:root {
  --surface: 255, 255, 255;
  --on-surface: 15 23 42;
  --muted: 100 116 139;
  --accent: 99 102 241;
  --dot: 200 200 200;
}
html.dark {
  --surface: 11 12 13;
  --on-surface: 220 224 230;
  --muted: 148 163 184;
  --accent: 96 165 250;
  --dot: 41 41 41;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
::selection {
  background: #f21616;
  color: white;
}

html {
  background: fixed url(images/background-tile.png);
  background-color: rgb(51, 51, 51);
  scrollbar-gutter: stable;
}

body {
  font-family: "Open Sans", sans-serif;
  color: rgb(204, 204, 204);

  overflow-x: hidden;
}

main {
  background-color: rgba(39, 43, 48, 0.8);
  box-shadow: rgb(0, 0, 0) 0px 0px 10px 1px;
  backdrop-filter: blur(10px);

  width: auto;
  max-width: 800px;
  margin: 56px auto 0;
  padding: 15px;
}

h1 {
  font-size: 50px;
}

iframe {
  margin-top: 15px;
}

nav {
  background-image: linear-gradient(rgba(68, 68, 68, 0.8), rgba(0, 0, 0, 0.8));
  backdrop-filter: blur(5px);
  height: 56px;
  width: 100%;
  box-shadow: 0 0 10px 1px black;

  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
}

nav div {
  margin: 0 auto;
  width: auto;
  max-width: 800px;
  height: 100%;

  display: flex;
  align-items: center;
}

nav div h2 {
  margin-right: 10px;
}

nav div a {
  background: url(images/menu-divider.png) right top no-repeat;
  height: 56px;
  font-size: 18px;
  font-weight: bold;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  padding: 13px;

  color: white;
}

a {
  color: #f21616;
  text-decoration: none;
  font-weight: 600;

  transition: all 0.5s;
}

a:hover {
  color: #f21616;
  text-shadow: 0 0 5px;
}

.small-nav a {
  color: rgb(0, 170, 213);
}

.small-nav a:hover {
  color: rgb(0, 204, 255);
}

footer {
  font-size: 10px;
  color: rgb(102, 102, 102);
  border-top: 1px solid rgb(50, 55, 63);
  padding: 10px 0 10px;
}

.small-nav {
  border-bottom: 1px solid rgb(20, 20, 20);
  padding: 10px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.small-nav .right {
  margin-left: auto;
}

#game-container {
  width: 800px;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  background-color: #111;
  margin-top: 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 4px;
  box-shadow: inset 0 0 20px black;

  background-image: url("images/thumbnail.png");
  background-size: cover;
  background-position: center;
}

#load-game-btn {
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  border-radius: 0.5rem;
  border: 1px solid rgb(100, 100, 100, 0.5);
  color: #e0e0e0;
  margin: 0 2rem;
  overflow: hidden;
  padding: 1rem;
  text-align: center;

  width: 100px;

  font-size: 24px;
  cursor: pointer;
  transition: all 0.2s;
}

#load-game-btn:hover {
  transform: scale(1.05);
  filter: brightness(1.1);
}

#game-container iframe {
  display: block;
  margin: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

@media screen and (prefers-color-scheme: dark) {
  :root {
    --surface: 11 12 13;
    --on-surface: 220 224 230;
    --muted: 148 163 184;
    --accent: 96 165 250;
    --dot: 41 41 41;
  }
}

@media screen and (max-width: 830px) {
  main {
    width: 100%;
    min-height: calc(100vh - 56px);
    max-width: none;
  }

  nav {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 10px;
  }

  #game-container {
    width: 100%;
    max-width: 100%;
  }

  #game-container iframe {
    width: 100%;
    height: 100%;
  }
}

@media screen and (max-width: 491px) {
  nav {
    padding: 0;
  }

  nav div img {
    width: 0;
  }
}

@media screen and (max-width: 511px) {
  .small-nav .right {
    margin-left: 0;
  }
}