Animated neon embossed login animation | HTML, CSS & JavaScript

<div class="particle p1"></div>
  <div class="particle p2"></div>
  <div class="particle p3"></div>
  <div class="particle p4"></div>
  <div class="particle p5"></div>
  <div class=scene>
    <div class=neon-ring-2></div>
    <div class=neon-ring></div>
    <div class=card id=card>
      <div class="card-face front">
        <form class=form id=loginForm>
          <h1>WELCOME</h1>
          <div class=form-subtitle>
            Login to your account
          </div>
          <div class=input-box>
            <input type=email id=loginEmail placeholder=" " required>
            <label>Email Address</label>
          </div>
          <div class="input-box password-box">
            <input type=password id=loginPassword placeholder=" " required>
            <label>Password</label>
            <span class=password-toggle onclick='togglePassword("loginPassword",this)'>
              👁
            </span>
          </div>
          <div class=options>
            <label>
              <input type=checkbox>
              Remember me
            </label>
            <a href=#>
              Forgot?
            </a>
          </div>
          <button class=btn id=loginBtn type=submit>
            LOGIN
          </button>
          <div class=message id=loginMessage></div>
          <div class=switch>
            Don't have an account?
            <span onclick=showSignup()>
              Sign Up
            </span>
          </div>
        </form>
      </div>
      <div class="card-face back">
        <form class=form id=signupForm>
          <h1>SIGN UP</h1>
          <div class=form-subtitle>
            Create your account
          </div>
          <div class=input-box>
            <input id=signupName placeholder=" " required>
            <label>Full Name</label>
          </div>
          <div class=input-box>
            <input type=email id=signupEmail placeholder=" " required>
            <label>Email Address</label>
          </div>
          <div class="input-box password-box">
            <input type=password id=signupPassword placeholder=" " required>
            <label>Password</label>
            <span class=password-toggle onclick='togglePassword("signupPassword",this)'>
              👁
            </span>
          </div>
          <button class=btn id=signupBtn type=submit>
            CREATE ACCOUNT
          </button>
          <div class=message id=signupMessage></div>
          <div class=switch>
            Already have an account?
            <span onclick=showLogin()>
              Login
            </span>
          </div>
        </form>
      </div>
    </div>
  </div>

* {
      margin: 0;
      padding: 0;
      box-sizing: border-box
    }

body {
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      overflow: hidden;
      font-family: Arial, sans-serif;
		scale:0.7;
      background: radial-gradient(circle at center, #202a38 0, #111827 45%, #050912 100%)
    }

body::before {
      content: "";
      position: fixed;
      width: 600px;
      height: 600px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0, 255, 255, .15), transparent 65%);
      filter: blur(30px);
      animation: backgroundPulse 4s ease-in-out infinite
    }

@keyframes backgroundPulse {

0%,
      100% {
        transform: scale(.9);
        opacity: .5
      }

50% {
        transform: scale(1.2);
        opacity: 1
      }
    }

.particle {
      position: fixed;
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: #0ff;
      box-shadow: 0 0 8px #0ff, 0 0 20px #0ff;
      animation: particleMove linear infinite
    }

.p1 {
      left: 10%;
      bottom: -20px;
      animation-duration: 8s
    }

.p2 {
      left: 25%;
      bottom: -20px;
      animation-duration: 11s;
      animation-delay: 2s
    }

.p3 {
      left: 70%;
      bottom: -20px;
      animation-duration: 9s;
      animation-delay: 1s
    }

.p4 {
      left: 85%;
      bottom: -20px;
      animation-duration: 13s;
      animation-delay: 3s
    }

.p5 {
      left: 50%;
      bottom: -20px;
      animation-duration: 10s;
      animation-delay: 4s
    }

@keyframes particleMove {
      0% {
        transform: translateY(0) scale(.5);
        opacity: 0
      }

20% {
        opacity: 1
      }

100% {
        transform: translateY(-110vh) translateX(80px) scale(1.5);
        opacity: 0
      }
    }

.scene {
      position: relative;
      width: 500px;
      height: 500px;
      perspective: 1600px;
      z-index: 10
    }

.neon-ring {
      position: absolute;
      inset: -8px;
      border-radius: 50%;
      background: conic-gradient(from 0deg, transparent 0deg, transparent 30deg, #0ff 60deg, #008cff 90deg, transparent 130deg, transparent 180deg, #f0f 220deg, #0ff 280deg, transparent 330deg, transparent 360deg);
      animation: ringRotate 3s linear infinite;
      filter: drop-shadow(0 0 5px #00ffff) drop-shadow(0 0 15px #00ffff) drop-shadow(0 0 30px #008cff);
      z-index: -2
    }

