/* =========================================================
   BITOTS TECHNOLOGIES — Design System
   Palette: Ink Navy / Paper / Signal Cyan / Amber flag
   Type: Space Grotesk (display) · IBM Plex Sans (body) · IBM Plex Mono (data)
   ========================================================= */

:root{
  --ink:        #0B1F2A;
  --ink-soft:   #14303F;
  --ink-softer: #1C3E4D;
  --paper:      #F6F5F1;
  --paper-dim:  #EDEAE1;
  --paper-line: #DAD5C8;
  --line-dark:  rgba(246,245,241,0.14);
  --slate:      #55666D;
  --slate-soft: #7C8A8F;
  --signal:     #2FB6A8;
  --signal-deep:#1D8A80;
  --signal-glow: rgba(47,182,168,0.18);
  --amber:      #E8A33D;
  --white:      #FFFFFF;

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

  --container: 1180px;
  --radius: 4px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.12;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{ margin:0 0 1em; color:var(--slate); }
.container{ max-width:var(--container); margin:0 auto; padding:0 32px; }

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

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
}

/* Eyebrow / record-id label — domain motif: every module & section carries an ID */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--signal-deep);
}
.eyebrow::before{
  content:"";
  width:16px;
  height:1px;
  background:var(--signal);
}
.on-dark .eyebrow{ color:var(--signal); }
.on-dark .eyebrow::before{ background:var(--signal); }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-weight:600;
  font-size:14.5px;
  letter-spacing:.01em;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{ background:var(--signal); color:var(--ink); }
.btn-primary:hover{ background:#3fd0c1; }
.btn-ghost-dark{ border-color:var(--line-dark); color:var(--paper); }
.btn-ghost-dark:hover{ border-color:var(--signal); color:var(--signal); }
.btn-ghost-light{ border-color:var(--paper-line); color:var(--ink); }
.btn-ghost-light:hover{ border-color:var(--signal-deep); color:var(--signal-deep); }
.btn-sm{ padding:9px 18px; font-size:13px; }
.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(11,31,42,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-dark);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.logo{
  font-family:var(--font-display);
  font-weight:500;
  font-size:20px;
  color:var(--paper);
  letter-spacing:.01em;
  display:flex; align-items:center; gap:10px;
}
.logo-mark{
  width:10px; height:10px; border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 0 3px var(--signal-glow);
}
.logo-sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  color:var(--slate-soft);
  letter-spacing:.08em;
  margin-left:2px;
}
.logo-img{
  height:70px;
  width: 200px;
  display:block;
}
.footer-brand .logo-img{ height:30px; }
.nav-links{
  display:flex; align-items:center; gap:36px;
}
.nav-links > li{ position:relative; }
.nav-links a.top-link{
  color:var(--paper);
  font-size:14.5px;
  font-weight:500;
  padding:8px 0;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, color .2s ease;
  display:flex; align-items:center; gap:5px;
}
.nav-links a.top-link:hover{ color:var(--signal); }
.nav-links li.current > a.top-link{ border-bottom-color:var(--signal); color:var(--signal); }
.caret{ width:8px; height:8px; opacity:.7; }

.dropdown{
  position:absolute; top:100%; left:-16px; padding-top:14px;
  min-width:240px;
  opacity:0; visibility:hidden; transform:translateY(-6px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown{
  opacity:1; visibility:visible; transform:translateY(0);
}
.dropdown-inner{
  background:var(--ink-soft);
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:0 18px 40px rgba(0,0,0,.35);
}
.dropdown-inner a{
  display:block;
  padding:14px 18px;
  border-bottom:1px solid var(--line-dark);
  font-size:14px;
  color:var(--paper);
}
.dropdown-inner a:last-child{ border-bottom:none; }
.dropdown-inner a:hover{ background:var(--ink-softer); color:var(--signal); }
.dropdown-inner .d-tag{
  display:block; font-family:var(--font-mono); font-size:10.5px; color:var(--signal); margin-bottom:3px; letter-spacing:.05em;
}

.nav-cta{ display:flex; align-items:center; gap:20px; }
.nav-toggle{
  display:none;
  background:none; border:1px solid var(--line-dark); border-radius:4px;
  width:40px; height:40px; color:var(--paper); cursor:pointer;
}

