Animated Gradient Sign-Up Button with Floating Dots

<button type="button" class="button">
  <div class="points_wrapper">
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
    <i class="point"></i>
  </div>

  <span class="inner">
    Sign Up
    <svg class="icon" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5">
      <path d="M5 12h14" class=""></path>
      <path d="m12 5 7 7-7 7" class=""></path>
    </svg>
  </span>
  <style>
    .button {
      cursor: pointer;
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      transition: all 0.25s ease;
      background: radial-gradient(65.28% 65.28% at 50% 100%,
          rgba(79, 70, 229, 0.3) 0%,
          rgba(79, 70, 229, 0) 100%),
        linear-gradient(0deg, #1e1b4b, #1e1b4b);
      border-radius: 0.5rem;
      border: none;
      outline: none;
      padding: 8px 12px;
      min-height: 32px;
      min-width: 80px;
    }
  
    .button::before,
    .button::after {
      content: "";
      position: absolute;
      transition: all 0.5s ease-in-out;
      z-index: 0;
    }
  
    .button::before {
      inset: 1px;
      background: linear-gradient(177.95deg,
          rgba(255, 255, 255, 0.08) 0%,
          rgba(255, 255, 255, 0) 100%);
      border-radius: calc(0.5rem - 1px);
    }
  
    .button::after {
      inset: 2px;
      background: radial-gradient(65.28% 65.28% at 50% 100%,
          rgba(79, 70, 229, 0.3) 0%,
          rgba(79, 70, 229, 0) 100%),
        linear-gradient(0deg, #1e1b4b, #1e1b4b);
      border-radius: calc(0.5rem - 2px);
    }
  
    .button:active {
      transform: scale(0.95);
    }
  
    .points_wrapper {
      overflow: hidden;
      width: 100%;
      height: 100%;
      pointer-events: none;
      position: absolute;
      z-index: 1;
    }
  
    .points_wrapper .point {
      bottom: -8px;
      position: absolute;
      animation: floating-points infinite ease-in-out;
      pointer-events: none;
      width: 1.5px;
      height: 1.5px;
      background-color: #a5b4fc;
      border-radius: 9999px;
    }
  
    @keyframes floating-points {
      0% {
        transform: translateY(0);
      }
  
      85% {
        opacity: 0;
      }
  
      100% {
        transform: translateY(-40px);
        opacity: 0;
      }
    }
  
    .points_wrapper .point:nth-child(1) {
      left: 10%;
      opacity: 0.8;
      animation-duration: 2.35s;
      animation-delay: 0.2s;
    }
  
    .points_wrapper .point:nth-child(2) {
      left: 30%;
      opacity: 0.6;
      animation-duration: 2.5s;
      animation-delay: 0.5s;
    }
  
    .points_wrapper .point:nth-child(3) {
      left: 25%;
      opacity: 0.7;
      animation-duration: 2.2s;
      animation-delay: 0.1s;
    }
  
    .points_wrapper .point:nth-child(4) {
      left: 44%;
      opacity: 0.5;
      animation-duration: 2.05s;
    }
  
    .points_wrapper .point:nth-child(5) {
      left: 50%;
      opacity: 0.8;
      animation-duration: 1.9s;
    }
  
    .points_wrapper .point:nth-child(6) {
      left: 75%;
      opacity: 0.4;
      animation-duration: 1.5s;
      animation-delay: 1.5s;
    }
  
    .points_wrapper .point:nth-child(7) {
      left: 88%;
      opacity: 0.7;
      animation-duration: 2.2s;
      animation-delay: 0.2s;
    }
  
    .points_wrapper .point:nth-child(8) {
      left: 58%;
      opacity: 0.6;
      animation-duration: 2.25s;
      animation-delay: 0.2s;
    }
  
    .points_wrapper .point:nth-child(9) {
      left: 98%;
      opacity: 0.5;
      animation-duration: 2.6s;
      animation-delay: 0.1s;
    }
  
    .points_wrapper .point:nth-child(10) {
      left: 65%;
      opacity: 0.8;
      animation-duration: 2.5s;
      animation-delay: 0.2s;
    }
  
    .inner {
      z-index: 2;
      gap: 4px;
      position: relative;
      width: 100%;
      color: #e2e8f0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 500;
      line-height: 1.4;
      transition: color 0.2s ease-in-out;
    }
  
    .inner svg.icon {
      width: 14px;
      height: 14px;
      transition: transform 0.3s ease;
      stroke: #e2e8f0;
      fill: none;
    }
  
    .button:hover svg.icon {
      transform: translateX(2px);
    }
  
    .button:hover svg.icon path {
      animation: dash 0.8s linear forwards;
    }
  
    @keyframes dash {
      0% {
        stroke-dasharray: 0, 20;
        stroke-dashoffset: 0;
      }
  
      50% {
        stroke-dasharray: 10, 10;
        stroke-dashoffset: -5;
      }
  
      100% {
        stroke-dasharray: 20, 0;
        stroke-dashoffset: -10;
      }
    }
  </style>
</button>