/* ==========================================================================
   DUWADI ENGINEERING SERVICES — design system
   Palette:  ink #0B1220 · steel #16283D · paper #EDF1EF · slate #5C6B73
             flame #E8912F · gasteal #3EA6A0
   Type:     display  Space Grotesk
             body     IBM Plex Sans
             utility  IBM Plex Mono
   ========================================================================== */

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

:root{
  --ink:#0B1220;
  --steel:#16283D;
  --steel-2:#1E3550;
  --paper:#EDF1EF;
  --paper-2:#E2E8E4;
  --slate:#5C6B73;
  --slate-light:#8B98A0;
  --flame:#E8912F;
  --flame-dark:#C97620;
  --gasteal:#3EA6A0;
  --line:rgba(11,18,32,0.14);
  --line-dark:rgba(237,241,239,0.16);
  --radius:2px;
  --max:1180px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{
  font-family:'Space Grotesk',system-ui,sans-serif;
  margin:0 0 .5em;
  line-height:1.12;
  letter-spacing:-0.01em;
  font-weight:600;
}
p{margin:0 0 1em;color:var(--slate);}
.mono{font-family:'IBM Plex Mono',monospace;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
}

/* ---------- utility ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px;}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--flame);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--flame);display:inline-block;}
.eyebrow.on-dark{color:var(--gasteal);}
.eyebrow.on-dark::before{background:var(--gasteal);}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:'IBM Plex Mono',monospace;
  font-size:13px;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:14px 22px;
  border:1px solid var(--ink);
  color:var(--ink);
  background:transparent;
  transition:background .18s ease, color .18s ease, border-color .18s ease;
  cursor:pointer;
}
.btn:hover{background:var(--ink);color:var(--paper);}
.btn.primary{background:var(--flame);border-color:var(--flame);color:var(--ink);}
.btn.primary:hover{background:var(--flame-dark);border-color:var(--flame-dark);color:var(--ink);}
.btn.on-dark{border-color:var(--line-dark);color:var(--paper);}
.btn.on-dark:hover{background:var(--paper);color:var(--ink);}
.btn svg{width:14px;height:14px;}

section{position:relative;}
.section-pad{padding:96px 0;}
@media (max-width:720px){.section-pad{padding:64px 0;}}

.crop{position:absolute;width:16px;height:16px;pointer-events:none;opacity:.5;}
.crop.tl{top:18px;left:18px;border-top:1px solid currentColor;border-left:1px solid currentColor;}
.crop.tr{top:18px;right:18px;border-top:1px solid currentColor;border-right:1px solid currentColor;}
.crop.bl{bottom:18px;left:18px;border-bottom:1px solid currentColor;border-left:1px solid currentColor;}
.crop.br{bottom:18px;right:18px;border-bottom:1px solid currentColor;border-right:1px solid currentColor;}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(237,241,239,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;
}
.brand{display:flex;align-items:center;gap:12px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:17px;letter-spacing:-.01em;}
.brand .mark{
  width:34px;height:34px;flex:0 0 auto;
  border:1px solid var(--ink);
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.brand .mark svg{width:18px;height:18px;}
.brand .name-full{display:block;}
.brand .name-full small{display:block;font-family:'IBM Plex Mono',monospace;font-weight:400;font-size:10px;letter-spacing:.1em;color:var(--slate);text-transform:uppercase;margin-top:2px;}

nav.primary-nav{display:flex;align-items:center;gap:2px;}
nav.primary-nav a{
  font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:10px 14px;
  color:var(--slate);
  border-bottom:2px solid transparent;
  transition:color .15s ease, border-color .15s ease;
}
nav.primary-nav a:hover{color:var(--ink);}
nav.primary-nav a.active{color:var(--ink);border-color:var(--flame);}
.nav-toggle{display:none;background:none;border:1px solid var(--ink);width:40px;height:40px;align-items:center;justify-content:center;}
.nav-toggle svg{width:18px;height:18px;}