/* ---------- Hero shared ---------- */
.hero{
  background:radial-gradient(1100px 520px at 78% -10%, rgba(47,182,168,0.14), transparent 60%), var(--ink);
  color:var(--paper);
  padding:96px 0 0;
  position:relative;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
  padding-bottom:64px;
}
.hero h1{
  font-size:clamp(34px, 4.6vw, 58px);
  color:var(--paper);
  margin-top:18px;
}
.hero h1 em{ color:var(--signal); font-style:normal; }
.hero p.lead{
  color:#B9C4C8;
  font-size:18px;
  max-width:520px;
  margin-bottom:32px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }

/* trace visual */
.trace-wrap{
  border:1px solid var(--line-dark);
  border-radius:6px;
  background:linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0));
  padding:22px;
}
.trace-head{
  display:flex; justify-content:space-between; align-items:center;
  font-family:var(--font-mono); font-size:11px; color:var(--slate-soft);
  letter-spacing:.06em; text-transform:uppercase;
  margin-bottom:14px;
}
.trace-head .dot{ width:6px; height:6px; border-radius:50%; background:var(--signal); display:inline-block; margin-right:6px; box-shadow:0 0 0 4px var(--signal-glow); }
.trace-svg{ width:100%; height:auto; display:block; }
.trace-line{
  fill:none; stroke:var(--signal); stroke-width:2;
  stroke-dasharray:900; stroke-dashoffset:900;
  animation:draw 2.6s ease forwards .3s;
}
@keyframes draw{ to{ stroke-dashoffset:0; } }
.trace-modules{
  display:grid; grid-template-columns:repeat(3,1fr); gap:10px; margin-top:18px;
}
.trace-mod{
  border:1px solid var(--line-dark); border-radius:4px; padding:12px 10px; text-align:center;
  font-family:var(--font-mono); font-size:12px; color:var(--paper);
  background:rgba(255,255,255,0.02);
}
.trace-mod span{ display:block; color:var(--signal); font-size:10px; letter-spacing:.06em; margin-bottom:4px; }

.hero-divider{
  height:60px;
  background-image: repeating-linear-gradient(90deg, var(--line-dark) 0 1px, transparent 1px 34px);
}

/* ---------- Stat bar ---------- */
.statbar{
  background:var(--ink-soft);
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
}
.statbar-grid{
  display:grid; grid-template-columns:repeat(4,1fr);
}
.stat{
  padding:30px 28px;
  border-right:1px solid var(--line-dark);
}
.stat:last-child{ border-right:none; }
.stat b{
  display:block; font-family:var(--font-display); font-size:30px; color:var(--paper); font-weight:700;
}
.stat span{
  font-family:var(--font-mono); font-size:11.5px; color:var(--slate-soft); letter-spacing:.04em; text-transform:uppercase;
}

/* ---------- Sections ---------- */
.section{ padding:96px 0; }
.section-tight{ padding:72px 0; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap:40px;
  margin-bottom:52px;
}
.section-head h2{ font-size:clamp(26px,3vw,38px); max-width:640px; }
.section-head p{ max-width:420px; margin:0; }
.on-dark{ background:var(--ink); color:var(--paper); }
.on-dark h2, .on-dark h3, .on-dark h4{ color:var(--paper); }
.on-dark p{ color:#AEBBC0; }
.bg-dim{ background:var(--paper-dim); }

/* module / product cards */
.card-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.mod-card{
  background:var(--white);
  border:1px solid var(--paper-line);
  border-radius:6px;
  padding:32px 28px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  display:flex; flex-direction:column; height:100%;
}
.mod-card:hover{
  transform:translateY(-4px);
  box-shadow:0 20px 40px rgba(11,31,42,0.08);
  border-color:var(--signal);
}
.mod-card .mod-index{
  font-family:var(--font-mono); font-size:11px; color:var(--signal-deep); letter-spacing:.06em; margin-bottom:18px; display:block;
}
.mod-card h3{ font-size:22px; margin-bottom:10px; }
.mod-card p{ font-size:14.5px; flex-grow:1; }
.mod-card .mod-tags{ display:flex; flex-wrap:wrap; gap:6px; margin:14px 0 20px; }
.mod-card .mod-tags span{
  font-family:var(--font-mono); font-size:10.5px; color:var(--slate);
  border:1px solid var(--paper-line); border-radius:20px; padding:4px 10px;
}
.mod-card .mod-link{
  font-size:13.5px; font-weight:600; color:var(--ink); display:inline-flex; align-items:center; gap:6px;
  border-top:1px solid var(--paper-line); padding-top:16px; margin-top:auto;
}
.mod-card .mod-link:hover{ color:var(--signal-deep); }

