html {
  font-family: serif;
  font-feature-settings: "palt";
  font-size: 1rem;
  scroll-padding-top: 200px;
  text-align: justify;
  -webkit-text-size-adjust: 100%;
}

#nav {
  align-items: center;
  background-color: white;
  border-bottom: 1px solid #d0d0d0;
  color: black;
  display: flex;
  height: 70px;
  padding: 0 max(30px, calc(50% - 300px));
  position: fixed;
  top: -70px;
  transition: top 200ms ease-out;
  width: 100%;
  z-index: 1;
}
@media (min-height: 420px) {
  #nav.on {
    top: 0;
  }
}
#nav a:hover {
  opacity: 0.5;
}
#nav a.top {
  aspect-ratio: 1 / 1;
  height: 100%;
}
#nav a.prev,
#nav a.next {
  color: inherit;
  padding: 20px 8px;
  text-decoration: none;
}
#nav a.prev::before {
  content: "〈 ";
}
#nav a.next::after {
  content: " 〉";
}

#unofficial {
  background-color: white;
  border-bottom: 1px solid #d0d0d0;
  color: black;
  padding: 9px max(30px, calc(50% - 300px)) 11px;
}
#unofficial a {
  color: inherit;
}

h1 {
  background-color: #365569;
  background-image: url("/asobase/hero.avif");
  background-repeat: repeat;
  background-size: 150px 150px;
  border-bottom: 1px solid #d0d0d0;
  color: white;
  font-size: 2rem;
  line-height: 1;
  padding: 410px 30px 40px;
  text-align: center;
  text-shadow: 0 0 10px #365569;
  width: 100%;
}
h1 small {
  display: block;
  font-size: 1rem;
  font-weight: normal;
  transform: translate(-40px, -5px);
}

#synopsis {
  background-color: white;
  border-bottom: 1px solid #d0d0d0;
  color: black;
  padding: 30px max(30px, calc(50% - 300px)) 30px;
}
#synopsis > :not(:last-child) {
  margin-bottom: 1rem;
}
#synopsis iframe {
  background-color: #d0d0d0;
  border: 0;
  display: block;
  margin-inline: clamp(-30px, 50% - 300px, 0px);
  width: min(600px, 100vw);
}

#album {
  background-color: white;
  border-bottom: 1px solid #d0d0d0;
  color: black;
  padding: 30px max(30px, calc(50% - 300px)) 30px;
}
#album > :not(h2, :last-child) {
  margin-bottom: 1rem;
}
#album h2 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 1.3rem;
  text-align: center;
}
#album a {
  color: inherit;
}
#album .tiles {
  display: grid;
  grid-auto-flow: dense;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
}
#album .tile {
  aspect-ratio: 1 / 1;

  /*
   * "border: 1px solid transparent" has similar effect to "gap: 2px".
   * However, the gap property yields broken grid when rectangular tiles
   * are present. Indeed, the aspect ratio of a tile spanning over three
   * columns and two rows is not 3:2 due to gaps. The border property is
   * free of this problem.
   */
  border: 1px solid transparent;

  display: block;
  overflow: hidden;
}
#album .tile:hover {
  opacity: 0.7;
}
#album .tile3x2 {
  aspect-ratio: 3 / 2;
  grid-column: span 3;
  grid-row: span 2;
}
#album .tile2x2 {
  aspect-ratio: 2 / 2;
  grid-column: span 2;
  grid-row: span 2;
}
#album .tile1x2 {
  aspect-ratio: 1 / 2;
  grid-column: span 1;
  grid-row: span 2;
}
#album .tile2x1 {
  aspect-ratio: 2 / 1;
  grid-column: span 2;
  grid-row: span 1;
}
#album .tile img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}
#album .youtube {
  position: relative;
}
#album .youtube::before {
  background-image: url("data:image/svg+xml;utf8,<svg version='1.1' viewBox='0 0 68 48' xmlns='http://www.w3.org/2000/svg'><path d='M66.52,7.74c-0.78-2.93-2.49-5.41-5.42-6.19C55.79,.13,34,0,34,0S12.21,.13,6.9,1.55 C3.97,2.33,2.27,4.81,1.48,7.74C0.06,13.05,0,24,0,24s0.06,10.95,1.48,16.26c0.78,2.93,2.49,5.41,5.42,6.19 C12.21,47.87,34,48,34,48s21.79-0.13,27.1-1.55c2.93-0.78,4.64-3.26,5.42-6.19C67.94,34.95,68,24,68,24S67.94,13.05,66.52,7.74z' fill='%23f03'/><path d='M 45,24 27,14 27,34' fill='%23fff'/></svg>");
  background-position: center;
  background-repeat: no-repeat;
  bottom: 8px;
  content: "";
  height: 24px;  /* Keep aspect ratio to 68:48 */
  position: absolute;
  right: 8px;
  width: 34px;
}

#lyrics {
  background-color: white;
  color: black;
  padding: 30px max(30px, calc(50% - 300px)) 30px;
}
#lyrics > :not(h2, :last-child) {
  margin-bottom: 1rem;
}
#lyrics h2 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 1.3rem;
  text-align: center;
}