* {
  box-sizing: border-box;
}

body {
  font-family: Sono, monospace;
  font-weight: 500;
  line-height: 1;
  max-width: 500px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px;
  border: 5px double;
}

h1,
h2,
h3 {
  font-family: 'Fira Mono', monospace;
  margin-block: 0;
}

h1,
h2 {
  color: gray;
  text-align: center;
}

h2 {
  margin-block: 24px;
}

h3 {
  margin-top: 24px;
}

section {
  border-top: 2px dashed;
  margin-block: 24px;
}

input {
  border: 2px solid;
  font-family: Sono, monospace;
}

[type='checkbox'] {
  outline: 2px solid;
}

button {
  font-family: 'Fira Mono', monospace;
  font-weight: 500;
  border: 2px solid;
  background-color: lightgray;

  &:hover {
    background-color: darkgray;
  }
}

#bookForm {
  display: flex;
  flex-flow: column nowrap;
  gap: 6px;

  div {
    display: flex;

    label {
      width: 20ch;
      height: 1lh;
      flex: 0 0 10ch;

      &[for='bookFormIsComplete'] {
        flex: 0 0 15ch;
      }
    }

    input[type='text'],
    input[type='number'] {
      width: 100%;
    }
  }
}

#searchBook {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  align-content: stretch;
  align-items: baseline;
  gap: 12px;

  input {
    flex: 1 1 auto;
  }
}

#incompleteBookList,
#completeBookList {
  div:has(> button) {
    display: flex;
    flex-flow: row wrap;
    gap: 12px;
    justify-content: flex-start;
  }
}