/* ===== Tokens ===== */
:root{
  --ink: #080B0F;
  --panel: #0F151C;
  --panel-2: #141C25;
  --line: #232E39;
  --blueprint: #4FA3D1;
  --blueprint-dim: #2C5A73;
  --amber: #E8A33D;
  --text: #E7ECF1;
  --text-dim: #8695A3;
  --text-faint: #4E5C68;

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

  --max: 1180px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:var(--font-display);margin:0;font-weight:600;letter-spacing:-0.01em;}
p{margin:0;color:var(--text-dim);}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}

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

/* subtle film grain / blueprint paper texture */
.grain{
  position:fixed; inset:0; pointer-events:none; z-index:1;
  background-image:
    linear-gradient(rgba(79,163,209,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,163,209,0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 0%, transparent 70%);
}

/* ===== Nav ===== */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(8,11,15,0.72);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--max); margin:0 auto; padding:18px 32px;
  display:flex; align-items:center; justify-content:space-between;
}
.brand{display:flex; align-items:center; gap:10px;}
.brand-mark{
  width:30px;height:30px; border:1px solid var(--blueprint);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:14px; color:var(--blueprint);
}
.brand-name{font-family:var(--font-mono); font-size:14px; letter-spacing:0.18em;}
.nav-links{display:flex; align-items:center; gap:32px; font-size:14px;}
.nav-links a{color:var(--text-dim); transition:color .2s;}
.nav-links a:hover{color:var(--text);}
.nav-cta{
  color:var(--ink) !important; background:var(--blueprint);
  padding:9px 16px; font-family:var(--font-mono); font-size:13px;
}
.nav-cta:hover{background:#69b6dd;}
.nav-toggle{display:none; background:none; border:none; cursor:pointer; flex-direction:column; gap:5px; padding:6px;}
.nav-toggle span{width:22px; height:2px; background:var(--text);}

/* ===== Hero ===== */
.hero{
  position:relative; padding:168px 32px 60px; max-width:var(--max); margin:0 auto;
  z-index:2;
}
.eyebrow{
  font-family:var(--font-mono); font-size:12px; letter-spacing:0.16em;
  text-transform:uppercase; color:var(--blueprint); margin-bottom:18px;
}
.hero-title{
  font-size:clamp(2.4rem, 5.6vw, 4.6rem); line-height:1.04; max-width:820px;
}
.ink{color:var(--blueprint);}
.hero-sub{
  margin-top:24px; max-width:560px; font-size:17px; color:var(--text-dim);
}
.hero-actions{display:flex; gap:16px; margin-top:40px; flex-wrap:wrap;}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 26px; font-family:var(--font-mono); font-size:13px;
  letter-spacing:0.04em; border:1px solid transparent; transition:all .2s;
}
.btn-primary{background:var(--blueprint); color:var(--ink);}
.btn-primary:hover{background:#69b6dd;}
.btn-ghost{border-color:var(--line); color:var(--text);}
.btn-ghost:hover{border-color:var(--blueprint); color:var(--blueprint);}

/* Schematic */
.schematic-wrap{margin-top:80px; border-top:1px solid var(--line); padding-top:36px;}
.schematic{width:100%; height:auto; display:block;}
.s-line{
  fill:none; stroke:var(--blueprint-dim); stroke-width:1.5;
  stroke-dasharray:200; stroke-dashoffset:200;
  animation:draw 900ms ease forwards;
}
.s-line:nth-of-type(1){animation-delay:.2s;}
.schematic path.s-line:nth-child(2){animation-delay:.6s;}
.schematic path.s-line:nth-child(3){animation-delay:1.0s;}
.schematic path.s-line:nth-child(4){animation-delay:1.4s;}
@keyframes draw{to{stroke-dashoffset:0;}}

.s-node rect{
  fill:var(--panel); stroke:var(--blueprint); stroke-width:1.2;
  opacity:0; transform:scale(.94); transform-origin:center;
  animation:pop .5s ease forwards;
}
.s-node:nth-of-type(1) rect{animation-delay:0s;}
.s-node:nth-of-type(2) rect{animation-delay:.5s;}
.s-node:nth-of-type(3) rect{animation-delay:1.0s;}
.s-node:nth-of-type(4) rect{animation-delay:1.5s;}
.s-node-cloud rect{stroke:var(--amber);}
@keyframes pop{to{opacity:1; transform:scale(1);}}

.s-label{
  font-family:var(--font-mono); font-size:13px; letter-spacing:.06em;
  fill:var(--text); text-anchor:middle;
  opacity:0; animation:fadeText .4s ease forwards;
}
.s-sublabel{
  font-family:var(--font-mono); font-size:10px;
  fill:var(--text-faint); text-anchor:middle;
  opacity:0; animation:fadeText .4s ease forwards;
}
.s-node:nth-of-type(1) .s-label, .s-node:nth-of-type(1) .s-sublabel{animation-delay:.3s;}
.s-node:nth-of-type(2) .s-label, .s-node:nth-of-type(2) .s-sublabel{animation-delay:.8s;}
.s-node:nth-of-type(3) .s-label, .s-node:nth-of-type(3) .s-sublabel{animation-delay:1.3s;}
.s-node:nth-of-type(4) .s-label, .s-node:nth-of-type(4) .s-sublabel{animation-delay:1.8s;}
@keyframes fadeText{to{opacity:1;}}

