@import url('https://fonts.googleapis.com/css2?family=Outfit&family=Palanquin+Dark:wght@600&display=swap');

html {
    height: 100%;
}

body {
    background: linear-gradient(135deg, rgb(24, 25, 34) 2%, rgb(11, 12, 19) 58%, rgb(36, 63, 113) 100%);
}

main {
    height: 100vh;
}

.login__box {
    position: absolute;
    top: 55%;
    left: 50%;
    width: 300px;
    padding: 40px;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, .5);
    box-sizing: border-box;
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.541);
    border-radius: 10px;
}

.login__box h2 {
    margin: 0 0 30px;
    padding: 0;
    color: #fff;
    text-align: center;
}

.login__box .login__box-user {
    position: relative;
}

.login__box .login__box-user input {
    width: 100%;
    padding: 10px 0;
    color: #fff;
    margin-bottom: 30px;
    border: none;
    border-bottom: 1px solid #fff;
    outline: none;
    background: transparent;
}

.login__box .login__box-user label {
    position: absolute;
    top: 0;
    left: 0;
    padding: 10px 0;
    color: #fff;
    pointer-events: none;
    transition: .5s;
}

.login__box .login__box-user input:focus~label,
.login__box .login__box-user input:valid~label {
    top: -20px;
    left: 0;
    color: #6544b3;
    font-size: 12px;
}

.login__box form a {
    position: relative;
    display: inline-block;
    padding: 10px 20px;
    color: #6544b3;
    text-decoration: none;
    text-transform: uppercase;
    overflow: hidden;
    transition: .5s;
    margin-top: 40px;
    letter-spacing: 4px
}

.login__box a:hover {
    background: #6544b3;
    color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 5px #6544b3,
        0 0 25px #6544b3,
        0 0 50px #6544b3,
        0 0 100px #6544b3;
}

.login__box a span {
    position: absolute;
    display: block;
}

.login__box a span:nth-child(1) {
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #6544b3);
    animation: btn-anim1 1s linear infinite;
}

.login__form-label {
    font-family: 'Outfit', sans-serif;
    font-size: .9rem;
}

.login__form-titulo {
    font-family: 'Palanquin Dark', sans-serif;
    font-size: 1.3rem;
}

.login__form-submit {
    font-family: 'Palanquin Dark', sans-serif;
}

@keyframes btn-anim1 {
    0% {
        left: -100%;
    }

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

.login__box a span:nth-child(2) {
    top: -100%;
    right: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, #6544b3);
    animation: btn-anim2 1s linear infinite;
    animation-delay: .25s
}

@keyframes btn-anim2 {
    0% {
        top: -100%;
    }

    50%,
    100% {
        top: 100%;
    }
}

.login__box a span:nth-child(3) {
    bottom: 0;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg, transparent, #6544b3);
    animation: btn-anim3 1s linear infinite;
    animation-delay: .5s
}

@keyframes btn-anim3 {
    0% {
        right: -100%;
    }

    50%,
    100% {
        right: 100%;
    }
}

.login__box a span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg, transparent, #6544b3);
    animation: btn-anim4 1s linear infinite;
    animation-delay: .75s
}

@keyframes btn-anim4 {
    0% {
        bottom: -100%;
    }

    50%,
    100% {
        bottom: 100%;
    }
}

@media only screen and (min-width: 768px) {

    .login__box {
        width: 400px;
    }

}