.neon-ring::after {
      content: "";
      position: absolute;
      inset: 7px;
      border-radius: 50%;
      background: #101722
    }

@keyframes ringRotate {
      from {
        transform: rotate(0)
      }

to {
        transform: rotate(360deg)
      }
    }

.neon-ring-2 {
      position: absolute;
      inset: -20px;
      border-radius: 50%;
      border: 1px solid rgba(0, 255, 255, .25);
      box-shadow: 0 0 15px rgba(0, 255, 255, .3), inset 0 0 15px rgba(0, 255, 255, .15);
      animation: ringPulse 2s ease-in-out infinite
    }

@keyframes ringPulse {

0%,
      100% {
        transform: scale(1);
        opacity: .5
      }

50% {
        transform: scale(1.04);
        opacity: 1
      }
    }

.card {
      width: 100%;
      height: 100%;
      position: relative;
      transform-style: preserve-3d;
      transition: transform 1.2s cubic-bezier(.68, -.55, .27, 1.55)
    }

.card.signup-mode {
      transform: rotateY(180deg)
    }

.card-face {
      position: absolute;
      width: 100%;
      height: 100%;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      backface-visibility: hidden;
      background: radial-gradient(circle at 35% 25%, #273344, #111a27 65%, #080e18);
      border: 1px solid rgba(255, 255, 255, .08);
      box-shadow: inset 10px 10px 30px rgba(255, 255, 255, .04), inset -15px -15px 35px rgba(0, 0, 0, .5), 0 25px 60px rgba(0, 0, 0, .7)
    }

.back {
      transform: rotateY(180deg)
    }

.form {
      width: 285px;
      position: relative;
      z-index: 20;
      animation: formFloat 4s ease-in-out infinite
    }

@keyframes formFloat {

0%,
      100% {
        transform: translateY(0)
      }

50% {
        transform: translateY(-8px)
      }
    }

.form h1 {
      text-align: center;
      font-size: 30px;
      margin-bottom: 7px;
      color: #e8ffff;
      text-shadow: 0 0 5px #0ff, 0 0 15px #0ff, 0 0 30px rgba(0, 255, 255, .5);
      animation: titleGlow 2s ease-in-out infinite alternate
    }

@keyframes titleGlow {
      from {
        text-shadow: 0 0 5px #0ff, 0 0 10px #0ff
      }

to {
        text-shadow: 0 0 10px #0ff, 0 0 25px #0ff, 0 0 40px #008cff
      }
    }

.form-subtitle {
      text-align: center;
      color: #8fa5b9;
      font-size: 12px;
      margin-bottom: 25px
    }

.input-box {
      position: relative;
      margin-bottom: 18px
    }

.input-box input {
      width: 100%;
      height: 48px;
      border: 1px solid rgba(0, 255, 255, .18);
      outline: 0;
      border-radius: 25px;
      padding: 0 20px;
      background: rgba(5, 15, 25, .8);
      color: #fff;
      box-shadow: inset 5px 5px 12px rgba(0, 0, 0, .6), inset -3px -3px 10px rgba(255, 255, 255, .03);
      transition: .4s
    }

.input-box input:focus {
      border-color: #0ff;
      box-shadow: 0 0 5px #0ff, 0 0 15px rgba(0, 255, 255, .35), inset 4px 4px 10px rgba(0, 0, 0, .6)
    }

.input-box label {
      position: absolute;
      left: 20px;
      top: 15px;
      color: #7890a5;
      font-size: 13px;
      pointer-events: none;
      transition: .3s
    }

.input-box input:focus+label,
    .input-box input:not(:placeholder-shown)+label {
      top: -8px;
      left: 18px;
      padding: 0 8px;
      border-radius: 10px;
      background: #111a27;
      color: #0ff;
      font-size: 10px;
      text-shadow: 0 0 8px #0ff
    }

.password-box {
      position: relative
    }

.password-toggle {
      position: absolute;
      right: 18px;
      top: 14px;
      cursor: pointer;
      color: #6f8da3;
      transition: .3s
    }

.password-toggle:hover {
      color: #0ff;
      text-shadow: 0 0 10px #0ff
    }

.options {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin: 5px 5px 20px;
      color: #71879b;
      font-size: 11px
    }

.options a {
      color: #0ff;
      text-decoration: none
    }

.options a:hover {
      text-shadow: 0 0 10px #0ff
    }

.btn {
      position: relative;
      width: 100%;
      height: 48px;
      border: 1px solid #0ff;
      border-radius: 25px;
      background: linear-gradient(90deg, rgba(0, 255, 255, .08), rgba(0, 140, 255, .15));
      color: #dfffff;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 2px;
      cursor: pointer;
      overflow: hidden;
      box-shadow: 0 0 5px #0ff, 0 0 15px rgba(0, 255, 255, .4), inset 0 0 15px rgba(0, 255, 255, .08);
      transition: .3s
    }

.btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 0 10px #0ff, 0 0 25px #0ff, 0 0 45px rgba(0, 140, 255, .6)
    }

.btn:active {
      transform: scale(.96)
    }

.btn::before {
      content: "";
      position: absolute;
      top: 0;
      left: -100%;
      width: 60%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .5), transparent);
      transform: skewX(-25deg);
      animation: buttonShine 2.5s infinite
    }

@keyframes buttonShine {
      0% {
        left: -100%
      }

100%,
      50% {
        left: 140%
      }
    }

.switch {
      text-align: center;
      margin-top: 18px;
      font-size: 12px;
      color: #71879b
    }

.switch span {
      color: #0ff;
      font-weight: 700;
      cursor: pointer;
      text-shadow: 0 0 8px #0ff
    }

.switch span:hover {
      text-decoration: underline
    }

.message {
      min-height: 18px;
      text-align: center;
      margin-top: 10px;
      font-size: 12px;
      font-weight: 700;
      opacity: 0;
      transform: translateY(8px);
      transition: .4s
    }

.message.show {
      opacity: 1;
      transform: translateY(0)
    }

.message.success {
      color: #00ffae;
      text-shadow: 0 0 8px #00ffae, 0 0 18px #00ffae
    }

.message.failed {
      color: #f57;
      text-shadow: 0 0 8px #f57, 0 0 18px #f57
    }

@media(max-width:520px) {
      .scene {
        width: 360px;
        height: 360px
      }

.neon-ring {
        inset: -6px
      }

.neon-ring-2 {
        inset: -12px
      }

.form {
        width: 215px
      }

.form h1 {
        font-size: 22px
      }

.form-subtitle {
        font-size: 10px;
        margin-bottom: 15px
      }

.input-box {
        margin-bottom: 11px
      }

.input-box input {
        height: 38px
      }

.input-box label {
        top: 12px
      }

.password-toggle {
        top: 10px
      }

.btn {
        height: 40px;
        font-size: 12px
      }
    }

.loading {
      pointer-events: none;
      opacity: .6
    }

.loading::after {
      content: "";
      display: inline-block;
      width: 12px;
      height: 12px;
      margin-left: 8px;
      border: 2px solid rgba(255, 255, 255, .3);
      border-top-color: #0ff;
      border-radius: 50%;
      vertical-align: middle;
      animation: spin .7s linear infinite
    }

@keyframes spin {
      to {
        transform: rotate(360deg)
      }
    }

const card = document.getElementById("card");
    function showSignup() {
      card.classList.add("signup-mode");
      clearMessages();
    }

function showLogin() {
      card.classList.remove("signup-mode");
      clearMessages();
    }

function showMessage( element, text, type) {
      element.textContent = text;
      element.className = "message show " + type;
    }

function clearMessages() {
      document.querySelectorAll(".message").forEach(message => {
          message.textContent = "";
          message.className = "message";
        });
    }

document.getElementById("loginForm").addEventListener("submit",function (e) {
          e.preventDefault();
          const email = document.getElementById("loginEmail").value;
          const password =
            document.getElementById("loginPassword").value;
            const message = document.getElementById("loginMessage");
            const button =document.getElementById("loginBtn");
            button.classList.add("loading");
            setTimeout(() => {
            button.classList.remove("loading");
            /*
                DEMO LOGIN

Email:
                admin@example.com

Password:
                123456
            */

if (email === "admin@example.com" && password === "123456") 
              { 
                  showMessage(message, "✓ LOGIN SUCCESSFUL!", "success"); 
              } else { 
                  showMessage(message, "✕ INVALID EMAIL OR PASSWORD!", "failed"); 
              } 
          }, 900); 
          } 
          );  
          document.getElementById("signupForm").addEventListener("submit", function (e) { e.preventDefault(); 
              const name = document.getElementById("signupName").value.trim(); 
              const email = document.getElementById("signupEmail").value.trim(); 
              const password = document.getElementById("signupPassword").value; 
              const message = document.getElementById("signupMessage"); 
              const button = document.getElementById("signupBtn"); 
              button.classList.add("loading"); 
              setTimeout(() => { button.classList.remove("loading"); 
                  if (name.length >= 3 && email.includes("@") && email.includes(".") && password.length >= 6) 
                      { showMessage(message, "✓ ACCOUNT CREATED SUCCESSFULLY!", "success");

} else { 
                          showMessage(message, "✕ PLEASE ENTER VALID INFORMATION!", "failed"); 
                      } 
                  }, 900); 
              });

- Animated neon embossed login animation

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