/* =========================================================
   BOON-JET SERVICES NIG. LTD — design system
   Palette drawn from the brand mark: charcoal, navy, amber.
   Typographic pairing: Big Shoulders Display (condensed,
   architectural — built for skyline/structural headlines)
   with Work Sans for body copy and interface text.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders+Display:wght@500;600;700;800&family=Work+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root{
  --ink:        #14171b;   /* near-black charcoal */
  --charcoal:   #2b2f36;
  --charcoal-60:#575c64;
  --navy:       #0b2145;   /* brand navy, sampled from mark */
  --amber:      #c8912f;   /* brand amber, sampled from mark */
  --amber-deep: #a8741f;
  --amber-pale: #e7c07f;
  --paper:      #f4f1ea;
  --paper-dim:  #ece7dc;
  --concrete:   #8b867c;   /* warm secondary grey */
  --line:       #d8d2c4;   /* hairline rule colour on paper */
  --line-dark:  rgba(244,241,234,0.16);

  --font-display: 'Big Shoulders Display', 'Arial Narrow', sans-serif;
  --font-body: 'Work Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --sheet: 0;               /* incremented via inline style for section labels */
  --container: 1240px;
  --edge: clamp(20px, 5vw, 64px);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
[hidden]{ display: none !important; }

body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.02;
  margin: 0;
  color: var(--ink);
  text-transform: uppercase;
}

p{ margin: 0 0 1em; max-width: 62ch; }
p:last-child{ margin-bottom:0; }

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

@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-visible{
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- Sheet label (blueprint sheet-number motif) ---------- */
.sheet-label{
  display:flex;
  align-items:center;
  gap: 14px;
  margin-bottom: 28px;
}
.sheet-label .code{
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--amber-deep);
}
.sheet-label .rule{
  flex: 1;
  height: 1px;
  background: var(--line);
}
.sheet-label .title{
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--concrete);
}
.on-dark .sheet-label .rule{ background: var(--line-dark); }
.on-dark .sheet-label .title{ color: #b9b6ad; }
.on-dark .sheet-label .code{ color: var(--amber-pale); }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 26px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn-primary{
  background: var(--amber);
  color: var(--ink);
}
.btn-primary:hover{ background: var(--amber-deep); color: var(--paper); }
.btn-outline{
  background: transparent;
  border-color: currentColor;
  color: inherit;
}
.btn-outline:hover{ background: var(--ink); color: var(--paper); border-color: var(--ink); }
.on-dark .btn-outline{ color: var(--paper); }
.on-dark .btn-outline:hover{ background: var(--paper); color: var(--ink); }
.btn-row{ display:flex; flex-wrap:wrap; gap: 14px; }

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content: space-between;
  height: 84px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height: 46px; width:auto; }
.brand .brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand .brand-text strong{
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 0.03em;
  color: var(--navy);
}
.brand .brand-text span{
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--concrete);
  text-transform: uppercase;
}

.main-nav{ display:flex; align-items:center; gap: 40px; }
.main-nav ul{ display:flex; gap: 30px; }
.main-nav a{
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--charcoal);
  padding: 6px 0;
  position: relative;
}
.main-nav a::after{
  content:"";
  position:absolute; left:0; right:100%; bottom:0;
  height:2px; background: var(--amber);
  transition: right .2s ease;
}
.main-nav a:hover::after, .main-nav a.active::after{ right:0; }
.main-nav a.active{ color: var(--navy); }

.nav-cta{ display:flex; align-items:center; gap:18px; }
.nav-cta .btn{ padding: 12px 20px; }

.nav-toggle{
  display:none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  align-items:center; justify-content:center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:18px; height:2px; background: var(--ink); position:relative;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

