:root{
  --navy:#0e1a2b;
  --navy-light:#152640;
  --teal:#4ecdc4;
  --teal-dark:#2fa39a;
  --gold:#f2c230;
  --cream:#f5f2e9;
  --ink:#1b1f27;
  --gray:#5c6470;
  --border:#e7e5df;
  --bg:#ffffff;
  --bg-alt:#f7f8fa;
  --radius:14px;
  --shadow:0 10px 30px rgba(14,26,43,.10);
  --ff-head:'Montserrat', sans-serif;
  --ff-body:'Montserrat', sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--ff-body);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}
h1,h2,h3{font-family:var(--ff-head);font-weight:800;line-height:1.15;color:var(--navy);}
h2{font-size:clamp(1.8rem,3.2vw,2.6rem);}
h3{font-size:1.2rem;margin-bottom:.5rem;}

.eyebrow{
  font-family:var(--ff-body);
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  font-size:.78rem;
  color:var(--teal-dark);
  margin-bottom:.6rem;
}
.center{text-align:center;margin-left:auto;margin-right:auto;}
.section__lead.center{max-width:620px;}

.section{padding:88px 0;}
.section--alt{background:var(--bg-alt);}
.section__lead{color:var(--gray);margin-top:.6rem;margin-bottom:2.6rem;font-size:1.05rem;}

/* BUTTONS */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  border-radius:50px;
  font-weight:700;
  font-size:.95rem;
  border:2px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex-shrink:0;}
.btn:hover{transform:translateY(-2px);}
.btn--primary{background:var(--teal);color:var(--navy);box-shadow:0 8px 20px rgba(78,205,196,.35);}
.btn--primary:hover{background:var(--teal-dark);color:#fff;}
.btn--outline{border-color:rgba(255,255,255,.5);color:#fff;}
.btn--outline:hover{background:rgba(255,255,255,.12);}
.btn--whatsapp{background:#25D366;color:#fff;padding:11px 20px;font-size:.88rem;}
.btn--whatsapp:hover{background:#1fb455;}
.btn--block{width:100%;}

/* HEADER */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(14,26,43,.72);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .3s ease;
}
.header__inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;
}
.header__logo img{height:42px;}
.nav{display:flex;gap:30px;}
.nav a{color:#fff;font-weight:600;font-size:.95rem;opacity:.88;transition:opacity .15s;}
.nav a:hover{opacity:1;color:var(--teal);}
.header__cta{flex-shrink:0;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:38px;height:38px;background:none;border:none;cursor:pointer;
  position:relative;z-index:210;
}
.nav-toggle span{
  width:100%;height:2px;background:#fff;border-radius:2px;
  transition:transform .25s ease, opacity .25s ease;
}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.nav-backdrop{
  display:none;
  position:fixed;inset:0;
  background:rgba(14,26,43,.6);
  z-index:190;
}
.nav-backdrop.active{display:block;}

/* HERO */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;align-items:center;
  overflow:hidden;
  background:var(--navy);
}
.hero__bg{
  position:absolute;inset:0;
  background:url('../assets/img/hero/capa-principal.png') center 30%/cover no-repeat;
  filter:saturate(1.05) brightness(.8);
  transform:scale(1.05);
}
.hero__overlay{
  position:absolute;inset:0;
  background:
    linear-gradient(115deg, rgba(14,26,43,.8) 0%, rgba(14,26,43,.6) 45%, rgba(14,26,43,.35) 100%);
}
.hero__content{position:relative;z-index:2;color:#fff;padding-top:110px;padding-bottom:60px;}
.hero__content .eyebrow{color:var(--teal);}
.hero h1{
  color:#fff;
  font-size:clamp(2.3rem,5vw,3.6rem);
  max-width:780px;
  margin-bottom:1.2rem;
}
.hero h1 span{color:var(--teal);}
.hero__lead{
  max-width:560px;
  font-size:1.1rem;
  color:rgba(255,255,255,.85);
  margin-bottom:2.2rem;
}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:3.5rem;}
.hero__stats{display:flex;gap:48px;flex-wrap:wrap;}
.hero__stats strong{display:block;font-family:var(--ff-head);font-size:clamp(3rem,5.2vw,3.8rem);color:var(--teal);}
.hero__stats span{font-size:.85rem;color:rgba(255,255,255,.7);}
.hero__stats .stat__num{font-size:inherit;color:inherit;}
.hero__stats .stat{min-width:120px;}
.stat__bar{
  margin-top:12px;
  width:100%;
  max-width:150px;
  height:5px;
  border-radius:3px;
  background:rgba(255,255,255,.15);
  overflow:hidden;
}
.stat__bar-fill{
  height:100%;
  width:0%;
  border-radius:3px;
  background:linear-gradient(90deg, var(--teal-dark), var(--teal));
  transition:width 1.8s cubic-bezier(.16,.8,.3,1);
}

