/* Build4US — Clean Light Design System */
:root {
  --bg: #FAF9F6;
  --bg-section: #F2EFE9;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8F6F2;
  --text: #1A1A1A;
  --text-light: #6B6560;
  --text-muted: #9E9890;
  --accent: #4A90E2;
  --accent-hover: #357ABD;
  --border: #E5E0D8;
  --border-light: #EDE9E2;
  --shadow: 0 2px 16px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --whatsapp: #25D366;
  --whatsapp-hover: #20BA5A;
  --header-height: 72px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;font-size:16px;overflow-x:hidden;}

/* === HEADER === */
header{
  background:#F0EDE6;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  padding:0 2.5rem;
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  height:var(--header-height);
  gap:1rem;
}
.logo{display:flex;align-items:center;text-decoration:none;}
.logo img{height:52px;width:auto;}
.logo-text-link{
  font-size:1.35rem;font-weight:800;letter-spacing:-0.5px;
  color:var(--text);text-decoration:none;
  transition:opacity 0.2s;
}
.logo-text-link:hover{opacity:0.7;}
nav{display:flex;gap:2rem;align-items:center;}
nav a{text-decoration:none;color:var(--text-light);font-size:0.9rem;font-weight:500;letter-spacing:0.01em;transition:color 0.2s;}
nav a:hover,nav a.active{color:var(--text);}
.btn-nav{
  background:#4A90E2;color:#fff !important;
  padding:0.5rem 1.2rem;border-radius:var(--radius-sm);
  font-size:0.85rem;font-weight:600;letter-spacing:0.02em;
  transition:background 0.2s,transform 0.15s;
}
.btn-nav:hover{background:#357ABD;transform:translateY(-1px);}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.4rem;cursor:pointer;padding:0.3rem;}

/* === BUTTONS === */
.btn{
  display:inline-flex;align-items:center;gap:0.5rem;
  padding:0.85rem 2rem;border-radius:var(--radius-sm);
  font-weight:600;font-size:0.95rem;letter-spacing:0.02em;
  text-decoration:none;border:none;cursor:pointer;transition:all 0.2s;
}
.btn-primary{background:#4A90E2;color:#fff;}
.btn-primary:hover{background:#357ABD;transform:translateY(-2px);box-shadow:0 6px 20px rgba(74,144,226,0.35);}
.btn-secondary{background:transparent;color:#4A90E2;border:1.5px solid #4A90E2;}
.btn-secondary:hover{background:#4A90E2;color:#fff;}
.btn-whatsapp{background:var(--whatsapp);color:#fff;}
.btn-whatsapp:hover{background:var(--whatsapp-hover);transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,211,102,0.3);}
.btn-lg{padding:1rem 2.4rem;font-size:1rem;}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,0.6);}
.btn-outline:hover{background:rgba(255,255,255,0.1);border-color:#fff;}

/* === HERO === */
.hero{
  min-height:88vh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:5rem 2rem;
  background:var(--bg);
  position:relative;overflow:hidden;
}
.hero::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:1px;
  background:var(--border-light);
}
.hero-label{
  display:inline-block;
  font-size:0.75rem;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;
  color:var(--text-muted);margin-bottom:1.5rem;
}
.hero h1{
  font-size:clamp(2.4rem,5.5vw,4.2rem);font-weight:800;
  line-height:1.1;letter-spacing:-1.5px;
  max-width:820px;margin:0 auto 1.2rem;color:var(--text);
}
.hero h1 em{font-style:normal;color:var(--text-muted);}
.hero p{
  font-size:1.1rem;color:var(--text-light);
  max-width:520px;margin:0 auto 2.8rem;line-height:1.7;
}
.hero-buttons{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center;}

/* === SECTIONS === */
section{padding:5rem 2.5rem;max-width:1200px;margin:0 auto;}
.section-alt{background:var(--bg-section);max-width:100%;padding:5rem 2.5rem;}
.section-alt > .inner{max-width:1200px;margin:0 auto;}
.section-title{
  font-size:clamp(1.5rem,2.8vw,2rem);font-weight:700;
  letter-spacing:-0.5px;margin-bottom:0.5rem;
}
.section-label{
  font-size:0.72rem;font-weight:600;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--text-muted);margin-bottom:0.8rem;
}
.section-subtitle{color:var(--text-light);font-size:1rem;margin-bottom:3rem;line-height:1.6;}
.section-header{margin-bottom:3rem;}

/* === FEATURE CARDS === */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;}
.card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:2rem;transition:all 0.22s;
}
.card:hover{border-color:var(--text);transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.card-icon{font-size:1.6rem;margin-bottom:1.2rem;display:block;}
.card h3{font-size:1rem;font-weight:600;margin-bottom:0.4rem;letter-spacing:-0.2px;}
.card p{color:var(--text-light);font-size:0.9rem;line-height:1.65;}

