/* --- 「もっと詳しく」ボタンの基本スタイル --- */
.btn-read-more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 28px;
  background-color: #1B325F; /* テーマカラー（ネイビー） */
  color: #ffffff;            /* 文字色（白） */
  font-weight: bold;
  text-decoration: none;     /* 下線を消す */
  border-radius: 50px;       /* 角を丸くして柔らかい印象に */
  transition: all 0.3s ease; /* アニメーションを滑らかにする設定 */
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); /* 軽い影をつける */
}

/* マウスを乗せた時（ホバー時）のスタイル */
.btn-read-more:hover {
  background-color: #112244; /* 少し暗いネイビーに変更 */
  color: #ffffff;
  transform: translateY(-3px); /* ボタン全体を3px上に浮かす */
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15); /* 影を少し濃く・広くする */
}

/* 矢印（→）のスタイル */
.btn-read-more .arrow {
  margin-left: 8px; /* 文字との間に余白を作る */
  transition: transform 0.3s ease; /* 矢印の動きを滑らかにする */
}

/* マウスを乗せた時の矢印の動き */
.btn-read-more:hover .arrow {
  transform: translateX(5px); /* 矢印だけ右に5pxスライドさせる */
}












/* --------------------------------------
  Header
-------------------------------------- */
.navbar{
  padding: 0 0;
}
.navigation {
  padding: 20px 40px;
  display: flex;
  width: 100%;
  background-color: #3a5482;
  color: #FFF7F7;
  font-family: "Piazzolla", "Times New Roman", "YuMincho",
    "Hiragino Mincho ProN", "Yu Mincho", "MS PMincho", serif;
  font-weight: 700;
  line-height: 1.15;
}
.header-logo {
  display: flex;
  align-items: center;
  width: 100%;
}
.header-logo-left {
  
}
.header-logo-right {
  padding-left: 20px;
  text-align: center;

}
.header-logo-right-top > a {
  color: #FFF7F7;
  font-size: 1rem;
}
.header-logo-right-top > a:hover,
.header-logo-right-top > a:after {
  color: #FFF7F7;
}
.header-logo-right-bottom > a {
  color: #FFF7F7;
  font-size: 1.5rem;
}
.header-logo-right-bottom > a:hover,
.header-logo-right-bottom > a:after {
  color: #FFF7F7;
}
.header-nav-menu-item-top {
  font-size: 1.5rem;
  margin-bottom:5px;
  text-align: center;
}
    
.header-nav-menu {
  display: flex;
}
.header-nav-menu-item > a {
  display : table-cell;
  color: #FFF7F7;
  padding: 5px 20px;
  border-radius: 0.5rem;
  text-decoration: none;
}
.header-nav-menu-item > a > span {
  display: flex;
  color: #FFF7F7;
}
.header-nav-menu-item > a:hover,
.header-nav-menu-item > a:focus, 
.header-nav-menu-item > a > span :hover,
.header-nav-menu-item > a > span :focus  {
  background-color: #506587;
}
.header-nav-menu-item-top {
  font-size: 1.5rem;
  margin-bottom:5px;
  text-align: center;
}
.header-nav-menu-item-bottom {
  font-size: 0.8rem;
  text-align: center;
}


.hero-section {
  background-color: #ffffff;
  background-image: url("../images/HP-wide.jpg");
  background-size: cover;
  background-position: center;
  padding: 80px 0;
}
.section-title {
  font-weight: bold;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 10px;
}
.section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background-color: #0d6efd; /* Bootstrapのプライマリカラー */
}  
/* 画像を正方形に統一する魔法のCSS */
.equipment-img {
  width: 100%;
  aspect-ratio: 1 / 1;  /* 縦横比を1:1（正方形）に固定 */
  object-fit: cover;    /* 画像の比率を保ったまま、はみ出た部分を切り取る */
  background-color: #f8f9fa; /* 画像がない場合の背景色 */
}

