/* =========================================================
   CERTELECT — Certificación Eléctrica
   Sistema de diseño · tema mixto (base clara + bloques oscuros)
   ========================================================= */

:root{
  /* Marca */
  --accent:#e31420;          /* rojo del logo */
  --accent-700:#b80f18;
  --accent-300:#ff4651;
  --ink:#1c1d22;             /* tinta oscura (fondos oscuros) */
  --logo-black:#303030;      /* negro exacto del logo */
  --ink-soft:#26272e;
  --ink-line:rgba(255,255,255,.12);

  /* Base clara */
  --bg:#ffffff;
  --bg-soft:#f5f6f8;
  --bg-tint:#fbeceb;         /* rojo muy lavado */
  --text:#1c1d22;
  --muted:#5b6066;
  --line:#e6e8ec;

  /* Estructura */
  --container:1180px;
  --gap:clamp(1.2rem,3vw,2rem);
  --radius:16px;
  --radius-sm:10px;
  --radius-lg:26px;

  /* Sombras */
  --shadow-sm:0 2px 10px rgba(20,21,26,.06);
  --shadow:0 14px 40px rgba(20,21,26,.10);
  --shadow-lg:0 30px 70px rgba(20,21,26,.18);

  /* Tipografía */
  --font-display:"Sora",ui-sans-serif,system-ui,sans-serif;
  --font-body:"Manrope",ui-sans-serif,system-ui,sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* Transiciones de página (cross-fade nativo) */
@view-transition{ navigation:auto; }
::view-transition-old(root),
::view-transition-new(root){
  animation-duration:.15s;
  animation-timing-function:cubic-bezier(.4,0,.2,1);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:88px; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--font-display); line-height:1.1; margin:0 0 .4em; font-weight:700; letter-spacing:-.02em; }
p{ margin:0 0 1rem; }

.container{ width:min(100% - 2.4rem,var(--container)); margin-inline:auto; }
.section{ padding:clamp(4rem,9vw,7.5rem) 0; position:relative; }
.section--soft{ background:var(--bg-soft); }
.section--dark{ background:var(--ink); color:#eef0f3; }
.section--dark p{ color:rgba(238,240,243,.78); }
.section--tight{ padding-block:clamp(3rem,6vw,4.5rem); }

/* ---------- Tipos de texto ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:.55rem;
  font-family:var(--font-display);
  font-size:.74rem; font-weight:600; letter-spacing:.18em; text-transform:uppercase;
  color:var(--accent);
  padding:.4rem .85rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  margin-bottom:1.2rem;
}
.section--dark .eyebrow,
.hero .eyebrow,
.cta .eyebrow{
  color:#fff;
  background:rgba(255,255,255,.06);
  border-color:var(--ink-line);
}
.eyebrow .dot{
  width:7px; height:7px; border-radius:50%; background:var(--accent);
  box-shadow:0 0 0 0 rgba(227,20,32,.6);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(227,20,32,.55); }
  70%{ box-shadow:0 0 0 9px rgba(227,20,32,0); }
  100%{ box-shadow:0 0 0 0 rgba(227,20,32,0); }
}
.section-head{ max-width:680px; margin-bottom:clamp(2rem,4vw,3rem); }
.section-head.center{ margin-inline:auto; text-align:center; }
h2.title{ font-size:clamp(1.9rem,4vw,2.9rem); }
h3{ font-size:1.3rem; }
.lead{ font-size:clamp(1.05rem,1.6vw,1.22rem); color:var(--muted); }
.section--dark .lead{ color:rgba(238,240,243,.8); }

/* ---------- Botones ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.55rem;
  font-family:var(--font-display); font-weight:600; font-size:.98rem;
  padding:.62rem 1.5rem; border-radius:999px;
  border:1.5px solid transparent; cursor:pointer;
  transition:transform .25s var(--ease), background .25s, box-shadow .25s, color .25s, border-color .25s;
  white-space:nowrap;
}
.btn svg{ width:18px; height:18px; }
.btn-primary{ background:var(--accent); color:#fff; box-shadow:0 10px 26px rgba(227,20,32,.28); }
.btn-primary:hover{ background:var(--accent-700); transform:translateY(-2px); box-shadow:0 16px 34px rgba(227,20,32,.34); }
.btn-ghost{ background:transparent; border-color:var(--line); color:var(--text); }
.btn-ghost:hover{ border-color:var(--accent); color:var(--accent); transform:translateY(-2px); }
/* botón fantasma sobre fondos oscuros */
.hero .btn-ghost,
.cta .btn-ghost,
.section--dark .btn-ghost{ color:#fff; border-color:rgba(255,255,255,.35); }
.hero .btn-ghost:hover,
.cta .btn-ghost:hover,
.section--dark .btn-ghost:hover{ border-color:#fff; background:rgba(255,255,255,.08); color:#fff; }

