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

/**************************/
/* BELOW 1344px (Smaller desktops) */
/**************************/

@media (max-width: 84em) {
  .hero {
    max-width: 120rem;
  }

  .heading-primary,
  .heading-primary-2 {
    font-size: 4.4rem;
  }
  .home-bg-img {
    left: 0;
    width: 51%;
  }
}

/**************************/
/* BELOW 1200px (Landscape Tablets) */
/**************************/

@media (max-width: 75em) {
  html {
    /* 9px / 16px  */
    font-size: 56.25%;
  }
  .grid {
    column-gap: 4.8rem;
    row-gap: 6.4rem;
  }

  .heading-secondary {
    font-size: 3.6rem;
  }

  .heading-tertiary {
    font-size: 2.4rem;
  }

  .header {
    padding: 2.4 3.2rem;
  }

  .main-nav-list {
    gap: 3.2rem;
  }

  .hero {
    gap: 4.8rem;
  }
}

/**************************/
/* BELOW 944px (Tablets) */
/**************************/

@media (max-width: 59em) {
  html {
    /* 8px / 16px = 0.5 = 50% */
    font-size: 50%;
  }

  .section-hero {
    padding: 4.8rem 0;
  }

  .hero {
    display: grid;
    grid-template-columns: 1fr 2fr;
    padding: 0.8rem;
    gap: 6.4rem;
  }

  .border-mid-line {
    width: 70%;
  }
  .hero-img-box {
    background: none;
  }

  .home-bg-img {
    top: 60%;
    width: 60%;
    transform: translate(-10%, -75%);
  }
  .section-about {
    padding: 3.2rem 0;
  }
  .about-box {
    grid-template-columns: 1fr;
    row-gap: 3.2rem;
    padding: 0 9.6rem;
  }
  .about-img-box {
    grid-row-start: 1;
  }
  .img-author {
    width: 35%;
    float: none;
  }
  .books-hero {
    grid-template-columns: 1fr 4fr 1fr;
  }
  .border-mid-line-2 {
    width: 75%;
  }
  .books-bg-img {
    width: 75%;
  }

  /* MOBILE NAVIGATION */
  .btn-mobile-nav {
    display: block;
  }

  .main-nav {
    background-color: rgba(6, 40, 61, 0.97);
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(10px);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    transform: translateX(100%);

    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s ease-in;

    /* Hide navigation */
    /* Allows NO transitions at all */
    /* display: none; */

    /* 1) Hide it visually */
    opacity: 0;

    /* 2) Make it unaccessible to mouse and keyboard */
    pointer-events: none;

    /* 3) Hide it from screen readers */
    visibility: hidden;
  }

  .nav-open .main-nav {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transform: translateX(0);
  }

  /* .nav-close .main-nav {
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transform: translateX(100%);
  } */

  .nav-open .icon-mobile-nav[name="close-outline"] {
    display: block;
  }

  .nav-open .icon-mobile-nav[name="menu-outline"] {
    display: none;
  }

  .main-nav-list {
    flex-direction: column;
    gap: 4.8rem;
  }

  .main-nav-link:link,
  .main-nav-link:visited {
    font-size: 3rem;
  }
  .home-link {
    display: inline;
  }
}

/**************************/
/* BELOW 704px (Smaller tablets) */
/**************************/

@media (max-width: 44em) {
  .grid--3-cols,
  .grid--4-cols {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-hero {
    padding: 2.4rem 0;
  }

  .hero {
    grid-template-columns: 1fr;
  }
  .hero-img-box {
    display: none;
  }
  .home-bg-img {
    display: none;
  }

  .section-home-about {
    padding: 9.6rem 0;
  }
  .home-about {
    grid-template-columns: 1fr;
    padding: 0 9.6rem;
  }
  .home-about-spacer {
    display: none;
  }

  .border-mid-line {
    width: 60%;
  }

  .about-box {
    padding: 0 6.4rem;
  }
  .books-hero {
    grid-template-columns: 1fr;
    padding: 0 9.6rem;
  }
  .border-mid-line-2 {
    width: 75%;
  }
  .books-bg-img {
    width: 95%;
  }
  .spacer {
    display: none;
  }
  .book-preview-title-box {
    padding: 0 9.6rem;
  }
  .book-preview {
    grid-template-columns: 1fr;
    row-gap: 3.2rem;
  }
  .preview-img-box-2 {
    grid-row-start: 2;
  }
  .books-img,
  .books-img-2 {
    width: 50%;
  }
  .img-description {
    align-self: center;
    margin-top: 0.8rem;
    margin-left: 0;
  }
  .img-description-2 {
    align-self: center;
    margin-top: 0.6rem;
    margin-left: 3.2rem;
  }

  .logo-col,
  .address-col {
    grid-column: span 3;
  }

  .nav-col {
    grid-row: 1;
    grid-column: span 2;
    margin-bottom: 3.2rem;
  }
}

/**************************/
/* BELOW 544px (Phones) */
/**************************/

@media (max-width: 34em) {
  .grid,
  .grid-sm {
    row-gap: 4.8rem;
  }

  .grid--2-cols,
  .grid--3-cols,
  .grid--4-cols,
  .grid--2-cols-1fr-2fr,
  .grid--2-cols-2fr-1fr,
  .grid--2-cols-3fr-2fr,
  .grid--2-cols-2fr-3fr,
  .grid--4-cols-2-center {
    grid-template-columns: 1fr;
  }

  .btn,
  .btn:link,
  .btn:visited {
    padding: 2.4rem 1.6rem;
  }
  .margin-bottom-lg {
    margin-bottom: 0 !important;
  }
  .section-hero {
    padding: 0;
  }

  .hero {
    padding: 4.8rem 3.2rem;
  }

  .hero-text-box {
    padding: 4.8rem 0;
  }

  .home-about {
    grid-template-columns: 1fr;
    padding: 0 4.8rem;
  }

  .border-mid-line {
    width: 95%;
  }

  .about-box {
    padding: 0 3.2rem;
  }
  .img-author {
    width: 60%;
  }
  .img-author-2,
  .video-author {
    width: 100%;
  }
  .video-author {
    height: 200px;
  }
  .books-hero {
    padding: 0 2.4rem;
  }
  .border-mid-line-2 {
    width: 85%;
  }
  .books-bg-img {
    top: 2rem;
    width: 135%;
  }
  .book-preview-title-box {
    padding: 0 3.2rem;
  }
  .book-preview {
    grid-template-columns: 1fr;
    row-gap: 3.2rem;
  }
  .books-img,
  .books-img-2 {
    width: 50%;
  }

  .logos img {
    height: 1.2rem;
  }
  .footer {
    grid-template-columns: 1fr;
    justify-content: center;
  }
  .footer-info-box {
    align-items: center;
    order: 2;
  }
  .footer-nav {
    padding: 2.4rem;
    text-align: center;
  }
}