/* Reset */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  color-scheme: dark light;
}

body {
  min-height: 100vh;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

/* Colors */

:root {
  --color-dark: #1f2123;
  --color-light: #e8e6e3;
}

:root {
  /* separated since these are used by the actual script */
  --highlight: #ddd;
  --background: #222;
}

/* Font */

body {
  font-family: Arial, Helvetica, sans-serif;
}

/* Composition */

.flex {
  display: flex;
  gap: var(--gap, 1rem);
}

.even {
  justify-content: space-between;
  align-items: stretch;
}

.col {
  flex-direction: column;
}

.grid {
  display: grid;
  gap: var(--gap, 1rem);
}

.flow > * + * {
  margin-block-start: var(--flow-space, 1rem);
}

.no-gap {
  --gap: 0px;
}

.small-gap {
  --gap: 0.5rem;
}

.section {
  padding-block-start: var(--flow-space, 1rem);
  padding-inline: calc(var(--flow-space, 1rem) / 2);
}

/* Utility */

.emphasis {
  font-size: 1.125rem;
  font-weight: 600;
}

.center {
  text-align: center;
  margin-inline: auto;
}

button {
  border-radius: 100vmax;
  padding-block: 0.25rem;
  border: 1px solid var(--highlight);
}

/* Block */

body {
  color: var(--highlight);
  background-color: var(--background);
  accent-color: var(--highlight);
  transition: accent-color 250ms, color 250ms, background-color 250ms;

  display: grid;
  grid-template-columns: 14rem 1fr 8rem;
}

body > * + * {
  border-inline-start: 1px solid var(--highlight);
}

#prevColors button {
  width: 100%;
  margin-block-end: 0.5ch;
  background-color: var(--button-bg);
  transition: background-color 100ms;
}

#prevColors button:hover {
  background-color: var(--button-bg-hover);
}

#colorSelect label {
  text-align: center;
}

#colorSelect input[type="text"] {
  border-radius: 100vmax;
  padding-inline: 1rem;
  text-align: center;
  border: 1px solid var(--highlight);
  min-width: 0px;
}

#colorSelect input[type="color"] {
  flex: 0 0 2rem;
}

#sidebar select:disabled {
  display: none;
}

.fn-fraction > *:first-child {
  padding-bottom: 2px;
  border-block-end: 1px solid var(--highlight);
}