/* =============================================================
   VERTEX ENGINEERING — STYLESHEET
   Design system: "Engineering Blueprint" — steel-truss line art,
   blueprint grids and dimension-line dividers built around the
   brand palette. Organized by section; see the table of contents.

   TABLE OF CONTENTS
   1.  Custom properties / reset
   2.  Base typography
   3.  Layout helpers & buttons
   4.  Top bar
   5.  Header & navigation
   6.  Hero
   7.  Service highlights
   8.  About
   9.  Services
   10. Projects
   11. Why choose us
   12. CTA band
   13. Contact
   14. Footer
   15. Floating buttons
   16. Animations
   17. Responsive
============================================================= */

/* ---------- 1. Custom properties / reset ---------- */
:root{
  --navy-deep:#071A3D;
  --navy-dark:#0B2450;
  --navy-mid:#0F2A54;
  --navy-mid-2:#15305e;
  --gold:#F2A900;
  --gold-light:#FFC94D;
  --white:#FFFFFF;
  --grey-light:#F5F6F8;
  --steel:#93A0B8;
  --ink:#141B2E;
  --ink-soft:#4B5568;
  --border-soft: rgba(7,26,61,0.08);
  --shadow-soft: 0 20px 45px rgba(7,26,61,0.10);
  --shadow-card: 0 10px 30px rgba(7,26,61,0.08);
  --radius: 14px;
  --container: 1200px;
  --ease: cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-family:'Oswald',sans-serif;font-weight:600;line-height:1.15;color:var(--navy-deep);}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:1rem;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
}

/* focus visibility for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
}

/* ---------- 2. Base typography ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:'JetBrains Mono',monospace;
  font-size:0.78rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--gold);
  font-weight:600;
  margin-bottom:14px;
}
.eyebrow--light{color:var(--gold-light);}
.eyebrow__tick{
  width:26px;
  height:2px;
  background:var(--gold);
  display:inline-block;
}

.section-title{
  font-size:clamp(1.9rem, 3.2vw, 2.6rem);
  text-transform:uppercase;
  letter-spacing:0.01em;
  margin-bottom:16px;
}
.section-title--light{color:var(--white);}
.section-sub{
  max-width:620px;
  color:var(--ink-soft);
  font-size:1.02rem;
}
.section-sub--light{color:var(--steel);}

.section-head{margin-bottom:52px;}
.section-head--light{margin-bottom:52px;}

/* ---------- 3. Layout helpers & buttons ---------- */
section{position:relative;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:15px 30px;
  font-family:'Oswald',sans-serif;
  font-size:0.92rem;
  font-weight:600;
  letter-spacing:0.05em;
  text-transform:uppercase;
  border-radius:6px;
  border:2px solid transparent;
  transition:transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), border-color .25s var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-3px);}
.btn--gold{
  background:var(--gold);
  color:var(--navy-deep);
  box-shadow:0 10px 24px rgba(242,169,0,0.28);
}
.btn--gold:hover{background:var(--gold-light);box-shadow:0 14px 30px rgba(242,169,0,0.38);}

.btn--outline{
  border-color:rgba(255,255,255,0.35);
  color:var(--white);
  background:transparent;
}
.btn--outline:hover{border-color:var(--gold);color:var(--gold-light);}

.btn--outline-light{
  border-color:rgba(255,255,255,0.5);
  color:var(--white);
  background:rgba(255,255,255,0.06);
}
.btn--outline-light:hover{background:rgba(255,255,255,0.14);border-color:var(--white);}

.btn--whatsapp{
  background:#25D366;
  color:#08341c;
  box-shadow:0 10px 24px rgba(37,211,102,0.28);
}
.btn--whatsapp:hover{background:#2fe376;}
.btn--sm{padding:11px 20px;font-size:0.82rem;}
.btn--block{width:100%;}
.btn__icon{width:18px;height:18px;flex-shrink:0;}

/* ---------- 4. Top bar ---------- */
.topbar{
  background:var(--navy-deep);
  color:var(--steel);
  font-size:0.83rem;
}
.topbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:8px 24px;
  gap:16px;
}
.topbar__left{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}
.topbar__link{
  display:inline-flex;align-items:center;gap:7px;
  transition:color .2s var(--ease);
}
.topbar__link:hover{color:var(--gold-light);}
.topbar__right{display:flex;align-items:center;gap:7px;}
.topbar__icon{width:14px;height:14px;flex-shrink:0;}