.schematic-caption{
  display:flex; justify-content:space-between; margin-top:14px;
  font-family:var(--font-mono); font-size:11px; letter-spacing:.1em;
  color:var(--text-faint); padding:0 4px;
}

/* ===== Stats ===== */
.stats{border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--panel);}
.stats-inner{
  max-width:var(--max); margin:0 auto; padding:52px 32px;
  display:grid; grid-template-columns:repeat(4,1fr); gap:32px;
}
.stat{display:flex; flex-direction:column; gap:6px;}
.stat-num{font-family:var(--font-display); font-size:2.6rem; color:var(--blueprint); font-weight:600;}
.stat-suffix{font-family:var(--font-display); font-size:2.6rem; color:var(--blueprint); font-weight:600;}
.stat-label{font-size:13px; color:var(--text-dim); max-width:200px;}

/* ===== Section shared ===== */
section{padding:100px 32px;}
.section-head{max-width:var(--max); margin:0 auto 52px;}
.section-head h2{font-size:clamp(1.7rem,3vw,2.4rem); max-width:640px; margin-top:12px;}
.section-sub{margin-top:14px; font-size:14.5px; max-width:560px;}

/* Services */
.service-grid{
  max-width:var(--max); margin:0 auto; display:grid;
  grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line);
  border:1px solid var(--line);
}
.service-card{background:var(--ink); padding:32px 26px; transition:background .2s;}
.service-card:hover{background:var(--panel);}
.service-index{font-family:var(--font-mono); color:var(--blueprint); font-size:13px;}
.service-card h3{font-size:1.1rem; margin-top:18px;}
.service-card p{margin-top:12px; font-size:14px;}

/* Approach */
.approach{background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.approach-list{max-width:var(--max); margin:0 auto;}
.approach-row{
  display:grid; grid-template-columns:90px 1fr; gap:28px;
  padding:28px 0; border-top:1px solid var(--line);
}
.approach-row:last-child{border-bottom:1px solid var(--line);}
.approach-num{font-family:var(--font-mono); color:var(--text-faint); font-size:14px; padding-top:4px;}
.approach-body h3{font-size:1.2rem;}
.approach-body p{margin-top:10px; max-width:600px;}

/* Industries */
.industry-grid{max-width:var(--max); margin:0 auto; display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.industry-card{border:1px solid var(--line); padding:26px 22px;}
.industry-card h3{font-size:1.02rem; color:var(--blueprint);}
.industry-card p{margin-top:10px; font-size:13.5px;}

/* Work */
.work-grid{max-width:var(--max); margin:0 auto; display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.work-card{border:1px solid var(--line); padding:28px 24px; background:var(--panel-2);}
.work-tag{font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; color:var(--amber);}
.work-card h3{font-size:1.08rem; margin-top:14px;}
.work-card p{margin-top:12px; font-size:14px;}
.work-note{max-width:var(--max); margin:28px auto 0; font-size:12.5px; color:var(--text-faint); font-family:var(--font-mono);}

/* Contact */
.contact{text-align:center;}
.contact-inner{max-width:640px; margin:0 auto;}
.contact h2{font-size:clamp(1.8rem,4vw,2.6rem); margin-top:12px;}
.contact-sub{margin-top:18px; font-size:16px;}
.contact-actions{margin-top:34px;}
.contact-meta{margin-top:22px; font-size:13px; color:var(--text-faint);}

/* Footer */
.footer{border-top:1px solid var(--line); padding:28px 32px;}
.footer-inner{
  max-width:var(--max); margin:0 auto; display:flex; justify-content:space-between;
  font-size:13px; color:var(--text-faint); font-family:var(--font-mono);
}
.footer-links{display:flex; gap:20px;}
.footer-links a:hover{color:var(--text-dim);}

/* Scroll reveal */
.reveal{opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1; transform:translateY(0);}

/* ===== Responsive ===== */
@media (max-width: 900px){
  .nav-links{
    position:fixed; top:64px; left:0; right:0; bottom:0;
    background:var(--ink); flex-direction:column; align-items:flex-start;
    padding:32px; gap:24px; transform:translateX(100%); transition:transform .3s ease;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-toggle{display:flex;}
  .stats-inner{grid-template-columns:repeat(2,1fr);}
  .service-grid{grid-template-columns:repeat(2,1fr);}
  .industry-grid{grid-template-columns:repeat(2,1fr);}
  .work-grid{grid-template-columns:1fr;}
  .approach-row{grid-template-columns:50px 1fr;}
}
@media (max-width: 560px){
  .stats-inner{grid-template-columns:1fr 1fr; gap:24px;}
  .service-grid{grid-template-columns:1fr;}
  .industry-grid{grid-template-columns:1fr;}
  .schematic-caption span:nth-child(2), .schematic-caption span:nth-child(3){opacity:.6;}
}

