body {
  background-color: var(--color-background-page);
  color: var(--color-text);

  font: normal 400 1rem/1.25rem "IBM Plex Sans", sans-serif;

  margin: 1em;

  @media screen and (min-width: 50rem) {
    margin: 2em;
  }

  @media screen and (min-width: 80rem) {
    margin-left: 15%;
    margin-right: 15%;
  }
}

.page {
  display: flex;
  flex-direction: column;
  gap: 1em;
}
  
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Overpass", sans-serif;
  font-weight: 700;
  font-style: normal;
}

/* dl dt { */
  /* font-size: 1.25em; */
  /* font-weight: 500; */
/* } */

hr {
  margin: 1em 0 1em 0;
}

header.main {
  background-color: var(--color-background-header);
  color: var(--color-header-text);
  border: var(--border-header);
  border-radius: var(--border-radius-header);

  padding: var(--padding-sign);

  box-shadow: var(--shadow-header);

  text-align: center;

  height: min-content;

  h1, h4 {
    line-height: 1em;
  }
}

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

svg.interchange-piece {
  height: var(--size-interchange-graphic);
  width: var(--size-interchange-graphic);
}

svg.icon {
  height: 1em;
  width: 1em;
  vertical-align: middle;
  fill: currentColor;
}

svg.icon-compass {
  height: 1.25em;
  width: 1.25em;

  &.north {
    transform: rotate(-45deg);
  }
  &.south {
    transform: rotate(135deg);
  }
  &.east {
    transform: rotate(45deg);
  }
  &.west {
    transform: rotate(225deg);
  }
}

h2 > svg.icon {
  display: inline;
  height: 1.25em;
  width: 1.25em;
}

h3 > svg.icon {
  display: inline;
}

svg.shield {
  height: 3em;
  fill: green;
}

.sign {
  border: var(--border-sign);
  border-radius: var(--border-radius-sign);
  box-shadow: var(--shadow-sign);
  color: var(--color-sign);
  background-color: var(--color-navigation);
}

nav.sign {
  display: flex;
  align-items: center;
  color: var(--color-nonwhite-sign);

  font-family: "Overpass", sans-serif;

  padding: 0.5em 1em 0.5em 1em;
  
  > .breadcrumb-link {
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    flex-basis: 50%;
  }

  > a.breadcrumb-link:hover {
    text-decoration: underline;
  }

  > ul {
    display: none;
  }

  > h4 {
    text-align: right;
    flex-basis: 50%;
  }

  @media screen and (min-width: 50rem) {
    > a.breadcrumb-link {
      flex-basis: 20%;
    }

    > ul {
      flex-basis: 60%;
      list-style: none;

      display: flex;
      justify-content: center;
      padding-left: 0;
      gap: 0.75em;
    
      li {
        display: inline-block;

        a {
          color: #ffffff;
          text-decoration: none;
        }

        a:hover {
          text-decoration: underline;
        }
      }
    }

    > h4 {
      flex-basis: 20%;
    }
  }
}

section.sign {
  border: var(--border-white-sign);
  border-radius: var(--border-radius-sign);
  box-shadow: var(--shadow-sign);
  color: var(--color-sign);
  background-color: var(--color-background-sign);
  
  padding: var(--padding-sign);

  h2 {
    padding: 0.25em;
    color: white;
    width: max-content;
    border-radius: var(--border-radius-sign);
    /* margin-bottom: 0.5em; */

    &.destinations {
      background-color: var(--color-navigation);
    }

    &.junctions {
      background-color: var(--color-guide);
      border: var(--border-white-sign);
      color: black;
    }

    &.numbering-system {
      background-color: var(--color-information);
    }

    &.traffic-flow {
      background-color: var(--color-construction);
      border: var(--border-white-sign);
      color: black;
    }

    &.landmarks {
      background-color: var(--color-landmark);
      @media screen and (max-width: 50rem) {
        overflow: auto;
      }
    }
  }
}

header.sign-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--margin-sign-header);

  > h2 {
    flex-basis: max-content;
  }

  &.traffic-flow-header {
    > input[type="button"] {
      margin-left: auto;
      flex-basis: max-content;
    } 
  }
}

nav.incidents {
  display: grid;
  gap: 1em;

  grid-template-columns: [start] 0.75fr 4fr [end];

  > h4 {
    grid-column: span 2;
  }

  a.incident {
    display: grid;
    grid-template-columns: subgrid;

    grid-column: span 2;

    color: var(--color-sign-link);
    text-decoration: none;

    :hover {
      text-decoration: underline;
    }

    > span {
      grid-column: span 1;
      
      color: var(--color-construction);
      text-align: right;
    }

    > dl {
      grid-column-start: 2;
    }
  }
}

footer {
  color: var(--color-footer);
  grid-row: 3;

  display: flex;
  flex-direction: column;
  gap: 1em;

  input[type="checkbox"] {
    text-align: right;
    accent-color: var(--color-navigation);
  }
  
  @media screen and (min-width: 50rem) {
    flex-direction: row;
    gap: 0;
    
    p {
      flex: 80%;
    }

    input[type="checkbox"] {
      flex: 20%;
    }
  }
}