/* ===========================================================
   Debraj Engineering — design system (single-page edition)
   Palette:  charcoal instrument panel + a literal thermal
   spectrum (indigo > violet > magenta > ember > amber > white)
   used generously as color throughout — accents, borders,
   numerals, icons, section washes.
   =========================================================== */

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

:root{
  --bg:            #0a0d10;
  --panel:         #12181d;
  --panel-2:       #161d23;
  --line:          #232b32;
  --text:          #e7edf1;
  --text-dim:      #8a97a0;
  --text-faint:    #5b6670;
  --ge:            #c7d3da;

  --spec-1: #3a2472;
  --spec-2: #7d2f8f;
  --spec-3: #c93a7a;
  --spec-4: #ef5a2f;
  --spec-5: #f9a51f;
  --spec-6: #ffe9a8;

  --spectrum: linear-gradient(90deg, var(--spec-1), var(--spec-2), var(--spec-3), var(--spec-4), var(--spec-5), var(--spec-6));

  --radius: 3px;
  --maxw: 1180px;

  --display: 'Space Grotesk', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

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

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

a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}

h1,h2,h3,h4{
  font-family:var(--display);
  font-weight:600;
  line-height:1.15;
  letter-spacing:-0.01em;
}

.mono{font-family:var(--mono);}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}

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

.spectral-rule{height:3px; width:100%; background:var(--spectrum); border:none; opacity:0.95;}
.spectral-rule.thin{height:1px; opacity:0.6;}

.spectral-tick{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:11px; letter-spacing:0.12em;
  text-transform:uppercase; color:var(--spec-5);
}
.spectral-tick::before{content:''; width:22px; height:3px; background:var(--spectrum); display:inline-block;}

.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(10,13,16,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 32px; max-width:var(--maxw); margin:0 auto; gap:24px;
}
.brand{display:flex; align-items:center; gap:12px;}
.brand-mark{
  width:38px; height:38px; border-radius:50%;
  background:
    radial-gradient(circle at 35% 30%, rgba(255,255,255,0.55), transparent 40%),
    conic-gradient(from 210deg, var(--spec-1), var(--spec-2), var(--spec-3), var(--spec-4), var(--spec-5), var(--spec-6), var(--spec-1));
  flex-shrink:0;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.15), 0 0 18px rgba(239,90,47,0.35);
}
.brand-text{display:flex; flex-direction:column; line-height:1.15;}
.brand-name{font-family:var(--display); font-weight:700; font-size:17px; letter-spacing:-0.01em;}
.brand-tag{font-family:var(--mono); font-size:10.5px; color:var(--spec-5); letter-spacing:0.03em;}

.contact-strip{
  display:flex; flex-direction:column; align-items:flex-end;
  font-family:var(--mono); font-size:12.5px; color:var(--text-dim); gap:2px;
}
.contact-strip a:hover{color:var(--spec-5);}

nav.main-nav{border-top:1px solid var(--line);}
.main-nav ul{
  list-style:none; display:flex; gap:2px;
  max-width:var(--maxw); margin:0 auto; padding:0 32px; overflow-x:auto;
}
.main-nav a{
  display:block; padding:13px 18px; font-size:13.5px; font-weight:500;
  color:var(--text-dim); border-bottom:2px solid transparent;
  white-space:nowrap; transition:color .15s ease, border-color .15s ease;
}
.main-nav a:hover{color:var(--text);}
.main-nav a.active{color:var(--spec-5); border-bottom:2px solid var(--spec-4);}

.hero{
  padding:76px 0 64px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(ellipse 900px 420px at 82% -10%, rgba(249,165,31,0.16), transparent 60%),
    radial-gradient(ellipse 800px 420px at 8% 6%, rgba(125,47,143,0.20), transparent 60%),
    radial-gradient(ellipse 500px 300px at 50% 100%, rgba(201,58,122,0.10), transparent 60%);
}
.hero-grid{display:grid; grid-template-columns:1.2fr 0.8fr; gap:56px; align-items:end;}
.eyebrow{
  font-family:var(--mono); font-size:12px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--spec-5); margin-bottom:18px; display:inline-block;
}
.hero h1{font-size:clamp(32px, 4.2vw, 52px); margin-bottom:20px;}
.hero .lede{font-size:17px; color:var(--text-dim); max-width:52ch; margin-bottom:28px;}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap;}

