:root{
  --bg:#0f172a; --card:#0b1224; --line:#1f2937; --text:#e5e7eb; --muted:#94a3b8; --accent:#38bdf8;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:14px/1.4 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu}
header{padding:10px 16px;border-bottom:1px solid var(--line);background:#0b1224}
main{max-width:1200px;margin:16px auto;padding:0 16px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px}
h2{margin:6px 0 10px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:6px 0}
.muted{color:var(--muted);font-size:12px}
.small{font-size:12px;color:#a5b4fc}
button{background:#0b1224;border:1px solid #243147;color:var(--text);padding:7px 10px;border-radius:8px;cursor:pointer}
button:hover{border-color:#33507a}
label>input[type="range"]{vertical-align:middle}
textarea{width:100%;min-height:130px;background:#0b1224;border:1px solid var(--line);border-radius:8px;color:var(--text);padding:8px}

#wrap{position:relative;height:520px;border:2px dashed #334155;border-radius:10px;background:#0b1224;overflow:hidden}
#cv{position:absolute;inset:0;width:100%;height:100%;cursor:grab}
#cv.drag{cursor:grabbing}