/* ---------- 5. Header & navigation ---------- */
.header{
  position:sticky;
  top:0;
  z-index:200;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border-soft);
  transition:box-shadow .3s var(--ease), padding .3s var(--ease);
}
.header.is-scrolled{box-shadow:0 8px 26px rgba(7,26,61,0.10);}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:14px 24px;
}
.brand{display:inline-flex;align-items:center;}
.brand__logo{height:52px;width:auto;transition:height .3s var(--ease);}
.header.is-scrolled .brand__logo{height:42px;}

.nav__list{display:flex;align-items:center;gap:34px;}
.nav__link{
  position:relative;
  font-family:'Oswald',sans-serif;
  font-size:0.92rem;
  font-weight:500;
  letter-spacing:0.03em;
  text-transform:uppercase;
  color:var(--navy-deep);
  padding:6px 0;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;
  height:2px;
  background:var(--gold);
  transition:width .25s var(--ease);
}
.nav__link:hover::after,
.nav__link.is-active::after{width:100%;}
.nav__link:hover, .nav__link.is-active{color:var(--gold);}

.header__actions{display:flex;align-items:center;gap:18px;}

.hamburger{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:34px;height:34px;
  background:none;border:none;
  padding:6px;
}
.hamburger span{
  display:block;height:2px;width:100%;
  background:var(--navy-deep);
  border-radius:2px;
  transition:transform .3s var(--ease), opacity .3s var(--ease);
}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-menu{
  position:fixed;
  top:0; right:0;
  height:100%;
  width:min(340px, 84vw);
  background:var(--navy-deep);
  padding:90px 32px 40px;
  display:flex;
  flex-direction:column;
  gap:34px;
  transform:translateX(100%);
  transition:transform .35s var(--ease);
  z-index:210;
  overflow-y:auto;
  box-shadow:-14px 0 40px rgba(0,0,0,0.28);
}
.mobile-menu.is-open{transform:translateX(0);}
.mobile-menu__logo{height:38px;width:auto;filter:brightness(0) invert(1);position:absolute;top:26px;left:32px;}
.mobile-menu__close{
  position:absolute;
  top:22px; right:22px;
  width:38px;height:38px;
  background:none;
  border:1px solid rgba(242,169,0,0.35);
  border-radius:8px;
  color:var(--gold);
  display:flex;align-items:center;justify-content:center;
  padding:8px;
  transition:background .2s var(--ease), transform .2s var(--ease);
}
.mobile-menu__close:hover{background:rgba(242,169,0,0.12);transform:rotate(90deg);}
.mobile-menu__close svg{width:100%;height:100%;}
.mobile-menu__list{display:flex;flex-direction:column;gap:22px;}
.mobile-menu__link{
  font-family:'Oswald',sans-serif;
  font-size:1.2rem;
  text-transform:uppercase;
  letter-spacing:0.03em;
  color:var(--white);
}
.mobile-menu__link:hover, .mobile-menu__link.is-active{color:var(--gold);}

.menu-scrim{
  position:fixed;inset:0;
  background:rgba(7,26,61,0.55);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease);
  z-index:195;
}
.menu-scrim.is-visible{opacity:1;visibility:visible;}

/* ---------- 6. Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(160deg, var(--navy-deep) 0%, var(--navy-dark) 60%, var(--navy-mid-2) 100%);
  overflow:hidden;
  padding:100px 0 60px;
  min-height:88vh;
  display:flex;
  align-items:center;
}
.hero__grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(242,169,0,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242,169,0,0.08) 1px, transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse at 60% 40%, black 10%, transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 60% 40%, black 10%, transparent 72%);
}
.hero__glow{
  position:absolute;
  top:-10%; right:-8%;
  width:600px;height:600px;
  background:radial-gradient(circle, rgba(242,169,0,0.16) 0%, transparent 70%);
  filter:blur(10px);
}
.hero__inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.15fr 0.85fr;
  gap:40px;
  align-items:center;
}
.hero__title{
  color:var(--white);
  font-size:clamp(2.3rem, 5vw, 3.7rem);
  letter-spacing:0.01em;
  text-transform:uppercase;
  margin-bottom:22px;
}
.hero__title-sub{
  display:block;
  font-size:0.42em;
  color:var(--gold);
  letter-spacing:0.12em;
  margin-top:10px;
  font-weight:500;
}
.hero__desc{
  color:var(--steel);
  font-size:1.08rem;
  max-width:520px;
  margin-bottom:36px;
}
.hero__actions{display:flex;gap:18px;flex-wrap:wrap;}

