Multi-Tag Filter

<!-- Multi-Tag Filter — checkboxes AND-filter the list via :has(), zero JS -->
<div class="nuda-co2-tag-filter">
  <input class="nuda-co2-tag-filter__input" type="checkbox" id="co2-tf-remote" />
  <input class="nuda-co2-tag-filter__input" type="checkbox" id="co2-tf-senior" />

  <div class="nuda-co2-tag-filter__bar">
    <label class="nuda-co2-tag-filter__chip" for="co2-tf-remote">Remote</label>
    <label class="nuda-co2-tag-filter__chip" for="co2-tf-senior">Senior</label>
  </div>

  <ul class="nuda-co2-tag-filter__list">
    <li class="nuda-co2-tag-filter__card" data-remote data-senior>
      Staff Engineer<span class="nuda-co2-tag-filter__tags">Remote · Senior</span>
    </li>
    <li class="nuda-co2-tag-filter__card" data-remote>
      Support Specialist<span class="nuda-co2-tag-filter__tags">Remote</span>
    </li>
    <li class="nuda-co2-tag-filter__card" data-senior>
      Engineering Manager<span class="nuda-co2-tag-filter__tags">Senior</span>
    </li>
    <li class="nuda-co2-tag-filter__card">
      Junior Designer<span class="nuda-co2-tag-filter__tags">On-site</span>
    </li>
  </ul>
</div>

.nuda-co2-tag-filter {
  --nuda-co2-tf-accent: #e4ff54;
  width: 100%;
  max-width: 300px;
  font-family: inherit;
}

.nuda-co2-tag-filter__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

.nuda-co2-tag-filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 .6rem;
  padding: 0;
  list-style: none;
}

.nuda-co2-tag-filter__chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: .35rem .8rem;
  font-size: .7rem;
  font-weight: 600;
  color: #aaa;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  cursor: pointer;
  transition: color .2s ease,background .2s ease,border-color .2s ease;
}

.nuda-co2-tag-filter__chip:hover {
  color: #eee;
}

.nuda-co2-tag-filter__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nuda-co2-tag-filter__card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: .5rem .7rem;
  font-size: .74rem;
  color: #ddd;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 9px;
  transition: opacity .2s ease,transform .2s ease;
}

.nuda-co2-tag-filter__tags {
  font-size: .62rem;
  color: #888;
}

#co2-tf-remote:checked~.nuda-co2-tag-filter__bar label[for=co2-tf-remote], #co2-tf-senior:checked~.nuda-co2-tag-filter__bar label[for=co2-tf-senior] {
  color: #09090b;
  background: var(--nuda-co2-tf-accent);
  border-color: var(--nuda-co2-tf-accent);
}

.nuda-co2-tag-filter__input:focus-visible~.nuda-co2-tag-filter__bar label {
  outline: 2px solid var(--nuda-co2-tf-accent);
  outline-offset: 2px;
}

.nuda-co2-tag-filter:has(#co2-tf-remote:checked) .nuda-co2-tag-filter__card:not([data-remote]) {
  display: none;
}

.nuda-co2-tag-filter:has(#co2-tf-senior:checked) .nuda-co2-tag-filter__card:not([data-senior]) {
  display: none;
}

@media (prefers-reduced-motion:reduce) {
  .nuda-co2-tag-filter__chip,.nuda-co2-tag-filter__card {
    transition: none;
  }
}