:root{
  --bg:#05070c;
  --bg2:#070b14;
  --text:rgba(255,255,255,.88);
  --muted:rgba(255,255,255,.60);
  --soft:rgba(255,255,255,.14);
  --soft2:rgba(255,255,255,.08);
  --accent:rgba(120,210,255,.85);
  --shadow: 0 20px 80px rgba(0,0,0,.55);
  --radius: 18px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 700px at 20% 10%, rgba(20,60,120,.25), transparent 55%),
              radial-gradient(900px 600px at 85% 30%, rgba(0,160,255,.10), transparent 60%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  color:var(--text);
  letter-spacing:.2px;
  overflow-x:hidden;
}
.currents{
  pointer-events:none;
  position:fixed; inset:-20%;
  background:
    radial-gradient(600px 300px at 20% 30%, rgba(40,120,180,.12), transparent 60%),
    radial-gradient(700px 360px at 80% 60%, rgba(20,90,160,.10), transparent 62%);
  animation: drift 26s linear infinite alternate;
  filter: blur(22px);
  opacity:.7;
}
@keyframes drift{from{transform:translateY(-2%) translateX(-1%)}to{transform:translateY(2%) translateX(1%)}}
.grain{
  pointer-events:none;
  position:fixed; inset:0;
  opacity:.08;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}
.vignette{pointer-events:none; position:fixed; inset:-10%; background:radial-gradient(circle at 50% 40%, transparent 35%, rgba(0,0,0,.62) 72%)}
.glow{pointer-events:none; position:fixed; inset:-20%; background:radial-gradient(800px 520px at 50% 10%, rgba(120,210,255,.10), transparent 60%); filter:blur(10px); opacity:.9}

.nav{
  position:fixed; top:0; left:0; right:0;
  display:flex; justify-content:space-between; align-items:center;
  padding:14px 16px;
  background: linear-gradient(180deg, rgba(5,7,12,.78), rgba(5,7,12,0));
  backdrop-filter: blur(10px);
  z-index:10;
}
.brand{display:flex; align-items:center; gap:10px}
.dot{
  width:10px;height:10px;border-radius:999px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.9), rgba(120,210,255,.6));
  box-shadow: 0 0 20px rgba(120,210,255,.25);
}
.brand__name{font-size:12px; letter-spacing:2.4px; text-transform:uppercase; color:rgba(255,255,255,.80)}
.nav__right{display:flex; gap:10px; align-items:center; flex-wrap:wrap; justify-content:flex-end}
.nav__link{
  font-size:11px; letter-spacing:2px; text-transform:uppercase;
  text-decoration:none; color:rgba(255,255,255,.72);
  padding:9px 10px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:999px;
}
.nav__link:hover{border-color:rgba(120,210,255,.32); color:rgba(255,255,255,.92)}
.license{
  font-size:11px;
  color:rgba(255,255,255,.64);
  border:1px solid rgba(255,255,255,.10);
  padding:9px 10px;
  border-radius:999px;
  background: rgba(0,0,0,.20);
}

main{max-width:1120px; margin:0 auto; padding:84px 16px 60px}
.hero{padding:44px 0 10px}
.kicker{color:rgba(120,210,255,.75); letter-spacing:2.2px; text-transform:uppercase; font-size:12px; margin:0 0 12px}
h1{margin:0 0 12px; font-weight:500; line-height:1.08; font-size:clamp(34px, 5.5vw, 58px)}
.lead{max-width:820px; color:rgba(255,255,255,.72); line-height:1.7; font-size:16px; margin:0 0 18px}
.muted{color:rgba(255,255,255,.55)}
.fine{font-size:12px; color:rgba(255,255,255,.58); line-height:1.6}