/* ---------- Hero (home) ---------- */
.hero{
  position: relative;
  min-height: 92vh;
  display:flex;
  align-items: flex-end;
  color: var(--paper);
  overflow:hidden;
  background: var(--ink);
}
.hero-media{ position:absolute; inset:0; }
.hero-media img{ width:100%; height:100%; object-fit: cover; }
.hero-media::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(15,17,20,0.35) 0%, rgba(15,17,20,0.55) 55%, rgba(12,13,15,0.92) 100%);
}
.hero-grid-overlay{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(244,241,234,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,241,234,0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  mix-blend-mode: overlay;
  opacity: .5;
}
.hero-frame{
  position:absolute; inset: clamp(16px,3vw,40px);
  border: 1px solid rgba(244,241,234,0.28);
  pointer-events:none;
}
.hero-frame::before, .hero-frame::after,
.hero-frame i::before, .hero-frame i::after{
  content:""; position:absolute; width:22px; height:22px;
  border: 2px solid var(--amber);
}
.hero-frame::before{ top:-2px; left:-2px; border-right:0; border-bottom:0; }
.hero-frame::after{ bottom:-2px; right:-2px; border-left:0; border-top:0; }

.hero-content{
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 0 var(--edge) 68px;
}
.hero-tag{
  display:inline-flex; align-items:center; gap:10px;
  font-size: 12.5px; letter-spacing:.16em; font-weight:600;
  color: var(--amber-pale); text-transform:uppercase;
  margin-bottom: 22px;
}
.hero-tag::before{ content:""; width:26px; height:1px; background: var(--amber); }
.hero h1{
  font-size: clamp(44px, 7.4vw, 104px);
  max-width: 16ch;
  color: var(--paper);
}
.hero .lede{
  margin-top: 22px;
  max-width: 48ch;
  font-size: 17px;
  color: #d9d5c9;
}
.hero .btn-row{ margin-top: 34px; }
.hero-meta{
  margin-top: 56px;
  display:flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid rgba(244,241,234,0.2);
  font-size: 13px;
  letter-spacing:.04em;
  color: #c9c5b9;
}
.hero-meta b{ display:block; font-family: var(--font-display); font-size: 15px; color: var(--paper); letter-spacing:.06em; margin-bottom:4px; }

/* ---------- Page hero (interior pages) ---------- */
.page-hero{
  position: relative;
  color: var(--paper);
  background: var(--ink);
  overflow: hidden;
}
.page-hero-media{ position:absolute; inset:0; }
.page-hero-media img{ width:100%; height:100%; object-fit:cover; opacity: .55; }
.page-hero-media::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(120deg, rgba(11,15,20,0.92) 20%, rgba(11,15,20,0.6) 100%);
}
.page-hero .container{
  position:relative; z-index:2;
  padding-top: 96px; padding-bottom: 96px;
}
.page-hero .crumb{
  font-size: 12.5px; letter-spacing:.14em; text-transform:uppercase;
  color: var(--amber-pale); margin-bottom: 18px; display:flex; gap:10px; align-items:center;
}
.page-hero h1{ font-size: clamp(38px, 6vw, 72px); color: var(--paper); max-width: 20ch; }
.page-hero .lede{ margin-top:18px; max-width: 56ch; color:#d9d5c9; font-size:16.5px; }

/* ---------- Sections ---------- */
.section{ padding: 108px 0; }
.section-tight{ padding: 88px 0; }
.section.on-dark{ background: var(--ink); color: var(--paper); }
.section.paper-dim{ background: var(--paper-dim); }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap: 40px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.section-head h2{ font-size: clamp(30px, 4vw, 48px); max-width: 16ch; }
.section-head .desc{ max-width: 42ch; color: var(--charcoal-60); font-size:15.5px; }
.on-dark .section-head .desc{ color:#c9c5b9; }

/* ---------- About / intro split ---------- */
.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}
.split .figure{ position:relative; }
.split .figure img{ width:100%; height: 100%; object-fit:cover; aspect-ratio: 4/5; }
.corner-mark{ position:relative; }
.corner-mark::before, .corner-mark::after{
  content:""; position:absolute; width:26px; height:26px; border: 2px solid var(--amber); z-index:2;
}
.corner-mark::before{ top:-10px; left:-10px; border-right:0; border-bottom:0; }
.corner-mark::after{ bottom:-10px; right:-10px; border-left:0; border-top:0; }

