:root {
    --control-color: #000;
    --legend-color: #000;
  }
  
  @media (prefers-color-scheme: dark) {
    :root {
      --control-color: #e0e0e0;
      --legend-color: #e0e0e0;
    }
  }

body,
html {
    height: 100%;
}

body {
    background: var(--background);
    font: normal 1em sans-serif;
    text-align: center;
    overflow: hidden;
}

legend {
    color: var(--legend-color);
}

label {
    display: block;
    line-height: 1.3em;
    padding-left: .3em;
    cursor: pointer;
}

input[type=radio] {
    margin: 0 0 0 .4em;
    padding: 0;
    cursor: pointer;
}

.pick-a-smiley {
    position: fixed;
    bottom: 0;
    right: 0;
    text-align: right;
    z-index: 1;
}

.info-popup {
    position: fixed;
    top: calc(30px + 1em);
    right: .5em;
    z-index: 2;
}

.info-popup summary {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.1em;
    height: 1.1em;
    border-radius: 50%;
    border: solid 1px var(--link-color);
    color: var(--link-color);
    font-family: Georgia, serif;
    font-style: italic;
    font-size: 2vh;
    line-height: 1;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.info-popup summary::-webkit-details-marker {
    display: none;
}

.info-popup summary:hover,
.info-popup[open] summary {
    border-color: var(--text-color);
    color: var(--text-color);
}

.info-popup p {
    position: absolute;
    top: calc(100% + .5em);
    right: 0;
    z-index: 10;
    width: min(18rem, 70vw);
    max-width: calc(100vw - 2em);
    margin: 0;
    padding: .75em 1em;
    background: var(--background);
    color: var(--text-color);
    border: solid 1px var(--background-accent);
    box-shadow: .1em .1em 0 var(--background-accent);
    font-size: .85em;
    line-height: 1.4;
    text-align: left;
}

fieldset {
    display: block;
    margin-top: 1em;
    border: 0 none;
}

fieldset.size {
    line-height: 1.8em;
}

fieldset.size legend {
    line-height: 1em;
}

input[name=size] {
    display: inline-block;
    text-align: center;
    width: 2em;
}

select,
input {
    font-size: 3vh;
    background: var(--input-background);
    color: var(--input-text-color);
}

.up,
.down {
    display: inline-block;
    position: relative;
    overflow: hidden;
    width: 1em;
    height: 1em;
    cursor: pointer;
}

.up:before,
.down:before {
    content: " ";
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    width: .5em;
    height: .5em;
    margin: auto;
    border: solid .3em;
    transform: rotate(45deg);
}

.up:before {
    top: .5em;
    border-color: var(--control-color) transparent transparent var(--control-color);
}

.down:before {
    bottom: .2em;
    border-color: transparent var(--control-color) var(--control-color) transparent;
}

legend {
    font-weight: bold;
    font-size: 4vh;
    padding: .1em 0;
}

.smiley {
    display: block;
    position: relative;
    top: 1rem;
    margin: 0 auto;
    z-index: 0;
}