:root{
  --black:#141311;
  --charcoal:#242220;
  --iron:#5a5754;
  --stone:#8c8884;
  --silver:#cbc7c1;
  --ivory:#f3efe8;
  --paper:#faf8f4;
  --white:#ffffff;
  --font-display:'Fraunces', serif;
  --font-body:'Work Sans', sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--black);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
button{font-family:inherit;}

.wrap{
  max-width:1160px;
  margin:0 auto;
  padding:0 24px;
}

/* grain overlay for texture, no imagery needed */
.grain{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:999;
  opacity:.035;
  mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(250,248,244,.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(20,19,17,.08);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 24px;
  gap:24px;
}
.brand img{height:48px;width:auto;}
.header-nav{
  display:flex;
  gap:28px;
  font-size:.9rem;
  font-weight:500;
  flex:1;
  justify-content:center;
}
.header-nav a{opacity:.75;transition:opacity .2s;}
.header-nav a:hover{opacity:1;}

.btn{
  display:inline-block;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.92rem;
  letter-spacing:.01em;
  padding:13px 26px;
  border-radius:2px;
  transition:all .2s ease;
  border:1px solid transparent;
  cursor:pointer;
}
.btn-solid{
  background:var(--black);
  color:var(--white);
}
.btn-solid:hover{background:var(--iron);}
.btn-line{
  border-color:var(--black);
  color:var(--black);
  padding:10px 22px;
  font-size:.85rem;
}
.btn-line:hover{background:var(--black);color:var(--white);}
.btn-ghost{
  border-bottom:1px solid var(--white);
  padding:13px 4px;
  border-radius:0;
  color:var(--white);
}
.btn.full{width:100%;text-align:center;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  min-height:88vh;
  display:flex;
  align-items:flex-end;
  color:var(--white);
  padding:120px 0 90px;
  background-size:cover;
  background-position:center 70%;
  overflow:hidden;
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg, rgba(20,19,17,.72) 0%, rgba(20,19,17,.35) 32%, rgba(20,19,17,.55) 62%, rgba(20,19,17,.92) 100%);
}
.hero-inner{position:relative;max-width:760px;}
.eyebrow{
  font-size:.82rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--silver);
  margin:0 0 22px;
  font-weight:600;
}
.h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(2.4rem, 5.2vw, 4rem);
  line-height:1.08;
  margin:0 0 24px;
  text-shadow:0 2px 24px rgba(0,0,0,.25);
}
.h1 em{font-style:italic;font-weight:300;color:var(--white);}
.lead{
  font-size:1.1rem;
  color:var(--ivory);
  max-width:560px;
  margin:0 0 36px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-dark{background:var(--charcoal);color:var(--ivory);}
.section-dark .h2{color:var(--ivory);}
.section-stone{background:var(--iron);color:var(--ivory);}
.section-intro{
  text-align:center;
  max-width:520px;
  margin:-6px auto 44px;
  color:var(--silver);
}
.h2{
  font-family:var(--font-display);
  font-weight:500;
  font-size:clamp(1.7rem, 3vw, 2.4rem);
  line-height:1.18;
  margin:0 0 22px;
}
.h2.center{text-align:center;max-width:640px;margin-left:auto;margin-right:auto;}
.h2.light{color:var(--ivory);}

.split{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:56px;
  align-items:start;
}
.split.reverse{grid-template-columns:1fr 320px;}
.split-content p{max-width:640px;}
.section-dark .split-content p{color:var(--silver);}
.section:not(.section-dark) .split-content p{color:var(--iron);}
.split-photo img{
  border-radius:2px;
  filter:grayscale(.15);
}
.tag{
  display:inline-block;
  font-size:.78rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  font-weight:600;
  color:var(--silver);
  border-left:2px solid var(--stone);
  padding-left:12px;
}

/* diferenciais: foto + grid de cards */
.diff-layout{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:1px;
  background:rgba(20,19,17,.1);
  margin-top:56px;
  border:1px solid rgba(20,19,17,.1);
}
.diff-photo{overflow:hidden;}
.diff-photo img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(.1);
  transition:transform .5s ease;
}
.diff-photo:hover img{transform:scale(1.04);}
.cards-grid{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:1px;
  background:rgba(20,19,17,.1);
}
.card{
  background:var(--paper);
  padding:34px 28px;
}
.card-mark{
  font-family:var(--font-display);
  font-size:1.3rem;
  color:var(--iron);
  display:block;
  margin-bottom:12px;
}
.card h3{margin:0 0 10px;font-size:1.02rem;font-weight:600;}
.card p{margin:0;color:var(--iron);font-size:.92rem;}

