/* Variables */

:root {
  --color-focus: #888833;

  --width-close-button: 4rem;

  --font-size-dog: 1.5rem;

  --spacing-beetle: 0.25rem;
  --spacing-mouse: 0.5rem;
  --spacing-cat: 1rem;
}

/* Top level */

html {
  height: 100%;
}

body {
  margin: 0;
  display: flex;
  height: 100%;
  font-family: sans-serif;
}

/* Modal */

.g-Modal {
  width: 100vw;
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 1;
}

.g-Modal__Close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  cursor: pointer;
  font-weight: bold;
  border-radius: 50%;
  border: 1px solid #EEE;
  background-color: transparent;
  width: var(--width-close-button);
  height: var(--width-close-button);
  font-size: 2rem;
  font-family: monospace;
}

.g-Modal__Close:hover, .g-Modal__Close:focus {
  background-color: #EEE;
}

.g-Modal__Content {
  position: relative;
  background-color: white;
  width: 50%;
  height: 50%;
  border-radius: 0.2rem;
  border: 1px solid #EEE;
  padding: 2rem;
  padding-right: calc(2rem + var(--width-close-button) + 2rem);
}

/* Filters */

aside {
  background-color: #333;
  color: white;
  width: 200px;
  overflow-y: auto;
}

ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
}

.g-FilterTitle {
  padding: 0.5rem 1rem;
  background-color: #555;
  border-left: 8px solid transparent;
  font-weight: bold;
}

.g-Filter--Unselected {
  border-left: 8px solid #555;
}

.g-Filter--Selected {
  border-left: 8px solid #883333;
}

.g-Filter button {
  border: none;
  background-color: transparent;
  color: inherit;
  cursor: pointer;
  padding: 0.5rem 1rem;
  width: 100%;
  text-align: left;
}

.g-Filter button:hover {
  background-color: var(--color-focus);
}

/* Books */

main {
  width: 100%;
  padding: 1rem;
  overflow-y: auto;
}

header {
  display: flex;
  font-size: 120%;
  margin-bottom: 1rem;
}

.g-Search {
  margin-right: 1rem;
}

.g-Books {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  grid-gap: 1rem;
}

.g-Book {
  align-self: center;
  border: 1px solid #DDDDDD;
  padding: 0;
  width: fit-content;
}

.g-Book:hover, .g-Book:focus {
  cursor: pointer;
  outline: none;
}

.g-Book:hover .g-Book__Image, .g-Book:focus .g-Book__Image {
  transform: scale(105%);
  opacity: 0.9;
}

.g-Book__Image {
  display: flex;
  width: 13rem;
  transition: all 0.2s ease-in-out;
}

/* Book detail */

.g-BookDetail {
  display: flex;
  justify-content: space-between;
}

.g-BookDetail img {
  width: 10rem;
}

.g-BookDetail__Title {
  font-size: var(--font-size-dog);
  margin-bottom: var(--spacing-beetle);
}

.g-BookDetail__Subtitle {
  font-style: italic;
  margin-bottom: var(--spacing-beetle);
}

.g-BookDetail__Genres {
  margin-top: var(--spacing-cat);
}