:root {
  color-scheme: light dark;
  --color-background: light-dark(#f8f8f8, #181818);
  --color-heading: light-dark(rgb(32, 19, 142), rgb(117, 108, 218));
  --color-text: light-dark(black, rgba(255, 255, 255, 0.7));
  --color-link: var(--color-heading);
  --color-link-hover: light-dark(rgb(19, 11, 87), rgb(98, 90, 184));
  --color-input-hover: var(--color-heading);
  --color-input-focus-visible: var(var(--color-heading));
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  font-weight: normal;
}

body {
  min-height: 100dvh;
  color: var(--color-text);
  background: var(--color-background);
  transition:
    color 0.5s,
    background-color 0.5s;
  line-height: 1.6;
  font-family: monospace;
  font-size: 16px;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

:focus-visible {
  outline: none;
}

#app {
  height: 100dvh;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
  font-weight: normal;
}

a {
  color: var(--color-link);

  &:hover,
  &:visited {
    color: var(--color-link-hover);
  }
}

button,
input {
  border: 2px solid var(--color-text);
  background-color: inherit;
  color: var(--color-text);
  border-radius: 4px;
  font-size: 1rem;
  padding: 4px;
  font-family: monospace;

  &:hover,
  &:focus,
  &:focus-visible {
    border-color: var(--color-input-hover);
  }
}

input:invalid {
  border-color: red;
}