/* ABOUT */
.about{
  display:grid;
  grid-template-columns:1fr 1.1fr;
  gap:60px;
  align-items:center;
}
.about__img{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.about__img img{height:100%;object-fit:cover;}
.about__badge{
  position:absolute;left:20px;bottom:20px;
  background:rgba(14,26,43,.85);
  backdrop-filter:blur(6px);
  color:#fff;padding:12px 18px;border-radius:10px;
  display:flex;flex-direction:column;gap:2px;
}
.about__badge strong{font-size:.9rem;}
.about__badge span{font-size:.78rem;color:var(--teal);}
.about__text h2{margin-bottom:1.1rem;}
.about__text p{color:var(--gray);margin-bottom:1.4rem;}
.about__list{margin-bottom:1.8rem;}
.about__list li{
  position:relative;padding-left:30px;margin-bottom:.7rem;color:var(--ink);font-weight:500;
}
.about__list li::before{
  content:"";position:absolute;left:0;top:5px;width:18px;height:18px;
  background:var(--teal);border-radius:50%;
}
.about__list li::after{
  content:"";position:absolute;left:6px;top:8px;width:6px;height:10px;
  border-right:2px solid var(--navy);border-bottom:2px solid var(--navy);
  transform:rotate(45deg);
}

/* CARDS / SERVIÇOS */
.cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  margin-top:2rem;
}
.card{
  display:block;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:transform .2s ease, box-shadow .2s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.card__icon{
  width:52px;height:52px;border-radius:12px;
  background:linear-gradient(135deg, var(--teal), var(--teal-dark));
  display:flex;align-items:center;justify-content:center;
  color:#fff;margin-bottom:1.1rem;
}
.card__icon svg{width:26px;height:26px;}
.card p{color:var(--gray);font-size:.95rem;}

/* STEEL FRAME */
.steelframe{
  position:relative;
  overflow:hidden;
  padding:100px 0;
  background:var(--navy);
  color:#fff;
}
.steelframe__bg{
  position:absolute;inset:0;
  background:url('../assets/img/steelframe/fundo-estrutura-01.png') center 30%/cover no-repeat;
  filter:brightness(.7);
  transform:scale(1.06);
}
.steelframe__overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(14,26,43,.82) 0%, rgba(14,26,43,.65) 55%, rgba(14,26,43,.42) 100%);
}
.steelframe__content{position:relative;z-index:2;}
.steelframe__eyebrow{color:var(--teal);}
.steelframe h2{color:#fff;max-width:640px;margin-bottom:1.2rem;}
.steelframe__lead{max-width:680px;color:rgba(255,255,255,.82);font-size:1.05rem;}
.steelframe__top{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
  margin-bottom:3.5rem;
}
.steelframe__photo{
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:0 20px 50px rgba(0,0,0,.35);
  border:1px solid rgba(255,255,255,.12);
}
.steelframe__photo img{width:100%;height:280px;object-fit:cover;display:block;}
.steelframe__photo figcaption{
  padding:12px 16px;
  background:rgba(255,255,255,.06);
  color:rgba(255,255,255,.75);
  font-size:.8rem;
}
.steelframe__grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-bottom:3rem;
}
.steelframe__feature{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  padding:26px 22px;
}
.steelframe__num{
  display:block;
  font-family:var(--ff-head);
  font-size:1.6rem;
  color:var(--teal);
  margin-bottom:.6rem;
}
.steelframe__feature h3{color:#fff;font-size:1.05rem;}
.steelframe__feature p{color:rgba(255,255,255,.72);font-size:.9rem;}
.steelframe__cta{display:flex;gap:16px;flex-wrap:wrap;}

.steelframe__norms{margin-top:1.8rem;}
.steelframe__norms-label{
  display:block;
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.04em;
  color:rgba(255,255,255,.55);
  margin-bottom:10px;
}
.steelframe__norms-tags{display:flex;flex-wrap:wrap;gap:10px;}
.steelframe__norms-tags span{
  border:1px solid rgba(255,255,255,.25);
  border-radius:50px;
  padding:6px 14px;
  font-size:.8rem;
  color:rgba(255,255,255,.85);
}

