@layer components {
  .correspondence {
    display: grid;
    grid-template-columns: minmax(16rem, 22rem) 1fr;
    gap: var(--block-space);
    align-items: start;
    margin-block-end: var(--block-space-double);

    @media (width < 60rem) {
      grid-template-columns: 1fr;
    }
  }

  .correspondence__list {
    margin: 0;
    padding: 0;
    list-style: none;
    max-block-size: 40rem;
    overflow-y: auto;
    border: 1px solid var(--color-rule);
    border-radius: var(--radius);
  }

  .correspondence__entry {
    border-block-end: 1px solid var(--color-rule);

    &:last-child {
      border-block-end: 0;
    }

    & a {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: var(--block-space-quarter) var(--block-space-half);
      padding: var(--card-padding);
      color: var(--color-ink);
      text-decoration: none;
      transition: background-color 120ms;

      &:hover {
        background: var(--color-shade);
      }

      &[aria-current] {
        background: var(--color-accent-wash);
        box-shadow: inset 3px 0 0 var(--color-accent);
      }
    }
  }

  .correspondence__who {
    font-size: var(--text-small);
    font-weight: 600;
    overflow-wrap: anywhere;
  }

  .correspondence__when {
    justify-self: end;
    font-size: var(--text-x-small);
    color: var(--color-muted);
    white-space: nowrap;
  }

  .correspondence__thread,
  .correspondence__markers,
  .correspondence__snippet {
    grid-column: 1 / -1;
  }

  .correspondence__thread {
    font-size: var(--text-x-small);
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }

  .correspondence__markers:empty {
    display: none;
  }

  .correspondence__markers {
    display: flex;
    flex-wrap: wrap;
    gap: var(--block-space-quarter);
  }

  .correspondence__snippet {
    font-size: var(--text-small);
    color: var(--color-muted);
    overflow-wrap: anywhere;
  }

  /* Without this the iframe inside sets the column's floor and the list is squeezed away. */
  .correspondence__letter {
    min-inline-size: 0;
    padding: var(--card-padding);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius);
  }
}