:is(form, .markup) input[type="checkbox"] {
  appearance: none;
  position: relative;
  border: 1px solid var(--color-secondary-dark-4);
  border-radius: var(--border-radius);
  background: var(--color-input-background);
  height: var(--checkbox-size);
  width: var(--checkbox-size);
  opacity: 1 !important; /* override fomantic on edit preview */
  pointer-events: auto !important; /* override fomantic on edit preview */
  print-color-adjust: exact;
  margin-block-start: 0 !important; /* override form.css rule applying to all inputs */
  margin-inline-end: 0.5rem;

  &:not([disabled]):hover,
  &:not([disabled]):active {
    border-color: var(--color-primary);
  }

  &::after {
    position: absolute;
    inset: 0;
    pointer-events: none;
    mask-size: cover;
  }

  &:checked::after {
    content: "";
    mask-image: var(--checkbox-mask-checked);
    print-color-adjust: exact;
  }

  &:indeterminate::after {
    content: "";
    mask-image: var(--checkbox-mask-indeterminate);
  }
}

form input[type="checkbox"] {
  vertical-align: center !important; /* override fomantic */

  &:checked {
    background: var(--color-accent);
    border: none;

    &::after {
      background: var(--color-white);
    }
  }
}

.markup input[type="checkbox"] {
  vertical-align: middle !important; /* override fomantic on edit preview */

  &:checked::after {
    background: var(--color-text);
  }
}

/* Legacy part based on Fomantic UI checkbox module, with just the parts extracted that we use.
   If you find any unused rules here after refactoring, please remove them. */

input[type="radio"] {
  width: var(--checkbox-size);
  height: var(--checkbox-size);
}

.ui.checkbox {
  position: relative;
  display: inline-block;
  vertical-align: baseline;
  min-height: var(--checkbox-size);
  line-height: var(--checkbox-size);
  min-width: var(--checkbox-size);
  padding: 1px;
}

.ui.checkbox input[type="checkbox"],
.ui.checkbox input[type="radio"] {
  position: absolute;
  top: 1px;
  inset-inline-start: 0;
  width: var(--checkbox-size);
  height: var(--checkbox-size);
}

.ui.checkbox input[type="checkbox"]:enabled,
.ui.checkbox input[type="radio"]:enabled,
.ui.checkbox label:enabled {
  cursor: pointer;
}

.ui.checkbox label {
  cursor: auto;
  position: relative;
  display: block;
  user-select: none;
}

.ui.checkbox label,
.ui.radio.checkbox label {
  margin-inline-start: 1.85714em;
}

.ui.checkbox + label {
  vertical-align: middle;
}

.ui.disabled.checkbox label,
.ui.checkbox input[disabled] ~ label {
  cursor: default !important;
  opacity: 0.5;
  pointer-events: none;
}

.ui.radio.checkbox {
  min-height: var(--checkbox-size);
}

/* "switch" styled checkbox */

.ui.toggle.checkbox {
  min-height: 1.5rem;
}
.ui.toggle.checkbox input {
  width: 3.5rem;
  height: 21px;
  opacity: 0;
  z-index: 3;
}
.ui.toggle.checkbox label {
  min-height: 1.5rem;
  padding-inline-start: 4.5rem;
  padding-top: 0.15em;
}
.ui.toggle.checkbox label::before {
  display: block;
  position: absolute;
  content: "";
  z-index: 1;
  top: 0;
  width: 49px;
  height: 21px;
  border-radius: 500rem;
  inset-inline-start: 0;
}
.ui.toggle.checkbox label::after {
  background: var(--color-white);
  box-shadow: 1px 1px 4px 1px var(--color-shadow);
  position: absolute;
  content: "";
  opacity: 1;
  z-index: 2;
  width: 18px;
  height: 18px;
  top: 1.5px;
  inset-inline-start: 1.5px;
  border-radius: 500rem;
  transition: background 0.3s ease, left 0.3s ease;
}
.ui.toggle.checkbox input ~ label::after {
  inset-inline-start: 1.5px;
}
.ui.toggle.checkbox input:checked ~ label::after {
  inset-inline-start: 29px;
}
.ui.toggle.checkbox input:focus ~ label::before,
.ui.toggle.checkbox label::before {
  background: var(--color-input-toggle-background);
}
.ui.toggle.checkbox label,
.ui.toggle.checkbox input:checked ~ label,
.ui.toggle.checkbox input:focus:checked ~ label {
  color: var(--color-text) !important;
}
.ui.toggle.checkbox input:checked ~ label::before,
.ui.toggle.checkbox input:focus:checked ~ label::before {
  background: var(--color-primary) !important;
}