HTMLify

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

* {
    box-sizing: inherit;
}

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

body {
    min-height: 100vh;
    font-family: "Inter", "Inter UI", Arial;
    display: grid;
    place-items: center;
    background: #151515;
    font-family: "Roboto", Arial, sans-serif;
}

.button {
    --default: rgba(255, 255, 255, .2);
    --active: #fff;
    position: relative;
    border: none;
    outline: none;
    background: none;
    padding: 0;
    appearance: none;
    -webkit-tap-highlight-color: transparent;
    cursor: pointer;
    transform: scale(var(--s, 1));
    transition: transform 0.2s;
}

.button:active {
    --s: .96;
}

.button svg {
    display: block;
    fill: none;
    stroke-width: var(--sw, 3px);
    stroke-linecap: round;
    stroke-linejoin: round;
}

.button .circle {
    width: 76px;
    height: 76px;
    transform: rotate(-90deg);
}

.button .circle circle.default {
    stroke: var(--default);
}

.button .circle circle.active {
    stroke: var(--active);
    stroke-dasharray: 227px;
    stroke-dashoffset: var(--active-offset, 227px);
    transition: stroke-dashoffset var(--all-transition, 4s) ease var(--all-delay, 0.8s);
}

.button span {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    text-align: center;
    bottom: 13px;
    font-weight: 500;
    font-size: 10px;
    color: var(--active);
    opacity: var(--count-opacity, 0);
    transform: translateY(var(--count-y, 4px));
    animation: var(--count, none) 0.3s ease forwards var(--all-delay, 4.6s);
    transition: opacity 0.2s ease 0.6s, transform 0.3s ease 0.6s;
}

.button .icon {
    --sw: 2px;
    width: 24px;
    height: 40px;
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -20px 0 0 -12px;
}

.button .icon svg.line {
    width: 4px;
    height: 37px;
    stroke: var(--active);
    position: absolute;
    left: 10px;
    top: 0;
    stroke-dasharray: 0 33px var(--line-array, 33px) 66px;
    stroke-dashoffset: var(--line-offset, 33px);
    transform: translateY(var(--line-y, 0));
    opacity: var(--line-opacity, 1);
    transition: stroke-dasharray 0.2s, stroke-dashoffset 0.2s, transform 0.32s ease var(--all-delay, 0.25s);
}

.button .icon div {
    width: 40px;
    height: 32px;
    position: absolute;
    overflow: hidden;
    left: 50%;
    bottom: 1px;
    margin-left: -20px;
    transform: translate(var(--icon-x, 0), var(--icon-y, 0));
    transition: transform 0.3s ease var(--all-delay, 4.8s);
    animation: var(--overflow, none) 0s linear forwards var(--all-delay, 4.8s);
}

.button .icon div:before,
.button .icon div:after {
    content: "";
    position: absolute;
    z-index: 1;
    height: 2px;
    left: var(--l, 0);
    top: 15px;
    width: var(--w, 16px);
    background: var(--active);
    border-radius: 1px;
    transform-origin: var(--tx, 15px) 1px;
    transform: rotate(var(--before-rotate, 0deg));
    opacity: var(--tick-opacity, 0);
    transition: transform 0.4s ease var(--all-delay, 4.8s), opacity 0s linear var(--all-delay, 4.8s);
}

.button .icon div:after {
    --l: 14px;
    --w: 26px;
    --tx: 1px;
    transform: rotate(var(--after-rotate, 0deg));
}

.button .icon div svg {
    stroke: var(--active);
}

.button .icon div svg.arrow {
    width: 40px;
    height: 32px;
    opacity: var(--arrow-opacity, 1);
    transition: opacity 0s linear var(--all-delay, 1s);
}

.button .icon div svg.progress {
    width: 444px;
    height: 10px;
    position: absolute;
    left: 0;
    top: 11px;
    transform: translateX(var(--progress-x, 0));
    opacity: var(--progress-opacity, 0);
    transition: transform var(--all-transition, 4.4s) ease var(--all-delay, 0.4s), opacity 0s linear var(--all-delay, 1s);
    animation: var(--hide, none) 0s linear forwards var(--all-delay, 4.8s);
}

.button.loading:not(.reset) {
    --line-y: -36px;
    --line-array: 0;
    --line-offset: 15px;
    --active-offset: 0;
    --arrow-opacity: 0;
    --progress-opacity: 1;
    --progress-x: -400px;
    --tick-opacity: 1;
    --before-rotate: 47deg;
    --after-rotate: -46deg;
    --hide: hide;
    --overflow: overflow;
    --icon-x: 2px;
    --icon-y: 7px;
    --count-opacity: 1;
    --count-y: 0;
    --count: count;
}

.button.reset {
    --all-delay: 0s;
    --all-transition: .3s;
}

@keyframes hide {
    to {
        opacity: 0;
    }
}

@keyframes count {
    to {
        transform: translateY(4px);
        opacity: 0;
    }
}

@keyframes overflow {
    to {
        overflow: visible;
    }
}