/* ============================================================
   Punto Zero Solar — hoja de estilo principal
   Paleta de marca: naranjo #e59422 · carbón #32373c · verde #51c11d
   Tipografías: Roboto (cuerpo) + Roboto Slab (títulos)
   ============================================================ */

:root{
  --pz-orange:#e59422;
  --pz-orange-dark:#c87a12;
  --pz-charcoal:#32373c;
  --pz-charcoal-light:#4a5157;
  --pz-green:#51c11d;
  --pz-gray:#6d7278;
  --pz-light:#f6f7f9;
  --pz-border:#e7e9ee;
  --pz-white:#ffffff;
  --pz-shadow:0 10px 30px rgba(50,55,60,.08);
  --pz-shadow-lg:0 20px 50px rgba(50,55,60,.14);
  --pz-radius:14px;
  --pz-max:1180px;
  --pz-font:"Roboto",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  --pz-font-head:"Roboto Slab",Georgia,"Times New Roman",serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--pz-font);
  color:var(--pz-charcoal);
  line-height:1.65;
  font-size:17px;
  background:var(--pz-white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--pz-font-head);color:var(--pz-charcoal);line-height:1.2;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.5vw,3.1rem);font-weight:700}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:700}
h3{font-size:1.3rem;font-weight:600}
p{margin:0 0 1rem}
a{color:var(--pz-orange);text-decoration:none;transition:color .2s}
a:hover{color:var(--pz-orange-dark)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--pz-max);margin:0 auto;padding:0 20px}
.text-center{text-align:center}
.muted{color:var(--pz-gray)}

/* ---- Botones ---- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  background:var(--pz-orange);color:#fff;font-weight:600;
  padding:.8rem 1.6rem;border-radius:50px;border:none;cursor:pointer;
  font-size:1rem;transition:transform .2s,box-shadow .2s,background .2s;
  box-shadow:0 8px 20px rgba(229,148,34,.3);
}
.btn:hover{background:var(--pz-orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(229,148,34,.4)}
.btn-outline{background:transparent;color:var(--pz-charcoal);border:2px solid var(--pz-border);box-shadow:none}
.btn-outline:hover{background:var(--pz-charcoal);color:#fff;border-color:var(--pz-charcoal);transform:translateY(-2px)}
.btn-green{background:var(--pz-green);box-shadow:0 8px 20px rgba(81,193,29,.3)}
.btn-green:hover{background:#44a316}

/* ---- Top bar ---- */
.topbar{background:var(--pz-charcoal);color:#cfd3d8;font-size:.9rem}
.topbar .container{display:flex;flex-wrap:wrap;gap:1.2rem;justify-content:space-between;align-items:center;padding-top:.5rem;padding-bottom:.5rem}
.topbar a{color:#cfd3d8}
.topbar a:hover{color:var(--pz-orange)}
.topbar .tb-info{display:flex;flex-wrap:wrap;gap:1.2rem;align-items:center}
.topbar .tb-social{display:flex;gap:.9rem;align-items:center}

/* ---- Header / nav ---- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 14px rgba(50,55,60,.07)}
.navbar{display:flex;align-items:center;justify-content:space-between;padding-top:.6rem;padding-bottom:.6rem}
.navbar .logo img{height:46px}
.nav-links{display:flex;gap:1.5rem;align-items:center;list-style:none;margin:0;padding:0}
.nav-links a{color:var(--pz-charcoal);font-weight:500;position:relative;padding:.3rem 0}
.nav-links a:hover,.nav-links a.active{color:var(--pz-orange)}
.nav-links a.active::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:var(--pz-orange)}
.nav-cta{margin-left:.5rem}
.nav-toggle{display:none;background:none;border:none;font-size:1.8rem;color:var(--pz-charcoal);cursor:pointer}
.has-sub{position:relative}
.submenu{position:absolute;top:100%;left:0;background:#fff;box-shadow:var(--pz-shadow);border-radius:10px;padding:.5rem 0;min-width:260px;list-style:none;margin:.4rem 0 0;opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s}
.has-sub:hover .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu li a{display:block;padding:.55rem 1.1rem;font-weight:500}
.submenu li a:hover{background:var(--pz-light);color:var(--pz-orange)}