@media (max-width:900px){
  nav.primary-nav{
    position:fixed;inset:76px 0 0 0;background:var(--paper);
    flex-direction:column;align-items:stretch;padding:10px 28px 28px;
    gap:0;transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .18s ease, transform .18s ease;
    border-top:1px solid var(--line);
  }
  nav.primary-nav.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  nav.primary-nav a{padding:16px 4px;border-bottom:1px solid var(--line);border-left:2px solid transparent;}
  nav.primary-nav a.active{border-left-color:var(--flame);border-bottom:1px solid var(--line);}
  .nav-toggle{display:flex;}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);}
.site-footer .wrap{padding:64px 28px 32px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;}
@media (max-width:720px){.footer-grid{grid-template-columns:1fr;gap:32px;}}
.footer-grid h4{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--gasteal);font-weight:500;margin-bottom:16px;}
.footer-grid a{display:block;color:var(--slate-light);font-size:14px;padding:5px 0;transition:color .15s ease;}
.footer-grid a:hover{color:var(--paper);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.04em;color:var(--slate-light);
}

/* ---------- hero ---------- */
.hero{
  background:var(--ink);color:var(--paper);
  padding:130px 0 90px;
  overflow:hidden;position:relative;
  border-bottom:1px solid var(--line-dark);
}
.hero .wrap{position:relative;z-index:2;}
.hero h1{font-size:clamp(34px,5.4vw,64px);max-width:780px;color:var(--paper);}
.hero h1 .accent{color:var(--flame);}
.hero .lede{max-width:560px;font-size:17px;color:var(--slate-light);}
.hero .cta-row{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.hero-schematic{position:absolute;right:-40px;top:0;bottom:0;width:52%;opacity:.5;}
@media (max-width:900px){.hero-schematic{display:none;}}

/* page hero (interior pages) */
.page-hero{background:var(--ink);color:var(--paper);padding:76px 0 56px;border-bottom:1px solid var(--line-dark);}
.page-hero h1{color:var(--paper);font-size:clamp(28px,4.4vw,46px);max-width:720px;}
.page-hero .lede{max-width:600px;color:var(--slate-light);font-size:16px;margin-bottom:0;}

/* ---------- schematic flow (signature element) ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line-dark);
  position:relative;
}
@media (max-width:860px){.flow{grid-template-columns:1fr;}}
.flow-node{
  padding:32px 26px;border-right:1px solid var(--line-dark);position:relative;
}
.flow-node:last-child{border-right:none;}
@media (max-width:860px){.flow-node{border-right:none;border-bottom:1px solid var(--line-dark);}
  .flow-node:last-child{border-bottom:none;}}
.flow-node .tag{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--gasteal);letter-spacing:.1em;}
.flow-node h3{font-size:19px;margin:10px 0 8px;color:var(--paper);}
.flow-node p{color:var(--slate-light);font-size:14px;margin:0;}
.flow-node::after{
  content:"";position:absolute;right:-1px;top:50%;transform:translate(50%,-50%);
  width:8px;height:8px;border-radius:50%;background:var(--flame);
  display:none;
}
@media (min-width:861px){.flow-node:not(:last-child)::after{display:block;}}

/* ---------- cards / grids ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
@media (max-width:800px){.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;}}
.card{background:var(--paper);padding:34px 30px;}
.card .idx{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--flame);margin-bottom:14px;display:block;}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:14.5px;margin-bottom:0;}
.card img{width:100%;height:170px;object-fit:cover;margin-bottom:18px;filter:grayscale(15%);}

/* ---------- panels ---------- */
.panel-dark{background:var(--ink);color:var(--paper);}
.panel-dark p{color:var(--slate-light);}
.panel-dark h2{color:var(--paper);}
.panel-steel{background:var(--steel);color:var(--paper);}
.panel-steel p{color:var(--slate-light);}
.panel-steel h2,.panel-steel h3{color:var(--paper);}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
@media (max-width:820px){.two-col{grid-template-columns:1fr;gap:36px;}}

.stat-row{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);}
@media (max-width:700px){.stat-row{grid-template-columns:repeat(2,1fr);}}
.stat{padding:28px 22px;border-right:1px solid var(--line-dark);}
.stat:last-child{border-right:none;}
.stat .num{font-family:'Space Grotesk',sans-serif;font-size:34px;font-weight:700;color:var(--flame);}
.stat .lbl{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--slate-light);margin-top:4px;}

