/* =========================================================================
   Tracgen Suite — landing site
   Brand carried 1:1 from the tracgen / tracgen-cad repos.
   ========================================================================= */

:root {
  --canvas:#0e1116; --panel:#161b22; --panel2:#1e242c; --edge:#2b323c;
  --ink:#e6edf3; --muted:#8b949e; --accent:#2dd4bf; --warn:#f59e0b;
  --error:#ef4444; --ok:#34d399;
  --grid:rgba(45,212,191,0.055); --accent-soft:rgba(45,212,191,0.13);
  --glow:rgba(45,212,191,0.20); --navbg:rgba(14,17,22,0.72);
  --stripe:rgba(139,148,158,0.10);
  --on-accent:#062722;
}
:root.theme-light {
  --canvas:#f6f8fa; --panel:#ffffff; --panel2:#eff2f5; --edge:#d0d7de;
  --ink:#1f2328; --muted:#57606a;
  --grid:rgba(45,212,191,0.11); --accent-soft:rgba(45,212,191,0.12);
  --glow:rgba(45,212,191,0.16); --navbg:rgba(246,248,250,0.80);
  --stripe:rgba(87,96,106,0.09);
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
html{ scroll-behavior:smooth; scroll-padding-top:84px; }
body{ background:var(--canvas); }
[hidden]{ display:none !important; }
::selection{ background:var(--accent-soft); color:var(--ink); }

@keyframes tg-glow{ 0%,100%{ opacity:.5; } 50%{ opacity:.95; } }
@keyframes tg-dash{ to{ stroke-dashoffset:-40; } }

.page{
  background:var(--canvas);
  color:var(--ink);
  font-family:'Inter', system-ui, -apple-system, sans-serif;
  min-height:100vh;
  overflow-x:hidden;
}

/* ---------- Shared brand bits ---------- */
.wordmark{ font-weight:700; font-size:19px; letter-spacing:-0.02em; }
.wordmark .gen{ color:var(--accent); }
.wordmark .cad{ color:var(--muted); }
.wordmark-lg{ font-size:24px; }

.tag{
  font-family:'JetBrains Mono', monospace; font-size:10px; letter-spacing:0.18em;
  text-transform:uppercase; color:var(--muted);
  border:1px solid var(--edge); border-radius:5px; padding:3px 7px;
}

.kicker{
  font-family:'JetBrains Mono', monospace; font-size:12px; letter-spacing:0.16em;
  text-transform:uppercase; color:var(--accent); margin-bottom:14px;
}

.accent{ color:var(--accent); }
.strong{ font-weight:600; }
.ta-right{ text-align:right; }

.section-title{
  font-size:clamp(30px,3.6vw,46px); line-height:1.05; letter-spacing:-0.025em;
  font-weight:700; margin:0;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px; text-decoration:none;
  font-weight:600; border-radius:10px; cursor:pointer; transition:filter .15s ease, transform .15s ease, border-color .15s ease;
  font-family:'Inter', sans-serif;
}
.btn-sm{ font-size:14px; padding:9px 18px; border-radius:9px; }
.btn-lg{ font-size:15px; padding:13px 24px; }
.btn-accent{ background:var(--accent); color:var(--on-accent); border:1px solid var(--accent); }
.btn-accent:hover{ filter:brightness(1.08); }
.btn-glow{ box-shadow:0 8px 28px -10px var(--accent); }
.btn-glow:hover{ transform:translateY(-1px); }
.btn-ghost{ background:var(--panel); color:var(--ink); border:1px solid var(--edge); }
.btn-ghost:hover{ border-color:var(--muted); }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  background:var(--navbg); border-bottom:1px solid var(--edge);
}
.header-inner{
  max-width:1200px; margin:0 auto; padding:14px 32px;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.brand{ display:flex; align-items:center; gap:11px; text-decoration:none; color:var(--ink); }
.main-nav{ display:flex; align-items:center; gap:30px; font-size:14px; }
.main-nav a{ text-decoration:none; color:var(--muted); font-weight:500; transition:color .15s ease; }
.main-nav a:hover{ color:var(--ink); }
.header-actions{ display:flex; align-items:center; gap:12px; }

.theme-toggle{
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:9px;
  border:1px solid var(--edge); background:var(--panel2); color:var(--ink);
  cursor:pointer; transition:border-color .15s ease;
}
.theme-toggle:hover{ border-color:var(--muted); }
.theme-toggle .icon-sun{ display:none; }
:root.theme-light .theme-toggle .icon-moon{ display:none; }
:root.theme-light .theme-toggle .icon-sun{ display:inline; }

