:root {
  --base: #fff;
  --zebra: #dfdfdf;
  --inverted: #222;
  --interactive: #5ee9ae;
  --interactive--darker: #19b373;
  --danger: #f00;
  --shadow: rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

html {
  background-color: var(--base);
}

body {
  font-size: clamp(5mm, 3vmin, 8mm);
  font-family: Arial, Helvetica, sans-serif;
  padding: 4vmin;
}

a:not(.bookmarklet) {
  color: var(--interactive--darker);
  font-weight: 600;
}

a:not(.bookmarklet):hover {
  background-color: var(--interactive);
  box-shadow: 0.1em 0 0 var(--interactive), -0.1em 0 0 var(--interactive);
  color: var(--inverted);
  text-decoration: none;
}

header {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: start;
}

header img {
  width: clamp(100px, 100vw, 300px);
}

@keyframes outline-crawl {
  from {
    outline-offset: 0;
  }
  to {
    outline-offset: 10px;
  }
}

.bookmarklet {
  position: relative;
  background-color: var(--inverted);
  color: #fff;
  padding: 5px 10px;
  border-radius: 0.2em;
  text-decoration: none;
  font-size: 3rem;
  display: inline-block;
  margin: 0 auto;
  border: dashed 4px var(--interactive);
  animation: outline-crawl 2s linear infinite;
  margin: 0.3em 0;
}
.bookmarklet:after {
  content: 'Drag me to your bookmarks toolbar!';
  display: inline-block;
  position: absolute;
  top: -1em;
  right: 0.5em;
  padding: 0.1em 0.5em;
  border-radius: 0.2em;
  font-size: 1rem;
  font-weight: 700;
  font-style: italic;
  color: var(--inverted);
  background-color: var(--interactive);
}

.dropzone {
  display: flex;
  background-color: var(--interactive);
  border: dashed 2px var(--inverted);
  border-radius: 5px;
  padding: 5px 10px;
  margin: 5px 0;
}

.letter {
  max-width: 100%;
  border: solid 2px var(--inverted);
  border-radius: 5px;
  padding: 5px 10px;
  margin: 5px 0;
  box-shadow: 5px 5px 1px var(--shadow);
  transform: rotate(1deg);
}

.fine-print {
  font-size: 0.75rem;
}

.bigbreak {
  height: 50vh;
}

@media screen and (max-width: 780px) {
  header,
  .dropzone {
    flex-direction: column;
  }
}

.hidden {
  display: none;
}