:root {
  --main-bg-color: #292c2f;
  --main-fg-color: #f7fbf5;
  --side-bg-color: #101111;
  --sidebar-width: 15em;
}

html {
  background-color: var(--main-bg-color);
  color: var(--main-fg-color);
  font-family: "Noto Sans", sans-serif;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  margin: 0;
}

a {
  color: #179bc5;
}

a:active {
  color: #f0fee5;
}

#me img {
  width: 100%;
  filter: drop-shadow(0 10px 10px var(--side-bg-color));
}

#sidebar {
  background-color: var(--side-bg-color);
}

@media screen and (min-width: 600px) {
  #me img {
    margin-top: -150px;
  }

  #sidebar {
    width: var(--sidebar-width);
    height: 100%;
    position: fixed;
    z-index: 1;
  }

  #sidebar ul {
    padding: 0;
    list-style: none;
    text-align: center;
  }

  #main-container {
    margin-left: var(--sidebar-width);
  }
}

@media screen and (max-width: 600px) {
  #sidebar {
    padding: 10px;
    display: grid;
    grid-template-columns: max-content 1fr;
    align-items: baseline;
  }

  #sidebar nav {
    width: 100%;
  }

  #sidebar ul {
    text-align: right;
    list-style: none;
  }

  #sidebar li {
    display: inline;
    margin: 10px;
  }
}

main {
  margin: auto;
  padding: 0 20px;
  max-width: 70em;
}

h1 {
  text-align: center;
}

@media only screen and (max-width: 900px) {
  .tile-grid {
    display: grid;
    grid-template-columns: 1fr;
  }
}

@media only screen and (min-width: 900px) {
  .tile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-column-gap: 20px;
  }
}

.tile img {
  max-width: 100%;
  border-radius: 3px;
  filter: drop-shadow(0 10px 10px #111);
}

.tile > a {
  max-width: 70%;
  margin-left: auto;
  margin-right: auto;
  display: block;
}