/* ============================================================
   КРОНБУД — будівельно-інжинірингова компанія
   Design ledger (territory):
   1. Layout      : bold industrial corporate / split-stage, hard grid
   2. Fonts       : Archivo (headings, condensed grotesk) + Inter (body)
   3. Color logic : dark-default — graphite #15181D + safety-orange #FF6A00
   4. Radius      : sharp/dense (4–10px), technical
   5. Motion      : delicate fade+rise reveal on scroll (reduced-motion safe)
   6. Signature   : oversized numeric counters + hazard diagonal stripes
   ============================================================ */

:root{
  /* palette */
  --graphite:#15181D;
  --graphite-2:#1C2026;
  --ink:#1C1F24;
  --orange:#FF6A00;
  --orange-2:#FF8534;
  --concrete:#EEF0F2;
  --concrete-2:#E2E6EA;
  --line:#2A2F37;
  --line-light:#D8DCE1;
  --white:#FFFFFF;
  --muted:#8A929C;
  --muted-dark:#5A6470;

  /* type */
  --f-head:"Archivo",system-ui,sans-serif;
  --f-body:"Inter",system-ui,sans-serif;

  /* radius */
  --r-xs:4px;
  --r-sm:6px;
  --r-md:10px;

  /* spacing rhythm */
  --pad-x:clamp(20px,5vw,80px);
  --maxw:1280px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}

body{
  margin:0;
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.6;
  color:var(--ink);
  background:var(--white);
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--f-head);
  font-weight:800;
  line-height:1.02;
  letter-spacing:-0.02em;
  margin:0;
  text-transform:uppercase;
}

a{color:inherit;text-decoration:none;}
img,svg{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:var(--pad-x);
  padding-right:var(--pad-x);
}

/* hazard stripe utility (CSS gradient — no images) */
.hazard{
  background-image:repeating-linear-gradient(
    -45deg,
    var(--orange) 0,
    var(--orange) 14px,
    var(--graphite) 14px,
    var(--graphite) 28px
  );
}

/* ============ TOP BAR ============ */
.topbar{
  position:sticky;
  top:0;
  z-index:50;
  background:var(--graphite);
  border-bottom:1px solid var(--line);
}
.topbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:64px;
  gap:16px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--f-head);
  font-weight:800;
  font-size:22px;
  letter-spacing:-0.01em;
  color:var(--white);
  text-transform:uppercase;
}
.brand__mark{
  width:30px;height:30px;flex:0 0 auto;
}
.nav{display:flex;align-items:center;gap:6px;}
.nav a{
  color:var(--concrete);
  font-size:14px;
  font-weight:600;
  padding:10px 12px;
  border-radius:var(--r-xs);
  transition:color .15s,background .15s;
}
.nav a:hover{color:var(--white);background:var(--graphite-2);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--f-head);
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.02em;
  font-size:14px;
  padding:12px 18px;
  min-height:44px;
  border-radius:var(--r-xs);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .12s,background .15s,border-color .15s,color .15s;
}
.btn:active{transform:translateY(1px);}
.btn--orange{background:var(--orange);color:var(--graphite);}
.btn--orange:hover{background:var(--orange-2);}
.btn--ghost{background:transparent;color:var(--white);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange);}
.btn--dark{background:var(--graphite);color:var(--white);}
.btn--dark:hover{background:var(--ink);}

.burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:var(--graphite-2);
  border-radius:var(--r-xs);
  cursor:pointer;
  align-items:center;justify-content:center;
}
.burger svg{stroke:var(--white);}

/* ============ HERO ============ */
.hero{
  position:relative;
  background:var(--graphite);
  color:var(--white);
  overflow:hidden;
}
.hero__bg{
  position:absolute;inset:0;
  opacity:.5;
  pointer-events:none;
}
.hero__inner{
  position:relative;
  padding-top:clamp(56px,9vw,110px);
  padding-bottom:clamp(56px,9vw,110px);
}
.hero__eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--f-head);
  text-transform:uppercase;
  letter-spacing:.14em;
  font-size:12px;
  font-weight:700;
  color:var(--orange);
  margin-bottom:22px;
}
.hero__eyebrow::before{
  content:"";width:34px;height:3px;background:var(--orange);display:inline-block;
}
.hero h1{
  font-size:clamp(38px,8vw,86px);
  max-width:14ch;
}
.hero h1 .accent{color:var(--orange);}
.hero__sub{
  margin-top:24px;
  max-width:54ch;
  font-size:clamp(16px,2.3vw,19px);
  color:var(--concrete);
  line-height:1.6;
}
.hero__cta{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero__strip{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:clamp(40px,6vw,64px);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  overflow:hidden;
  background:var(--graphite-2);
}
.hero__stat{
  flex:1 1 140px;
  padding:22px 24px;
  border-right:1px solid var(--line);
}
.hero__stat:last-child{border-right:none;}
.hero__stat b{
  display:block;
  font-family:var(--f-head);
  font-weight:800;
  font-size:clamp(30px,5vw,44px);
  color:var(--white);
  line-height:1;
}
.hero__stat span{
  display:block;
  margin-top:8px;
  font-size:13px;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.04em;
}

