Captions Toggle

<!-- Captions Toggle — toggle .is-active to show CC enabled -->
<button class="nuda-cc" type="button" aria-label="Captions">
  <span class="nuda-cc__box">CC</span>
  <span class="nuda-cc__line"></span>
</button>

/* Captions Toggle
   "CC" badge with an underline that draws when active.
   Customize: --cc-accent */

.nuda-cc {
  --cc-accent: #e4ff54;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  background: transparent;
  border: none;
  color: #fafafa;
  cursor: pointer;
  transition: color 0.2s;
}

.nuda-cc:hover { color: var(--cc-accent); }

.nuda-cc__box {
  font: 800 0.75rem ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.04em;
  padding: 3px 6px;
  border: 1.5px solid currentColor;
  border-radius: 4px;
  line-height: 1;
}

.nuda-cc.is-active { color: var(--cc-accent); }

.nuda-cc.is-active .nuda-cc__box {
  background: rgba(228, 255, 84, 0.15);
  box-shadow: 0 0 4px rgba(228, 255, 84, 0.3);
}

.nuda-cc__line {
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--cc-accent);
  border-radius: 1px;
  transform: translateX(-50%);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nuda-cc.is-active .nuda-cc__line {
  width: 60%;
  box-shadow: 0 0 4px rgba(228, 255, 84, 0.5);
}