.hero__visual{position:relative;display:flex;align-items:center;justify-content:center;}
.truss-svg{width:100%;max-width:460px;height:auto;}
.truss-svg__lines polygon,
.truss-svg__lines polyline{
  stroke-dasharray:1400;
  stroke-dashoffset:1400;
  animation:draw 2.6s var(--ease) forwards;
}
.truss-svg__nodes circle{
  opacity:0;
  animation:fadeIn .6s var(--ease) forwards;
  animation-delay:2.4s;
}
@keyframes draw{to{stroke-dashoffset:0;}}
@keyframes fadeIn{to{opacity:1;}}

.hero__tag{
  position:absolute;
  font-family:'JetBrains Mono',monospace;
  font-size:0.72rem;
  letter-spacing:0.08em;
  color:var(--steel);
  border:1px solid rgba(242,169,0,0.35);
  padding:5px 10px;
  border-radius:4px;
  background:rgba(11,36,80,0.5);
  opacity:0;
  animation:fadeIn .6s var(--ease) forwards;
  animation-delay:2.6s;
}
.hero__tag--1{top:8%;left:0;}
.hero__tag--2{bottom:6%;right:2%;}

.hero__scroll{
  position:absolute;
  bottom:26px; left:50%;
  transform:translateX(-50%);
  width:26px;height:42px;
  border:2px solid rgba(255,255,255,0.4);
  border-radius:20px;
  z-index:2;
}
.hero__scroll span{
  position:absolute;
  top:8px;left:50%;
  transform:translateX(-50%);
  width:4px;height:8px;
  background:var(--gold);
  border-radius:3px;
  animation:scrollDot 1.8s infinite var(--ease);
}
@keyframes scrollDot{0%{opacity:1;top:8px;}70%{opacity:0;top:22px;}100%{opacity:0;top:8px;}}

/* ---------- 7. Service highlights ---------- */
.highlights{
  background:var(--white);
  padding:0 0 0;
  margin-top:-1px;
}
.highlights__grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  transform:translateY(-46px);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-soft);
}
.highlight{
  background:var(--white);
  padding:34px 26px;
  display:flex;
  flex-direction:column;
  gap:14px;
  border-right:1px solid var(--border-soft);
  transition:background .25s var(--ease), transform .25s var(--ease);
}
.highlight:last-child{border-right:none;}
.highlight:hover{background:var(--navy-deep);transform:translateY(-4px);}
.highlight:hover .highlight__title,
.highlight:hover .highlight__desc{color:var(--white);}
.highlight:hover .highlight__icon{color:var(--gold);}
.highlight__icon{width:40px;height:40px;color:var(--navy-deep);transition:color .25s var(--ease);}
.highlight__icon svg{width:100%;height:100%;}
.highlight__title{font-size:1.06rem;text-transform:uppercase;letter-spacing:0.02em;transition:color .25s var(--ease);}
.highlight__desc{color:var(--ink-soft);font-size:0.9rem;transition:color .25s var(--ease);}

/* ---------- 8. About ---------- */
.about{
  padding:40px 0 110px;
  background:var(--white);
}
.about__grid{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:70px;
  align-items:center;
}
.about__frame{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  aspect-ratio:480/520;
  background:var(--navy-deep);
}
.about__art{width:100%;height:100%;display:block;}
.about__badge{
  position:absolute;
  bottom:22px; left:22px;
  background:rgba(7,26,61,0.85);
  backdrop-filter:blur(4px);
  color:var(--white);
  font-family:'JetBrains Mono',monospace;
  font-size:0.78rem;
  padding:10px 16px;
  border-radius:8px;
  border-left:3px solid var(--gold);
}
.about__badge strong{color:var(--gold);display:block;font-size:0.7rem;text-transform:uppercase;letter-spacing:0.08em;}

.about__text{color:var(--ink-soft);margin-bottom:16px;font-size:1.02rem;}
.about__points{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px 18px;
  margin:26px 0 36px;
}
.about__points li{
  position:relative;
  padding-left:24px;
  font-weight:500;
  color:var(--navy-deep);
  font-size:0.96rem;
}
.about__points li::before{
  content:"";
  position:absolute;
  left:0; top:7px;
  width:11px;height:11px;
  border:2px solid var(--gold);
  transform:rotate(45deg);
}

