/* NAPG Ingeniería — estilos compartidos */
:root{
  --accent:#FBA21C; --accent-d:#EE840E; --accent-soft:#FFE7A8;
  --ink:#121417; --ink-2:#1C2026; --base:#F6F4EF; --white:#fff;
  --g1:#5C6168; --g2:#8A8F96; --line:#E3DFD6;
  --c-green:#1E9A3A; --c-cyan:#1DB4D6;
  --radius:14px; --radius-s:8px;
  --shadow:0 18px 40px -22px rgba(18,20,23,.35);
  --container:1250px; --gap:clamp(20px,3vw,32px);
  --f-title:"Archivo",sans-serif; --f-body:"Hanken Grotesk",sans-serif;
  --ease:cubic-bezier(.22,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--f-body);font-size:1.0625rem;line-height:1.65;color:var(--g1);background:var(--base);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5{font-family:var(--f-title);color:var(--ink);line-height:1.1;margin:0;font-weight:800;letter-spacing:-.02em}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
.section{padding-block:clamp(70px,9vw,120px)}
.section--white{background:var(--white)}

/* Texto claro sobre fondos oscuros / imagen */
.hero,.page-hero,.cta,.section--dark{color:rgba(255,255,255,.82)}
.hero h1,.hero h2,.hero h3,.hero h4,
.page-hero h1,.page-hero h2,.page-hero h3,.page-hero h4,
.cta h1,.cta h2,.cta h3,.cta h4,
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}

.eyebrow{display:block;font-family:var(--f-title);font-size:.78rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-d);margin-bottom:7px}
.hero .eyebrow,.page-hero .eyebrow,.cta .eyebrow,.section--dark .eyebrow{color:var(--accent)}
.title{font-size:clamp(1.9rem,3.6vw,2.8rem);margin-top:8px}
.lead{font-size:1.15rem;max-width:62ch}
.head{max-width:720px;margin-bottom:clamp(36px,5vw,56px)}
.head--center{margin-inline:auto;text-align:center}
.head--center .lead{margin-inline:auto}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 24px;border-radius:999px;font-family:var(--f-title);font-weight:700;font-size:.95rem;border:2px solid transparent;cursor:pointer;transition:transform .25s var(--ease),background .25s,color .25s,border-color .25s}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--accent-d);color:#fff}
.btn--primary:hover{background:#D67308}
.btn--ghost{border-color:rgba(18,20,23,.25);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink)}
.hero .btn--ghost,.cta .btn--ghost,.section--dark .btn--ghost{border-color:rgba(255,255,255,.45);color:#fff}
.hero .btn--ghost:hover,.cta .btn--ghost:hover{border-color:#fff}
.btn svg{width:18px;height:18px;flex:none}

/* Header */
.site-header{position:fixed;inset:0 0 auto;z-index:90;background:#fff;box-shadow:0 6px 24px -16px rgba(0,0,0,.3);transition:padding .3s;padding-block:14px}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:46px;height:46px}
.brand__txt{display:flex;flex-direction:column;line-height:1.05}
.brand__txt strong{font-family:var(--f-title);font-weight:900;font-size:1.3rem;color:var(--ink);letter-spacing:.04em}
.brand__txt span{font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--g1)}
.site-footer .brand__txt strong{color:#fff}.site-footer .brand__txt span{color:rgba(255,255,255,.7)}
.site-footer .brand img{background:#fff;border-radius:8px;padding:4px}
.nav{display:flex;align-items:center;gap:34px}
.nav a{font-family:var(--f-title);font-weight:600;font-size:.95rem;color:var(--ink);position:relative;transition:color .2s}
.nav a:not(.btn)::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent);transform:scaleX(0);transition:transform .3s var(--ease)}
.nav a:not(.btn):hover::after,.nav a.is-active::after{transform:scaleX(1)}
.nav a.is-active{color:var(--ink)}
.nav .btn{color:#fff}
.nav .nav-cta-mobile{display:none}
.site-header.is-scrolled{padding-block:9px}
.burger{display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;color:var(--ink);padding:10px}
.burger span{display:block;height:2px;background:currentColor;margin:5px 0;transition:transform .3s,opacity .3s}
.nav-backdrop{position:fixed;inset:0;background:rgba(10,12,14,.55);z-index:70;opacity:0;visibility:hidden;transition:opacity .3s}
body.nav-open .nav-backdrop{opacity:1;visibility:visible}

