/* VARIABLES */
:root {
  --body-bg: #f0eae2;
  --container-bg: #faf7f4;
  --brown-filter-text-color: brown;
  --redish-basic: #db7372;
  --redish-hover-and-book-name: #e25754;
}
/* FONTS */
@font-face {
  font-family: "Urbanist";
  src: url("../assets/fonts/Urbanist/Urbanist-VariableFont_wght.ttf");
}

/* reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
input,
select,
button {
  border: none;
  background-color: transparent;
}

/* base styles */
body {
  min-height: 100vh;
  background-color: var(--body-bg);
  display: flex;
  flex-direction: column;
  font-family: "Urbanist";
  font-size: 16px;
}
main {
  position: relative;
  z-index: 1;
}

.filter-container {
  display: flex;
  flex-direction: column;
  justify-content: start;
  align-items: start;
  gap: 15px;
  margin: 15px;
  background-color: var(--body-bg);
}
.search-input,
#book-genres,
#price-filtering,
.reset-all-filters {
  border: none;
  border-radius: 10px;
  padding: 10px 25px;
  background-color: var(--container-bg);
  color: var(--brown-filter-text-color);
  font-family: "Urbanist";
  font-weight: 500;
}
.search-input::placeholder {
  color: var(--brown-filter-text-color);
  font-family: inherit;
}
.books-containers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 25px;
  margin: 25px;
}
.book-box {
  display: block;
  width: 300px;
  height: 400px;
  background-color: #faf7f4;
  box-shadow: 0 0 2px var(--container-bg);
  border-radius: 20px;
  padding: 25px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateY(0);
  transition: transform 0.3s linear;
  margin: 0 auto;
}
.book-box:hover {
  transform: translateY(-10px);
  cursor: pointer;
}
.book-img {
  display: block;
  width: 150px;
  height: 230px;
  margin-bottom: 15px;
  border-radius: 7px;
  margin: 0 auto;
}
.book-name {
  text-align: center;
  color: var(--redish-hover-and-book-name);
}

.book-author-name,
.book-cost {
  text-align: start;
}
.reset-all-filters {
  background-color: var(--redish-basic);
  color: #faf7f4;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.3s linear;
}
.reset-all-filters:hover {
  background-color: var(--redish-hover-and-book-name);
}
/* loader */
.loader-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 50px auto;
  gap: 15px;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 5px solid var(--container-bg);
  border-top: 5px solid var(--redish-hover-and-book-name);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.hidden {
  display: none !important;
}

/* tablet */
@media screen and (min-width: 700px) {
  main {
    margin: 25px;
    position: relative;
    z-index: 1;
  }

  .filter-container {
    position: sticky;
    top: 0;
    z-index: 2;
    background-color: var(--body-bg);
    padding: 15px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    margin: 0 25px;
  }
  .books-containers {
    grid-template-columns: 1fr 1fr;
  }
}
/* large tablet */
@media screen and (min-width: 1000px) {
  .books-containers {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* desktop styles */
@media screen and (min-width: 1400px) {
  .books-containers {
    grid-template-columns: 1fr 1fr 1fr 1fr;
  }
}