Transition Origins - html

Question

I am currently making a pretty simplistic login page. I would like that the transition between .form input[type="text"]:focus, .form input[type="password], instead of gradually fading the color in, it swooshes the new color from left to right.
Here is my code:
.form input[type="text"],
.form input[type="password"] {
margin-top: 0;
margin-bottom: 5px;
border: none;
border-bottom-width: 2px;
border-bottom-style: solid;
border-bottom-color: black;
background: transparent;
outline: none;
height: 2.5vh;
color: black;
border-radius: 0;
font-size: 100%;
transition-property: border-bottom-color;
transition-duration: 350ms;
transition-timing-function: cubic-bezier(0.4, 0.0, 0.2, 1);
}
.form input[type="text"]:focus,
.form input[type="password"]:focus {
border-bottom-color: #66bb6a;
}
<form class="form">
<input type="text" name="" placeholder="example#example.com">
</form>
Here is a JS Fiddle: https://jsfiddle.net/juja15ro/

Answer 1

I was able to do it but with javascript.
const inputs = document.querySelectorAll('.input-container input');
inputs.forEach((input) => {
input.addEventListener('focus', () => {
input.parentElement.classList.add('focused');
})
input.addEventListener('blur', () => {
input.parentElement.classList.remove('focused');
})
})
.input-container {
position: relative;
display: inline-block;
}
.input-container:after {
content: '';
position: absolute;
bottom: 0;
left: 0;
height: 2px;
width: 0;
background-color: #000;
transition: .24s ease-out;
}
.input-container input {
border: none;
background: transparent;
border-bottom: 1px solid #ccc;
outline: none;
}
.input-container.focused:after {
width: 100%;
}
<div class="input-container">
<input type="text" placeholder="Name">
</div>

Answer 2

I have created a span(input bar) and added :before and :after property to it and for the left to right movement, before should be 0% and after should be 100% .(Also try before to 50% and after to 50% and see movement effect starting from center) Here's my code
*:focus {
outline: none;
}
input {
display: block;
border: none;
border-bottom: 1px solid #000;
font-family: Trebuchet MS;
background: none;
}
.inputBar {
position: relative;
display: block;
width: 290px;
}
.inputBar:before,
.inputBar:after {
content: "";
display: block;
position: absolute;
bottom: 0;
width: 0;
background: #66bb6a;
height: 2px;
transition: all 0.2s ease;
}
.inputBar:after {
right: 100%;
}
.inputBar:before {
left: 0%;
}
input:focus~.inputBar:before,
input:focus~.inputBar:after {
width: 50%;
}
<form class="form">
<input type="text" name="" placeholder="example#example.com">
<span class="inputBar"></span>
</form>