/* Minimal, dark, clean */
:root{
  --bg:#0b0f14;--panel:#0f1620;--muted:#1a2332;--text:#e3e8ef;--sub:#94a3b8;--accent:#7dd3fc;
  --ok:#34d399;--warn:#fbbf24;--err:#f87171;--border:#263244;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;margin:0}
header{position:sticky;top:0;background:linear-gradient(180deg,var(--bg),rgba(11,15,20,.7));border-bottom:1px solid var(--border);padding:12px 16px;z-index:10}
h1{margin:0 0 6px 0;font-size:18px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
main{padding:16px;display:grid;gap:16px}
section{display:block}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:12px}
.panel.right{display:flex;flex-direction:column}
.panelHeader{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding-bottom:8px;margin-bottom:8px}
.output{min-height:320px;background:var(--muted);border-radius:12px;padding:10px;white-space:pre;overflow:auto}
.scroll{max-height:220px;overflow:auto;background:var(--muted);border-radius:12px;padding:10px}
.small{max-height:160px}
.row.two{grid-template-columns:1fr 1fr;display:grid;gap:12px}
.muted{color:var(--sub);font-size:12px}
.diff{height:50vh}
.editor{height:60vh;border:1px solid var(--border);border-radius:12px}
.mini-editor{height:28vh;border:1px dashed var(--border);border-radius:10px}
.hidden{display:none}
button{background:var(--muted);border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:10px;cursor:pointer}
button.secondary{background:#1e293b}
button.ghost{background:transparent;border-color:var(--border)}
button:hover{border-color:#334155}
select{background:var(--muted);border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:8px}
footer{padding:12px 16px;color:var(--sub);border-top:1px solid var(--border)}
.badge{font-size:12px;padding:2px 8px;border-radius:999px;background:#1f2937;border:1px solid #374151;margin-left:6px}
.badge.ok{background:#064e3b;border-color:#065f46;color:#a7f3d0}
.badge.warn{background:#3f1d1d;border-color:#7f1d1d;color:#fecaca}
#editor.dragging{outline:2px dashed var(--accent)}