/* Reset padding and margin */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Geologica", "Avenir", "Trebuchet MS", "Helvetica Neue", Arial, sans-serif;
}

main {
  display: none;
}

header {
  height: 100vh;
  width: 100vw;
  padding: 1rem;
  position: absolute;
  overflow-x: hidden;
  justify-content: center;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  text-align: center;
}

em {
  font-style: normal;
  font-weight: bold;
  color: crimson;
}

.header-red-box {
  background-color: crimson;
  height: 4rem;
  width: 85%;
}

.pad-title {
  padding-bottom: 4rem;
}

#intro {
  position: relative;
  height: 1920px;
}

.intro-div, .scroll-guide {
  display: none;
  padding: 1rem 1rem;
  background-color: rgba(83, 83, 83, 0.3);
  margin: 20vh 0;
}

.scroll-guide {
  background-color: transparent;
  text-align: center;
  margin: 0;
  display: block;
  opacity: 0;
}

.fact-1 {
  margin-top: 10vh;
  margin-right: 10vw;
}

.fact-2 {
  margin-left: 10vw;
  text-align: right;
}

.parallax-layer {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
}

.layer-mountains {
  background-image: url("img/mountains.jpg");
  background-size: cover;
}

.layer-trees {
  background-image: url("img/trees.png");
  background-size: cover !important;
  top: 1280px;
  height: 1280px;
}

.layer-shadow {
  background-color: black;
  /* Background image size is 1920px - added 10px covers thin line at bottom of layer-mountains. */
  height: 1930px;
  opacity: 0;
}

#analysis {
  height: 100vh;
  overflow-x: hidden;
  background-color: black;
  color: orange;
  padding: 2rem 0;
  justify-content: center;
}

footer {
  background-color: black;
  display: none;
  padding: 2rem 0;
  text-align: left;
  border-top: solid 2px gold;
}

ul {
  list-style: none;
}

li {
  padding-bottom: 1rem;
}

.color-crimson {
  color: crimson;
}

.color-white, .write-up p {
  color: white;
}

li, a {
  color: white;
}

a:visited {
  color: gold;
}

a:active {
  color: orange;
}

.container.middle {
  display: flex;
  flex-wrap: wrap;
  align-items: left;
  font-style: normal;
  text-align: left;
}

.container {
  width: 90vw;
  padding: 0 1rem;
}

.pad-bottom-1 {
  padding-bottom: 1rem;
}

.pad-bottom-2 {
  padding-bottom: 2rem;
}

.pad-bottom-3 {
  padding-bottom: 3rem;
}

.pad-bottom-4 {
  padding-bottom: 4rem;
}

.margin-bottom-1 {
  margin-bottom: 1rem;
}

.margin-bottom-3 {
  margin-bottom: 3rem;
}

hr {
  width: 90%;
  border: solid 2px gold;
}

.research-question {
  font-size: 1.5rem;
  font-weight: bold;
}

.middle > *, .viz, .write-up {
  opacity: 0;
}

.viz, .write-up {
  display: none;
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }

  to {
    display: none;
    opacity: 0;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@media (min-width: 576px) {
  .fact-1 {
    margin-left: 5vw;
    margin-right: 30vw;
  }

  .fact-2 {
    margin-left: 30vw;
    margin-right: 5vw;
  }

  h2, .research-question {
    font-size: 1.75rem;
  }
}

@media (min-width: 768px) {
  .fact-1 {
    margin-left: 10vw;
    margin-right: 45vw;
  }

  .fact-2 {
    margin-left: 45vw;
    margin-right: 10vw;
  }
}

@media (min-width: 992px) {
  header {
    padding: 0 25vw;
    text-align: left;
  }

  .header-red-box {
    margin-right: 6vw;
    width: 100%;
  }

  .fact-1 {
    margin-right: 60vw;
  }

  .fact-2 {
    margin-left: 60vw;
  }

  .container {
    width: 70%;
  }
}

@media (min-width: 1400px) {
  .container {
    margin: 0 10vw;
  }
}