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: 9;
}
@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: #d0d0d0;
  background-image: url("/hanakaruta/hero.avif");
  background-position: 50% 30%;
  background-size: cover;
  border-bottom: 1px solid #d0d0d0;
  color: black;
  font-size: 2rem;
  line-height: 1;
  padding: 410px 30px 40px;
  text-align: center;
  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);
}
#synopsis a {
  color: inherit;
}

@keyframes mugen-torifuda {
    0% { opacity: 0; transform: rotateZ(0deg) rotateY(-90deg) translateY(30px); }
    1% { opacity: 0; transform: rotateZ(0deg) rotateY(-90deg) translateY(30px); }
   10% { opacity: 1; transform: rotateZ(4deg) rotateY(-20deg) translateY(20px); }
   90% { opacity: 1; transform: rotateZ(-4deg) rotateY(20deg) translateY(0px); }
  100% { opacity: 0; transform: rotateZ(-4deg) rotateY(90deg) translateY(-50px); }
}
@keyframes mugen-caption {
    0% { opacity: 0; translate: 0 3px; }
    1% { opacity: 0; translate: 0 3px; }
    8% { opacity: 1; translate: 0 0; }
   92% { opacity: 1; translate: 0 0; }
  100% { opacity: 0; translate: 0 -6px; }
}
#mugen {
  background-color: white;
  border-bottom: 1px solid #d0d0d0;
  color: black;
  overflow: clip;
  padding: 30px max(30px, calc(50% - 300px)) 30px;
  perspective: 1000px;
}
#mugen h2 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 1.3rem;
  position: relative;
  text-align: center;
  z-index: 1;
}
#mugen p {
  position: relative;
  z-index: 1;
}
#mugen .torifuda {
  animation: 5s linear infinite mugen-torifuda;
  background-color: white;
  box-shadow: 0 0 0 1px #258559, 0 0 0 8px #26a269, 0 0 0 9px #8bd1b1, 0 0 0 10px #258559;
  color: black;
  direction: rtl;
  display: grid;
  grid-auto-flow: column;
  grid-template-columns: 1fr 1fr 1fr 0;
  grid-template-rows: repeat(5, 1fr);
  height: 140px;
  left: 50%;
  line-height: 1;
  margin: 30px 0 40px;
  padding: 16px 14px;
  position: relative;
  translate: -50%;
  width: 100px;
  z-index: 0;
}
#mugen .torifuda span {
  align-content: center;
  text-align: center;
}
#mugen .caption {
  animation: 5s linear infinite mugen-caption;
  text-align: center;
}
#mugen.off .torifuda,
#mugen.off .caption {
  animation-play-state: paused;
}

#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;
  background-clip: padding-box;
  background-color: #d0d0d0;

  /*
   * "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: clip;
}
#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;
  border-bottom: 1px solid #d0d0d0;
  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;
}
#lyrics ruby {
  display: inline-flex;
}
#lyrics ruby rt {
  font-size: 1rem;
  font-variant: normal;
  line-height: inherit;
}
#lyrics ruby rt::before {
  content: "（";
}
#lyrics ruby rt::after {
  content: "）";
}

#credit {
  background-color: white;
  color: black;
  padding: 30px max(30px, calc(50% - 300px)) 30px;
}
#credit > :not(h2, h3, :last-child) {
  margin-bottom: 1rem;
}
#credit h2 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 1.3rem;
  text-align: center;
}
#credit h3 {
  font-size: 1rem;
  font-weight: bold;
  margin-bottom: 2px;
}
#credit ul {
  display: inline-flex;
  column-gap: 10px;
  flex-wrap: wrap;
  list-style: none;
  padding-left: 0;
}