/* Hero */
.hero{position:relative;isolation:isolate;min-height:min(100vh,860px);display:flex;align-items:flex-end;padding:150px 0 clamp(60px,8vw,100px);overflow:hidden;background:var(--ink)}
.hero__bg,.page-hero__bg,.cta__bg,.section__bg{position:absolute;inset:0;z-index:-2}
.hero__bg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:75% center;opacity:0;transition:opacity 1.2s ease}
.hero__bg img.is-active{opacity:1}
.hero__dots{position:absolute;left:50%;transform:translateX(-50%);bottom:22px;z-index:2;display:flex;gap:8px}
.hero__dots button{width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.5);background:rgba(0,0,0,.25);color:#fff;font-family:var(--f-title);font-weight:700;font-size:.85rem;cursor:pointer}
.hero__dots button.is-active{background:var(--accent-d);border-color:var(--accent-d)}
.page-hero__bg img,.cta__bg img,.section__bg img{width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(100deg,rgba(12,14,16,.72) 0%,rgba(12,14,16,.5) 50%,rgba(12,14,16,.12) 100%)}
.hero__inner{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:end}
.hero h1{font-size:clamp(2.4rem,5.4vw,4.3rem);margin-top:15px;max-width:15ch}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lead{margin-top:22px;color:rgba(255,255,255,.85)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__card{background:rgba(255,255,255,.08);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:26px}
.hero__card h3{font-size:1.05rem;margin-bottom:14px}
.hero__card ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.hero__card li{display:flex;align-items:center;gap:12px;font-size:.98rem}
.hero__card li span{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;background:rgba(252,176,7,.16);color:var(--accent);flex:none}
.hero__card svg{width:17px;height:17px}

/* Page hero */
.page-hero{position:relative;isolation:isolate;padding:170px 0 80px;overflow:hidden;background:var(--ink)}
.page-hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(12,14,16,.78),rgba(12,14,16,.72))}
.page-hero h1{font-size:clamp(2.2rem,4.6vw,3.6rem);margin-top:15px;max-width:18ch}
.page-hero .lead{margin-top:18px;color:rgba(255,255,255,.85)}

/* Franja de colores de la marca */
.brandbar{display:flex;height:6px}
.brandbar i{flex:1}
.brandbar i:nth-child(1){background:var(--ink)}.brandbar i:nth-child(2){background:var(--c-green)}
.brandbar i:nth-child(3){background:var(--accent)}.brandbar i:nth-child(4){background:var(--c-cyan)}

/* Intro / split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,80px);align-items:center}
.split__media{position:relative}
.split__media img{border-radius:var(--radius);aspect-ratio:4/5;object-fit:cover;width:100%;box-shadow:var(--shadow)}
.split__media .badge{position:absolute;left:-22px;bottom:30px;background:var(--ink);color:#fff;border-radius:var(--radius);padding:18px 22px;display:flex;gap:14px;align-items:center;box-shadow:var(--shadow);max-width:270px}
.badge strong{font-family:var(--f-title);color:var(--accent);font-size:1.9rem;line-height:1}
.badge span{font-size:.88rem;line-height:1.35}
.checks{list-style:none;padding:0;margin:24px 0 30px;display:grid;gap:12px}
.checks li{display:flex;gap:12px;align-items:flex-start;color:var(--ink);font-weight:500}
.checks svg{width:22px;height:22px;flex:none;color:var(--accent-d);margin-top:2px}

/* Tarjetas de servicio */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.svc{background:var(--white);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;border:1px solid var(--line);transition:transform .35s var(--ease),box-shadow .35s}
.svc:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.svc__img{aspect-ratio:16/10;overflow:hidden}
.svc__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.svc:hover .svc__img img{transform:scale(1.05)}
.svc__body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1}
.svc__num{font-family:var(--f-title);font-weight:800;color:var(--accent-d);font-size:.85rem;letter-spacing:.1em}
.svc h3{font-size:1.3rem;margin:6px 0 10px}
.svc p{font-size:.98rem;margin-bottom:18px}
.svc__link{margin-top:auto;font-family:var(--f-title);font-weight:700;color:var(--ink);display:inline-flex;gap:8px;align-items:center;font-size:.92rem}
.svc__link svg{width:16px;height:16px;transition:transform .3s}
.svc:hover .svc__link svg{transform:translateX(4px)}

