/* =========================================================
   Primeline ADAS and Glass — design system
   Theme: near-black with electric-blue accents.
   Signature motif: calibration "target lock" reticle.
   ========================================================= */

:root{
  --ink:        #090B10;
  --ink-2:      #0C0F16;
  --panel:      #12172040;
  --panel-solid:#12172200;
  --card:       #121722;
  --card-2:     #161D2A;
  --line:       rgba(120,150,205,.14);
  --line-2:     rgba(120,160,220,.30);

  --text:       #EAEEF6;
  --muted:      #9BA7BA;
  --muted-2:    #6C7788;

  --blue:       #2E7BFF;
  --blue-2:     #57A6FF;
  --cyan:       #24D3EE;
  --glow:       rgba(46,123,255,.35);
  --glow-soft:  rgba(46,123,255,.12);

  --danger:     #FF6B57;
  --warn:       #FFB020;
  --ok:         #34D399;

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

  --wrap: 1200px;
  --r:    14px;
  --r-sm: 10px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--body);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }

/* atmospheric background: faint calibration grid + blue bloom */
body::before{
  content:"";
  position:fixed; inset:0; z-index:-2;
  background:
    radial-gradient(1100px 600px at 78% -8%, var(--glow-soft), transparent 60%),
    radial-gradient(900px 500px at 8% 4%, rgba(36,211,238,.06), transparent 60%);
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed; inset:0; z-index:-2; opacity:.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 60% 0, #000 0, transparent 72%);
  pointer-events:none;
}

.wrap{ width:100%; max-width:var(--wrap); margin:0 auto; padding:0 24px; }

/* ---------- type ---------- */
h1,h2,h3,h4{ font-family:var(--display); font-weight:600; line-height:1.08; margin:0; letter-spacing:-.02em; }
h1{ font-size:clamp(2.4rem, 5.4vw, 4.3rem); }
h2{ font-size:clamp(1.8rem, 3.6vw, 2.9rem); }
h3{ font-size:1.28rem; letter-spacing:-.01em; }
p{ margin:0 0 1rem; color:var(--muted); }
strong{ color:var(--text); font-weight:600; }

.eyebrow{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.24em;
  text-transform:uppercase; color:var(--blue-2);
  display:inline-flex; align-items:center; gap:.6em; margin-bottom:1rem;
}
.eyebrow::before{
  content:""; width:26px; height:1px;
  background:linear-gradient(90deg, var(--blue), transparent);
}
.lead{ font-size:1.15rem; color:var(--muted); max-width:60ch; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.55em;
  font-family:var(--display); font-weight:600; font-size:.98rem;
  padding:.85em 1.5em; border-radius:var(--r-sm);
  border:1px solid transparent; cursor:pointer; transition:.22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg, var(--blue-2), var(--blue));
  color:#04122e; box-shadow:0 8px 30px -8px var(--glow), inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 14px 40px -8px var(--glow); }
.btn-ghost{
  background:rgba(255,255,255,.02); color:var(--text);
  border-color:var(--line-2);
}
.btn-ghost:hover{ border-color:var(--blue); color:var(--blue-2); background:rgba(46,123,255,.06); }
.btn svg{ width:16px; height:16px; }

/* ---------- nav ---------- */
.nav{
  position:sticky; top:0; z-index:60;
  background:rgba(9,11,16,.72); backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-in{ display:flex; align-items:center; gap:2rem; height:70px; }
.brand{ display:flex; align-items:center; gap:.7rem; font-family:var(--display); font-weight:600; font-size:1.06rem; letter-spacing:-.01em; }
.brand .mark{ width:34px; height:34px; flex:none; }
.brand b{ color:var(--blue-2); font-weight:600; }
.nav-links{ display:flex; align-items:center; gap:1.6rem; margin-left:auto; }
.nav-links a{ font-size:.95rem; color:var(--muted); transition:.2s; position:relative; }
.nav-links a:hover, .nav-links a.active{ color:var(--text); }
.nav-links a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-24px; height:2px;
  background:var(--blue); border-radius:2px;
}
.nav-cta{ display:flex; align-items:center; gap:.9rem; }
.nav-phone{ font-family:var(--mono); font-size:.9rem; color:var(--text); display:flex; align-items:center; gap:.5em; }
.nav-phone svg{ width:15px; height:15px; color:var(--blue-2); }
.nav-toggle{ display:none; background:none; border:1px solid var(--line-2); border-radius:8px; width:42px; height:38px; color:var(--text); cursor:pointer; }

/* ---------- sections ---------- */
section{ padding:96px 0; position:relative; }
.section-head{ max-width:64ch; margin-bottom:52px; }
.section-head.center{ margin-inline:auto; text-align:center; }
.section-head.center .eyebrow::before{ display:none; }
.section-head.center .eyebrow{ justify-content:center; }