/* ---------- Hero ---------- */
.hero{ position:relative; overflow:hidden; border-bottom:1px solid var(--edge); }
.hero-grid{
  position:absolute; inset:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 78%);
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 78%);
}
.hero-glow{
  position:absolute; top:-180px; left:50%; transform:translateX(-50%);
  width:780px; height:520px; background:radial-gradient(closest-side,var(--glow),transparent);
  pointer-events:none;
}
.hero-inner{
  position:relative; max-width:1200px; margin:0 auto; padding:96px 32px 104px;
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:center;
}
.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-family:'JetBrains Mono', monospace; font-size:11.5px; letter-spacing:0.16em;
  text-transform:uppercase; color:var(--accent);
  border:1px solid var(--edge); background:var(--panel); border-radius:999px;
  padding:6px 13px; margin-bottom:26px;
}
.eyebrow-dot{
  width:7px; height:7px; border-radius:50%; background:var(--accent);
  box-shadow:0 0 10px var(--accent); animation:tg-glow 2.4s ease-in-out infinite;
}
.hero-title{
  font-size:clamp(38px,5vw,62px); line-height:1.02; letter-spacing:-0.03em;
  font-weight:700; margin:0 0 22px;
}
.hero-lede{ font-size:19px; line-height:1.6; color:var(--muted); max-width:540px; margin:0 0 34px; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:14px; margin-bottom:46px; }

.stat-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  border:1px solid var(--edge); border-radius:12px; background:var(--panel); overflow:hidden;
}
.stat{ padding:16px 18px; border-right:1px solid var(--edge); }
.stat-last{ border-right:none; }
.stat-num{ font-size:26px; font-weight:700; letter-spacing:-0.02em; }
.stat-num.accent{ color:var(--accent); }
.stat-label{
  font-family:'JetBrains Mono', monospace; font-size:10.5px; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--muted); margin-top:3px;
}

/* hero visual */
.hero-visual{ position:relative; min-height:380px; }
.frame{ border:1px solid var(--edge); border-radius:14px; background:var(--panel); overflow:hidden; }
.frame-pcb{
  position:absolute; top:0; right:0; width:86%; border-radius:14px;
  box-shadow:0 30px 60px -30px rgba(0,0,0,0.55);
}
.frame-cad{
  position:absolute; bottom:0; left:0; width:54%; border-radius:12px;
  box-shadow:0 26px 50px -28px rgba(0,0,0,0.6);
}
.frame-bar{
  display:flex; align-items:center; gap:8px; padding:10px 14px;
  border-bottom:1px solid var(--edge); background:var(--panel2);
}
.frame-cad .frame-bar{ padding:9px 12px; }
.dot{ width:9px; height:9px; border-radius:50%; opacity:.7; }
.dot-error{ background:var(--error); }
.dot-warn{ background:var(--warn); }
.dot-ok{ background:var(--ok); }
.frame-file{
  margin-left:8px; font-family:'JetBrains Mono', monospace; font-size:11px; color:var(--muted);
}
.frame-cad .frame-file{ margin-left:0; font-size:10.5px; }
.frame-body{
  position:relative; display:flex; align-items:center; justify-content:center;
}
.frame-body-pcb{
  height:230px;
  background:repeating-linear-gradient(135deg,var(--stripe),var(--stripe) 11px,transparent 11px,transparent 22px);
}
.frame-body-cad{
  height:140px;
  background:repeating-linear-gradient(45deg,var(--stripe),var(--stripe) 10px,transparent 10px,transparent 20px);
}
.trace-svg{ position:absolute; inset:0; opacity:.9; }
.trace-dash{ animation:tg-dash 1.6s linear infinite; }
.trace-dash-2{ animation-duration:2.1s; }
.trace-dash-3{ animation-duration:1.9s; }
.cad-svg{ position:absolute; opacity:.7; }
.frame-note{
  position:relative; font-family:'JetBrains Mono', monospace; font-size:11px; color:var(--muted);
  background:var(--panel); border:1px solid var(--edge); border-radius:6px; padding:5px 9px;
}
.frame-note-sm{ font-size:10px; border:none; background:transparent; padding:0; }
.frame-shot{ display:block; width:100%; height:100%; object-fit:cover; object-position:center; }
.frame-body-pcb .frame-shot{ object-position:center top; }

/* ---------- Generic section ---------- */
.section{ max-width:1200px; margin:0 auto; padding:104px 32px; }
.section-head{ margin-bottom:44px; }
.section-head .section-title{ max-width:620px; }
.section-head-split{
  display:flex; align-items:flex-end; justify-content:space-between; gap:24px;
  flex-wrap:wrap; margin-bottom:44px;
}
.section-head-split .section-title{ max-width:640px; }
.section-aside{ font-size:15px; line-height:1.6; color:var(--muted); max-width:330px; margin:0; }