/* ============ SECTION SHELL ============ */
.section{padding:clamp(56px,8vw,104px) 0;}
.section--concrete{background:var(--concrete);}
.section--graphite{background:var(--graphite);color:var(--white);}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:clamp(32px,5vw,52px);
}
.section__tag{
  font-family:var(--f-head);
  text-transform:uppercase;
  letter-spacing:.14em;
  font-size:12px;
  font-weight:700;
  color:var(--orange);
  display:flex;align-items:center;gap:10px;
}
.section__tag::before{content:"";width:28px;height:3px;background:var(--orange);}
.section h2{
  font-size:clamp(28px,5vw,52px);
  margin-top:14px;
  max-width:18ch;
}
.section__lead{
  max-width:46ch;
  color:var(--muted-dark);
  font-size:16px;
}
.section--graphite .section__lead{color:var(--concrete);}

/* ============ SERVICES ============ */
.services{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line-light);
  border:1px solid var(--line-light);
  border-radius:var(--r-md);
  overflow:hidden;
}
.service{
  background:var(--white);
  padding:32px 28px 36px;
  display:flex;
  flex-direction:column;
  min-height:280px;
  transition:background .18s;
}
.service:hover{background:#FBFCFD;}
.service__num{
  font-family:var(--f-head);
  font-weight:800;
  font-size:13px;
  color:var(--orange);
  letter-spacing:.1em;
}
.service__ic{
  width:48px;height:48px;
  margin:18px 0 22px;
  color:var(--graphite);
}
.service h3{
  font-size:21px;
  margin-bottom:12px;
  line-height:1.1;
}
.service p{
  font-size:14.5px;
  color:var(--muted-dark);
  margin:0;
  flex:1;
}
.service__more{
  margin-top:18px;
  font-family:var(--f-head);
  font-weight:700;
  font-size:13px;
  text-transform:uppercase;
  letter-spacing:.04em;
  color:var(--graphite);
  display:inline-flex;align-items:center;gap:8px;
}
.service:hover .service__more{color:var(--orange);}

/* ============ PROJECTS ============ */
.projects{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.project{
  border:1px solid var(--line-light);
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--white);
  display:flex;
  flex-direction:column;
}
.project__ph{
  position:relative;
  aspect-ratio:4/3;
  background:linear-gradient(135deg,#23272F 0%,#15181D 100%);
  overflow:hidden;
}
.project__ph svg{position:absolute;inset:0;width:100%;height:100%;}
.project__badge{
  position:absolute;
  top:12px;left:12px;
  z-index:2;
  font-family:var(--f-head);
  font-weight:700;
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.06em;
  padding:6px 10px;
  border-radius:var(--r-xs);
}
.badge--done{background:var(--orange);color:var(--graphite);}
.badge--wip{background:rgba(255,255,255,.12);color:var(--white);border:1px solid rgba(255,255,255,.3);}
.project__caption{
  position:absolute;
  left:14px;bottom:14px;right:14px;
  z-index:2;
}
.project__caption b{
  display:block;
  font-family:var(--f-head);
  font-weight:800;
  font-size:18px;
  color:var(--white);
  text-transform:uppercase;
  line-height:1.05;
}
.project__caption span{
  font-size:12.5px;
  color:var(--concrete);
}
.project__spec{
  display:flex;
  flex-wrap:wrap;
}
.project__spec div{
  flex:1 1 33%;
  padding:14px 16px;
  border-top:1px solid var(--line-light);
  border-right:1px solid var(--line-light);
}
.project__spec div:last-child{border-right:none;}
.project__spec dt{
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.05em;
  color:var(--muted);
  margin-bottom:4px;
}
.project__spec dd{
  margin:0;
  font-family:var(--f-head);
  font-weight:700;
  font-size:15px;
  color:var(--graphite);
}

/* ============ PROCESS ============ */
.process{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:18px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:28px 22px;
  background:var(--graphite-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
}
.step__n{
  font-family:var(--f-head);
  font-weight:800;
  font-size:46px;
  color:var(--orange);
  line-height:1;
  opacity:.9;
}
.step h3{
  margin:16px 0 10px;
  font-size:18px;
  color:var(--white);
}
.step p{
  margin:0;
  font-size:14px;
  color:var(--muted);
}
.step__arrow{
  position:absolute;
  top:34px;right:-13px;
  z-index:3;
  color:var(--orange);
}

/* ============ COUNTERS ============ */
.counters{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.counter{
  background:var(--graphite);
  padding:38px 28px;
  text-align:left;
}
.counter b{
  display:block;
  font-family:var(--f-head);
  font-weight:800;
  font-size:clamp(40px,7vw,72px);
  color:var(--white);
  line-height:1;
}
.counter b .u{color:var(--orange);font-size:.5em;vertical-align:super;margin-left:2px;}
.counter span{
  display:block;
  margin-top:14px;
  font-size:14px;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.04em;
}

