/* ============================================================
   3DEO Lidar — Design System
   Precision-technical / engineering-authoritative
   Brand navy sampled from logo: #1f4780
   ============================================================ */

/* ---------- Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800;900&family=Hanken+Grotesk:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ---------- Tokens ---------- */
:root{
  --font-display:'Archivo', system-ui, sans-serif;
  --font-body:'Hanken Grotesk', system-ui, sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, monospace;

  /* brand */
  --navy:#1f4780;
  --navy-deep:#163764;
  --navy-dark:#0e2547;

  /* point-cloud elevation spectrum (data accents) */
  --s1:#27409c; --s2:#1f97d4; --s3:#22c39a; --s4:#e0c63f; --s5:#e8643f;

  /* default theme = ELECTRIC (light base, cyan accent) */
  --bg:#ffffff;
  --bg-alt:#f2f5f9;
  --bg-panel:#fafbfd;
  --ink:#0d1b30;
  --ink-2:#2c3b51;
  --muted:#5f6f88;
  --line:#e4eaf1;
  --line-strong:#cdd6e2;
  --accent:#0091c7;
  --accent-hover:#0079a6;
  --accent-ink:#ffffff;
  --on-dark:#eaf1fa;

  --radius:4px;
  --radius-lg:8px;
  --maxw:1240px;
  --gutter:clamp(20px,5vw,64px);
  --shadow:0 1px 2px rgba(13,27,48,.05), 0 8px 30px -18px rgba(13,27,48,.25);
  --shadow-lg:0 30px 70px -40px rgba(13,27,48,.55);
}

/* THEME: HERITAGE — light base, navy accent */
[data-theme="heritage"]{
  --accent:#1f4780;
  --accent-hover:#163764;
  --accent-ink:#ffffff;
}
/* THEME: ELECTRIC — light base, cyan accent (default) */
[data-theme="electric"]{
  --accent:#0091c7;
  --accent-hover:#0079a6;
  --accent-ink:#ffffff;
}

/* THEME: FIELD — dark aerospace base, spectrum accents */
[data-theme="field"]{
  --bg:#0a1525;
  --bg-alt:#0e1d33;
  --bg-panel:#112340;
  --ink:#eaf1fa;
  --ink-2:#c4d2e4;
  --muted:#8699b6;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --accent:#3fb5e6;
  --accent-hover:#62c4ee;
  --accent-ink:#06121f;
  --on-dark:#eaf1fa;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 14px 40px -22px rgba(0,0,0,.8);
  --shadow-lg:0 40px 90px -45px rgba(0,0,0,.9);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--ink);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);margin:0;line-height:1.04;letter-spacing:-.018em;font-weight:800;}
h1{font-size:clamp(2.6rem,6vw,5rem);}
h2{font-size:clamp(2rem,3.8vw,3.2rem);}
h3{font-size:clamp(1.3rem,2vw,1.7rem);letter-spacing:-.01em;font-weight:700;}
h4{font-size:1.05rem;font-weight:700;letter-spacing:-.005em;}
p{margin:0 0 1.1em;color:var(--ink-2);text-wrap:pretty;}
strong{color:var(--ink);font-weight:700;}

.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;align-items:center;gap:.6em;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;}
.eyebrow.no-tick::before{display:none;}

.lead{font-size:clamp(1.1rem,1.5vw,1.35rem);color:var(--ink-2);line-height:1.55;}
.mono{font-family:var(--font-mono);}
.measure{max-width:62ch;}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter);}
.wrap-wide{max-width:1440px;margin:0 auto;padding-inline:var(--gutter);}
section{position:relative;}
.section{padding-block:clamp(64px,9vw,128px);}
.section-sm{padding-block:clamp(48px,6vw,84px);}
.bg-alt{background:var(--bg-alt);}
.bg-panel{background:var(--bg-panel);}
.bg-dark{background:var(--navy-dark);color:var(--on-dark);}
.bg-dark h1,.bg-dark h2,.bg-dark h3,.bg-dark h4{color:#fff;}
.bg-dark p{color:rgba(234,241,250,.78);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

.grid{display:grid;gap:clamp(20px,2.5vw,36px);}
.cols-2{grid-template-columns:repeat(2,1fr);}
.cols-3{grid-template-columns:repeat(3,1fr);}
.cols-4{grid-template-columns:repeat(4,1fr);}
@media(max-width:980px){.cols-3,.cols-4{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.cols-2,.cols-3,.cols-4{grid-template-columns:1fr;}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--font-body);font-weight:600;font-size:.95rem;
  padding:.85em 1.4em;border-radius:var(--radius);
  border:1px solid transparent;cursor:pointer;
  transition:background .18s,color .18s,border-color .18s,transform .18s;
  letter-spacing:.005em;white-space:nowrap;
}
.btn .arrow{transition:transform .2s;}
.btn:hover .arrow{transform:translateX(3px);}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);}
.btn-ghost{background:transparent;color:var(--accent);padding-inline:0;}
.btn-light{background:#fff;color:var(--navy-dark);border-color:#fff;}
.btn-light:hover{background:rgba(255,255,255,.88);}
.bg-dark .btn-outline{color:#fff;border-color:rgba(255,255,255,.32);}
.bg-dark .btn-outline:hover{border-color:#fff;}
.btn-lg{padding:1.05em 1.7em;font-size:1.02rem;}

