:root{
  --bg:#0f1724;
  --card:#0b1220;
  --accent:#4fd1c5;
  --muted:#9aa6b2;
  --glass: rgba(255,255,255,0.03);
  --radius:12px;
}
*{box-sizing:border-box;font-family:Inter,Segoe UI,Roboto,"Helvetica Neue",Arial;}
body{
  margin:0;
  background: linear-gradient(180deg,#071020 0%, #08111a 100%);
  color:#e6eef6;
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
}
.container{
  width:100%;
  max-width:980px;
}
.hero{
  background:var(--glass);
  border-radius:var(--radius);
  padding:28px;
  box-shadow: 0 6px 30px rgba(2,6,23,0.6);
  margin-bottom:20px;
}
h1{margin:0 0 6px;font-size:28px}
.lead{margin:0;color:var(--muted)}
.actions{margin-top:14px}
.btn{
  display:inline-block;
  padding:10px 16px;
  background:transparent;
  color:var(--accent);
  border:1px solid rgba(79,209,197,0.15);
  border-radius:10px;
  text-decoration:none;
  cursor:pointer;
}
.btn.primary{
  background:linear-gradient(90deg,var(--accent),#2dd4bf);
  color:#042027;
  border:none;
  box-shadow: 0 6px 18px rgba(47,128,128,0.12);
}
.scanner{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  padding:20px;
  border-radius:12px;
}
textarea#code{
  width:100%;
  min-height:320px;
  background:#06101a;
  border:1px solid rgba(255,255,255,0.03);
  color:#d9f6f0;
  padding:12px;
  border-radius:8px;
  font-family: "Courier New", monospace;
  font-size:13px;
  resize:vertical;
}
.row{margin-top:12px;display:flex;gap:8px}
.result{margin-top:18px;background:#06121a;padding:12px;border-radius:8px;border:1px solid rgba(255,255,255,0.02)}
.hidden{display:none}
.log .issue{
  background: rgba(255,255,255,0.02);
  border-left:4px solid rgba(255,80,80,0.9);
  padding:12px;margin-bottom:10px;border-radius:6px;
}
.log .ok{
  background: rgba(79,209,197,0.06);
  border-left:4px solid rgba(79,209,197,0.9);
  padding:12px;margin-bottom:10px;border-radius:6px;
}
.snippet{
  font-family: monospace;
  font-size:12px;
  background:#021018;
  padding:10px;border-radius:6px;margin-top:8px;white-space:pre-wrap;overflow:auto;
  border:1px solid rgba(255,255,255,0.02);
}
footer{margin-top:12px;color:var(--muted);font-size:13px}