#hint {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  text-align: center;
  max-width: calc(100% - 32px);
  font-size: 14px;
  pointer-events: none;
}
#hint:empty {
  display: none;
}
/* Stamina: a thin bar under the worker's feet (placed from main.js). */
#stamina {
  position: absolute;
  width: 64px;
  height: 7px;
  transform: translateX(-50%);
  background: #0006;
  border-radius: 4px;
  overflow: hidden;
  pointer-events: none;
}
#stamina i {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--paper);
  border-radius: 4px;
}
#stamina.fed i {
  background: var(--yellow);
}
#stamina.tired i {
  background: var(--red);
}