:root {
  --bg: #070c15;
  --panel: #0b1220;
  --line: #1b2740;
  --text: #e2e8f0;
  --muted: #7c8ba1;
  --accent: #38bdf8;
  --up: #16c784;
  --down: #ea3943;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  font-size: 13px;
  overflow: hidden;
}

body { display: flex; flex-direction: column; }

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 8px 14px;
  background: linear-gradient(180deg, #0d1729, #0a1220);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 8px; }
.brand h1 { font-size: 14px; font-weight: 600; margin: 0; letter-spacing: .2px; white-space: nowrap; }
.muted { color: var(--muted); font-weight: 400; }

.dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--up);
  box-shadow: 0 0 8px rgba(22, 199, 132, .8);
}
.dot.off { background: #64748b; box-shadow: none; }
.dot.warn { background: #f59e0b; box-shadow: 0 0 8px rgba(245, 158, 11, .7); }

.priceBox { display: flex; align-items: baseline; gap: 10px; min-width: 170px; }
.price {
  font: 600 22px/1 ui-monospace, "Cascadia Mono", Consolas, monospace;
  color: #f8fafc;
  font-variant-numeric: tabular-nums;
}
.sub { color: var(--muted); font-size: 11px; }

.controls { display: flex; align-items: flex-end; gap: 10px; margin-left: auto; flex-wrap: wrap; }
.controls label {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 9.5px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted);
}
.controls select, .controls input {
  background: #0f1a2e;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 4px 6px;
  font-size: 12px;
  font-family: inherit;
  min-width: 96px;
  outline: none;
}
.controls input { width: 84px; font-family: ui-monospace, Consolas, monospace; }
.controls select:focus, .controls input:focus { border-color: #2f4a72; }
.controls button {
  background: #17233a;
  color: #cbd5e1;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 5px 10px;
  font-size: 11.5px;
  cursor: pointer;
}
.controls button:hover { border-color: #2f4a72; color: #fff; }

/* ---------- status bar ---------- */
.statusbar {
  display: flex;
  gap: 14px;
  padding: 4px 14px;
  font-size: 11px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  background: #080f1b;
  flex-wrap: wrap;
}
.statusbar #srcLabel { color: #9fb0c6; }
.err { color: #f87171; }
.hidden { display: none !important; }

/* ---------- 3 panes ---------- */
main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px;
}

.panel {
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.grow-candles { flex: 1.5 1 0; }
.grow-mid { flex: 1 1 0; }

.panelHead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 4px 10px;
  border-bottom: 1px solid var(--line);
  background: #0c1524;
  flex-wrap: wrap;
  min-height: 26px;
}
.panelHead h2 { font-size: 11.5px; margin: 0; font-weight: 600; display: flex; align-items: center; gap: 7px; }
.chip {
  font: 500 10px ui-monospace, Consolas, monospace;
  color: var(--accent);
  background: rgba(56, 189, 248, .1);
  border: 1px solid rgba(56, 189, 248, .25);
  padding: 0 5px;
  border-radius: 999px;
  white-space: nowrap;
}
.panelMeta { font-size: 10.5px; color: var(--muted); font-variant-numeric: tabular-nums; }

.canvasWrap { position: relative; flex: 1; min-height: 0; }
canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 5px 14px;
  font-size: 10.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #080f1b;
  flex-wrap: wrap;
}
footer .hint { color: #4d5f78; }