/* カード自体の微調整 */
.equipment-card {
  transition: transform 0.2s ease-in-out;
}
.equipment-card:hover {
  transform: translateY(-5px); /* マウスオーバーで少し浮き上がるエフェクト */
}


/* --------------------------------------
  Main - Home
-------------------------------------- */

.main-container-pickup {
  margin: 0 auto;
  width: 40%;
}
      .main-container-pickup-phrase {
      }
      .main-container-pickup-items {
        display: flex;
      }
            .main-container-pickup-items-item {
              width:25%;
              margin: 0 auto;
              color:#000000;
              text-align: center;
              font-weight: bold;
            }
            .main-container-pickup-items-item > a > img:hover {
              opacity: 0.5;
            }

/* ニュースのバッジ幅を統一するCSS */
.news-badge {
  width: 60px;          /* バッジの幅を固定（文字数に合わせて調整してください） */
  text-align: center;   /* 文字をバッジの中央に揃える */
  display: inline-block; /* 幅を指定するために必要（Bootstrapのbadgeはデフォルトで設定されていますが念のため） */
}

/* --------------------------------------
  Research
-------------------------------------- */

.main-research-item-research {
  max-width: 900px;
  margin: 0 auto;
  margin-bottom: 100px; 
  font-size: 1.2rem;
}
.main-research-item-research > h2 {
  text-align: center;
  text-decoration:underline 10px rgb(255, 245, 130); 
  margin-bottom: 50px;
  line-height:60px;
}

.main-research-item-haizoku {
  max-width: 900px;
  margin: 0 auto;
  margin-bottom: 100px;
  padding-top: 200px;
}


.main-research-item-text {
  font-size: 1.2rem;
  margin-bottom: 10%;
}
      .main-research-item-text > h3 {
        text-align: center;
      }
      .main-research-item-text > h4 {
        font-size: 1.5rem;
        border-bottom: 5px solid rgb(209, 150, 226); 
      }
      .main-research-item-text > ul {
        list-style:disc;
        margin-left: 50px;
      }
      .main-research-item-text > ul > li {
        padding: 3px 0;
      }
.research-img {
  width: 100%;
}
.card-body > a {
  vertical-align: bottom;
}

/* --------------------------------------
  Members
-------------------------------------- */
.main-members {
  margin: 0 auto;
  max-width: 900px;
}
.main-members-staff {
  margin-bottom: 50px;
}
      .main-members-staff > h3 {
        margin-left: 25px;
      }
      .main-members-staff-iwasaki {
        margin-left: 50px;
      }
      .main-members-staff-iwasaki > p > a{
        text-decoration: none;
        color:#000000;
        font-size: 1.5rem;
        font-weight: bold;
      }
      .main-members-staff-iwasaki > p > a:hover {
        opacity: 0.5;
      }
.main-members-students {
  margin-bottom: 50px;
}
      .main-members-students > h3 {
        margin-left: 25px;
      }
      .main-members-students > ul {
        margin-left: 50px;
        list-style: none;
      }
.main-members-alumni {
  margin-bottom: 50px;
}

.sub-members {
  margin: 0 auto;
  max-width: 900px
}
.sub-members > h2 {
  text-align: center;
  margin: 100px 0;
  font-size: 3rem;
}
.sub-members-container {
  margin-bottom: 100px;
}
.sub-members-title {
  text-align: left;
}
      .sub-members-title > h3 {
        border-bottom: 5px solid rgb(255, 245, 130);
        text-align: left;
      }
.sub-members-carrier {
  margin-left: 20px;
}
      .sub-members-carrier > p {
        margin-left: 50px;
      }



/* --------------------------------------
  Main - Activities
-------------------------------------- */
.main-activities{
  padding-top: 10%;
}

.main-activities-item{
  margin-bottom: 1%;
}

.main-activities-year {
  width: 100%;
}
.main-activities-year > h3 {
  border-bottom: 5px solid rgb(255, 245, 130);
}

