:root {
    --umit: 40px;
    --marg: 12px;
    --t: 0.5s;
    --bpx: 0px;
    --bg: #7de8df;
    --accent: #a8db18;
}

html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    overflow: auto;
}

.inner {
    display: flex;
    align-items: center;
}

.text {
    white-space: nowrap;
    display: flex;
    align-items: center;
    padding-right: calc(2 * var(--marg));
}

.icon {
    width: calc(var(--umit) - 2 * var(--bpx));
    height: calc(var(--umit) - 2 * var(--bpx));
    display: flex;
    align-items: center;
    justify-content: center;
}

.outer {
    display: flex;
    width: var(--umit);
    height: var(--umit);
    overflow: hidden;
    transition: var(--t);
    margin: var(--marg);
    border-radius: 1000px;
    border: var(--bpx) solid rgba(0, 0, 0, 0);
    box-shadow: inset 0px 3px 3px 1px rgba(0, 0, 0, 0.08), inset 0px -1px 2px 1px rgba(255, 255, 255, 0.45);
    cursor: pointer;
}

* {
    flex-shrink: 0;
}

#container {
    display: inline-flex;
    position: relative;
    border-radius: 1000px;
    box-shadow: inset 0px -2px 5px 0 rgba(0, 0, 0, 0.1), inset 0px 2px 5px 0 rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.2);
}

#container::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 10px;
    border-radius: 100%;
    bottom: 0px;
    box-shadow: 0 40px 20px 3px rgba(0, 0, 0, 0.13);
    transform: scaleX(1.05);
}

.highlight {
    height: var(--umit);
    width: var(--umit);
    position: absolute;
    z-index: 1;
    background: var(--accent);
    margin-top: var(--marg);
    left: var(--marg);
    transition: var(--t);
    border-radius: 1000px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: inset 0 -5px 8px 0 rgba(0, 0, 0, 0.2), inset 0 5px 8px 0 rgba(255, 255, 255, 0.5), 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

.selected {
    width: initial;
}

.inner {
    position: relative;
}

.active .inner {
    z-index: 2;
}

* {
    font-family: "Heebo", sans-serif;
    color: white;
    font-weight: 700;
    box-sizing: border-box;
}

.icon {
    color: rgba(0, 0, 0, 0.4);
    font-weight: 900;
}

.text {
    text-shadow: 0 1px rgba(0, 0, 0, 0.4);
}

.outer:not(.active) .text {
    visibility: hidden;
}

.message {
    display: none;
    font-size: 3vw;
    color: white;
    text-align: center;
}

/* Media Queries for Responsiveness */
@media (max-width: 700px) {
    #container {
        display: none;
    }

    .message {
        display: block;
    }
}