:root {
  --ahc-ink: #f3f4f7;
  --ahc-muted: #8ba3c0;
  --ahc-line: #1e3f66;
  --ahc-fill: #0b2344;
  --ahc-surface: #071833;
  --ahc-shadow: 0 1px 2px rgba(18, 20, 26, 0.04), 0 8px 24px rgba(18, 20, 26, 0.06);
  --ahc-radius: 12px;
  --ahc-font: "Segoe UI", "PingFang TC", "Noto Sans TC", "Helvetica Neue", sans-serif;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--ahc-surface);
  overflow: hidden;
  font-family: var(--ahc-font);
  color: var(--ahc-ink);
}

#synorlab-heatmap {
  width: 100%;
  height: 100%;
  background: var(--ahc-surface);
}

.ahc-loader {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--ahc-surface);
  color: var(--ahc-muted);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.ahc-loader::before {
  content: "";
  width: 28px;
  height: 28px;
  border: 2px solid var(--ahc-line);
  border-top-color: var(--ahc-ink);
  border-radius: 50%;
  animation: ahc-spin 0.8s linear infinite;
}

@keyframes ahc-spin {
  to {
    transform: rotate(360deg);
  }
}

flt-glass-pane,
flutter-view {
  background: transparent;
}