:root{
  --nav:#07263a;
  --accent:#08b389;
  --muted:#9fb3bb;
  --text-dark:#07263a;
  --light:#f7f9fb;
  --container:1200px;
  font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, Arial;
}

/* reset básico */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text-dark);
  background: linear-gradient(180deg,#f7f9fb 0%, #eef6f8 100%);
  -webkit-font-smoothing:antialiased;
  font-size:16px;
  line-height:1.5;
}

/* container */
.container{width:92%; max-width:var(--container); margin:0 auto;padding:24px 0}

/* header */
.site-header{
  background:linear-gradient(180deg,#07263a, #0b3350);
  color:#fff; position:sticky; top:0; z-index:140;
  box-shadow:0 8px 20px rgba(2,10,20,0.12);
  transition:padding .25s ease, box-shadow .25s ease;
  padding:16px 0;
}
.site-header.scrolled{padding:8px 0; box-shadow:0 10px 28px rgba(2,10,20,0.18)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:6px 0}
.branding{display:flex;gap:12px;align-items:center}
.logo-img{height:46px;transition:height .25s}
.site-header.scrolled .logo-img{height:36px}
.brand-text h1{font-size:18px;margin:0;font-weight:800;color:#fff}
.brand-text small{display:block;color:rgba(255,255,255,0.75);font-size:12px}
.main-nav a{color:rgba(255,255,255,0.95);text-decoration:none;margin:0 14px;font-weight:600;transition:color .2s}
.main-nav a:hover{color:var(--accent)}
.header-actions .phone-btn{background:var(--accent);color:#042a24;padding:10px 14px;border-radius:10px;text-decoration:none;font-weight:700;display:inline-flex;gap:8px;align-items:center}

/* HERO */
.hero{position:relative;padding:80px 0;background-size:cover;background-position:center;overflow:hidden;border-bottom-left-radius:18px;border-bottom-right-radius:18px}
.hero-overlay{position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg, rgba(8,179,137,0.04), rgba(6,42,60,0.18)); mix-blend-mode:screen; animation:slow-pan 14s linear infinite}
@keyframes slow-pan{0%{transform:translateX(-8%)}50%{transform:translateX(8%)}100%{transform:translateX(-8%)}}
.hero-grid{display:grid;grid-template-columns:1fr 420px;gap:30px;align-items:center;position:relative;z-index:2}
.hero-text h2{font-size:44px;margin:0 0 12px;line-height:1.02;font-weight:800;color:#fff}
.hero-text p{max-width:720px;color:rgba(255,255,255,0.9)}
.hero-actions{margin-top:18px;display:flex;gap:12px}
.btn{display:inline-block;padding:12px 18px;border-radius:10px;text-decoration:none;font-weight:700;border:none;cursor:pointer}
.btn-primary{background:var(--accent);color:#042a24;box-shadow:0 8px 20px rgba(3,15,15,0.12);transition:transform .22s}
.btn-primary:hover{transform:translateY(-4px)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.14);padding:10px 16px;border-radius:10px}

/* floating card */
.floating-card{background:rgba(255,255,255,0.06);backdrop-filter:blur(4px);padding:20px;border-radius:12px;color:#e6f6f5;box-shadow:0 18px 40px rgba(2,10,16,0.25);animation:float 6s ease-in-out infinite}
@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-8px)}100%{transform:translateY(0)}}

/* sections */
.section{padding:60px 0}
.section.alt{background:#fff}
.section .section-title{font-size:28px;margin-bottom:14px;color:var(--nav)}
.lead{color:rgba(0,0,0,0.65);font-size:15px;max-width:900px}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 420px;gap:24px;align-items:center}
.about-image img{width:100%;border-radius:10px;display:block}

/* services */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.service-card{background:#f9fbfc;color:var(--text-dark);padding:14px;border-radius:10px;box-shadow:0 8px 26px rgba(7,18,21,0.04);text-align:center;transition:transform .25s, box-shadow .25s}
.service-card:hover{transform:translateY(-8px);box-shadow:0 18px 36px rgba(2,10,20,0.08)}
.service-card img{width:100%;height:140px;object-fit:cover;border-radius:8px;margin-bottom:12px}

/* clients carousel (no CSS animation — lo hace JS ahora) */
.clients-carousel-wrapper{overflow:hidden;padding:18px 0;position:relative}
.clients-carousel{display:flex;gap:28px;align-items:center;will-change:transform;transform:translate3d(0,0,0)}
.client{flex:0 0 auto;display:flex;align-items:center;justify-content:center;width:160px;height:80px}
.client img{max-width:140px;max-height:70px;filter:grayscale(100%) contrast(.9) opacity(.9);transition:all .28s}
.client img:hover{filter:none;transform:scale(1.06);opacity:1}

/* portfolio */
.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.portfolio-item{position:relative;overflow:hidden;border-radius:10px;cursor:pointer}
.portfolio-item img{width:100%;height:180px;object-fit:cover;border-radius:8px;transition:transform .45s;display:block}
.portfolio-item:hover img{transform:scale(1.06)}

/* contact */
.contact-grid{display:grid;grid-template-columns:420px 1fr;gap:26px;align-items:start}
.contact-form form{display:flex;flex-direction:column;gap:10px;background:#fff;padding:18px;border-radius:10px}
.contact-form input,.contact-form textarea{padding:10px;border:1px solid #e0e6ea;border-radius:8px}

/* footer */
.site-footer{background:#07263a;color:#cfe6e1;padding:36px 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.footer-logo{height:44px}

/* WhatsApp floating */
.whatsapp-float{
  position:fixed;right:18px;bottom:18px;background:linear-gradient(180deg,#06b35d,#04a552);color:#fff;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;z-index:160;box-shadow:0 12px 30px rgba(4,80,45,0.2);
}
.whatsapp-float:hover{transform:translateY(-6px)}

/* Back to top button */
#backToTop{
  position:fixed;right:18px;bottom:88px;width:48px;height:48px;border-radius:8px;background:#07263a;color:#fff;display:flex;align-items:center;justify-content:center;z-index:150;cursor:pointer;box-shadow:0 10px 30px rgba(2,10,20,0.2);opacity:0;transform:translateY(10px);transition:all .28s;
}
#backToTop.show{opacity:1;transform:translateY(0)}

/* fade-in helper */
.fade-in{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* lightbox modal */
#lightboxModal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(2,8,12,0.72);z-index:250;padding:24px}
#lightboxModal .lb-inner{max-width:1100px;width:100%;max-height:90vh;display:flex;align-items:center;justify-content:center}
#lightboxModal img{max-width:100%;max-height:90vh;border-radius:8px;display:block}

/* responsive */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr; padding-top:36px;padding-bottom:36px}
  .about-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .hero-text h2{font-size:34px}
  .client{width:140px;height:70px}
}

/* accessibility focus */
a:focus, button:focus, input:focus {outline:3px solid rgba(8,179,137,0.18);outline-offset:3px}