Webleb - fragmentos de código - Luz de entrada de contraseña

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>
    
<form onsubmit="return false">
    <div class="form-item">
      <label>Username</label>
      <div class="input-wrapper">
        <input type="text" id="username" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false" data-lpignore="true"/>
      </div>
    </div>
    <div class="form-item">
      <label>Password</label>
      <div class="input-wrapper">
        <input type="password" id="password" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false" data-lpignore="true"/>
        <button type="button" id="eyeball">
          <div class="eye"></div>
        </button>
        <div id="beam"></div>
      </div>
    </div>
    <button id="submit">Sign in</button>
  </form>
  <script src="main.js"></script>
</body>
</html>

CSS

:root {
  --bgColor: white;
  --inputColor: black;
  --outlineColor: dodgerblue;
  --beamColor: yellow;
  --spacer: 1rem;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  display: grid;
  place-items: center;
  background: var(--bgColor);
  overflow: hidden;
}
body.show-password {
  --bgColor: black;
  --inputColor: white;
  --outlineColor: var(--beamColor);
}

form {
  transform: translate3d(0, 0, 0);
  padding: var(--spacer);
}
form > * + * {
  margin-top: var(--spacer);
}

.form-item > * + * {
  margin-top: 0.5rem;
}

label,
input,
button {
  font-size: 1.5rem;
  font-family: monospace;
  color: var(--inputColor);
}
label:focus,
input:focus,
button:focus {
  outline: 3px solid var(--outlineColor);
  outline-offset: 2px;
}
label::-moz-focus-inner,
input::-moz-focus-inner,
button::-moz-focus-inner {
  border: none;
}
label[id=password],
input[id=password],
button[id=password] {
  color: black;
}

button {
  border: none;
}

[id=submit] {
  cursor: pointer;
  margin: calc(var(--spacer) * 2) 0 0 2px;
  padding: 0.75rem 1.25rem;
  color: var(--bgColor);
  background-color: var(--inputColor);
  box-shadow: 4px 4px 0 rgba(30, 144, 255, 0.2);
}
[id=submit]:active {
  transform: translateY(1px);
}

.input-wrapper {
  position: relative;
}

input {
  padding: 0.75rem 4rem 0.75rem 0.75rem;
  width: 100%;
  border: 2px solid transparent;
  border-radius: 0;
  background-color: transparent;
  box-shadow: inset 0 0 0 2px black, inset 6px 6px 0 rgba(30, 144, 255, 0.2), 3px 3px 0 rgba(30, 144, 255, 0.2);
  -webkit-appearance: none;
}
input:focus {
  outline-offset: 1px;
}
.show-password input {
  box-shadow: inset 0 0 0 2px black;
  border: 2px dashed white;
}
.show-password input:focus {
  outline: none;
  border-color: var(--beamColor);
}

[id=eyeball] {
  --size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
  position: absolute;
  top: 50%;
  right: 0.75rem;
  border: none;
  background-color: transparent;
  transform: translateY(-50%);
}
[id=eyeball]:active {
  transform: translateY(calc(-50% + 1px));
}

.eye {
  width: var(--size);
  height: var(--size);
  border: 2px solid var(--inputColor);
  border-radius: calc(var(--size) / 1.5) 0;
  transform: rotate(45deg);
}
.eye:before, .eye:after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;
  border-radius: 100%;
}
.eye:before {
  width: 35%;
  height: 35%;
  background-color: var(--inputColor);
}
.eye:after {
  width: 65%;
  height: 65%;
  border: 2px solid var(--inputColor);
  border-radius: 100%;
}

[id=beam] {
  position: absolute;
  top: 50%;
  right: 1.75rem;
  clip-path: polygon(100% 50%, 100% 50%, 0 0, 0 100%);
  width: 100vw;
  height: 25vw;
  z-index: 1;
  mix-blend-mode: multiply;
  transition: transform 200ms ease-out;
  transform-origin: 100% 50%;
  transform: translateY(-50%) rotate(var(--beamDegrees, 0));
  pointer-events: none;
}
.show-password [id=beam] {
  background: var(--beamColor);
}

JS

Luz de entrada de contraseña

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