.eyebrow-plain{ font-size: 14px; color: var(--amber-deep); font-weight:700; letter-spacing:.04em; margin-bottom:14px; }
.lead-copy{ font-size: 19px; color: var(--ink); font-weight: 500; max-width: 46ch; }
.body-copy{ color: var(--charcoal-60); font-size: 15.5px; max-width: 52ch; }
.body-copy + .body-copy{ margin-top: -0.6em; }

/* ---------- Value / principle rows ---------- */
.rule-list{ border-top: 1px solid var(--line); }
.rule-list li{
  display:grid; grid-template-columns: 90px 1fr; gap: 28px;
  padding: 26px 0; border-bottom: 1px solid var(--line);
}
.rule-list .num{ font-family: var(--font-display); font-size: 20px; color: var(--amber-deep); }
.rule-list h4{ text-transform:none; font-size: 18px; font-family: var(--font-body); font-weight:700; margin-bottom:6px; }
.rule-list p{ color: var(--charcoal-60); font-size: 14.5px; margin:0; }

/* ---------- Services grid ---------- */
.service-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.service-card{
  background: var(--paper);
  padding: 40px 34px;
  display:flex; flex-direction:column; gap: 18px;
  min-height: 260px;
}
.service-card .icon{ width: 46px; height:46px; color: var(--amber-deep); }
.service-card .icon svg{ width:100%; height:100%; }
.service-card h3{ font-size: 22px; text-transform:none; font-family: var(--font-body); font-weight:700; }
.service-card p{ color: var(--charcoal-60); font-size: 14.5px; margin:0; }
.service-card .tag{
  margin-top:auto; font-size:11.5px; letter-spacing:.12em; color: var(--concrete); text-transform:uppercase;
}

/* full service list page */
.service-full{
  display:grid; grid-template-columns: 46px 1fr; gap: 26px;
  padding: 46px 0; border-bottom: 1px solid var(--line);
}
.service-full:first-of-type{ border-top: 1px solid var(--line); }
.service-full .idx{ font-family: var(--font-display); font-size: 20px; color: var(--amber-deep); padding-top:4px; }
.service-full .icon{ width: 44px; height:44px; color: var(--navy); margin-bottom:16px; }
.service-full .icon svg{ width:100%; height:100%; }
.service-full h3{ font-family: var(--font-body); font-size: 24px; text-transform:none; font-weight:700; margin-bottom: 10px; }
.service-full p{ color: var(--charcoal-60); font-size:15.5px; }
.service-full .points{ margin-top: 14px; display:flex; flex-wrap:wrap; gap: 10px; }
.service-full .points span{
  font-size: 12px; letter-spacing:.04em; padding: 7px 12px; border: 1px solid var(--line); color: var(--charcoal-60);
}

/* ---------- Project / photo grid ---------- */
.masonry{
  display:grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.masonry figure{ margin:0; position:relative; overflow:hidden; background: var(--charcoal); cursor: zoom-in; }
.masonry figure img{ width:100%; height:100%; object-fit:cover; transition: transform .5s ease; }
.masonry figure:hover img{ transform: scale(1.045); }
.masonry figcaption{
  position:absolute; left:0; right:0; bottom:0;
  padding: 16px 18px;
  background: linear-gradient(0deg, rgba(10,12,14,0.85), rgba(10,12,14,0));
  color: var(--paper);
  font-size: 13px; letter-spacing:.03em;
  opacity: 0; transform: translateY(6px);
  transition: opacity .25s ease, transform .25s ease;
}
.masonry figure:hover figcaption{ opacity:1; transform:none; }
.masonry .span-2{ grid-column: span 2; }
.masonry .span-3{ grid-column: span 3; }
.masonry .span-4{ grid-column: span 4; }
.masonry .tall{ aspect-ratio: 3/4; }
.masonry .wide{ aspect-ratio: 16/9; }
.masonry .square{ aspect-ratio: 1/1; }

.group-note{ display:flex; align-items:center; gap:12px; margin: 6px 0 30px; color: var(--concrete); font-size: 13.5px; }
.group-note svg{ width:16px; height:16px; flex-shrink:0; }

