*{box-sizing:border-box}
:root{
  --bg:#0e1220; --fg:#e8ecf1; --muted:#9aa4b2; --accent:#4ad97b; --accent2:#2d7ef7; --warn:#ffce5a; --bad:#ff6b6b;
  --panel:#171b2b; --line:#26304a;
}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.5 ui-sans-serif,system-ui,-apple-system,"Segoe UI","Helvetica Neue",Arial}
header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}
h1{margin:0;font-size:18px;font-weight:700}
.tag{display:inline-block;margin-left:6px;padding:2px 6px;border-radius:6px;background:#213055;color:#cfe3ff;font-size:12px}
.tag.ghost{background:#273046;color:#98a6c8}
.lang select{background:#11162b;color:var(--fg);border:1px solid var(--line);padding:6px;border-radius:8px}
.controls{padding:12px 16px;border-bottom:1px solid var(--line)}
.controls .row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:6px 0}
label{display:flex;gap:6px;align-items:center;background:var(--panel);padding:8px 10px;border:1px solid var(--line);border-radius:8px}
label input[type="file"],label input[type="number"],label select{background:#0d1324;color:var(--fg);border:1px solid var(--line);padding:6px;border-radius:6px}
label.onlyErr{margin-left:auto}
.presets{display:flex;gap:6px;align-items:center}
#runBtn{background:var(--accent2);color:white;border:0;border-radius:9px;padding:10px 14px;font-weight:700;cursor:pointer}
#runBtn:active{transform:translateY(1px)}
.spinner{width:22px;height:22px;border:3px solid #3b4667;border-top-color:#fff;border-radius:50%;animation:sp 0.8s linear infinite}
.spinner.hidden{display:none}
@keyframes sp{to{transform:rotate(1turn)}}

.work{display:grid;grid-template-columns:1.1fr 0.9fr;gap:16px;padding:16px}
.preview-wrap{position:relative;background:#0c1122;border:1px dashed var(--line);border-radius:10px;min-height:300px;display:flex;align-items:center;justify-content:center}
.preview-wrap img{max-width:100%;height:auto;display:block}
#roiCanvas{position:absolute;inset:0;z-index:5;pointer-events:auto}
.hint{position:absolute;left:12px;bottom:12px;background:rgba(0,0,0,.4);padding:6px 8px;border-radius:6px}
.muted{color:var(--muted)}

.results{display:flex;flex-direction:column;gap:12px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.panel-hd{padding:8px 10px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.list{list-style:none;margin:0;padding:6px 10px;max-height:280px;overflow:auto}
.list li{padding:6px 6px;border-bottom:1px dashed #2a3553}
.list li:last-child{border-bottom:0}
.bad{color:var(--bad)}
.ok{color:#6bff98}
.warn{color:var(--warn)}
.hints{padding:10px;color:var(--muted)}
.toggleOK{font-size:12px;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:10px 16px}