/* ===== Kamra Engineering Solutions / wasteheat-recovery.com ===== */

:root{
  --vellum:#EDEFE8;
  --vellum-panel:#F8F9F4;
  --grid-line:#D3D8CC;
  --ink:#182420;
  --blueprint:#1F5C6B;
  --blueprint-dim:#3E7683;
  --steel:#5D6A63;
  --hazard:#D6551F;
  --hazard-dim:#B8471A;
  --green-ok:#2E7D4F;
  --white:#FFFFFF;
  --sheet-margin: clamp(12px, 2.4vw, 28px);
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--vellum);
  color:var(--ink);
  font-family:'IBM Plex Sans', sans-serif;
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important; transition-duration:0.01ms !important;}
}
a{color:inherit; text-decoration:none;}
ul{list-style:none;}

h1,h2,h3,h4{
  font-family:'Big Shoulders Display', sans-serif;
  text-transform:uppercase;
  color:var(--ink);
  line-height:0.97;
  letter-spacing:0.01em;
}

/* ---------- sheet chrome ---------- */
.sheet{
  position:relative;
  margin:var(--sheet-margin);
  border:1.5px solid var(--ink);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 27px, var(--grid-line) 27px, var(--grid-line) 28px),
    repeating-linear-gradient(90deg, transparent, transparent 27px, var(--grid-line) 27px, var(--grid-line) 28px);
  background-color:var(--vellum);
}
.reg-mark{ position:absolute; width:16px; height:16px; z-index:5; pointer-events:none; }
.reg-mark::before, .reg-mark::after{content:""; position:absolute; background:var(--ink);}
.reg-mark::before{ width:16px; height:1.5px; top:7px; left:0; }
.reg-mark::after{ width:1.5px; height:16px; left:7px; top:0; }
.reg-tl{top:-1px; left:-1px;} .reg-tr{top:-1px; right:-1px;}
.reg-bl{bottom:-1px; left:-1px;} .reg-br{bottom:-1px; right:-1px;}

.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:12px; letter-spacing:0.18em; text-transform:uppercase;
  color:var(--blueprint); display:flex; align-items:center; gap:10px;
}
.eyebrow::before{content:""; width:22px; height:1.5px; background:var(--hazard); display:inline-block;}

/* ---------- header / nav ---------- */
.site-header{
  display:flex; align-items:center; justify-content:space-between;
  padding: 20px clamp(20px,4vw,48px);
  border-bottom:1.5px solid var(--ink);
  flex-wrap:wrap; gap:12px;
}
.brand-block .brand{ font-family:'IBM Plex Mono', monospace; font-weight:600; font-size:14px; letter-spacing:0.05em;}
.brand-block .brand strong{color:var(--blueprint);}
.brand-block .brand-sub{ font-family:'IBM Plex Mono', monospace; font-size:10.5px; color:var(--steel); letter-spacing:0.08em; margin-top:3px; text-transform:uppercase;}
.main-nav{ display:flex; align-items:center; gap:26px; flex-wrap:wrap;}
.main-nav a{
  font-family:'IBM Plex Mono', monospace; font-size:12.5px; letter-spacing:0.05em; text-transform:uppercase;
  color:var(--steel); padding-bottom:3px; border-bottom:1.5px solid transparent;
}
.main-nav a:hover, .main-nav a.active{ color:var(--ink); border-color:var(--hazard);}
.drawing-no{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--steel); letter-spacing:0.04em; text-align:right;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:'IBM Plex Mono', monospace; font-size:13px; font-weight:500;
  padding:12px 20px; border:1.5px solid var(--ink);
  transition:all 0.15s ease; white-space:nowrap;
}
.btn .arrow{transition:transform 0.15s ease;}
.btn:hover .arrow{transform:translateX(3px);}
.btn-primary{ background:var(--ink); color:var(--white);}
.btn-primary:hover{ background:var(--hazard); border-color:var(--hazard);}
.btn-outline{ background:transparent; color:var(--ink);}
.btn-outline:hover{ background:var(--hazard); border-color:var(--hazard); color:var(--white);}
.btn.disabled{ color:var(--steel); border-color:var(--grid-line); cursor:default;}
.btn.disabled:hover{ background:none; color:var(--steel); border-color:var(--grid-line);}

/* ---------- hero (single) ---------- */
.hero{
  padding: clamp(40px,7vw,80px) clamp(20px,4vw,48px) clamp(36px,5vw,56px);
  border-bottom:1.5px solid var(--ink);
}
.hero h1{ font-size:clamp(38px,6vw,68px); margin-top:14px; max-width:20ch;}
.hero p.lede{ margin-top:18px; max-width:56ch; font-size:17px; color:var(--steel);}
.hero-actions{ display:flex; gap:14px; margin-top:26px; flex-wrap:wrap;}

