:root{
  --black:#0a0a0a;
  --white:#ffffff;
  --grey-100:#f5f5f5;
  --grey-300:#d9d9d9;
  --grey-600:#6b6b6b;
  --grey-800:#1a1a1a;
  --max-w:1200px;
  --pad:32px;
  font-size:16px;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--black);
  background:var(--white);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
.container{max-width:var(--max-w);margin:0 auto;padding:0 var(--pad);}

/* Progress bar */
.progress-bar{position:fixed;top:0;left:0;height:2px;background:var(--black);width:0%;z-index:1000;transition:width .1s linear;}

/* Header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  background:rgba(255,255,255,0);
  transition:background .3s ease, box-shadow .3s ease, padding .3s ease;
  padding:26px 0;
}
.site-header.scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(0,0,0,.06);
  padding:16px 0;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;}
.logo{font-weight:800;letter-spacing:.04em;font-size:1.25rem;}
.logo span{color:var(--grey-600);}
.main-nav{display:flex;align-items:center;gap:36px;font-size:.92rem;font-weight:500;}
.main-nav a{position:relative;padding:4px 0;}
.main-nav a:not(.nav-cta)::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--black);transition:width .25s ease;
}
.main-nav a:not(.nav-cta):hover::after{width:100%;}
.nav-cta{
  background:var(--black);color:var(--white);padding:10px 20px;border-radius:999px;font-weight:600;
  transition:transform .2s ease, opacity .2s ease;
}
.nav-cta:hover{opacity:.85;transform:translateY(-1px);}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.menu-toggle span{width:22px;height:2px;background:var(--black);display:block;}

/* Hero */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:flex-end;color:var(--white);overflow:hidden;
}
.hero-media{position:absolute;inset:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;transform:scale(1.05);}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(10,10,10,.35) 0%, rgba(10,10,10,.35) 45%, rgba(10,10,10,.88) 100%);
}
.hero-content{position:relative;z-index:2;padding-bottom:120px;padding-top:180px;}
.eyebrow{
  text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:600;color:var(--grey-300);margin-bottom:18px;
}
.hero h1{
  font-size:clamp(2.2rem, 5vw, 4rem);font-weight:700;line-height:1.08;max-width:820px;letter-spacing:-.01em;
}
.hero-sub{
  margin-top:22px;max-width:560px;font-size:1.05rem;color:var(--grey-300);
}
.hero-actions{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap;}

.btn{
  display:inline-block;padding:15px 30px;border-radius:999px;font-weight:600;font-size:.92rem;
  transition:transform .2s ease, background .2s ease, color .2s ease, opacity .2s ease;
  border:1px solid transparent;
}
.btn-primary{background:var(--white);color:var(--black);}
.btn-primary:hover{transform:translateY(-2px);opacity:.9;}
.btn-ghost{border-color:rgba(255,255,255,.5);color:var(--white);}
.btn-ghost:hover{background:rgba(255,255,255,.1);}
.btn-block{width:100%;text-align:center;border:0;cursor:pointer;}

.scroll-cue{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:2;
}
.scroll-cue span{
  display:block;width:1px;height:36px;background:rgba(255,255,255,.6);position:relative;overflow:hidden;
}
.scroll-cue span::after{
  content:'';position:absolute;top:-100%;left:0;width:100%;height:100%;background:var(--white);
  animation:cue 1.8s ease-in-out infinite;
}
@keyframes cue{0%{top:-100%;}50%{top:0;}100%{top:100%;}}

/* Stats */
.stats{padding:64px 0;border-bottom:1px solid var(--grey-300);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
.stat{display:flex;flex-direction:column;gap:6px;}
.stat-num{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:800;letter-spacing:-.02em;}
.stat-label{font-size:.85rem;color:var(--grey-600);text-transform:uppercase;letter-spacing:.05em;}

/* Sections generic */
.section{padding:120px 0;}
.section-tight{padding-top:100px;padding-bottom:120px;}
.section-dark{background:var(--black);color:var(--white);}
.kicker{
  text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:700;color:var(--grey-600);margin-bottom:16px;
}
.kicker-light{color:var(--grey-300);}
.section h2{font-size:clamp(1.7rem,3.4vw,2.6rem);font-weight:700;letter-spacing:-.01em;line-height:1.15;max-width:760px;}
.section-title-light{color:var(--white);}

/* About */
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;align-items:center;}
.about-media img{border-radius:4px;width:100%;aspect-ratio:4/5;object-fit:cover;}
.about-text p{margin-top:20px;color:var(--grey-800);max-width:600px;}
.about-text h2{margin-bottom:4px;}
.mvv{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:48px;padding-top:40px;border-top:1px solid var(--grey-300);}
.mvv-item h3{font-size:.95rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;}
.mvv-item p{margin-top:0;font-size:.92rem;color:var(--grey-600);max-width:none;}

