:root {
  /* primary */
  --primary-100: hsl(244, 100%, 94%);
  --primary-200: hsl(243, 100%, 87%);
  --primary-300: hsl(243, 100%, 81%);
  --primary-400: #837dff;
  --primary-500: hsl(243, 100%, 68%);
  --primary-600: #504acc;
  --primary-700: #3c3799;
  --primary-800: #282566;
  --primary-900: hsl(244, 48%, 14%);
  /* grey */
  --grey--50: #f8fafc;
  --grey--100: #f1f5f9;
  --grey--200: #e2e8f0;
  --grey--300: #cbd5e1;
  --grey--400: #94a3b8;
  --grey--500: #64748b;
  --grey--600: #475569;
  --grey--700: #334155;
  --grey--800: #1e293b;
  --grey--900: #0f172a;

  --black: #222;
  --white: #fff;
  --red-light: #f8d7da;
  --red-dark: #842029;
  --green-light: #d1e7dd;
  --green-dark: #0f5132;

  /* fonts */

  --smallText: 0.7em;

  /* misc vars */
  --backgroundColor: var(--grey--50);
  --textColor: var(--grey--900);
  --borderRadius: 0.25rem;
  --letterSpacing: 1px;
  --transition: 0.2s ease-in-out all;
  --max-width: 1200px;
  --fixedWidth: 600px;

  /* box shadow */
  --shadow-1: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-2: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-3: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-4: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);
}

p {
  font-size: 1.25rem;
}

/* book set overview info */

.overview-chart {
  text-align: center;
}

.overview-chart h2 {
  padding-top: 4rem;
  font-size: 5rem;
}

.overview-chart img {
  padding: 2rem;
  max-width: 1000px;
  margin: 0 auto;
  object-fit: contain;
  height: 700px;
}

.overview-text {
  max-width: 900px;
  padding: 2rem;
  margin: 0 auto;
  columns: 2;
  column-gap: 2rem;
}

.category-chart {
  text-align: center;
}

.category-chart h2 {
  padding-top: 4rem;
  font-size: 5rem;
}

.category-img {
  padding: 2rem;
  max-width: 1000px;
  margin: 0 auto;
  object-fit: contain;
  height: 400px;
}

/* specific book info */

.container {
  padding: 2rem 2rem;
  display: grid;
  justify-items: center;
}

.card {
  display: grid;
  /* width: 100vw; */
}

.book-info {
  text-align: center;
  margin-top: 2rem;
}

.book-title {
  font-size: 3rem;
}

.book-subtitle {
  font-size: 1.2rem;
}

.book-author {
  font-size: 1rem;
}

.buy-links {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  font-size: 2rem;
  padding: 0 50px;
}

.buy-links a {
  transition: var(--transition);
  background-color: var(--primary-100);
  border-radius: 50%;
  padding: 0.75rem;
}

.buy-links:visited {
  color: var(--primary-500);
}

.buy-links a:hover {
  transform: scale(1.2);
  background: var(--white);
  color: var(--primary-500);
}

/* dynamic layout */
@media screen and (max-width: 768px) {
  .book-img {
    margin: 0 auto;
    max-width: 50vw;
  }

  
}

@media screen and (min-width: 768px) {

  .book-info {
    margin-top: 0rem;
  }

  .card {
    grid-template-columns: 1fr 1fr;
    margin-top: 4rem;
    align-items: center;
    position: relative;
  }

  .book-img {
    
    margin-right: 2rem;
  }

  .book-img img {
    border-radius: var(--borderRadius);
    position: relative;
    box-shadow: var(--shadow-4);
    width: 270px;
    margin-left: 100px;
  }

  .book-img::before {
    margin-left: 100px;
    content: "";
    position: absolute;
    border: 1rem solid var(--primary-600);
    border-radius: var(--borderRadius);
    width: 270px;
    height: 100%;
    left: -2.5rem;
    top: -2.5rem;
  }

  .book-synopsis {
    margin-top: 2rem;
    max-width: 992px;
    columns: 2;
    column-gap: 2rem;
  }

  .overview-text {
    columns: 3;
  }
}