:root{
  /* Base dossier (PDF) + premium (Hersa) + impacto (Erka) */
  --ink:#0f1216;
  --ink2:#141821;
  --paper:#f4f5f7;
  --paper2:#ffffff;
  --muted:#58606e;
  --line:#d8dbe2;

  --accent:#f2b400;
  --accent2:#ffd24a;

  --radius:18px;
  --shadow:0 18px 55px rgba(0,0,0,.12);
  --shadow2:0 10px 25px rgba(0,0,0,.10);

  --max:1180px;
}

*{box-sizing:border-box}
html,body{
  margin:0;padding:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(var(--max),92%);margin:0 auto}

/* =========================
   Fondos “no planos” (PDF)
========================= */
.bg-paper{
  position:fixed;inset:0;z-index:-5;pointer-events:none;
  background:
    radial-gradient(1000px 520px at 10% 0%, rgba(242,180,0,.12), transparent 55%),
    radial-gradient(900px 460px at 90% 20%, rgba(0,0,0,.10), transparent 55%),
    linear-gradient(180deg, var(--paper2), var(--paper));
}
.bg-grid{
  position:fixed;inset:0;z-index:-4;pointer-events:none;
  opacity:.22;
  background:
    linear-gradient(to right, rgba(0,0,0,.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,0,0,.06) 1px, transparent 1px);
  background-size: 90px 90px;
  mask-image: radial-gradient(circle at 25% 0%, black 0%, transparent 62%);
}
.bg-blueprint{
  position:fixed;inset:0;z-index:-3;pointer-events:none;
  background:url("../img/bg-blueprint-soft.jpg") no-repeat right top / cover;
  opacity:.16;
  filter: grayscale(1) contrast(1.05);
}

/* =========================
   Header (limpio tipo Hersa)
========================= */
.topbar{
  position:sticky;top:0;z-index:80;
  background:rgba(244,245,247,.88);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px 0;
}
.brand{
  display:flex;align-items:center;gap:12px;
}
.brand .logo-plate{
  width:52px;height:52px;border-radius:14px;
  background:var(--paper2);
  border:1px solid var(--line);
  box-shadow:var(--shadow2);
  display:grid;place-items:center;
}
.brand img{height:36px;width:auto}
.brand .name{font-weight:900;letter-spacing:.10em}
.brand .tag{font-size:12px;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}

.menu{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.menu a{
  font-size:14px;
  padding:10px 12px;
  border-radius:12px;
}
.menu a:hover{background:#e9ebf0}
.menu a.active{background:#e9ebf0;border:1px solid #d7dae2}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 14px;border-radius:12px;
  border:1px solid var(--ink);
  background:transparent;
  font-weight:900;font-size:14px;
  transition:.2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-accent{
  border-color:rgba(242,180,0,.8);
  background:linear-gradient(180deg, rgba(242,180,0,.22), rgba(242,180,0,.06));
  box-shadow: inset 0 0 0 1px rgba(242,180,0,.20);
}
.btn-soft{
  border-color:rgba(255,255,255,.75);
  color:#fff;
}

/* Burger */
.burger{
  display:none;
  width:46px;height:46px;border-radius:12px;
  border:1px solid var(--line);background:var(--paper2);
}
.burger span{display:block;height:2px;background:#1a1a1a;margin:6px 10px;border-radius:2px}

/* Mobile nav */
.mobile{position:fixed;inset:0;z-index:140;display:none}
.mobile.open{display:block}
.mobile .backdrop{position:absolute;inset:0;background:rgba(0,0,0,.25)}
.mobile .panel{
  position:absolute;left:12px;right:12px;top:12px;
  background:var(--paper2);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
  padding:12px;
}
.mobile .row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}
.mobile .close{width:46px;height:46px;border-radius:12px;border:1px solid var(--line);background:var(--paper)}
.mobile .panel a{display:block;padding:14px 12px;border-radius:12px}
.mobile .panel a:hover{background:#eef0f4}

/* =========================
   HERO (Erka-like)
========================= */
.hero{
  padding:18px 0 10px;
}
.heroWrap{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  min-height:620px;
  background:
    linear-gradient(90deg, rgba(0,0,0,.68), rgba(0,0,0,.28)),
    url("../img/placeholders/ph2.jpg") center/cover no-repeat;
}

