:root {
  --bg: #0e1117;
  --panel: #12161f;
  --border: #232936;
  --text: #d5dae2;
  --text-dim: #8b94a3;
  --accent: #f0b90b;
  --up: #26a69a;
  --down: #ef5350;
  --blue: #4a90e2;
  --violet: #8b7cff;
  --cyan: #00e0ff;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 13px/1.5 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  display: flex; flex-direction: column;
}

header {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 8px 14px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 20;
}
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.brand { font-size: 15px; font-weight: 600; letter-spacing: .3px; }
.spacer { flex: 1; }
.hint { color: var(--text-dim); font-size: 11px; }
.v-sep { width: 1px; height: 18px; background: var(--border); }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.seg button {
  background: transparent; color: var(--text-dim); border: none;
  padding: 5px 12px; cursor: pointer; font-size: 12px; font-weight: 600;
}
.seg button + button { border-left: 1px solid var(--border); }
.seg button.active { background: #1d2432; color: var(--text); }
.seg button:hover { color: var(--text); }
.asset-tabs button.active { color: var(--accent); }

select {
  background: #1a1f2b; color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 4px 8px; font-size: 12px;
}
label { color: var(--text-dim); font-size: 12px; display: inline-flex; align-items: center; gap: 6px; }
.chk input { accent-color: var(--accent); }
.chk { cursor: pointer; user-select: none; }

.btn {
  background: #1a1f2b; color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 14px; cursor: pointer; font-size: 12px; font-weight: 600;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.accent { background: var(--accent); color: #14181f; border-color: var(--accent); }
.btn.accent:hover { filter: brightness(1.08); color: #14181f; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.badge {
  font-size: 10px; padding: 1px 7px; border-radius: 9px; vertical-align: 2px; font-weight: 700;
}
.badge.warn { background: rgba(240,185,11,.15); color: var(--accent); border: 1px solid rgba(240,185,11,.4); }
.badge.ok { background: rgba(38,166,154,.15); color: var(--up); border: 1px solid rgba(38,166,154,.4); }
.badge.err { background: rgba(239,83,80,.15); color: var(--down); border: 1px solid rgba(239,83,80,.4); }
.hidden { display: none !important; }

.status-pill {
  color: var(--text-dim); font-size: 11px; border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 12px; max-width: 46vw; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}

main { flex: 1; display: flex; flex-direction: column; min-height: 0; position: relative; }
.pane { position: relative; min-height: 0; }
#kline-pane { flex: 0 0 58%; border-bottom: 1px solid var(--border); }
#pcr-pane { flex: 1; }
.chart-wrap { position: absolute; inset: 0; }
.chart { position: absolute; inset: 0; }
.chart-wrap canvas.overlay, .chart-wrap > canvas {
  position: absolute; inset: 0; pointer-events: none; z-index: 5;
}

.legend {
  position: absolute; top: 6px; left: 8px; z-index: 6;
  font: 11px/1.7 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--text); background: rgba(14,17,23,.72);
  padding: 4px 9px; border-radius: 6px; pointer-events: none;
  max-width: calc(100% - 90px);
}
.legend .dim { color: var(--text-dim); }
.legend .up { color: var(--up); }
.legend .down { color: var(--down); }
.legend .accent { color: var(--accent); }
.legend .blue { color: var(--blue); }
.legend .violet { color: var(--violet); }

.tooltip {
  position: absolute; z-index: 30; pointer-events: none;
  background: rgba(18,22,31,.95); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 11px;
  font: 11px/1.8 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  box-shadow: 0 6px 24px rgba(0,0,0,.45);
  white-space: nowrap;
}
.tooltip .t { color: var(--text-dim); margin-bottom: 2px; }
.tooltip .k { color: var(--text-dim); display: inline-block; width: 86px; }

.empty {
  position: absolute; inset: 0; z-index: 25;
  display: flex; align-items: center; justify-content: center;
  background: rgba(14,17,23,.88); text-align: center; color: var(--text-dim);
}
.empty button { margin-top: 10px; }

.toast {
  position: absolute; right: 16px; bottom: 16px; z-index: 40;
  background: #1a2130; border: 1px solid var(--border); color: var(--text);
  padding: 9px 14px; border-radius: 8px; font-size: 12px; max-width: 420px;
  box-shadow: 0 6px 24px rgba(0,0,0,.5);
}
.toast.err { border-color: rgba(239,83,80,.5); color: #ffb4b2; }

footer {
  border-top: 1px solid var(--border); background: var(--panel);
  color: var(--text-dim); font-size: 10.5px; padding: 5px 14px;
}
.legend-swatch {
  display: inline-block; width: 18px; height: 8px; border-radius: 2px;
  background: rgba(240,185,11,.22); border: 1px solid rgba(240,185,11,.5); vertical-align: -1px;
}
.vline-swatch {
  display: inline-block; width: 1px; height: 9px; background: var(--blue); vertical-align: -1px;
}

@media (max-width: 900px) {
  .hint { display: none; }
  #kline-pane { flex: 0 0 50%; }
}