:root{
  --bg:#0b1020;
  --card:#121a33;
  --text:#eaf0ff;
  --muted:#a9b4d0;
  --accent:#7aa2ff;
  --danger:#ff6b6b;
  --border:rgba(255,255,255,.12);
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:linear-gradient(180deg,var(--bg),#050816);color:var(--text)}
.container{max-width:1100px;margin:0 auto;padding:24px}
h1{margin:0 0 18px;font-size:26px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:900px){.grid{grid-template-columns:1fr}}
.card{background:rgba(18,26,51,.9);border:1px solid var(--border);border-radius:14px;padding:16px;backdrop-filter: blur(8px)}
h2{margin:0 0 10px;font-size:18px}
.label{display:block;margin:10px 0 6px;color:var(--muted);font-size:12px}
textarea,input,select{width:100%;background:#0a0f22;color:var(--text);border:1px solid var(--border);border-radius:10px;padding:10px;font-size:14px}
textarea{resize:vertical;min-height:96px}
.row{display:flex;gap:12px;align-items:center}
.row.wrap{flex-wrap:wrap}
button{background:var(--accent);color:#06102a;border:0;border-radius:10px;padding:10px 12px;font-weight:700;cursor:pointer}
button.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}
button:disabled{opacity:.5;cursor:not-allowed}
.error{color:var(--danger);margin:10px 0 0}
.muted{color:var(--muted)}
.preview{margin-top:12px;border:1px dashed var(--border);border-radius:12px;padding:10px}
.preview img{max-width:100%;height:auto;display:block;border-radius:10px}
.menu details{border:1px solid var(--border);border-radius:12px;padding:10px;margin-top:10px;background:rgba(10,15,34,.55)}
.menu summary{cursor:pointer;color:var(--text);font-weight:700}
pre{white-space:pre-wrap;word-break:break-word;margin:8px 0 0;color:var(--text)}
code{color:#c8d4ff}
footer{margin-top:14px;font-size:12px}
.plotWrap{margin-top:10px;border:1px solid var(--border);border-radius:12px;background:rgba(10,15,34,.55);padding:10px}
#plot{width:100%;height:auto;display:block}