@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500;600;700;800;900&display=swap');
*{
    margin:0; 
    padding:0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
body
{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
body::before
{
    content:'';
    position: absolute;
    inset:0;
    background: url(bg1.jpg);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}
body::after
{
    content:'';
    position: absolute;
    inset: 0;
    background: url(bg2.jpg);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: 0.5s;
}
body.signup::after
{
    opacity: 1;
}
.container 
{
    position: relative;
    width: 350px;
    height: 340px;
    border-radius: 15px;
    box-shadow:0 5px 25px rgba(0,0,0,0.25);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index:1000;
    transition: 0.5s;
    overflow: hidden;
}
body.signup .container
{
    height: 440px;
}
.container::before
{
    content:'';
    position: absolute;
    width:100%;
    height:100%;
    background: repeating-conic-gradient(from var(--a), #45f3ff 0%, 
    #45f3ff 10% transparent 10%,transparent 80%,#45f3ff 100%);
    border-radius: 20px;
    animation: animate 2.5s linear infinite;
}
body.signup .container::before
{
    filter: hue-rotate(140deg);
}
@property --a
{
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}
@keyframes animate
{
    0%
    {
       --a: 0deg
    }
    100%
    {   
       --a: 360deg
    }
}
.container span
{
    position: absolute;
    inset: 5px;
    overflow: hidden;
    border-radius: 15px;
}
.container span::before
{
    content:'';
    position: absolute;
    inset: 5px;
    background: url(bg1.jpg);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    filter: blur(10px);
}
.container span::after
{
    content:'';
    position: absolute;
    inset: 5px;
    background: url(bg1.jpg);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    filter: blur(15px);
}
body.signup .container span::before,
body.signup .container span::after
{
    background: url(bg2.jpg);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    filter: blur(15px);
}
form
{
    position: absolute;
    left:0;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    width:100%;
    gap:15px;
    transition: 0.5s;   
}
form#signupForm
{
    left: 100%;
}
body.signup form#signinForm 
{
   left: -100%;
}
body.signup form#signupForm 
{
   left: 0;
}
form h2
{
    position: relative;
    color:#757575;
    font-size:1.5em;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 10px;
}
form .inputBox 
{
    position: relative;
    width: 70%;
    display: flex;
    justify-content: space-between;
}
form .inputBox a
{
    color: #fff;
    text-decoration:none;
    font-size:0.85em;
}
form .inputBox a:nth-child(2)
{
    text-decoration:underline;
}
form .inputBox input 
{
    width: 100%;
    outline: none;
    border: 1px solid rgba(255,255,255,0.25);
    background: rgba(0,0,0,0.15);
    padding:6px 15px;
    border-radius: 4px;
    font-size: 0.85em;
    color:#fff;
}
form .inputBox input::placeholder
{
    color: rgba(255,255,255,0.5);
}
form .inputBox input[type="submit"]
{
    background:#2196f3;
    font-weight: 500;
    cursor: pointer;
}
form#signupForm .inputBox input[type="submit"]
{
    background:#3edaf1; 
}
form#signupForm b
{
    font-weight: 500;
    color: #ffeb3b;
    text-decoration: underline;
}