:root {
  --bg:#0f171e; --panel:#192733; --panel2:#223442; --line:rgba(255,255,255,.11);
  --text:#f4f6f7; --muted:#9fb0bb; --accent:#e6b15b; --danger:#e17c73;
}
*{box-sizing:border-box} html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}
button,input,select{font:inherit} button{cursor:pointer} a{color:var(--muted);text-decoration:none}.editor-topbar{height:64px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#111d25;position:sticky;top:0;z-index:20}.editor-topbar>div{display:flex;gap:14px;align-items:center}.editor-topbar strong{font-size:16px}.editor-topbar span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.editor-topbar button,.workspace-toolbar button{border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);border-radius:9px;padding:8px 12px}.editor-topbar button.primary{background:var(--accent);color:#2b200f;border-color:transparent;font-weight:800}.editor-layout{display:grid;grid-template-columns:330px minmax(0,1fr);min-height:calc(100vh - 64px)}.editor-sidebar{border-right:1px solid var(--line);background:#14212a;padding:18px;overflow:auto}.editor-sidebar section{padding:0 0 18px;margin-bottom:18px;border-bottom:1px solid var(--line)}h2{font-size:13px;text-transform:uppercase;letter-spacing:.11em;color:#dce6ea;margin:0 0 12px}.editor-sidebar label{display:grid;gap:6px;color:var(--muted);font-size:12px;margin:10px 0}.editor-sidebar input,.editor-sidebar select{width:100%;background:#0f1a21;border:1px solid var(--line);color:var(--text);border-radius:8px;padding:8px 9px}.editor-sidebar input[type="range"]{padding:0}.hint{color:var(--muted);font-size:11px;line-height:1.55}.hint code{color:#e9c988}.section-row{display:flex;justify-content:space-between;align-items:center}.section-row h2{margin:0}.section-row span{color:var(--accent);font-weight:800}.difference-list{display:grid;gap:7px;margin-top:12px}.difference-row{display:grid;grid-template-columns:32px 1fr auto;gap:8px;align-items:center;border:1px solid var(--line);border-radius:9px;background:rgba(255,255,255,.03);padding:8px;text-align:left;color:var(--text)}.difference-row.selected{border-color:var(--accent);background:rgba(230,177,91,.08)}.difference-row .id{width:27px;height:27px;display:grid;place-items:center;border-radius:50%;background:#0f1a21;color:var(--accent);font-weight:800}.difference-row small{display:block;color:var(--muted);margin-top:2px}.difficulty-chip{text-transform:uppercase;letter-spacing:.08em;font-size:9px;color:var(--muted)}.editor-workspace{padding:20px;min-width:0}.workspace-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin-bottom:12px;color:var(--muted);font-size:12px}.workspace-toolbar .danger{color:#ffd0cc;border-color:rgba(225,124,115,.45)}.workspace-toolbar button:disabled{opacity:.4;cursor:not-allowed}.editor-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.preview-label{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 7px 2px}.preview{aspect-ratio:16/10;position:relative;overflow:hidden;border:1px solid var(--line);border-radius:12px;background:#0b1217;cursor:crosshair}.preview img{display:block;width:100%;height:100%;object-fit:fill;user-select:none;pointer-events:none}.hotspot-layer{position:absolute;inset:0;pointer-events:none}.hotspot{position:absolute;transform:translate(-50%,-50%);border-radius:50%;border:2px dashed #7dd7ee;background:rgba(125,215,238,.10);display:grid;place-items:center;font-size:10px;font-weight:900;color:white}.hotspot.selected{border-style:solid;border-color:var(--accent);box-shadow:0 0 0 4px rgba(230,177,91,.16)}.empty-state{position:absolute;inset:0;display:grid;place-items:center;color:#60727d;font-size:14px;pointer-events:none}.inspector{margin-top:14px;display:grid;grid-template-columns:1.2fr repeat(4,1fr);border:1px solid var(--line);border-radius:10px;overflow:hidden}.inspector div{padding:11px 13px;background:var(--panel);min-width:0}.inspector div+div{border-left:1px solid var(--line)}.inspector span{display:block;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.1em}.inspector strong{display:block;margin-top:3px;font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.json-preview{margin-top:14px;border:1px solid var(--line);border-radius:10px;background:#101a21}.json-preview summary{padding:12px;cursor:pointer;color:var(--muted);font-size:12px}.json-preview pre{margin:0;padding:14px;border-top:1px solid var(--line);max-height:300px;overflow:auto;color:#bceaf4;white-space:pre-wrap;word-break:break-word;font-size:11px}@media(max-width:900px){.editor-layout{grid-template-columns:1fr}.editor-sidebar{border-right:0;border-bottom:1px solid var(--line)}.editor-pair{grid-template-columns:1fr}}@media(max-width:600px){.editor-topbar{height:auto;min-height:64px;padding:10px 12px;align-items:flex-start;gap:10px}.editor-topbar>div{flex-wrap:wrap}.editor-layout{min-height:0}.editor-workspace{padding:12px}.inspector{grid-template-columns:1fr 1fr}.inspector div+div{border-left:0;border-top:1px solid var(--line)}}