.stats{
  display:flex;
  gap:0;
  border-top:1px solid var(--border-soft);
  padding-top:30px;
}
.stat{
  flex:1;
  display:flex;
  align-items:center;
  gap:12px;
  padding-right:16px;
}
.stat__icon{
  width:38px;height:38px;
  flex-shrink:0;
  color:var(--gold);
  background:var(--navy-deep);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  padding:8px;
}
.stat__label{font-family:'Oswald',sans-serif;font-size:0.92rem;text-transform:uppercase;letter-spacing:0.02em;color:var(--navy-deep);}

/* ---------- 9. Services ---------- */
.services{
  padding:100px 0;
  background:var(--grey-light);
}
.services__grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:26px;
}
.service-card{
  position:relative;
  background:var(--white);
  border-radius:var(--radius);
  padding:34px 26px;
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
  overflow:hidden;
}
.service-card:hover{transform:translateY(-8px);box-shadow:0 22px 40px rgba(7,26,61,0.14);}
.service-card__corner{
  position:absolute;
  top:0; right:0;
  width:0; height:0;
  border-style:solid;
  border-width:0 46px 46px 0;
  border-color:transparent var(--gold) transparent transparent;
  opacity:0;
  transition:opacity .3s var(--ease);
}
.service-card:hover .service-card__corner{opacity:1;}
.service-card__icon{
  width:52px;height:52px;
  color:var(--navy-deep);
  background:var(--grey-light);
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  padding:11px;
  margin-bottom:20px;
  transition:background .3s var(--ease), color .3s var(--ease);
}
.service-card:hover .service-card__icon{background:var(--navy-deep);color:var(--gold);}
.service-card__title{font-size:1.08rem;text-transform:uppercase;letter-spacing:0.01em;margin-bottom:10px;}
.service-card__desc{color:var(--ink-soft);font-size:0.92rem;}

/* ---------- 10. Projects ---------- */
.projects{
  padding:100px 0;
  background:var(--navy-deep);
  position:relative;
}
.projects__grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.project-card{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:4/3;
  box-shadow:0 18px 40px rgba(0,0,0,0.28);
  background:var(--navy-deep);
}
.project-card__art{width:100%;height:100%;}
.project-card__art svg{width:100%;height:100%;display:block;transition:transform .5s var(--ease);}
.project-card:hover .project-card__art svg{transform:scale(1.08);}
.project-card__overlay{
  position:absolute;inset:0;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:26px;
  background:linear-gradient(0deg, rgba(7,26,61,0.92) 8%, rgba(7,26,61,0.35) 55%, rgba(7,26,61,0.05) 100%);
}
.project-card__tag{
  font-family:'JetBrains Mono',monospace;
  font-size:0.72rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--gold-light);
  margin-bottom:8px;
}
.project-card__title{
  color:var(--white);
  font-size:1.18rem;
  text-transform:uppercase;
  margin-bottom:14px;
}
.project-card__btn{
  display:inline-flex;
  align-self:flex-start;
  align-items:center;
  gap:8px;
  font-family:'Oswald',sans-serif;
  font-size:0.8rem;
  text-transform:uppercase;
  letter-spacing:0.05em;
  color:var(--navy-deep);
  background:var(--gold);
  padding:9px 16px;
  border-radius:5px;
  opacity:0;
  transform:translateY(8px);
  transition:opacity .3s var(--ease), transform .3s var(--ease), background .25s var(--ease);
}
.project-card:hover .project-card__btn{opacity:1;transform:translateY(0);}
.project-card__btn:hover{background:var(--gold-light);}

/* ---------- 11. Why choose us ---------- */
.why-us{padding:100px 0;background:var(--white);}
.why-us__grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.why-card{
  text-align:center;
  padding:38px 20px;
  border:1px solid var(--border-soft);
  border-radius:var(--radius);
  transition:transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.why-card:hover{transform:translateY(-6px);border-color:var(--gold);background:var(--grey-light);}
.why-card__icon{
  width:56px;height:56px;
  margin:0 auto 18px;
  color:var(--navy-deep);
  border:2px solid var(--gold);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  padding:13px;
}
.why-card__title{font-size:0.98rem;text-transform:uppercase;letter-spacing:0.01em;}

