Stacked Coin Press Button

<!--
  Author: @samir-khan
  License: MIT
  Tags: #buttons #css #interface #opensource #codepeek
-->
<button class="coin-btn">
  <span class="coin-btn__stack">
    <span></span><span></span><span></span>
  </span>
  <span class="coin-btn__label">Claim Cashback</span>
</button>

/*
 * Author: @samir-khan
 * License: MIT
 * Tags: #buttons #css #interface #opensource #codepeek
 */

.coin-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(180deg, #292115, #1a1508);
  border: 1px solid #4a3a12;
  color: #fbbf24;
  font-family: system-ui, sans-serif;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.coin-btn:active {
  transform: scaleY(0.88) translateY(2px);
}
.coin-btn__stack {
  position: relative;
  width: 26px;
  height: 20px;
}
.coin-btn__stack span {
  position: absolute;
  left: 0;
  width: 26px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(180deg, #fde68a, #f59e0b);
  border: 1px solid #b45309;
}
.coin-btn__stack span:nth-child(1) { top: 0; z-index: 3; }
.coin-btn__stack span:nth-child(2) { top: 5px; z-index: 2; opacity: 0.85; }
.coin-btn__stack span:nth-child(3) { top: 10px; z-index: 1; opacity: 0.7; }
.coin-btn:hover .coin-btn__stack span:nth-child(1) {
  animation: coin-wobble 0.5s ease;
}
@keyframes coin-wobble {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-6deg) translateY(-2px); }
}