/* CTA band */
.cta-band{background:var(--flame);color:var(--ink);}
.cta-band h2{color:var(--ink);}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px;padding:56px 28px;}
.cta-band p{color:rgba(11,18,32,.72);margin:6px 0 0;}
.cta-band .btn{border-color:var(--ink);}
.cta-band .btn:hover{background:var(--ink);color:var(--paper);}

/* map */
.map-wrap{border:1px solid var(--line);filter:grayscale(35%) contrast(1.05);}
.map-wrap iframe{width:100%;height:380px;border:0;display:block;}

/* form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field.full{grid-column:1/-1;}
.field label{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--slate);}
.field input,.field select,.field textarea{
  font-family:'IBM Plex Sans',sans-serif;font-size:15px;
  border:1px solid var(--line);background:#fff;padding:12px 14px;color:var(--ink);
  border-radius:var(--radius);
}
.field textarea{resize:vertical;min-height:120px;}
.field input:focus,.field select:focus,.field textarea:focus,button:focus-visible,a:focus-visible{
  outline:2px solid var(--flame);outline-offset:2px;
}

.contact-band{display:grid;grid-template-columns:.9fr 1.1fr;gap:0;border:1px solid var(--line);}
@media (max-width:860px){.contact-band{grid-template-columns:1fr;}}
.contact-band .side{background:var(--ink);color:var(--paper);padding:44px 38px;}
.contact-band .side p{color:var(--slate-light);}
.contact-band .side .row{padding:16px 0;border-top:1px solid var(--line-dark);}
.contact-band .side .row:first-of-type{border-top:none;margin-top:8px;}
.contact-band .side .row .k{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--gasteal);}
.contact-band .side .row .v{font-size:15px;margin-top:4px;}
.contact-band .main{background:var(--paper);padding:44px 38px;}

/* team */
.team-card{padding:30px;background:var(--paper);}
.team-card .role{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--flame);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px;}

/* check list / market tags (value proposition, market focus) */
.check-list{list-style:none;margin:0 0 1em;padding:0;}
.check-list li{
  position:relative;padding:10px 0 10px 26px;
  border-bottom:1px solid var(--line);
  font-size:14.5px;color:var(--slate);
}
.check-list li:last-child{border-bottom:none;}
.check-list li::before{
  content:"";position:absolute;left:0;top:16px;
  width:8px;height:8px;background:var(--flame);
}
.panel-dark .check-list li,.panel-steel .check-list li{color:var(--slate-light);border-color:var(--line-dark);}

.market-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.market-tags span{
  font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:.02em;
  padding:9px 14px;border:1px solid var(--line);color:var(--slate);
}

/* comparison table (safety profile) */
.compare-table{width:100%;border-collapse:collapse;font-size:13.5px;}
.compare-table th,.compare-table td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;}
.compare-table thead th{background:var(--ink);color:var(--paper);font-family:'IBM Plex Mono',monospace;font-weight:500;letter-spacing:.04em;text-transform:uppercase;font-size:11.5px;}
.compare-table tbody th{font-family:'Space Grotesk',sans-serif;font-weight:600;background:var(--paper-2);white-space:nowrap;}
.compare-table td.lng{background:rgba(62,166,160,0.1);font-weight:500;}
.table-scroll{overflow-x:auto;border:1px solid var(--line);}
.table-scroll .compare-table{border:none;}
.table-scroll .compare-table th:first-child,.table-scroll .compare-table td:first-child{border-left:none;}
.table-scroll .compare-table th:last-child,.table-scroll .compare-table td:last-child{border-right:none;}

/* spec list (products) */
.spec-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line-dark);}
.spec-list li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line-dark);font-size:14px;}
.spec-list li span:first-child{color:var(--slate-light);font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.04em;text-transform:uppercase;}
.spec-list li span:last-child{color:var(--paper);text-align:right;}

/* video embeds */
video{max-width:100%;display:block;background:#000;}
.video-frame{border:1px solid var(--line);background:#000;}
.video-frame video{width:100%;}
.video-caption{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.04em;color:var(--slate);margin-top:10px;}

/* misc headings sizing */
.h2-lg{font-size:clamp(26px,3.4vw,40px);}
.lede{font-size:17px;color:var(--slate);max-width:640px;}
.section-head{margin-bottom:44px;}