/* ============================================================
   THE MODERN CONSTRUCTIONS — Design system
   Palette: deep survey-blue navy + steel accent, on warm white
   Type: Space Grotesk (display) / Inter (body) / IBM Plex Mono (data, labels)
   Signature motif: blueprint grid + surveyor crosshair marks
   ============================================================ */

:root{
  --navy-950:#081729;
  --navy-900:#0a1f38;
  --navy-800:#123259;
  --navy-700:#1a4270;
  --steel-500:#3d6ea5;
  --steel-400:#5c8cc4;
  --steel-200:#b7d0ec;
  --steel-100:#e4edf7;
  --ink:#0f1f33;
  --gray-600:#5c6773;
  --gray-300:#dbe2ea;
  --gray-100:#f4f6f9;
  --white:#ffffff;
  --line:#22405f;

  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;

  --container: 1240px;
  --radius: 2px;
  --ease: cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  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{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  margin:0;
  color:var(--navy-900);
  line-height:1.12;
  letter-spacing:-0.01em;
}
p{ margin:0; }
button{ font-family:inherit; cursor:pointer; }

:focus-visible{
  outline:2px solid var(--steel-400);
  outline-offset:3px;
}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- eyebrow / mono labels ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--steel-500);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.eyebrow::before{
  content:'';
  width:22px;
  height:1px;
  background:var(--steel-500);
  display:inline-block;
}
.eyebrow.on-dark{ color:var(--steel-200); }
.eyebrow.on-dark::before{ background:var(--steel-200); }

/* ---------- blueprint grid texture (signature motif) ---------- */
.blueprint{
  position:relative;
  background-color:var(--navy-900);
  background-image:
    linear-gradient(rgba(183,208,236,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(183,208,236,.07) 1px, transparent 1px);
  background-size:44px 44px;
}
.blueprint::after{
  content:'';
  position:absolute; inset:0;
  background:radial-gradient(ellipse at 20% 0%, rgba(92,140,196,.18), transparent 60%);
  pointer-events:none;
}

/* surveyor crosshair mark, used as a decorative corner accent */
.crosshair{ position:absolute; width:26px; height:26px; opacity:.55; }
.crosshair::before,.crosshair::after{
  content:''; position:absolute; background:var(--steel-200);
}
.crosshair::before{ width:100%; height:1px; top:50%; }
.crosshair::after{ height:100%; width:1px; left:50%; }
.crosshair .dot{
  position:absolute; left:50%; top:50%; width:5px; height:5px;
  border:1px solid var(--steel-200); border-radius:50%;
  transform:translate(-50%,-50%);
}

/* ============ HEADER ============ */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  padding:20px 0;
  transition:background .35s var(--ease), padding .35s var(--ease), box-shadow .35s var(--ease);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.site-header.solid{
  background:rgba(10,31,56,.96);
  backdrop-filter:blur(6px);
  padding:14px 0;
  box-shadow:0 8px 24px rgba(8,23,41,.18);
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:42px; height:42px; flex:none;
}
.brand-text{ line-height:1.15; }
.brand-text .name{
  font-family:var(--font-display); font-weight:700; font-size:16.5px;
  color:var(--white); letter-spacing:.01em;
}
.brand-text .sub{
  font-family:var(--font-mono); font-size:9.5px; letter-spacing:.12em;
  color:var(--steel-200); text-transform:uppercase;
}

.main-nav{ display:flex; align-items:center; gap:34px; }
.main-nav a{
  font-family:var(--font-mono); font-size:13px; letter-spacing:.04em;
  color:var(--steel-100); position:relative; padding:4px 0;
}
.main-nav a::after{
  content:''; position:absolute; left:0; bottom:-2px; width:0; height:1px;
  background:var(--steel-400); transition:width .25s var(--ease);
}
.main-nav a:hover::after, .main-nav a.active::after{ width:100%; }
.main-nav a.active{ color:var(--white); }

