html,
body {
  margin: 0;
  padding: 0;
  color-scheme: light dark;
}

body {
  background: light-dark(#eee, #111);
  font-family: sans-serif;
  line-height: 1.5;
}

main {
  --main-padding: 2em;

  /* colors */
  background: light-dark(#fff, #222);
  border: 1px solid #aaa;
  border-width: 0 1px;

  /* dimensions */
  margin: 0 auto;
  max-width: 800px;
  padding: 0 var(--main-padding);
  /* overflow: auto; */

  /* display */
  min-height: 100vh;
}

h1 {
  margin: 0;
  padding: 1rem 0 0.5rem;
}

fieldset {
  border-style: none;
  outline-style: none;
  display: flex;
  align-items: center;

  @media (width <= 400px) {
    position: sticky;
    top: 0;
    margin: 0 calc(-1 * var(--main-padding));
    padding: 0.5em 0 0.5em var(--main-padding);

    background: light-dark(#fff, #222);

    .shutter {
      background-image: linear-gradient(#222, #2220);
      translate: 0 100%;
      bottom: 0;
      left: 0;
      position: absolute;
      height: 20px;
      width: 100%;
    }
  }
}

#container {
  display: flex;
  gap: 2em;
  margin: 1em auto;
  align-items: start;
  justify-content: space-around;

  @media (width <= 400px) {
    flex-direction: column;
  }
}

table {
  border-collapse: collapse;
  /* this can cause problems */
  /* overflow: hidden; */
  font-size: 1.5em;

  --radius: 4px;

  @media (width <= 400px) {
    width: 100%;
  }
}

/* table header */
thead th {
  background-color: light-dark(cornflowerblue, darkslateblue);
  padding: 4px 8px;
  text-align: right;

  &:first-child {
    border-top-left-radius: var(--radius);
  }

  &:last-child {
    border-top-right-radius: var(--radius);
  }
}

/* row coloring and borders */
tbody > tr {
  &:nth-of-type(even) > * {
    background-color: light-dark(#f3f3f3, #444);
  }

  &:nth-of-type(odd) > * {
    background-color: light-dark(#e0e0e0, #555);
  }

  &:last-child {
    > *:first-child {
      border-bottom-left-radius: var(--radius);
    }

    > *:last-child {
      border-bottom-right-radius: var(--radius);
    }
  }
}

tbody {
  th,
  td {
    font-family: monospace;
    font-weight: normal;
    text-align: right;
    padding: 2px 8px;
  }
}

tbody > tr.decimal > * {
  background-color: light-dark(pink, purple);
}

p {
  margin: 0.5em 0;
}