html,
body {
  height: 100%;
  margin: 0;
}
body {
  background: #0e1118;
  color: #d8e2ff;
  font: 14px/1.45 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, sans-serif;
}
.wrap {
  display: grid;
  place-items: center;
  gap: 10px;
  height: 100%;
}
canvas {
  background: #cae7ff; /* ice base */
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  image-rendering: crisp-edges;
}
.hud {
  opacity: 0.95;
  text-align: center;
}
.hud kbd {
  background: #1f2940;
  border: 1px solid #31415f;
  border-bottom-color: #22304b;
  padding: 2px 6px;
  border-radius: 6px;
}
.toolbar {
  display: flex;
  gap: 8px;
  margin: 8px 0;
}
.toolbar button {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid #2a3757;
  background: #0b1426;
  color: #dfeaff;
  cursor: pointer;
}
.toolbar button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.toolbar button.armed {
  outline: 2px solid #6dc1ff;
}