.btn{
  display:inline-flex; align-items:center; gap:8px; padding:12px 22px;
  border-radius:var(--radius); font-size:14px; font-weight:600; font-family:var(--body);
  border:1px solid transparent; cursor:pointer;
  transition:transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.btn-primary{
  background:linear-gradient(90deg, var(--spec-3), var(--spec-4), var(--spec-5));
  color:#140b02;
  box-shadow:0 0 0 rgba(239,90,47,0);
}
.btn-primary:hover{transform:translateY(-1px); box-shadow:0 6px 22px rgba(239,90,47,0.35);}
.btn-ghost{border-color:var(--line); color:var(--text); background:transparent;}
.btn-ghost:hover{border-color:var(--spec-5); color:var(--spec-5);}

.readout{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px 22px 18px; font-family:var(--mono); font-size:12.5px;
  box-shadow: 0 0 0 1px rgba(249,165,31,0.05), 0 20px 60px -30px rgba(201,58,122,0.4);
}
.readout-head{
  display:flex; justify-content:space-between; align-items:center;
  color:var(--text-faint); font-size:10.5px; letter-spacing:0.1em; text-transform:uppercase; margin-bottom:14px;
}
.readout-dot{width:7px; height:7px; border-radius:50%; background:var(--spec-4); box-shadow:0 0 8px var(--spec-4);}
.readout-row{display:flex; justify-content:space-between; padding:8px 0; border-top:1px solid var(--line); color:var(--text-dim);}
.readout-row span:last-child{color:var(--spec-5); text-align:right;}
.readout-row:first-of-type{border-top:none;}

section{padding:64px 0; scroll-margin-top:104px;}
section.tight{padding:44px 0;}
.section-head{margin-bottom:38px; max-width:64ch;}
.section-head h2{font-size:clamp(24px, 3vw, 32px); margin-top:10px;}
.section-head p{color:var(--text-dim); margin-top:12px; font-size:15.5px;}
.section-alt{background:var(--panel);}

#products{background:radial-gradient(ellipse 700px 400px at 90% 0%, rgba(201,58,122,0.06), transparent 60%);}
#about{background:radial-gradient(ellipse 700px 400px at 5% 0%, rgba(125,47,143,0.08), transparent 60%);}
#clients{background:var(--panel); position:relative;}
#contact{background:radial-gradient(ellipse 800px 420px at 50% 0%, rgba(249,165,31,0.08), transparent 60%);}

.grid{display:grid; gap:22px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-5{grid-template-columns:repeat(5,1fr);}

.card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px; transition:border-color .15s ease, transform .15s ease, box-shadow .15s ease;
  border-top:2px solid var(--card-accent, var(--spec-4));
}
.card:hover{border-color:var(--card-accent, var(--spec-4)); transform:translateY(-2px); box-shadow:0 14px 30px -20px var(--card-accent, var(--spec-4));}
.card h3{font-size:16.5px; margin-bottom:10px;}
.card p{color:var(--text-dim); font-size:14.5px;}
.card ul{margin-top:12px; padding-left:0; list-style:none;}
.card ul li{font-size:14px; color:var(--text-dim); padding:7px 0 7px 18px; border-top:1px solid var(--line); position:relative;}
.card ul li:first-child{border-top:none;}
.card ul li::before{content:''; position:absolute; left:0; top:15px; width:8px; height:2px; background:var(--card-accent, var(--spec-5));}

.card-index{font-family:var(--mono); font-size:11px; color:var(--card-accent, var(--spec-5)); letter-spacing:0.08em; margin-bottom:14px; display:block;}

.c-security{--card-accent:#f9a51f;}
.c-industry{--card-accent:#ef5a2f;}
.c-fire{--card-accent:#c93a7a;}
.c-medical{--card-accent:#7d2f8f;}
.c-research{--card-accent:#3a2472;}

.feature-list{list-style:none;}
.feature-list li{display:flex; gap:16px; padding:18px 0; border-top:1px solid var(--line);}
.feature-list li:first-child{border-top:none;}
.feature-mark{flex-shrink:0; width:3px; border-radius:2px; background:var(--fmark, var(--spec-4));}
.feature-list li:nth-child(1){--fmark:#f9a51f;}
.feature-list li:nth-child(2){--fmark:#ef5a2f;}
.feature-list li:nth-child(3){--fmark:#c93a7a;}
.feature-list li:nth-child(4){--fmark:#7d2f8f;}
.feature-list li:nth-child(5){--fmark:#3a2472;}
.feature-body strong{display:block; font-size:15px; margin-bottom:4px;}
.feature-body span{color:var(--text-dim); font-size:14px;}

