:root{
  color-scheme:dark;
  --bg:#070b14;--panel:#0d1422;--line:#253148;--muted:#8e9bb1;
  --text:#f7f9fc;--accent:#65e6b4;--danger:#ff7272;--blue:#79a8ff;
}
*{box-sizing:border-box}
body{
  margin:0;min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,-apple-system,
  BlinkMacSystemFont,"Segoe UI",sans-serif;background:
  radial-gradient(circle at 15% 0%,#112746 0,transparent 37%),
  radial-gradient(circle at 100% 100%,#112c27 0,transparent 35%),var(--bg);
  color:var(--text)
}
.wrap{width:min(900px,calc(100% - 28px));margin:0 auto;padding:70px 0}
.card{
  border:1px solid var(--line);border-radius:24px;background:rgba(13,20,34,.94);
  box-shadow:0 30px 100px rgba(0,0,0,.4);padding:36px
}
.eyebrow{font-size:12px;letter-spacing:.16em;color:var(--accent);font-weight:800}
h1{font-size:clamp(32px,7vw,58px);line-height:.95;margin:12px 0 18px}
h1 span{color:var(--accent)}
.lead{max-width:680px;color:var(--muted);font-size:16px;line-height:1.65;margin-bottom:32px}
label{font-size:12px;font-weight:800;letter-spacing:.06em;display:block;margin:0 0 8px}
.inputrow,.outputrow{display:flex;gap:10px}
input,textarea{
  width:100%;border:1px solid var(--line);background:#070c16;color:var(--text);
  border-radius:13px;outline:none;padding:15px;font:inherit
}
input:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(121,168,255,.12)}
textarea{min-height:94px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}
button{
  border:0;border-radius:13px;padding:0 22px;font-weight:900;cursor:pointer;
  background:var(--accent);color:#062118;min-height:51px
}
button:disabled{opacity:.55;cursor:wait}
.loading,.error,.result{margin-top:24px;border:1px solid var(--line);border-radius:16px;padding:18px}
.loading{display:flex;align-items:center;gap:14px;color:var(--muted)}
.loading strong,.loading span{display:block}.loading strong{color:var(--text);margin-bottom:3px}
.spinner{width:30px;height:30px;border-radius:50%;border:3px solid #26344d;border-top-color:var(--accent);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.error{border-color:rgba(255,114,114,.45);background:rgba(255,114,114,.06);color:#ffb4b4;line-height:1.5}
.statusline{display:flex;gap:11px;align-items:center;margin-bottom:17px}
.statusline small,.statusline strong{display:block}
.statusline small{font-size:10px;color:var(--muted);letter-spacing:.12em;margin-bottom:2px}
.dot{width:13px;height:13px;border-radius:50%;background:var(--accent);box-shadow:0 0 22px var(--accent)}
.metricgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:20px}
.metricgrid div{border:1px solid var(--line);background:#090f1a;border-radius:12px;padding:12px}
.metricgrid span,.metricgrid strong{display:block}.metricgrid span{color:var(--muted);font-size:11px;margin-bottom:4px}
.metricgrid strong{font-size:17px}
.note{color:var(--muted);line-height:1.5;margin-bottom:0;font-size:13px}
details{margin-top:24px;color:var(--muted);font-size:13px;line-height:1.55}
summary{color:#cdd5e3;cursor:pointer;font-weight:700}
code{color:var(--accent)}
.hidden{display:none!important}
@media(max-width:640px){
  .wrap{padding:20px 0}.card{padding:22px 16px;border-radius:18px}
  .inputrow,.outputrow{display:block}
  button{width:100%;margin-top:9px}
  .metricgrid{grid-template-columns:1fr}
}

pre{
  white-space:pre-wrap;word-break:break-word;background:#070c16;color:#cbd5e1;
  border:1px solid var(--line);padding:14px;border-radius:12px;max-height:420px;
  overflow:auto;font-size:11px;line-height:1.45
}