.main-activities-paper-cover{
  display: flex;
  padding-left: 0%;
  margin-top: 2%;
  margin-bottom: 3%;
  
}
.main-activities-paper-cover-explanation{
  top: 50%;
  padding-left: 2%;
}    

/* --------------------------------------
  Equipment
-------------------------------------- */



/* --------------------------------------
  Gallery
-------------------------------------- */


/* --------------------------------------
  Footer
-------------------------------------- */
.footer {
  background-color: #3a5482;
  color: #FFF7F7;
  padding: 10px 40px;
}

.footer-left {
  margin-left:50px;
  width:250px;
}
      .footer-left-phrase {
        font-size: 2rem;
      }
            .footer-left-phrase-S {
              color:#000000;
            }
            .footer-left-phrase-I {
              color:#ff0000;
            }
      .footer-left-logo {}
            .footer-left-logo-img {
              width:300px;
            }


.footer-right {
  display:flex;
  margin: 0 0 0 auto;
  margin-right:50px;
}
      .footer-right-left {}
            .footer-right-left-contact {
              font-size: 2rem;
              margin-bottom: 10px;
            }
            .footer-right-left-contact-items {
              margin-left: 30px;
              font-size: 1.2rem;
            }
                  .footer-right-left-contact-items-1 {
                    margin-bottom: 5px;
                  }
                  .footer-right-left-contact-items-2 {
                    margin-bottom: 5px;
                  }
                  .footer-right-left-contact-items-3 {
                    margin-bottom: 5px;
                  }
                  .footer-right-left-contact-items-4 {
                    margin-bottom: 15px;
                  }
                  .footer-right-left-contact-items-5 {
                    margin-bottom: 5px;
                  }
                  .footer-right-left-contact-items-6 {
                    margin-bottom: 5px;
                  }
                  .footer-right-left-contact-items-7 {
                    margin-bottom: 5px;
                  }
                        .footer-right-left-contact-items-7-url2 {
                          color: #ffffff;
                        }
                        .footer-right-left-contact-items-7-url2:hover {
                          color: #a0a0a0;
                        }


      .footer-right-right {
        margin-left:50px;
      }
            .footer-right-right-top {
              margin-bottom:50px;
            }
                  .footer-right-right-top-link {
                    font-size: 2rem;
                    margin-bottom: 10px;
                  }
                  .footer-right-right-top-link-items {
                    margin-left: 30px;
                    font-size: 1.2rem;
                  }
                        .footer-right-right-top-link-items-1 {
                          margin-bottom: 15px;
                        }
                              .footer-right-right-top-link-items-1-url {
                                color: #ffffff;
                              }
                               .footer-right-right-top-link-items-1-url:hover {
                                color: #a0a0a0;
                              }
                        .footer-right-right-top-link-items-2 {
                          margin-bottom: 15px;
                        }
                              .footer-right-right-top-link-items-2-url {
                                color: #ffffff;
                              }
                               .footer-right-right-top-link-items-2-url:hover {
                                color: #a0a0a0;
                              }
                        .footer-right-right-top-link-items-3 {
                          margin-bottom: 15px;
                        }
                              .footer-right-right-top-link-items-3-url {
                                color: #ffffff;
                              }
                               .footer-right-right-top-link-items-3-url:hover {
                                color: #a0a0a0;
                              }

            .footer-right-right-bottom {
              margin-bottom:50px;
            }
                  .footer-right-right-bottom-sns {
                    font-size: 2rem;
                    margin-bottom: 10px;
                  }
                  .footer-right-right-bottom-sns-items {
                    display: flex;
                    font-size: 2.5rem;
                  }
                        .footer-right-right-bottom-sns-items-1, .footer-right-right-bottom-sns-items-1 > a  {
                          color: #ffffff;
                          margin-left: 20px;
                        }
                        .footer-right-right-bottom-sns-items-1 > a:hover  {
                          color: #000000;
                          margin-left: 20px;
                        }
                        .footer-right-right-bottom-sns-items-2, .footer-right-right-bottom-sns-items-2 > a {
                          color: #ffffff;
                          margin-left: 20px;
                        }
                        .footer-right-right-bottom-sns-items-2 > a:hover  {
                          color: #e02121;
                          margin-left: 20px;
                        }
                        .footer-right-right-bottom-sns-items-3, .footer-right-right-bottom-sns-items-3 > a {
                          color: #ffffff;
                          margin-left: 20px;
                        }
                        .footer-right-right-bottom-sns-items-3 > a:hover  {
                          color: #de34b9;
                          margin-left: 20px;
                        }