/* feature list */
.feat-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--paper-line);
  border:1px solid var(--paper-line);
}
.feat-item{
  background:var(--paper); padding:30px 24px;
}
.feat-item .feat-mark{
  width:34px; height:34px; border-radius:50%;
  border:1px solid var(--signal); color:var(--signal-deep);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono); font-size:13px; margin-bottom:18px;
}
.feat-item h4{ font-size:16px; margin-bottom:8px; }
.feat-item p{ font-size:13.5px; margin:0; }

/* workflow / process steps */
.flow{
  display:grid; grid-template-columns:repeat(5,1fr); gap:0; position:relative;
}
.flow::before{
  content:""; position:absolute; top:19px; left:0; right:0; height:1px;
  background:repeating-linear-gradient(90deg, var(--paper-line) 0 8px, transparent 8px 14px);
}
.flow-step{ position:relative; padding-right:18px; }
.flow-step .fs-dot{
  width:38px; height:38px; border-radius:50%; background:var(--ink); color:var(--signal);
  font-family:var(--font-mono); font-size:12px; display:flex; align-items:center; justify-content:center;
  margin-bottom:20px; position:relative; z-index:2;
}
.flow-step h4{ font-size:15px; margin-bottom:6px; }
.flow-step p{ font-size:13px; }

/* quote / testimonial */
.quote-block{
  border-left:2px solid var(--signal);
  padding-left:32px;
  max-width:760px;
}
.quote-block p{
  font-family:var(--font-display); font-size:26px; color:var(--paper); line-height:1.4; font-weight:500;
  margin-bottom:20px;
}
.quote-attr{ font-family:var(--font-mono); font-size:12.5px; color:var(--slate-soft); letter-spacing:.03em; }

/* CTA band */
.cta-band{
  background:var(--ink);
  color:var(--paper);
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:""; position:absolute; inset:0;
  background:radial-gradient(700px 300px at 15% 20%, var(--signal-glow), transparent 70%);
  pointer-events:none;
}
.cta-inner{ position:relative; display:flex; justify-content:space-between; align-items:center; gap:40px; flex-wrap:wrap; }
.cta-inner h2{ font-size:clamp(24px,3vw,36px); max-width:520px; margin-bottom:0; }

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink); color:var(--paper); border-top:1px solid var(--line-dark);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px;
  padding-bottom:48px; border-bottom:1px solid var(--line-dark);
}
.footer-brand p{ max-width:280px; font-size:14px; }
.footer-col h5{
  font-family:var(--font-mono); font-size:11.5px; letter-spacing:.06em; text-transform:uppercase;
  color:var(--slate-soft); margin-bottom:16px;
}
.footer-col a, .footer-col li{ display:block; font-size:14px; color:#C7D1D4; margin-bottom:12px; }
.footer-col a:hover{ color:var(--signal); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; padding-top:24px; flex-wrap:wrap; gap:12px;
}
.footer-bottom small{ color:var(--slate-soft); font-size:12.5px; font-family:var(--font-mono); }
.socials{ display:flex; gap:16px; }
.socials a{ font-size:12.5px; color:var(--slate-soft); }
.socials a:hover{ color:var(--signal); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero{
  background:var(--ink); color:var(--paper); padding:150px 0 70px;
  position:relative; overflow:hidden;
  background-image: radial-gradient(900px 420px at 85% -10%, rgba(47,182,168,0.14), transparent 60%);
}
.page-hero h1{ color:var(--paper); font-size:clamp(32px,4.2vw,50px); max-width:760px; margin-top:16px; }
.page-hero p.lead{ color:#B9C4C8; font-size:17px; max-width:600px; }
.breadcrumb{
  font-family:var(--font-mono); font-size:11.5px; color:var(--slate-soft); letter-spacing:.04em;
}
.breadcrumb a{ color:var(--slate-soft); }
.breadcrumb a:hover{ color:var(--signal); }
.breadcrumb .sep{ margin:0 8px; }

/* ---------- Table ---------- */
.compare-table{ width:100%; border-collapse:collapse; }
.compare-table th, .compare-table td{
  padding:16px 18px; text-align:left; border-bottom:1px solid var(--paper-line); font-size:14px;
}
.compare-table th{
  font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.05em; color:var(--slate);
  background:var(--paper-dim);
}
.compare-table td:first-child{ font-weight:600; }
.compare-table .yes{ color:var(--signal-deep); font-weight:700; }