/* ---------- hero ---------- */
.hero{ padding:64px 0 84px; overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center; }
.hero h1 span{ color:var(--blue-2); }
.hero .lead{ margin:1.4rem 0 2rem; font-size:1.2rem; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:.9rem; align-items:center; }
.hero-note{ font-family:var(--mono); font-size:.78rem; color:var(--muted-2); margin-top:1.6rem; display:flex; gap:1.4rem; flex-wrap:wrap; }
.hero-note span{ display:flex; align-items:center; gap:.5em; }
.hero-note b{ color:var(--blue-2); }

/* target-lock signature graphic */
.reticle{ width:100%; max-width:420px; margin-inline:auto; aspect-ratio:1; position:relative; }
.reticle svg{ width:100%; height:100%; overflow:visible; }
@keyframes sweep{ 0%{ transform:rotate(0deg);} 100%{ transform:rotate(360deg);} }
@keyframes pulse{ 0%,100%{ opacity:.25;} 50%{ opacity:.9;} }
.reticle .sweep{ transform-origin:center; animation:sweep 8s linear infinite; }
.reticle .ping{ animation:pulse 2.6s ease-in-out infinite; }

/* ---------- trust bar ---------- */
.trust{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--ink-2); padding:26px 0; }
.trust-in{ display:flex; flex-wrap:wrap; gap:14px 34px; align-items:center; justify-content:center; }
.trust-item{ display:flex; align-items:center; gap:.6em; font-size:.9rem; color:var(--muted); }
.trust-item svg{ width:18px; height:18px; color:var(--blue-2); flex:none; }

/* ---------- stat row ---------- */
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.stat{ border:1px solid var(--line); border-radius:var(--r); padding:24px; background:var(--card); }
.stat .n{ font-family:var(--display); font-size:2.5rem; font-weight:600; color:var(--text); letter-spacing:-.03em; }
.stat .n b{ color:var(--blue-2); font-weight:600; }
.stat .l{ font-size:.88rem; color:var(--muted); margin-top:.2rem; }

/* ---------- cards / services ---------- */
.grid{ display:grid; gap:20px; }
.grid.c3{ grid-template-columns:repeat(3,1fr); }
.grid.c2{ grid-template-columns:repeat(2,1fr); }
.card{
  border:1px solid var(--line); border-radius:var(--r); background:var(--card);
  padding:28px; transition:.24s ease; position:relative; overflow:hidden;
}
.card:hover{ border-color:var(--line-2); transform:translateY(-4px); background:var(--card-2); }
.card::after{
  content:""; position:absolute; left:0; top:0; height:2px; width:0;
  background:linear-gradient(90deg,var(--blue),var(--cyan)); transition:width .3s ease;
}
.card:hover::after{ width:100%; }
.card .ic{
  width:46px; height:46px; border-radius:11px; display:grid; place-items:center;
  background:radial-gradient(circle at 30% 30%, rgba(46,123,255,.28), rgba(46,123,255,.05));
  border:1px solid var(--line-2); margin-bottom:18px;
}
.card .ic svg{ width:22px; height:22px; color:var(--blue-2); }
.card h3{ margin-bottom:.5rem; }
.card p{ font-size:.96rem; margin-bottom:.9rem; }
.card .more{ font-family:var(--mono); font-size:.78rem; letter-spacing:.06em; color:var(--blue-2); display:inline-flex; align-items:center; gap:.5em; }
.card .more svg{ width:14px; height:14px; transition:transform .2s; }
.card:hover .more svg{ transform:translateX(4px); }

/* feature split */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.split.rev .split-media{ order:-1; }

/* spectrum (why calibration: tire -> crash) */
.spectrum{ display:grid; gap:0; border:1px solid var(--line); border-radius:var(--r); overflow:hidden; }
.spec-row{ display:grid; grid-template-columns:120px 1fr; gap:0; border-bottom:1px solid var(--line); }
.spec-row:last-child{ border-bottom:none; }
.spec-sev{ padding:22px 20px; display:flex; flex-direction:column; gap:8px; justify-content:center; background:var(--ink-2); border-right:1px solid var(--line); }
.spec-sev .dot{ width:11px; height:11px; border-radius:50%; }
.spec-sev .tag{ font-family:var(--mono); font-size:.68rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }
.spec-body{ padding:22px 24px; }
.spec-body h3{ font-size:1.12rem; margin-bottom:.3rem; }
.spec-body p{ font-size:.95rem; margin:0; }
.sev-low  .dot{ background:var(--ok);     box-shadow:0 0 12px var(--ok); }
.sev-med  .dot{ background:var(--blue-2); box-shadow:0 0 12px var(--blue); }
.sev-high .dot{ background:var(--warn);   box-shadow:0 0 12px var(--warn); }
.sev-crit .dot{ background:var(--danger); box-shadow:0 0 12px var(--danger); }

