/* rem and em do NOT depend on html font-size in media queries
Instead, 1rem = 1em = 16px */

/***********************************/
/* BELOW 1264px (Smaller Desktops) */
/***********************************/

@media (max-width: 79em) {
  /* CAROUSEL */
  .wrapper,
  .wrapper--bookpage {
    max-width: 76rem;
  }

  /* FEATURES */
  .grid--features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    column-gap: 10rem;
    row-gap: 5rem;
    margin: 0 10rem;
  }

  /* FLIPCARDS */
  .flipcard-gallery {
    max-width: 80rem;
    margin: 0 auto;
  }
  .flipcard-container {
    width: 25rem;
    height: 50rem;
  }
  .flipcard-text {
    font-size: 1.4rem;
    line-height: 1.4;
  }
  .flipcard-character,
  .flipcard-book {
    font-size: 1.2rem;
  }
  .quote-text {
    font-size: 1.2rem;
  }
  .quote-character,
  .quote-book {
    font-size: 1rem;
  }
  /* MAP */
  .map {
    max-width: 80rem;
    height: auto;
  }
  .marker {
    height: 3rem;
    width: 3rem;
  }
  .marker-inside {
    height: 2.2rem;
    width: 2.2rem;
  }
  .info {
    width: 19rem;
    padding: 1.2rem;
  }
  .info-heading {
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
  }
  .info-text {
    font-size: 1rem;
    margin-bottom: 1.2rem;
  }
  .info-cover {
    width: 2.6rem;
  }
  .info-arabia {
    top: 69%;
    left: 74.5%;
  }
  .info-persia {
    top: 30%;
    left: 73%;
  }
  .info-caribbean {
    top: 43%;
    left: 25%;
  }
  .info-sahara {
    top: 66%;
    left: 37%;
  }
  .info-colorado {
    top: 27%;
    left: 6.5%;
  }
  .info-svalbard {
    top: 7%;
    left: 30%;
  }
  .info-germany {
    top: unset;
    bottom: 53%;
    left: 54%;
  }
  /* BOOK PAGES */
  .wrapper--bookpage {
    height: 90rem;
  }
  .books-container--bookpage {
    grid-auto-columns: 76rem;
    /* gap: 4rem; */
  }
  .book-item--bookpage {
    padding: 3.2rem;
  }
  .book-img--bookpage {
    width: 16rem;
    height: 24rem;
  }
  .book-text p,
  .book-stats {
    font-size: 1.6rem;
  }
  .book-stats,
  .book-text {
    padding: 1.2rem 2.4rem 1.2rem 2.4rem;
  }
  .btn--bookpage .btn {
    font-size: 1.8rem;
    font-weight: 600;
    padding: 1.2rem 2.4rem;
  }
  .btn--bookpage {
    gap: 6rem;
  }
}

/***********************************/
/* BELOW 1008px (Small Laptops) */
/***********************************/

@media (max-width: 63em) {
  /* HEADER */
  .main-nav {
    display: none;
  }
  .btn-mobile-nav {
    display: block;
    z-index: 1000;
  }
  /* FEATURES */
  .feature-icon {
    height: 2.4rem;
    width: 2.4rem;
    padding: 1.2rem;
  }
  /* QUOTES */
  .quotes-gallery {
    grid-template-columns: repeat(1, 1fr);
    gap: 3rem;
    margin: 0 4rem;
  }
  .quotes-item {
    gap: 3rem;
  }
  .quote-text {
    font-size: 1.6rem;
  }
  .quote-character,
  .quote-book {
    font-size: 1.2rem;
  }
  .quotes-item-left {
    order: 1;
  }
  .quotes-item-right {
    order: 2;
  }
}

/***********************************/
/* BELOW 864px (Tablets) */
/***********************************/

