:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --ink: #1b2430;
  --muted: #5d6b7a;
  --line: #dde3ea;
  --accent: #1f4e79;
  --accent-ink: #ffffff;
  --high: #c0392b;
  --high-bg: #fdecea;
  --med: #9a6700;
  --med-bg: #fff4d6;
  --low: #2e7d32;
  --low-bg: #e8f5e9;
  --info-bg: #eef1f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161c; --panel: #1a222b; --ink: #e6ebf0; --muted: #9aa7b4; --line: #2c3742;
    --accent: #5b9bd5; --accent-ink: #0b1118;
    --high-bg: #3b1d1a; --med-bg: #3a2f12; --low-bg: #16301a; --info-bg: #222b35;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.topbar { background: var(--accent); color: var(--accent-ink); padding: 18px 0; margin-bottom: 20px; }
.topbar h1 { margin: 0; font-size: 22px; }
.topbar p { margin: 4px 0 0; opacity: .9; }
h2 { font-size: 19px; margin: 0 0 12px; }
h3 { font-size: 16px; margin: 0 0 10px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .grid2 { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.field input[type=text], .field input[type=file], select, input[type=search] {
  padding: 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--ink); max-width: 100%; }
small, .small { font-size: 12.5px; }
.muted { color: var(--muted); }
.btn { display: inline-block; padding: 8px 14px; border-radius: 6px; border: 1px solid var(--line);
  background: var(--panel); color: var(--ink); cursor: pointer; text-decoration: none; font-size: 14px; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn:disabled { opacity: .6; cursor: wait; }
.hidden { display: none !important; }
.progress { display: flex; gap: 12px; align-items: center; margin-top: 12px; }
.progress small { display: block; color: var(--muted); }
.spinner { width: 26px; height: 26px; border: 3px solid var(--line); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 1s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.alert { border-radius: 8px; padding: 10px 12px; margin: 12px 0; }
.alert.error { background: var(--high-bg); color: var(--high); }
.alert.warn { background: var(--med-bg); }
.results-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin: 12px 0 16px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.kpi .label { color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .02em; }
.kpi .value { font-size: 22px; font-weight: 600; margin-top: 2px; }
.kpi .sub { color: var(--muted); font-size: 12.5px; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.tab { border: none; background: none; padding: 9px 12px; cursor: pointer; color: var(--muted); font-size: 14px;
  border-bottom: 2px solid transparent; }
.tab.active { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.tabpane { display: none; }
.tabpane.active { display: block; }
.pill { background: var(--high-bg); color: var(--high); border-radius: 10px; padding: 0 7px; font-size: 12px; }
.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.tbl th, .tbl td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { color: var(--muted); font-weight: 600; }
.tbl td.num, .tbl th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl.hover tr.item { cursor: pointer; }
.tbl.hover tr.item:hover { background: var(--info-bg); }
.tbl tr.detail td { background: var(--info-bg); color: var(--muted); font-size: 12.5px; }
.tbl tr.group td { font-weight: 600; background: var(--bg); }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.issue { border-left: 4px solid var(--line); background: var(--info-bg); border-radius: 6px; padding: 8px 10px; margin-bottom: 8px; }
.issue.HIGH { border-color: var(--high); background: var(--high-bg); }
.issue.MEDIUM { border-color: var(--med); background: var(--med-bg); }
.issue.LOW { border-color: var(--low); background: var(--low-bg); }
.issue .sev { font-weight: 700; font-size: 12px; margin-right: 6px; }
.issue .impact { display: block; color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.overlays { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 12px; }
.overlays figure { margin: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #fff; }
.overlays img { width: 100%; display: block; cursor: zoom-in; }
.overlays figcaption { padding: 6px 8px; font-size: 13px; color: #333; background: #f2f4f7; }
.settings { display: grid; grid-template-columns: 1fr 120px; gap: 6px 10px; align-items: center; margin-bottom: 12px; }
.settings label { font-size: 13px; }
.settings input { padding: 5px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); color: var(--ink); width: 100%; }
.badge-src { display: inline-block; border-radius: 6px; padding: 4px 10px; font-size: 13px; }
.badge-src.ai { background: var(--low-bg); color: var(--low); }
.badge-src.engine { background: var(--info-bg); color: var(--muted); }
.tbl tr.cmp.agree td:last-child { color: var(--low); font-weight: 600; }
.tbl tr.cmp.differ td { background: var(--high-bg); }
.tbl tr.cmp.ai_only td:last-child, .tbl tr.cmp.engine_only td:last-child { color: var(--med); }
.pass { border-left: 3px solid var(--low); padding: 6px 10px; margin-bottom: 8px; background: var(--info-bg); border-radius: 6px; }
.pass.failed { border-left-color: var(--high); }
.list { padding-left: 18px; margin: 0; }
.list li { margin-bottom: 6px; }
footer { padding: 24px 16px 40px; }