/* ============================================================
   TRIVOLT SYSTEMS — design tokens
   bg: near-black blue-charcoal | signal: electric cyan | flag: signal amber
   ============================================================ */
:root{
  --bg:        #0a0e14;
  --surface:   #10151f;
  --surface-2: #141b27;
  --line:      #1e2632;
  --line-soft: #171e29;
  --text:      #e8edf4;
  --text-mute: #7c8b9e;
  --text-dim:  #4c5a6c;
  --signal:    #00e5c7;   /* electric cyan — "signal" accent */
  --signal-dim:#0a4a44;
  --flag:      #ff7a45;   /* amber — CTA / alert accent */
  --flag-dim:  #4a2a18;

  --display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --body:    'Inter', -apple-system, sans-serif;
  --mono:    'IBM Plex Mono', 'SF Mono', monospace;

  --max: 1180px;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:'';
  position:fixed; inset:0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:.35;
  pointer-events:none;
  z-index:0;
}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
.wrap{max-width:var(--max); margin:0 auto; padding:0 32px; position:relative; z-index:1;}
section{position:relative; z-index:1;}

::selection{background:var(--signal); color:#04120f;}
:focus-visible{outline:2px solid var(--signal); outline-offset:3px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important;}
}

/* ---------- typography ---------- */
h1,h2,h3,h4{font-family:var(--display); font-weight:600; letter-spacing:-0.01em; color:var(--text);}
h1{font-size:clamp(2.6rem,5.5vw,4.6rem); line-height:1.02; letter-spacing:-0.02em;}
h2{font-size:clamp(1.8rem,3.2vw,2.6rem); line-height:1.1;}
h3{font-size:1.25rem; line-height:1.3;}
p{color:var(--text-mute);}
.eyebrow{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--signal); display:flex; align-items:center; gap:10px; margin-bottom:18px;
}
.eyebrow::before{content:''; width:7px; height:7px; background:var(--signal); border-radius:1px; box-shadow:0 0 8px var(--signal);}
.mono{font-family:var(--mono);}

/* ---------- nav ---------- */
header.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(10,14,20,.82); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{max-width:var(--max); margin:0 auto; padding:18px 32px; display:flex; align-items:center; justify-content:space-between;}
.logo{display:flex; align-items:center; gap:10px; font-family:var(--display); font-weight:700; font-size:1.15rem; letter-spacing:-.01em;}
.logo-mark{
  width:30px; height:30px; border:1.5px solid var(--signal); border-radius:6px;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:.7rem; color:var(--signal); position:relative;
  background:radial-gradient(circle at 30% 20%, rgba(0,229,199,.25), transparent 70%);
  box-shadow:0 0 16px rgba(0,229,199,.35);
}
.logo-mark::after{content:''; position:absolute; inset:-5px; border:1px solid var(--line); border-radius:9px;}
.logo b{color:var(--signal);}
nav.links{display:flex; gap:34px; font-size:.92rem;}
nav.links a{color:var(--text-mute); transition:color .15s; 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:-19px; height:2px; background:var(--signal);}
.nav-cta{
  font-family:var(--mono); font-size:.8rem; padding:9px 18px; border:1px solid var(--signal);
  color:var(--signal); border-radius:5px; transition:all .15s; white-space:nowrap;
}
.nav-cta:hover{background:var(--signal); color:#04120f;}
.nav-toggle{
  display:none; align-items:center; justify-content:center;
  width:38px; height:38px; border:1px solid var(--line); border-radius:6px;
  background:none; cursor:pointer; flex-shrink:0; padding:0;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:''; display:block; width:18px; height:2px; background:var(--text); position:relative; transition:transform .2s, opacity .2s;
}
.nav-toggle span::before{position:absolute; top:-6px;}
.nav-toggle span::after{position:absolute; top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0; transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0; transform:rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px; font-family:var(--mono); font-size:.85rem;
  padding:13px 24px; border-radius:6px; transition:all .15s; cursor:pointer; border:1px solid transparent;
}
.btn-primary{background:var(--signal); color:#04120f; font-weight:600; box-shadow:0 10px 30px -10px rgba(0,229,199,.45);}
.btn-primary:hover{background:#1dfae0; transform:translateY(-2px); box-shadow:0 14px 34px -10px rgba(0,229,199,.6);}
.btn-ghost{border-color:var(--line); color:var(--text);}
.btn-ghost:hover{border-color:var(--signal); color:var(--signal); transform:translateY(-2px);}

/* ---------- ambient depth (glows) ---------- */
.hero, .page-hero{position:relative; overflow:hidden;}
.hero::before, .page-hero::before{
  content:''; position:absolute; z-index:0; pointer-events:none;
  top:-220px; left:50%; width:900px; height:560px; transform:translateX(-38%);
  background:
    radial-gradient(closest-side, rgba(0,229,199,.16), transparent 70%),
    radial-gradient(closest-side at 70% 60%, rgba(255,122,69,.10), transparent 65%);
  filter:blur(10px);
}
.page-hero::before{width:700px; height:420px; top:-180px;}
.hero > *, .page-hero > *{position:relative; z-index:1;}