/* ---- Hero ---- */
.hero{
  position:relative;color:#fff;
  background:linear-gradient(rgba(27,30,33,.72),rgba(27,30,33,.72)),url("../img/hero-solar.jpg") center/cover no-repeat;
  padding:6.5rem 0;
}
.hero h1{color:#fff;max-width:760px}
.hero p{font-size:1.2rem;max-width:620px;color:#eceef0;margin-bottom:1.8rem}
.hero .eyebrow{color:var(--pz-orange);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.85rem;margin-bottom:1rem;display:block}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap}

/* ---- Secciones ---- */
.section{padding:5rem 0}
.section.alt{background:var(--pz-light)}
.section-head{max-width:720px;margin:0 auto 3rem;text-align:center}
.section-head .eyebrow{color:var(--pz-orange);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.82rem;display:block;margin-bottom:.6rem}
.section-head p{color:var(--pz-gray)}

/* ---- Grid utilidades ---- */
.grid{display:grid;gap:1.6rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}

/* ---- Cards de servicio ---- */
.card{background:#fff;border:1px solid var(--pz-border);border-radius:var(--pz-radius);padding:2rem;transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--pz-shadow-lg);border-color:transparent}
.card .icon{width:62px;height:62px;border-radius:14px;background:rgba(229,148,34,.12);display:flex;align-items:center;justify-content:center;margin-bottom:1.2rem;color:var(--pz-orange);font-size:1.7rem}
.card h3{margin-bottom:.5rem}
.card p{color:var(--pz-gray);font-size:.98rem;margin-bottom:1rem}
.card .more{font-weight:600;font-size:.95rem}

/* ---- Feature / por qué nosotros ---- */
.feature{display:flex;gap:1rem;align-items:flex-start}
.feature .fi{flex:0 0 auto;width:52px;height:52px;border-radius:12px;background:rgba(81,193,29,.12);color:var(--pz-green);display:flex;align-items:center;justify-content:center;font-size:1.4rem}
.feature h3{font-size:1.12rem;margin-bottom:.25rem}
.feature p{font-size:.95rem;color:var(--pz-gray);margin:0}

/* ---- Stats ---- */
.stats{background:var(--pz-charcoal);color:#fff}
.stats .grid-4{gap:1rem}
.stat{text-align:center;padding:1rem}
.stat .num{font-family:var(--pz-font-head);font-size:2.6rem;font-weight:700;color:var(--pz-orange);line-height:1}
.stat .lbl{color:#c7cbd0;font-size:.95rem;margin-top:.4rem}

/* ---- Galería / proyectos ---- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.gallery figure{margin:0;border-radius:var(--pz-radius);overflow:hidden;position:relative;aspect-ratio:4/3}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.gallery figure:hover img{transform:scale(1.07)}
.gallery figcaption{position:absolute;inset:auto 0 0 0;background:linear-gradient(transparent,rgba(27,30,33,.85));color:#fff;padding:1.4rem 1rem .9rem;font-weight:600;font-size:.95rem}

/* ---- CTA band ---- */
.cta-band{background:linear-gradient(120deg,var(--pz-orange),#f0a93d);color:#fff;text-align:center;padding:3.5rem 0}
.cta-band h2{color:#fff}
.cta-band p{color:#fff3e2;max-width:600px;margin:0 auto 1.6rem}
.cta-band .btn{background:#fff;color:var(--pz-charcoal);box-shadow:0 10px 24px rgba(0,0,0,.14)}
.cta-band .btn:hover{background:var(--pz-charcoal);color:#fff}

/* ---- Blog ---- */
.post-card{background:#fff;border:1px solid var(--pz-border);border-radius:var(--pz-radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.post-card:hover{transform:translateY(-5px);box-shadow:var(--pz-shadow-lg)}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover}
.post-card .body{padding:1.5rem;display:flex;flex-direction:column;flex:1}
.post-card .meta{font-size:.82rem;color:var(--pz-gray);margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.05em}
.post-card h3{font-size:1.2rem;margin-bottom:.5rem}
.post-card p{font-size:.95rem;color:var(--pz-gray);flex:1}
.badge{display:inline-block;background:rgba(229,148,34,.12);color:var(--pz-orange-dark);font-size:.75rem;font-weight:700;padding:.25rem .7rem;border-radius:50px;text-transform:uppercase;letter-spacing:.05em}