@media (max-width: 54em) {
  /* BOOKS */
  .wrapper {
    max-width: 36rem;
  }
  /* FEATURES */
  .grid--features {
    column-gap: 4rem;
    padding: 0rem;
  }
  .feature-icon {
    height: 2rem;
    width: 2rem;
    padding: 1rem;
  }
  /* QUOTES */
  .container-quotes {
    padding: 0 1rem;
  }
  .quotes-gallery {
    gap: 2rem;
    margin: 0 1rem;
  }
  .quotes-item {
    gap: 1rem;
  }
  .quote {
    padding: 1rem;
  }
  .quote-text {
    font-size: 1.6rem;
  }
  .quote-character,
  .quote-book {
    font-size: 1.2rem;
  }
  /* FLIPCARDS */
  .flipcard-img {
    -webkit-filter: grayscale(0);
    filter: grayscale(0);
  }
  .flipcard-gallery {
    grid-template-columns: repeat(1, 1fr);
    row-gap: 6rem;
  }
  .flipcard-container {
    width: 36rem;
    height: 66rem;
  }
  .flipcard-text {
    line-height: 1.6;
    font-size: 1.6rem;
  }
  .flipcard-character,
  .flipcard-book {
    font-size: 1.6rem;
  }
  /* MAP */
  .map {
    max-width: 60rem;
    height: auto;
  }
  .marker {
    height: 2.2rem;
    width: 2.2rem;
  }
  .marker-inside {
    height: 1.6rem;
    width: 1.6rem;
  }
  .info-arabia {
    top: unset;
    bottom: 25%;
    left: 37.5%;
  }
  .info-persia {
    top: unset;
    bottom: 40%;
    left: 67%;
  }
  .info-caribbean {
    top: unset;
    bottom: 28%;
    left: 25%;
  }
  .info-sahara {
    top: unset;
    bottom: 28%;
    left: 29.5%;
  }
  .info-colorado {
    top: unset;
    bottom: 41%;
    left: 6.5%;
  }
  .info-svalbard {
    top: 6.5%;
    left: 21.5%;
  }
  .info-germany {
    bottom: 45%;
    left: 21.5%;
  }
  /* FOOTER */
  .footer-nav-col {
    flex-direction: column;
    align-items: center;
    line-height: 2;
  }
  /* BOOK PAGES */
  .wrapper--bookpage {
    max-width: 60rem;
    height: 140rem;
  }
  .books-container--bookpage {
    grid-auto-columns: 60rem;
    /* gap: 4rem; */
  }
  .book-item--bookpage {
    padding: 3.2rem;
    grid-template-columns: 1fr;
    /* grid-template-rows: 2fr 4fr 1fr 1fr; */
  }
  .book-img--bookpage {
    width: 16rem;
    height: 24rem;
    margin-bottom: 2rem;
    margin-top: 2rem;
  }
  .btn--bookpage {
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }
  .book-text,
  .book-stats {
    text-align: center;
  }
}

/***********************************/
/* BELOW 656px (Small Tablets) */
/***********************************/

