/* =========================================================
   VOLT & BOLT ELECTRICAL — Industrial technical theme
   Mobile-first. Min target viewport 360px.
   ========================================================= */

:root{
  --bg:        #0B0B0B;
  --bg-2:      #131313;
  --bg-3:      #1B1B1B;
  --fg:        #FAFAFA;
  --fg-2:      #B7B7B7;
  --fg-3:      #6E6E6E;
  --line:      rgba(255,255,255,.08);
  --line-2:    rgba(255,255,255,.16);
  --volt:      #E5FF3C;
  --volt-dim:  #C8E020;
  --warn:      #FF5C3C;
  --ok:        #6CFC9D;

  --display: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --body:    "Hanken Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth }
html,body{margin:0;padding:0}
body{
  font-family:var(--body);
  font-size:16px;
  line-height:1.55;
  color:var(--fg);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

/* ---------- LAYOUT ---------- */
.wrap{ max-width:1280px; margin:0 auto; padding:0 20px }
@media (min-width:768px){ .wrap{ padding:0 32px } }
@media (min-width:1200px){ .wrap{ padding:0 48px } }

/* technical grid backdrop */
.grid-bg{
  position:relative;
}
.grid-bg::before{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
  mask-image:linear-gradient(180deg, black 70%, transparent);
}

h1,h2,h3,h4{
  font-family:var(--display);
  font-weight:600;
  letter-spacing:-.02em;
  line-height:1;
  margin:0;
  text-wrap:balance;
}
h2{ font-size:clamp(36px, 5.6vw, 68px) }
h3{ font-size:clamp(22px, 2.6vw, 28px); line-height:1.1 }
p{ margin:0; text-wrap:pretty }
.lead{ font-family:var(--body); font-size:18px; line-height:1.55; color:var(--fg-2); max-width:54ch }

.tag, .eyebrow{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--volt);
  display:inline-flex; align-items:center; gap:10px;
}
.tag::before{ content:"//"; color:var(--fg-3) }
.tag.no-marker::before{ content:none }

.mono{ font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--fg-3) }

/* ---------- HEADER ---------- */
.nav{
  position:sticky; top:0; z-index:40;
  background:rgba(11,11,11,.9);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px;
  padding:14px 20px;
  max-width:1280px; margin:0 auto;
}
@media (min-width:768px){ .nav-inner{ padding:16px 32px } }

.brand{
  font-family:var(--display);
  font-weight:700;
  font-size:18px;
  letter-spacing:-.01em;
  display:flex; align-items:center; gap:10px;
}
.brand .mark{
  display:inline-grid; place-items:center;
  width:28px; height:28px;
  background:var(--volt);
  color:var(--bg);
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
}
.brand .mark span{ transform:translateY(-1px) }
.brand .amp{ color:var(--volt); padding:0 2px }

.nav-links{ display:none; gap:24px; font-family:var(--mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase }
@media (min-width:900px){ .nav-links{ display:flex } }
.nav-links a{ color:var(--fg-2); transition:color .2s ease }
.nav-links a:hover{ color:var(--volt) }
.nav-links a.live::before{
  content:"●"; color:var(--ok); margin-right:6px; font-size:8px;
}

.call-cta{
  display:inline-flex; align-items:center; gap:10px;
  padding:11px 14px;
  background:var(--volt);
  color:var(--bg);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  font-weight:500;
  transition:background .2s ease, transform .15s ease;
}
.call-cta:hover{ background:#FFFFFF }
.call-cta:active{ transform:translateY(1px) }
.call-cta .num{ font-family:var(--body); font-weight:600; font-size:14px; letter-spacing:.02em }
.call-cta .dot{
  width:8px; height:8px; background:var(--bg); border-radius:50%;
  position:relative;
}
.call-cta .dot::after{
  content:""; position:absolute; inset:-3px;
  border:1px solid var(--bg); border-radius:50%; opacity:.5;
  animation:vbpulse 1.6s infinite;
}
@keyframes vbpulse{
  0%{ transform:scale(1); opacity:.5 }
  100%{ transform:scale(1.6); opacity:0 }
}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex; align-items:center; gap:14px;
  padding:18px 24px;
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.06em;
  text-transform:uppercase;
  font-weight:500;
  transition:background .2s ease, color .2s ease, transform .15s ease;
  border:1px solid currentColor;
}
.btn .arrow{ width:22px; height:1px; background:currentColor; position:relative }
.btn .arrow::after{
  content:""; position:absolute; right:0; top:-3px;
  width:7px; height:7px;
  border-top:1px solid currentColor; border-right:1px solid currentColor;
  transform:rotate(45deg);
}
.btn:hover .arrow{ width:34px }
.btn.primary{
  background:var(--volt); color:var(--bg); border-color:var(--volt);
}
.btn.primary:hover{ background:#fff; border-color:#fff }
.btn.ghost{ color:var(--fg); background:transparent; }
.btn.ghost:hover{ background:var(--fg); color:var(--bg) }
.btn.invert{ background:var(--bg); color:var(--fg); border-color:var(--line-2) }
.btn.invert:hover{ background:var(--fg); color:var(--bg) }