/* ---- Article ---- */
.article{max-width:780px;margin:0 auto}
.article .meta{color:var(--pz-gray);font-size:.95rem;margin-bottom:1.5rem}
.article h2{margin-top:2rem}
.article h3{margin-top:1.6rem}
.article img{border-radius:var(--pz-radius);margin:1.5rem 0}
.article ul,.article ol{padding-left:1.3rem}
.article li{margin-bottom:.5rem}
.article blockquote{border-left:4px solid var(--pz-orange);background:var(--pz-light);margin:1.5rem 0;padding:1rem 1.4rem;border-radius:0 10px 10px 0;font-style:italic;color:var(--pz-charcoal-light)}

/* ---- Page banner ---- */
.page-banner{background:linear-gradient(rgba(27,30,33,.8),rgba(27,30,33,.8)),url("../img/hero-solar.jpg") center/cover;color:#fff;padding:4rem 0;text-align:center}
.page-banner h1{color:#fff;margin-bottom:.4rem}
.breadcrumb{font-size:.9rem;color:#d7dadd}
.breadcrumb a{color:var(--pz-orange)}

/* ---- Contacto ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:2.5rem}
.contact-info .item{display:flex;gap:1rem;margin-bottom:1.4rem;align-items:flex-start}
.contact-info .ci-ic{flex:0 0 auto;width:48px;height:48px;border-radius:12px;background:rgba(229,148,34,.12);color:var(--pz-orange);display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
label{font-weight:600;font-size:.9rem;display:block;margin-bottom:.35rem}
input,select,textarea{width:100%;padding:.75rem .9rem;border:1px solid var(--pz-border);border-radius:10px;font-family:inherit;font-size:1rem;background:#fff;color:var(--pz-charcoal)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--pz-orange);box-shadow:0 0 0 3px rgba(229,148,34,.15)}
.full{grid-column:1/-1}

/* ---- Footer ---- */
.site-footer{background:var(--pz-charcoal);color:#b9bec4;padding:4rem 0 1.5rem;font-size:.95rem}
.site-footer h4{color:#fff;font-family:var(--pz-font);font-size:1.05rem;margin-bottom:1.1rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2rem}
.site-footer a{color:#b9bec4}
.site-footer a:hover{color:var(--pz-orange)}
.footer-logo img{height:42px;margin-bottom:1rem}
.footer-list{list-style:none;padding:0;margin:0}
.footer-list li{margin-bottom:.6rem}
.footer-social{display:flex;gap:.8rem;margin-top:1rem}
.footer-social a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;color:#fff}
.footer-social a:hover{background:var(--pz-orange)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:2.5rem;padding-top:1.3rem;display:flex;flex-wrap:wrap;gap:.6rem;justify-content:space-between;color:#8c9298;font-size:.88rem}

/* ---- WhatsApp flotante ---- */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;width:58px;height:58px;border-radius:50%;background:#25d366;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.8rem;box-shadow:0 8px 24px rgba(37,211,102,.45);transition:transform .2s}
.wa-float:hover{transform:scale(1.08);color:#fff}

/* ---- Iconos SVG inline ---- */
.ic{width:1em;height:1em;fill:currentColor;vertical-align:-.12em}

/* ---- Responsive ---- */
@media(max-width:960px){
  .split,.contact-grid{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .nav-toggle{display:block}
  .nav-links{position:fixed;inset:0 0 0 auto;width:min(80vw,320px);flex-direction:column;align-items:flex-start;background:#fff;padding:5rem 1.6rem 2rem;box-shadow:-10px 0 40px rgba(0,0,0,.15);transform:translateX(100%);transition:transform .3s;gap:.4rem;overflow-y:auto}
  .nav-links.open{transform:translateX(0)}
  .nav-links a{padding:.7rem 0;width:100%;border-bottom:1px solid var(--pz-border)}
  .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;padding:.2rem 0 .2rem 1rem;min-width:0}
  .has-sub:hover .submenu{transform:none}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .topbar .tb-info{font-size:.82rem;gap:.8rem}
  .section{padding:3.2rem 0}
  .hero{padding:4.5rem 0}
}
.nav-backdrop{display:none}
.nav-backdrop.open{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:40}