.fef-button {
    --duration: 4000;
    --success: #1ABC9C;
    --grey-light: #A8B6C8;
    --grey: #3498DB;
    --grey-dark: #2C3E50;
    --light: #E3F2FD;
    --shadow: rgba(18, 22, 33, .6);
    --shadow-dark: rgba(18, 22, 33, .85);
    display: block;
    text-decoration: none;
    perspective: 500px;
}

.fef-button>div {
    position: relative;
    background: var(--light);
    border-radius: 5px;
    overflow: hidden;
    display: flex;
    padding: 16px 24px;
    box-shadow: 0 4px 12px var(--shadow);
}

.fef-button>div .icon {
    --color: var(--grey);
    margin-right: 12px;
    position: relative;
    transform: translateZ(8px);
}

.fef-button>div .icon div {
    overflow: hidden;
    position: relative;
    width: 20px;
    height: 22px;
}

.fef-button>div .icon div:before,
.fef-button>div .icon div:after {
    content: "";
    position: absolute;
    width: 2px;
    height: 2px;
    top: 2px;
    transition: opacity 0.3s ease;
}

.fef-button>div .icon div:before {
    left: 6px;
    background-image: radial-gradient(circle at 0 100%, var(--color) 2px, #fff 0px);
}

.fef-button>div .icon div:after {
    right: 6px;
    background-image: radial-gradient(circle at 100% 100%, var(--color) 2px, #fff 0px);
}

.fef-button>div .icon div svg {
    width: 20px;
    height: 18px;
    display: block;
    margin-top: 2px;
    position: relative;
    z-index: 1;
}

.fef-button>div .icon div svg.arrow {
    color: #fff;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 2;
    transform: translateY(-1px);
}

.fef-button>div .icon div svg.shape {
    color: var(--color);
    transition: color 0.4s ease;
}

.fef-button>div .icon span {
    --s: 1;
    position: absolute;
    left: 1px;
    right: 1px;
    bottom: 2px;
    background: var(--color);
    height: 6px;
    border-radius: 50%;
    display: block;
    transform: translateY(0) scale(var(--s));
}

.fef-button>div .label {
    --color: var(--grey-dark);
    line-height: 22px;
    font-size: 16px;
    font-weight: 500;
    color: var(--color);
    position: relative;
    transition: color 0.4s ease;
    transform: translateZ(8px);
}

.fef-button>div .label>div {
    display: flex;
    transition: opacity 0.25s ease;
}

.fef-button>div .label>div:not(.show) {
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
}

.fef-button>div .label>div.hide {
    opacity: 0;
}

.fef-button>div .label>div .counter {
    overflow: hidden;
    display: flex;
    height: 18px;
    line-height: 18px;
    margin: 2px 0;
    position: relative;
    transition: opacity 0.3s ease;
}

.fef-button>div .label>div .counter:before,
.fef-button>div .label>div .counter:after {
    content: "";
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 1;
}

.fef-button>div .label>div .counter:before {
    top: 0;
    background: linear-gradient(to bottom, white 0%, rgba(255, 255, 255, 0) 100%);
}

.fef-button>div .label>div .counter:after {
    bottom: 0;
    background: linear-gradient(to top, white 0%, rgba(255, 255, 255, 0) 100%);
}

.fef-button>div .label>div .counter span {
    display: inline-block;
    margin: 0 4px 0 2px;
}

.fef-button>div .label>div .counter ul {
    --y: 0;
    margin: 0;
    padding: 0;
    list-style: none;
    width: 10px;
    height: 18px;
    -webkit-backface-visibility: hidden;
    transform: translateY(var(--y)) translateZ(0);
}

.fef-button>div .label>div .counter ul:nth-child(1) {
    transition: transform calc(var(--duration) * .2ms) ease-in-out;
}

.fef-button>div .label>div .counter ul:nth-child(2) {
    transition: transform calc(var(--duration) * .8ms) ease-in-out;
}

.fef-button>div .label>div .counter ul:nth-child(3) {
    transition: transform calc(var(--duration) * .8ms) ease-in-out;
}

.fef-button>div .label>div .counter ul li {
    width: 10px;
    height: 18px;
}

.fef-button>div .label>div .counter.hide {
    opacity: 0;
}

.fef-button>div .progress {
    --s: 0;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    transform-origin: 50% 100%;
    transform: scaleY(var(--s));
    transition: transform 0.4s ease;
}