/* portfolio / gallery */
.gallery{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  grid-auto-rows:260px;
  gap:8px;
  margin-top:16px;
}
.gallery-item{
  position:relative;
  border:none;
  padding:0;
  margin:0;
  overflow:hidden;
  cursor:pointer;
  background:var(--black);
}
.gallery-item img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease, opacity .3s ease;
  opacity:.92;
}
.gallery-item:hover img{transform:scale(1.06);opacity:1;}
.gallery-item::after{
  content:attr(data-caption);
  position:absolute;
  left:0;right:0;bottom:0;
  padding:10px 12px 8px;
  font-size:.78rem;
  font-weight:500;
  color:var(--white);
  background:linear-gradient(to top, rgba(20,19,17,.75), transparent);
  opacity:0;
  transition:opacity .25s ease;
}
.gallery-item:hover::after{opacity:1;}

/* services */
.services-list{
  display:flex;
  flex-wrap:wrap;
  gap:14px 16px;
  margin-top:44px;
  justify-content:center;
}
.services-list li{
  font-family:var(--font-display);
  font-size:1.15rem;
  padding:10px 22px;
  border:1px solid rgba(244,239,230,.4);
  border-radius:999px;
}

/* faq */
.faq-list{max-width:720px;margin:48px auto 0;}
.faq-item{
  border-bottom:1px solid rgba(244,239,230,.15);
  padding:20px 0;
}
.faq-item summary{
  cursor:pointer;
  font-weight:600;
  font-size:1.02rem;
  list-style:none;
  position:relative;
  padding-right:28px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:0;
  top:0;
  color:var(--silver);
  font-size:1.3rem;
}
.faq-item[open] summary::after{content:"–";}
.faq-item p{color:var(--silver);margin:14px 0 0;}

/* contato */
.contact-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:start;
}
.contact-copy p{color:var(--iron);max-width:420px;}
.contact-form{
  background:var(--ivory);
  padding:36px;
  border:1px solid rgba(20,19,17,.08);
}
.contact-form label{
  display:block;
  font-size:.85rem;
  font-weight:600;
  margin-bottom:16px;
  color:var(--black);
}
.contact-form input,
.contact-form textarea{
  width:100%;
  margin-top:6px;
  padding:11px 12px;
  font-family:var(--font-body);
  font-size:.95rem;
  border:1px solid rgba(20,19,17,.22);
  border-radius:2px;
  background:var(--paper);
  resize:vertical;
}
.contact-form input:focus,
.contact-form textarea:focus{
  outline:2px solid var(--iron);
  outline-offset:1px;
}

/* footer */
.site-footer{
  background:var(--black);
  color:var(--stone);
  padding:44px 0;
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:20px;
}
.footer-logo{height:44px;width:auto;filter:grayscale(1) brightness(1.9);}
.footer-links{display:flex;gap:22px;font-size:.9rem;}
.footer-links a{color:var(--ivory);}
.footer-links a:hover{color:var(--silver);}
.footer-credit{
  font-size:.82rem;
  margin:0;
}
.footer-credit a{color:var(--silver);text-decoration:underline;}

/* floating whatsapp */
.float-whats{
  position:fixed;
  right:20px;
  bottom:20px;
  width:56px;height:56px;
  border-radius:50%;
  background:var(--black);
  color:var(--white);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:90;
  box-shadow:0 6px 20px rgba(0,0,0,.3);
  transition:transform .2s ease;
}
.float-whats:hover{transform:scale(1.06);}

/* lightbox */
.lightbox{
  position:fixed;
  inset:0;
  background:rgba(15,14,13,.96);
  display:none;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  z-index:200;
  padding:40px 20px;
}
.lightbox.open{display:flex;}
.lightbox img{
  max-width:min(900px, 90vw);
  max-height:74vh;
  object-fit:contain;
  border-radius:2px;
}
.lightbox-caption{
  color:var(--ivory);
  margin-top:16px;
  font-size:.95rem;
  letter-spacing:.02em;
}
.lightbox-close{
  position:absolute;
  top:18px;right:22px;
  background:none;border:none;
  color:var(--white);
  font-size:2rem;
  line-height:1;
  cursor:pointer;
}
.lightbox-nav{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  background:none;border:none;
  color:var(--white);
  font-size:2.6rem;
  line-height:1;
  cursor:pointer;
  padding:10px 16px;
  opacity:.75;
}
.lightbox-nav:hover{opacity:1;}
.lightbox-prev{left:6px;}
.lightbox-next{right:6px;}

/* focus visibility */
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--iron);
  outline-offset:2px;
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width: 880px){
  .split,.split.reverse{grid-template-columns:1fr;gap:24px;}
  .split-photo{order:-1;}
  .diff-layout{grid-template-columns:1fr;}
  .diff-photo{min-height:220px;}
  .contact-wrap{grid-template-columns:1fr;}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:180px;}
  .gallery-item{grid-row:span 1 !important;grid-column:span 1 !important;}
  .header-nav{display:none;}
}
@media (max-width: 560px){
  .hero{min-height:78vh;padding:100px 0 64px;}
  .cards-grid{grid-template-columns:1fr;}
  .header-cta{display:none;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{text-align:center;}
  .services-list li{font-size:1rem;padding:9px 16px;}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px;}
}