Botón animado HTML con SVG y texto

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HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>Andev Web</title>
</head>
<body>
    <button class="button">
        <div class="bg"></div>
        <svg
          xmlns="http://www.w3.org/2000/svg"
          fill="none"
          viewBox="0 0 342 208"
          height="208"
          width="342"
          class="splash"
        >
          <path
            stroke-linecap="round"
            stroke-width="3"
            d="M54.1054 99.7837C54.1054 99.7837 40.0984 90.7874 26.6893 97.6362C13.2802 104.485 1.5 97.6362 1.5 97.6362"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            d="M285.273 99.7841C285.273 99.7841 299.28 90.7879 312.689 97.6367C326.098 104.486 340.105 95.4893 340.105 95.4893"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            stroke-opacity="0.3"
            d="M281.133 64.9917C281.133 64.9917 287.96 49.8089 302.934 48.2295C317.908 46.6501 319.712 36.5272 319.712 36.5272"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            stroke-opacity="0.3"
            d="M281.133 138.984C281.133 138.984 287.96 154.167 302.934 155.746C317.908 157.326 319.712 167.449 319.712 167.449"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            d="M230.578 57.4476C230.578 57.4476 225.785 41.5051 236.061 30.4998C246.337 19.4945 244.686 12.9998 244.686 12.9998"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            d="M230.578 150.528C230.578 150.528 225.785 166.471 236.061 177.476C246.337 188.481 244.686 194.976 244.686 194.976"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            stroke-opacity="0.3"
            d="M170.392 57.0278C170.392 57.0278 173.89 42.1322 169.571 29.54C165.252 16.9478 168.751 2.05227 168.751 2.05227"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            stroke-opacity="0.3"
            d="M170.392 150.948C170.392 150.948 173.89 165.844 169.571 178.436C165.252 191.028 168.751 205.924 168.751 205.924"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            d="M112.609 57.4476C112.609 57.4476 117.401 41.5051 107.125 30.4998C96.8492 19.4945 98.5 12.9998 98.5 12.9998"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            d="M112.609 150.528C112.609 150.528 117.401 166.471 107.125 177.476C96.8492 188.481 98.5 194.976 98.5 194.976"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            stroke-opacity="0.3"
            d="M62.2941 64.9917C62.2941 64.9917 55.4671 49.8089 40.4932 48.2295C25.5194 46.6501 23.7159 36.5272 23.7159 36.5272"
          ></path>
          <path
            stroke-linecap="round"
            stroke-width="3"
            stroke-opacity="0.3"
            d="M62.2941 145.984C62.2941 145.984 55.4671 161.167 40.4932 162.746C25.5194 164.326 23.7159 174.449 23.7159 174.449"
          ></path>
        </svg>
      
        <div class="wrap">
          <svg
            xmlns="http://www.w3.org/2000/svg"
            fill="none"
            viewBox="0 0 221 42"
            height="42"
            width="221"
            class="path"
          >
            <path
              stroke-linecap="round"
              stroke-width="3"
              d="M182.674 2H203C211.837 2 219 9.16344 219 18V24C219 32.8366 211.837 40 203 40H18C9.16345 40 2 32.8366 2 24V18C2 9.16344 9.16344 2 18 2H47.8855"
            ></path>
          </svg>
      
          <div class="outline"></div>
          <div class="content">
            <span class="char state-1">
              <span data-label="J" style="--i: 1">J</span>
              <span data-label="o" style="--i: 2">o</span>
              <span data-label="i" style="--i: 3">i</span>
              <span data-label="n" style="--i: 4">n</span>
              <span data-label="T" style="--i: 5">T</span>
              <span data-label="o" style="--i: 6">o</span>
              <span data-label="d" style="--i: 7">d</span>
              <span data-label="a" style="--i: 8">a</span>
              <span data-label="y" style="--i: 9">y</span>
            </span>
      
            <div class="icon">
              <div></div>
            </div>
      
            <span class="char state-2">
              <span data-label="J" style="--i: 1">J</span>
              <span data-label="o" style="--i: 2">o</span>
              <span data-label="i" style="--i: 3">i</span>
              <span data-label="n" style="--i: 4">n</span>
              <span data-label="N" style="--i: 5">N</span>
              <span data-label="o" style="--i: 6">o</span>
              <span data-label="w" style="--i: 7">w</span>
            </span>
          </div>
        </div>
      </button>
      
</body>
</html>

CSS

body {
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #eed7fd;
}

.button {
    --white: #ffe7ff;
    --purple-100: #f4b1fd;
    --purple-200: #d190ff;
    --purple-300: #c389f2;
    --purple-400: #8e26e2;
    --purple-500: #5e2b83;
    --radius: 18px;
  
    border-radius: var(--radius);
    outline: none;
    cursor: pointer;
    font-size: 23px;
    font-family: Arial;
    background: transparent;
    letter-spacing: -1px;
    border: 0;
    position: relative;
    width: 220px;
    height: 80px;
    transform: rotate(353deg) skewX(4deg);
  }
  
