:root {
  --bg: #0b1020; /* deep indigo */
  --panel: #121a33;
  --muted: #94a3b8;
  --text: #e2e8f0;
  --accent: #60a5fa;
  --ok: #10b981;
  --err: #ef4444;
  --warn: #f59e0b;
}
html, body { height: 100%; }
body {
  margin: 0; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% 0%, #0d173a 0%, var(--bg) 45%, #0b0f1c 100%);
  color: var(--text);
}
.wrap { max-width: 980px; margin: 44px auto; padding: 0 16px; }
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px; box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}
header { display:flex; gap:16px; align-items:center; justify-content:space-between; margin-bottom: 16px; }
h1 { font-size: clamp(20px, 3vw, 28px); margin: 0; letter-spacing: 0.2px; }
.sub { color: var(--muted); font-size: 14px; }
.controls { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 10px; padding: 16px; }
.controls > .field { grid-column: span 2; display:flex; flex-direction:column; gap:6px; }
.controls label { font-size: 12px; color: var(--muted); }
.controls input, .controls select, .controls button {
  background: var(--panel); color: var(--text);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px; padding: 10px 12px; outline: none;
}
.controls .field.wide { grid-column: span 4; }
.controls .field.narrow { grid-column: span 1; }
.btn {
  border: 1px solid rgba(255,255,255,0.1); background: var(--accent); color: #061221; font-weight: 600;
  border-radius: 12px; padding: 10px 14px; cursor: pointer; text-align:center; box-shadow: 0 6px 20px rgba(96,165,250,0.35); transition: transform .06s ease;
}
.btn:active { transform: scale(0.98); }
.btn.ghost { background: transparent; color: var(--text); border-color: rgba(255,255,255,0.18); box-shadow: none; }
.btn.toggle { background: transparent; color: var(--text); border-color: rgba(255,255,255,0.18); box-shadow: none; }
.btn.toggle.active { background: var(--accent); color: #061221; box-shadow: 0 6px 20px rgba(96,165,250,0.35); }
.row { display:flex; gap:10px; align-items:center; flex-wrap: wrap; }
.status { padding: 10px 14px; border-top: 1px solid rgba(255,255,255,0.08); display:flex; gap:12px; align-items:center; }
.dot { width:10px; height:10px; border-radius:50%; background: var(--muted); }
.dot.ok { background: var(--ok); }
.dot.err { background: var(--err); }
.dot.warn { background: var(--warn); }
.scroll { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
thead th { position: sticky; top: 0; background: #0f1833; font-weight: 600; border-bottom: 1px solid rgba(255,255,255,0.08); }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px dashed rgba(255,255,255,0.05); }
tbody tr:hover { background: rgba(255,255,255,0.03); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }
.pill { font-size: 12px; color: #061221; background: var(--accent); border-radius: 999px; padding: 2px 8px; font-weight: 700; }
.help { color: var(--muted); font-size: 12px; }
.footnote { color: var(--muted); font-size: 12px; padding: 12px 16px 18px; }
.chart-wrap { padding: 12px 16px 6px; position: relative; }
#chart { width: 100%; height: 260px; display:block; }
@media (max-width: 800px) {
  .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .controls .field { grid-column: span 2; }
}
.tooltip {
  position: absolute; pointer-events: none; transform: translate(-50%, -120%);
  background: rgba(18,26,51,0.95); color: var(--text); border: 1px solid rgba(255,255,255,0.15);
  padding: 6px 8px; border-radius: 10px; font-size: 12px; white-space: nowrap;
}