* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Plus Jakarta Sans', Helvetica, sans-serif;
  color: var(--blue);
}

:root {
  /* colors */
  --blue: #666DA2;
  --dark-blue: #13183f;
  --pink: #f74780;
  --light-pink: #ffa7c3;
  --white: #ffffff;
  /* gradients */
  --body-background: linear-gradient(#ffffff, #f0f0ff);
  --primary-gradient: linear-gradient(#ff6f47, #f028a7);
  --light-primary-gradient: linear-gradient(hsl(13, 100%, 79%), hsl(322, 87%, 70%));
  --secondary-gradient: linear-gradient(hsl(237, 100%, 64%), hsl(322, 87%, 55%));
  --light-secondary-gradient: linear-gradient(hsl(237, 100%, 79%), hsl(322, 87%, 70%));
}

body {
  background: var(--body-background);
}

nav, footer .wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
}

nav {
  margin-bottom: 20px;
}

footer {
  padding-top: 20px;
  padding-bottom: 20px;
}

header {
  display: flex;
  height: calc(100vh - 75px);
  max-height: 800px;
}

.hero-text {
  width: 50%;
}

main, footer .wrapper {
  max-width: 1400px;
  padding: 0 100px 0 100px;
  margin: auto;
}

.hero-text {
  display: flex;
  flex-flow: column;
  justify-content: center;
}

.hero-text .btn {
  align-self: flex-start;
  margin: 50px 0 50px 0;
  height: 50px;
}

.hero-text h1 {
  font-size: 46px;
  margin: 30px 0 30px 0;
  color: var(--dark-blue);
}

.dark-blue-bg {
  background: var(--dark-blue);
}

.sec-grad-bg {
  background: var(--secondary-gradient);
}

.pri-grad-bg {
  background: var(--primary-gradient);
}

.btn.pri-grad-bg:hover {
  background: var(--light-primary-gradient);
  cursor: pointer;
}

.btn.sec-grad-bg:hover {
  background: var(--light-secondary-gradient);
  cursor: pointer;
}

.btn.dark-blue-bg:hover {
  color: var(--dark-blue);
  background: var(--blue);
  cursor: pointer;
}

button.btn {
  border: none;
  border-radius: 25px;
  height: 40px;
  padding: 5px;
  min-width: 125px;
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
}

nav {
  z-index: 1;
  position: relative;
}
nav.btn {
  z-index: 5;
}

.hero-image {
  background: url(../images/image-hero-desktop.png);
  background-position: bottom left;
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  max-height: inherit;
  background-repeat: no-repeat;
}

.course-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px 50px;
  margin: 50px 0 50px 0;
}

.card {
  background: var(--white);
  border-radius: 10px;
  min-height: 100px;
  min-width: 100px;
  padding: 0 20px 20px 20px;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: stretch;
}

.highlight {
  background: var(--primary-gradient);
  color: var(--white);
}

.highlight h2 {
  color: var(--white);
  margin: 50px 0 50px 0;
}

.card .icon {
  position: relative;
}

.card h3 {
  color: var(--dark-blue);
}

.card p {
  margin: 20px 0 20px 0;
}

.card .link {
  color: var(--pink);
  text-decoration: none;
  font-weight: bold;
  margin-top: auto;
  justify-self: flex-end;
}

.card .link:hover {
  color: var(--light-pink);
}

.icon {
  height: 50px;
  width: 50px;
  top: -25px;
}

.icon.icon-animation {
  content: url(../images/icon-animation.svg);
}

.icon.icon-business {
  content: url(../images/icon-business.svg);
}

.icon.icon-crypto {
  content: url(../images/icon-crypto.svg);
}

.icon.icon-design {
  content: url(../images/icon-design.svg);
}

.icon.icon-photography {
  content: url(../images/icon-photography.svg);
}

@media screen and (max-width: 1200px) {
  main, footer .wrapper {
    padding: 0 20px 0 20px;
  }

  .hero-image {
    background: url(../images/image-hero-tablet.png);
    background-position: bottom left;
  }

}

@media screen and (max-width: 920px) {  
  .course-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 50px 30px;
  }

  .hero-text {
    width: 35%;
  }

  .hero-image {
    width: 65%;
  }

  main, footer .wrapper {
    margin: unset;
  }

  .logo {
    width: 70%;
  }
}

@media screen and (max-width: 550px) {
  .hero-text {
    width: inherit;
    min-height: 350px;
  }

  .hero-text h1 { 
    font-size: 32px;
  }

  heading {
    display: block;
    height: unset;
  }

  .hero-text .btn {
    margin-bottom: unset;
  }

  .hero-image {
    position: static;
    background: url(../images/image-hero-mobile.png);
    background-size: contain;
    background-repeat: no-repeat;
    width: 250px;
    height: 250px;
    margin: auto;
  }

  .course-cards {
    grid-template-columns: 1fr;
  }
}