/* Sección oscura con foto */
.section--dark{position:relative;isolation:isolate;background:var(--ink);overflow:hidden}
.section--dark::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(12,14,16,.78) 0%,rgba(12,14,16,.72) 100%)}
.section--plano::after{display:none}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.feature{border-top:2px solid var(--accent);padding-top:22px}
.feature .ico{width:48px;height:48px;border-radius:12px;background:rgba(252,176,7,.14);color:var(--accent);display:grid;place-items:center;margin-bottom:18px}
.feature .ico svg{width:24px;height:24px}
.feature h3{font-size:1.15rem;margin-bottom:8px}
.feature p{font-size:.97rem;margin:0}

/* Galería */
.gallery-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.gallery-filters button{font-family:var(--f-title);font-weight:600;font-size:.9rem;padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:var(--white);color:var(--ink);cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.gallery-filters button.is-active,.gallery-filters button:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.gallery{columns:4 240px;column-gap:16px}
.gallery figure{margin:0 0 16px;break-inside:avoid;border-radius:var(--radius-s);overflow:hidden;position:relative;cursor:zoom-in;background:var(--line)}
.gallery figure img{width:100%;transition:transform .5s var(--ease)}
.gallery figure:hover img{transform:scale(1.04)}
.gallery figcaption{position:absolute;left:10px;bottom:10px;background:rgba(18,20,23,.82);color:#fff;font-size:.78rem;font-weight:600;padding:5px 11px;border-radius:999px}
.gallery figure.is-hidden{display:none}
.preview{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.preview img{border-radius:var(--radius-s);aspect-ratio:3/4;object-fit:cover;width:100%}
.preview a:nth-child(2) img,.preview a:nth-child(3) img{aspect-ratio:3/4}
.center{text-align:center;margin-top:40px}
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(8,9,11,.93);display:none;align-items:center;justify-content:center;padding:30px}
.lightbox.is-open{display:flex}
.lightbox img{max-height:88vh;max-width:92vw;width:auto;border-radius:6px}
.lightbox button{position:absolute;background:rgba(255,255,255,.1);border:0;color:#fff;width:48px;height:48px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.lightbox button svg{width:22px;height:22px}
.lb-close{top:20px;right:20px}.lb-prev{left:20px;top:50%}.lb-next{right:20px;top:50%}

/* Servicio detallado */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,80px);align-items:center;padding-block:clamp(50px,6vw,80px);border-bottom:1px solid var(--line)}
.detail:last-child{border-bottom:0}
.detail:nth-child(even) .detail__media{order:2}
.detail__media{display:grid;grid-template-columns:1.4fr 1fr;gap:14px}
.detail__media img{border-radius:var(--radius);width:100%;height:100%;object-fit:cover;aspect-ratio:3/4}
.detail__media img:last-child{aspect-ratio:auto}
.detail h2{font-size:clamp(1.7rem,3vw,2.3rem);margin:8px 0 16px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tags li{list-style:none;font-size:.88rem;font-weight:600;color:var(--ink);background:var(--white);border:1px solid var(--line);padding:7px 14px;border-radius:999px}
.tags{padding:0}

/* Pasos */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);counter-reset:s}
.step{counter-increment:s;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px}
.step::before{content:"0" counter(s);font-family:var(--f-title);font-weight:900;font-size:2.2rem;color:var(--accent);display:block;margin-bottom:14px;line-height:1}
.step h3{font-size:1.12rem;margin-bottom:8px}
.step p{font-size:.95rem;margin:0}

/* CTA */
.cta{position:relative;isolation:isolate;padding-block:clamp(80px,10vw,130px);overflow:hidden;background:var(--ink);text-align:center}
.cta::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(12,14,16,.76),rgba(12,14,16,.74))}
.cta h2{font-size:clamp(2rem,4vw,3.1rem);max-width:20ch;margin:10px auto 16px}
.cta p{max-width:56ch;margin-inline:auto}
.cta .hero__actions{justify-content:center}