/* ===== Tabs (Capability Explorer) ===== */
.tabs{
  max-width:var(--max); margin:0 auto 0; display:flex; flex-wrap:wrap; gap:8px;
  border-bottom:1px solid var(--line); padding-bottom:0;
}
.tab-btn{
  background:none; border:1px solid var(--line); border-bottom:none;
  color:var(--text-dim); font-family:var(--font-mono); font-size:12.5px;
  padding:12px 18px; cursor:pointer; transition:all .2s;
}
.tab-btn:hover{color:var(--text);}
.tab-btn.active{color:var(--ink); background:var(--blueprint); border-color:var(--blueprint);}
.tab-panels{max-width:var(--max); margin:0 auto; border:1px solid var(--line); border-top:none; padding:36px;}
.tab-panel{display:none;}
.tab-panel.active{display:block; animation:fadeIn .35s ease;}
@keyframes fadeIn{from{opacity:0; transform:translateY(6px);} to{opacity:1; transform:translateY(0);}}
.panel-intro{font-size:15px; margin-bottom:20px; max-width:640px;}
.chip-row{display:flex; flex-wrap:wrap; gap:10px;}
.chip{
  font-family:var(--font-mono); font-size:12px; color:var(--text);
  border:1px solid var(--line); padding:7px 14px; background:var(--panel);
}

/* ===== AI Agent flip cards ===== */
.agents{background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.agent-grid{
  max-width:var(--max); margin:0 auto; display:grid;
  grid-template-columns:repeat(4,1fr); gap:20px;
}
.agent-card{
  position:relative; height:220px; perspective:1200px; cursor:pointer;
}
.agent-face, .agent-back{
  position:absolute; inset:0; backface-visibility:hidden;
  border:1px solid var(--line); padding:22px; background:var(--ink);
  transition:transform .5s ease;
}
.agent-face{transform:rotateY(0deg); display:flex; flex-direction:column;}
.agent-back{
  transform:rotateY(180deg); background:var(--panel-2); overflow-y:auto;
}
.agent-card.flipped .agent-face{transform:rotateY(-180deg);}
.agent-card.flipped .agent-back{transform:rotateY(0deg);}
.agent-tag{font-family:var(--font-mono); font-size:10.5px; color:var(--amber); letter-spacing:.05em;}
.agent-face h3{font-size:1rem; margin-top:12px;}
.agent-face p{font-size:13px; margin-top:10px;}
.agent-flip-hint{
  margin-top:auto; font-family:var(--font-mono); font-size:10.5px; color:var(--blueprint);
}
.agent-back h4{
  font-family:var(--font-mono); font-size:10.5px; letter-spacing:.06em;
  color:var(--blueprint); margin:0 0 8px; text-transform:uppercase;
}
.agent-back ul{margin:0 0 14px; padding-left:16px;}
.agent-back li{font-size:12.5px; color:var(--text-dim); margin-bottom:4px;}
.agent-back p{font-size:12px; color:var(--text-faint);}

/* ===== Training ===== */
.training-grid{
  max-width:var(--max); margin:0 auto; display:grid;
  grid-template-columns:repeat(4,1fr); gap:24px;
}
.training-card{border:1px solid var(--line); padding:26px 22px; background:var(--panel-2);}
.training-card h3{font-size:1.02rem; color:var(--blueprint);}
.training-card p{margin-top:10px; font-size:13.5px;}

/* ===== Work filter buttons ===== */
.filter-row{
  max-width:var(--max); margin:0 auto 32px; display:flex; flex-wrap:wrap; gap:10px;
}
.filter-btn{
  background:none; border:1px solid var(--line); color:var(--text-dim);
  font-family:var(--font-mono); font-size:12px; padding:9px 16px; cursor:pointer;
  transition:all .2s;
}
.filter-btn:hover{color:var(--text);}
.filter-btn.active{background:var(--blueprint); color:var(--ink); border-color:var(--blueprint);}
.work-card{display:block; transition:opacity .3s ease, transform .3s ease;}
.work-card.hidden{display:none;}

/* ===== Responsive additions ===== */
@media (max-width: 900px){
  .agent-grid{grid-template-columns:repeat(2,1fr);}
  .training-grid{grid-template-columns:repeat(2,1fr);}
  .tab-btn{font-size:11.5px; padding:10px 14px;}
  .tab-panels{padding:26px 20px;}
}
@media (max-width: 560px){
  .agent-grid{grid-template-columns:1fr;}
  .training-grid{grid-template-columns:1fr;}
  .agent-card{height:200px;}
}