@import url("https://fonts.googleapis.com/css2?family=Bai+Jamjuree:wght@400;500;600&display=swap");
* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
}

body {
  background: #fff url("./img/bg-header-mobile.png") no-repeat border-box;
  font-family: 'Bai Jamjuree', sans-serif;
  text-align: center;
  padding: 0 9%;
}

h1, h2, h3 {
  color: #4c545d;
}

h1 {
  font-size: 1.9em;
  margin-bottom: .7em;
}

h2 {
  font-size: 1.6em;
  margin-bottom: 1em;
}

h3 {
  font-size: 1.4em;
  margin-bottom: .6em;
}

p {
  color: #9fabb2;
  font-size: 1em;
  line-height: 1.5em;
  margin-bottom: 3em;
}

.download-btn {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 1.1em;
  font-weight: 600;
  display: block;
  width: 100%;
  border-radius: 3em;
  padding: .8em 0;
  margin-bottom: 1.2em;
}

.ios {
  background-color: #26baa4;
  -webkit-box-shadow: 0 3px 0 #198f7d;
          box-shadow: 0 3px 0 #198f7d;
}

.mac {
  background-color: #6173ff;
  -webkit-box-shadow: 0 3px 0 #4654be;
          box-shadow: 0 3px 0 #4654be;
}

#hero {
  margin-bottom: 10em;
}

#hero .logo {
  margin: 7em 0 4em 0;
}

.intro {
  margin-bottom: 4em;
}

.features {
  margin-bottom: 10em;
}

.features img {
  width: 100%;
  margin-bottom: 3em;
}

.devices {
  margin-bottom: 6em;
}

.devices img {
  width: 100%;
}

.tools {
  margin-bottom: 8em;
}

.tools img {
  margin-bottom: 2em;
}

.brand-logos {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  row-gap: 4em;
  margin-bottom: 10em;
}

.brand-logos img {
  max-width: 40%;
}

.download {
  margin-bottom: 10em;
}

footer {
  background-color: rgba(159, 171, 178, 0.2);
  margin: 0 -11%;
  overflow-x: hidden;
}

footer .logo {
  width: 50px;
  margin: 2.5em 0;
}

footer #footer-nav {
  list-style-type: none;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  row-gap: 2em;
  margin-bottom: 2.5em;
  font-size: 1.2em;
}

footer a {
  text-decoration: none;
  color: #4c545d;
}

footer .social-media-icons {
  position: relative;
  left: 50%;
  -webkit-transform: translate(-50%);
          transform: translate(-50%);
  width: 50%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  margin-bottom: 2em;
}

footer .social-media-icons img {
  max-width: 25px;
  max-height: 25px;
}

.attribution {
  font-size: 11px;
  text-align: center;
  padding-bottom: 10px;
}

.attribution a {
  color: #3e52a3;
}

@media screen and (min-width: 1201px) {
  body {
    background: #fff url("./img/bg-header-desktop.png") no-repeat border-box;
    background-size: cover;
    padding: 0;
  }
  h1 {
    font-size: 2.5em;
  }
  h2 {
    font-size: 2.2em;
  }
  h3 {
    font-size: 1.6em;
  }
  p {
    font-size: 1.2em;
  }
  #hero {
    padding: 0 30%;
  }
  .download-btn {
    display: inline-block;
    width: 26%;
    min-width: 200px;
  }
  .download-btn.ios {
    margin-right: .8em;
  }
  .intro {
    padding: 0 27%;
  }
  .features {
    position: relative;
    left: -6%;
    width: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-flex: 0;
        -ms-flex-positive: 0;
            flex-grow: 0;
  }
  .features p {
    font-size: 1em;
  }
  .features img {
    margin-right: 5em;
  }
  .feature-list {
    padding-right: 20%;
    padding-bottom: 10%;
    text-align: left;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-pack: space-evenly;
        -ms-flex-pack: space-evenly;
            justify-content: space-evenly;
    -webkit-box-align: start;
        -ms-flex-align: start;
            align-items: flex-start;
  }
  .devices {
    padding: 0 20%;
  }
  .tools {
    margin: 0 8%;
  }
  .tool-list {
    margin-bottom: 8em;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
  }
  .tool {
    -webkit-box-flex: 1;
        -ms-flex: 1;
            flex: 1;
    padding: 2%;
  }
  .brand-logos {
    padding: 0 10%;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
        -ms-flex-direction: row;
            flex-direction: row;
  }
  .download {
    padding: 0 30%;
  }
  footer {
    position: relative;
    margin: 0;
    padding: 3em 10%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-column-gap: 2em;
            column-gap: 2em;
  }
  footer .logo {
    width: 60px;
    margin: 0;
  }
  footer #footer-nav {
    text-align: left;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
        -ms-flex-direction: row;
            flex-direction: row;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    margin-bottom: 0;
    -webkit-box-flex: 0;
        -ms-flex-positive: 0;
            flex-grow: 0;
    -webkit-box-pack: start;
        -ms-flex-pack: start;
            justify-content: flex-start;
    margin-right: 10em;
  }
  footer li {
    -ms-flex-preferred-size: 33%;
        flex-basis: 33%;
  }
  footer .social-media-icons {
    left: 0;
    -webkit-transform: translate(0);
            transform: translate(0);
    width: 12%;
    max-width: 200px;
    -ms-flex-item-align: center;
        -ms-grid-row-align: center;
        align-self: center;
    margin: 0;
  }
  .attribution {
    width: 100%;
    text-align: center;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin: 0;
    -webkit-transform: translateX(-50%);
            transform: translateX(-50%);
  }
}