:root {
  --bg: #0f1216;
  --panel: #171b22;
  --text: #e8eaed;
  --muted: #8b929a;
  --border: #2a313c;
  --green: #3fb950;
  --red: #f85149;
  --accent: #58a6ff;
}
* { box-sizing: border-box; }
body {
  font-family: ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 0;
  font-size: 14px;
  line-height: 1.45;
}
a { color: var(--accent); }
.top-nav {
  display: flex;
  gap: 4px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: #12161c;
  flex-wrap: wrap;
}
.top-nav a {
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--muted);
}
.top-nav a.active { background: var(--panel); color: var(--text); border: 1px solid var(--border); }
.page { max-width: 1200px; margin: 0 auto; padding: 16px 20px 40px; }
.page.hidden { display: none; }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 14px; }
button, .btn {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
}
button:hover { border-color: var(--accent); }
button.danger { border-color: var(--red); color: var(--red); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
}
.card-head {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.card-body { padding: 10px 12px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.form-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 8px; }
.form-row input, .form-row select, .form-row textarea {
  background: #0d1117;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 13px;
}
.form-row input { min-width: 100px; }
.rule-tip { font-size: 12px; color: var(--muted); margin: 8px 0; line-height: 1.5; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { padding: 6px 8px; border-top: 1px solid var(--border); text-align: left; }
th { color: var(--muted); }
.pnl-pos { color: var(--green); }
.pnl-neg { color: var(--red); }
.err { color: var(--red); }
.badge { font-size: 11px; padding: 2px 6px; border-radius: 4px; background: #1f3a5a; color: #8fc8ff; }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.tabs button.active { border-color: var(--accent); color: var(--accent); }
#toast {
  position: fixed; bottom: 16px; right: 16px;
  max-width: min(480px, 90vw);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 8px;
  display: none;
  z-index: 30;
  white-space: pre-wrap;
}
#toast.show { display: block; }
.settings-table input { width: 100%; min-width: 80px; }
.chk-row { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; }