/* ---------- 12. CTA band ---------- */
.cta{
  background:linear-gradient(120deg, var(--navy-dark), var(--navy-deep));
  padding:90px 0;
  position:relative;
  overflow:hidden;
}
.cta__grid{
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg, rgba(242,169,0,0.06) 0 2px, transparent 2px 34px);
}
.cta__inner{position:relative;z-index:2;text-align:center;}
.cta__title{
  color:var(--white);
  font-size:clamp(1.7rem, 3.4vw, 2.5rem);
  text-transform:uppercase;
  margin-bottom:16px;
}
.cta__text{color:var(--steel);max-width:560px;margin:0 auto 34px;font-size:1.02rem;}
.cta__actions{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;}

/* ---------- 13. Contact ---------- */
.contact{padding:100px 0;background:var(--grey-light);}
.contact__grid{
  display:grid;
  grid-template-columns:0.85fr 1.15fr;
  gap:50px;
  margin-bottom:50px;
}
.contact__info{
  background:var(--navy-deep);
  border-radius:var(--radius);
  padding:40px 34px;
  color:var(--white);
}
.contact__company{
  font-size:1.2rem;
  text-transform:uppercase;
  color:var(--white);
  margin-bottom:28px;
  line-height:1.4;
}
.contact__item{
  display:flex;
  gap:16px;
  align-items:flex-start;
  margin-bottom:24px;
}
.contact__icon{
  width:38px;height:38px;
  flex-shrink:0;
  color:var(--gold);
  border:1px solid rgba(242,169,0,0.4);
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  padding:8px;
}
.contact__label{
  display:block;
  font-family:'JetBrains Mono',monospace;
  font-size:0.7rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--steel);
  margin-bottom:4px;
}
.contact__value{color:var(--white);font-size:0.98rem;transition:color .2s var(--ease);}
a.contact__value:hover{color:var(--gold-light);}
.contact__info .btn{margin-top:10px;}

.contact__form{
  background:var(--white);
  border-radius:var(--radius);
  padding:40px;
  box-shadow:var(--shadow-card);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.form-group{margin-bottom:20px;}
.form-group label{
  display:block;
  font-family:'Oswald',sans-serif;
  font-size:0.82rem;
  text-transform:uppercase;
  letter-spacing:0.03em;
  color:var(--navy-deep);
  margin-bottom:8px;
}
.form-group input,
.form-group textarea{
  width:100%;
  padding:13px 15px;
  border:1.5px solid var(--border-soft);
  border-radius:8px;
  background:var(--grey-light);
  color:var(--ink);
  transition:border-color .2s var(--ease), background .2s var(--ease);
  resize:vertical;
}
.form-group input:focus,
.form-group textarea:focus{
  border-color:var(--gold);
  background:var(--white);
  outline:none;
}
.form-note{
  font-size:0.8rem;
  color:var(--ink-soft);
  margin-top:14px;
  text-align:center;
}
.form-note.is-success{color:#1b8a4c;font-weight:600;}
.form-note.is-error{color:#c0392b;font-weight:600;}

.map{
  width:100%;
  height:380px;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.map iframe{width:100%;height:100%;}

/* ---------- 14. Footer ---------- */
.footer{
  background:var(--navy-deep);
  color:var(--steel);
  position:relative;
  overflow:hidden;
  padding-top:80px;
}
.footer__grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(242,169,0,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242,169,0,0.05) 1px, transparent 1px);
  background-size:46px 46px;
}
.footer__inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:1.4fr 0.85fr 1fr 1.15fr;
  gap:40px;
  padding-bottom:50px;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer__mark{height:44px;width:auto;margin-bottom:14px;}
.footer__brand-name{color:var(--white);font-size:1.3rem;text-transform:uppercase;margin-bottom:2px;}
.footer__desc{color:var(--gold-light);font-size:0.88rem;margin-bottom:14px;}
.footer__desc--muted{color:var(--steel);margin-bottom:22px;line-height:1.7;}
.footer__heading{
  color:var(--white);
  font-size:1rem;
  text-transform:uppercase;
  letter-spacing:0.03em;
  margin-bottom:22px;
  position:relative;
  padding-bottom:12px;
}
.footer__heading::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:30px;height:2px;
  background:var(--gold);
}
.footer__list{display:flex;flex-direction:column;gap:13px;}
.footer__list a{font-size:0.92rem;transition:color .2s var(--ease), padding-left .2s var(--ease);}
.footer__list a:hover{color:var(--gold-light);padding-left:4px;}
.footer__list--contact li{font-size:0.9rem;line-height:1.6;}
.footer__list--contact a:hover{color:var(--gold-light);}