/* ---------- hero split (home) ---------- */
.hero-split{
  display:grid; grid-template-columns:1fr 1fr;
  border-bottom:1.5px solid var(--ink);
}
.hero-half{ padding:clamp(36px,6vw,64px) clamp(24px,4vw,44px); position:relative;}
.hero-half:first-child{ border-right:1.5px solid var(--ink);}
.hero-half h2{ font-size:clamp(30px,4.2vw,46px); margin-top:14px; max-width:16ch;}
.hero-half p{ margin-top:16px; max-width:44ch; font-size:15.5px; color:var(--steel);}
.hero-half .btn{ margin-top:24px;}

/* ---------- stat strip ---------- */
.stat-strip{
  display:flex; flex-wrap:wrap;
  border-bottom:1.5px solid var(--ink);
}
.stat-item{
  flex:1 1 180px; padding:20px clamp(18px,3vw,32px);
  border-right:1.5px solid var(--ink);
  font-family:'IBM Plex Mono', monospace;
}
.stat-item:last-child{ border-right:none;}
.stat-item .k{ font-size:10.5px; letter-spacing:0.06em; color:var(--steel); text-transform:uppercase; display:block; margin-bottom:6px;}
.stat-item .v{ font-size:15px; color:var(--ink); font-weight:500;}

/* ---------- section head ---------- */
.section-head{
  display:flex; align-items:baseline; justify-content:space-between;
  padding: 34px clamp(20px,4vw,48px) 18px; gap:16px; flex-wrap:wrap;
}
.section-head h2{ font-size:clamp(28px,4vw,40px);}
.section-head .tag{
  font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--steel);
  letter-spacing:0.05em; max-width:38ch; text-align:right;
}

/* ---------- service cards ---------- */
.services-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(300px,1fr));
  border-top:1.5px solid var(--ink);
}
.service-card{
  border-right:1.5px solid var(--ink); border-bottom:1.5px solid var(--ink);
  padding:28px 26px; background:var(--vellum-panel);
  display:flex; flex-direction:column; gap:14px;
}
.service-card .sc-id{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--steel); letter-spacing:0.05em;}
.service-card h3{ font-size:30px;}
.service-card p{ font-size:14.5px; color:var(--steel);}
.service-card ul{ display:flex; flex-direction:column; gap:8px; margin-top:4px;}
.service-card li{
  font-family:'IBM Plex Mono', monospace; font-size:12.5px; color:var(--ink);
  padding-left:16px; position:relative;
}
.service-card li::before{content:"—"; position:absolute; left:0; color:var(--hazard);}
.service-card .btn{ margin-top:auto; align-self:flex-start;}

/* ---------- approach steps ---------- */
.approach{
  padding: 8px clamp(20px,4vw,48px) 44px;
  border-bottom:1.5px solid var(--ink);
}
.approach h3{ font-size:22px; margin-bottom:20px;}
.approach-steps{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(200px,1fr));
  gap:0; border-top:1px solid var(--grid-line); border-left:1px solid var(--grid-line);
}
.approach-step{
  border-right:1px solid var(--grid-line); border-bottom:1px solid var(--grid-line);
  padding:18px 18px;
}
.approach-step .num{
  font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--hazard); letter-spacing:0.05em;
}
.approach-step h4{ font-size:18px; margin:8px 0 6px; text-transform:none;}
.approach-step p{ font-size:13px; color:var(--steel);}

/* ---------- module cards (products) ---------- */
.modules{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(280px,1fr));
  border-top:1.5px solid var(--ink);
}
.module-card{
  border-right:1.5px solid var(--ink); border-bottom:1.5px solid var(--ink);
  padding:26px 24px 24px; background:var(--vellum-panel);
  display:flex; flex-direction:column; gap:14px; min-height:280px;
  transition:background 0.15s ease;
}
.module-card:hover{ background:var(--white);}
.mc-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:10px;}
.mc-id{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--steel); letter-spacing:0.05em;}
.status{
  font-family:'IBM Plex Mono', monospace; font-size:10.5px; letter-spacing:0.06em;
  padding:3px 8px; border:1px solid currentColor; white-space:nowrap; text-transform:uppercase;
}
.status.live{color:var(--green-ok);} .status.dev{color:var(--hazard);} .status.built{color:var(--blueprint);}
.module-card h3{ font-size:28px; margin-top:2px;}
.module-card .desc{ font-size:14.5px; color:var(--steel); flex-grow:1;}
.spec-line{
  font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--ink);
  display:flex; gap:8px; align-items:baseline; border-top:1px dashed var(--grid-line); padding-top:10px;
}
.spec-line .lbl{ color:var(--steel); min-width:64px;}

/* ---------- credibility / about ---------- */
.about-block{
  padding: 40px clamp(20px,4vw,48px) 48px;
  border-bottom:1.5px solid var(--ink);
  display:grid; grid-template-columns:0.8fr 1.2fr; gap:40px;
}
.about-block h2{ font-size:clamp(26px,3.6vw,34px); max-width:10ch;}
.about-body p{ color:var(--steel); font-size:15px; max-width:64ch; margin-bottom:14px;}
.about-body strong{ color:var(--ink); font-weight:600;}
.credentials{ display:flex; flex-wrap:wrap; gap:10px; margin-top:20px;}
.credential{
  font-family:'IBM Plex Mono', monospace; font-size:11.5px; letter-spacing:0.04em;
  padding:6px 11px; border:1px solid var(--steel); color:var(--steel); text-transform:uppercase;
}