/* overlay técnico + textura (PDF) */
.heroWrap::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(900px 520px at 18% 0%, rgba(242,180,0,.28), transparent 60%),
    linear-gradient(180deg, transparent, rgba(0,0,0,.20));
}

/* blueprint dentro del hero */
.heroWrap::after{
  content:"";
  position:absolute;inset:0;
  background:url("../img/bg-blueprint-soft.jpg") no-repeat right top/cover;
  opacity:.14;
  filter: grayscale(1) contrast(1.05);
  mix-blend-mode: screen;
}

/* banda dossier */
.heroBar{
  position:absolute;left:0;right:0;top:0;
  background:linear-gradient(90deg, #0b0c10, #111);
  color:#fff;
  padding:16px 18px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.heroBar .chip{
  border-left:4px solid var(--accent);
  padding-left:12px;
}
.heroBar .chip .h1{font-weight:900;letter-spacing:.14em}
.heroBar .chip .sub{font-size:12px;color:rgba(255,255,255,.78);letter-spacing:.14em;text-transform:uppercase}

/* diagonales Erka */
.heroDiag{
  position:absolute;right:-140px;top:-140px;
  width:380px;height:380px;
  background:conic-gradient(from 90deg, rgba(242,180,0,.95), rgba(242,180,0,.55));
  transform:rotate(14deg);
  opacity:.55;
  pointer-events:none;
}
.heroLine{
  position:absolute;left:-40px;bottom:120px;
  width:260px;height:260px;
  border:1px solid rgba(242,180,0,.35);
  transform:rotate(25deg);
  opacity:.65;
  pointer-events:none;
}

/* contenido */
.heroContent{
  position:absolute;
  left:18px;right:18px;
  bottom:18px;
  max-width:880px;
  color:#fff;
}
.heroTitle{
  font-size:56px;line-height:1.02;margin:0 0 10px;
  text-shadow:0 10px 30px rgba(0,0,0,.35);
}
.heroText{
  margin:0 0 16px;
  color:rgba(255,255,255,.84);
  max-width:72ch;
}
.heroCTA{display:flex;gap:12px;flex-wrap:wrap}

/* KPIs (cards oscuras) */
.kpis{
  margin-top:16px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
}
.kpi{
  background:rgba(17,17,17,.72);
  border:1px solid rgba(255,255,255,.10);
  border-radius:16px;
  padding:12px 12px;
  backdrop-filter: blur(6px);
}
.kpi .big{font-weight:900;font-size:22px}
.kpi .label{font-size:12px;color:rgba(255,255,255,.74);margin-top:4px}

/* =========================
   Secciones (Hersa orden + PDF acentos)
========================= */
.section{padding:26px 0}
.sectionTitle{
  display:flex;align-items:center;gap:10px;
  font-size:22px;margin:0 0 14px;
}
.sectionTitle:before{
  content:"";
  width:10px;height:10px;background:var(--accent);
  transform:rotate(45deg);
}

/* separador */
.divider{
  height:26px;
  background:
    linear-gradient(135deg, transparent 0 40%, rgba(242,180,0,.18) 40% 42%, transparent 42% 100%),
    linear-gradient(315deg, transparent 0 60%, rgba(0,0,0,.08) 60% 62%, transparent 62% 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.grid{display:grid;gap:14px}
.grid.cols2{grid-template-columns:repeat(2,1fr)}
.grid.cols3{grid-template-columns:repeat(3,1fr)}

.card{
  border-radius:16px;
  border:1px solid var(--line);
  background:var(--paper2);
  padding:16px;
  box-shadow:0 10px 24px rgba(0,0,0,.06);
  transition:.25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(0,0,0,.08)}
.card .label{color:var(--muted);font-size:13px;margin:8px 0 0}

.card.dark{
  background:linear-gradient(180deg, var(--ink2), #0f1216);
  color:#fff;
  border-color:#0e0e0e;
  position:relative;
  overflow:hidden;
}
.card.dark::after{
  content:"";
  position:absolute;right:-55px;top:18px;
  width:140px;height:140px;
  border:1px solid rgba(242,180,0,.35);
  transform:rotate(25deg);
}
.card.dark .label{color:rgba(255,255,255,.72)}

/* servicios (Erka vibe) */
.service{
  position:relative;
  padding-left:18px;
}
.service::before{
  content:"";
  position:absolute;left:0;top:4px;
  width:6px;height:24px;border-radius:999px;
  background:linear-gradient(180deg, var(--accent), rgba(242,180,0,.25));
}