/* ---------- Forms ---------- */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.field{ display:flex; flex-direction:column; gap:8px; margin-bottom:20px; }
.field.full{ grid-column:1 / -1; }
label{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.04em; text-transform:uppercase; color:var(--slate); }
input, textarea, select{
  font-family:var(--font-body); font-size:15px; padding:13px 14px;
  border:1px solid var(--paper-line); border-radius:4px; background:var(--white); color:var(--ink);
}
textarea{ resize:vertical; min-height:120px; }
input:focus, textarea:focus, select:focus{ border-color:var(--signal); }
.form-note{ font-size:12.5px; color:var(--slate-soft); margin-top:8px; }
.form-status{ font-size:14px; margin-top:14px; font-weight:600; display:none; }
.form-status.show{ display:block; }

.contact-info-list{ display:flex; flex-direction:column; gap:28px; }
.contact-info-item .ci-label{ font-family:var(--font-mono); font-size:11px; color:var(--signal); letter-spacing:.05em; text-transform:uppercase; display:block; margin-bottom:6px; }
.contact-info-item p{ margin:0; color:var(--paper); font-size:15px; }

/* ---------- Misc ---------- */
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.pill-list{ display:flex; flex-wrap:wrap; gap:10px; margin-top:20px; }
.pill{
  font-family:var(--font-mono); font-size:12px; border:1px solid var(--paper-line); border-radius:20px; padding:6px 14px; color:var(--slate);
}
.on-dark .pill{ border-color:var(--line-dark); color:var(--paper); }
.timeline{ border-left:1px solid var(--paper-line); padding-left:28px; display:flex; flex-direction:column; gap:36px; margin-left:6px; }
.timeline-item{ position:relative; }
.timeline-item::before{ content:""; position:absolute; left:-33px; top:4px; width:9px; height:9px; border-radius:50%; background:var(--signal); box-shadow:0 0 0 3px var(--signal-glow); }
.timeline-item .tl-year{ font-family:var(--font-mono); font-size:12px; color:var(--signal-deep); margin-bottom:6px; display:block; }

.value-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.value-card{ padding:28px; border:1px solid var(--paper-line); border-radius:6px; background:var(--white); }
.value-card h4{ font-size:17px; }

.badge-row{ display:flex; flex-wrap:wrap; gap:12px; }
.badge{
  border:1px solid var(--paper-line); border-radius:4px; padding:10px 16px;
  font-family:var(--font-mono); font-size:12px; color:var(--slate); display:flex; align-items:center; gap:8px;
}
.badge::before{ content:"✓"; color:var(--signal-deep); font-weight:700; }

/* Responsive */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns:1fr; }
  .card-grid{ grid-template-columns:repeat(2,1fr); }
  .feat-grid{ grid-template-columns:repeat(2,1fr); }
  .flow{ grid-template-columns:repeat(3,1fr); row-gap:36px; }
  .flow::before{ display:none; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .statbar-grid{ grid-template-columns:repeat(2,1fr); }
  .stat:nth-child(2){ border-right:none; }
  .two-col{ grid-template-columns:1fr; }
  .value-grid{ grid-template-columns:1fr; }
}
@media (max-width: 720px){
  .nav-links, .nav-cta .btn{ display:none; }
  .nav-toggle{ display:block; }
  .card-grid, .feat-grid, .flow{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  .statbar-grid{ grid-template-columns:1fr 1fr; }
  .section{ padding:64px 0; }
  .section-head{ flex-direction:column; align-items:flex-start; }
  .form-grid{ grid-template-columns:1fr; }
  .cta-inner{ flex-direction:column; align-items:flex-start; }
  .compare-table{ font-size:12.5px; }
}

/* Mobile nav panel */
.mobile-nav{
  position:fixed; inset:76px 0 0 0; background:var(--ink); z-index:99;
  padding:32px; display:none; overflow-y:auto;
}
.mobile-nav.open{ display:block; }
.mobile-nav a{ display:block; padding:16px 0; border-bottom:1px solid var(--line-dark); color:var(--paper); font-size:18px; font-family:var(--font-display); }
.mobile-nav .m-sub a{ font-size:15px; color:#B9C4C8; padding:12px 0 12px 16px; font-family:var(--font-body); }