/* Contacto */
.contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(36px,5vw,64px);align-items:start}
.info-list{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:14px}
.info-list li{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.info-list small{display:block;font-family:var(--f-title);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.72rem;color:var(--g2);margin-bottom:4px}
.ci{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:600}
.ci svg{width:19px;height:19px;flex:none;color:var(--accent-d)}
a.ci:hover{color:var(--accent-d)}
.form{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(24px,4vw,40px);box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field--full{grid-column:1/-1}
.field label{font-family:var(--f-title);font-weight:600;font-size:.88rem;color:var(--ink)}
.field input,.field textarea{font:inherit;font-size:1rem;padding:13px 15px;border:1px solid var(--line);border-radius:var(--radius-s);background:var(--base);color:var(--ink);transition:border-color .2s,background .2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent-d);background:#fff}
.field textarea{min-height:150px;resize:vertical}
.form .btn{margin-top:22px}
.form-alert{display:none;padding:14px 18px;border-radius:var(--radius-s);margin-bottom:20px;font-weight:600}
.form-alert.is-ok{display:block;background:#E5F5E9;color:#17652B}
.form-alert.is-err{display:block;background:#FBE7E5;color:#9B2318}
.map{margin-top:clamp(50px,6vw,80px);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);height:380px}
.map iframe{width:100%;height:100%;border:0;display:block}

/* Footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.66);padding-block:clamp(52px,6vw,74px) 30px;font-size:.96rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;gap:40px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:18px}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.site-footer a:hover{color:#fff}
.site-footer .brand{margin-bottom:18px}
.site-footer .ci{color:rgba(255,255,255,.78);font-weight:500}
.site-footer .ci svg{color:var(--accent)}
.footer-credit{margin-top:40px;padding-top:22px;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:inherit;text-decoration:none;transition:color .22s var(--ease)}
.footer-credit a:hover{color:rgba(255,255,255,.92)}

/* WhatsApp flotante */
.wa{position:fixed;right:20px;bottom:20px;z-index:60;width:56px;height:56px;border-radius:50%;background:#25D366;color:#fff;display:grid;place-items:center;box-shadow:0 10px 24px -8px rgba(0,0,0,.4);transition:transform .25s}
.wa:hover{transform:scale(1.07)}
.wa svg{width:28px;height:28px}

/* Reveal */
.js .reveal{animation:reveal-failsafe 0s linear 3s forwards}
@keyframes reveal-failsafe{to{opacity:1;transform:none}}
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}*{scroll-behavior:auto!important}}

/* Responsive */
@media (max-width:1024px){
  .hero__inner{grid-template-columns:1fr}
  .hero__card{max-width:460px}
  .features,.steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .svc,  .svc:nth-child(5){grid-column:2/span 4}
}
@media (max-width:880px){
  .burger{display:block}
  .nav{position:fixed;top:0;right:0;height:100vh;width:min(320px,84vw);background:var(--ink);flex-direction:column;align-items:flex-start;gap:6px;padding:96px 28px 30px;transform:translateX(100%);transition:transform .4s var(--ease)}
  .nav a,.site-header.is-scrolled .nav a:not(.btn){color:#fff;font-size:1.1rem;padding:10px 0;width:100%}
  .nav a:not(.btn)::after{display:none}
  .nav a.is-active{color:var(--accent)!important}
  .nav .nav-cta{display:none}
  .nav .nav-cta-mobile{display:inline-flex;margin-top:18px;width:auto}
  body.nav-open .nav{transform:none}
  body.nav-open .burger{color:#fff;position:relative;z-index:2}
  body.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  body.nav-open .burger span:nth-child(2){opacity:0}
  body.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .split,.detail,.contact{grid-template-columns:1fr}
  .detail:nth-child(even) .detail__media{order:0}
  .split__media .badge{left:14px}
  .preview{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  body{font-size:1rem}
  .features,.steps,.footer-grid,.form-grid{grid-template-columns:1fr}
  .services{grid-template-columns:1fr}
  .hero{padding-top:120px}
  .page-hero{padding:140px 0 60px}
  .brand__txt span{display:none}
  .btn{padding:12px 20px}
}

/* Menú centrado en escritorio */
@media (min-width:881px){
  .site-header .container{display:grid;grid-template-columns:1fr auto 1fr}
  .header-cta{justify-self:end;color:#fff}
}
@media (max-width:880px){.header-cta{display:none}}

.svc--all{position:relative;isolation:isolate;overflow:hidden;background:var(--ink);border-color:var(--ink);padding:36px 32px;justify-content:center;align-items:flex-start;color:rgba(255,255,255,.8)}
.svc--all::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(120% 90% at 100% 0%,rgba(252,176,7,.28),transparent 60%)}
.svc--all .eyebrow{color:var(--accent)}
.svc--all h3{color:#fff;font-size:1.7rem;margin:4px 0 12px}
.svc--all p{font-size:.98rem;margin-bottom:24px}