.rb-checkbox {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  --rb-checkbox-color: #007bff;
  gap: 0.5em;
}

.rb-checkbox-input {
  display: none;
}

.rb-checkbox-custom {
  width: 18px;
  height: 18px;
  border: 2px solid var(--rb-checkbox-color, #007bff);
  border-radius: 4px;
  background: #fff;
  position: relative;
  transition: border 0.2s, background 0.2s;
  box-sizing: border-box;
}

.rb-checkbox-input:checked + .rb-checkbox-custom {
  background: var(--rb-checkbox-color, #007bff);
  border-color: var(--rb-checkbox-color, #007bff);
}

.rb-checkbox-input:checked + .rb-checkbox-custom::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 0px;
  width: 6px;
  height: 12px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  display: block;
}

.rb-checkbox-input:disabled + .rb-checkbox-custom {
  opacity: 0.6;
  cursor: not-allowed;
}

.rb-checkbox-label {
  user-select: none;
  font-size: 1rem;
}