/* link with arrow */
.link-arrow{display:inline-flex;align-items:center;gap:.5em;color:var(--accent);font-weight:600;font-size:.95rem;}
.link-arrow .arrow{transition:transform .2s;}
.link-arrow:hover .arrow{transform:translateX(4px);}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:color-mix(in srgb,var(--bg) 86%,transparent);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:2.2rem;height:74px;}
.brand{display:flex;align-items:center;gap:.7rem;flex-shrink:0;}
.brand img{height:38px;width:auto;}
.brand .brand-txt{display:flex;flex-direction:column;line-height:1;}
.brand .brand-name{font-family:var(--font-display);font-weight:900;font-size:1.15rem;letter-spacing:.02em;color:var(--ink);}
.brand .brand-sub{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.34em;color:var(--muted);text-transform:uppercase;margin-top:3px;}

.nav-links{display:flex;align-items:center;gap:.2rem;margin-left:auto;}
.nav-item{position:relative;}
.nav-link{
  display:flex;align-items:center;gap:.35em;
  padding:.6rem .8rem;font-size:.92rem;font-weight:600;color:var(--ink-2);
  border-radius:var(--radius);transition:color .15s,background .15s;cursor:pointer;
}
.nav-link:hover,.nav-item:hover .nav-link{color:var(--accent);}
.nav-link .caret{width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.6;transition:transform .2s;}
.nav-item:hover .nav-link .caret{transform:rotate(225deg) translateY(-1px);}

.dropdown{
  position:absolute;top:calc(100% + 10px);left:0;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);padding:.5rem;min-width:248px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s,transform .18s,visibility .18s;
}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.dropdown::before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px;}
.dd-link{display:block;padding:.62rem .85rem;border-radius:var(--radius);font-size:.9rem;font-weight:600;color:var(--ink-2);transition:background .14s,color .14s;}
.dd-link:hover{background:var(--bg-alt);color:var(--accent);}
.dd-link .dd-sub{display:block;font-weight:400;font-size:.76rem;color:var(--muted);margin-top:2px;}
.dd-wide{min-width:540px;display:grid;grid-template-columns:1fr 1fr;gap:.1rem;}
.dd-head{grid-column:1/-1;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);padding:.6rem .85rem .3rem;}

.nav-cta{display:flex;align-items:center;gap:.6rem;flex-shrink:0;}
.nav-toggle{display:none;background:none;border:1px solid var(--line-strong);border-radius:var(--radius);width:42px;height:42px;cursor:pointer;align-items:center;justify-content:center;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{content:"";display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:.2s;}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}

@media(max-width:1080px){
  .nav-links,.nav-cta .btn{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta{margin-left:auto;}
}

/* Mobile menu overlay */
.mobile-menu{
  position:fixed;inset:0;z-index:80;background:var(--bg);
  transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:1.2rem var(--gutter) 2rem;overflow-y:auto;
}
.mobile-menu.open{transform:translateX(0);}
.mm-top{display:flex;align-items:center;justify-content:space-between;height:74px;margin-bottom:1rem;}
.mm-close{background:none;border:1px solid var(--line-strong);border-radius:var(--radius);width:42px;height:42px;font-size:1.4rem;cursor:pointer;color:var(--ink);}
.mm-group{border-top:1px solid var(--line);padding:1rem 0;}
.mm-group>a,.mm-group>.mm-label{font-family:var(--font-display);font-weight:700;font-size:1.3rem;color:var(--ink);display:block;margin-bottom:.6rem;}
.mm-sub{display:flex;flex-direction:column;gap:.1rem;padding-left:.2rem;}
.mm-sub a{color:var(--muted);font-weight:600;padding:.35rem 0;font-size:.98rem;}
.mm-sub a:hover{color:var(--accent);}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-dark);color:rgba(234,241,250,.72);padding-block:clamp(48px,6vw,80px) 36px;}
.site-footer h4{color:#fff;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;font-weight:500;margin-bottom:1.1rem;color:rgba(234,241,250,.55);}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:2rem;}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:2rem 1.4rem;}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr;}}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(234,241,250,.5);}
.footer-col a{display:block;color:rgba(234,241,250,.72);padding:.28rem 0;font-size:.92rem;font-weight:500;transition:color .15s;}
.footer-col a:hover{color:var(--accent);}
.footer-contact{font-size:.92rem;line-height:1.7;margin-top:1rem;}
.footer-contact a{color:var(--accent);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.1);margin-top:3rem;padding-top:1.6rem;font-size:.82rem;font-family:var(--font-mono);color:rgba(234,241,250,.45);letter-spacing:.02em;}

