:root {
  --primary-color-h: 192;
  --primary-color-s: 100%;
  --primary-color-l: 41%;
  --primary-color: hsl(
    var(--primary-color-h),
    var(--primary-color-s),
    var(--primary-color-l)
  );
  --primary-color--dark: hsl(
    var(--primary-color-h),
    var(--primary-color-s),
    calc(var(--primary-color-l) - 30%)
  );
}

body {
  font-size: 16px;
  margin: 0;
}

a {
  color: white;
}

header, footer {
  padding: 1em;
  height: 10vh;
  color: white;
  background-color: var(--primary-color);
  justify-content: center;
  display: grid;
}

.container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 80vh;
}

.drop {
  width: 100%;
  height: 100%;
  background-color: #eee;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease-in-out;
  font-family: sans-serif;
  padding: 4px;
  flex-direction: column;
}

.hidden {
  display: none;
}

img,
embed {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

textarea {
  width: 100%;
  height: 100%;
  padding: 0 1em;
}

.action {
  padding: 1em;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

button {
  width: 100px;
  padding: 5px;
  font-weight: bold;
  background-color: var(--primary-color);
  border: none;
  color: white;
}

@media (max-width: 450px) {
  .container {
    grid-template-columns: 1fr;
  }

  .action {
    grid-template-columns: 1fr;
  }
}