.footer__bottom-inner{
  position:relative;z-index:2;
  padding:24px;
  text-align:center;
  font-size:0.85rem;
  color:var(--steel);
}

/* ---------- 15. Floating buttons ---------- */
.float-whatsapp{
  position:fixed;
  bottom:26px; right:26px;
  width:58px;height:58px;
  background:#25D366;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(37,211,102,0.4);
  z-index:150;
  color:var(--white);
  transition:transform .25s var(--ease);
  animation:pulse 2.6s infinite;
}
.float-whatsapp svg{width:30px;height:30px;}
.float-whatsapp:hover{transform:scale(1.08);}
@keyframes pulse{
  0%{box-shadow:0 10px 26px rgba(37,211,102,0.4), 0 0 0 0 rgba(37,211,102,0.5);}
  70%{box-shadow:0 10px 26px rgba(37,211,102,0.4), 0 0 0 14px rgba(37,211,102,0);}
  100%{box-shadow:0 10px 26px rgba(37,211,102,0.4), 0 0 0 0 rgba(37,211,102,0);}
}

.back-to-top{
  position:fixed;
  bottom:26px; right:96px;
  width:46px;height:46px;
  background:var(--navy-deep);
  color:var(--gold);
  border:none;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(7,26,61,0.3);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
  z-index:150;
}
.back-to-top svg{width:20px;height:20px;}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* ---------- 16. Scroll reveal animation ---------- */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible{opacity:1;transform:translateY(0);}

/* ---------- 17. Responsive ---------- */
@media (max-width:1080px){
  .hero__inner{grid-template-columns:1fr;text-align:center;}
  .hero__content{order:1;}
  .hero__actions{justify-content:center;}
  .hero__desc{margin-left:auto;margin-right:auto;}
  .hero__visual{order:2;max-width:380px;margin:0 auto;}

  .about__grid{grid-template-columns:1fr;gap:44px;}
  .about__frame{max-width:460px;margin:0 auto;}

  .services__grid{grid-template-columns:repeat(2,1fr);}
  .why-us__grid{grid-template-columns:repeat(2,1fr);}
  .projects__grid{grid-template-columns:repeat(2,1fr);}

  .contact__grid{grid-template-columns:1fr;}
  .footer__inner{grid-template-columns:1fr 1fr;row-gap:44px;}
}

@media (max-width:860px){
  .nav{display:none;}
  .header__actions .btn{display:none;}
  .hamburger{display:flex;}
  .highlights__grid{grid-template-columns:repeat(2,1fr);}
  .highlight{border-right:1px solid var(--border-soft);}
  .highlight:nth-child(2n){border-right:none;}
}

@media (max-width:640px){
  .topbar__inner{flex-direction:column;align-items:flex-start;gap:6px;padding:10px 20px;}
  .topbar__right{padding-left:21px;}

  .hero{padding:80px 0 50px;}
  .hero__title{font-size:2.1rem;}

  .highlights__grid{grid-template-columns:1fr;transform:translateY(-30px);}
  .highlight{border-right:none;border-bottom:1px solid var(--border-soft);}
  .highlight:last-child{border-bottom:none;}

  .services__grid{grid-template-columns:1fr;}
  .why-us__grid{grid-template-columns:1fr;}
  .projects__grid{grid-template-columns:1fr;}

  .about__points{grid-template-columns:1fr;}
  .stats{flex-direction:column;gap:20px;}

  .form-row{grid-template-columns:1fr;}
  .contact__form{padding:28px 22px;}
  .contact__info{padding:30px 24px;}

  .footer__inner{grid-template-columns:1fr;}
  .cta__actions{flex-direction:column;align-items:center;}
  .cta__actions .btn{width:100%;max-width:300px;}

  .float-whatsapp{width:52px;height:52px;bottom:20px;right:20px;}
  .back-to-top{width:42px;height:42px;bottom:20px;right:82px;}
}

