Check Pulse Checkbox

<!--
  Author: @pica.studio
  License: MIT
  Tags: #buttons #css #interface #opensource #codepeek
-->
<label class="check-pulse">
  <input type="checkbox" class="check-pulse__input"/>
  <span class="check-pulse__box">
    <svg class="check-pulse__mark" viewBox="0 0 24 24" fill="none">
      <path class="check-pulse__mark-path" d="M4 12.5L9.5 18L20 6.5" stroke="white" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"/>
    </svg>
    <span class="check-pulse__ring">
    </span>
  </span>
  <span class="check-pulse__label">Subscribe to updates</span>
</label>

/*
 * Author: @pica.studio
 * License: MIT
 * Tags: #buttons #css #interface #opensource #codepeek
 */

.check-pulse {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
  font-family: system-ui, sans-serif;
  color: #9a9a9a;
  font-size: 16px;
  font-weight: 500;
}
.check-pulse__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.check-pulse__box {
  position: relative;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  border-radius: 8px;
  background: #1c1c1f;
  border: 2px solid #454550;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.6), 0 0 0 0 rgba(94, 129, 255, 0);
  transition: background 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), border-color 0.4s ease, box-shadow 0.4s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.check-pulse__mark {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 2px;
}
.check-pulse__mark-path {
  stroke-dasharray: 24;
  stroke-dashoffset: 24;
  transition: stroke-dashoffset 0.35s ease 0.05s;
}
.check-pulse__ring {
  position: absolute;
  inset: -6px;
  border-radius: 12px;
  border: 2px solid #7c93ff;
  opacity: 0;
  transform: scale(0.6);
  pointer-events: none;
}
.check-pulse__input:checked ~ .check-pulse__box {
  background: linear-gradient(145deg, #6a7dff, #3a54e0);
  border-color: #7c93ff;
  transform: scale(1.08);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.25), 0 4px 14px 0 rgba(75, 100, 255, 0.55);
}
.check-pulse__input:checked ~ .check-pulse__box .check-pulse__mark-path {
  stroke-dashoffset: 0;
}
.check-pulse__input:checked ~ .check-pulse__box .check-pulse__ring {
  animation: ring-burst 0.6s ease-out forwards;
}
.check-pulse__input:active ~ .check-pulse__box {
  transform: scale(0.92);
}
.check-pulse__input:focus-visible ~ .check-pulse__box {
  box-shadow: 0 0 0 3px rgba(124, 147, 255, 0.4);
}
.check-pulse__input:checked ~ .check-pulse__label {
  color: #f2f2f5;
}
.check-pulse__label {
  transition: color 0.3s ease;
}
@keyframes ring-burst {
  0% {
    opacity: 0.9;
    transform: scale(0.7);
  }
  100% {
    opacity: 0;
    transform: scale(1.5);
  }
}