/* ---------- associate strip ---------- */
.associate-strip{
  padding:20px clamp(20px,4vw,48px);
  border-bottom:1.5px solid var(--ink);
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  background:var(--blueprint); color:var(--vellum);
}
.associate-strip .a-text{ font-family:'IBM Plex Mono', monospace; font-size:12.5px; letter-spacing:0.03em;}
.associate-strip .a-text strong{ color:var(--white);}
.associate-strip a.btn{ background:var(--vellum); color:var(--ink); border-color:var(--vellum);}
.associate-strip a.btn:hover{ background:var(--hazard); border-color:var(--hazard); color:var(--white);}

/* ---------- trust strip ---------- */
.trust-strip{
  padding:18px clamp(20px,4vw,48px); border-bottom:1.5px solid var(--ink);
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  font-family:'IBM Plex Mono', monospace; font-size:12.5px; color:var(--steel);
  background:var(--vellum-panel);
}
.trust-strip strong{ color:var(--ink);}

/* ---------- CTA banner ---------- */
.cta-banner{
  padding:clamp(36px,6vw,56px) clamp(20px,4vw,48px);
  border-bottom:1.5px solid var(--ink);
  display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
  background:var(--ink); color:var(--vellum);
}
.cta-banner h2{ color:var(--vellum); font-size:clamp(26px,4vw,38px); max-width:16ch;}
.cta-banner .btn-primary{ background:var(--hazard); border-color:var(--hazard); color:var(--white);}
.cta-banner .btn-primary:hover{ background:var(--white); border-color:var(--white); color:var(--ink);}

/* ---------- contact ---------- */
.contact-grid{
  display:grid; grid-template-columns:1.3fr 1fr;
  border-bottom:1.5px solid var(--ink);
}
.contact-form{ padding:clamp(28px,4vw,44px); border-right:1.5px solid var(--ink); display:flex; flex-direction:column; gap:18px;}
.form-row{ display:flex; flex-direction:column; gap:8px;}
.form-row label{
  font-family:'IBM Plex Mono', monospace; font-size:11px; letter-spacing:0.06em; text-transform:uppercase; color:var(--steel);
}
.form-row input, .form-row select, .form-row textarea{
  font-family:'IBM Plex Sans', sans-serif; font-size:14.5px; color:var(--ink);
  border:1.5px solid var(--ink); background:var(--vellum-panel); padding:11px 13px;
}
.form-row textarea{ resize:vertical; min-height:120px;}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{ outline:2px solid var(--blueprint); outline-offset:-1px;}
.form-note{
  font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--hazard);
  border:1px dashed var(--hazard); padding:10px 12px;
}
.contact-info{ padding:clamp(28px,4vw,44px); display:flex; flex-direction:column; gap:22px;}
.info-item .k{ font-family:'IBM Plex Mono', monospace; font-size:10.5px; letter-spacing:0.06em; text-transform:uppercase; color:var(--steel); display:block; margin-bottom:5px;}
.info-item .v{ font-size:16px; color:var(--ink);}
.info-item .v.placeholder{ color:var(--hazard); font-family:'IBM Plex Mono', monospace; font-size:13px;}

/* ---------- titleblock footer ---------- */
.titleblock{ display:grid; grid-template-columns:repeat(6,1fr); font-family:'IBM Plex Mono', monospace; font-size:11.5px;}
.tb-cell{ border-right:1.5px solid var(--ink); border-bottom:1.5px solid var(--ink); padding:12px 14px;}
.tb-cell:last-child{ border-right:none;}
.tb-cell .k{ display:block; color:var(--steel); text-transform:uppercase; letter-spacing:0.06em; font-size:10px; margin-bottom:5px;}
.tb-cell .v{ color:var(--ink); font-weight:500;}
.tb-wide{ grid-column:span 2;}
.footer-nav{
  display:flex; gap:22px; flex-wrap:wrap; padding:16px clamp(20px,4vw,48px);
  border-bottom:1.5px solid var(--ink);
  font-family:'IBM Plex Mono', monospace; font-size:12px;
}
.footer-nav a{ color:var(--steel);}
.footer-nav a:hover{ color:var(--hazard);}
.footer-note{
  padding:16px clamp(20px,4vw,48px) 22px; font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--steel);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .hero-split{ grid-template-columns:1fr;}
  .hero-half:first-child{ border-right:none; border-bottom:1.5px solid var(--ink);}
  .about-block{ grid-template-columns:1fr;}
  .contact-grid{ grid-template-columns:1fr;}
  .contact-form{ border-right:none; border-bottom:1.5px solid var(--ink);}
  .titleblock{ grid-template-columns:repeat(2,1fr);}
  .tb-wide{ grid-column:span 2;}
  .section-head{ flex-direction:column; align-items:flex-start;}
  .section-head .tag{ text-align:left;}
  .main-nav{ gap:16px;}
}