/*  rem and em do NOT depend on html fonr-size in media queries, instead we 
assume 1rem = 1em = 16px */

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

@media (max-width: 84em) {

  .hero {
    max-width: 120rem;
  }

  .tool-header {
    font-size: 2rem;
  }

  .tool-description {
    font-size: 1.6rem;
  }
}

/*********************************************************/
/************ BELOW 1200px (landscape tablets) ************/

@media (max-width: 75em) {
  html {
    /* override default font size (percentage of users browser font-size setting
  9px / 16px = 0.5625 = 56.25% */
    font-size: 56.25%;
  }

  #popup-container, #popup-iframe {
    min-width: 75rem;
    min-height: 50rem;
  }

  .grid {
    column-gap: 7.4rem;
    row-gap: 7.4rem;
  }

  .grid--5-cols {
    grid-template-columns: repeat(4, 1fr);
    column-gap: 4.8rem;
    row-gap: 4.8rem;
  }

  .grid--4-cols {
    grid-template-columns: repeat(3, 1fr);
    column-gap: 4.8rem;
    row-gap: 4.8rem;
  }

  .grid--cg-sm {
    column-gap: 1.6rem;
  }

  .grid--plans {
    column-gap: 0;
    row-gap: 3.6rem;
  }

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

  .header {
    padding: 0 3.2rem;
  }

  .hero {
    gap: 6.4rem;
  }

  .cta-form {
    row-gap: 3.2rem;
  }

  .container-tools {
    padding: 6.4rem;
  }

  .tool-header {
    font-size: 1.8rem;
  }

  .tool-description {
    font-size: 1.2rem;
  }
}

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

@media (max-width: 59em) {
  html {
    /* override default font size (percentage of users browser font-size setting
  8px / 16px = 0.5 = 50% */
    font-size: 50%;
  }

  #popup-container, #popup-iframe {
    min-width: 75rem;
    min-height: 50rem;
  }

  .grid--5-cols {
    grid-template-columns: repeat(3, 1fr);
    column-gap: 4.8rem;
    row-gap: 4.8rem;
  }

  .list-item {
    font-size: 1.2rem;
  }

  .hero {
    gap: 3.2rem;
  }

  .cta {
    grid-template-columns: 1fr;
  }

  .cta-text {
    margin-bottom: 3.2rem;
  }

  .cta-form {
    row-gap: 2.4rem;
  }

  .container-gallery {
    grid-template-columns: repeat(2, 1fr);
    padding: 1.6rem 9.6rem 1.6rem 9.6rem;
  }

  .plan-price {
    font-size: 500%;
  }

  .grid--footer-cols {
    column-gap: 3.2rem;
  }
}

/***********************************************/
/************ BELOW 752px (Smaller Tablets) ************/

@media (max-width: 47em) {
  html {
    /* override default font size (percentage of users browser font-size setting
  8px / 16px = 0.5 = 50% */
    font-size: 50%;
  }

  #popup-container, #popup-iframe {
    min-width: 45em;
    min-height: 30rem;
  }

  .grid--2-cols {
    grid-template-columns: 1fr;
    column-gap: 4.8rem;
    row-gap: 4.8rem;
  }

  .grid--printer {
    grid-template-columns: 1fr;
    column-gap: 4.8rem;
    row-gap: 0;
  }

  .grid--2-cols--breadcrumb {
    column-gap: 4.8rem;
    row-gap: 0rem;
  }

  .grid--3-cols,
  .grid--4-cols,
  .grid--5-cols {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 4.8rem;
    row-gap: 4.8rem;
  }

  .grid--cg-sm {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 1.6rem;
    row-gap: 0.8rem;
  }

  .grid--plans {
    grid-template-columns: repeat(2, 1fr);
  }

  .list-item {
    font-size: 1.6rem;
  }

  .btn-mobile-nav {
    display: block;
    z-index: 9999;
  }

  .main-nav {
    background-color: rgba(255, 255, 255, 0.95);
    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;

    /* temporary */
    /* 
    1) hide element visually
    2) make unaccessible to mouse and keyboard
    3) hide from screen readers
    */
    opacity: 0;
    pointer-events: none;
    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;
  }

