body {
  margin: 0;
  font-family: sans-serif;
  color: black;
  background-color: white;
}

img {
  -webkit-user-drag: none;
}

.background {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  background-size: cover;
  background-position: center;
  height: 100vh;
  width: 100%;
  user-select: none;
}

.icon-link {
  position: absolute;
  top: 1.5vw;
  right: 1.5vw;
  display: inline-block;
  text-decoration: none;
  /* 下線を消す */
  cursor: pointer;
  /* カーソルをポインタに変更 */
}

.discord-button {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 15px;
  background-color: #6572ff;
  border-radius: 15px;
  font-size: 2vh;
  color: white;
  font-weight: bold;
  transition: background-color 0.3s, transform 0.3s;
}

.discord-button:hover {
  background-color: #4f65c8;
  transform: translateY(1px);
}

.discord-icon {
  font-size: 2.5vh;
  color: white;
  transition: transform 0.3s;
}

.discord-button span {
  font-size: 2vh;
  user-select: none;
  /* テキスト選択を無効化 */
}

.logo {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

.logo img {
  width: 48.75%;
  max-width: 100%;
  height: auto;
  position: absolute;
  top: 11vh;
}

.styled {
  font-family: "JF-AyuMin18", sans-serif;
  position: relative;
  top: 10vh;
  display: block;
  margin: 0 auto 1vh;
  border: 3px solid #000;
  width: 40vw;
  max-width: 700px;
  min-width: 50px;
  height: 7.5vh;
  min-height: 40px;
  max-height: 70px;
  letter-spacing: 2px;
  line-height: 5vh;
  font-size: 1.5vw;
  text-align: center;
  color: #fff;
  text-shadow: 2px 2px 2px #000;
  background-color: #777;
  box-shadow:
    inset 2px 2px 3px rgba(255, 255, 255, 0.6),
    /* 内側の明るい影 */
    inset -3px -3px 2px rgba(64, 64, 64, 0.6);
  /* 内側の暗い影 */
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.styled:hover {
  background-color: #949494;
  border: 3px solid #fff;
}

.styled:active {
  box-shadow: inset -2px -2px 3px rgba(255, 255, 255, 0.6),
    inset 2px 2px 3px rgba(0, 0, 0, 0.6);
}

.button-group {
  display: flex;
  justify-content: space-between;
  gap: 2%;
  width: 40vw;
  max-width: 700px;
  margin: 5vh auto 0;
}

.tooltip {
  font-family: "JF-AyuMin18", sans-serif;
  margin: 7px;
  font-size: 1.2vw;
  position: absolute;
  background-color: black;
  color: white;
  /* テキストが見えるように色を設定 */
  padding: 10px;
  border: 2px solid #2c0a65;
  outline: 3px solid #000;
  border-radius: 5px;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  visibility: hidden;
  opacity: 0;
  /* アニメーションのために初期状態は透明 */
  z-index: 1000;
}

.tooltip.visible {
  visibility: visible;
  opacity: 1;
  /* 表示状態で不透明に */
}

@media (max-width: 430px) {
  .logo img {
    position: relative;
    top: 0vw;
    height: auto;
    width: 90vw;
  }

  .styled {
    font-size: 2.5vw;
    width: 80vw;
    height: 8vh;
  }

  .button-group {
    width: 82.5vw;
    gap: 0;
  }

  .button-group .styled {
    width: 48%;
  }
}

.fade-in {
  opacity: 0;
  transition: opacity 1s;
  /* フェードインの速度を調整 */
}

.fade-in.visible {
  opacity: 1;
}

@font-face {
  font-family: "PTSerif";
  src: url("./fonts/PTSerif-BoldItalic.ttf") format("truetype");
}

@font-face {
  font-family: "Barlow_SemiBold";
  src: url("./fonts/Barlow-SemiBold.ttf") format("truetype");
}

@font-face {
  font-family: "JF-AyuMin18";
  src: url("./fonts/JF-Dot-AyuMin18.ttf") format("truetype");
}

#single-screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10;
}

.pre {
  color: rgb(0, 0, 0);
  background-color: rgba(255, 255, 255, 0.8);
  padding: 20px; border-radius: 12px;
}