.spec-table{width:100%; border-collapse:collapse; font-family:var(--mono); font-size:13.5px;}
.spec-table th, .spec-table td{text-align:left; padding:13px 16px; border-bottom:1px solid var(--line);}
.spec-table th{color:var(--spec-5); font-weight:500; text-transform:uppercase; font-size:11px; letter-spacing:0.08em;}
.spec-table td:last-child{color:var(--ge);}
.spec-table tr:hover td{background:rgba(249,165,31,0.05);}

.steps{display:grid; grid-template-columns:repeat(3,1fr); gap:0; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;}
.step{padding:28px 24px; border-left:1px solid var(--line); position:relative; border-top:3px solid var(--step-accent);}
.step:nth-child(1){--step-accent:#f9a51f;}
.step:nth-child(2){--step-accent:#ef5a2f;}
.step:nth-child(3){--step-accent:#c93a7a;}
.step:first-child{border-left:none;}
.step-num{font-family:var(--mono); font-size:12px; color:var(--step-accent); display:block; margin-bottom:10px;}
.step h4{font-size:15.5px; margin-bottom:8px;}
.step p{color:var(--text-dim); font-size:14px;}

.industry-row{display:grid; grid-template-columns:0.9fr 1.1fr; gap:0; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; margin-bottom:22px;}
.industry-row:nth-child(even) .industry-visual{order:2;}
.industry-visual{min-height:220px; position:relative; overflow:hidden;}
.industry-visual .scanlines{position:absolute; inset:0; background:repeating-linear-gradient(180deg, rgba(0,0,0,0.18) 0px, rgba(0,0,0,0.18) 1px, transparent 1px, transparent 3px); mix-blend-mode:multiply;}
.industry-visual .caption{position:absolute; left:16px; bottom:14px; font-family:var(--mono); font-size:11px; letter-spacing:0.06em; color:rgba(255,255,255,0.9); text-transform:uppercase; text-shadow:0 1px 6px rgba(0,0,0,0.5);}
.industry-body{padding:30px 32px; border-top:3px solid var(--ind-accent);}
.industry-body .num{font-family:var(--mono); color:var(--ind-accent); font-size:12px; display:block; margin-bottom:8px; font-weight:600;}
.industry-body h3{font-size:19px; margin-bottom:10px;}
.industry-body p{color:var(--text-dim); font-size:14.5px; margin-bottom:12px;}
.industry-body .benefit{font-family:var(--mono); font-size:12px; color:var(--ind-accent);}

.ind-security{--ind-accent:#f9a51f;}
.ind-industry{--ind-accent:#ef5a2f;}
.ind-medical{--ind-accent:#c93a7a;}
.ind-fire{--ind-accent:#e0472f;}
.ind-research{--ind-accent:#7d2f8f;}

.vis-security{background:radial-gradient(circle at 30% 30%, var(--spec-6), var(--spec-5) 25%, var(--spec-4) 45%, var(--spec-2) 70%, #0a0d10 100%);}
.vis-industry{background:radial-gradient(circle at 60% 40%, var(--spec-6), var(--spec-4) 30%, var(--spec-3) 55%, var(--spec-1) 80%, #0a0d10 100%);}
.vis-medical{background:radial-gradient(circle at 45% 55%, var(--spec-6), var(--spec-5) 20%, var(--spec-3) 45%, var(--spec-1) 75%, #0a0d10 100%);}
.vis-fire{background:radial-gradient(circle at 50% 70%, var(--spec-6), var(--spec-5) 18%, var(--spec-4) 38%, var(--spec-2) 62%, #0a0d10 100%);}
.vis-research{background:radial-gradient(circle at 40% 40%, var(--spec-6), var(--spec-3) 30%, var(--spec-2) 55%, var(--spec-1) 80%, #0a0d10 100%);}

.stat-strip{display:grid; grid-template-columns:repeat(4,1fr); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;}
.stat{padding:24px; border-left:1px solid var(--line); text-align:left; border-top:3px solid var(--stat-accent);}
.stat:nth-child(1){--stat-accent:#f9a51f;}
.stat:nth-child(2){--stat-accent:#ef5a2f;}
.stat:nth-child(3){--stat-accent:#c93a7a;}
.stat:nth-child(4){--stat-accent:#7d2f8f;}
.stat:first-child{border-left:none;}
.stat b{
  display:block; font-family:var(--display); font-size:26px; font-weight:700;
  background:linear-gradient(90deg, var(--spec-4), var(--spec-5), var(--spec-6));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.stat span{font-size:12.5px; color:var(--text-dim);}