.steelframe__featured{
  margin-bottom:3.5rem;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:0 25px 60px rgba(0,0,0,.4);
  border:1px solid rgba(255,255,255,.12);
}
.steelframe__featured img{width:100%;max-height:480px;object-fit:cover;display:block;}
.steelframe__featured figcaption{
  padding:14px 20px;
  background:rgba(255,255,255,.06);
  color:rgba(255,255,255,.8);
  font-size:.85rem;
  text-align:center;
}

.steelframe__anatomy{margin-bottom:3.5rem;}
.steelframe__anatomy-title{
  color:#fff;
  font-size:1.3rem;
  margin-bottom:1.6rem;
  text-align:center;
}
.steelframe__anatomy-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.steelframe__anatomy-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  overflow:hidden;
}
.steelframe__anatomy-card img{width:100%;height:150px;object-fit:cover;display:block;}
.steelframe__anatomy-card figcaption{padding:16px;}
.steelframe__anatomy-card strong{display:block;color:#fff;font-size:.95rem;margin-bottom:6px;}
.steelframe__anatomy-card p{color:rgba(255,255,255,.68);font-size:.82rem;line-height:1.5;}

/* PROCESSO */
.process{padding:10px 0 20px;}
.process__track{
  display:flex;gap:20px;overflow-x:auto;
  padding:10px 24px 30px;
  scroll-snap-type:x proximity;
}
.process__track::-webkit-scrollbar{height:8px;}
.process__track::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px;}
.process__card{
  scroll-snap-align:start;
  flex:0 0 260px;
  border-radius:var(--radius);
  overflow:hidden;
  position:relative;
  box-shadow:var(--shadow);
  background:var(--navy);
}
.process__card img{height:340px;width:100%;object-fit:cover;opacity:.96;}
.process__card span{
  position:absolute;bottom:0;left:0;right:0;
  padding:14px 16px;
  background:linear-gradient(0deg, rgba(14,26,43,.92), rgba(14,26,43,0));
  color:#fff;font-weight:700;font-size:.9rem;font-family:var(--ff-head);
}

/* GALERIA */
.gallery{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:2rem;
}
.gallery__item{
  border:none;padding:0;cursor:pointer;
  border-radius:var(--radius);overflow:hidden;
  aspect-ratio:4/3;
  position:relative;
  box-shadow:var(--shadow);
}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.gallery__item:hover img{transform:scale(1.06);}

/* DEPOIMENTOS */
.testimonials{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:2rem;
}
.testimonial{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 26px;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
}
.testimonial__quote{
  color:var(--gray);
  font-size:.92rem;
  line-height:1.6;
  flex-grow:1;
  margin-bottom:18px;
}
.testimonial__author{
  border-top:1px solid var(--border);
  padding-top:14px;
}
.testimonial__author strong{
  display:block;
  font-family:var(--ff-head);
  font-size:1rem;
  color:var(--navy);
}
.testimonial__author span{
  font-size:.82rem;
  color:var(--teal-dark);
}

/* LIGHTBOX */
.lightbox{
  position:fixed;inset:0;background:rgba(14,26,43,.94);
  display:none;align-items:center;justify-content:center;
  z-index:1000;padding:40px;
}
.lightbox.active{display:flex;}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:8px;}
.lightbox__close{
  position:absolute;top:24px;right:30px;
  background:none;border:none;color:#fff;font-size:2.4rem;
  cursor:pointer;line-height:1;
  z-index:1002;
}
.lightbox__nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:52px;height:52px;border-radius:50%;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
  color:#fff;font-size:1.2rem;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .15s;
  z-index:1001;
  touch-action:manipulation;
}
.lightbox__nav:hover{background:rgba(255,255,255,.25);}
.lightbox__prev{left:16px;}
.lightbox__next{right:16px;}
@media (max-width:600px){
  .lightbox{padding:24px 16px;}
  .lightbox__nav{width:44px;height:44px;font-size:1rem;}
  .lightbox__prev{left:14px;}
  .lightbox__next{right:14px;}
}

/* CONTATO */
.contact{
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:60px;
}
.contact__info h2{margin-bottom:.8rem;}
.contact__info p{color:var(--gray);margin-bottom:1.8rem;max-width:420px;}
.contact__row{
  display:flex;align-items:center;gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--border);
  font-weight:600;
  transition:color .15s;
}
.contact__row:hover{color:var(--teal-dark);}
.contact__row--static{cursor:default;color:var(--ink);}
.contact__row--static:hover{color:var(--ink);}
.contact__icon{
  width:40px;height:40px;flex-shrink:0;
  background:var(--bg-alt);border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--teal-dark);
}

