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

:root{
  --ink:        #0A0D12;
  --ink-2:      #0F141C;
  --panel:      #131A24;
  --panel-2:    #182131;
  --steel:      #1C2938;
  --line:       #2A3646;
  --line-soft:  rgba(255,255,255,0.08);
  --fog:        #8C9BAE;
  --fog-dim:    #5E6C7E;
  --white:      #EDF1F5;
  --cyan:       #3FD9C7;
  --cyan-dim:   rgba(63,217,199,0.14);
  --amber:      #F5A623;
  --amber-dim:  rgba(245,166,35,0.14);

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

  --container: 1200px;
  --radius: 4px;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--ink);
  color:var(--white);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
button{ font-family:inherit; cursor:pointer; border:none; background:none; color:inherit; }

@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-visible{ outline:2px solid var(--cyan); outline-offset:3px; }

.wrap{ max-width:var(--container); margin:0 auto; padding:0 32px; }

/* ---------- background circuit texture ---------- */
.grain-bg{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(63,217,199,0.05), transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(245,166,35,0.04), transparent 45%);
}

/* ---------- eyebrow / labels ---------- */
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--cyan);
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--cyan);
}

h1,h2,h3,h4,h5{
  font-family:var(--display);
  font-weight:600;
  line-height:1.12;
  letter-spacing:-0.01em;
  color:var(--white);
}
h1{ font-size:clamp(2.6rem, 5vw, 4.4rem); font-weight:700; }
h2{ font-size:clamp(1.9rem, 3.4vw, 2.8rem); }
h3{ font-size:1.3rem; }
p{ color:var(--fog); }
.lede{ font-size:1.15rem; color:var(--fog); max-width:640px; }

.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono); font-size:13px; letter-spacing:0.06em; text-transform:uppercase;
  padding:15px 28px;
  border-radius:2px;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--cyan); color:#04211D; font-weight:500;
}
.btn-primary:hover{ background:#5CE8D8; transform:translateY(-1px); }
.btn-ghost{
  border:1px solid var(--line);
  color:var(--white);
}
.btn-ghost:hover{ border-color:var(--cyan); color:var(--cyan); }
.btn-arrow{ transition:transform .2s ease; }
.btn:hover .btn-arrow{ transform:translateX(3px); }

/* ============================================
   HEADER
   ============================================ */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(10,13,18,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 32px;
  max-width:var(--container); margin:0 auto;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-family:var(--display); font-weight:700; font-size:1.25rem; color:var(--white);
}
.logo .mark{
  width:30px; height:30px;
  border:1.5px solid var(--cyan);
  border-radius:50%;
  position:relative;
  display:grid; place-items:center;
}
.logo .mark::before{
  content:"";
  width:8px; height:8px;
  background:var(--cyan);
  border-radius:50%;
  box-shadow:0 0 10px var(--cyan);
}
.logo .sub{ font-family:var(--mono); font-size:10px; color:var(--fog-dim); letter-spacing:0.1em; display:block; margin-top:-2px; }

.main-nav{ display:flex; align-items:center; gap:2px; }
.main-nav a{
  font-family:var(--mono); font-size:12.5px; letter-spacing:0.03em;
  padding:10px 16px; color:var(--fog);
  transition:color .2s ease;
  position:relative;
}
.main-nav a:hover, .main-nav a.active{ color:var(--white); }
.main-nav a.active::after{
  content:"";
  position:absolute; bottom:2px; left:16px; right:16px; height:1px;
  background:var(--cyan);
}
.header-cta{ display:flex; align-items:center; gap:18px; }
.nav-toggle{ display:none; }

@media (max-width: 980px){
  .main-nav{
    position:fixed; inset:70px 0 0 0; background:var(--ink);
    flex-direction:column; align-items:flex-start; padding:24px 32px;
    gap:4px; transform:translateX(100%); transition:transform .3s ease;
    overflow-y:auto;
  }
  .main-nav.open{ transform:translateX(0); }
  .main-nav a{ padding:14px 0; width:100%; border-bottom:1px solid var(--line-soft); font-size:14px; }
  .nav-toggle{
    display:grid; place-items:center; width:34px; height:34px;
    color:var(--white); font-size:20px;
  }
  .header-cta .btn-primary{ display:none; }
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer{
  border-top:1px solid var(--line-soft);
  background:var(--ink-2);
  padding:72px 0 28px;
  position:relative; z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid var(--line-soft);
}
.footer-grid h4{
  font-family:var(--mono); font-size:12px; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--fog-dim); margin-bottom:20px; font-weight:500;
}
.footer-grid p{ font-size:14px; max-width:280px; }
.footer-grid li{ margin-bottom:12px; }
.footer-grid a{ font-size:14px; color:var(--fog); transition:color .2s; }
.footer-grid a:hover{ color:var(--cyan); }
.footer-social{ display:flex; gap:12px; margin-top:20px; }
.footer-social a{
  width:34px; height:34px; border:1px solid var(--line); border-radius:50%;
  display:grid; place-items:center; font-size:13px;
}
.footer-social a:hover{ border-color:var(--cyan); color:var(--cyan); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:24px; font-size:13px; color:var(--fog-dim); flex-wrap:wrap; gap:12px;
}
.footer-office{ margin-bottom:16px; }
.footer-office strong{ color:var(--white); font-size:14px; display:block; margin-bottom:4px; }
.footer-office span{ font-size:13px; color:var(--fog); display:block; }

@media (max-width: 900px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width: 560px){
  .footer-grid{ grid-template-columns:1fr; }
}

