:root {
  --bg: #0f1420;
  --panel: #171e2e;
  --border: #2a3348;
  --text: #e6e9f0;
  --muted: #93a0b8;
  --accent: #4f8cff;
  --green: #34c78d;
  --red: #ef5b6a;
  --amber: #e0a940;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Noto Sans Thai", Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 18px; margin: 0; }
.conn-status { font-size: 12px; color: var(--amber); padding: 4px 10px; border: 1px solid var(--border); border-radius: 999px; }
.conn-status.ok { color: var(--green); }
.tabs { display: flex; gap: 4px; padding: 8px 12px; overflow-x: auto; border-bottom: 1px solid var(--border); }
.tab-btn {
  background: none; border: none; color: var(--muted); padding: 8px 14px;
  border-radius: 8px; cursor: pointer; font-size: 14px; white-space: nowrap;
}
.tab-btn.active { background: var(--accent); color: white; }
main { padding: 16px; max-width: 1000px; margin: 0 auto; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px; margin-bottom: 16px;
}
.panel h3 { margin-top: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px,1fr)); gap: 10px; margin-bottom: 16px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.card .label { font-size: 12px; color: var(--muted); }
.card .value { font-size: 22px; font-weight: 700; margin-top: 4px; }
.card .value.good { color: var(--green); }
.card .value.bad { color: var(--red); }
.grid2 { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 800px) { .grid2 { grid-template-columns: 1.3fr 1fr; } }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.form-grid label.full { grid-column: 1 / -1; }
.form-grid input, .form-grid select, .form-grid textarea {
  background: #0f1420; border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 8px 10px; font-size: 14px;
}
.btn {
  background: #232c42; color: var(--text); border: 1px solid var(--border);
  padding: 10px 16px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
.btn.danger { background: var(--red); border-color: var(--red); color: white; }
.btn.small { padding: 6px 10px; font-size: 12px; }
.calc-preview {
  grid-column: 1 / -1; background: #0f1420; border: 1px dashed var(--border);
  border-radius: 8px; padding: 10px; font-size: 13px; color: var(--muted); white-space: pre-line;
}
.checklist { grid-column: 1 / -1; border: 1px solid var(--border); border-radius: 8px; padding: 10px; }
.checklist legend { font-size: 12px; color: var(--muted); padding: 0 6px; }
#checklistBox label { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; margin-bottom: 8px; color: var(--text); }
.hint { font-size: 12px; color: var(--muted); }
table.trade-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.trade-table th, table.trade-table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); }
.pos-card { border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin-bottom: 10px; }
.pos-card .row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 13px; }
.badge { padding: 2px 8px; border-radius: 999px; font-size: 11px; }
.badge.ok { background: rgba(52,199,141,0.15); color: var(--green); }
.badge.warn { background: rgba(224,169,64,0.15); color: var(--amber); }
.badge.danger { background: rgba(239,91,106,0.15); color: var(--red); }
.rbaf-row { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.rbaf-row label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 4px; }
.rbaf-result { margin-top: 10px; font-size: 14px; }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: #232c42; border: 1px solid var(--border); padding: 10px 16px; border-radius: 8px;
  opacity: 0; transition: all .25s; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }