html, body { height: 100%; margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: #0b0f14; color: #e6edf3; }
.topbar { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:14px 16px; border-bottom:1px solid rgba(255,255,255,.06); position:sticky; top:0; background: rgba(11,15,20,.85); backdrop-filter: blur(10px); z-index:10; }
.brand { display:flex; gap:12px; align-items:center; }
.dot { width:10px; height:10px; border-radius:50%; background:#33b7e5; box-shadow: 0 0 12px rgba(126,231,135,.5); }
.title { font-weight: 650; letter-spacing: .2px; }
.subtitle { font-size: 12px; opacity:.75; margin-top:2px; }
.controls { display:flex; gap:10px; align-items:center; flex-wrap: wrap; }
.file input { display:none; }
.file span { display:inline-block; padding:9px 12px; border-radius:10px; border:1px solid rgba(255,255,255,.10); background: rgba(255,255,255,.03); cursor:pointer; font-size: 13px; }
.btn { padding:9px 12px; border-radius:10px; border:1px solid rgba(255,255,255,.10); background: rgba(255,255,255,.03); cursor:pointer; color:inherit; font-size:13px; }
.btn:hover, .file span:hover { background: rgba(255,255,255,.06); }
.wrap { display:grid; grid-template-columns: 340px 1fr; gap:16px; padding:16px; height: calc(100% - 62px); box-sizing:border-box; }
.panel { border:1px solid rgba(255,255,255,.08); border-radius:16px; padding:14px; background: rgba(255,255,255,.02); }
.panelTitle { font-size: 13px; opacity:.8; margin: 6px 0 10px; text-transform: uppercase; letter-spacing: .12em; }
.stats { display:grid; gap:8px; margin-bottom: 14px; }
.kv { display:flex; justify-content:space-between; gap:10px; padding:8px 10px; border-radius:12px; background: rgba(255,255,255,.03); border:1px solid rgba(255,255,255,.06); }
.k { opacity:.75; font-size: 12px; }
.v { font-weight:650; font-size: 12px; }
.tips { margin:0; padding-left: 18px; opacity:.85; font-size: 13px; line-height: 1.55; }
.viewport { position:relative; border:1px solid rgba(255,255,255,.08); border-radius:16px; overflow:hidden; background: radial-gradient(900px 400px at 20% 10%, rgba(126,231,135,.12), rgba(0,0,0,0)); }
#c { width: 100%; height: 100%; display:block; }
.hud { position:absolute; left:12px; bottom:12px; padding:8px 10px; border-radius:12px; background: rgba(0,0,0,.45); border:1px solid rgba(255,255,255,.10); font-size: 12px; opacity: .85; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
@media (max-width: 980px){
  .wrap { grid-template-columns: 1fr; height:auto; }
  .viewport { height: 68vh; }
}