:root{
  --gh-navy:#0b1030;
  --gh-blue:#0b66ff;
  --ink:#0d1220;
  --bg:#070a16;
  --card:#0e1330;
  --card2:#0b0f25;
  --line:rgba(255,255,255,.12);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.70);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background: radial-gradient(1200px 900px at 20% -10%, rgba(11,102,255,.20), transparent 60%),
              radial-gradient(900px 700px at 90% 10%, rgba(255,255,255,.06), transparent 60%),
              linear-gradient(180deg, #070a16, #050714);
}

.wrap{max-width:1100px;margin:0 auto;padding:16px}
.top{
  position:sticky;top:0;z-index:10;
  background: linear-gradient(180deg, rgba(11,16,48,.96), rgba(11,16,48,.86));
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.top__inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:12px;min-width:260px}
.brand__logo{width:58px;height:58px;border-radius:14px;box-shadow:0 8px 22px rgba(0,0,0,.35)}
.brand__title{font-weight:850;font-size:18px;letter-spacing:.2px}
.brand__sub{color:var(--muted);font-size:13px;margin-top:2px}

.actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.btn{
  appearance:none;border:1px solid rgba(255,255,255,.14);
  background: linear-gradient(180deg, rgba(11,102,255,.95), rgba(11,102,255,.70));
  color:white;font-weight:750;
  padding:10px 14px;border-radius:14px;
  cursor:pointer;
  box-shadow:0 12px 26px rgba(11,102,255,.18);
}
.btn:hover{filter:brightness(1.03)}
.btn:active{transform:translateY(1px)}
.btn--ghost{
  background:transparent;
  box-shadow:none;
}

.grid{
  display:grid;
  grid-template-columns: 1.2fr 1.2fr .9fr;
  gap:16px;
  align-items:start;
}
@media (max-width: 980px){
  .grid{grid-template-columns:1fr}
}

.card{
  background: linear-gradient(180deg, rgba(14,19,48,.92), rgba(8,11,28,.92));
  border:1px solid rgba(255,255,255,.12);
  border-radius:22px;
  padding:16px;
  box-shadow:0 18px 50px rgba(0,0,0,.35);
}
.card h2{
  margin:0 0 12px;
  font-size:16px;
  letter-spacing:.2px;
}
.card h3{
  margin:0 0 10px;
  font-size:14px;
  color:rgba(255,255,255,.88);
}

.fieldset{
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  border-radius:18px;
  padding:12px;
}

.cols2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width: 560px){
  .cols2{grid-template-columns:1fr}
}

.row{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}
label{font-size:12px;color:rgba(255,255,255,.78)}
input{
  height:42px;border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.18);
  color:var(--text);
  padding:0 12px;
  outline:none;
}
input:focus{border-color: rgba(11,102,255,.65); box-shadow:0 0 0 3px rgba(11,102,255,.18)}

.seg{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:12px}
.radio{display:flex;gap:10px;align-items:center;padding:10px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03);cursor:pointer}
.radio input{height:auto}
.hidden{display:none}

.preview{grid-column:3 / 4; position:sticky; top:92px}
@media (max-width: 980px){ .preview{grid-column:auto; position:static} }

.muted{color:var(--muted)}
.mini{
  margin-top:12px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.18);
  padding:12px;
  min-height:180px;
  font-size:12px;
  line-height:1.45;
  white-space:pre-wrap;
}
.small{font-size:12px;margin-top:10px}
.hint{margin-top:10px;color:var(--muted);font-size:12px}
.pill{display:inline-block;margin-left:6px;padding:6px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03)}

.footer{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:rgba(255,255,255,.84);padding-bottom:30px}
.dot{display:inline-block;width:10px;height:10px;border-radius:999px;background:var(--gh-blue);margin-right:8px;box-shadow:0 0 0 4px rgba(11,102,255,.18)}