{
  display:none;background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;
  border-radius:12px;padding:.9rem 1rem;font-size:.92rem;margin-bottom:1rem;
}
.info-card{background:linear-gradient(160deg,var(--azul-800),var(--azul-950));color:#eaf1ff;border-radius:20px;padding:1.5rem;border:1px solid rgba(255,255,255,.12)}
.info-card h3{color:#fff;margin-top:0}
.info-row{display:flex;gap:.8rem;align-items:flex-start;padding:.7rem 0;border-top:1px solid rgba(255,255,255,.12);font-size:.95rem}
.info-row:first-of-type{border-top:0}
.info-row a{color:#fff;font-weight:700;text-decoration:none}
.info-row a:hover{color:var(--dorado)}
.info-row .ic{flex:none;width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.08);display:grid;place-items:center}
.socials{display:flex;gap:.6rem;margin-top:1rem;flex-wrap:wrap}
.socials a{
  display:inline-flex;align-items:center;gap:.5rem;text-decoration:none;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:#fff;font-weight:700;font-size:.88rem;border-radius:999px;padding:.55rem 1rem;
}
.socials a:hover{background:rgba(255,255,255,.16)}

/* ---------- 8. Footer + flotantes ---------- */
.footer{background:var(--azul-950);color:#a9bfe6;padding:2.8rem 0 7.5rem;font-size:.92rem}
.footer a{color:#d6e4ff;text-decoration:none}
.footer a:hover{color:var(--dorado)}
.footer__grid{display:grid;gap:1.6rem}
.footer h4{color:#fff;font-size:.95rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:.8rem}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:.45rem}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:1.8rem;padding-top:1.2rem;display:grid;gap:.5rem;font-size:.84rem}

/* Botón flotante WhatsApp */
.wsp-float{
  position:fixed;right:14px;bottom:88px;z-index:65;
  width:56px;height:56px;border-radius:50%;border:2px solid rgba(255,255,255,.9);
  background:var(--verde-wsp);display:grid;place-items:center;color:#fff;
  box-shadow:0 12px 30px rgba(22,163,74,.5);text-decoration:none;
  transition:transform .15s;
}
.wsp-float:hover{transform:scale(1.06)}
.wsp-float::after{
  content:"";position:absolute;inset:-5px;border-radius:50%;
  border:2px solid rgba(34,197,94,.5);animation:pulse 2s infinite;
}
@keyframes pulse{0%{transform:scale(.95);opacity:1}100%{transform:scale(1.15);opacity:0}}

/* Barra móvil inferior: llamar + solicitar visita */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:64;
  background:rgba(255,255,255,.97);backdrop-filter:blur(8px);
  border-top:1px solid var(--gris-100);padding:.6rem .8rem calc(.6rem + env(safe-area-inset-bottom));
  display:grid;grid-template-columns:1fr 1.4fr;gap:.6rem;
}
.mobile-cta .btn{min-height:50px;padding:.7rem .6rem;font-size:.92rem;border-radius:12px}

/* Ajuste móvil: hero más compacto para llegar antes a la acción */
@media (max-width:639px){
  .hero{padding:2.3rem 0 2rem}
  .hero__bullets{margin:1rem 0}
}

/* ---------- 9. Responsive ---------- */
@media (min-width:640px){
  .hero__cta{grid-template-columns:1fr 1fr;max-width:560px}
  .grid--servicios{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .empalme-grid{grid-template-columns:1fr 1fr}
  .testis{grid-template-columns:1fr 1fr}
}
@media (min-width:960px){
  .topbar{display:block}
  .nav{display:flex;gap:.2rem;align-items:center}
  .nav a{
    text-decoration:none;font-weight:700;font-size:.85rem;color:var(--azul-900);
    padding:.6rem .55rem;border-radius:10px;white-space:nowrap;
  }
  .nav a:hover{background:var(--gris-50);color:var(--azul-electrico)}
  .header__cta{display:flex}
  .menu-btn{display:none}
  .hero{padding:4.5rem 0 4rem}
  .hero__grid{grid-template-columns:1.25fr .9fr;align-items:center}
  .hero__cta{max-width:520px}
  .grid--servicios{grid-template-columns:repeat(3,1fr)}
  .split{grid-template-columns:1.05fr .95fr}
  .split--inv .panel{order:-1}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:1fr 1fr}
  .why{grid-template-columns:1fr 1fr}
  .testis{grid-template-columns:repeat(3,1fr)}
  .contact-grid{grid-template-columns:1.1fr .9fr;align-items:start}
  .footer{padding-bottom:2.5rem}
  .footer__grid{grid-template-columns:1.3fr 1fr 1fr 1fr}
  .mobile-cta{display:none}
  .wsp-float{bottom:24px;right:24px;width:64px;height:64px}
}

/* ---------- 10. Animaciones y accesibilidad ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
:focus-visible{outline:3px solid var(--dorado);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}