/* process steps */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; counter-reset:step; }
.step{ border:1px solid var(--line); border-radius:var(--r); padding:26px 22px; background:var(--card); position:relative; }
.step .num{ font-family:var(--mono); font-size:.8rem; color:var(--blue-2); letter-spacing:.1em; margin-bottom:14px; }
.step h3{ font-size:1.08rem; margin-bottom:.4rem; }
.step p{ font-size:.92rem; margin:0; }

/* makes grid */
.makes{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.make{ border:1px solid var(--line); border-radius:var(--r); padding:22px 24px; background:var(--card); transition:.22s; }
.make:hover{ border-color:var(--line-2); background:var(--card-2); transform:translateY(-3px); }
.make .name{ font-family:var(--display); font-weight:600; font-size:1.15rem; display:flex; align-items:center; justify-content:space-between; }
.make .name span{ font-family:var(--mono); font-size:.64rem; color:var(--muted-2); letter-spacing:.1em; }
.make .sys{ font-size:.9rem; color:var(--blue-2); margin-top:.35rem; font-family:var(--mono); }
.make p{ font-size:.9rem; margin:.6rem 0 0; }

/* detail article pages */
.article{ max-width:820px; margin:0 auto; }
.article h2{ margin:44px 0 14px; }
.article h3{ margin:30px 0 8px; color:var(--text); }
.article p{ font-size:1.04rem; color:var(--muted); }
.article ul{ color:var(--muted); padding-left:1.1rem; margin:0 0 1.2rem; }
.article li{ margin-bottom:.5rem; }
.article li::marker{ color:var(--blue); }
.callout{
  border:1px solid var(--line-2); border-left:3px solid var(--blue);
  background:linear-gradient(90deg, var(--glow-soft), transparent);
  border-radius:var(--r-sm); padding:20px 22px; margin:26px 0;
}
.callout p{ margin:0; color:var(--text); }
.callout .k{ font-family:var(--mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--blue-2); display:block; margin-bottom:.4rem; }

/* FAQ */
.faq{ max-width:840px; margin:0 auto; display:grid; gap:14px; }
.qa{ border:1px solid var(--line); border-radius:var(--r-sm); background:var(--card); overflow:hidden; }
.qa summary{ list-style:none; cursor:pointer; padding:20px 24px; font-family:var(--display); font-weight:600; font-size:1.05rem; display:flex; justify-content:space-between; gap:1rem; align-items:center; }
.qa summary::-webkit-details-marker{ display:none; }
.qa summary .pl{ color:var(--blue-2); font-size:1.4rem; line-height:1; transition:.2s; flex:none; }
.qa[open] summary .pl{ transform:rotate(45deg); }
.qa .a{ padding:0 24px 22px; }
.qa .a p{ margin:0; font-size:.98rem; }

/* CTA band */
.cta-band{ border:1px solid var(--line-2); border-radius:20px; background:
   radial-gradient(700px 300px at 80% 0, var(--glow-soft), transparent 65%), var(--ink-2);
   padding:56px; text-align:center; position:relative; overflow:hidden; }
.cta-band h2{ margin-bottom:.7rem; }
.cta-band .lead{ margin:0 auto 1.8rem; }
.cta-band .hero-cta{ justify-content:center; }

/* contact */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:40px; }
.info-row{ display:flex; gap:16px; padding:20px 0; border-bottom:1px solid var(--line); }
.info-row:last-child{ border-bottom:none; }
.info-row .ic{ width:42px; height:42px; border-radius:10px; display:grid; place-items:center; background:rgba(46,123,255,.08); border:1px solid var(--line-2); flex:none; }
.info-row .ic svg{ width:19px; height:19px; color:var(--blue-2); }
.info-row .l{ font-family:var(--mono); font-size:.7rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted-2); }
.info-row .v{ font-size:1.05rem; color:var(--text); }
.form{ border:1px solid var(--line); border-radius:var(--r); background:var(--card); padding:30px; }
.field{ margin-bottom:16px; }
.field label{ font-family:var(--mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); display:block; margin-bottom:7px; }
.field input, .field select, .field textarea{
  width:100%; background:var(--ink); border:1px solid var(--line-2); border-radius:var(--r-sm);
  padding:12px 14px; color:var(--text); font-family:var(--body); font-size:1rem; transition:.2s;
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-color:var(--blue); box-shadow:0 0 0 3px var(--glow-soft); }
.field textarea{ resize:vertical; min-height:120px; }

