Achievement Unlock

<div class="nuda-achiev">
  <div class="nuda-achiev__shine"></div>
  <div class="nuda-achiev__medal">
    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor"
         stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
      <circle cx="12" cy="13" r="7" />
      <path d="M8.5 11l3 2 4-4" />
      <path d="M9 6l-3-4M15 6l3-4" />
    </svg>
  </div>
  <div class="nuda-achiev__body">
    <div class="nuda-achiev__label">Achievement Unlocked</div>
    <div class="nuda-achiev__title">Speed Demon</div>
  </div>
</div>

.nuda-achiev {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: linear-gradient(135deg,#1a1a20,#0c0c10);
  border: 1px solid #e4ff54;
  border-radius: 12px;
  color: #fafafa;
  width: 100%;
  max-width: 260px;
  overflow: hidden;
  animation: _achievIn .65s cubic-bezier(.34,1.56,.64,1) both;
  box-shadow: 0 12px 32px -12px rgba(228,255,84,.4);
}

.nuda-achiev__shine {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  background: linear-gradient(90deg,transparent,rgba(228,255,84,.3),transparent);
  transform: translateX(-100%);
  animation: _achievShine 2.4s ease-in-out infinite 0.6s;
}

.nuda-achiev__medal {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #e4ff54;
  color: #09090b;
  flex-shrink: 0;
  animation: _achievMedal 1s cubic-bezier(.34,1.56,.64,1);
  z-index: 1;
}

.nuda-achiev__medal svg {
  width: 22px;
  height: 22px;
}

.nuda-achiev__label {
  font-size: 9px;
  color: #e4ff54;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-family: ui-monospace,SFMono-Regular,Menlo,monospace;
}

.nuda-achiev__title {
  font-size: 14px;
  font-weight: 700;
  margin-top: 2px;
}

.nuda-achiev__body {
  position: relative;
  z-index: 1;
}

@keyframes _achievIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(.92);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes _achievShine {
  0% {
    transform: translateX(-100%);
  }
  50%,100% {
    transform: translateX(300%);
  }
}

@keyframes _achievMedal {
  0% {
    transform: scale(0) rotate(-180deg);
  }
  60% {
    transform: scale(1.15) rotate(20deg);
  }
  100% {
    transform: scale(1) rotate(0);
  }
}

@media (prefers-reduced-motion:reduce) {
  .nuda-achiev,.nuda-achiev__shine,.nuda-achiev__medal {
    animation: none;
  }
}