.cards{display:grid; grid-template-columns:repeat(12,1fr); gap:14px; margin:16px 0 10px}
.card{
  grid-column:span 6;
  background: rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding:16px 16px;
  box-shadow: var(--shadow);
}
.card h2{margin:0 0 10px; font-size:13px; letter-spacing:2px; text-transform:uppercase; font-weight:500}
.card h3{margin:0 0 8px; font-size:13px; letter-spacing:1.2px; text-transform:uppercase; font-weight:500}
.card p{margin:0; color:rgba(255,255,255,.70); line-height:1.65}
.card ul, .card ol{margin:8px 0 0; color:rgba(255,255,255,.70); line-height:1.65}
.pillrow{display:flex; flex-wrap:wrap; gap:8px; margin-top:12px}
.pill{
  font-size:11px; letter-spacing:1.2px; text-transform:uppercase;
  color:rgba(255,255,255,.70);
  border:1px solid rgba(255,255,255,.10);
  padding:7px 9px; border-radius:999px;
  background: rgba(255,255,255,.03);
}

.section{padding:28px 0}
.section__head{margin-bottom:12px}
.section__head h2{margin:0 0 6px; font-size:14px; letter-spacing:3px; text-transform:uppercase; color:rgba(120,210,255,.78)}
.section__head p{margin:0; color:rgba(255,255,255,.68)}

.builder{display:grid; grid-template-columns: 1fr 1fr; gap:14px}
.panel{
  background: rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding:14px;
  box-shadow: var(--shadow);
}
.panel--output{padding:14px}
label{display:block; font-size:11px; letter-spacing:1.8px; text-transform:uppercase; color:rgba(255,255,255,.72); margin:10px 0 6px}
input, select{
  width:100%;
  background: rgba(0,0,0,.25);
  border:1px solid rgba(255,255,255,.12);
  border-radius: 12px;
  padding:11px 12px;
  color:rgba(255,255,255,.86);
  outline:none;
}
input:focus, select:focus{border-color:rgba(120,210,255,.35); box-shadow:0 0 0 6px rgba(120,210,255,.06)}
.row{display:grid; grid-template-columns:1fr 1fr; gap:10px}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 14px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
  color:rgba(255,255,255,.86);
  text-decoration:none;
  letter-spacing:1.2px;
  text-transform:uppercase;
  font-size:12px;
  cursor:pointer;
}
.btn:hover{border-color:rgba(120,210,255,.32); box-shadow:0 0 0 6px rgba(120,210,255,.06)}
.btn--ghost{background:transparent}
.btn--full{width:100%; background:linear-gradient(180deg, rgba(120,210,255,.18), rgba(120,210,255,.06))}

.output__head{display:flex; justify-content:space-between; align-items:center; gap:10px}
.output__head h3{margin:0; font-size:13px; letter-spacing:1.2px; text-transform:uppercase; font-weight:500}
.out{
  margin:12px 0 0;
  padding:12px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.25);
  color:rgba(235,245,255,.92);
  min-height:260px;
  white-space:pre-wrap;
  line-height:1.55;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size:12px;
}

.grid3{display:grid; grid-template-columns: repeat(3, 1fr); gap:14px; margin-bottom:14px}
.grid2{display:grid; grid-template-columns: repeat(2, 1fr); gap:14px}

.overlayGrid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:12px;
}
.overlayCard{
  background: rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding:12px;
  box-shadow: var(--shadow);
}
.overlayCard img{width:100%; height:auto; border-radius: 12px; border:1px solid rgba(255,255,255,.10); background: rgba(0,0,0,.25)}
.overlayCard a{display:inline-block; margin-top:10px}

.footer{padding:36px 0 10px; opacity:.85; text-align:center}

/* Responsive */
@media (max-width: 980px){
  .cards .card{grid-column:span 12}
  .builder{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .overlayGrid{grid-template-columns: repeat(2, 1fr)}
  main{padding-top:96px}
  .nav__right{gap:8px}
  .license{display:none} /* keep clean on mobile */
}
@media (prefers-reduced-motion: reduce){
  .currents{animation:none}
}