@font-face {
  font-family: "Gridular-Regular";
  src: url("../fonts/Gridular-Regular.woff2") format("woff2"),
    url("../fonts/Gridular-Regular.woff") format("woff");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Sizes */
  --size-tiniest: 0.125rem;
  --size-tiny: 0.25rem;
  --size-small: 0.5rem;
  --size-normal: 1rem;
  --size-big: 2rem;
  --size-image: max(min(35vh, 18vw), 28vmin);

  /* Transitions */
  --transition-duration: 0.1s;
  --transition-function: ease-in-out;
}

html,
body,
button {
  color: var(--col-900);
  background-color: var(--col-100);
  font-family: Gridular-Regular, Tahoma, Geneva, Verdana, sans-serif;
  box-sizing: border-box;
  font-size: max(0.5em, 1.5vmin);
  margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  margin: 0;
}

img {
  object-fit: fill;
}

body,
body[theme="light"] {
  --col-100: #ffffff;
  --col-200: #f5f5f5;
  --col-300: #dddddd;
  --col-900: #000000;
  transition: color var(--transition-duration) var(--transition-function),
    background-color var(--transition-duration) var(--transition-function);
}

@media (prefers-color-scheme: dark) {
  body {
    --col-100: #111111;
    --col-200: #1b1b1b;
    --col-300: #252525;
    --col-900: #e7e7e7;
  }
}

body[theme="dark"] {
  --col-100: #111111;
  --col-200: #1b1b1b;
  --col-300: #252525;
  --col-900: #e7e7e7;
}

section {
  display: flex;
  width: 100%;
  justify-content: center;
  flex-wrap: wrap;
}

.top-bar {
  display: flex;
  padding: var(--size-small) var(--size-big);
  align-items: center;
  margin-bottom: var(--size-big);
}

.hidden,
.radio-input {
  position: fixed;
  opacity: 0;
  pointer-events: none;
}

.spacer {
  display: block;
  width: var(--size-normal);
  height: var(--size-normal);
}

.spacer-extend {
  display: block;
  width: var(--size-normal);
  height: var(--size-normal);
  margin: auto;
}

.image-box-container {
  display: inline-block;
  background-color: var(--col-200);
  padding: var(--size-normal) var(--size-normal) 0 var(--size-normal);
  margin: 0em;
  border-radius: var(--size-big);
}

.input-gridd {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  grid-template-areas:
    "r g"
    "b b";
  gap: var(--size-normal);
}

.section-element {
  margin: var(--size-small);
}

.image-input-box,
.image-display-box {
  display: block;
  height: var(--size-image);
  width: var(--size-image);
  background-color: var(--col-300);
  border-radius: var(--size-normal);
  text-align: center;
  overflow: hidden;
  outline: 0 solid black;
}

.image-input-box {
  height: var(--size-image);
  width: var(--size-image);
}

.image-display-box {
  height: calc(2 * var(--size-image) - var(--size-normal));
  width: calc(2 * var(--size-image) - var(--size-normal));
}

.image-input-box > label {
  display: block;
  height: 100%;
  width: 100%;
  position: relative;
  text-align: center;
}

.image-input-box > label > img,
.image-box-container > .image-display-box > img {
  display: block;

  height: 100%;
  width: 100%;
  aspect-ratio: 1 / 1;
  pointer-events: none;
  border-radius: var(--size-normal);
  outline: var(--col-900) solid 0px;
  outline-offset: 0px;
  transition: outline var(--transition-duration) var(--transition-function),
    outline-offset var(--transition-duration) var(--transition-function);
}

.image-input-box > label:hover > img,
.image-input-box > input:focus + label > img,
button:hover,
button:focus,
.radio-input:focus + .radio-label,
.input-group:focus-within,
.radio-label:hover {
  outline: var(--col-900) solid var(--size-tiny);
  outline-offset: calc(-1 * var(--size-tiny));
}

.image-box-container > h2 {
  text-align: center;
  margin: var(--size-small) 0 var(--size-small);
  padding: 0;
}

.image-description {
  position: absolute;
  top: 0;
  width: 100%;
  opacity: 0.75;
  transition: opacity var(--transition-duration) var(--transition-function);
}

.image-input-box > label:hover > .image-description,
.image-input-box > input:focus + label > .image-description {
  opacity: 1;
}

button,
.radio-label {
  display: inline-block;
  padding: var(--size-small) var(--size-normal);
  font-size: 1.5em;
  margin: 0;
  border: none; /* <-- Important to reset the default border */
  outline: 0em solid var(--col-900);
  color: var(--col-900);
  background-color: var(--col-100);
  border-radius: var(--size-normal);
  cursor: pointer;
  transition: outline var(--transition-duration) var(--transition-function),
    outline-offset var(--transition-duration) var(--transition-function),
    color var(--transition-duration) var(--transition-function),
    background-color var(--transition-duration) var(--transition-function);
}

button:active,
.radio-input:checked + .radio-label {
  color: var(--col-100);
  background-color: var(--col-900);
}

button:disabled {
  background-image: repeating-linear-gradient(
    45deg,
    var(--col-300) 0,
    var(--col-300) 7px,
    transparent 0,
    transparent 50%
  );
  background-size: 26px 26px;
  background-color: var(--col-100);
  outline: var(--size-tiny) solid var(--col-300);
  outline-offset: calc(-1 * var(--size-tiny));
  cursor: not-allowed;
}

.input-group {
  display: flex;
  flex-direction: row;
  outline: var(--col-900) solid 0px;
  outline-offset: calc(1 * var(--size-tiny));
  border-radius: var(--size-normal);
  transition: outline var(--transition-duration) var(--transition-function),
    outline-offset var(--transition-duration) var(--transition-function);
}

.input-group:focus-within {
  outline: var(--col-900) solid var(--size-tiny);
  outline-offset: calc(1 * var(--size-tiny));
}

.input-group > button,
.input-group > .radio-label {
  flex: 1 1 0;
  border-radius: 0;
  margin: 0 var(--size-tiniest) 0 var(--size-tiniest);
}

.input-group > button:first-of-type,
.input-group > .radio-label:first-of-type {
  border-radius: var(--size-normal) 0 0 var(--size-normal);
}

.input-group > button:last-of-type,
.input-group > .radio-label:last-of-type {
  border-radius: 0 var(--size-normal) var(--size-normal) 0;
}

.radio-label {
  padding-left: var(--size-small);
  padding-right: var(--size-small);
  text-align: center;
}
.blue-input {
  grid-area: b;
  margin: 0 25%;
}

.no-transitions,
.no-transitions *,
.no-transitions button .no-transitions .radio-label {
  --transition-duration: 0s;
  --transition-function: linear;
}

@media (prefers-reduced-motion) {
  :root {
    --transition-duration: 0s;
    --transition-function: linear;
  }
}