/* ============================================
   PAGE HEADER (interior pages)
   ============================================ */
.page-head{
  padding:160px 0 80px;
  position:relative;
  border-bottom:1px solid var(--line-soft);
  background:
    linear-gradient(180deg, rgba(63,217,199,0.05), transparent 60%);
}
.page-head .crumb{
  font-family:var(--mono); font-size:12px; color:var(--fog-dim); margin-bottom:20px;
}
.page-head .crumb a{ color:var(--fog); }
.page-head .crumb a:hover{ color:var(--cyan); }
.page-head p.lede{ margin-top:20px; }

/* ============================================
   SECTION UTILITIES
   ============================================ */
section{ position:relative; z-index:1; padding:110px 0; }
.section-tight{ padding:80px 0; }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.divider{ height:1px; background:var(--line-soft); border:none; }

.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:32px; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:28px; }

@media (max-width: 900px){
  .grid-2, .grid-3, .grid-4{ grid-template-columns:1fr; }
}
@media (max-width: 1100px) and (min-width: 901px){
  .grid-4{ grid-template-columns:repeat(2,1fr); }
}

/* card */
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px;
  transition:border-color .25s ease, transform .25s ease;
}
.card:hover{ border-color:rgba(63,217,199,0.4); transform:translateY(-3px); }
.card .icon{
  width:46px; height:46px; border-radius:50%;
  border:1px solid var(--cyan-dim);
  background:var(--cyan-dim);
  display:grid; place-items:center;
  color:var(--cyan); font-size:20px;
  margin-bottom:20px;
}
.card h3{ margin-bottom:10px; font-size:1.15rem; }
.card p{ font-size:14.5px; }

.tag{
  display:inline-block; font-family:var(--mono); font-size:11px; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--amber); background:var(--amber-dim);
  padding:5px 12px; border-radius:2px; margin-bottom:14px;
}

/* numbered index for real sequences */
.step-num{
  font-family:var(--mono); font-size:13px; color:var(--fog-dim);
}

/* stat row */
.stat-row{ display:flex; gap:56px; flex-wrap:wrap; margin-top:36px; }
.stat b{
  display:block; font-family:var(--display); font-size:2.4rem; color:var(--cyan); font-weight:600;
}
.stat span{ font-family:var(--mono); font-size:12px; color:var(--fog-dim); letter-spacing:0.04em; }

/* CTA band */
.cta-band{
  background:var(--panel-2);
  border:1px solid var(--line);
  border-radius:6px;
  padding:64px;
  display:flex; align-items:center; justify-content:space-between; gap:40px; flex-wrap:wrap;
  position:relative; overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute; top:-40%; right:-10%; width:400px; height:400px;
  background:radial-gradient(circle, rgba(63,217,199,0.12), transparent 70%);
}
.cta-band h2{ font-size:clamp(1.7rem,2.6vw,2.3rem); max-width:520px; }

/* logo strip */
.logo-strip{
  display:flex; gap:64px; flex-wrap:wrap; align-items:center; justify-content:center;
  padding:36px 0; opacity:0.7;
}
.logo-strip span{ font-family:var(--mono); font-size:13px; letter-spacing:0.08em; color:var(--fog-dim); text-transform:uppercase; }

/* team / people card */
.person{
  text-align:left;
}
.person .photo{
  width:100%; aspect-ratio:1; border-radius:4px;
  background:var(--panel); border:1px solid var(--line);
  margin-bottom:18px;
  display:grid; place-items:center;
  overflow:hidden;
  position:relative;
}
.person .photo .initials{
  font-family:var(--display); font-size:2.2rem; color:var(--fog-dim);
}
.person .photo::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(160deg, rgba(63,217,199,0.08), transparent 60%);
}
.person h4{ font-family:var(--display); font-size:1.05rem; margin-bottom:4px; color:var(--white); font-weight:600; }
.person span{ font-family:var(--mono); font-size:12px; color:var(--cyan); letter-spacing:0.02em; }

/* fade-in on scroll */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:none; }

/* pipeline / signature motif */
.pipeline{
  display:flex; align-items:center; gap:0; margin-top:20px; flex-wrap:wrap;
}
.pipeline .node{
  font-family:var(--mono); font-size:12px; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--white); border:1px solid var(--line); padding:10px 18px; border-radius:20px;
  background:var(--panel);
  position:relative;
}
.pipeline .node.active{ border-color:var(--cyan); color:var(--cyan); box-shadow:0 0 16px rgba(63,217,199,0.25); }
.pipeline .connector{
  width:34px; height:1px; background:linear-gradient(90deg, var(--line), var(--cyan));
  position:relative;
}
.pipeline .connector::after{
  content:"";
  position:absolute; right:0; top:-2px; width:5px; height:5px; border-radius:50%;
  background:var(--cyan); box-shadow:0 0 8px var(--cyan);
}

/* form */
.form-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:6px;
  padding:40px;
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-bottom:18px; }
.field label{
  display:block; font-family:var(--mono); font-size:11px; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--fog-dim); margin-bottom:8px;
}
.field input, .field select, .field textarea{
  width:100%; background:var(--ink); border:1px solid var(--line); border-radius:2px;
  padding:13px 14px; color:var(--white); font-family:var(--body); font-size:14px;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--cyan); outline:none; }
.field textarea{ min-height:120px; resize:vertical; }
@media (max-width:640px){ .form-row{ grid-template-columns:1fr; } }

/* responsive base sections */
@media (max-width:640px){
  section{ padding:70px 0; }
  .page-head{ padding:130px 0 56px; }
  .cta-band{ padding:36px; flex-direction:column; align-items:flex-start; }
  .wrap{ padding:0 20px; }
}