/* ---------- CTA band ---------- */
.cta-band{
  background: var(--navy);
  color: var(--paper);
  padding: 84px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before{
  content:"";
  position:absolute; inset:0;
  background-image: linear-gradient(rgba(244,241,234,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(244,241,234,0.05) 1px, transparent 1px);
  background-size: 54px 54px;
}
.cta-band .container{ position:relative; display:flex; justify-content:space-between; align-items:center; gap: 40px; flex-wrap:wrap; }
.cta-band h2{ font-size: clamp(28px, 3.6vw, 44px); max-width: 14ch; color: var(--paper); }
.cta-band .btn-outline{ color: var(--paper); }
.cta-band .btn-outline:hover{ background: var(--paper); color: var(--navy); }

/* ---------- Stats strip ---------- */
.strip{
  display:grid;
  grid-template-columns: repeat(4,1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.strip div{ padding: 30px var(--edge); border-left: 1px solid var(--line); }
.strip div:first-child{ border-left:none; }
.strip .label{ font-size: 12px; letter-spacing:.1em; color: var(--concrete); text-transform:uppercase; }
.strip .value{ font-family: var(--font-display); font-size: 26px; margin-top:6px; }

/* ---------- Process ---------- */
.process{ display:grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line); border:1px solid var(--line); }
.process div{ background: var(--paper); padding: 34px 28px; }
.process .n{ font-family: var(--font-display); font-size: 40px; color: var(--paper-dim); -webkit-text-stroke: 1.5px var(--amber-deep); color: transparent; }
.process h4{ font-family: var(--font-body); text-transform:none; font-size:17px; font-weight:700; margin: 14px 0 8px; }
.process p{ color: var(--charcoal-60); font-size: 14px; margin:0; }

/* ---------- Contact page ---------- */
.contact-grid{ display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 72px; }
.info-card{ border: 1px solid var(--line); padding: 34px; margin-bottom: 20px; }
.info-card h4{ font-family: var(--font-body); text-transform:none; font-size:13px; letter-spacing:.1em; text-transform:uppercase; color:var(--concrete); margin-bottom: 10px; }
.info-card p{ font-size: 17px; font-weight:600; margin:0; }
.info-card a:hover{ color: var(--amber-deep); }
.hours-table{ width:100%; border-collapse:collapse; }
.hours-table td{ padding: 9px 0; font-size: 14.5px; border-bottom: 1px solid var(--line); }
.hours-table td:last-child{ text-align:right; color: var(--charcoal-60); }

.field{ margin-bottom: 22px; }
.field label{ display:block; font-size:12.5px; letter-spacing:.08em; text-transform:uppercase; color: var(--concrete); margin-bottom: 8px; }
.field input, .field select, .field textarea{
  width:100%; border:none; border-bottom: 1px solid var(--line);
  background: transparent; padding: 12px 2px; font-family: var(--font-body); font-size: 15.5px; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-bottom-color: var(--amber); }
.field textarea{ resize: vertical; min-height: 110px; }
.form-note{ font-size: 12.5px; color: var(--concrete); margin-top: 20px; }
.map-frame{ border:1px solid var(--line); margin-top: 28px; filter: grayscale(0.15) contrast(1.05); }
.map-frame iframe{ width:100%; height: 260px; border:0; display:block; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: #c9c5b9; padding-top: 80px; }
.footer-grid{
  display:grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 48px;
  padding-bottom: 56px; border-bottom: 1px solid var(--line-dark);
}
.footer-brand{ display:flex; align-items:center; gap:12px; margin-bottom: 20px; }
.footer-brand img{ height:40px; }
.footer-brand strong{ font-family: var(--font-display); font-size:17px; letter-spacing:.03em; color: var(--paper); }
.site-footer h5{
  font-size: 12.5px; letter-spacing:.12em; text-transform:uppercase; color: var(--paper); margin-bottom: 20px; font-weight:700;
}
.site-footer li{ margin-bottom: 11px; font-size: 14.5px; }
.site-footer a:hover{ color: var(--amber-pale); }
.footer-bottom{
  padding: 26px 0 34px;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap: 12px;
  font-size: 13px; color: #8b8880;
}
.footer-bottom .credit{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.footer-bottom .credit a{ color: #c9c5b9; font-weight:600; }
.footer-bottom .credit a:hover{ color: var(--amber-pale); }