                        

.footer-copyright {
  color: #9C9DA5;
  margin: 0 auto;
  text-align: center;
}

.footer-contact{
  width: 40%;
}

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

.footer-form-input{
  width: 49%;
}

.footer-form-input + .footer-form-input{
  margin-left: 2%;
}

.footer-info{
  width: 60%;
}

.footer-button {
  background: #53687E;
  color: #fff7f7;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-decoration: none;
  padding: 2%;
  border: none;
  border-radius: 3px;
}
/*
display: inline-block;
  padding: 10px 15px;
  border: none;
  border-radius: 3px;
  color: #FFF7F7;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-decoration: none;
*/

.footer-form-textarea {
  width: 100%;
}

.footer-form-input {
  position: relative;
}

.footer-form-input i {
  position: absolute;
  top: 12px;
  left: 16px;
  color: #fff7f7;
}

.footer-form-input input {
  padding: 10px 15px 10px 40px;
}

.footer-form-textarea textarea {
  height: 150px;
  padding: 10px 15px;
  resize: none;
}

.footer-form-input input,
.footer-form-textarea textarea {
  width: 100%;
  background-color: transparent;
  border: 1px solid #C2B2B4;
  border-radius: 5px;
  color: #FFF7F7;
}

.footer-form-input input::placeholder,
.footer-form-textarea textarea::placeholder {
  color: #9C9DA5;
}

.footer-form-input input:hover,
.footer-form-input input:focus,
.footer-form-textarea textarea:hover,
.footer-form-textarea textarea:focus {
  background-color: rgba(0, 0, 0, 10%);
}

.footer-form-input input:focus-visible,
.footer-form-textarea textarea:focus-visible {
  outline: 1px solid #C2B2B4;
  border: 1px solid #C2B2B4;
}

.footer-info-nav-menu ul {
  font-family: "Piazzolla", "Times New Roman", "YuMincho",
    "Hiragino Mincho ProN", "Yu Mincho", "MS PMincho", serif;
}

.footer-info-nav-menu a {
  color: #FFF7F7;
  font-size: 1.2rem;
  font-weight: 700;
}

.footer-info-nav-menu a:hover,
.footer-info-nav-menu a:focus {
  color: #9C9DA5;
}

.footer-info-follow a {
  color: #9D9DA5;
  font-size: 1.5rem;
}

.footer-info-follow a:hover,
.footer-info-follow a:focus {
  color: #81838D;
}



/* --------------------------------------
  Sub - profile
-------------------------------------- */

.container-profile {
  max-width: 800px;
  margin: 0 auto;
  margin-bottom: 100px;
}

.main-profile {
  background-color: #FFF;
  padding-top: 10%;
}
.main-profile-container {
  width: 100%;
  margin-bottom: 50px;
}
.main-members-iwasaki-banner {
  height: 40px;
}
.main-profile-title > h2 {
  text-align: left;
  border-bottom: 1px solid rgb(0, 0, 0);
}

.main-profile-item {
  display: flex;
}
      .main-profile-item-year {
        width: 25%;
        margin-left:20px;
      } 
            .main-profile-item-year > h4 {
              margin-top: 0;
              font-size: 20px;
            } 
      .main-profile-item-details {
        width: 75%;
        margin-left: 10px
      }
            .main-profile-item-details-1 {
              margin: 0 0 10px 0;
            }
            .main-profile-item-details-2 {
              margin: 0 0 10px 0;
            }
            .main-profile-item-details-3 {
              margin: 0 0 30px 0;
            }
                  .main-profile-item-details-3 > a:hover {
                    opacity: 0.3;
                  }