/* ---------- Products ---------- */
.product-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.product-card{
  border:1px solid var(--edge); border-radius:16px; background:var(--panel);
  padding:30px; display:flex; flex-direction:column; transition:border-color .15s ease;
}
.product-card:hover{ border-color:var(--accent); }
.product-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
.pill{
  font-family:'JetBrains Mono', monospace; font-size:10.5px; letter-spacing:0.12em;
  text-transform:uppercase; color:var(--muted);
  border:1px solid var(--edge); border-radius:999px; padding:4px 11px;
}
.product-lead{ font-size:15.5px; line-height:1.62; color:var(--ink); margin:0 0 8px; font-weight:500; }
.product-desc{ font-size:14.5px; line-height:1.62; color:var(--muted); margin:0 0 22px; }
.chip-row{ display:flex; flex-wrap:wrap; gap:7px; margin-bottom:22px; }
.chip{
  font-family:'JetBrains Mono', monospace; font-size:11px; color:var(--ink);
  background:var(--panel2); border:1px solid var(--edge); border-radius:6px; padding:5px 9px;
}
.product-cta{ align-self:flex-start; margin-bottom:4px; }
.product-foot{
  margin-top:auto; padding-top:18px; border-top:1px solid var(--edge);
  font-family:'JetBrains Mono', monospace; font-size:11px; color:var(--muted); line-height:1.7;
}

/* ---------- Pipeline ---------- */
.pipeline-section{
  border-top:1px solid var(--edge); border-bottom:1px solid var(--edge); background:var(--panel);
}
.pipeline-inner{ max-width:1200px; margin:0 auto; padding:104px 32px; }
.pipeline-head{ text-align:center; max-width:660px; margin:0 auto 50px; }
.pipeline-head .section-title{ margin-bottom:18px; }
.pipeline-sub{ font-size:16px; line-height:1.62; color:var(--muted); margin:0; }

.pipeline-table{ border:1px solid var(--edge); border-radius:14px; overflow:hidden; background:var(--canvas); }
.pipeline-row{
  display:grid; grid-template-columns:64px 1fr 1fr 150px; align-items:center;
  padding:14px 20px; border-bottom:1px solid var(--edge);
}
.pipeline-row-head{
  padding:12px 20px; background:var(--panel2);
  font-family:'JetBrains Mono', monospace; font-size:10.5px; letter-spacing:0.1em;
  text-transform:uppercase; color:var(--muted);
}
.pipeline-row-head .gen{ color:var(--accent); }
.pipeline-row-head .cad{ color:var(--muted); }
.cell{ font-size:14.5px; font-weight:500; color:var(--ink); }
.stage-num{
  display:inline-flex; align-items:center; justify-content:center;
  width:30px; height:30px; border-radius:8px;
  font-family:'JetBrains Mono', monospace; font-size:12px;
}
.stage-num.plain{ background:var(--panel2); border:1px solid var(--edge); color:var(--muted); }
.stage-num.gate{ background:var(--accent); color:var(--on-accent); font-weight:600; }
.gate-pill{
  font-family:'JetBrains Mono', monospace; font-size:10.5px; letter-spacing:0.06em;
  text-transform:uppercase; color:var(--accent);
  border:1px solid var(--accent); background:var(--accent-soft); border-radius:999px; padding:4px 11px;
}
.pipeline-note{
  padding:16px 20px; display:flex; align-items:center; gap:10px;
  font-size:13.5px; color:var(--muted);
}
.note-dot{ width:8px; height:8px; border-radius:50%; background:var(--accent); flex:none; }

/* ---------- Capabilities ---------- */
.cap-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.cap-card{ border:1px solid var(--edge); border-radius:14px; background:var(--panel); padding:26px; }
.cap-index{
  font-family:'JetBrains Mono', monospace; font-size:11px; letter-spacing:0.1em;
  text-transform:uppercase; color:var(--accent); margin-bottom:14px;
}
.cap-title{ font-size:18px; font-weight:600; letter-spacing:-0.01em; margin:0 0 9px; }
.cap-text{ font-size:14px; line-height:1.6; color:var(--muted); margin:0; }

