:root{
  --vermelho:#A83334; --vermelho-d:#8c2829; --cinza:#56595B;
  --escuro:#1b1b1d; --claro:#f6f5f3;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Poppins',system-ui,Arial,sans-serif;color:#26282b;margin:0;background:#fff;line-height:1.6;
  display:flex;flex-direction:column;min-height:100vh}
main{flex:1 0 auto}
.footer{flex-shrink:0}
img{max-width:100%;display:block}
a{color:var(--vermelho);text-decoration:none}

/* ---- Navbar ---- */
.nav-chaaya{position:fixed;top:0;left:0;right:0;z-index:1030;transition:.35s;padding:18px 0}
.nav-chaaya.solid{background:#fff;box-shadow:0 4px 18px rgba(0,0,0,.08);padding:10px 0}
.nav-chaaya .wrap{max-width:1200px;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between}
.nav-chaaya .logo img{height:46px;transition:.35s}
.nav-chaaya.solid .logo img{height:40px}
.nav-links{display:flex;gap:30px;align-items:center;list-style:none;margin:0;padding:0}
.nav-links a{color:#fff;font-weight:500;font-size:.95rem;letter-spacing:.5px;text-transform:uppercase;position:relative;padding:4px 0}
.nav-chaaya.solid .nav-links a{color:#2b2b2b}
.nav-links a:hover,.nav-links a.ativo{color:var(--vermelho)}
.nav-chaaya.solid .nav-links a.ativo{color:var(--vermelho)}
.nav-links a.ativo::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--vermelho)}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.6rem;cursor:pointer}
.nav-chaaya.solid .nav-toggle{color:var(--vermelho)}

/* ---- Hero ---- */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;position:relative;
  background:linear-gradient(rgba(20,20,22,.45),rgba(20,20,22,.55)),var(--hero,linear-gradient(120deg,#3a3a3d,#1b1b1d));
  background-size:cover;background-position:center}
.hero h1{font-size:clamp(1.8rem,5vw,3.6rem);font-weight:700;letter-spacing:2px;text-transform:uppercase;margin:0 0 18px;text-shadow:0 2px 20px rgba(0,0,0,.4)}
.hero p{font-size:clamp(1rem,2vw,1.3rem);font-weight:300;max-width:680px;margin:0 auto 28px}
.btn-chaaya{display:inline-block;background:var(--vermelho);color:#fff;padding:13px 34px;border-radius:40px;font-weight:600;
  text-transform:uppercase;letter-spacing:1px;font-size:.85rem;transition:.25s;border:0;cursor:pointer}
.btn-chaaya:hover{background:var(--vermelho-d);transform:translateY(-2px);color:#fff}
.btn-ghost{background:transparent;border:2px solid #fff}
.btn-ghost:hover{background:#fff;color:var(--vermelho)}
.hero .scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:#fff;font-size:1.6rem;animation:bob 1.8s infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,10px)}}

/* ---- Seções ---- */
.sec{padding:84px 0}
.sec.alt{background:var(--claro)}
.container-c{max-width:1200px;margin:0 auto;padding:0 22px}
.sec-title{text-align:center;margin-bottom:50px}
.sec-title h2{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:700;margin:0 0 12px;color:#222}
.sec-title h2 span{color:var(--vermelho)}
.sec-title .line{width:64px;height:3px;background:var(--vermelho);margin:0 auto;border-radius:2px}
.sec-title p{color:var(--cinza);max-width:640px;margin:14px auto 0}

/* ---- Serviços ---- */
.servicos{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px}
.servico{background:#fff;border-radius:14px;padding:38px 30px;text-align:center;box-shadow:0 8px 30px rgba(0,0,0,.06);transition:.3s;border-top:4px solid transparent}
.servico:hover{transform:translateY(-6px);border-top-color:var(--vermelho);box-shadow:0 14px 40px rgba(0,0,0,.1)}
.servico .ico{width:72px;height:72px;border-radius:50%;background:rgba(168,51,52,.1);color:var(--vermelho);display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 20px}
.servico h3{font-size:1.3rem;margin:0 0 12px;color:#222}
.servico p{color:var(--cinza);font-size:.95rem;margin:0}