/* =============================================================
   MULTI-PAGE ADDITIONS
   Interior page hero banners, breadcrumbs, service/project detail
   layouts, image galleries, spec lists, and teaser/related grids
   for the multi-page site structure.
============================================================= */

/* ---------- Page hero (interior pages) ---------- */
.page-hero{
  position:relative;
  background:linear-gradient(160deg, var(--navy-deep) 0%, var(--navy-dark) 60%, var(--navy-mid-2) 100%);
  overflow:hidden;
  padding:150px 0 70px;
}
.page-hero__grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(242,169,0,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242,169,0,0.08) 1px, transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse at 30% 40%, black 10%, transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 30% 40%, black 10%, transparent 72%);
}
.page-hero__inner{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:'JetBrains Mono',monospace;
  font-size:0.78rem;
  color:var(--steel);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--steel);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--gold-light);}
.breadcrumb span{color:var(--gold);}
.page-hero__title{
  color:var(--white);
  font-size:clamp(2rem, 4vw, 3rem);
  text-transform:uppercase;
  margin-bottom:14px;
  max-width:800px;
}
.page-hero__desc{color:var(--steel);max-width:640px;font-size:1.05rem;}

/* ---------- Detail layout (service / project) ---------- */
.detail{padding:80px 0;background:var(--white);}
.detail__grid{
  display:grid;
  grid-template-columns:1.15fr 0.85fr;
  gap:60px;
  align-items:start;
}
.detail__image{
  width:100%;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  aspect-ratio:4/3;
  background:var(--navy-deep);
}
.detail__image img{width:100%;height:100%;object-fit:cover;display:block;}
.detail__body p{color:var(--ink-soft);font-size:1.03rem;margin-bottom:18px;}
.detail__body h3{font-size:1.3rem;text-transform:uppercase;margin:30px 0 16px;}

.includes-list{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px;margin-bottom:10px;}
.includes-list li{
  position:relative;
  padding-left:26px;
  color:var(--navy-deep);
  font-weight:500;
  font-size:0.96rem;
}
.includes-list li::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:14px;height:14px;
  border:2px solid var(--gold);
  border-radius:3px;
}

.detail__sidebar{
  background:var(--grey-light);
  border-radius:var(--radius);
  padding:32px 26px;
  position:sticky;
  top:110px;
}
.detail__sidebar h4{
  font-size:1.05rem;
  text-transform:uppercase;
  margin-bottom:18px;
  padding-bottom:14px;
  border-bottom:1px solid var(--border-soft);
}
.specs-list{display:flex;flex-direction:column;gap:14px;margin-bottom:24px;}
.specs-list .spec-row{display:flex;justify-content:space-between;gap:10px;font-size:0.92rem;}
.specs-list .spec-label{color:var(--ink-soft);}
.specs-list .spec-value{color:var(--navy-deep);font-weight:600;text-align:right;}

.detail__gallery{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  margin-top:24px;
}
.detail__gallery img{
  width:100%;height:150px;object-fit:cover;
  border-radius:10px;
  display:block;
  background:var(--navy-deep);
}

.illustration-note{
  background:var(--grey-light);
  border-left:3px solid var(--gold);
  padding:14px 18px;
  border-radius:8px;
  font-size:0.88rem;
  color:var(--ink-soft);
  margin-bottom:28px;
}

/* ---------- Related grid ---------- */
.related{padding:80px 0;background:var(--grey-light);}
.related__grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}

/* ---------- Teaser "view all" link ---------- */
.view-all{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:'Oswald',sans-serif;
  font-size:0.9rem;
  text-transform:uppercase;
  letter-spacing:0.04em;
  color:var(--gold);
  margin-top:8px;
  transition:gap .2s var(--ease);
}
.view-all:hover{gap:14px;color:var(--gold-light);}
.view-all svg{width:16px;height:16px;}

/* clickable cards (services/projects listing pages) */
a.service-card, a.project-card{display:block;}

/* ---------- Simple content page (Why Choose Us / About full pages) ---------- */
.content-section{padding:80px 0;}

/* ---------- Responsive additions ---------- */
@media (max-width:1080px){
  .detail__grid{grid-template-columns:1fr;}
  .detail__sidebar{position:static;}
  .related__grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:640px){
  .page-hero{padding:120px 0 50px;}
  .includes-list{grid-template-columns:1fr;}
  .detail__gallery{grid-template-columns:1fr;}
  .related__grid{grid-template-columns:1fr;}
}