/* CTA final */
.ctaBlock{
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:
    linear-gradient(90deg, rgba(0,0,0,.70), rgba(0,0,0,.25)),
    url("../img/placeholders/ph3.jpg") center/cover no-repeat;
  position:relative;
}
.ctaBlock::after{
  content:"";
  position:absolute;inset:0;
  background:url("../img/bg-blueprint-soft.jpg") no-repeat right top/cover;
  opacity:.10;
  filter: grayscale(1) contrast(1.05);
  mix-blend-mode: screen;
}
.ctaInner{
  position:relative;
  padding:22px;
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.ctaInner p{margin:8px 0 0;color:rgba(255,255,255,.80)}

/* Footer */
.footer{
  margin-top:18px;
  border-top:1px solid var(--line);
  padding:18px 0;
  color:var(--muted);
  font-size:13px;
}

/* =========================
   Reveal animation
========================= */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.show{
  opacity:1;
  transform:none;
}

/* =========================
   Responsive
========================= */
@media (max-width: 980px){
  .heroTitle{font-size:44px}
  .heroWrap{min-height:660px}
}
@media (max-width: 860px){
  .menu{display:none}
  .burger{display:block}
  .kpis{grid-template-columns:1fr}
}
@media (max-width: 740px){
  .grid.cols2,.grid.cols3{grid-template-columns:1fr}
  .heroTitle{font-size:36px}
  .heroWrap{min-height:700px}
}
/* ===== Proyectos (V3) ===== */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.chipBtn{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 12px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.75);
  font-weight:800;font-size:13px;
  transition:.2s ease;
}
.chipBtn:hover{transform:translateY(-1px)}
.chipBtn.active{
  border-color:rgba(242,180,0,.75);
  box-shadow: inset 0 0 0 1px rgba(242,180,0,.18);
  background:linear-gradient(180deg, rgba(242,180,0,.18), rgba(242,180,0,.06));
}

.projectsGrid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:14px;
}
.projectCard{
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper2);
  box-shadow:0 10px 24px rgba(0,0,0,.06);
  transition:.25s ease;
}
.projectCard:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(0,0,0,.08)}
.projectMedia{
  height:190px;
  background-size:cover;
  background-position:center;
  position:relative;
}
.projectMedia:after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.35));
}
.projectBody{padding:14px}
.projectMeta{
  display:flex;gap:10px;flex-wrap:wrap;
  margin-top:10px;
}
.pill{
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fafbfc;
  color:var(--muted);
}
.pill.accent{
  border-color:rgba(242,180,0,.55);
  background:rgba(242,180,0,.10);
  color:#3a2a00;
  font-weight:800;
}

@media (max-width: 980px){
  .projectsGrid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 740px){
  .projectsGrid{grid-template-columns:1fr}
  .projectMedia{height:210px}
}
/* ===== HOME refinado (V3+) ===== */

/* HERO: brillo y líneas en movimiento (muy sutil) */
.heroWrap{
  will-change: transform;
  transform-style: preserve-3d;
}

.heroGlow{
  position:absolute;inset:-40%;
  background: radial-gradient(circle at 20% 20%, rgba(242,180,0,.18), transparent 45%);
  filter: blur(18px);
  opacity:.85;
  pointer-events:none;
  animation: glowShift 10s ease-in-out infinite alternate;
}
@keyframes glowShift{
  from{transform:translate3d(-2%, -1%, 0)}
  to{transform:translate3d(2%, 1%, 0)}
}

.heroScan{
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(255,255,255,.00) 0px,
      rgba(255,255,255,.00) 48px,
      rgba(255,255,255,.06) 49px,
      rgba(255,255,255,.00) 50px
    );
  opacity:.10;
  mix-blend-mode: overlay;
  pointer-events:none;
  animation: scanMove 14s linear infinite;
}
@keyframes scanMove{
  from{transform:translateX(-8%)}
  to{transform:translateX(8%)}
}

/* Banda tipo "placa" premium para títulos (Hersa vibes) */
.leadPlate{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.28);
  backdrop-filter: blur(8px);
  margin-bottom:10px;
}
.leadDot{
  width:10px;height:10px;background:var(--accent);
  transform:rotate(45deg);
}

