.controls label {
  cursor: pointer;
  padding: 4px 6px;
  margin: 2px 1px;
  border: 2px solid grey;
  border-radius: 6px;
  position: relative;
  width: fit-content;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  background-color: transparent;
}

.controls label:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Ensure initial checked state is styled */
.controls label input:checked {
  accent-color: inherit;
}

.controls label.checked {
  /* The background color will be set dynamically with JavaScript */
}

.controls label input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
}