/* ---------- Header ---------- */
.site-header{
  position:fixed; inset:0 0 auto 0; z-index:60;
  transition:background .3s, box-shadow .3s, padding .3s;
  padding:1.05rem 0;
}
.site-header .container{ display:flex; align-items:center; justify-content:space-between; gap:1rem; }
.brand{ display:flex; align-items:center; }
.brand img{ height:85px; width:auto; transition:height .3s; }
.brand .logo-dark{ display:none; }
.site-header.scrolled{ background:rgba(255,255,255,.92); backdrop-filter:blur(12px); box-shadow:0 1px 0 var(--line),0 10px 30px rgba(20,21,26,.06); padding:.7rem 0; }
.site-header.scrolled .brand .logo-light{ display:none; }
.site-header.scrolled .brand .logo-dark{ display:block; }
.site-header.scrolled .brand img{ height:72px; }
.site-header.scrolled .nav a{ color:var(--text); }
.site-header.scrolled .nav-toggle span{ background:var(--text); }

.nav{ display:flex; align-items:center; gap:2rem; }
.nav a{ font-family:var(--font-display); font-weight:500; font-size:.96rem; color:#fff; position:relative; transition:color .2s; }
.nav a::after{ content:""; position:absolute; left:0; bottom:-6px; height:2px; width:0; background:var(--accent); transition:width .3s var(--ease); }
.nav a:hover::after,.nav a.active::after{ width:100%; }
.nav a:hover{ color:var(--accent); }
.header-cta{ display:inline-flex; }

.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px; z-index:80; }
.nav-toggle span{ width:26px; height:2px; background:#fff; border-radius:2px; transition:transform .3s,opacity .3s,background .3s; }
body.menu-open .nav-toggle span:nth-child(1){ transform:translateY(7px) rotate(45deg); background:var(--text); }
body.menu-open .nav-toggle span:nth-child(2){ opacity:0; }
body.menu-open .nav-toggle span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); background:var(--text); }

.backdrop{ position:fixed; inset:0; background:rgba(20,21,26,.5); opacity:0; visibility:hidden; transition:.3s; z-index:55; }
body.menu-open .backdrop{ opacity:1; visibility:visible; }

/* ---------- Hero ---------- */
.hero{
  position:relative; color:#fff; overflow:hidden;
  padding-top:clamp(8rem,16vw,11rem); padding-bottom:clamp(4.5rem,9vw,7rem);
  background:var(--ink);
}
.hero__bg{ position:absolute; inset:0; z-index:0; }
.hero__bg img{ width:100%; height:100%; object-fit:cover; opacity:.34; }
.hero__bg::after{
  content:""; position:absolute; inset:0;
  background:
    radial-gradient(120% 90% at 80% 10%, rgba(227,20,32,.30), transparent 55%),
    linear-gradient(180deg, rgba(20,21,26,.43) 0%, rgba(20,21,26,.55) 78%);
}
.hero .container{ position:relative; z-index:2; }
.hero__inner{ max-width:780px; }
.hero h1{ font-size:clamp(1.9rem,4.6vw,3.4rem); letter-spacing:-.03em; }
.hero h1 .accent{ color:var(--accent-300); }
.hero p.lead{ color:rgba(255,255,255,.82); max-width:700px; margin-bottom:2rem; font-size:clamp(.98rem,1.4vw,1.08rem); }
.hero__actions{ display:flex; flex-wrap:wrap; gap:.9rem; }
.hero__stats{ display:flex; flex-wrap:wrap; gap:clamp(1.6rem,5vw,3.4rem); margin-top:3.2rem; padding-top:2rem; border-top:1px solid var(--ink-line); }
.stat .num{ font-family:var(--font-display); font-weight:700; font-size:clamp(1.7rem,3.4vw,2.4rem); color:#fff; }
.stat .num .accent{ color:var(--accent-300); }
.stat .lbl{ font-size:.85rem; color:rgba(255,255,255,.62); letter-spacing:.02em; }