.sector{border:1px solid var(--line); border-radius:var(--radius); padding:28px 30px; margin-bottom:20px; border-left:3px solid var(--sector-accent);}
.sector:nth-child(1){--sector-accent:#f9a51f;}
.sector:nth-child(2){--sector-accent:#ef5a2f;}
.sector:nth-child(3){--sector-accent:#c93a7a;}
.sector:nth-child(4){--sector-accent:#e0472f;}
.sector:nth-child(5){--sector-accent:#7d2f8f;}
.sector-head{display:flex; align-items:baseline; gap:14px; margin-bottom:14px; flex-wrap:wrap;}
.sector-head h3{font-size:18px;}
.sector-head .sector-num{font-family:var(--mono); font-size:12px; color:var(--sector-accent); font-weight:600;}
.sector p{color:var(--text-dim); font-size:14.5px; margin-bottom:14px;}
.sector .clients-list{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:16px;}
.sector .clients-list span{
  font-family:var(--mono); font-size:12px; color:var(--text-dim);
  border:1px solid var(--line); padding:5px 10px; border-radius:20px;
}
.sector .use-case{font-size:13.5px; padding-top:14px; border-top:1px solid var(--line);}
.sector .use-case b{color:var(--sector-accent); font-weight:600;}

.vm-grid{display:grid; grid-template-columns:1fr 1fr; gap:22px;}
.vm-card{border:1px solid var(--line); border-radius:var(--radius); padding:28px; background:var(--panel-2); border-top:3px solid var(--vm-accent, var(--spec-4));}
.vm-card:nth-of-type(1){--vm-accent:#f9a51f;}
.vm-card:nth-of-type(2){--vm-accent:#c93a7a;}
.vm-card .spectral-tick{margin-bottom:14px;}
.vm-card p{color:var(--text-dim); font-size:15px;}

.contact-grid{display:grid; grid-template-columns:0.9fr 1.1fr; gap:48px;}
.info-block{margin-bottom:26px;}
.info-block h4{font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:0.1em; color:var(--spec-5); margin-bottom:8px;}
.info-block p, .info-block a{font-size:15px; color:var(--text);}
.info-block a:hover{color:var(--spec-5);}

.form{background:var(--panel); border:1px solid var(--line); border-radius:var(--radius); padding:30px; border-top:3px solid var(--spec-4);}
.form-row{margin-bottom:18px;}
.form-row label{display:block; font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-faint); margin-bottom:8px;}
.form-row input, .form-row textarea{
  width:100%; background:var(--bg); border:1px solid var(--line); border-radius:var(--radius);
  padding:12px 14px; color:var(--text); font-family:var(--body); font-size:14.5px; resize:vertical;
}
.form-row input:focus, .form-row textarea:focus{outline:none; border-color:var(--spec-5); box-shadow:0 0 0 3px rgba(249,165,31,0.15);}
.form-note{font-size:12.5px; color:var(--text-faint); margin-top:6px;}

footer{border-top:1px solid var(--line); padding:34px 0;}
.footer-inner{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;}
.footer-inner p{font-size:12.5px; color:var(--text-faint);}
.footer-links{display:flex; gap:20px;}
.footer-links a{font-size:12.5px; color:var(--text-dim);}
.footer-links a:hover{color:var(--spec-5);}

.cta-band{
  border:1px solid var(--line); border-radius:var(--radius); padding:40px 42px; background:var(--panel);
  display:flex; justify-content:space-between; align-items:center; gap:24px; flex-wrap:wrap;
  border-image: var(--spectrum) 1;
  border-width: 1px 1px 1px 3px;
  border-style: solid;
}
.cta-band h3{font-size:22px; margin-bottom:6px;}
.cta-band p{color:var(--text-dim); font-size:14.5px;}

@media (max-width:920px){
  .hero-grid{grid-template-columns:1fr;}
  .grid-2, .grid-3, .grid-5{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr;}
  .step{border-left:none; border-top:3px solid var(--step-accent);}
  .industry-row{grid-template-columns:1fr;}
  .industry-row:nth-child(even) .industry-visual{order:0;}
  .industry-visual{min-height:160px;}
  .stat-strip{grid-template-columns:1fr 1fr;}
  .vm-grid, .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .header-inner{flex-direction:column; align-items:flex-start; gap:10px;}
  .contact-strip{align-items:flex-start;}
  .grid-2, .grid-3, .grid-5{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .stat{border-left:none;}
  .wrap{padding:0 20px;}
}