/* footer */
.footer{ border-top:1px solid var(--line); background:var(--ink-2); padding:64px 0 34px; }
.footer-grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:40px; margin-bottom:44px; }
.footer p{ font-size:.94rem; }
.footer h4{ font-family:var(--mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--muted-2); margin-bottom:16px; font-weight:500; }
.footer-links{ display:grid; gap:10px; }
.footer-links a{ font-size:.94rem; color:var(--muted); transition:.2s; }
.footer-links a:hover{ color:var(--blue-2); }
.footer-bottom{ border-top:1px solid var(--line); padding-top:24px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:.84rem; color:var(--muted-2); font-family:var(--mono); }

/* breadcrumb / page header */
.page-head{ padding:64px 0 20px; border-bottom:1px solid var(--line); }
.crumb{ font-family:var(--mono); font-size:.74rem; letter-spacing:.1em; color:var(--muted-2); margin-bottom:1.1rem; display:flex; gap:.6em; }
.crumb a:hover{ color:var(--blue-2); }
.page-head h1{ font-size:clamp(2rem,4.4vw,3.2rem); }
.page-head p{ margin-top:1rem; max-width:66ch; }

/* utility */
.reveal{ opacity:0; transform:translateY(18px); transition:.7s cubic-bezier(.2,.7,.2,1); }
.reveal.in{ opacity:1; transform:none; }
.center{ text-align:center; }
.mt-s{ margin-top:2rem; } .mt-m{ margin-top:3rem; }

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-grid{ grid-template-columns:1fr; gap:32px; }
  .reticle{ max-width:320px; order:-1; }
  .split{ grid-template-columns:1fr; gap:32px; }
  .split.rev .split-media{ order:0; }
  .stats{ grid-template-columns:repeat(2,1fr); }
  .grid.c3, .makes{ grid-template-columns:repeat(2,1fr); }
  .steps{ grid-template-columns:repeat(2,1fr); }
  .contact-grid, .footer-grid{ grid-template-columns:1fr; }
  .footer-grid{ gap:32px; }
  .nav-links, .nav-phone{ display:none; }
  .nav-toggle{ display:grid; place-items:center; }
  .nav.open .nav-links{
    display:flex; position:absolute; top:70px; left:0; right:0; flex-direction:column;
    align-items:flex-start; gap:0; background:var(--ink); border-bottom:1px solid var(--line); padding:8px 24px 18px;
  }
  .nav.open .nav-links a{ padding:12px 0; width:100%; border-bottom:1px solid var(--line); }
  .nav.open .nav-links a.active::after{ display:none; }
  section{ padding:72px 0; }
  .cta-band{ padding:38px 24px; }
}
@media (max-width:560px){
  .stats, .grid.c3, .grid.c2, .makes, .steps{ grid-template-columns:1fr; }
  .spec-row{ grid-template-columns:96px 1fr; }
  body{ font-size:16px; }
}
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; }
}


/* ---- logo image ---- */
.brand-logo{ height:40px; width:auto; display:block; }
.footer .brand-logo{ height:54px; margin-bottom:2px; }
@media (max-width:560px){ .brand-logo{ height:34px; } }


/* ---- service area chips ---- */
.area-chips{ display:flex; flex-wrap:wrap; gap:10px; justify-content:center; }
.area-chips span{
  font-family:var(--mono); font-size:.8rem; letter-spacing:.06em; color:var(--muted);
  border:1px solid var(--line-2); border-radius:999px; padding:.5em 1.1em;
  background:rgba(46,123,255,.05); transition:.2s;
}
.area-chips span:hover{ color:var(--blue-2); border-color:var(--blue); background:rgba(46,123,255,.1); }

/* ---- sticky mobile call bar ---- */
.callbar{
  position:fixed; left:0; right:0; bottom:0; z-index:70;
  display:none; gap:10px; padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(9,11,16,.92); backdrop-filter:blur(14px);
  border-top:1px solid var(--line-2);
}
.callbar a{ flex:1; justify-content:center; }
@media (max-width:960px){
  .callbar{ display:flex; }
  body{ padding-bottom:76px; }
}

/* ---- polish ---- */
::selection{ background:rgba(46,123,255,.35); color:#fff; }
:focus-visible{ outline:2px solid var(--blue-2); outline-offset:3px; border-radius:4px; }
@media (min-width:961px){
  ::-webkit-scrollbar{ width:12px; }
  ::-webkit-scrollbar-track{ background:var(--ink); }
  ::-webkit-scrollbar-thumb{ background:#1C2536; border-radius:6px; border:3px solid var(--ink); }
  ::-webkit-scrollbar-thumb:hover{ background:#28344D; }
}
.nav-links{ gap:1.35rem; }
.nav-links a{ font-size:.92rem; }