/* Backtesting Lab — dark quant workspace (product theme skin) */
:root {
  --bl-bg: #060a12;
  --bl-panel: #0b1220;
  --bl-panel2: #111b2e;
  --bl-line: rgba(255,255,255,.08);
  --bl-text: rgba(255,255,255,.92);
  --bl-muted: rgba(255,255,255,.5);
  --bl-accent: #14b8a6;
  --bl-blue: #3b82f6;
  --bl-warn: #f59e0b;
  --bl-bad: #ef4444;
  --bl-good: #22c55e;
  --bl-mono: "IBM Plex Mono", SFMono-Regular, Consolas, monospace;
  --bl-sans: "IBM Plex Sans", "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html, body.bl-app { height: 100%; margin: 0; overflow: hidden; }
body.bl-app {
  background: var(--bl-bg);
  color: var(--bl-text);
  font-family: var(--bl-sans);
  font-size: 13px;
  display: flex;
  flex-direction: column;
}
.bl-top {
  height: 48px; display: flex; align-items: center; gap: 1rem;
  padding: 0 1rem; background: var(--bl-panel); border-bottom: 1px solid var(--bl-line);
}
.bl-brand { font-weight: 800; letter-spacing: -.02em; text-decoration: none; color: var(--bl-text); }
.bl-brand span { color: var(--bl-accent); }
.bl-tabs { display: flex; gap: .25rem; }
.bl-tabs button {
  background: transparent; border: 0; color: var(--bl-muted); padding: .45rem .8rem;
  border-radius: 6px; cursor: pointer; font: inherit;
}
.bl-tabs button.active, .bl-tabs button:hover { color: var(--bl-text); background: var(--bl-panel2); }
.bl-top-actions { margin-inline-start: auto; display: flex; gap: .5rem; align-items: center; }
.bl-btn {
  border: 1px solid var(--bl-line); background: var(--bl-panel2); color: var(--bl-text);
  border-radius: 6px; padding: .4rem .75rem; cursor: pointer; font: inherit;
}
.bl-btn:hover { border-color: var(--bl-blue); }
.bl-btn-primary { background: var(--bl-blue); border-color: var(--bl-blue); color: #fff; }
.bl-btn-accent { background: var(--bl-accent); border-color: var(--bl-accent); color: #042f2e; font-weight: 700; }
.bl-layout { flex: 1; display: grid; grid-template-columns: 220px 1fr 320px; min-height: 0; }
.bl-files, .bl-config { background: var(--bl-panel); border-inline-end: 1px solid var(--bl-line); overflow: auto; padding: .75rem; }
.bl-config { border-inline-end: 0; border-inline-start: 1px solid var(--bl-line); }
.bl-main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.bl-section-label {
  font-size: .65rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--bl-muted); margin: .5rem 0 .4rem;
}
.bl-file {
  display: block; width: 100%; text-align: left; background: transparent; border: 0;
  color: var(--bl-muted); padding: .35rem .5rem; border-radius: 4px; cursor: pointer; font-family: var(--bl-mono); font-size: 12px;
}
.bl-file.active, .bl-file:hover { background: var(--bl-panel2); color: var(--bl-text); }
.bl-editor-bar {
  display: flex; align-items: center; gap: .5rem; padding: .4rem .75rem;
  border-bottom: 1px solid var(--bl-line); background: var(--bl-panel);
}
.bl-editor-bar .path { font-family: var(--bl-mono); color: var(--bl-muted); margin-inline-start: auto; }
#monacoHost { flex: 1; min-height: 0; }
.bl-bottom {
  height: 220px; border-top: 1px solid var(--bl-line); display: flex; flex-direction: column; background: var(--bl-panel);
}
.bl-log-tabs { display: flex; gap: .25rem; padding: .35rem .5rem; border-bottom: 1px solid var(--bl-line); }
.bl-log-tabs button {
  background: transparent; border: 0; color: var(--bl-muted); padding: .3rem .6rem; cursor: pointer; font: inherit; border-radius: 4px;
}
.bl-log-tabs button.active { color: var(--bl-text); background: var(--bl-panel2); }
#logPane {
  flex: 1; overflow: auto; padding: .5rem .75rem; font-family: var(--bl-mono); font-size: 12px;
  white-space: pre-wrap; color: var(--bl-muted);
}
.bl-field { margin-bottom: .65rem; }
.bl-field label { display: block; font-size: .7rem; color: var(--bl-muted); margin-bottom: .25rem; }
.bl-field input, .bl-field select, .bl-field textarea {
  width: 100%; background: var(--bl-bg); border: 1px solid var(--bl-line); color: var(--bl-text);
  border-radius: 6px; padding: .4rem .5rem; font: inherit;
}
.bl-results { display: none; flex-direction: column; flex: 1; min-height: 0; }
.bl-results.active { display: flex; }
.bl-kpi-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: .5rem; padding: .75rem; flex-shrink: 0; }
.bl-kpi { background: var(--bl-panel); border: 1px solid var(--bl-line); border-radius: 8px; padding: .6rem .75rem; }
.bl-kpi .k { font-size: .65rem; color: var(--bl-muted); text-transform: uppercase; letter-spacing: .06em; }
.bl-kpi .v { font-size: 1.15rem; font-weight: 700; margin-top: .15rem; }
.bl-results-scroll { flex: 1; min-height: 0; overflow: auto; padding: 0 .75rem .75rem; }
.bl-charts { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-bottom: .75rem; }
.bl-chart-card, .bl-panel-card {
  background: var(--bl-panel); border: 1px solid var(--bl-line); border-radius: 8px; padding: .5rem; min-height: 180px;
}
.bl-chart-card { height: 220px; position: relative; }
.bl-chart-card canvas { max-height: 180px; }
.bl-chart-title { font-size: .7rem; color: var(--bl-muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .35rem; }
.bl-panels { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.bl-pre {
  margin: 0; padding: .5rem; font-family: var(--bl-mono); font-size: 11px; color: var(--bl-muted);
  white-space: pre-wrap; max-height: 220px; overflow: auto;
}
.bl-view { display: none; flex: 1; flex-direction: column; min-height: 0; }
.bl-view.active { display: flex; }
.bl-table { width: 100%; border-collapse: collapse; }
.bl-table th, .bl-table td { border-bottom: 1px solid var(--bl-line); padding: .4rem .5rem; text-align: left; }
.bl-table th { color: var(--bl-muted); font-size: .7rem; text-transform: uppercase; }
.bl-empty { color: var(--bl-muted); padding: 2rem; text-align: center; }
.bl-pill { display: inline-block; padding: .1rem .4rem; border-radius: 999px; font-size: .65rem; background: rgba(20,184,166,.15); color: var(--bl-accent); }
@media (max-width: 1100px) {
  .bl-layout { grid-template-columns: 180px 1fr; }
  .bl-config { display: none; }
  .bl-kpi-row { grid-template-columns: repeat(3, 1fr); }
  .bl-charts, .bl-panels { grid-template-columns: 1fr; }
}