:root {
  --main-color: #2a7fffff;
  --main-color-dark: #286bcfff;
  --main-color-pale: #90bbffff;
  --bg: #f7f7f7ff;
  --bg-up: white;
  --bg-up-up: #dbdbdb;
  --contrasted: black;
}

body {
  font-family: sans-serif;
  background-color: var(--bg);
  color: var(--contrasted);
  padding: 1rem;
  margin: 0;
}

@media (min-width: 600px) {
  body {
    padding: 2rem;
  }
}

* {
  transition: all 0.3s ease;
  @starting-style {
    opacity: 0;
  }
}

*:focus {
  box-shadow: 0 0 0 3px var(--main-color-pale);
  outline: none;
}

button,
input::file-selector-button {
  background-color: var(--main-color);
  color: white;
  border-radius: 2rem;
  padding: 0.5rem;
  border: none;
}

input::file-selector-button {
  display: none;
}

button:hover:enabled {
  background-color: var(--main-color-dark);
}

button:active:enabled {
  background-color: var(--main-color-dark);
}

button:disabled {
  opacity: 0.5;
}

a {
  color: var(--main-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

fieldset {
  border-radius: 1rem;
  border-style: none;
  background-color: var(--bg-up);
}

legend {
  font-weight: bold;
  font-size: 1.5rem;
  width: 100%;
  margin: .5em 0;
  float: left;
}

input,
select,
textarea {
  border: solid 1px #ccccccff;
  border-radius: .25rem;
  padding: .25rem .25rem .1rem .25rem;
  font-family: sans;
}

@media (prefers-color-scheme: dark) {

  :root {
    --bg: black;
    --bg-up: #1a1a1aff;
    --bg-up-up: #3c3c3c;
    --contrasted: white;
  }

  *:focus {
    box-shadow: 0 0 0 3px var(--main-color-dark);
  }

  input,
  select,
  textarea {
    border: solid 1px #262626ff;
    background-color: #1a1a1aff;
    color: white;
  }

  fieldset,
  input {
    background-color: #1a1a1aff;
  }

}