:root {
  --bg: #0b0f17;
  --panel: #131927;
  --panel-2: #1a2236;
  --border: #232c44;
  --text: #e6ebf5;
  --muted: #8a93a8;
  --accent: #4ade80;
  --accent-2: #60a5fa;
  --danger: #f87171;
  --warn: #fbbf24;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  padding: 24px 32px 8px;
  border-bottom: 1px solid var(--border);
}
header h1 { margin: 0; font-size: 20px; letter-spacing: 0.3px; }
header .tag { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
  padding: 24px 32px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}
.panel h2 {
  margin: 0 0 16px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
}

.row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  align-items: end;
  flex-wrap: wrap;
}
.row label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  flex: 1 1 120px;
}
.row .muted { color: var(--muted); font-weight: 400; }

input, select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
  font-size: 13px;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent-2); }

button {
  background: var(--accent);
  color: #07110a;
  border: 0;
  border-radius: 6px;
  padding: 9px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.05); }
button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
button:disabled { opacity: 0.6; cursor: not-allowed; }

.actions { justify-content: space-between; }
.status { color: var(--muted); font-size: 12px; }
.status.error { color: var(--danger); }
.status.ok { color: var(--accent); }

.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.kpi {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}
.kpi .label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.kpi .value { font-size: 16px; font-weight: 600; margin-top: 4px; }
.kpi .sub { font-size: 11px; color: var(--muted); margin-top: 2px; }
.kpi.pos .value { color: var(--accent); }
.kpi.neg .value { color: var(--danger); }

canvas {
  width: 100%;
  height: auto;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}

details {
  margin-top: 16px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}
details summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
  user-select: none;
}

.table-wrap {
  max-height: 320px;
  overflow: auto;
  margin-top: 10px;
}

table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--muted); font-weight: 500; position: sticky; top: 0; background: var(--panel-2); }
.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.buy td.type-cell { color: var(--accent-2); }
tr.sell td.type-cell { color: var(--accent); }
tr.init_buy td.type-cell, tr.liquidate td.type-cell { color: var(--warn); }

footer {
  padding: 16px 32px;
  color: var(--muted);
  font-size: 12px;
  border-top: 1px solid var(--border);
}

/* Paper trading panel spans both columns at the bottom. */
#paper-panel { grid-column: 1 / -1; }
#paper-panel h2 .small { font-size: 11px; text-transform: none; letter-spacing: 0; margin-left: 8px; }
#paper-panel .hint { color: var(--muted); font-size: 12px; margin: 0 0 12px; }
#paper-panel .hint em { color: var(--text); font-style: normal; font-weight: 600; }

.paper-source-row { display: inline-flex; align-items: center; gap: 8px; padding: 8px 0; font-size: 12px; }
.paper-source-row .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0);
}
.paper-source-row .dot.live {
  background: var(--accent);
  animation: pulse 1.5s infinite;
}
.paper-source-row .dot.error { background: var(--danger); }

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6); }
  70%  { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

.paper-errors { margin-top: 10px; font-size: 12px; color: var(--danger); }
.paper-errors div { padding: 4px 0; }

@media (max-width: 980px) {
  main { grid-template-columns: 1fr; }
}