/* ==========================================================================
   INFINITY ENERGY GROUP — shared stylesheet
   Design language: engineering blueprint meets industrial hardware.
   Palette: graphite/steel darks, brass accent, blueprint-cyan linework.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --graphite: #12161B;
  --panel: #1A2028;
  --panel-2: #212934;
  --line: #2C3542;
  --blueprint: #7FA8B8;
  --blueprint-dim: #4C6673;
  --brass: #C08A3E;
  --brass-bright: #D9A34F;
  --paper: #EDE7DA;
  --paper-dim: #9CA0A6;
  --signal: #B5432E;

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

  --maxw: 1240px;
  --gutter: clamp(24px, 5vw, 64px);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }

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

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

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

/* Background schematic texture: faint grid, like graph/blueprint paper */
body{
  background-image:
    linear-gradient(rgba(127,168,184,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127,168,184,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--brass-bright);
  outline-offset:3px;
}

/* ---------------------------------- Type ---------------------------------- */
h1,h2,h3,h4{
  font-family:var(--display);
  font-weight:600;
  color:var(--paper);
  letter-spacing:-0.01em;
  line-height:1.12;
}
h1{ font-size:clamp(2.4rem, 4.6vw, 4rem); font-weight:700; }
h2{ font-size:clamp(1.8rem, 3vw, 2.6rem); }
h3{ font-size:1.25rem; }

.eyebrow{
  font-family:var(--mono);
  font-size:0.78rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--brass-bright);
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--brass-bright);
  display:inline-block;
}

.lede{ color:var(--paper-dim); font-size:1.08rem; max-width:60ch; }
.spec{ font-family:var(--mono); font-size:0.82rem; color:var(--blueprint); }

/* --------------------------------- Buttons --------------------------------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono);
  font-size:0.85rem;
  letter-spacing:0.04em;
  text-transform:uppercase;
  padding:14px 26px;
  border-radius:2px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  white-space:nowrap;
}
.btn-primary{ background:var(--brass); color:#14181D; }
.btn-primary:hover{ background:var(--brass-bright); transform:translateY(-1px); }
.btn-ghost{ border-color:var(--line); color:var(--paper); }
.btn-ghost:hover{ border-color:var(--blueprint); color:var(--blueprint); }
.btn svg{ width:14px; height:14px; }

/* ---------------------------------- Header ---------------------------------- */
header.site{
  position:sticky; top:0; z-index:100;
  background:rgba(18,22,27,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px var(--gutter);
  max-width:var(--maxw); margin:0 auto;
}
.logo{
  display:flex; align-items:center; gap:12px;
  font-family:var(--display); font-weight:700; font-size:1.05rem;
  letter-spacing:0.01em;
}
.logo .mark{ width:30px; height:30px; flex-shrink:0; }
.logo .brandname{ display:flex; flex-direction:column; line-height:1.1; }
.logo .brandname small{
  font-family:var(--mono); font-weight:400; font-size:0.62rem;
  letter-spacing:0.16em; color:var(--brass-bright); text-transform:uppercase;
}
.navlinks{ display:flex; gap:34px; align-items:center; }
.navlinks a{
  font-family:var(--mono); font-size:0.82rem; letter-spacing:0.03em;
  text-transform:uppercase; color:var(--paper-dim);
  position:relative; padding:6px 0;
  transition:color .15s ease;
}
.navlinks a:hover, .navlinks a[aria-current="page"]{ color:var(--paper); }
.navlinks a[aria-current="page"]::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px; background:var(--brass);
}
.nav .cta{ display:flex; align-items:center; gap:22px; }
.navtoggle{
  display:none; background:none; border:1px solid var(--line); color:var(--paper);
  width:40px; height:40px; align-items:center; justify-content:center; border-radius:2px;
}

@media (max-width: 880px){
  .navlinks{
    position:fixed; inset:64px 0 0 0; background:var(--graphite);
    flex-direction:column; justify-content:flex-start; align-items:flex-start;
    padding:32px var(--gutter); gap:22px; border-top:1px solid var(--line);
    transform:translateY(-110%); transition:transform .25s ease; z-index:90;
  }
  .navlinks.open{ transform:translateY(0); }
  .navtoggle{ display:flex; }
  .nav .cta .btn-primary{ padding:11px 16px; font-size:0.72rem; }
}