.header-right{ display:flex; align-items:center; gap:26px; }
.header-phone{
  font-family:var(--font-mono); font-size:13px; color:var(--steel-100);
  white-space:nowrap;
}
.nav-toggle{
  display:none; background:none; border:1px solid var(--line); color:var(--white);
  width:40px; height:40px; align-items:center; justify-content:center;
}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.08em; text-transform:uppercase;
  padding:15px 26px; border:1px solid transparent; border-radius:var(--radius);
  transition:transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg, var(--steel-500), var(--steel-400));
  color:var(--white);
}
.btn-primary:hover{ transform:translateY(-2px); }
.btn-outline{
  border-color:rgba(255,255,255,.35); color:var(--white);
}
.btn-outline:hover{ border-color:var(--white); background:rgba(255,255,255,.06); }
.btn-outline.dark{ border-color:var(--navy-800); color:var(--navy-900); }
.btn-outline.dark:hover{ background:var(--navy-900); color:var(--white); }
.btn-arrow{ transition:transform .25s var(--ease); }
.btn:hover .btn-arrow{ transform:translateX(4px); }

/* ============ HERO ============ */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:center;
  color:var(--white); overflow:hidden;
}
.hero-media{ position:absolute; inset:0; z-index:0; }
.hero-media img{
  width:100%; height:100%; object-fit:cover;
  filter: grayscale(.15) brightness(.62) saturate(1.05);
}
.hero-media::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(8,23,41,.55) 0%, rgba(8,23,41,.35) 40%, rgba(8,23,41,.85) 100%),
             linear-gradient(90deg, rgba(8,23,41,.55) 0%, transparent 55%);
}
.hero-content{ position:relative; z-index:1; padding-top:80px; }
.hero h1{
  font-size:clamp(38px, 6vw, 74px);
  color:var(--white);
  max-width:16ch;
}
.hero .lede{
  font-family:var(--font-mono); font-size:14px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--steel-200); margin-top:22px;
}
.hero .cta-row{ margin-top:40px; display:flex; gap:16px; flex-wrap:wrap; }
.hero-stats{
  position:absolute; bottom:0; left:0; right:0; z-index:1;
  border-top:1px solid rgba(255,255,255,.16);
  background:rgba(8,23,41,.55); backdrop-filter:blur(3px);
}
.hero-stats .container{
  display:grid; grid-template-columns:repeat(2,1fr); max-width:520px;
}
.hero-stats .stat{
  padding:22px 0; text-align:left; border-left:1px solid rgba(255,255,255,.14);
  padding-left:20px;
}
.hero-stats .stat:first-child{ border-left:none; padding-left:0; }
.hero-stats .num{ font-family:var(--font-display); font-size:26px; color:var(--white); }
.hero-stats .label{ font-family:var(--font-mono); font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel-200); margin-top:4px; }

/* generic page hero (interior pages) */
.page-hero{
  position:relative; color:var(--white); padding:200px 0 110px;
  overflow:hidden;
}
.page-hero .container{ position:relative; z-index:1; }
.page-hero h1{ color:var(--white); font-size:clamp(32px,5vw,54px); max-width:20ch; }
.page-hero .lede{ max-width:56ch; margin-top:20px; color:var(--steel-100); font-size:16px; font-family:var(--font-body); }
.page-hero-media{ position:absolute; inset:0; z-index:0; }
.page-hero-media img{ width:100%; height:100%; object-fit:cover; filter:grayscale(.2) brightness(.5); }
.page-hero-media::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(8,23,41,.72), rgba(8,23,41,.92));
}
.crumb{
  font-family:var(--font-mono); font-size:11.5px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--steel-200); margin-bottom:18px;
}
.crumb a{ color:var(--steel-200); border-bottom:1px solid rgba(183,208,236,.4); }
.crumb a:hover{ color:var(--white); }