  .bg {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    filter: blur(1px);
  }
  .bg::before,
  .bg::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: calc(var(--radius) * 1.1);
    background: var(--purple-500);
  }
  .bg::before {
    filter: blur(5px);
    transition: all 0.3s ease;
    box-shadow:
      -7px 6px 0 0 rgb(115 75 155 / 40%),
      -14px 12px 0 0 rgb(115 75 155 / 30%),
      -21px 18px 4px 0 rgb(115 75 155 / 25%),
      -28px 24px 8px 0 rgb(115 75 155 / 15%),
      -35px 30px 12px 0 rgb(115 75 155 / 12%),
      -42px 36px 16px 0 rgb(115 75 155 / 8%),
      -56px 42px 20px 0 rgb(115 75 155 / 5%);
  }
  
  .wrap {
    border-radius: inherit;
    overflow: hidden;
    height: 100%;
    transform: translate(6px, -6px);
    padding: 3px;
    background: linear-gradient(
      to bottom,
      var(--purple-100) 0%,
      var(--purple-400) 100%
    );
    position: relative;
    transition: all 0.3s ease;
  }
  
  .outline {
    position: absolute;
    overflow: hidden;
    inset: 0;
    opacity: 0;
    outline: none;
    border-radius: inherit;
    transition: all 0.4s ease;
  }
  .outline::before {
    content: "";
    position: absolute;
    inset: 2px;
    width: 120px;
    height: 300px;
    margin: auto;
    background: linear-gradient(
      to right,
      transparent 0%,
      white 50%,
      transparent 100%
    );
    animation: spin 3s linear infinite;
    animation-play-state: paused;
  }
  
  .content {
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    position: relative;
    height: 100%;
    gap: 16px;
    border-radius: calc(var(--radius) * 0.85);
    font-weight: 600;
    transition: all 0.3s ease;
    background: linear-gradient(
      to bottom,
      var(--purple-300) 0%,
      var(--purple-400) 100%
    );
    box-shadow:
      inset -2px 12px 11px -5px var(--purple-200),
      inset 1px -3px 11px 0px rgb(0 0 0 / 35%);
  }
  .content::before {
    content: "";
    inset: 0;
    position: absolute;
    z-index: 10;
    width: 80%;
    top: 45%;
    bottom: 35%;
    opacity: 0.7;
    margin: auto;
    background: linear-gradient(to bottom, transparent, var(--purple-400));
    filter: brightness(1.3) blur(5px);
  }
  
  .char {
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .char span {
    display: block;
    color: transparent;
    position: relative;
  }
  .char span:nth-child(5) {
    margin-left: 5px;
  }
  .char.state-1 span:nth-child(5) {
    margin-right: -3px;
  }
  .char.state-1 span {
    animation: charAppear 1.2s ease backwards calc(var(--i) * 0.03s);
  }
  .char.state-1 span::before,
  .char span::after {
    content: attr(data-label);
    position: absolute;
    color: var(--white);
    text-shadow: -1px 1px 2px var(--purple-500);
    left: 0;
  }
  .char span::before {
    opacity: 0;
    transform: translateY(-100%);
  }
  .char.state-2 {
    position: absolute;
    left: 80px;
  }
  .char.state-2 span::after {
    opacity: 1;
  }
  
  .icon {
    animation: resetArrow 0.8s cubic-bezier(0.7, -0.5, 0.3, 1.2) forwards;
    z-index: 10;
  }
  .icon div,
  .icon div::before,
  .icon div::after {
    height: 3px;
    border-radius: 1px;
    background-color: var(--white);
  }
  .icon div::before,
  .icon div::after {
    content: "";
    position: absolute;
    right: 0;
    transform-origin: center right;
    width: 14px;
    border-radius: 15px;
    transition: all 0.3s ease;
  }
  .icon div {
    position: relative;
    width: 24px;
    box-shadow: -2px 2px 5px var(--purple-400);
    transform: scale(0.9);
    background: linear-gradient(to bottom, var(--white), var(--purple-100));
    animation: swingArrow 1s ease-in-out infinite;
    animation-play-state: paused;
  }
  .icon div::before {
    transform: rotate(44deg);
    top: 1px;
    box-shadow: 1px -2px 3px -1px var(--purple-400);
    animation: rotateArrowLine 1s linear infinite;
    animation-play-state: paused;
  }
  .icon div::after {
    bottom: 1px;
    transform: rotate(316deg);
    box-shadow: -2px 2px 3px 0 var(--purple-400);
    background: linear-gradient(200deg, var(--white), var(--purple-100));
    animation: rotateArrowLine2 1s linear infinite;
    animation-play-state: paused;
  }
  