/* ============ ABOUT + CERTS ============ */
.about{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:clamp(32px,5vw,64px);
  align-items:start;
}
.about__text p{
  color:var(--muted-dark);
  font-size:16px;
  margin:0 0 16px;
}
.about__text p:first-of-type{
  font-size:18px;
  color:var(--ink);
}
.certs{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.cert{
  background:var(--white);
  border:1px solid var(--line-light);
  border-left:4px solid var(--orange);
  border-radius:var(--r-sm);
  padding:18px 18px;
}
.cert b{
  display:block;
  font-family:var(--f-head);
  font-weight:700;
  font-size:14px;
  text-transform:uppercase;
  color:var(--graphite);
  letter-spacing:.02em;
}
.cert span{
  font-size:13px;
  color:var(--muted-dark);
}

/* ============ CONTACT ============ */
.contact{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(28px,4vw,48px);
  align-items:start;
}
.contact__info{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.contact__row{
  display:flex;
  gap:14px;
  align-items:flex-start;
}
.contact__row .ic{
  width:42px;height:42px;flex:0 0 auto;
  background:var(--graphite-2);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  color:var(--orange);
}
.contact__row dt{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);}
.contact__row dd{margin:2px 0 0;font-size:17px;color:var(--white);font-weight:600;}
.contact__row a:hover{color:var(--orange);}

.form{
  background:var(--graphite-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:clamp(22px,3vw,32px);
}
.form h3{color:var(--white);font-size:22px;margin-bottom:6px;}
.form p.note{color:var(--muted);font-size:13.5px;margin:0 0 20px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--concrete);
  margin-bottom:7px;
}
.field input,.field textarea,.field select{
  width:100%;
  font-family:var(--f-body);
  font-size:16px; /* ≥16 to avoid iOS zoom */
  color:var(--white);
  background:var(--graphite);
  border:1px solid var(--line);
  border-radius:var(--r-xs);
  padding:13px 14px;
  min-height:48px;
}
.field textarea{min-height:96px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-dark);}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 2px rgba(255,106,0,.25);
}
.form__ok{
  display:none;
  margin-top:14px;
  padding:12px 14px;
  background:rgba(255,106,0,.12);
  border:1px solid var(--orange);
  border-radius:var(--r-xs);
  color:var(--orange-2);
  font-size:14px;
}
.form__ok.show{display:block;}

.map{
  margin-top:clamp(32px,4vw,48px);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  line-height:0;
}
.map iframe{
  width:100%;
  height:clamp(280px,40vw,420px);
  border:0;
  filter:grayscale(.3) contrast(1.05);
}

/* ============ FOOTER ============ */
.footer{
  background:var(--ink);
  color:var(--concrete);
  border-top:4px solid var(--orange);
}
.footer__top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:32px;
  padding-top:clamp(40px,5vw,64px);
  padding-bottom:clamp(32px,4vw,48px);
}
.footer .brand{margin-bottom:16px;}
.footer p{font-size:14px;color:var(--muted);max-width:38ch;margin:0 0 8px;}
.footer h4{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--white);
  margin-bottom:14px;
}
.footer ul li{margin-bottom:9px;}
.footer ul a{font-size:14px;color:var(--concrete);}
.footer ul a:hover{color:var(--orange);}
.footer__bar{
  border-top:1px solid var(--line);
  padding:18px 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  align-items:center;
}
.footer__bar small{color:var(--muted);font-size:12.5px;}
.footer__bar a{color:var(--orange);font-weight:600;}

/* ============ REVEAL MOTION ============ */
.reveal{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
}

/* ============ RESPONSIVE ============ */
@media (max-width:1080px){
  .process{grid-template-columns:repeat(3,1fr);}
  .step__arrow{display:none;}
  .footer__top{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav{
    position:fixed;
    inset:64px 0 auto 0;
    flex-direction:column;
    align-items:stretch;
    background:var(--graphite);
    border-bottom:1px solid var(--line);
    padding:12px var(--pad-x) 18px;
    gap:4px;
    transform:translateY(-120%);
    transition:transform .25s ease;
    z-index:40;
  }
  .nav.open{transform:none;}
  .nav a{padding:14px 12px;font-size:16px;}
  .topbar .btn--orange{display:none;}
  .nav .nav__cta{display:inline-flex;margin-top:8px;}
  .burger{display:flex;}
  .services{grid-template-columns:repeat(2,1fr);}
  .projects{grid-template-columns:repeat(2,1fr);}
  .counters{grid-template-columns:repeat(2,1fr);}
  .about{grid-template-columns:1fr;}
  .contact{grid-template-columns:1fr;}
}
@media (min-width:901px){
  .nav__cta{display:none;}
}
@media (max-width:640px){
  .services{grid-template-columns:1fr;}
  .projects{grid-template-columns:1fr;}
  .process{grid-template-columns:1fr;}
  .counters{grid-template-columns:1fr;}
  .certs{grid-template-columns:1fr;}
  .footer__top{grid-template-columns:1fr;gap:24px;}
  .section__head{flex-direction:column;align-items:flex-start;}
  .hero__stat{flex:1 1 50%;border-right:1px solid var(--line);}
  /* project spec → stack label:value */
  .project__spec div{flex:1 1 100%;border-right:none;}
}