/* ---------- SECTIONS ---------- */
section{ position:relative; padding:72px 0 }
@media (min-width:768px){ section{ padding:112px 0 } }

.sec-head{
  display:grid; grid-template-columns:1fr; gap:20px; margin-bottom:48px;
}
.sec-head .num{
  font-family:var(--mono); font-size:11px; letter-spacing:.16em; color:var(--fg-3); text-transform:uppercase;
  display:flex; justify-content:space-between; align-items:baseline;
  border-top:1px solid var(--line);
  padding-top:18px;
  margin-bottom:8px;
}
.sec-head .num strong{ color:var(--volt); font-weight:500 }
@media (min-width:880px){
  .sec-head.cols{ grid-template-columns: 1.3fr .7fr; gap:48px; align-items:end }
  .sec-head.cols .num{ grid-column: 1 / -1 }
}

/* ---------- FOOTER ---------- */
footer{
  background:#070707;
  border-top:1px solid var(--line);
  padding:64px 0 24px;
  color:var(--fg-2);
  font-size:14px;
  position:relative;
  overflow:hidden;
}
footer .glyph{
  position:absolute; right:-40px; bottom:-80px;
  font-family:var(--display); font-weight:700;
  font-size:clamp(140px, 22vw, 360px); line-height:1;
  color:rgba(229,255,60,.06);
  letter-spacing:-.04em;
  pointer-events:none;
}
footer h4{
  font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase;
  color:var(--volt); font-weight:500; margin:0 0 18px;
}
.foot-grid{ display:grid; gap:40px; grid-template-columns:1fr; position:relative; z-index:1 }
@media (min-width:720px){ .foot-grid{ grid-template-columns: 2fr 1fr 1fr 1fr } }
.foot-col ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:10px }
.foot-col a:hover{ color:var(--volt) }
.foot-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  border-top:1px solid var(--line);
  padding-top:24px; margin-top:48px;
  font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--fg-3);
  position:relative; z-index:1;
}

/* ---------- IMAGE PLACEHOLDERS ---------- */
.img-slot{
  position:relative;
  background:#171717;
  border:1px solid var(--line);
  overflow:hidden;
}
.img-slot::before{
  content:""; position:absolute; inset:0;
  background-image:repeating-linear-gradient(
    135deg,
    rgba(229,255,60,.03) 0 14px,
    transparent 14px 28px);
}
.img-slot::after{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:32px 32px;
  pointer-events:none;
}
.img-slot .label{
  position:absolute; left:14px; bottom:14px;
  font-family:var(--mono); font-size:10px; letter-spacing:.14em; text-transform:uppercase; color:var(--fg-2);
  background:rgba(11,11,11,.6);
  padding:6px 8px; border:1px solid var(--line);
}
.img-slot .corner{
  position:absolute; right:12px; top:12px;
  width:12px; height:12px;
  border-top:1px solid var(--volt);
  border-right:1px solid var(--volt);
}
.img-slot .corner.bl{ left:12px; right:auto; top:auto; bottom:12px; border:0; border-bottom:1px solid var(--volt); border-left:1px solid var(--volt) }

/* ---------- FORMS ---------- */
.field{ display:flex; flex-direction:column; gap:6px; margin-bottom:18px }
.field label{
  font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--fg-3);
}
.field input, .field textarea, .field select{
  font:inherit; color:inherit;
  background:transparent;
  border:0; border-bottom:1px solid var(--line-2);
  padding:10px 0;
  outline:none;
  transition:border-color .2s ease;
}
.field input:focus, .field textarea:focus, .field select:focus{
  border-bottom-color:var(--volt);
}
.field textarea{ min-height:120px; resize:vertical }
.field .hint{ font-size:12px; color:var(--fg-3) }
.field select{ appearance:none; background:transparent }
.field select option{ background:var(--bg-2); color:var(--fg) }

/* utility */
.skip{ position:absolute; left:-9999px }
.skip:focus{ left:12px; top:12px; background:var(--volt); color:var(--bg); padding:8px 12px; z-index:100 }
hr{ border:0; border-top:1px solid var(--line); margin:0 }
.center{ text-align:center }