:root {
  --bg: #e7e7e7;
  --panel: #fff;
  --line: #cfcfcf;
  --ink: #1c1c1c;
  --muted: #5e5e5e;
  --mark: #0b57d0;
  --font: "Segoe UI", sans-serif;
  --mono: Consolas, "Cascadia Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font: 13px/1.4 var(--font);
}

.bar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 40px;
  padding: 0 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex: none;
}

.brand {
  color: inherit;
  font-weight: 600;
  text-decoration: none;
}

.bar label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
}

select, .file {
  height: 26px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 0 6px;
}

.file { display: inline-flex; align-items: center; cursor: pointer; }
.file input { display: none; }

.bar a { color: var(--ink); text-decoration: none; }
.grow { flex: 1; }

.workspace {
  flex: 1;
  min-height: 0;
  display: flex;
}

.editor-pane {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--panel);
}

#editor { flex: 1; min-height: 0; }

.cm-editor { height: 100%; background: #fff; }
.cm-editor.cm-focused { outline: none; }
.cm-scroller {
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.5;
}
.cm-gutters {
  background: #f7f7f7;
  color: #8d8d8d;
  border-right: 1px solid #e6e6e6;
}
.cm-activeLine, .cm-activeLineGutter { background: #f3f6fb; }
.cm-activeLineGutter { color: #333; }
.cm-content { padding: 6px 0; caret-color: #111; }

.status {
  display: flex;
  gap: 16px;
  height: 26px;
  align-items: center;
  padding: 0 10px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #f7f7f7;
  flex: none;
}

.report {
  width: 420px;
  flex: none;
  background: var(--panel);
  border-left: 1px solid var(--line);
  overflow: auto;
}

.report h1 {
  margin: 0;
  padding: 14px 14px 0;
  font: 600 13px/1.2 var(--font);
}

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  padding: 12px 14px 8px;
}

.k {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.metrics strong {
  display: block;
  margin-top: 2px;
  font: 600 22px/1.2 var(--mono);
}

.meta {
  display: block;
  margin-top: 2px;
  color: var(--muted);
}

table {
  width: calc(100% - 16px);
  margin: 8px;
  border-collapse: collapse;
}

caption {
  caption-side: top;
  text-align: left;
  padding: 8px 6px;
  color: var(--muted);
}

th, td {
  padding: 5px 6px;
  border-bottom: 1px solid #ececec;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

td { font-family: var(--mono); font-size: 12px; }
td.why { font-family: var(--font); color: #333; }

tr.worst td:first-child { box-shadow: inset 3px 0 0 var(--mark); }

.note {
  margin: 8px 14px 16px;
  color: var(--muted);
}

.boot {
  margin: 0;
  padding: 8px 12px;
  background: #fff8d6;
  border-top: 1px solid #e3d48a;
}

@media (max-width: 860px) {
  .bar { height: auto; flex-wrap: wrap; padding: 8px 12px; }
  .workspace { flex-direction: column; }
  .editor-pane { min-height: 58vh; }
  .report { width: auto; border-left: 0; border-top: 1px solid var(--line); }
}