body {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: #14161a;
  color: #d7dae0;
}

header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 1rem;
  background: #1c1f26;
  border-bottom: 1px solid #2b303b;
  position: sticky;
  top: 0;
  z-index: 2;
}

h1 {
  font-size: 1rem;
  margin: 0;
}

.status {
  display: flex;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: #9aa4b2;
}

.controls {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

#speeds {
  display: flex;
  gap: 0.25rem;
}

button {
  background: #2b303b;
  color: #d7dae0;
  border: 1px solid #3b4252;
  border-radius: 4px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  font: inherit;
}

button:hover {
  background: #3b4252;
}

button.active {
  background: #B5522A;
  border-color: #d9a93f;
  color: #fff;
}

main {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  align-items: stretch;
}

.canvas-wrap {
  flex: 1;
  min-width: 0;
}

#stage {
  display: block;
  width: 100%;
  height: 74vh;
  min-height: 420px;
  background: #3f2e3a;
  border: 1px solid #2b303b;
  border-radius: 4px;
}

.legend {
  margin-top: 0.6rem;
  font-size: 0.72rem;
  color: #9aa4b2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.sw {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 2px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.2rem;
}

aside {
  width: 260px;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.panel {
  background: #1c1f26;
  border: 1px solid #2b303b;
  border-radius: 4px;
  padding: 0.6rem 0.8rem;
}

.panel h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #7f8b9c;
  margin: 0 0 0.5rem;
}

dl {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.3rem 0.6rem;
  font-size: 0.82rem;
}

dt {
  color: #9aa4b2;
}

dd {
  margin: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
}