/* === GALLERY GRID === */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:1.5rem;}
.piece-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;
  transition:all 0.22s;cursor:pointer;text-decoration:none;color:inherit;display:block;
}
.piece-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#bbb;}
.piece-card img{width:100%;height:230px;object-fit:cover;display:block;background:var(--bg-section);}
.piece-card-body{padding:1.3rem;}
.piece-card-body h3{font-size:1rem;font-weight:700;margin-bottom:0.4rem;letter-spacing:-0.2px;}
.piece-card-body p{font-size:0.88rem;color:var(--text-light);margin-bottom:0.8rem;line-height:1.6;}
.piece-card-price{font-size:1.1rem;font-weight:700;color:#4A90E2;margin-bottom:0.8rem;}
.piece-card-footer{display:flex;align-items:center;justify-content:space-between;gap:0.5rem;margin-top:0.5rem;}
.piece-card-body .tag{
  display:inline-block;background:var(--bg-section);color:var(--text-light);
  font-size:0.72rem;font-weight:600;padding:0.2rem 0.65rem;
  border-radius:50px;text-transform:uppercase;letter-spacing:0.06em;
  border:1px solid var(--border);
}
.piece-placeholder{grid-column:1/-1;text-align:center;padding:5rem 2rem;color:var(--text-muted);}
.piece-placeholder .icon{font-size:2.5rem;opacity:0.25;display:block;margin-bottom:1rem;}
.piece-placeholder p{font-size:0.95rem;}

/* === FILTERS === */
.filters{display:flex;gap:0.5rem;flex-wrap:wrap;margin-bottom:2.5rem;}
.filter-btn{
  background:transparent;border:1px solid var(--border);color:var(--text-light);
  padding:0.4rem 1rem;border-radius:50px;font-size:0.85rem;font-weight:500;
  cursor:pointer;transition:all 0.18s;font-family:var(--font);
}
.filter-btn:hover{border-color:var(--text);color:var(--text);}
.filter-btn.active{background:#4A90E2;border-color:#4A90E2;color:#fff;}

/* === ABOUT === */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:center;}
.about-text .section-title{margin-bottom:1.2rem;}
.about-text p{color:var(--text-light);line-height:1.8;margin-bottom:0.9rem;font-size:0.98rem;}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-top:2rem;}
.stat{border-top:2px solid var(--text);padding-top:1rem;}
.stat .num{font-size:2rem;font-weight:800;letter-spacing:-1px;line-height:1;}
.stat .lbl{font-size:0.8rem;color:var(--text-light);margin-top:0.2rem;font-weight:500;}

/* === PIECE PAGE === */
.piece-detail{
  display:grid;grid-template-columns:1.1fr 1fr;
  gap:4rem;align-items:start;
  padding:3rem 2.5rem;max-width:1100px;margin:0 auto;
}
.piece-detail img{width:100%;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-section);}
.piece-info h1{font-size:1.9rem;font-weight:700;letter-spacing:-0.5px;margin-bottom:0.6rem;}
.piece-info .meta{display:flex;gap:0.6rem;flex-wrap:wrap;margin-bottom:1.4rem;}
.piece-info .meta span{
  background:var(--bg-section);color:var(--text-light);
  font-size:0.78rem;font-weight:600;padding:0.25rem 0.7rem;
  border-radius:50px;border:1px solid var(--border);text-transform:uppercase;letter-spacing:0.04em;
}
.piece-info .desc{color:var(--text-light);line-height:1.8;margin-bottom:2rem;font-size:0.98rem;}
.btn-acquire{width:100%;justify-content:center;font-size:1rem;padding:1rem;}

/* === PIECE CARD MELHORADO === */
.piece-card-img{width:100%;height:240px;object-fit:cover;display:block;background:var(--bg-section);}
.piece-card-img-placeholder{width:100%;height:240px;display:flex;align-items:center;justify-content:center;font-size:3rem;background:var(--bg-section);}
.piece-card-body{padding:1.4rem;}
.piece-card-category{
  font-size:0.7rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--text-muted);margin-bottom:0.5rem;
}
.piece-card-title{font-size:1rem;font-weight:700;letter-spacing:-0.2px;margin-bottom:0.6rem;color:var(--text);line-height:1.3;}
.piece-card-meta{
  display:flex;gap:1rem;font-size:0.8rem;color:var(--text-light);
  margin-bottom:0.8rem;flex-wrap:wrap;
}
.piece-card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:0.6rem;}
.piece-card-price{font-size:1rem;font-weight:800;color:#4A90E2;letter-spacing:-0.3px;}
.piece-tags{display:flex;flex-wrap:wrap;gap:0.35rem;margin-top:0.5rem;}
.piece-tags .tag{
  background:var(--bg-section);color:var(--text-muted);
  font-size:0.68rem;font-weight:600;padding:0.18rem 0.55rem;
  border-radius:50px;text-transform:uppercase;letter-spacing:0.05em;
  border:1px solid var(--border);
}
/* === PIECE SPECS === */
.piece-specs{
  display:grid;grid-template-columns:1fr 1fr;
  gap:1rem;margin:1.5rem 0 2rem;
  border-top:1px solid var(--border-light);
  padding-top:1.5rem;
}
.spec-item{}
.spec-label{font-size:0.72rem;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:0.2rem;}
.spec-value{font-size:0.92rem;font-weight:600;color:var(--text);}
.category{
  display:inline-block;font-size:0.72rem;font-weight:700;letter-spacing:0.1em;
  text-transform:uppercase;color:var(--text-muted);
  border:1px solid var(--border);border-radius:50px;
  padding:0.2rem 0.7rem;margin-bottom:0.8rem;
}