.contact__form{
  background:var(--bg-alt);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px;
  display:grid;
  gap:16px;
}
.contact__form label{
  display:flex;flex-direction:column;gap:6px;
  font-size:.85rem;font-weight:600;color:var(--navy);
}
.contact__form input,
.contact__form select,
.contact__form textarea{
  font-family:var(--ff-body);
  font-size:.95rem;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:8px;
  background:#fff;
  color:var(--ink);
  resize:vertical;
}
.contact__form input:focus,
.contact__form select:focus,
.contact__form textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(78,205,196,.2);
}
.hidden-field{position:absolute;left:-9999px;}
.form__note{font-size:.85rem;min-height:1.2em;}
.form__note.success{color:#1f9d55;font-weight:600;}
.form__note.error{color:#d64545;font-weight:600;}

/* FOOTER */
.footer{background:var(--navy);color:rgba(255,255,255,.75);}
.footer__top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr;
  gap:40px;
  padding-top:60px;
  padding-bottom:44px;
}
.footer__col h4{
  color:#fff;
  font-family:var(--ff-head);
  font-size:1rem;
  margin-bottom:16px;
}
.footer__col{display:flex;flex-direction:column;gap:12px;}
.footer__col a, .footer__col span{
  color:rgba(255,255,255,.72);
  font-size:.92rem;
  transition:color .15s;
}
.footer__col a:hover{color:var(--teal);}
.footer__brand p{color:rgba(255,255,255,.65);font-size:.9rem;max-width:340px;margin:14px 0 18px;}
.footer__logo{height:34px;width:auto;align-self:flex-start;}
.footer__social{display:flex;gap:12px;}
.footer__social a{
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);
  color:#fff;
  transition:background .15s, border-color .15s;
}
.footer__social a:hover{background:var(--teal);border-color:var(--teal);color:var(--navy);}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;}
.footer__bottom-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;
  font-size:.82rem;color:rgba(255,255,255,.5);
}
.footer__bottom-inner p{margin:0;}
.footer__privacy{color:rgba(255,255,255,.5);text-decoration:underline;font-size:.82rem;}
.footer__privacy:hover{color:var(--teal);}

/* WHATSAPP FLOAT */
.whatsapp-float{
  position:fixed;bottom:24px;right:24px;z-index:90;
  width:60px;height:60px;border-radius:50%;
  background:#25D366;color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(37,211,102,.5);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(37,211,102,.55);}
  70%{box-shadow:0 0 0 16px rgba(37,211,102,0);}
  100%{box-shadow:0 0 0 0 rgba(37,211,102,0);}
}

/* RESPONSIVE */
@media (max-width:960px){
  .nav{
    position:fixed;top:0;right:0;height:100vh;width:min(78vw,320px);
    background:var(--navy);flex-direction:column;
    padding:100px 32px 32px;gap:26px;
    transform:translateX(100%);transition:transform .3s ease;
    z-index:200;
    box-shadow:-10px 0 40px rgba(0,0,0,.3);
  }
  .nav.active{transform:translateX(0);}
  .nav-toggle{display:flex;}
  .header__cta{display:none;}
  .about,.contact{grid-template-columns:1fr;}
  .footer__top{grid-template-columns:1fr;gap:32px;text-align:left;}
  .footer__bottom-inner{flex-direction:column;text-align:center;}
  .about__img img{max-height:420px;width:100%;}
  .cards{grid-template-columns:repeat(2,1fr);}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .testimonials{grid-template-columns:repeat(2,1fr);}
  .steelframe__grid{grid-template-columns:repeat(2,1fr);}
  .steelframe__anatomy-grid{grid-template-columns:repeat(2,1fr);}
  .steelframe__top{grid-template-columns:1fr;}
  .steelframe__photo img{height:220px;}
}
@media (max-width:600px){
  .cards{grid-template-columns:1fr;}
  .gallery{grid-template-columns:1fr 1fr;}
  .testimonials{grid-template-columns:1fr;}
  .hero__stats{gap:30px;}
  .section{padding:60px 0;}
  .contact__form{padding:24px;}
  .steelframe{padding:70px 0;}
  .steelframe__grid{grid-template-columns:1fr;}
  .steelframe__anatomy-grid{grid-template-columns:1fr;}
  .steelframe__cta{flex-direction:column;}
  .steelframe__cta .btn{width:100%;}
}