:root {
  --bg: #2d2d2d;
  --mid: #666666;
  --fg: #d3d0c8;
  --link: #5d89b5;
  --hilight: #5d89b5;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: "IBM Plex Sans", "Roboto", "Fira Sans", sans-serif;
}

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

pre {
  font-family: "IBM Plex Mono", "JetBrains Mono", "Fira Code", monospace;
}

.gui {
  width: 100%;
  height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.gui > textarea {
  width: 80%;
  height: 100%;
  padding: 0.5em;
  background-color: var(--bg);
  color: var(--fg);
  border-color: var(--mid);
}
.gui > .buttons {
  margin-top: 1em;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.gui > .buttons > #submit-paste {
  margin-right: 0.5em;
}
.gui > .buttons > p {
  margin: 0;
  margin-right: 0.25em;
}
.gui > .buttons > .file-area-outer {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 25vw;
  margin-top: 0.25em;
}
.gui > .buttons > .file-area-outer > #submit-file {
  margin-top: 0.75em;
}
.gui > .buttons > .file-area-outer > .file-area {
  width: 100%;
  position: relative;
  margin-top: 0.5em;
}
.gui > .buttons > .file-area-outer > .file-area input[type=file] {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
  cursor: pointer;
}
.gui > .buttons > .file-area-outer > .file-area input[type=file]:valid + .file-dummy {
  border-color: var(--hilight);
}
.gui > .buttons > .file-area-outer > .file-area input[type=file]:valid + .file-dummy .success {
  display: inline-block;
}
.gui > .buttons > .file-area-outer > .file-area input[type=file]:valid + .file-dummy .default {
  display: none;
}
.gui > .buttons > .file-area-outer > .file-area .file-dummy {
  width: 100%;
  padding: 3.125em 0;
  margin-right: 1.25em;
  border: 0.125em dashed var(--mid);
  background-color: var(--bg);
  text-align: center;
  transition: border-color 0.25s ease-in-out;
}
.gui > .buttons > .file-area-outer > .file-area .file-dummy .success {
  display: none;
}
.gui > .buttons > .file-area-outer > .file-area:hover .file-dummy {
  border: 0.125em dashed var(--hilight);
}