/* Services */
.services-grid{margin-top:56px;display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--grey-800);}
.service-card{background:var(--black);overflow:hidden;position:relative;}
.service-card img{width:100%;aspect-ratio:1/1;object-fit:cover;transition:transform .5s ease;}
.service-card:hover img{transform:scale(1.06);}
.service-info{padding:26px 24px 30px;}
.service-info h3{font-size:1.15rem;font-weight:700;margin-bottom:10px;}
.service-info p{font-size:.9rem;color:var(--grey-300);}

/* Certifications */
.cert-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:80px;align-items:start;}
.cert-text p{margin-top:18px;color:var(--grey-800);max-width:560px;}
.iso-badge{
  margin-top:36px;display:inline-flex;flex-direction:column;gap:4px;border:1px solid var(--black);padding:20px 26px;border-radius:4px;
}
.iso-badge-code{font-weight:800;font-size:1.3rem;letter-spacing:.02em;}
.iso-badge-label{font-size:.82rem;color:var(--grey-600);}
.clients-label{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--grey-600);margin-bottom:22px;}
.clients-list{display:flex;flex-direction:column;}
.clients-list li{
  font-size:1.5rem;font-weight:700;letter-spacing:-.01em;padding:16px 0;border-bottom:1px solid var(--grey-300);
}
.clients-list li:first-child{border-top:1px solid var(--grey-300);}

/* Gallery */
.gallery-grid{
  margin-top:48px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
}
.gallery-grid img{
  width:100%;aspect-ratio:1/1;object-fit:cover;cursor:zoom-in;transition:transform .35s ease, opacity .35s ease;border-radius:2px;
}
.gallery-grid img:hover{transform:scale(1.02);opacity:.92;}

.lightbox{
  position:fixed;inset:0;background:rgba(10,10,10,.94);z-index:1100;display:none;align-items:center;justify-content:center;padding:40px;
}
.lightbox.active{display:flex;}
.lightbox img{max-width:90vw;max-height:85vh;object-fit:contain;border-radius:4px;}
.lightbox-close{
  position:absolute;top:28px;right:32px;background:none;border:0;color:var(--white);font-size:2.2rem;cursor:pointer;line-height:1;
}

/* Contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px;}
.contact-copy{margin-top:18px;color:var(--grey-300);max-width:480px;}
.contact-details{margin-top:40px;display:flex;flex-direction:column;gap:20px;}
.contact-details li{display:flex;flex-direction:column;gap:4px;font-size:1.05rem;}
.contact-details span{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--grey-600);}
.contact-details a:hover{text-decoration:underline;}

.contact-form{background:var(--white);color:var(--black);padding:40px;border-radius:6px;}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--grey-600);margin-bottom:8px;}
.form-row input,.form-row textarea{
  width:100%;border:0;border-bottom:1px solid var(--grey-300);padding:10px 2px;font-family:inherit;font-size:1rem;
  background:transparent;outline:none;transition:border-color .2s ease;resize:vertical;
}
.form-row input:focus,.form-row textarea:focus{border-color:var(--black);}
.hidden-field{position:absolute;left:-9999px;}
.form-note{margin-top:14px;font-size:.8rem;color:var(--grey-600);text-align:center;}

/* WhatsApp floating button */
.wa-float{
  position:fixed;right:24px;bottom:24px;z-index:950;
  width:56px;height:56px;border-radius:50%;
  background:var(--black);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 24px rgba(0,0,0,.28);
  transition:transform .2s ease, box-shadow .2s ease;
}
.wa-float svg{width:28px;height:28px;}
.wa-float:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 10px 30px rgba(0,0,0,.34);}

/* Footer */
.site-footer{padding:40px 0;border-top:1px solid var(--grey-300);}
.footer-inner{display:flex;align-items:center;justify-content:space-between;font-size:.85rem;color:var(--grey-600);}

/* Form success state */
.form-success{
  display:none;text-align:center;padding:40px 0;
}
.form-success.active{display:block;}

/* Responsive */
@media (max-width:960px){
  .about-grid,.cert-grid,.contact-grid{grid-template-columns:1fr;gap:48px;}
  .services-grid{grid-template-columns:repeat(2,1fr);}
  .gallery-grid{grid-template-columns:repeat(3,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);row-gap:32px;}
  .mvv{grid-template-columns:1fr;}
}
@media (max-width:720px){
  :root{--pad:20px;}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:78vw;max-width:320px;background:var(--white);
    flex-direction:column;align-items:flex-start;justify-content:center;gap:28px;padding:0 40px;
    transform:translateX(100%);transition:transform .35s ease;box-shadow:-8px 0 30px rgba(0,0,0,.08);
  }
  .main-nav.open{transform:translateX(0);}
  .menu-toggle{display:flex;}
  .services-grid,.gallery-grid{grid-template-columns:repeat(2,1fr);}
  .hero-content{padding-top:140px;padding-bottom:80px;}
  .contact-form{padding:28px;}
}