/*全てのページに適用される設定*/
html {
    font-size: 16px;
    font-family: sans-serif;
}
* {
    box-sizing: border-box;
}
body {
    margin: 0 0 0;
}
p,li,td {
    line-height: 1.7;
}
img {
    max-width: 100%;
}
/*全てのページに適用--ヘッダー*/
nav {
    margin-top: 5px;
    margin-bottom: 0;
    padding-top: 5px;
    padding-bottom: 20px;
    background-color: #255758;
    color: #FFFFFF;
    text-align: center;

    a:link {
        color: #ffffff;
        text-decoration: none;
    }
    a:visited {
        color: #ffffff;
        text-decoration: none;
    }
    a:hover {
        color: #ffffff;
        text-decoration: none;
    }
    a:active {
        color: #ffffff;
        text-decoration: none;
    }
}

.nav ul {
    margin: 30px 0 0 0;
    padding: 0;
    list-style-type: none;

    display: flex;
    justify-content: center;
    gap: 40px;
}
.preserve-space {
  white-space: pre-wrap;
}
.name {
    text-align: center;
    padding-top: 10px;
    margin-top: 0%;
    margin-bottom: 5px;
    border-top: 13px solid #255758  ;
}
.abautjoin {
    text-align: center;
}
/*全てのページに適用--メイン*/
main {
    margin: 90px auto 90px auto;
    max-width: 1000px;
}
main h2  {
    margin: 60px 0 20px 0;
    border-bottom: 2px solid #255758;
    padding: 0 0 5px 0;
    color: #255758;
    font-size: 1.3rem;
}
main h4 {
    padding: 0 0 0 0;
    margin: 0 0 0 0;
    border: 0 0 0 0;
    margin-top: 5px;
}
main h4 {
    margin-top: 0;
    margin-bottom: 0;
}
.jisseki {
    margin-bottom: 0;
}
/*全てのページに適用--ヒーロー*/
.hero {
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    color: #FFFFFF;
    text-align: center;
    font-family: "メイリオ";
    font-size: 50px;
    width: 100%;
    height: auto;
    display: block;
    padding-top: 0%;
}
.hero.index {
    font-family: serif; 
    padding: 287px 0;
    background-image: url(../images/home-hero.jpg);
    height: auto;
    width: 100%;
}
.pc-text {
    display: block;
}
.mobile-text {
    display: none;
}
/*全てのページに適用--フッター*/
.gotoppng {
    width: 200px ;
    height: auto;
    position: fixed;
    bottom: 20px ;
    right: 20px ;
    z-index: 1000;
    transition: transform 0.3s ease;
}
.gotoppng:hover {
    transform: scale(1.2); /* ホバー時に1.2倍に拡大 */
}

.social-icons a {
  color: #ffffff;
  font-size: 35px;
  margin: 0 10px;
  text-decoration: none;
  transition: color 0.3s;
}

.social-icons a:hover {
  color: #C13584; 
}
.copyright {
    margin-top: 20px;
    margin-bottom: 0;
    padding-top: 35px;
    padding-bottom: 30px;
    background-color: #255758;
    color: #FFFFFF;
    text-align: center;
}
/*個別のスタイル*/
/*index.html*/

.history th, .history td {
    border: 1px solid #DBDBDB;
    padding: 20px;
}
.history {
    a:link {
        color: #3d6dff;
        text-decoration: none;
    }
    a:vsited {
        color: #8e3dff;
        text-decoration: none;
    }
    a:hover {
        color: #3d6dff;
        text-decoration: underline;
    }
    a:active {
        color: #f23dff;
        text-decoration: none;
    }
}

.teachers {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 30px;
}
.teacher {
    background: #fff;
      padding: 20px;
      border-radius: 10px;
      width: 100%;
      box-shadow: 0px 0px 13px rgba(0,0,0,0.15);
      border: 2px solid #255758;
}
/*join.html*/
.boshuchirasi {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

/*モバイル対応*/
@media (max-width: 767px) {
    .nav ul {
        flex-wrap: wrap;
        gap: 20px;
    }
    main {
        padding: 0 2%;
    }

    /*index.html*/
    .hero.index {
        padding: 28vh 0;
    }
    .teachers {
        grid-template-columns: 1fr 1fr;
    }
    .pc-text {
    display: none;
    }
    .mobile-text {
        display: block;
    }
    /*join.html*/
    .boshuchirasi {
        grid-template-columns: 1fr;
    }
    .gotoppng {
    width: 250px ;
    height: auto;
    position: fixed;
    bottom: 20px ;
    right: -17% ;
    z-index: 1000;
    transition: transform 0.3s ease;
    }
}
@media (max-width: 767px), (hover: none) and (pointer: coarse) {
    .gotoppng:hover {
    transform: none
    }
    .gotoppng:active {
        transform: scale(1.2);
    }
}