/* ============ SECTIONS ============ */
section{ position:relative; }
.section-pad{ padding:110px 0; }
.section-pad-sm{ padding:70px 0; }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(28px,3.6vw,42px); }
.section-head .desc{ margin-top:18px; color:var(--gray-600); font-size:16px; max-width:56ch; }
.split{
  display:grid; grid-template-columns:1fr 1fr; gap:70px; align-items:center;
}
.bg-alt{ background:var(--gray-100); }
.bg-navy{ background:var(--navy-900); color:var(--white); }
.bg-navy h2, .bg-navy h3{ color:var(--white); }
.bg-navy .desc{ color:var(--steel-100); }

/* about visual */
.about-figure{ position:relative; }
.about-figure img{ border-radius:var(--radius); }
.about-figure .frame{
  position:absolute; inset:18px -18px -18px 18px; border:1px solid var(--steel-400);
  z-index:-1;
}
.about-stats{ display:grid; grid-template-columns:repeat(2,1fr); gap:28px; margin-top:44px; max-width:420px; }
.about-stats .num{ font-family:var(--font-display); font-size:34px; color:var(--navy-900); }
.about-stats .label{ font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase; color:var(--gray-600); margin-top:6px; }
.about-values{ display:flex; flex-direction:column; gap:22px; margin-top:30px; }
.about-values li{ display:flex; gap:16px; align-items:flex-start; }
.about-values .mk{
  font-family:var(--font-mono); font-size:12px; color:var(--steel-500);
  border:1px solid var(--gray-300); width:30px; height:30px; flex:none;
  display:flex; align-items:center; justify-content:center; margin-top:2px;
}
.about-values h4{ font-size:16.5px; }
.about-values p{ color:var(--gray-600); font-size:14.5px; margin-top:4px; }

/* services cards (home preview + services page) */
.service-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:2px;
  background:var(--gray-300);
  border:1px solid var(--gray-300);
}
.service-card{
  background:var(--white); padding:44px 38px; position:relative;
  transition:background .3s var(--ease);
}
.service-card:hover{ background:var(--gray-100); }
.service-card .idx{
  font-family:var(--font-mono); font-size:12px; color:var(--steel-500);
}
.service-card h3{ font-size:22px; margin-top:18px; }
.service-card p{ color:var(--gray-600); font-size:14.5px; margin-top:14px; }
.service-card .go{
  margin-top:26px; display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase;
  color:var(--navy-900); border-bottom:1px solid var(--navy-900); padding-bottom:2px;
}
.service-card .go svg{ transition:transform .25s var(--ease); }
.service-card:hover .go svg{ transform:translateX(4px); }

/* service detail page */
.detail-scope{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-top:20px; }
.detail-scope li{
  border:1px solid var(--gray-300); padding:22px 24px; font-size:14.5px; color:var(--ink);
  display:flex; gap:14px; align-items:flex-start;
}
.detail-scope li .n{ font-family:var(--font-mono); font-size:12px; color:var(--steel-500); flex:none; }
.detail-process{ counter-reset:step; margin-top:10px; }
.detail-process li{
  counter-increment:step;
  display:grid; grid-template-columns:56px 1fr; gap:22px;
  padding:26px 0; border-top:1px solid var(--gray-300);
}
.detail-process li:last-child{ border-bottom:1px solid var(--gray-300); }
.detail-process li::before{
  content:counter(step, decimal-leading-zero);
  font-family:var(--font-mono); font-size:15px; color:var(--steel-500);
}
.detail-process h4{ font-size:17px; }
.detail-process p{ color:var(--gray-600); font-size:14.5px; margin-top:6px; }
.other-services{ display:flex; gap:16px; flex-wrap:wrap; margin-top:22px; }
.other-services a{
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.04em; text-transform:uppercase;
  border:1px solid var(--gray-300); padding:12px 18px; color:var(--navy-900);
}
.other-services a:hover{ border-color:var(--navy-900); }