/* ---------- Get started / CTA ---------- */
.cta-section{ border-top:1px solid var(--edge); position:relative; overflow:hidden; }
.cta-grid{
  position:absolute; inset:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:radial-gradient(110% 120% at 50% 100%,#000 25%,transparent 75%);
  mask-image:radial-gradient(110% 120% at 50% 100%,#000 25%,transparent 75%);
}
.cta-inner{ position:relative; max-width:720px; margin:0 auto; padding:110px 32px; text-align:center; }
.cta-title{
  font-size:clamp(32px,4vw,52px); line-height:1.04; letter-spacing:-0.03em;
  font-weight:700; margin:0 0 18px;
}
.cta-lede{ font-size:17px; line-height:1.6; color:var(--muted); margin:0 0 34px; }
.signup-form{ display:flex; gap:10px; justify-content:center; flex-wrap:wrap; max-width:480px; margin:0 auto; }
.signup-input{
  flex:1; min-width:240px; background:var(--panel); border:1px solid var(--edge); border-radius:10px;
  padding:13px 16px; font-size:15px; color:var(--ink); font-family:'Inter', sans-serif; outline:none;
  transition:border-color .15s ease, box-shadow .15s ease;
}
.signup-input:focus{ border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft); }
.signup-btn{ white-space:nowrap; }
.signup-btn:disabled{ opacity:.6; cursor:progress; }
.signup-success{
  display:inline-flex; align-items:center; gap:11px;
  background:var(--panel); border:1px solid var(--accent); border-radius:12px; padding:16px 22px;
  font-size:15px; color:var(--ink); text-align:left;
}
.check{
  display:inline-flex; align-items:center; justify-content:center; flex:none;
  width:26px; height:26px; border-radius:50%; background:var(--accent); color:var(--on-accent);
  font-weight:700; font-size:15px;
}
.signup-error{ margin-top:14px; font-size:13.5px; color:var(--error); font-family:'JetBrains Mono', monospace; min-height:1em; }
.signup-error:empty{ margin-top:0; }
.cta-fineprint{
  margin-top:22px; font-family:'JetBrains Mono', monospace; font-size:11px; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--muted);
}

/* ---------- Footer ---------- */
.site-footer{ border-top:1px solid var(--edge); background:var(--panel); }
.footer-inner{
  max-width:1200px; margin:0 auto; padding:54px 32px 40px;
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px;
}
.footer-brand-row{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.footer-brand .wordmark{ font-size:18px; }
.footer-blurb{ font-size:13.5px; line-height:1.6; color:var(--muted); margin:0; max-width:240px; }
.footer-col-head{
  font-family:'JetBrains Mono', monospace; font-size:10.5px; letter-spacing:0.12em;
  text-transform:uppercase; color:var(--muted); margin-bottom:14px;
}
.footer-col a{
  display:block; text-decoration:none; color:var(--ink); font-size:14px; margin-bottom:9px;
  transition:color .15s ease;
}
.footer-col a:last-child{ margin-bottom:0; }
.footer-col a:hover{ color:var(--accent); }
.footer-bar{ border-top:1px solid var(--edge); }
.footer-bar-inner{
  max-width:1200px; margin:0 auto; padding:18px 32px;
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-family:'JetBrains Mono', monospace; font-size:11px; color:var(--muted);
}

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width:980px){
  .hero-inner{ grid-template-columns:1fr; gap:48px; padding:72px 28px 84px; }
  .hero-visual{ min-height:340px; }
  .section, .pipeline-inner, .cta-inner{ padding-left:28px; padding-right:28px; }
}

@media (max-width:760px){
  .main-nav{ display:none; }
  .header-inner{ padding:12px 20px; }
  .section{ padding:72px 20px; }
  .pipeline-inner{ padding:72px 20px; }
  .cta-inner{ padding:80px 20px; }
  .product-grid{ grid-template-columns:1fr; }
  .cap-grid{ grid-template-columns:1fr; }
  .footer-inner{ grid-template-columns:1fr 1fr; gap:28px; padding:44px 20px 32px; }
  .footer-brand{ grid-column:1 / -1; }
  .hero-inner{ padding:60px 20px 72px; }
  .hero-lede{ font-size:17px; }
  .stat-num{ font-size:23px; }

  /* Pipeline: tighten the grid so it never overflows on phones */
  .pipeline-row{ grid-template-columns:40px 1fr 1fr 76px; padding:12px 14px; gap:8px; }
  .pipeline-row-head{ padding:10px 14px; font-size:9.5px; }
  .cell{ font-size:13px; }
  .stage-num{ width:26px; height:26px; font-size:11px; }
  .gate-pill{ font-size:9px; padding:3px 7px; letter-spacing:0.02em; }
  .pipeline-note{ padding:14px; font-size:12.5px; }
}

@media (max-width:460px){
  .stat-grid{ grid-template-columns:1fr 1fr; }
  .stat{ border-bottom:1px solid var(--edge); }
  .stat:nth-child(odd){ border-right:1px solid var(--edge); }
  .stat:nth-child(even){ border-right:none; }
  .stat:nth-child(3), .stat:nth-child(4){ border-bottom:none; }
  .footer-inner{ grid-template-columns:1fr; }
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; scroll-behavior:auto !important; }
}