:root {
  --primary-800: #393939;
  --secondary-200: #FCFF99;
  --secondary-400: #F5FF00;
  --secondary-shadow: #484A08;
}

body {
  margin: 0;
  overflow: hidden;
}

* {
  font-family: "Poppins";
}

header {
  position: fixed;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo {
  width: 100%;
  max-width: 900px;
  min-height: 180px;
  max-height: 60vh;
  object-fit: contain;
}

main {
  background-color: var(--primary-800);
  background: url('../assets/background.png')
    no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-flow: column wrap;
  justify-content: end;
}

#main-section {
  margin: 40px;
  display: flex;
  flex-flow: column wrap;
  gap: 10px;
}

#spinner div {
  --wid: 20px;
  --thickness: 4px;
  margin: auto;
  border: var(--thickness) solid var(--secondary-400);
  border-top: var(--thickness) solid var(--secondary-200);
  border-radius: 50%;
  width: var(--wid);
  height: var(--wid);
  animation: spin 2s linear infinite;
}

@-webkit-keyframes spin {
  0% {
    -webkit-transform: rotate(0deg);
  }

  100% {
    -webkit-transform: rotate(360deg);
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

#message {
  text-align: center;
  color: var(--secondary-400);
}

#message button {
  margin-top: 10px;
  padding: 10px;
  border-radius: 20px;
  outline: none;
  border: none;
  background-color: var(--secondary-400);
  color: var(--secondary-shadow);
  font-weight: bold;
  cursor: pointer;
  --ts-time: 0.5s;
  -webkit-transition: opacity var(--ts-time) ease-in-out,
    scale var(--ts-time) var(--ts-time) ease-in-out;
  -moz-transition: opacity var(--ts-time) ease-in-out,
    scale var(--ts-time) ease-in-out;
  transition: opacity var(--ts-time) ease-in-out,
    scale var(--ts-time) ease-in-out;
}

#message button:hover {
  scale: 1.1;
}

.buttons-wrapper {
  display: flex;
  flex-flow: row wrap;
  gap: 20px;
  justify-content: center;
}

.buttons-wrapper a {
  opacity: 0.8;
  --ts-time: 0.5s;
  -webkit-transition: opacity var(--ts-time) ease-in-out,
    scale var(--ts-time) var(--ts-time) ease-in-out;
  -moz-transition: opacity var(--ts-time) ease-in-out,
    scale var(--ts-time) ease-in-out;
  transition: opacity var(--ts-time) ease-in-out,
    scale var(--ts-time) ease-in-out;
}

.buttons-wrapper a:hover {
  opacity: 1;
  scale: 1.1;
}

.buttons-wrapper a img {
  object-fit: contain;
  width: fit-content;
}

.opacity-transition {
  --ts-time: 0.5s;
  opacity: 0;
  -webkit-transition: opacity var(--ts-time) ease-in-out;
  -moz-transition: opacity var(--ts-time) ease-in-out;
  transition: opacity var(--ts-time) ease-in-out;
}

.opacity-transition.shown {
  opacity: 1;
}