/* ---------- hero ---------- */
.hero{padding:120px 0 90px; position:relative;}
.hero-grid{display:grid; grid-template-columns:1.15fr .85fr; gap:60px; align-items:center;}
.hero h1{margin-bottom:22px;}
.hero h1 .cy{color:var(--signal);}
.hero p.lead{font-size:1.15rem; max-width:520px; margin-bottom:36px;}
.hero-actions{display:flex; gap:14px; margin-bottom:56px;}
.hero-stats{display:flex; gap:40px; padding-top:28px; border-top:1px solid var(--line);}
.hstat b{font-family:var(--mono); font-size:1.5rem; color:var(--signal); display:block; text-shadow:0 0 18px rgba(0,229,199,.45);}
.hstat span{font-size:.78rem; color:var(--text-dim); text-transform:uppercase; letter-spacing:.08em;}

/* signature: signal path visual */
.signal-scope{
  background:linear-gradient(165deg, var(--surface-2), var(--surface));
  border:1px solid var(--line); border-radius:12px; padding:26px;
  font-family:var(--mono); font-size:.78rem;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.6), 0 0 0 1px rgba(0,229,199,.04), inset 0 1px 0 rgba(255,255,255,.03);
}
.scope-head{display:flex; justify-content:space-between; color:var(--text-dim); margin-bottom:18px; font-size:.7rem; letter-spacing:.08em;}
.scope-dot{width:8px; height:8px; border-radius:50%; background:var(--flag); display:inline-block; margin-right:6px; animation:blink 1.6s infinite;}
@keyframes blink{50%{opacity:.25;}}
.path{display:flex; flex-direction:column; gap:0;}
.path-node{display:flex; align-items:center; gap:14px; padding:13px 0; position:relative;}
.path-node .dot{width:10px; height:10px; border-radius:50%; background:var(--surface-2); border:2px solid var(--line); flex-shrink:0; z-index:1;}
.path-node.on .dot{border-color:var(--signal); background:var(--signal); box-shadow:0 0 10px var(--signal);}
.path-node:not(:last-child)::before{
  content:''; position:absolute; left:4px; top:24px; bottom:-13px; width:1px; background:var(--line);
}
.path-node .lbl{color:var(--text-mute);}
.path-node.on .lbl{color:var(--text);}
.path-node .tag{margin-left:auto; color:var(--text-dim); font-size:.68rem;}
.path-node.on .tag{color:var(--flag);}

/* ---------- section shell ---------- */
.section{padding:96px 0;}
.section.alt{background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.section-head{max-width:640px; margin-bottom:56px;}
.section-head p{font-size:1.05rem;}

/* ---------- cards / grid ---------- */
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:12px; overflow:hidden; box-shadow:0 24px 48px -28px rgba(0,0,0,.55);}
.grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:12px; overflow:hidden; box-shadow:0 24px 48px -28px rgba(0,0,0,.55);}
.card{background:var(--surface); padding:34px 30px; position:relative; transition:background .2s;}
.card::before{
  content:''; position:absolute; top:0; left:0; right:0; height:2px; transform:scaleX(0); transform-origin:left;
  background:linear-gradient(90deg, var(--signal), var(--flag)); transition:transform .25s ease;
}
.card:hover::before{transform:scaleX(1);}
.card:hover{background:var(--surface-2);}
.section.alt .card{background:var(--bg);}
.section.alt .card:hover{background:var(--surface);}
.card .tagline{
  font-family:var(--mono); font-size:.7rem; color:var(--signal); letter-spacing:.1em; margin-bottom:14px;
  display:inline-flex; align-items:center; gap:8px;
}
.card .tagline svg{width:16px; height:16px; flex-shrink:0;}
.grid-2.bare{background:none; border:none; box-shadow:none; gap:60px;}
.grid-2.bare .card{padding:0;}
.card h3{margin-bottom:12px;}
.card p{font-size:.94rem;}
.card ul{list-style:none; margin-top:16px; display:flex; flex-direction:column; gap:8px;}
.card ul li{font-size:.85rem; color:var(--text-mute); padding-left:16px; position:relative;}
.card ul li::before{content:'▸'; position:absolute; left:0; color:var(--signal);}

/* ---------- process strip ---------- */
.flow{display:flex; align-items:stretch; border:1px solid var(--line); border-radius:12px; overflow:hidden; background:var(--surface); box-shadow:0 24px 48px -28px rgba(0,0,0,.55);}
.flow-step{flex:1; padding:26px 22px; border-right:1px solid var(--line); position:relative; transition:background .2s;}
.flow-step:hover{background:var(--surface-2);}
.flow-step:last-child{border-right:none;}
.flow-step .fk{font-family:var(--mono); font-size:.68rem; color:var(--flag); letter-spacing:.1em; margin-bottom:10px; display:block;}
.flow-step h4{font-size:.98rem; margin-bottom:6px; font-family:var(--display);}
.flow-step p{font-size:.82rem; margin:0;}