.main-profile-addition-skills ul {
  padding-left: 20px;
  list-style: disc;
}

.main-profile-addition-follow{
  text-align: center;
  
}

.main-profile-addition-follow a {
  color: #C2B2B4;
}

.main-profile-addition-follow a:hover,
.main-profile-addition-follow a:focus {
  color: #AB9698;
}




.main-grants-awards{
  padding-top: 10%;
}

.main-grants-awards-grants-item{
  display: flex;
}
.main-grants-awards-grants-item-year{
  width: 10%;
  padding-left: 0;
  margin-right: 5%;
} 
.main-grants-awards-grants-item-details{
  width: 90%;
}

.main-grants-awards-awards-item{
  display: flex;
}
.main-grants-awards-awards-item-year{
  width: 10%;
  padding-left: 0;
  margin-right: 5%;
} 
.main-grants-awards-awards-item-details{
  width: 90%;
}

.main-grants-awards-container{
  display: flex;
  margin-left: 10%;
  margin-right: 10%;
}



/* --------------------------------------
  Sub - research
-------------------------------------- */
.sub-research {
  max-width: 900px;
  margin: 0 auto;
}
.sub-research-title {
  text-align: center;
  margin-bottom: 50px;
}
.sub-research-title > h2 > span {
  font-size: 1rem;
}
.sub-subtitle-black{
  position: relative; 
  font-size: 1.4rem;
  font-weight: bold;
  padding: 0.5rem 0rem 0.5rem 0.8rem;
  margin-bottom: 1rem;
}
.sub-subtitle-black:before {
  position: absolute; 
  background-color: #121212;
  border-radius: 1rem;
  content: "";
  left: 0%;
  bottom: 10%;
  width: 0.5rem;
  height: 100%;
}

/* ==============================================
   スマホ向け表示調整（画面幅1024px以下の場合に適用）
============================================== */
@media screen and (max-width: 1024px) {
  /* 1. 全体の横揺れ防止（安全対策） */
  html, body {
    overflow-x: hidden;
  }

  /* 2. ヘッダーの調整 */
  .navigation {
    padding: 10px 15px; /* 左右の余白を狭くする */
    flex-direction: column; /* 縦並びに変更 */
    align-items: center;
  }
  .header-logo {
    justify-content: center;
    margin-bottom: 10px;
  }
  .header-logo-right {
    padding-left: 10px;
  }
  .header-logo-right-bottom > a {
    font-size: 1.1rem; /* スマホ用に文字サイズを少し小さく */
  }

  /* 3. Pick up contentsの調整（スマホだと40%では潰れてしまうため） */
  .main-container-pickup {
    width: 90%;
  }

  /* 4. フッターの調整（横並びを解除して縦並びに） */
  .footer {
    padding: 30px 20px;
  }
  .footer-container {
    flex-direction: column; /* 全体を縦並びに */
  }
  .footer-left {
    margin: 0 auto 30px auto; /* マージンをリセットして中央寄せ */
    width: 100%;
    text-align: center;
  }
  .footer-right {
    margin: 0;
    flex-direction: column; /* コンタクトとリンク群も縦並びに */
    width: 100%;
  }
  .footer-right-left-contact-items {
    margin-left: 0; /* 左の余白を消す */
  }
  .footer-right-right {
    margin: 30px 0 0 0; /* マージンをリセット */
  }
  .footer-right-right-top-link-items,
  .footer-right-right-bottom-sns-items {
    margin-left: 0;
  }

  /* 5. はみ出しやすい長いURLの強制折り返し */
  .footer-right-left-contact-items-7 a,
  .footer-right-left-contact-items-7 span {
    word-break: break-all;
  }
}