/* === PAGE HERO === */
.page-hero{
  padding:4rem 2.5rem 3rem;text-align:center;
  border-bottom:1px solid var(--border-light);
}
.page-hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;letter-spacing:-1px;margin-bottom:0.5rem;}
.page-hero p{color:var(--text-light);font-size:1rem;}

/* === CONTACT === */
.contact-card{
  max-width:480px;margin:0 auto;text-align:center;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:3rem 2rem;
}
.contact-card .icon{font-size:2.5rem;margin-bottom:1rem;}
.contact-card h2{font-size:1.4rem;font-weight:700;margin-bottom:0.5rem;}
.contact-card p{color:var(--text-light);margin-bottom:1.8rem;font-size:0.95rem;line-height:1.7;}
.contact-email{color:var(--text-muted);font-size:0.85rem;margin-top:1.2rem;}
.contact-email a{color:var(--text-light);text-decoration:none;border-bottom:1px solid var(--border);}
.contact-email a:hover{color:var(--text);}

/* === CTA BANNER === */
.cta-banner{
  background:#4A90E2;color:#fff;
  padding:5rem 2.5rem;text-align:center;
}
.cta-banner h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700;letter-spacing:-0.5px;margin-bottom:0.7rem;}
.cta-banner p{color:rgba(255,255,255,0.85);margin-bottom:2.2rem;font-size:1rem;}

/* === WHATSAPP FAB === */
.whatsapp-fab{
  position:fixed;bottom:1.8rem;right:1.8rem;z-index:200;
  width:54px;height:54px;border-radius:50%;
  background:var(--whatsapp);color:#fff;
  display:flex;align-items:center;justify-content:center;
  text-decoration:none;
  box-shadow:0 4px 16px rgba(37,211,102,0.35);
  transition:all 0.2s;
}
.whatsapp-fab:hover{background:var(--whatsapp-hover);transform:scale(1.08);}
.whatsapp-fab svg{width:26px;height:26px;fill:#fff;}

/* === DIVIDER === */
hr.divider{border:none;border-top:1px solid var(--border-light);}

/* === FOOTER === */
footer{
  border-top:1px solid var(--border-light);
  padding:2rem 2.5rem;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:1rem;
}
.footer-logo img{height:40px;width:auto;opacity:0.8;}
.footer-brand{font-size:1rem;font-weight:700;letter-spacing:-0.3px;color:var(--text-muted);}
.footer-copy{font-size:0.82rem;color:var(--text-muted);}
.footer-copy a{color:var(--text-light);text-decoration:none;}
.footer-copy a:hover{color:var(--text);}

/* === FADE IN === */
.fade-in{opacity:0;transform:translateY(16px);transition:opacity 0.5s ease,transform 0.5s ease;}
.fade-in.visible{opacity:1;transform:translateY(0);}

/* === RESPONSIVE === */
@media(max-width:960px){
  .about-grid{grid-template-columns:1fr;gap:3rem;}
  .piece-detail{grid-template-columns:1fr;gap:2rem;}
}
@media(max-width:680px){
  nav{
    display:none;flex-direction:column;
    position:absolute;top:var(--header-height);left:0;right:0;
    background:rgba(250,249,246,0.97);
    border-bottom:1px solid var(--border);
    padding:1.5rem 2rem;gap:1.2rem;
    box-shadow:0 8px 24px rgba(0,0,0,0.08);
  }
  nav.open{display:flex;}
  .nav-toggle{display:block;}
  .hero{min-height:80vh;padding:3rem 1.4rem;}
  .hero h1{font-size:2rem;letter-spacing:-0.8px;}
  .hero p{font-size:0.98rem;}
  .hero-buttons{flex-direction:column;align-items:stretch;width:100%;max-width:320px;}
  .hero-buttons .btn{justify-content:center;width:100%;}
  section{padding:3rem 1.4rem;}
  .section-alt{padding:3rem 1.4rem;}
  .section-alt .inner{padding:0;}
  .about-stats{grid-template-columns:1fr 1fr;}
  .cards-grid{grid-template-columns:1fr;}
  .gallery-grid{grid-template-columns:1fr;}
  .filters{overflow-x:auto;flex-wrap:nowrap;padding-bottom:0.5rem;}
  footer{flex-direction:column;text-align:center;align-items:center;padding:1.5rem;}
  .cta-banner{padding:3rem 1.4rem;}
  .piece-detail{padding:1.5rem 1.4rem;}
  .contact-card{margin:0 1rem;}
  header{padding:0 1.2rem;}
  .logo img{height:44px;}
}
@media(max-width:400px){
  .hero h1{font-size:1.7rem;}
  .btn-lg{padding:0.85rem 1.5rem;font-size:0.95rem;}
}