* {
  box-sizing: border-box;
  scroll-behavior: smooth;
  text-wrap: wrap;
  word-wrap: break-word;

  margin: 0;
  padding: 0;

  --padding-primary: 8%;
  --padding-secondary: 3.3rem;
  --border-radius: 5pt;

  --color-primary: #023b2f;
  --color-secondary: #41765d;
  --color-background: #F7F2F2;
  --color-background-secondary: #ebebeb;

  --font-size-text: 1.1rem;
  --font-size-smaller: 1rem;
  --font-size-large: clamp(3rem, 4rem, 4rem);
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;

  margin: 0;
  padding: var(--padding-primary);

  padding-top: 0;

  background-color: var(--color-background);
  color: var(--color-primary);

  font-family: "source-serif-4", serif;
  font-size: var(--font-size-text);
  font-optical-sizing: none;
}

main,
header {
  display: flex;
  flex-direction: column;
  gap: 5rem;
}

header img,
.logo-large {
  width: 100%;
  height: auto;
  filter: unset;
  border-radius: 0;
}

/* Typography */

h1 {
  font-size: xxx-large;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
  padding: 0;
  padding-bottom: var(--font-size-text);
  font-weight: normal;
  max-width: 80ch;
}

.large-text {
  font-size: xxx-large;
}

a,
a:visited {
  color: inherit;
  text-decoration: none;
}

a[to-elsewhere]::after {
  content: "↗";
  font-family: inherit;
  font-size: inherit;
  text-decoration: none;
}

p a,
a:hover {
  text-decoration: underline;
  text-decoration-thickness: 1pt;
}

dem {
  /* de-emphasize */
  font-weight: lighter;
}

details {
  transition: all 400ms;
}

details > summary p::after {
  /* fake link */
  content: "Saber más";

  list-style: none;
  text-decoration: underline;
  text-decoration-style: dotted;
  cursor: pointer;
  font-size: var(--font-size-medium);
  font-style: italic;
  color: var(--main-color);
}

details[open] summary p::after {
  content: "Ver menos";
}

details summary p {
  transition: all 400ms ease;
}

details[open] summary p {
  transform: skew(-10deg);
  opacity: 30%;
}

details[open] > summary p::after {
  /* fake link */
  content: "Ver menos";
}

details summary::marker {
  display: none;
  content: "";
}

details > content {
  margin-block: var(--padding-primary);
}

/* Elements */

.features {
  display: flex;
  flex-direction: row;
  gap: var(--padding-secondary);
}

@media (max-width: 650px) {
  .features {
    flex-direction: column;
  }
}

.single-item {
  display: flex;
  flex-direction: column;
  padding: var(--font-size-text);
  width: 100%;
  height: auto;
  gap: var(--font-size-text);

  border-radius: var(--border-radius);
  background-color: var(--color-secondary);
  color: var(--color-background);
  transition: all 400ms;
}

.single-item:hover {
  background-color: var(--color-primary);
  --border-radius: 10pt;
}

feature tag {
  font-variant: small-caps;
}

.single-item p,
.single-item h2 {
  padding: 0;
  margin: 0;
}

.single-item button {
  top: var(--padding-primary);

  background-color: var(--color-background);
  color: var(--color-primary);
}

.single-item img {
  width: 100%;
  height: auto;
}

nav {
  display: flex;
  align-items: center;
  gap: var(--padding-secondary);
  justify-content: space-between;
  padding-block: var(--font-size-text);
  overflow-x: scroll;
  width: 100%;

  position: sticky;
  z-index: 10000000;
  top: 0;

  background-color: var(--color-background);
  border-bottom: solid 1pt var(--color-primary);
}

nav > ul {
  display: flex;
  align-items: center;
  width: 100%;
  justify-content: space-between;
  list-style-type: none;
}

button {
  padding: 1rem;

  border-radius: var(--border-radius);
  border: solid var(--color-primary) 1pt;
  background-color: var(--color-background);
  cursor: pointer;

  font-family: inherit;
  font-size: var(--font-size-text);

  transition: all 200ms ease;
}

button:hover {
  background-color: var(--color-primary);
  border-color: var(--color-background);
  color: var(--color-background);
}

img {
  border-radius: var(--border-radius);
}

/* Book list */

.book-list {
  padding: 2rem 10vw;
}

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

.book-item {
  display: flex;
  gap: var(--font-size-text);
  padding: 1rem 0 2rem 0;
  align-items: center;
  background-color: var(--background-primary);
  border-top: 1pt solid var(--color-primary);
  transition: transform 0.3s;
}

.book-cover {
  flex: 0 0 50px;
  margin-right: 1rem;
}

.book-cover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
}

.book-info {
  display: flex;
  flex-direction: row;
  width: 100%;
  align-items: center;
  justify-content: space-between;
}

.book-info > span {
  flex: 1;
  margin-right: 1rem;
}

.book-info > span:last-child {
  flex: 0 0 auto;
  margin-right: 0;
}

.book-info h3 {
  margin: 0 0 0.5rem 0;
  font-size: var(--font-size);
}

.book-info .author {
  margin: 0;
  font-size: var(--font-size-small);
  color: var(--color-secondary);
}

.book-info .description {
  margin: 0.5rem 0;
  font-size: var(--font-size-smaller);
  color: var(--color-secondary);
}

@media (max-width: 750px) {
  .book-info {
    flex-direction: column;
    align-items: flex-start;
  }

  .book-info > * {
    padding: 0;
    margin: 0;
  }

  .book-cover {
    flex: 0 0 100px;
    margin-right: 1rem;
  }

  .book-info > span {
    margin: 0 0 1rem 0;
  }

  .book-info > span:last-child {
    align-self: flex-start;
    margin-bottom: 0;
  }
}

footer {
  border-top: solid 1pt var(--color-primary);
  margin-top: var(--padding-primary);
  padding-top: var(--font-size-text);
}

search {
  margin-block-start: var(--font-size-text);
}

search button,
.smaller {
  padding: var(--font-size-smaller);
  font-size: var(--font-size-smaller);
  color: var(--color-primary);
}

search form {
  gap: var(--font-size-smaller);
  display: flex;
  flex-direction: row;
}

search input {
  padding: var(--font-size-smaller);
  font-size: var(--font-size-smaller);
  border-radius: 5pt;
}

search input {
  font-family: inherit;
  color: var(--color-primary);
  border: 1pt solid var(--color-primary);
  background-color: var(--color-background);
}