/* ---------- Marquee ---------- */
.marquee{ background:var(--accent); color:#fff; overflow:hidden; }
.marquee__track{ display:flex; gap:2.4rem; width:max-content; padding:.85rem 0; animation:scroll 28s linear infinite; }
.marquee:hover .marquee__track{ animation-play-state:paused; }
.marquee span{ font-family:var(--font-display); font-weight:600; font-size:.92rem; letter-spacing:.08em; text-transform:uppercase; display:inline-flex; align-items:center; gap:2.4rem; opacity:.95; }
.marquee span::after{ content:"✦"; opacity:.55; }
@keyframes scroll{ to{ transform:translateX(-50%); } }

/* ---------- Servicios ---------- */
.services{ display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(1.2rem,2.5vw,2rem); }
.service-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  overflow:hidden; display:flex; flex-direction:column;
  transition:transform .35s var(--ease), box-shadow .35s, border-color .35s;
}
.service-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); border-color:transparent; }
.service-card__media{ position:relative; aspect-ratio:16/10; overflow:hidden; }
.service-card__media img{ width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.service-card:hover .service-card__media img{ transform:scale(1.06); }
.service-card__num{ position:absolute; top:14px; left:14px; background:var(--accent); color:#fff; font-family:var(--font-display); font-weight:700; font-size:.85rem; padding:.3rem .7rem; border-radius:999px; }
.service-card__body{ padding:1.8rem; display:flex; flex-direction:column; flex:1; }
.service-card h3{ margin-bottom:.6rem; }
.service-card p{ color:var(--muted); font-size:.98rem; }
.service-card .tags{ display:flex; flex-wrap:wrap; align-items:center; gap:.6rem; margin-top:1.1rem; }
.tag{ font-size:.84rem; font-weight:600; font-family:var(--font-display); color:var(--logo-black); }
.tag:not(:last-child)::after{ content:"/"; color:var(--accent); margin-left:.6rem; font-weight:600; }
.service-card .more{ margin-top:auto; padding-top:1.2rem; display:inline-flex; align-items:center; gap:.4rem; font-family:var(--font-display); font-weight:600; font-size:.92rem; color:var(--accent); }
.service-card .more svg{ width:16px; height:16px; transition:transform .25s; }
.service-card:hover .more svg{ transform:translateX(4px); }

/* ---------- Quiénes somos ---------- */
.split{ display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(2rem,5vw,4rem); align-items:center; }
.split__media{ position:relative; }
.split__media img{ border-radius:var(--radius-lg); box-shadow:var(--shadow); width:600px; height:600px; max-width:100%; margin-inline:auto; aspect-ratio:1/1; object-fit:cover; }
.split__badge{
  position:absolute; bottom:-22px; left:-22px;
  background:var(--ink); color:#fff; border-radius:var(--radius);
  padding:1.1rem 1.3rem; box-shadow:var(--shadow-lg); max-width:230px;
}
.split__badge .num{ font-family:var(--font-display); font-weight:700; font-size:1.6rem; color:var(--accent-300); }
.split__badge .txt{ font-size:.82rem; color:rgba(255,255,255,.8); }
.checklist{ list-style:none; padding:0; margin:1.4rem 0 0; display:grid; gap:.85rem; }
.checklist li{ display:flex; gap:.75rem; align-items:flex-start; font-size:1rem; }
.checklist .ic{ flex:0 0 24px; width:24px; height:24px; border-radius:50%; background:var(--bg-tint); color:var(--accent); display:grid; place-items:center; margin-top:2px; }
.checklist .ic svg{ width:14px; height:14px; }

/* ---------- Proceso / metodología ---------- */
#metodologia{ position:relative; isolation:isolate; }
#metodologia::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background:
    linear-gradient(180deg, rgba(20,21,26,.90) 0%, rgba(20,21,26,.94) 100%),
    url("../img/proceso.jpg") center/cover no-repeat;
}
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:1.2rem; counter-reset:step; }
.step{ position:relative; padding:1.8rem; border-radius:var(--radius); background:rgba(255,255,255,.04); border:1px solid var(--ink-line); }
.step__n{ font-family:var(--font-display); font-weight:700; font-size:2rem; color:var(--accent-300); line-height:1; margin-bottom:.7rem; }
.step h3{ font-size:1.1rem; color:#fff; }
.step p{ font-size:.92rem; color:rgba(238,240,243,.7); margin:0; }

