:root {
  /* default light theme */
  --text-color: #333;
  --lighter-text-color: #666;
  --high-contrast-color: #ccc;
  --low-contrast-color: #ddd;
  --bkg-color: #fff;
  --slider-color: #0f74fc;

  /* dark theme */
  --dark-text-color: #eee;
  --dark-lighter-text-color: #969696;
  --dark-high-contrast-color: #ccc;
  --dark-low-contrast-color:#3c3c3c;
  --dark-bkg-color: #121212;
  --dark-slider-color: #809fff;
}

@media (prefers-color-scheme: dark) {
  :root:not(.alt-theme) {
    --text-color: var(--dark-text-color);
    --lighter-text-color: var(--dark-lighter-text-color);
    --high-contrast-color: var(--dark-high-contrast-color);
    --low-contrast-color: var(--dark-low-contrast-color);
    --bkg-color: var(--dark-bkg-color);
    --slider-color: var(--dark-slider-color);
  }
}
@media (prefers-color-scheme: light) {
  :root.alt-theme {
    --text-color: var(--dark-text-color);
    --lighter-text-color: var(--dark-lighter-text-color);
    --high-contrast-color: var(--dark-high-contrast-color);
    --low-contrast-color: var(--dark-low-contrast-color);
    --bkg-color: var(--dark-bkg-color);
    --slider-color: var(--dark-slider-color);
  }
}


html, body {
	position: relative;
	width: 100%;
	height: 100%;
}

body {
  background: var(--bkg-color);
	color: var(--text-color);
	margin: 0;
	padding: 8px;
	box-sizing: border-box;
	font-family: Ubuntu, avenir next, avenir, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Cantarell, "Helvetica Neue", sans-serif;
}

main {
  margin-bottom: 8em;
}

a {
  color: var(--text-color);
  font-weight: 700;
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

a:visited {
	color: var(--lighter-text-color);
}

label {
	display: block;
}

input, button, select, textarea {
	font-family: inherit;
	font-size: inherit;
	padding: 0.4em;
	margin: 0 0 0.5em 0;
	box-sizing: border-box;
	border: 1px solid var(--high-contrast-color);
	border-radius: 2px;
}

input:disabled {
	color: var(--high-contrast-color);
}

input[type="range"] {
	height: 0;
}

button, .link-button {
  color: var(--lighter-text-color);
  font-size: 1em;
  cursor: pointer;
  background-color: var(--bkg-color);
  padding-top: 0.5em;
  border-radius: 1.2em;
  border-width: 2px;
  border-color: var(--lighter-text-color);
  border-style: solid;
  min-width: 44px;
  padding-bottom: 0.5em;
  padding-left: 1em;
  padding-right: 1em;
  margin-bottom: 1em;
  pointer-events: initial;
}

button:disabled {
	color: var(--low-contrast-color);
}

button:not(:disabled):active {
	background-color: var(--low-contrast-color);
}

button:focus {
	border-color: var(--lighter-text-color);
}

.meta-controls {
  position: absolute;
  right: 1.5em;
  top: 1.5em;
  color: var(--lighter-text-color);
  font-size: .5em;
  text-align: right;
}

.centered-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#preview-stage {
  overflow: hidden;
  position: relative;
  width: 256px;
  height: 256px;
  border-radius: 22%;
  background: linear-gradient(to bottom, hsl(209deg 40% 62%) 35%, hsl(209deg 22% 50%) 70%);
  margin-bottom: 1em;
  box-shadow:
    inset 0rem 0.25rem 1.25rem -0.15rem hsl(0deg 0% 0% / 60%),
    inset 0 -3.75rem 0.5rem -4rem hsl(208deg 21% 14% / 0%);
}
    
.inner-shine {
  margin-left: 5.5%;
  margin-top: 5%;
  border-radius: 18%;
  width: 89.25%;
  height: 95%;
  justify-content: center;
  background: linear-gradient(to bottom, hsl(210deg 31% 88% / 100%) 0%, hsl(210deg 31% 88% / 1%) 25%, hsl(210deg 31% 88% / 3%) 0%);
  filter: blur(.075rem);
}

#alt-bg-overlay {
  background: url(squared-emoji-blank.png);
  background-size: contain;
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
  opacity: .3;
}

.hidden {
  display: none;
  visibility: hidden;
}

#emoji-text {
  text-align: center;
  text-transform: uppercase;
  color: transparent;
  font-size: 10em;
  font-family: "Avenir Next Condensed", "Helvetica Neue", Ubuntu, sans-serif;
  font-weight: bold;
  line-height: 100%;
  text-shadow:
  0.01em 0.01em 0.02em #000,
  0 0 0 rgba(255, 255, 255, 0.75);
  filter: invert(1);
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
  width: 100%;
  overflow: hidden;
}

.result {
  margin-top: 2em;
}

.result img {
  margin-bottom: .25rem;
}

#result-image {
  width: 256px;
  height: 256px;
}

.form, .preview {
  width: 90%;
  max-width: 500px;
  text-align: center;
  margin:0 auto;
}

.form {
  position: relative;
  padding: 1.5rem;
  border-radius: 0.5rem;
  transition: box-shadow 0.3s cubic-bezier(0.46, 0.03, 0.52, 0.96);
}

.form.highlighted, .form.expanded {
  box-shadow: 0 0 .5rem var(--high-contrast-color);
}

.form ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items: flex-end;
}

.form ul li {
  margin: 0.5rem;
  flex: 1;
  min-width: 50%;
  transition: flex 0.5s cubic-bezier(0.46, 0.03, 0.52, 0.96);
}

.form-expander {
  font-size: 0.5rem;
  position: absolute;
  top: 0;
  right: 0;
  margin: 0.5rem;
}

.slider-subform {
  display: flex;
  align-items: center;
}

.range-label {
  margin-left: 0.5em;
  text-align: right;
  width: 4rem;
}

.slider {
  margin-bottom: 0;
  width: 100%;
  height: 2rem;
}

.form:not(.expanded) .advanced-controls {
  flex: 0;
}

.radlab, .radlab label {
  display: inline-block;
}

.radlab {
  margin: 0 2%;
}

#result-instruction {
  margin-top: 1em;
}

.preview-helpers {
  display: flex;
  flex-wrap: wrap;
}

.preview-helpers h3 {
  flex: 0 0 100%;
  text-align: center;
}

.preview-helpers > div {
  width: 45%;
  padding: 1rem 2%;
  text-align: center;
}

.preview-light {
  background-color: #F0F0F0;
  /* Round top left and bottom left. */
  border-radius: 0.25rem 0 0 0.25rem;
}

.preview-dark {
  background-color: #060606;
  /* Round top right and bottom right. */
  border-radius: 0 0.25rem 0.25rem 0;
}

footer {
  text-align: center;
  margin-bottom: 4rem;
}