@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

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

html, body {
  height: 100%;
}

body {
  background: rgba(2,28,37,1);
  background: radial-gradient(circle, rgba(2,28,37,1) 0%, rgba(1,14,18,1) 100%);
  font-family: 'Roboto', sans-serif;
  /* background-image: url('../images/mountains-universe-1.png'); */
  /* background-size: cover; */
  padding: 46px;
  color: white;
}

div.background, div.wrapper {
  background-size: cover;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  z-index: -1;
  animation: fadeIn 1s;
}

header {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

nav ul {
  /* text-align: center; */
  list-style: none;
  display: grid;
  place-items: center;
  gap: 16px;
}

nav a {
  font-size: 24px;
  text-decoration: none;
  color: #aaa;
}

nav a:hover {
  color: white;
  text-shadow: 0px 0px 2px currentColor;
} 

a.active {
  pointer-events: none;
  cursor: default;
  color: white;
  text-shadow: 0px 0px 2px currentColor;
}

main {
  height: 90%;
}

.home-content {
  display: flex;
  justify-content: center;
  align-items: center;
  /* height: 100%; */
}

h2 {
  color: #e1e1e1;
  font-size: 32px;
  text-align: center;
  margin-bottom: 32px;
}

.content-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.button {
  text-decoration: none;
  text-transform: uppercase;
  color: white;
  padding: 12px 32px;
  border: 2px solid white;
  border-radius: 5px;
  width: 200px;
  height: 48px;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.button:hover {
  color: hsla(194, 97%, 31%, 1);
  background-color: #fff;
}

@keyframes fadeIn {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.content-wrapper-404 {
  display: flex;
  font-size: 48px;
  text-align: center;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  
  & img {
    animation: float 5s ease infinite;
  }
}

@keyframes float {
  0% {
    transform: translatey(0px);
  }

  50% {
    transform: translatey(-50px);
  }

  100% {
    transform: translatey(0px);
  }
}

.text-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
gap: 20px;
}

/* ===================== */
/* === MEDIA QUERIES === */
/* ===================== */

@media (min-width: 600px) {
html, body {
  height: 100%;
}

body {
  background: rgba(2,28,37,1);
  background: radial-gradient(circle, rgba(2,28,37,1) 0%, rgba(1,14,18,1) 100%);
  font-family: 'Roboto', sans-serif;
  /* background-image: url('../images/universe.webp');
  background-size: cover; */
  padding: 72px;
}

div.bg {
  background-size: cover;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  z-index: -1;
  opacity: 0;
}

}

#page {
  width: 100%;
  max-width: 1280px;
  height: 100%;
  margin: 0 auto;
}

header {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 32px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
}

nav a {
  font-size: 24px;
  text-decoration: none;
  color: #aaa;
}

nav a:hover {
  color: white;
  text-shadow: 0px 0px 2px currentColor;
} 

a.active {
  /* pointer-events: none; */
  cursor: default;
  color: white;
  text-shadow: 0px 0px 2px currentColor;
}

main {
  height: 90%;
}

.home-content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 90%;
}

h2 {
  color: #e1e1e1;
  font-size: 48px;
  margin-bottom: 32px;
  text-align: left;
}

.content-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.button {
  text-decoration: none;
  text-transform: uppercase;
  color: white;
  padding: 12px 32px;
  border: 2px solid white;
  border-radius: 5px;
  width: 200px;
  height: 48px;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.button:hover {
  color: hsla(194, 97%, 31%, 1);
  background-color: #fff;
}

.universe-content,
.exploration-content {
  padding-top: 100px;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 640px;
}

.universe-content p, 
.exploration-content p {
  color: #fff;
  font-size: 18px;
  line-height: 28px;
}

.load-img {
  width: 0;
  height: 0;
  visibility: hidden;
}