/* --------------------------------- Pipeline spine --------------------------------- */
/* The recurring signature motif: a schematic pipeline running down the page,
   with a flange ring marking the start of each major section — literalizing
   the client's own subject matter (pipeline runs, flanged joints) as the page's
   structural device rather than decoration. */
.spine{
  position:absolute; left:calc(var(--gutter) / 2 - 1px); top:0; bottom:0;
  width:2px; background:var(--line);
  display:none;
}
@media (min-width:1080px){ .spine{ display:block; } }
.section{ position:relative; }
.flange{
  position:absolute; left:calc(var(--gutter) / 2); top:64px;
  width:14px; height:14px; margin-left:-7px;
  border-radius:50%;
  border:2px solid var(--blueprint-dim);
  background:var(--graphite);
  display:none;
}
@media (min-width:1080px){ .flange{ display:block; } }

/* ---------------------------------- Hero ---------------------------------- */
.hero{
  padding:96px 0 88px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.hero .wrap{
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:center;
}
@media (max-width:960px){ .hero .wrap{ grid-template-columns:1fr; } }
.hero h1{ margin:20px 0 22px; }
.hero .lede{ margin-bottom:34px; font-size:1.12rem; }
.hero .actions{ display:flex; gap:16px; flex-wrap:wrap; }
.hero-art{ position:relative; }
.hero-art svg{ width:100%; height:auto; }

.tagrow{
  display:flex; flex-wrap:wrap; gap:10px 26px; margin-top:44px;
  padding-top:26px; border-top:1px solid var(--line);
}
.tagrow span{ font-family:var(--mono); font-size:0.78rem; color:var(--paper-dim); }
.tagrow strong{ color:var(--blueprint); font-weight:500; }

/* --------------------------------- Sections --------------------------------- */
section{ padding:88px 0; }
section.alt{ background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ max-width:680px; margin-bottom:52px; }
.section-head h2{ margin-top:16px; }
.section-head .lede{ margin-top:14px; }

/* ----------------------------------- Grid cards ----------------------------------- */
.grid{ display:grid; gap:1px; background:var(--line); border:1px solid var(--line); }
.grid.cols-3{ grid-template-columns:repeat(3,1fr); }
.grid.cols-4{ grid-template-columns:repeat(4,1fr); }
.grid.cols-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:900px){ .grid.cols-3, .grid.cols-4{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .grid.cols-3, .grid.cols-4, .grid.cols-2{ grid-template-columns:1fr; } }

.card{
  background:var(--graphite); padding:34px 30px;
  display:flex; flex-direction:column; gap:14px;
  transition:background .2s ease;
}
section.alt .card{ background:var(--panel); }
.card:hover{ background:var(--panel-2); }
.card .icon{ width:38px; height:38px; color:var(--brass-bright); }
.card .num{ font-family:var(--mono); font-size:0.78rem; color:var(--blueprint-dim); }
.card h3{ margin-top:2px; }
.card p{ color:var(--paper-dim); font-size:0.95rem; }
.card a.more{ margin-top:auto; font-family:var(--mono); font-size:0.78rem; color:var(--blueprint); text-transform:uppercase; letter-spacing:0.04em; }
.card a.more:hover{ color:var(--brass-bright); }

/* --------------------------------- Process list --------------------------------- */
.process{ display:flex; flex-direction:column; }
.pstep{
  display:grid; grid-template-columns:80px 1fr; gap:28px;
  padding:30px 0; border-top:1px solid var(--line);
}
.pstep:last-child{ border-bottom:1px solid var(--line); }
.pstep .jt{ font-family:var(--mono); color:var(--blueprint); font-size:0.95rem; padding-top:4px; }
.pstep h3{ margin-bottom:8px; }
.pstep p{ color:var(--paper-dim); max-width:60ch; }

/* --------------------------------- Industries strip --------------------------------- */
.strip{ display:flex; flex-wrap:wrap; gap:14px; }
.chip{
  font-family:var(--mono); font-size:0.82rem; letter-spacing:0.02em;
  border:1px solid var(--line); padding:10px 18px; border-radius:2px;
  color:var(--paper-dim);
}