/* ---------- Lightbox ---------- */
.lightbox{
  position: fixed; inset:0; z-index: 1000;
  background: rgba(10,11,13,0.94);
  display:none; align-items:center; justify-content:center; padding: 5vh 4vw;
}
.lightbox.open{ display:flex; }
.lightbox img{ max-width: 100%; max-height: 88vh; object-fit:contain; }
.lightbox .lb-caption{ position:absolute; bottom: 28px; left:0; right:0; text-align:center; color:#d9d5c9; font-size:13.5px; letter-spacing:.03em; }
.lightbox .lb-close{
  position:absolute; top: 26px; right: 30px; width:44px; height:44px;
  border:1px solid rgba(244,241,234,0.3); background:transparent; color: var(--paper); cursor:pointer;
  font-size: 22px; line-height:1;
}
.lightbox .lb-close:hover{ border-color: var(--amber); color: var(--amber); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1080px){
  .split{ grid-template-columns: 1fr; gap: 44px; }
  .service-grid{ grid-template-columns: repeat(2,1fr); }
  .process{ grid-template-columns: repeat(2,1fr); }
  .strip{ grid-template-columns: repeat(2,1fr); }
  .strip div:nth-child(3){ border-left:none; }
  .contact-grid{ grid-template-columns: 1fr; gap: 48px; }
  .footer-grid{ grid-template-columns: 1fr 1fr; row-gap: 40px; }
}

@media (max-width: 860px){
  .main-nav{ display:none; }
  .nav-toggle{ display:flex; }
  .nav-cta .btn-outline{ display:none; }
  .masonry{ grid-template-columns: repeat(2,1fr); }
  .masonry .span-2, .masonry .span-3, .masonry .span-4{ grid-column: span 2; }
  .section{ padding: 76px 0; }
  .hero{ min-height: 100vh; }
}

@media (max-width: 480px){
  .site-header .container{ height: 70px; }
  .brand{ gap: 8px; min-width: 0; }
  .brand img{ height: 32px; flex-shrink: 0; }
  .brand .brand-text{ min-width: 0; }
  .brand .brand-text strong{ font-size: 14px; white-space: nowrap; }
  .brand .brand-text span{ display: none; }
  .nav-cta{ gap: 8px; }
  .nav-cta .btn-primary{ padding: 9px 13px; font-size: 12px; }
  .nav-toggle{ width: 36px; height: 36px; flex-shrink: 0; }
  .mobile-nav{ inset: 70px 0 0 0; }
}

@media (max-width: 640px){
  .service-grid{ grid-template-columns: 1fr; }
  .service-full{ grid-template-columns: 1fr; }
  .rule-list li{ grid-template-columns: 50px 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .strip{ grid-template-columns: 1fr; }
  .strip div{ border-left:none; border-top:1px solid var(--line); }
  .strip div:first-child{ border-top:none; }
  .masonry{ grid-template-columns: 1fr; }
  .masonry .span-2, .masonry .span-3, .masonry .span-4{ grid-column: span 1; }
  .cta-band .container{ flex-direction:column; align-items:flex-start; }
}

/* Mobile nav drawer */
.mobile-nav{
  position: fixed; inset: 84px 0 0 0; z-index: 99;
  background: var(--paper);
  transform: translateX(100%);
  transition: transform .28s ease;
  padding: 30px var(--edge);
  overflow-y: auto;
}
.mobile-nav.open{ transform: translateX(0); }
.mobile-nav ul{ display:flex; flex-direction:column; gap: 4px; }
.mobile-nav a{
  display:block; padding: 18px 0; font-family: var(--font-display); font-size: 26px; border-bottom: 1px solid var(--line);
}
.mobile-nav .btn-row{ margin-top: 28px; flex-direction:column; }