@media (max-width: 41em) {
  /* HEADER */
  .header {
    padding: 0 2.4rem;
  }
  .logo {
    height: 4.8rem;
    width: 4.8rem;
  }
  /* HERO */
  .heading-primary {
    font-size: 3.6rem;
  }
  .section-hero {
    padding: 4.8rem 0 4.8rem 0;
  }
  /* BOOKS */
  .section-books {
    padding: 4.8rem 0 0 0;
  }
  /* FEATURES */
  .wrapper--bookpage {
    max-width: 42rem;
    height: 142rem;
  }
  .books-container--bookpage {
    grid-auto-columns: 42rem;
  }
  .grid--features {
    margin: 0 4rem;
    column-gap: 2rem;
  }
  .feature-title {
    font-size: 1.8rem;
  }
  .feature-text {
    font-size: 1.6rem;
    line-height: 1.6;
  }
  .section-features {
    padding: 4.8rem 0;
  }
  /* AUTHOR */
  .section-author {
    padding: 4.8rem 0;
  }
  .heading-secondary {
    font-size: 3rem;
    margin-bottom: 4.8rem;
  }
  .subheading {
    font-size: 1.4rem;
    margin-bottom: 1.4rem;
  }
  .author-box {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 2fr;
  }
  .heading-tertiary {
    font-size: 2.4rem;
  }
  .author-text {
    font-size: 1.6rem;
  }
  /* QUOTES */
  .section-quotes {
    padding: 4.8rem 0;
  }
  .quotes-item {
    /* grid-template-columns: repeat(1, 1fr); */
    display: flex;
    flex-direction: column;
  }
  .quotes-item a {
    order: 1;
  }
  .quotes-item .quote {
    order: 2;
  }
  .quotes-item a,
  .quotes-item .quote {
    width: 30rem;
    height: 30rem;
  }
  /* MAP */
  .section-map {
    padding: 4.8rem 0;
  }
  .map {
    max-width: 30rem;
  }
  .info-arabia,
  .info-persia,
  .info-caribbean,
  .info-sahara,
  .info-colorado,
  .info-svalbard,
  .info-germany {
    top: 5%;
    left: unset;
    bottom: unset;
    right: 5%;
  }
  /* FOOTER */
  .footer-link .social-icon {
    height: 2rem;
    /* width: 2rem; */
  }
  .footer-heading,
  .footer-link:link,
  .footer-link:visited,
  .footer-copyright {
    font-size: 1.2rem;
  }
  .footer-logo {
    padding: 1rem;
  }
  .grid--footer {
    grid-template-columns: 1fr 6fr 8fr 4fr;
    gap: 1rem;
  }
  .footer-mail-col,
  .footer-nav-col {
    padding: 1rem;
  }
  .footer-mail-col .footer-heading {
    margin-bottom: 1rem;
  }
  .footer-copyright {
    margin: 0;
    font-size: 1rem;
  }
}

/***********************************/
/* BELOW 416px (Phones) */
/***********************************/

@media (max-width: 26em) {
  /* HERO */
  .hero {
    padding: 0 1.6rem;
  }
  .heading-primary {
    font-size: 3rem;
  }
  .btn--hero {
    gap: 2rem;
  }
  .btn:link,
  .btn:visited {
    font-size: 1.8rem;
  }
  /* BOOKS */
  .wrapper {
    max-width: 24rem;
  }
  .books-container {
    grid-auto-columns: 24rem;
  }
  .book-item {
    width: 24rem;
    height: 36rem;
  }
  .book-img {
    width: 16rem;
    height: 24rem;
  }

  /* FEATURES */
  .grid--features {
    grid-template-columns: repeat(1, 1fr);
  }
  .heading-secondary {
    font-size: 2.4rem;
  }
  .subheading {
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
  }
  /* AUTHOR */
  .author-text-box {
    padding: 2.4rem 3.2rem 3.2rem 3.2rem;
  }
  .author-text {
    font-size: 1.2rem;
  }
  /* MAP */
  .container-map {
    padding: 0 1.6rem;
  }

  /* FLIPCARDS */
  .flipcard-container {
    width: 25rem;
    height: 50rem;
  }
  .flipcard-text {
    font-size: 1.4rem;
    line-height: 1.4;
  }
  .flipcard-character,
  .flipcard-book {
    font-size: 1.2rem;
  }
  /* FOOTER */
  .grid--footer {
    grid-template-columns: 1fr 1fr 1fr;
    row-gap: 1rem;
  }
  .footer-mail-col {
    grid-column: 2 / -1;
  }
  .footer-nav-col {
    grid-column: 1 / 3;
    flex-direction: row;
  }
  .footer-logo {
    padding: 0;
  }
  .footer-mail-col,
  .footer-nav-col {
    padding: 0;
  }
  /* BOOKPAGE */
  .wrapper--bookpage {
    max-width: 34rem;
    height: 152rem;
  }
  .books-container--bookpage {
    grid-auto-columns: 34rem;
  }
  .book-item--bookpage {
    padding: 1.6rem;
    /* grid-template-rows: 2fr 5fr 1fr 1fr; */
  }
  .section-book {
    padding: 4.8rem 0;
  }
}

/*
- FONT SIZE SYSTEM (px)
10 / 12 / 14 / 16 / 18 / 20 / 24 / 30 / 36 / 44 / 52 / 62 / 74 / 86 / 98 
- SPACING SYSTEM (px)
2 / 4 / 8 / 12 / 16 / 24 / 32 / 48 / 64 / 80 / 96 / 128
*/