/* ---------------------------------- CTA band ---------------------------------- */
.ctaband{
  background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:70px 0;
}
.ctaband .wrap{ display:flex; justify-content:space-between; align-items:center; gap:30px; flex-wrap:wrap; }
.ctaband h2{ font-size:clamp(1.6rem,2.6vw,2.2rem); max-width:600px; }

/* ---------------------------------- Footer ---------------------------------- */
footer.site{ padding:64px 0 34px; border-top:1px solid var(--line); }
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; margin-bottom:48px; }
@media (max-width:800px){ .foot-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .foot-grid{ grid-template-columns:1fr; } }
.foot-grid h4{ font-family:var(--mono); font-size:0.78rem; text-transform:uppercase; letter-spacing:0.1em; color:var(--brass-bright); margin-bottom:16px; }
.foot-grid li{ margin-bottom:10px; }
.foot-grid a, .foot-grid p{ color:var(--paper-dim); font-size:0.92rem; }
.foot-grid a:hover{ color:var(--paper); }
.footbottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  padding-top:26px; border-top:1px solid var(--line);
  font-family:var(--mono); font-size:0.76rem; color:var(--paper-dim);
}

/* --------------------------------- Page hero (inner pages) --------------------------------- */
.pagehero{ padding:70px 0 60px; border-bottom:1px solid var(--line); }
.pagehero .eyebrow{ margin-bottom:18px; }
.pagehero .lede{ margin-top:16px; }
.crumb{ font-family:var(--mono); font-size:0.76rem; color:var(--paper-dim); margin-bottom:22px; }
.crumb a:hover{ color:var(--blueprint); }

/* --------------------------------- Detail blocks (services/products) --------------------------------- */
.detail{
  display:grid; grid-template-columns:280px 1fr; gap:48px;
  padding:56px 0; border-top:1px solid var(--line);
}
.detail:last-child{ border-bottom:1px solid var(--line); }
@media (max-width:800px){ .detail{ grid-template-columns:1fr; gap:20px; } }
.detail .label{ }
.detail .label .num{ font-family:var(--mono); color:var(--blueprint-dim); font-size:0.85rem; display:block; margin-bottom:10px;}
.detail .label h3{ font-size:1.4rem; }
.detail .body p{ color:var(--paper-dim); margin-bottom:16px; max-width:70ch; }
.speclist{ display:flex; flex-wrap:wrap; gap:10px; margin-top:18px; }
.speclist span{
  font-family:var(--mono); font-size:0.76rem; color:var(--blueprint);
  border:1px solid var(--blueprint-dim); padding:6px 12px; border-radius:2px;
}

/* --------------------------------- Contact --------------------------------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:64px; }
@media (max-width:880px){ .contact-grid{ grid-template-columns:1fr; } }
.field{ margin-bottom:22px; }
.field label{ display:block; font-family:var(--mono); font-size:0.78rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--paper-dim); margin-bottom:8px; }
.field input, .field select, .field textarea{
  width:100%; background:var(--panel); border:1px solid var(--line); color:var(--paper);
  padding:13px 14px; font-family:var(--body); font-size:0.95rem; border-radius:2px;
  transition:border-color .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--blueprint); outline:none; }
.field textarea{ resize:vertical; min-height:120px; }
.infoblock{ margin-bottom:34px; }
.infoblock h4{ font-family:var(--mono); font-size:0.78rem; text-transform:uppercase; letter-spacing:0.1em; color:var(--brass-bright); margin-bottom:12px; }
.infoblock p, .infoblock a{ color:var(--paper-dim); }
.formnote{ font-family:var(--mono); font-size:0.76rem; color:var(--paper-dim); margin-top:10px; }

/* --------------------------------- Values / about --------------------------------- */
.valuegrid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:12px; }
@media (max-width:700px){ .valuegrid{ grid-template-columns:1fr; } }

/* Flow-dot animation for pipeline SVGs */
.flowdot{
  animation: flow 4.5s linear infinite;
}
@keyframes flow{
  0%{ offset-distance:0%; opacity:0; }
  8%{ opacity:1; }
  92%{ opacity:1; }
  100%{ offset-distance:100%; opacity:0; }
}