  .path {
    position: absolute;
    z-index: 12;
    bottom: 0;
    left: 0;
    right: 0;
    stroke-dasharray: 150 480;
    stroke-dashoffset: 150;
    pointer-events: none;
  }
  
  .splash {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    stroke-dasharray: 60 60;
    stroke-dashoffset: 60;
    transform: translate(-17%, -31%);
    stroke: var(--purple-300);
  }
  
  /** STATES */
  
  .button:hover .words {
    opacity: 1;
  }
  .button:hover .words span {
    animation-play-state: running;
  }
  
  .button:hover .char.state-1 span::before {
    animation: charAppear 0.7s ease calc(var(--i) * 0.03s);
  }
  
  .button:hover .char.state-1 span::after {
    opacity: 1;
    animation: charDisappear 0.7s ease calc(var(--i) * 0.03s);
  }
  
  .button:hover .wrap {
    transform: translate(8px, -8px);
  }
  
  .button:hover .outline {
    opacity: 1;
  }
  
  .button:hover .outline::before,
  .button:hover .icon div::before,
  .button:hover .icon div::after,
  .button:hover .icon div {
    animation-play-state: running;
  }
  
  .button:active .bg::before {
    filter: blur(5px);
    opacity: 0.7;
    box-shadow:
      -7px 6px 0 0 rgb(115 75 155 / 40%),
      -14px 12px 0 0 rgb(115 75 155 / 25%),
      -21px 18px 4px 0 rgb(115 75 155 / 15%);
  }
  .button:active .content {
    box-shadow:
      inset -1px 12px 8px -5px rgba(71, 0, 137, 0.4),
      inset 0px -3px 8px 0px var(--purple-200);
  }
  
  .button:active .words,
  .button:active .outline {
    opacity: 0;
  }
  
  .button:active .wrap {
    transform: translate(3px, -3px);
  }
  
  .button:active .splash {
    animation: splash 0.8s cubic-bezier(0.3, 0, 0, 1) forwards 0.05s;
  }
  
  .button:focus .path {
    animation: path 1.6s ease forwards 0.2s;
  }
  
  .button:focus .icon {
    animation: arrow 1s cubic-bezier(0.7, -0.5, 0.3, 1.5) forwards;
  }
  
  .char.state-2 span::after,
  .button:focus .char.state-1 span {
    animation: charDisappear 0.5s ease forwards calc(var(--i) * 0.03s);
  }
  
  .button:focus .char.state-2 span::after {
    animation: charAppear 1s ease backwards calc(var(--i) * 0.03s);
  }
  
  @keyframes spin {
    0% {
      transform: rotate(0deg);
    }
    100% {
      transform: rotate(360deg);
    }
  }
  
  @keyframes charAppear {
    0% {
      transform: translateY(50%);
      opacity: 0;
      filter: blur(20px);
    }
    20% {
      transform: translateY(70%);
      opacity: 1;
    }
    50% {
      transform: translateY(-15%);
      opacity: 1;
      filter: blur(0);
    }
    100% {
      transform: translateY(0);
      opacity: 1;
    }
  }
  
  @keyframes charDisappear {
    0% {
      transform: translateY(0);
      opacity: 1;
    }
    100% {
      transform: translateY(-70%);
      opacity: 0;
      filter: blur(3px);
    }
  }
  
  @keyframes arrow {
    0% {
      opacity: 1;
    }
    50% {
      transform: translateX(60px);
      opacity: 0;
    }
    51% {
      transform: translateX(-200px);
      opacity: 0;
    }
    100% {
      transform: translateX(-128px);
      opacity: 1;
    }
  }
  
  @keyframes swingArrow {
    50% {
      transform: translateX(5px) scale(0.9);
    }
  }
  
  @keyframes rotateArrowLine {
    50% {
      transform: rotate(30deg);
    }
    80% {
      transform: rotate(55deg);
    }
  }
  
  @keyframes rotateArrowLine2 {
    50% {
      transform: rotate(330deg);
    }
    80% {
      transform: rotate(300deg);
    }
  }
  
  @keyframes resetArrow {
    0% {
      transform: translateX(-128px);
    }
    100% {
      transform: translateX(0);
    }
  }
  
  @keyframes path {
    from {
      stroke: white;
    }
    to {
      stroke-dashoffset: -480;
      stroke: #f9c6fe;
    }
  }
  
  @keyframes splash {
    to {
      stroke-dasharray: 2 60;
      stroke-dashoffset: -60;
    }
  }