@charset "utf-8";

/* header */
.header {
  background-color: transparent;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  display: flex;
  align-items: center;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
}
.header-content {
  display: flex;
  width: 100%;
  margin: 0 auto;
  padding: 0 2.604vw;
  box-sizing: border-box;
}
.header-logo {
  width: 13.385vw;
}
.header-logo-link {
  display: block;
}
.header-logo-link .logo-text {
  position: relative;
  top: -7px;
}
.header-links {
  display: flex;
  align-items: center;
  gap: 0.521vw;
  /* 20px; */
  margin-left: auto;
}
.header-link {
  border-radius: 50px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 1.901vw;
  transition: border-color 0.25s;
}
.header-link:hover {
  border-color: #d9dad8;
}
.header-link-text {
  background-repeat: no-repeat;
  background-position: 0 0;
  background-size: contain;
  display: block;
  height: 0.807vw;
  transition: background-image 0.25s;
}
.header-official-lounge-link {
  width: 7.813vw;
}
.header-official-lounge-link-text {
  background-image: url(../images/official-lounge-text.png);
  width: 4.557vw;
}
.header-link:hover .header-official-lounge-link-text {
  background-image: url(../images/official-lounge-text-active.png);
}
.header-youtube-link {
  width: 6.51vw;
}
.header-youtube-link-text {
  background-image: url(../images/youtube-text.png);
  width: 2.24vw;
}
.header-link:hover .header-youtube-link-text {
  background-image: url(../images/youtube-text-active.png);
}
.header-background-music {
  display: flex;
  align-items: center;
}
.button-bgm {
  border: 0;
  background-color: transparent;
  background-repeat: no-repeat;
  background-position: 0 0;
  background-size: contain;
  width: 3.646vw;
  height: 2.109vw;
}
.button-ready-bgm {
  background-image: url(../images/bgm-ready-dark.png);
}
.button-pause-bgm {
  display: none;
  background-image: url(../images/bgm-pause-dark.png);
}
.button-play-bgm {
  display: none;
  background-image: url(../images/bgm-play-dark.png);
}
.header-background-music.playing .button-ready-bgm,
.header-background-music.playing .button-pause-bgm {
  display: none;
}
.header-background-music.playing .button-play-bgm {
  display: block;
}
.header-background-music.pause .button-ready-bgm,
.header-background-music.pause .button-ready-bgm {
  display: none;
}
.header-background-music.pause .button-pause-bgm {
  display: block;
}