style.css

@import url("https://fonts.googleapis.com/css2?family=Bai+Jamjuree:wght@400;600&display=swap");

:root {
  --strong-cyan: hsl(171, 66%, 44%);
  --lightBlue: hsl(233, 100%, 69%);
  --darkGrayishBlue: hsl(210, 10%, 33%);
  --grayishBlue: hsl(201, 11%, 66%);
  --gradient: linear-gradient(
    175deg,
    var(--grayishBlue),
    var(--darkGrayishBlue)
  );
}

body {
  font-family: "Bai Jamjuree", sans-serif;
  background-color: white;
}

* {
  margin: 0;
  padding: 0;
  border: none;
  box-sizing: border-box;
}

a {
  text-decoration: none;
}

main {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 8rem;
  font-size: 18px;
  background: url("./images/bg-header-desktop.png") no-repeat center top/100%;
}

h1 {
  width: 50%;
  margin: 4.5rem 0 1.5rem;
  font-size: 2.4em;
  text-align: center;
  color: var(--darkGrayishBlue);
}

.introParagraph {
  width: 50%;
  font-size: 1.1em;
  text-align: center;
  color: var(--grayishBlue);
}

.downloadBtnsContainer {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 3.25rem 0 0;
}

.downloadBtn {
  width: 14rem;
  border-radius: 4rem;
  padding: 1rem;
  background-color: var(--strong-cyan);
  margin: 0 0.5rem;
  text-align: center;
  color: white;
  box-shadow: inset 0 -3px 0 #00000022, 0 4px 8px #00000022;
}

.downloadBtn:nth-child(2) {
  background-color: var(--lightBlue);
}

.downloadBtn:hover {
  opacity: 80%;
  cursor: pointer;
}

.sectionHead {
  width: 50%;
  text-align: center;
  font-size: 2rem;
  color: var(--darkGrayishBlue);
  margin-top: 10rem;
}

.sectionBrief {
  width: 50%;
  color: var(--grayishBlue);
  text-align: center;
  margin: 1.5rem 0 2rem;
}

.featuresContainer {
  display: flex;
  width: 100%;
}

.illustrationInFeatures {
  width: 50%;
  display: flex;
  justify-content: flex-end;
}

.featureDetails {
  width: 50%;
  padding: 0 7rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature {
  width: 80%;
  padding: 1em 0;
}

.featureHead {
  padding: 0.25rem 0;
  font-size: 1.5em;
  font-weight: 600;
  color: var(--darkGrayishBlue);
}

.featureBrief {
  padding: 0.25rem 0;
  color: var(--grayishBlue);
}

.image-devices {
  margin-top: 5rem;
}

.functionalities {
  padding-top: 1.5em;
  width: 100%;
  display: flex;
  justify-content: center;
}

.functionality {
  width: 25%;
  text-align: center;
  margin: 0 0.5rem;
}

.iconFunctoinality {
  padding: 0 0 2em;
}

.functionalityHead {
  padding: 0 0 1em;
  font-size: 1.5em;
  color: var(--darkGrayishBlue);
}

.functionalityBrief {
  color: var(--grayishBlue);
  line-height: 1.5;
}

.sponsors {
  width: 100%;
  margin-top: 10rem;
  display: flex;
  justify-content: center;
}

.sponsor {
  margin: 0 2em;
}

.footerSection {
  margin-top: 8rem;
  padding: 2rem 10rem;
  width: 100%;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  background-color: #f5f6f8;
}

.footer-logo img {
  width: 5rem;
}

.footer-links {
  width: 60%;
  display: flex;
  flex-wrap: wrap;
}

.footerItem {
  width: 7em;
  font-size: 1.5rem;
  margin: 0.5rem 1.5rem;
  transition: 0.4s ease-in-out;
  color: var(--darkGrayishBlue);
}

.footerItem:hover {
  color: var(--lightBlue);
  cursor: pointer;
}

.socialLinks {
  display: flex;
}

.social-link {
  margin: 0 1rem;
  transition: 0.4s ease;
}

.social-link:hover svg path {
  fill: var(--strong-cyan);
}

.attribution {
  padding: 1rem;
  color: var(--strong-cyan);
  text-align: center;
  background: var(--gradient);
}

.attribution a {
  color: whitesmoke;
  text-decoration: none;
}

/* ? media queries here */
/* ? media queries here */
/* ? media queries here */

@media screen and (max-width: 1080px) {
  main {
    background: url("./images/bg-header-mobile.png") no-repeat center top/100%;
  }

  h1 {
    width: 85%;
    font-size: 2em;
  }

  .introParagraph {
    width: 85%;
    font-size: 1em;
  }

  .downloadBtnsContainer {
    width: 85%;
    flex-direction: column;
    align-items: center;
  }

  .downloadBtn {
    width: 100%;
    margin: 0.5em 0;
  }

  .sectionHead {
    width: 85%;
    font-size: 1.5em;
  }

  .sectionBrief {
    width: 85%;
  }

  .featuresContainer {
    flex-direction: column;
    width: 85%;
  }

  .illustrationInFeatures {
    width: 100%;
    justify-content: center;
  }

  .illustrationInFeatures img {
    width: 100%;
  }

  .featureDetails {
    width: 100%;
    padding: 0;
    text-align: center;
    align-items: center;
    margin-top: 2em;
  }

  .feature {
    width: 100%;
  }

  .image-devices {
    width: 95%;
  }

  .functionalities {
    width: 85%;
    flex-direction: column;
  }

  .functionality {
    width: 100%;
    margin: 1.5em 0;
  }

  .sponsors {
    width: 100%;
    flex-direction: column;
    align-items: center;
  }

  .sponsor {
    margin: 2em 0;
  }

  .footerSection {
    width: 100%;
    flex-direction: column;
    align-items: center;
    padding: 5em 0;
  }

  .footer-logo img {
    width: 5rem;
  }

  .footer-links {
    width: 85%;
    display: flex;
    flex-direction: column;
    padding: 2rem 0 3em;
  }

  .footerItem {
    font-size: 1.2em;
    text-align: center;
    margin: 1rem auto;
  }

  .socialLinks {
    display: flex;
  }
}