/* Base Settings */
body {
  font-family: 'メイリオ', 'Meiryo', sans-serif;
  margin: 10px;
  padding: 0;
  color: #ffffff;
  background: rgba(0,0,0,0.8);
  background-size: auto 100%;
  background-repeat: no-repeat;
  background-position: center;
  animation: fadeIn 1s ease 0s 1 normal;
}

iframe {
 	background: transparent;
   	border: none;
}

.block-container {
  display: flex;
  flex-wrap: wrap;
}

.block {
  border: 2px solid #444; /* 枠線 */
  padding: 10px;           /* 内側の余白 */
  flex: 0 0 350px;
}

.minifont {
  font-size: 14px;
  }

.borderless {
  margin: 0;
  padding: 0;
  border-spacing: 0;
  }

/* Flexbox */
.flex-container {
  display: flex;
}
.flex-container > * {
  flex-grow: 1;
}

a:link, a:visited {
  color: #ffff00;
  display: inline;
}

a:hover {
  color: #00ffff;
}

.button-hover:hover {
  background: linear-gradient(45deg, rgba(128,255,255,0), rgba(128,255,255,0.5));
  color: #00ff00;
}

ul, ol {
  margin: 0;
}

.frame {
  height: 175px;
  width: 175px;
}

h1, h2, h3 {
  vertical-align: middle;
}

/* Animations */
@keyframes fadeIn {
  0% {opacity: 0}
  100% {opacity: 1}
}

/* Popup */
.lb {
  display: flex;
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,0.8);
  opacity: 0;
  transition: .3s opacity ease;
  pointer-events: none;
  z-index: 100;
}
.lb img {
  width: auto !important;
  max-height: 100% !important;
  cursor: pointer;
}
.lb:target {
  opacity: 1;
  pointer-events: auto;
  z-index: 101;
}

.ygg_index {
  max-height: 600px;
}

/* Hamburger Menu */
#menu-btn-check {
  display: none;
}
.menu-content {
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  right: 100%;
  background-color: rgba(0,0,0,0.5);
  transition: all 0.5s;
  z-index: 80;
}

.menu-btn {
  cursor: pointer;
  height: 80px;
  width: 80px;
  background-color: #212121;
  position: absolute;
  bottom: 5%;
  left: 5%;
  z-index: 81;
  opacity: 0.3; /* 普段は半透明 */
  transition: left 0.5s ease, opacity 0.3s ease; /* 移動と共に透明度解除 */
}
.menu-btn.visible {
  opacity: 0.8;
}

.menu-btn span,
.menu-btn span:before,
.menu-btn span:after {
  content: "";
  position: absolute;
  height: 5px;
  width: 65px;
  background: white;
  margin: auto;
}
.menu-btn span {
  top: 50%;
  left: 10%;
}
.menu-btn span:before,
.menu-btn span:after {
  top: 0;
  bottom: 0;
}
.menu-btn span:before {
  transform: translateY(-20px);
}
.menu-btn span:after {
  transform: translateY(20px);
}
#menu-btn-check:checked ~ .menu-content {
  right: 0;
}
#menu-btn-check:checked ~ .menu-btn span {
  background-color: rgba(255, 255, 255, 0);
}
#menu-btn-check:checked ~ .menu-btn span:before {
  bottom: 0;
  transform: rotate(45deg);
}
#menu-btn-check:checked ~ .menu-btn span:after {
  top: 0;
  transform: rotate(-45deg);
}

#menu-btn-check:checked ~ .menu-btn {
  left: 80%; /* 開いたときの位置。適宜調整 */
  opacity: 1;      /* 不透明に */
  transition: left 0.5s ease;
}


/* Menu Window */
.menuwin {
  grid-area: menuwin;
  width: 300px;
  background: rgba(0,0,0,0.8);
}

/* Table Cell */
.table-cell {
  position: relative;
  cursor: pointer;
  padding: 5px;
  color: #ffff00;
}
.table-cell a {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
}
.table-cell:hover {
  filter: brightness(1.5);
}

/* Responsive Design */

 /* 縦長 */
@media screen and (max-width: 768px) {
  .change1 {
    display: none;
  }
  .menuwin {
    display: none;
  }
  .mainwin {
    width: 100%;
    height: 95vh;
  }
  .hamburger-menu {
    width: 80%;
  }
}
 /* 横長 */
@media screen and (min-width: 769px) {
  .change2 {
    display: none;
  }
  .menuwin {
    grid-area: menuwin;
    width: 300px;
    height: 95vh;
  }
  .hamburger-menu {
    display: none;
  }
}



 /* 画像ギャラリー用 */
    .name-container {
        width: 150px;
        display: inline-block;
        vertical-align: middle;
        margin: 15px;
        border: 1px solid #f1f1f1;
        padding: 10px;
        cursor: pointer;
        transition: transform 0.2s, border 0.2s;
    }
    .name-container:hover {
        transform: scale(1.2);
        border: 2px solid #f1f1f1;
        text-align: center;
    }
    .thumbnail-container {
        width: 125px;
        height: 175px;
        display: inline-block;
        vertical-align: middle;
        margin: 15px;
        border: 1px solid #f1f1f1;
        padding: 10px;
        cursor: pointer;
        transition: transform 0.2s, border 0.2s;
    }
    .thumbnail-container:hover {
        transform: scale(1.2);
        border: 2px solid #f1f1f1;
        text-align: center;
    }
    .modal {
        display: none;
        position: fixed;
        z-index: 1;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        overflow: auto;
        background-color: rgba(0,0,0,0.8);
        justify-content: center;
        align-items: center;
    }
    .modal-content {
        margin: auto;
        display: block;
        max-width: 60%;
        max-height: 85%;
        text-align: left;
        width: auto;
        height: auto;
        vertical-align: middle;
        box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
        animation: fadeIn 0.5s;
        padding: 20px;
        color: #fff;
        overflow-y: auto; /* オーバーフローをスクロールに設定 */
    }
    .modal-content:hover {
        cursor: pointer;
    }
    .prev, .next {
        cursor: pointer;
        position: absolute;
        top: 0;
        bottom: 0;
        width: 10%;
        color: white;
        font-weight: bold;
        font-size: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        user-select: none;
        transition: background-color 0.3s;
    }
    .prev {
        left: 0;
    }
    .next {
        right: 0;
    }
    .prev:hover, .next:hover {
        background-color: rgba(0,0,0,0.8);
    }
    .close {
        position: absolute;
        top: 15px;
        right: 35px;
        color: #f1f1f1;
        font-size: 40px;
        font-weight: bold;
        transition: 0.3s;
        z-index: 81;
    }
    .close:hover,
    .close:focus {
        color: #bbb;
        text-decoration: none;
        cursor: pointer;
    }
    .expanded-img-container {
        display: none;
        position: fixed;
        z-index: 2;
        padding-top: 30px;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0,0,0,0.9);
        justify-content: center;
        align-items: center;
    }
    .expanded-img-content {
        margin: auto;
        display: block;
        max-width: 90%;
        max-height: 90%;
        width: auto;
        height: auto;
    }
    .expanded-img-content img {
        max-width: 80%;
        max-height: 80%;
        align-items: center;
    }
    .expanded-img-close {
        position: absolute;
        top: 15px;
        right: 35px;
        color: #f1f1f1;
        font-size: 40px;
        font-weight: bold;
        transition: 0.3s;
    }
    .expanded-img-close:hover,
    .expanded-img-close:focus {
        color: #bbb;
        text-decoration: none;
        cursor: pointer;
    }