/* portfolio */
.filter-bar{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom:48px; }
.filter-bar button{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase;
  border:1px solid var(--gray-300); background:none; color:var(--gray-600);
  padding:11px 18px;
  transition:all .2s var(--ease);
}
.filter-bar button.active, .filter-bar button:hover{
  border-color:var(--navy-900); color:var(--navy-900); background:var(--gray-100);
}
.portfolio-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:28px;
}
.p-card{ position:relative; overflow:hidden; }
.p-card .imgwrap{ overflow:hidden; aspect-ratio:4/5; }
.p-card img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.p-card:hover img{ transform:scale(1.06); }
.p-card figcaption{
  margin-top:16px; display:flex; justify-content:space-between; align-items:baseline; gap:10px;
}
.p-card .pname{ font-family:var(--font-display); font-size:17px; }
.p-card .ptag{ font-family:var(--font-mono); font-size:10.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--steel-500); }

/* CTA band */
.cta-band{ padding:90px 0; position:relative; }
.cta-band .container{ position:relative; z-index:1; text-align:center; }
.cta-band h2{ color:var(--white); font-size:clamp(26px,3.4vw,40px); max-width:22ch; margin:0 auto; }
.cta-band .btn-row{ margin-top:34px; display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* contact */
.contact-grid{ display:grid; grid-template-columns:1.1fr 1fr; gap:70px; align-items:start; }
.info-card{ border:1px solid var(--gray-300); padding:32px; margin-bottom:20px; }
.info-card .k{ font-family:var(--font-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel-500); }
.info-card .v{ margin-top:10px; font-size:15.5px; }
.info-card a.v{ display:block; }
.social-row{ display:flex; gap:14px; margin-top:8px; }
.social-row a{
  width:38px; height:38px; border:1px solid var(--gray-300); display:flex; align-items:center; justify-content:center;
}
.social-row a:hover{ border-color:var(--navy-900); }

.form-card{ background:var(--gray-100); padding:44px; border:1px solid var(--gray-300); }
.field{ margin-bottom:20px; }
.field label{ display:block; font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase; color:var(--gray-600); margin-bottom:8px; }
.field input, .field select, .field textarea{
  width:100%; border:1px solid var(--gray-300); background:var(--white);
  padding:14px 16px; font-family:var(--font-body); font-size:14.5px; color:var(--ink);
  border-radius:var(--radius);
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-color:var(--steel-400); }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-note{ font-size:12.5px; color:var(--gray-600); margin-top:14px; }
.form-status{ margin-top:16px; font-family:var(--font-mono); font-size:13px; }
.form-status.ok{ color:#1a7a4c; }
.form-status.err{ color:#b3392c; }
.map-card{ margin-top:20px; border:1px solid var(--gray-300); aspect-ratio:16/10; overflow:hidden; }
.map-card iframe{ width:100%; height:100%; border:0; }

/* ============ FOOTER ============ */
.site-footer{ background:var(--navy-950); color:var(--steel-100); padding:80px 0 30px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:56px; border-bottom:1px solid var(--line); }
.footer-brand .brand-text .name{ color:var(--white); }
.footer-brand p{ margin-top:18px; color:var(--steel-200); font-size:14px; max-width:32ch; }
.footer-col h5{ font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--steel-400); margin-bottom:18px; }
.footer-col li{ margin-bottom:12px; font-size:14px; }
.footer-col a:hover{ color:var(--white); }
.footer-bottom{ padding-top:26px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-family:var(--font-mono); font-size:11.5px; color:var(--steel-400); }

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  .split, .contact-grid{ grid-template-columns:1fr; gap:40px; }
  .service-grid{ grid-template-columns:1fr; }
  .portfolio-grid{ grid-template-columns:repeat(2,1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .hero-stats .container{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:760px){
  .main-nav, .header-phone{ display:none; }
  .nav-toggle{ display:flex; }
  .main-nav.open{
    display:flex; position:fixed; inset:0; top:0; z-index:99;
    flex-direction:column; justify-content:center; align-items:flex-start; gap:26px;
    background:var(--navy-950); padding:40px;
  }
  .main-nav.open a{ font-size:20px; }
  .detail-scope{ grid-template-columns:1fr; }
  .portfolio-grid{ grid-template-columns:1fr; }
  .field-row{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  .section-pad{ padding:76px 0; }
}