$primary: #2196F3;

body {
    font-family: "Open Sans", sans-serif;
    height: 100vh;
    background: url("https://i.imgur.com/HgflTDf.jpg") 50% fixed;
    background-size: cover;
}

@keyframes spinner {
    0% {
        transform: rotateZ(0deg);
    }

    100% {
        transform: rotateZ(359deg);
    }
}

* {
    box-sizing: border-box;
}

.wrapper {
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    min-height: 100%;
    padding: 20px;
    background: rgba(darken($primary,40%), 0.85);
}


.login {
    border-radius: 2px 2px 5px 5px;
    padding: 10px 20px 20px 20px;
    width: 90%;
    max-width: 320px;
    background: #ffffff;
    position: relative;
    padding-bottom: 80px;
    box-shadow: 0px 1px 5px rgba(0,0,0,0.3);
    &.loading

{
    button

{
    max-height: 100%;
    padding-top: 50px;
    .spinner

{
    opacity: 1;
    top: 40%;
}

}
}

&.ok {
    button

{
    background-color: #8bc34a;
    .spinner

{
    border-radius: 0;
    border-top-color: transparent;
    border-right-color: transparent;
    height: 20px;
    animation: none;
    transform: rotateZ(-45deg);
}

}
}

input {
    display: block;
    padding: 15px 10px;
    margin-bottom: 10px;
    width: 100%;
    border: 1px solid #ddd;
    transition: border-width 0.2s ease;
    border-radius: 2px;
    color: #ccc;
    &+ i.fa

{
    color: #fff;
    font-size: 1em;
    position: absolute;
    margin-top: -47px;
    opacity: 0;
    left: 0;
    transition: all 0.1s ease-in;
}

&:focus {
    &+ i.fa

{
    opacity: 1;
    left: 30px;
    transition: all 0.25s ease-out;
}

outline: none;
color: #444;
border-color: $primary;
border-left-width: 35px;
}
}

a {
    font-size: 0.8em;
    color: $primary;
    text-decoration: none;
}

.title {
    color: #444;
    font-size: 1.2em;
    font-weight: bold;
    margin: 10px 0 30px 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
}

button {
    width: 100%;
    height: 100%;
    padding: 10px 10px;
    background: $primary;
    color: #fff;
    display: block;
    border: none;
    margin-top: 20px;
    position: absolute;
    left: 0;
    bottom: 0;
    max-height: 60px;
    border: 0px solid rgba(0,0,0,0.1);
    border-radius: 0 0 2px 2px;
    transform: rotateZ(0deg);
    transition: all 0.1s ease-out;
    border-bottom-width: 7px;
    .spinner

{
    display: block;
    width: 40px;
    height: 40px;
    position: absolute;
    border: 4px solid #ffffff;
    border-top-color: rgba(255,255,255,0.3);
    border-radius: 100%;
    left: 50%;
    top: 0;
    opacity: 0;
    margin-left: -20px;
    margin-top: -20px;
    animation: spinner 0.6s infinite linear;
    transition: top 0.3s 0.3s ease, opacity 0.3s 0.3s ease, border-radius 0.3s ease;
    box-shadow: 0px 1px 0px rgba(0,0,0,0.2);
}

}

&:not(.loading) button:hover {
    box-shadow: 0px 1px 3px $primary;
}

&:not(.loading) button:focus {
    border-bottom-width: 4px;
}

}

footer {
    display: block;
    padding-top: 50px;
    text-align: center;
    color: #ddd;
    font-weight: normal;
    text-shadow: 0px -1px 0px rgba(0,0,0,0.2);
    font-size: 0.8em;
    a, a:link

{
    color: #fff;
    text-decoration: none;
}
}