Wizard Footer Gated Next

<div class="nuda-st2-footer-gate">
  <div class="nuda-st2-footer-gate__body">
    <p>Step 3 of 4 — Review your plan</p>
  </div>
  <div class="nuda-st2-footer-gate__bar">
    <button type="button" class="nuda-st2-footer-gate__back">Back</button>
    <button type="button" class="nuda-st2-footer-gate__skip">Save &amp; exit</button>
    <button type="button" class="nuda-st2-footer-gate__next" disabled aria-disabled="true">
      Next
      <span class="nuda-st2-footer-gate__hint">Accept terms to continue</span>
    </button>
  </div>
</div>

.nuda-st2-footer-gate {
  width: 100%;
  max-width: 320px;
  background: rgba(255,255,255,.02);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 14px;
  overflow: hidden;
}

.nuda-st2-footer-gate__body {
  padding: 16px;
}

.nuda-st2-footer-gate__body p {
  margin: 0;
  color: #a0a0a8;
  font-size: 12px;
}

.nuda-st2-footer-gate__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid rgba(255,255,255,.06);
}

.nuda-st2-footer-gate__bar button {
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: filter .2s,transform .15s,opacity .2s;
}

.nuda-st2-footer-gate__back {
  background: transparent;
  border: 1px solid rgba(255,255,255,.14);
  color: #a0a0a8;
}

.nuda-st2-footer-gate__back:hover {
  color: #fafafa;
  border-color: rgba(255,255,255,.3);
}

.nuda-st2-footer-gate__skip {
  background: transparent;
  border: 0;
  color: #777;
  margin-right: auto;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.nuda-st2-footer-gate__skip:hover {
  color: #a0a0a8;
}

.nuda-st2-footer-gate__next {
  position: relative;
  background: #e4ff54;
  border: 0;
  color: #09090b;
}

.nuda-st2-footer-gate__next:not([disabled]):hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.nuda-st2-footer-gate__next[disabled] {
  opacity: .35;
  cursor: not-allowed;
}

.nuda-st2-footer-gate__hint {
  position: absolute;
  bottom: calc(100% + 6px);
  right: 0;
  white-space: nowrap;
  background: #1a1a1a;
  border: 1px solid rgba(255,255,255,.1);
  color: #a0a0a8;
  font-size: 10px;
  font-weight: 500;
  padding: 5px 8px;
  border-radius: 6px;
  opacity: 0;
  transform: translateY(3px);
  pointer-events: none;
  transition: opacity .2s,transform .2s;
}

.nuda-st2-footer-gate__next[disabled]:hover .nuda-st2-footer-gate__hint {
  opacity: 1;
  transform: translateY(0);
}

.nuda-st2-footer-gate__bar button:focus-visible {
  outline: 2px solid #e4ff54;
  outline-offset: 2px;
}

@media (prefers-reduced-motion:reduce) {
  .nuda-st2-footer-gate__bar button {
    transition: opacity .15s linear;
  }
  .nuda-st2-footer-gate__hint {
    transition: opacity .15s linear;
  }
}