/* ---------- Valores ---------- */
.values{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.4rem; }
.value{ padding:1.8rem; border-radius:var(--radius); border:1px solid var(--line); background:#fff; transition:transform .3s var(--ease),box-shadow .3s; }
.value:hover{ transform:translateY(-5px); box-shadow:var(--shadow-sm); }
.value .ic{ width:46px; height:46px; border-radius:12px; background:var(--bg-tint); color:var(--accent); display:grid; place-items:center; margin-bottom:1rem; }
.value .ic svg{ width:24px; height:24px; }
.value h3{ font-size:1.12rem; }
.value p{ color:var(--muted); font-size:.95rem; margin:0; }

/* ---------- FAQ ---------- */
.faq{ max-width:780px; margin-inline:auto; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{ width:100%; text-align:left; background:none; border:0; cursor:pointer; padding:1.4rem 0; display:flex; justify-content:space-between; align-items:center; gap:1rem; font-family:var(--font-display); font-weight:600; font-size:1.08rem; color:var(--text); }
.faq-q .ic{ flex:0 0 26px; width:26px; height:26px; border-radius:50%; border:1.5px solid var(--line); display:grid; place-items:center; transition:.3s; position:relative; }
.faq-q .ic::before,.faq-q .ic::after{ content:""; position:absolute; background:var(--accent); border-radius:2px; }
.faq-q .ic::before{ width:12px; height:2px; }
.faq-q .ic::after{ width:2px; height:12px; transition:transform .3s; }
.faq-item.open .faq-q .ic{ background:var(--accent); border-color:var(--accent); }
.faq-item.open .faq-q .ic::before,.faq-item.open .faq-q .ic::after{ background:#fff; }
.faq-item.open .faq-q .ic::after{ transform:scaleY(0); }
.faq-a{ overflow:hidden; max-height:0; transition:max-height .35s var(--ease); }
.faq-a p{ padding:0 0 1.4rem; color:var(--muted); margin:0; }

/* ---------- CTA ---------- */
.cta{ position:relative; color:#fff; overflow:hidden; background:var(--ink); text-align:center; }
.cta__bg{ position:absolute; inset:0; z-index:0; }
.cta__bg img{ width:100%; height:100%; object-fit:cover; opacity:.18; }
.cta__bg::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(20,21,26,.86),rgba(20,21,26,.94)); }
.cta .container{ position:relative; z-index:2; }
.cta h2{ font-size:clamp(1.9rem,4.5vw,3rem); margin-bottom:.6rem; }
.cta p{ color:rgba(255,255,255,.82); max-width:560px; margin:0 auto 1.8rem; }
.cta__actions{ display:flex; gap:.9rem; justify-content:center; flex-wrap:wrap; }

/* ---------- Contacto ---------- */
.contact-grid{ display:grid; grid-template-columns:.9fr 1.1fr; gap:clamp(2rem,5vw,3.5rem); align-items:start; }
.contact-info .info-item{ display:flex; gap:1rem; align-items:flex-start; padding:1.1rem 0; border-bottom:1px solid var(--line); }
.contact-info .info-item:last-child{ border-bottom:0; }
.contact-info .ic{ flex:0 0 44px; width:44px; height:44px; border-radius:12px; background:var(--bg-tint); color:var(--accent); display:grid; place-items:center; }
.contact-info .ic svg{ width:21px; height:21px; }
.contact-info .k{ font-size:.78rem; text-transform:uppercase; letter-spacing:.1em; color:var(--muted); font-family:var(--font-display); font-weight:600; }
.contact-info .v{ font-size:1.05rem; font-weight:500; color:var(--text); word-break:break-word; }
.contact-info .v a:hover{ color:var(--accent); }

.form{ background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg); padding:clamp(1.6rem,3vw,2.4rem); box-shadow:var(--shadow-sm); }
.field{ margin-bottom:1.1rem; }
.field label{ display:block; font-size:.85rem; font-weight:600; font-family:var(--font-display); margin-bottom:.4rem; color:var(--text); }
.field input,.field textarea,.field select{
  width:100%; padding:.8rem 1rem; border:1.5px solid var(--line); border-radius:var(--radius-sm);
  font-family:var(--font-body); font-size:1rem; color:var(--text); background:var(--bg-soft);
  transition:border-color .2s, background .2s;
}
.field input:focus,.field textarea:focus,.field select:focus{ outline:none; border-color:var(--accent); background:#fff; }
.field textarea{ resize:vertical; min-height:120px; }
.form .btn-primary{ width:100%; justify-content:center; }
.form-note{ font-size:.82rem; color:var(--muted); margin:.9rem 0 0; text-align:center; }