/* ---------- comparison ---------- */
.compare{border:1px solid var(--line); border-radius:12px; overflow:hidden; box-shadow:0 24px 48px -28px rgba(0,0,0,.55);}
.compare table{width:100%; border-collapse:collapse; font-size:.92rem;}
.compare th, .compare td{padding:16px 22px; text-align:left; border-bottom:1px solid var(--line);}
.compare th{font-family:var(--mono); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--text-dim); background:var(--surface);}
.compare tr:last-child td{border-bottom:none;}
.compare td.us{color:var(--signal); font-weight:500;}
.compare td.them{color:var(--text-dim);}
.compare tbody tr:nth-child(odd) td{background:rgba(255,255,255,.012);}
.compare tbody tr{transition:background .15s;}
.compare tbody tr:hover td{background:rgba(0,229,199,.05);}

/* ---------- quote / cta band ---------- */
.band{
  padding:80px 0; text-align:center; border-top:1px solid var(--line); position:relative; overflow:hidden;
  background:
    radial-gradient(600px 260px at 50% 0%, rgba(0,229,199,.08), transparent 70%),
    linear-gradient(180deg, var(--surface), var(--bg));
}
.band h2{max-width:680px; margin:0 auto 30px;}
.band-actions{display:flex; gap:14px; justify-content:center;}

/* ---------- footer ---------- */
footer{
  border-top:1px solid var(--line); padding:56px 0 34px; position:relative;
  background:linear-gradient(180deg, var(--bg), var(--surface) 400%);
}
footer::before{
  content:''; position:absolute; top:-1px; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--signal), transparent);
  opacity:.5;
}
.foot-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; margin-bottom:48px;}
.foot-col h5{font-family:var(--mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--text-dim); margin-bottom:16px;}
.foot-col a, .foot-col p{display:block; font-size:.88rem; color:var(--text-mute); margin-bottom:10px;}
.foot-col a:hover{color:var(--signal);}
.foot-bottom{display:flex; justify-content:space-between; align-items:center; padding-top:28px; border-top:1px solid var(--line); font-size:.78rem; color:var(--text-dim); font-family:var(--mono);}
.placeholder-flag{
  background:var(--flag-dim); border:1px solid var(--flag); color:var(--flag);
  font-family:var(--mono); font-size:.72rem; padding:3px 10px; border-radius:4px; margin-left:10px;
}

/* ---------- page hero (inner pages) ---------- */
.page-hero{padding:76px 0 60px; border-bottom:1px solid var(--line);}
.page-hero h1{font-size:clamp(2.2rem,4.2vw,3.2rem);}
.page-hero p.lead{max-width:600px; font-size:1.05rem; margin-top:18px;}

/* ---------- responsive ---------- */

/* tablet */
@media (max-width:920px){
  .wrap{padding:0 24px;}
  .hero{padding:64px 0 56px;}
  .hero-grid{grid-template-columns:1fr; gap:44px;}
  .hero p.lead{max-width:none;}
  .hero-stats{flex-wrap:wrap; row-gap:18px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .grid-2{grid-template-columns:1fr;}
  .section{padding:64px 0;}

  .nav-inner{padding:16px 24px;}
  .nav-toggle{display:flex;}
  .nav-cta{padding:8px 14px; font-size:.76rem;}
  nav.links{
    display:flex; flex-direction:column; gap:0;
    position:fixed; top:0; right:0; height:100vh; width:min(78vw,320px);
    background:var(--surface); border-left:1px solid var(--line);
    padding:88px 28px 28px; z-index:60;
    transform:translateX(100%); transition:transform .25s ease;
  }
  nav.links.open{transform:translateX(0);}
  nav.links a{padding:16px 0; border-bottom:1px solid var(--line-soft); font-size:1.05rem;}
  nav.links a.active::after{display:none;}
  nav.links a.active{color:var(--signal);}
  .nav-scrim{
    display:none; position:fixed; inset:0; background:rgba(4,6,10,.6); z-index:55;
  }
  .nav-scrim.open{display:block;}

  .foot-grid{grid-template-columns:1fr 1fr; row-gap:32px;}
  .flow{flex-direction:column;}
  .flow-step{border-right:none; border-bottom:1px solid var(--line);}

  .compare{overflow-x:auto;}
  .compare table{min-width:560px;}
}

/* mobile */
@media (max-width:560px){
  .wrap{padding:0 18px;}
  h1{font-size:clamp(2.1rem,9vw,2.8rem);}
  .hero{padding:48px 0 44px;}
  .hero-actions{flex-direction:column; align-items:stretch;}
  .hero-actions .btn{width:100%; justify-content:center;}
  .hero-stats{gap:24px;}
  .grid-3{grid-template-columns:1fr;}
  .section-head{margin-bottom:36px;}
  .section{padding:48px 0;}

  .logo{font-size:1rem;}
  .logo-mark{width:26px; height:26px;}

  .band{padding:56px 0;}
  .band-actions{flex-direction:column; align-items:stretch;}
  .band-actions .btn{width:100%; justify-content:center;}

  .foot-grid{grid-template-columns:1fr; row-gap:28px;}
  .foot-bottom{flex-direction:column; gap:8px; align-items:flex-start;}

  .page-hero{padding:52px 0 40px;}
}