* {
    border: var(--main-radius);
    box-sizing: border-box;
    margin: 0;
    padding: 0
}

:root {
    --hue: 223;
    --bg: hsl(var(--hue),10%,90%);
    --fg: hsl(var(--hue),10%,10%);
    font-size: calc(16px + (24 - 16) * (100vw - 320px) / (1280 - 320))
}

body,button {
    color: #000;
    font: 1em/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif
}

body {
    background-color: var(--main-bg-color);
    height: 97vh;
    display: grid;
    place-items: center
}

.progress-clock {
    display: grid;
    justify-content: center;
    align-content: center;
    position: relative;
    text-align: center;
    width: 16em;
    height: 16em
}

.progress-clock__time-date,.progress-clock__time-digit,.progress-clock__time-colon,.progress-clock__time-ampm {
    transition: color 0.2s linear;
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none
}

.progress-clock__time-date,.progress-clock__time-digit {
    background: transparent
}

.progress-clock__time-date,.progress-clock__time-ampm {
    grid-column: 1 / 6
}

.progress-clock__time-date {
    font-size: 0.75em;
    line-height: 1.33
}

.progress-clock__time-digit,.progress-clock__time-colon {
    font-size: 2em;
    font-weight: 400;
    grid-row: 2
}

.progress-clock__time-colon {
    line-height: 1.275
}

.progress-clock__time-ampm {
    cursor: default;
    grid-row: 3
}

.progress-clock__rings {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1
}

.progress-clock__ring {
    opacity: 0.1
}

.progress-clock__ring-fill {
    transition: opacity 0s 0.3s linear,stroke-dashoffset 0.3s ease-in-out
}

.progress-clock__ring-fill--360 {
    opacity: 0;
    stroke-dashoffset: 0;
    transition-duration: 0.3s
}

[data-group]:focus {
    outline: transparent
}

[data-units] {
    transition: opacity 0.2s linear
}

[data-group="d"]:focus,[data-group="d"]:hover {
    color: hsl(333,90%,55%)
}

[data-group="h"]:focus,[data-group="h"]:hover {
    color: hsl(33,90%,55%)
}

[data-group="m"]:focus,[data-group="m"]:hover {
    color: hsl(213,90%,55%)
}

[data-group="s"]:focus,[data-group="s"]:hover {
    color: hsl(273,90%,55%)
}

[data-group]:focus~.progress-clock__rings [data-units],[data-group]:hover~.progress-clock__rings [data-units] {
    opacity: 0.2
}

[data-group="d"]:focus~.progress-clock__rings [data-units="d"],[data-group="d"]:hover~.progress-clock__rings [data-units="d"],[data-group="h"]:focus~.progress-clock__rings [data-units="h"],[data-group="h"]:hover~.progress-clock__rings [data-units="h"],[data-group="m"]:focus~.progress-clock__rings [data-units="m"],[data-group="m"]:hover~.progress-clock__rings [data-units="m"],[data-group="s"]:focus~.progress-clock__rings [data-units="s"],[data-group="s"]:hover~.progress-clock__rings [data-units="s"] {
    opacity: 1
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg:hsl(var(--hue),10%,10%);
        --fg: hsl(var(--hue),10%,90%)
    }

    .progress-clock__ring {
        opacity: 0.2
    }
}