.map-wrap{ margin-top:1.4rem; border-radius:var(--radius); overflow:hidden; border:1px solid var(--line); }
.map-wrap iframe{ width:100%; height:230px; border:0; display:block; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:rgba(238,240,243,.78); padding:clamp(3rem,6vw,4.5rem) 0 1.8rem; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:2.5rem; }
.footer-brand img{ height:46px; margin-bottom:1rem; }
.footer-brand p{ font-size:.95rem; color:rgba(238,240,243,.66); max-width:320px; }
.footer-col h4{ color:#fff; font-size:.95rem; letter-spacing:.04em; margin-bottom:1rem; text-transform:uppercase; }
.footer-col ul{ list-style:none; padding:0; margin:0; display:grid; gap:.6rem; }
.footer-col li{ display:flex; align-items:center; gap:.55rem; }
.footer-col .fic{ width:16px; height:16px; flex:0 0 auto; color:var(--accent-300); }
.footer-col a{ color:rgba(238,240,243,.7); font-size:.95rem; transition:color .2s; }
.footer-col a:hover{ color:var(--accent-300); }
.footer-credit{
  margin-top:24px; padding-top:16px;
  border-top:1px solid rgba(255,255,255,.12);
  text-align:center; font-size:.8rem; color:rgba(255,255,255,.6);
}
.footer-credit a{ color:var(--accent); text-decoration:none; }
.footer-credit a:hover{ color:color-mix(in srgb, var(--accent) 70%, #fff); }

/* ---------- WhatsApp flotante ---------- */
.wa-float{
  position:fixed; right:22px; bottom:22px; z-index:90;
  width:62px; height:62px; border-radius:50%;
  background:#25d366; display:grid; place-items:center;
  box-shadow:0 10px 26px rgba(37,211,102,.45);
  transition:transform .25s var(--ease), box-shadow .25s;
}
.wa-float::before{
  content:""; position:absolute; inset:0; border-radius:50%;
  background:#25d366; z-index:-1; animation:wa-pulse 2.4s var(--ease) infinite;
}
.wa-float:hover{ transform:scale(1.08); box-shadow:0 14px 32px rgba(37,211,102,.55); }
.wa-float svg{ width:34px; height:34px; fill:#fff; }
@keyframes wa-pulse{
  0%{ transform:scale(1); opacity:.55; }
  70%{ transform:scale(1.55); opacity:0; }
  100%{ transform:scale(1.55); opacity:0; }
}
@media (max-width:560px){ .wa-float{ width:54px; height:54px; right:16px; bottom:16px; } .wa-float svg{ width:30px; height:30px; } }

/* ---------- Reveal ---------- */
/* Sin JS: todo visible. Con JS: se oculta para animar el revelado. */
.js .reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
/* Salvavidas: si .js está pero el observer no corrió, revela igual a los 3s. */
.js .reveal{ animation:reveal-failsafe 0s linear 3s forwards; }
@keyframes reveal-failsafe{ to{ opacity:1; transform:none; } }
.reveal[data-delay="1"]{ transition-delay:.08s; }
.reveal[data-delay="2"]{ transition-delay:.16s; }
.reveal[data-delay="3"]{ transition-delay:.24s; }
.reveal[data-delay="4"]{ transition-delay:.32s; }

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .steps{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:880px){
  .nav{
    position:fixed; inset:0 0 0 auto; width:min(82vw,340px);
    background:#fff; flex-direction:column; align-items:flex-start; justify-content:center;
    gap:1.6rem; padding:2.5rem; transform:translateX(105%); transition:transform .35s var(--ease);
    box-shadow:var(--shadow-lg); z-index:70;
  }
  body.menu-open .nav{ transform:translateX(0); }
  .nav a{ color:var(--text); font-size:1.15rem; }
  .header-cta{ display:none; }
  .nav .nav-cta{ display:inline-flex; margin-top:.6rem; }
  .nav-toggle{ display:flex; }
  .services{ grid-template-columns:1fr; }
  .split{ grid-template-columns:1fr; }
  .split__media{ order:-1; }
  .split__badge{ left:auto; right:16px; }
  .values{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:1fr; }
}
@media (min-width:881px){ .nav .nav-cta{ display:none; } }
@media (max-width:560px){
  body{ font-size:16px; }
  .steps{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  .hero__stats{ gap:1.4rem; }
  .btn{ padding:.55rem 1.25rem; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  .reveal{ opacity:1; transform:none; }
  ::view-transition-old(root),::view-transition-new(root){ animation:none; }
}