/* ---------- Cards ---------- */
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:border-color .2s,transform .2s,box-shadow .2s;}
.card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow);}
.card-pad{padding:clamp(1.4rem,2.4vw,2rem);}
.card-media{aspect-ratio:16/10;background:var(--bg-alt);position:relative;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .card-media img{transform:scale(1.04);}

/* spec rows */
.spec-list{display:grid;gap:0;border-top:1px solid var(--line);}
.spec-row{display:flex;justify-content:space-between;gap:1rem;padding:.85rem 0;border-bottom:1px solid var(--line);}
.spec-row .k{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);}
.spec-row .v{font-weight:700;color:var(--ink);text-align:right;}

/* stat */
.stat{display:flex;flex-direction:column;gap:.15rem;}
.stat .num{font-family:var(--font-display);font-weight:800;font-size:clamp(2rem,3.4vw,2.9rem);color:var(--accent);line-height:1;letter-spacing:-.02em;}
.stat .lab{font-size:.86rem;color:var(--muted);font-weight:600;}

/* eyebrow chip / tag */
.tag{display:inline-flex;align-items:center;gap:.4em;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);border:1px solid var(--line-strong);border-radius:100px;padding:.3em .8em;}

/* image placeholder (striped) */
.ph{
  position:relative;background:
    repeating-linear-gradient(135deg,var(--bg-alt),var(--bg-alt) 11px,color-mix(in srgb,var(--bg-alt) 60%, var(--line)) 11px,color-mix(in srgb,var(--bg-alt) 60%, var(--line)) 22px);
  display:flex;align-items:center;justify-content:center;color:var(--muted);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;text-align:center;padding:1rem;
}

/* ---------- Point-cloud thumbnail / NDA ---------- */
.pc-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);background:var(--navy-dark);cursor:pointer;}
.pc-card .card-media{aspect-ratio:4/3;}
.pc-lock{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.6rem;background:linear-gradient(180deg,rgba(10,21,37,.2),rgba(10,21,37,.82));color:#fff;opacity:0;transition:opacity .25s;}
.pc-card:hover .pc-lock{opacity:1;}
.pc-lock .lk{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;}
.pc-meta{padding:1rem 1.1rem;background:var(--bg);border-top:1px solid var(--line);}

/* modal */
.modal-scrim{position:fixed;inset:0;z-index:120;background:rgba(8,16,30,.62);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;padding:1.2rem;}
.modal-scrim.open{display:flex;}
.modal{background:var(--bg);border-radius:var(--radius-lg);max-width:560px;width:100%;box-shadow:var(--shadow-lg);max-height:90vh;overflow:auto;}
.modal-head{padding:1.6rem 1.8rem 1.1rem;border-bottom:1px solid var(--line);}
.modal-body{padding:1.6rem 1.8rem;}
.field{margin-bottom:1rem;}
.field label{display:block;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:.4rem;}
.field input[type=text],.field input[type=email]{width:100%;padding:.8rem .9rem;border:1px solid var(--line-strong);border-radius:var(--radius);font-family:var(--font-body);font-size:1rem;color:var(--ink);background:var(--bg);}
.field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent);}
.check{display:flex;gap:.7rem;align-items:flex-start;font-size:.9rem;color:var(--ink-2);}
.check input{margin-top:.25rem;width:18px;height:18px;accent-color:var(--accent);flex-shrink:0;}
.nda-text{font-size:.82rem;line-height:1.6;color:var(--muted);max-height:160px;overflow:auto;border:1px solid var(--line);border-radius:var(--radius);padding:1rem;background:var(--bg-alt);margin-bottom:1.1rem;}

/* ---------- Hero point-cloud texture ---------- */
.dotfield{position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(circle at center, color-mix(in srgb,var(--accent) 55%,transparent) 1px, transparent 1.4px);
  background-size:26px 26px;
  -webkit-mask-image:radial-gradient(ellipse 70% 80% at 80% 30%, #000, transparent 75%);
  mask-image:radial-gradient(ellipse 70% 80% at 80% 30%, #000, transparent 75%);
}

/* utilities */
.center{text-align:center;}
.mx-auto{margin-inline:auto;}
.stack-sm>*+*{margin-top:.6rem;}
.flex{display:flex;}
.items-center{align-items:center;}
.gap-1{gap:1rem;}.gap-2{gap:1.6rem;}
.wrap-btns{display:flex;flex-wrap:wrap;gap:.8rem;}
.hide-mobile{}
@media(max-width:640px){.hide-mobile{display:none;}}

/* reveal on scroll — visible by default (this preview freezes time-based
   transitions, so we must never gate final visibility on one). JS may add
   .in for an instant settle; base state is fully visible regardless. */
[data-reveal]{opacity:1;transform:none;}