/* ---- Portfólio ---- */
.grid-portfolio{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.card-obra{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:4/3;box-shadow:0 8px 26px rgba(0,0,0,.1);background:linear-gradient(135deg,#b9b4ad,#8a857d)}
.card-obra img{width:100%;height:100%;object-fit:cover;transition:.5s}
.card-obra:hover img{transform:scale(1.08)}
.card-obra .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;opacity:.55;font-size:2.4rem}
.card-obra .leg{position:absolute;left:0;right:0;bottom:0;padding:38px 18px 16px;color:#fff;
  background:linear-gradient(transparent,rgba(0,0,0,.78));transform:translateY(8px);transition:.3s}
.card-obra .leg h3{margin:0;font-size:1.15rem;font-weight:600}
.card-obra .leg span{font-size:.82rem;opacity:.85;text-transform:uppercase;letter-spacing:1px}
.card-obra:hover .leg{transform:translateY(0)}

/* ---- Galeria / mídia ---- */
.grid-galeria{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.grid-galeria a{display:block;border-radius:10px;overflow:hidden;aspect-ratio:1;box-shadow:0 4px 14px rgba(0,0,0,.08)}
.grid-galeria img{width:100%;height:100%;object-fit:cover;transition:.4s}
.grid-galeria a:hover img{transform:scale(1.1)}

/* ---- Empresa ---- */
.empresa-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.empresa-grid .txt p{color:#444;margin:0 0 16px}
.valores{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:10px}
.valor{display:flex;gap:12px;align-items:flex-start}
.valor i{color:var(--vermelho);font-size:1.4rem;margin-top:2px}
.valor b{display:block;color:#222}
.empresa-foto{border-radius:16px;min-height:340px;background:linear-gradient(135deg,var(--vermelho),#5a1c1c);display:flex;align-items:center;justify-content:center}
.empresa-foto img{max-height:120px;filter:brightness(0) invert(1);opacity:.9}

/* ---- Contato ---- */
.contato-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.form-c label{display:block;font-size:.85rem;font-weight:600;color:#444;margin:0 0 6px}
.form-c input,.form-c textarea{width:100%;padding:12px 14px;border:1px solid #d8d6d2;border-radius:9px;font-family:inherit;font-size:.95rem;margin-bottom:16px;background:#fff}
.form-c input:focus,.form-c textarea:focus{outline:0;border-color:var(--vermelho);box-shadow:0 0 0 3px rgba(168,51,52,.12)}
.info-contato{display:flex;flex-direction:column;gap:20px}
.info-item{display:flex;gap:14px;align-items:flex-start}
.info-item .ico{width:48px;height:48px;border-radius:50%;background:rgba(168,51,52,.1);color:var(--vermelho);display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0}
.alert-c{padding:13px 16px;border-radius:9px;margin-bottom:18px;font-size:.92rem}
.alert-c.ok{background:#e6f4ea;color:#1f7a3d;border:1px solid #b6e0c4}
.alert-c.err{background:#fde8e8;color:#9b2222;border:1px solid #f0b6b6}

/* ---- Footer ---- */
.footer{background:var(--escuro);color:#cfcfcf;text-align:center;padding:42px 22px 26px}
.footer .social{display:flex;gap:16px;justify-content:center;margin-bottom:18px}
.footer .social a{width:46px;height:46px;border-radius:50%;background:linear-gradient(45deg,#f09433,#dc2743,#bc1888);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.3rem;transition:.25s}
.footer .social a:hover{transform:translateY(-3px)}
.footer .end{font-size:1rem;margin:0 0 6px;color:#fff}
.footer .cr{font-size:.82rem;opacity:.6}
.whats{position:fixed;right:20px;bottom:20px;width:58px;height:58px;border-radius:50%;background:#25d366;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.9rem;box-shadow:0 6px 20px rgba(0,0,0,.25);z-index:1030;transition:.25s}
.whats:hover{transform:scale(1.08);color:#fff}

/* ---- Mobile ---- */
@media(max-width:860px){
  .nav-toggle{display:block}
  .nav-links{position:fixed;top:0;right:-100%;height:100vh;width:74%;max-width:320px;background:#fff;flex-direction:column;
    justify-content:center;gap:26px;transition:.35s;box-shadow:-8px 0 30px rgba(0,0,0,.15)}
  .nav-links.aberto{right:0}
  .nav-links a{color:#222 !important;font-size:1.1rem}
  .empresa-grid,.contato-grid{grid-template-columns:1fr;gap:28px}
  .valores{grid-template-columns:1fr}
  .sec{padding:60px 0}
}