/* STRIP de stats más Erka */
.statsStrip{
  margin-top:14px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:12px;
}
.stat{
  background:rgba(17,17,17,.76);
  border:1px solid rgba(255,255,255,.10);
  border-radius:16px;
  padding:14px 14px;
  backdrop-filter: blur(8px);
}
.stat .n{font-weight:950;font-size:24px;color:#fff}
.stat .t{font-size:12px;color:rgba(255,255,255,.74);margin-top:4px}

/* Cards con imagen (Servicios/Proyectos) */
.mediaCard{
  overflow:hidden;
  border-radius:18px;
  border:1px solid var(--line);
  background:var(--paper2);
  box-shadow:0 10px 24px rgba(0,0,0,.06);
  transition:.25s ease;
}
.mediaCard:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(0,0,0,.08)}
.mediaTop{
  height:150px;
  background-size:cover;
  background-position:center;
  position:relative;
}
.mediaTop:after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,.06), rgba(0,0,0,.40));
}
.mediaBody{padding:14px}
.mediaBody .label{color:var(--muted);font-size:13px;margin:8px 0 0}
.mediaTags{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}

.tagPill{
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fafbfc;
  color:var(--muted);
}
.tagPill.accent{
  border-color:rgba(242,180,0,.55);
  background:rgba(242,180,0,.10);
  color:#3a2a00;
  font-weight:850;
}

/* Ajustes responsive */
@media (max-width: 980px){
  .statsStrip{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 740px){
  .statsStrip{grid-template-columns:1fr}
  .mediaTop{height:190px}
}
/* Botón secundario tipo Erka */
.btn-outline{
  border-color: rgba(255,255,255,.55);
  color:#fff;
  background: transparent;
}
.btn-outline:hover{
  background: rgba(255,255,255,.10);
}
/* FIX: overlays del hero no deben bloquear clicks */
.heroWrap::before,
.heroWrap::after,
.heroScan,
.heroGlow,
.heroDiag,
.heroLine{
  pointer-events: none !important;
}

/* FIX: asegurar que contenido y barra estén arriba */
.heroBar,
.heroContent{
  position: relative;
  z-index: 5;
}

/* (opcional) por orden de capas */
.heroWrap::before{ z-index: 1; }
.heroWrap::after { z-index: 2; }
.heroGlow{ z-index: 2; }
.heroScan{ z-index: 3; }
/* ===== Servicios PRO (V3) ===== */
.servicesHead{
  display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-bottom:12px;
}
.servicesHead .hint{color:var(--muted);font-size:13px;max-width:70ch}

/* grid de servicios visual */
.servicesGrid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
}
.serviceCard{
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper2);
  box-shadow:0 10px 24px rgba(0,0,0,.06);
  transition:.25s ease;
}
.serviceCard:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 38px rgba(0,0,0,.08);
}
.serviceCover{
  height:160px;
  background-size:cover;
  background-position:center;
  position:relative;
}
.serviceCover:after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(260px 160px at 12% 0%, rgba(242,180,0,.28), transparent 55%),
    linear-gradient(180deg, rgba(0,0,0,.05), rgba(0,0,0,.45));
}
.serviceBody{padding:14px}
.serviceTitle{display:flex;align-items:center;justify-content:space-between;gap:10px}
.serviceTitle strong{font-size:16px}
.serviceDesc{color:var(--muted);font-size:13px;margin:8px 0 0;line-height:1.5}
.serviceMeta{
  display:flex;gap:10px;flex-wrap:wrap;margin-top:10px
}
.sPill{
  font-size:12px;
  padding:6px 10px;border-radius:999px;
  border:1px solid var(--line);
  background:#fafbfc;color:var(--muted);
}
.sPill.accent{
  border-color:rgba(242,180,0,.55);
  background:rgba(242,180,0,.10);
  color:#3a2a00;
  font-weight:850;
}

/* Bloque “Proceso” con pasos estilo dossier */
.steps{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:12px;
}
.step{
  border-radius:16px;
  border:1px solid var(--line);
  background:var(--paper2);
  padding:14px;
  box-shadow:0 10px 24px rgba(0,0,0,.06);
}
.step .n{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:10px;
  background:rgba(242,180,0,.14);
  border:1px solid rgba(242,180,0,.35);
  font-weight:900;
}
.step strong{display:block;margin-top:10px}
.step p{margin:8px 0 0;color:var(--muted);font-size:13px;line-height:1.5}

/* Responsive */
@media (max-width: 980px){
  .servicesGrid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 740px){
  .servicesGrid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .serviceCover{height:200px}
}