/* In media queries 1 rem != 10px */
/* 1 rem = 1em = 16px */

/******************************************/
/* BELOW 1100px (Landscape tablets) */
/******************************************/
/* 1100/16 = 69 */
@media (max-width: 69em) {
  html {
    /* 9px / 16px */
    font-size: 56.25%;
  }
  .hero {
    gap: 4.8rem;
  }
  .grid {
    column-gap: 4.8rem;
    row-gap: 8rem;
  }
  .projects-heading {
    font-size: 3.6rem;
  }
  .projects-heading-secondary {
    font-size: 2.4rem;
  }
  .header {
    padding: 0 3.2rem;
  }
}

/*************************/
/* BELOW 944px (tablets) */
/*************************/

@media (max-width: 59em) {
  html {
    /* 8px / 16px = 0.5 = 50% */
    font-size: 50%;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 0 8rem;
    gap: 6.4rem;
  }
  .hero-text-box,
  .hero-img-box {
    text-align: center;
  }
  .hero-img {
    width: 60%;
  }
  /* .projects-number {
    font-size: 7.4rem;
  } */
  .award {
    /* 3/5 = 60% + 2/5 */
    grid-template-columns: 1fr; /* One column */
    grid-template-rows: 1fr 1fr; /* Two rows */
  }
  .award-img-box {
    grid-row: 1;
  }

  /* MOBILE NAVIGATION */
  .btn-mobile-nav {
    display: block;
    z-index: 9999;
  }

  .main-nav {
    background-color: rgba(5, 23, 39, 0.9);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    /*relative to the viewport*/
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    /* Occupy the entire viewport */
    height: 100vh;
    transform: translateX(100%);

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

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

    /* HIDE THE ELEMENT WITHOUT USING 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-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;
  }
}

/*************************/
/* BELOW 704px (Smaller tablets) */
/*************************/
/* 704/16 = 44 */
@media (max-width: 44em) {
  .heading-section {
    font-size: 3.6rem;
    margin-bottom: 4.8rem;
  }
}

/*************************/
/* BELOW 544px (Phones) */
/*************************/
/* A lot of phones are around 350 - 450  */

@media (max-width: 34em) {
  /* .section-title {
    padding: 8rem 0 3.2rem 0;
  } */

  .heading-section {
    margin-bottom: 2.4rem;
  }

  .grid {
    row-gap: 6.4rem;
    grid-template-columns: 1fr;
  }

  .grid--6-cols {
    gap: 0;
  }

  .one-col, .two-cols {
    grid-column: span 6;
  }

  .associate-cert {
    grid-column: span 3;
  }

  .associate-cert:last-child {
    grid-column: span 6;
  }

  figure img {
    transform: scale(0.8);
  }

  .cert-badge img:hover {
    transform: scale(0.9); /*scale images*/
  }
  .associate-cert img:hover {
    transform: scale(0.85); /*scale images*/
  }

  .btn,
  .btn:link,
  .btn:visited {
    padding: 2.4rem 1.6rem;
  }

  .section-hero {
    padding: 2.4rem 0 6.4rem 0;
  }

  .section {
    padding: 3.2rem 0 1.2rem 0;
  }

  .hero {
    padding: 0 3.2rem;
  }

  .hero-img {
    width: 80%;
  }
  /* Select odd project images and move them below its text */
  .projects-img-box:nth-child(2) {
    grid-row: 1;
  }

  .projects-img-box:nth-child(6) {
    grid-row: 5;
  }

  .projects-img-box:nth-child(10) {
    grid-row: 9;
  }

  .projects-img-box:nth-child(14) {
    grid-row: 13;
  }

  /* Move down the images to its container text */
  .projects-img-box {
    transform: translateY(3.2em);
  }

  .award-text {
    padding: 3.2rem;
  }

  .paper-title {
    font-size: 2rem;
    line-height: 1.2;
  }
}
/* 
- 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
*/