.fef-button>div .progress:before,
.fef-button>div .progress:after {
    --s: 1;
    content: "";
    background: var(--success);
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    transform-origin: 0 50%;
    transform: scaleX(var(--s));
}

.fef-button>div .progress:before {
    opacity: 0.35;
}

.fef-button>div .progress:after {
    --s: 0;
    transition: transform calc(var(--duration) * .9ms) ease-in-out;
}

.fef-button.active>div {
    animation: button calc(var(--duration) * 1ms) linear forwards;
}

.fef-button.active>div .icon div:before,
.fef-button.active>div .icon div:after {
    opacity: 0;
    transition-delay: 0.4s;
}

.fef-button.active>div .icon svg.arrow {
    animation: arrow calc(var(--duration) * .18ms) linear 4 calc(var(--duration) * .2ms);
}

.fef-button.active>div .icon span {
    animation: span calc(var(--duration) * .18ms) linear 4 calc(var(--duration) * .2ms);
}

.fef-button.active>div .label>div .counter ul:nth-child(1) {
    --y: -18px;
    transition-delay: calc(var(--duration) * .72ms);
}

.fef-button.active>div .label>div .counter ul:nth-child(2) {
    --y: -180px;
    transition-delay: calc(var(--duration) * .09ms);
    animation: motion calc(var(--duration) * .5ms) linear forwards calc(var(--duration) * .19ms);
}

.fef-button.active>div .label>div .counter ul:nth-child(3) {
    --y: -540px;
    transition-delay: calc(var(--duration) * .075ms);
    animation: motion calc(var(--duration) * .8ms) linear forwards calc(var(--duration) * .075ms);
}

.fef-button.active>div .progress {
    --s: 1;
    transition-delay: 0.4s;
}

.fef-button.active>div .progress:after {
    --s: 1;
    transition-delay: 0.4s;
}

.fef-button.done>div .icon {
    --color: var(--success);
}

.fef-button.done .label {
    --color: var(--success);
}

.fef-button.done .label .counter {
    width: 0;
}

@keyframes arrow {
    
    38% {
        transform: translateY(100%);
        opacity: 1;
    }

    39% {
        transform: translateY(100%);
        opacity: 0;
    }
    40% {
        transform: translateY(-100%);
        opacity: 0;
    }
    41% {
        transform: translateY(-100%);
        opacity: 1;
    }
    100% {
        transform: translateY(-1px);
        opacity: 1;
    }
}

@keyframes span {

    25% {
        transform: translateY(2px) scale(var(--s));
    }
    55% {
        transform: translateY(2px) scale(var(--s));
    }
    80%,
    100% {
        transform: translateY(0) scale(var(--s));
    }
}

@keyframes motion {

    20%,
    70% {
        filter: blur(0.4px);
    }
}

@keyframes button {    

    0% {
        transform: translateX(0) translateZ(0) scale(1) rotateY(0deg);
    }
    10% {
        transform: translateX(0) translateZ(0) scale(0.96) rotateY(0deg);
        box-shadow: 0 4px 8px var(--shadow-dark);
    }
    20% {
        transform: translateX(-16px) translateZ(32px) scale(1) rotateY(-16deg);
        box-shadow: 4px 12px 20px var(--shadow-dark);
    }
    85% {
        transform: translateX(16px) translateZ(32px) scale(1) rotateY(16deg);
        box-shadow: -4px 12px 20px var(--shadow-dark);
    }
    95% {
        transform: translateX(0) translateZ(0) scale(1.12) rotateY(0deg);
        box-shadow: 0 8px 24px var(--shadow-dark);
    }
    100% {
        transform: translateX(0) translateZ(0) scale(1) rotateY(0deg);
    }
}

.fef-button.done+.restart {
    opacity: 1;
    visibility: visible;
}

.restart {
    --grey-dark: #a8b5c2;
    position: absolute;
    bottom: 40%;
    left: 50%;
    transform: translateX(-50%);
    color: var(--grey-dark);
    font-size: 14px;
    line-height: 16px;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease;
}

.restart svg {
    width: 16px;
    height: 16px;
    margin-right: 4px;
    display: inline-block;
    vertical-align: top;
}

html {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

body {
    min-height: 100vh;
    font-family: Roboto, Arial;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #1B2735;
    padding: 0;
    margin: 0;
}

body .frontendfocus {
    position: fixed;
    display: block;
    right: 20px;
    bottom: 20px;
}