body {
  font-family: sans-serif;
  margin: 0;
}

h1 {
  text-align: center;
  margin-block: 2rem;

  small {
    display: block;
    margin: 0 auto;
    font-size: 1rem;
  }
}

h2 {
  margin-block: 0.5rem;
}

#legend {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-block: 2rem;
}

#container {
  display: grid;
  grid-template-columns:
    min-content 0.6rem repeat(2, minmax(25rem, 1fr));
  grid-template-rows: repeat(12, 15rem);
  column-gap: 2rem;
  row-gap: 2rem;
  padding-block: 2rem;
  overflow: visible;
}

#months {
  display: grid;
  grid-row: 1 / -1;
  grid-template-rows: subgrid;

  >div {
    padding-block: 1rem;
    text-align: center;
    writing-mode: sideways-lr;
    text-orientation: sideways;
    margin-block-end: -2rem;

    &:nth-child(2n) {
      background-color: #eee;
    }
  }
}

#line {
  position: relative;
  grid-row: 1 / -1;
  background: linear-gradient(to bottom,
      hsl(334, 89%, 42%),
      hsl(290, 80%, 45%),
      hsl(240, 100%, 50%),
      hsl(180, 100%, 50%),
      hsl(120, 100%, 50%),
      hsl(67, 88%, 40%));

  &::before,
  &::after {
    content: "";
    display: block;
    position: absolute;
    width: 1.8rem;
    height: 1.8rem;
    background-color: hsl(334, 89%, 42%);
    left: -100%;
    bottom: calc(100% - 0.6rem);
    border-radius: 50%;
  }

  &::after {
    background-color: hsl(67, 88%, 40%);
    top: calc(100% - 0.6rem);
  }
}


:where(#entries)>div,
:where(#entries)>.block-2>div {
  position: relative;
  background-color: #eee;
  border-radius: 1rem;
  padding: 1rem;
  grid-column: span 2;

  &::before {
    content: "";
    display: block;
    position: absolute;
    background-color: #eee;
    width: 2rem;
    height: 0.4rem;
    left: -2rem;
    top: 1.3rem;
  }
}

#entries {
  display: grid;
  grid-row: 1 / -1;
  grid-column: span 2;
  grid-template-rows: subgrid;
  grid-template-columns: subgrid;

  .block-2 {
    display: grid;
    background-color: transparent;
    padding: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 2rem;
  }

  .empty {
    opacity: 0;
  }

  .parallel-2 {
    grid-column: span 1;
  }

  .parallel-3 {
    grid-column: span 2;
  }

  .span-2 {
    grid-row: span 2;
  }

  .span-3 {
    grid-row: span 3;
  }

  .postpone-2 {
    margin-top: 2rem;
  }

  .prepone-2 {
    margin-bottom: 2rem;
  }

  .execution {
    display: flex;
    flex-direction: column;
    grid-row: 7 / span 3;
    grid-column: 2 / -1;
  }

  .inner {
    overflow-y: scroll;

    &>div {
      background-color: #fff;
      margin-block-end: 1rem;
      padding: 1rem;
      min-height: 4rem;
      min-width: 80%;
      border-radius: 1rem;
    }
  }
}

.period,
.responsibility {
  display: inline-block;
  margin-block-end: 0.2rem;
  color: #FFF;
  padding: 0.4rem 0.8rem;
  border-radius: 2rem;
  font-weight: 200;
  font-size: 0.8rem;
  white-space: nowrap;

}

.period {
  background-color: #1F95CC;
}

.responsibility {
  background-color: #E0860A;
}