  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    justify-content: center;
    row-gap: 6.4rem;
    padding: 0 8.4rem;
  }

  .hero-img {
    width: 60%;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }

  .cta-form {
    row-gap: 3.2rem;
  }

  .section-tools {
    grid-template-columns: 1fr;
  }

  .container-tools {
    padding: 6.4rem 6.4rem 3.2rem 6.4rem;
  }

  .container-gallery {
    grid-template-columns: repeat(6, 1fr);
    padding: 1.6rem;
  }

  .container grid grid--2-cols {
    padding: 0;
  }

  .pricing-plan {
    justify-self: center;
    max-width: 35rem;
  }

  .feature {
    display: flex;
    text-align: center;
    flex-direction: column;
  }

  .feature:last-child {
    grid-column: 1 / -1;
    justify-self: center;
    max-width: 50%;
  }

  .feature-icon {
    margin-left: auto;
    margin-right: auto;
  }

  .grid--footer-cols {
    grid-template-columns: repeat(6, 1fr);
  }

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

  .nav-col {
    grid-row: 1;
    grid-column: span 2;
  }

  .container-basic-info,
  .container-user-preferences,
  .container-email-preferences,
  .container-change-password,
  .container-reset-password {
    width: 45rem;
    padding: 1.6rem;
  }
}

/*****************************************************/
/************ BELOW 496px (Mobile Phones) ************/

@media (max-width: 31em) {

  #popup-container, #popup-iframe {
    min-width: 30rem;
    min-height: 20rem;
  }

  .grid--buttons {
    display: inline-block;
  }

  .grid--3-cols,
  .grid--4-cols,
  .grid--5-cols {
    column-gap: 2.4rem;
    row-gap: 3.2rem;
  }

  .section-hero {
    background-color: #faf0ea;
    padding: 2.4rem 0 4.8rem 0;
  }

  .hero {
    row-gap: 6.4rem;
    padding: 0 3.2rem;
  }

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

  .section-how {
    padding: 2.4rem 0 4.8rem 0;
  }

  .section-cta {
    padding: 0 0 4.8em 0;
  }

  .cta-text-box {
    padding: 2.4rem 3.2rem 2.4rem 3.2rem;
  }

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

  .cta-text {
    margin-bottom: 2.4rem;
  }

  .cta-form {
    font-size: 1.2rem;
  }

  .container-gallery {
    grid-template-columns: repeat(4, 1fr);
    padding: 1.2rem;
  }

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

  .pricing-plan {
    padding: 2.4rem;
  }

  .pricing-plan--premium::after {
    top: 4%;
    right: -17%;
  }

  .footer {
    padding: 4.8rem 0;
  }

  .grid--footer-cols {
    row-gap: 4.8rem;
  }

  .container-basic-info,
  .container-user-preferences,
  .container-email-preferences,
  .container-change-password,
  .container-reset-password {
    width: 30rem;
    padding: 1.6rem;
  }
}

/*****************************************************/
/************ Fixing Safari Flexbox Gap ************/

.no-flexbox-gap .main-nav-list li:not(:last-child) {
  margin-right: 4.8rem;
}

.no-flexbox-gap .list-item:not(:last-child) {
  margin-bottom: 1.6rem;
}

.no-flexbox-gap .list-icon:not(:last-child) {
  margin-right: 1.6rem;
}

.no-flexbox-gap .footer-row div:not(:last-child) {
  margin-right: 6.4rem;
}

.no-flexbox-gap .social-links li:not(:last-child) {
  margin-right: 2.4rem;
}

.no-flexbox-gap .footer-nav li:not(:last-child) {
  margin-bottom: 2.4rem;
}

@media (max-width: 75em) {
  .no-flexbox-gap .main-nav-list li:not(:last-child) {
    margin-right: 3.2rem;
  }
}

@media (max-width: 59em) {
  .no-flexbox-gap .main-nav-list li:not(:last-child) {
    margin-right: 0;
    margin-bottom: 4.8rem;
  }
}