@charset "UTF-8";
/* 共同研究プロジェクト一覧のスタイル */
.research-projects {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}
.sec_h2 {
  font-size: 28px;
  margin-bottom: 30px;
  text-align: center;
  position: relative;
}
.sec_h2:after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background-color: #004098;
  /* 東北大学のブルー */
  margin: 15px auto 0;
}
.bg_gray {
  position: relative;
}
.bg_gray:after {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -2;
  display: block;
  content: "";
  width: 100vw;
  height: 100%;
  margin: 0 calc(50% - 50vw);
  background-color: #F0F3F5;
}
/* フィルターボタン */
.projects-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}
.filter-btn {
  background-color: #f5f5f5;
  border: 1px solid #ddd;
  color: #333;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s ease;
}
.filter-btn:hover {
  background-color: #e0e0e0;
}
.filter-btn.active {
  background-color: #004098;
  color: white;
  border-color: #004098;
}
/* プロジェクトグリッド */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 25px;
}
/* プロジェクトカード */
.project-card {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}
.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}
.project-content {
  padding: 25px;
  flex-grow: 1;
}
.project-title {
  font-size: 18px;
  margin: 0 0 15px 0;
  line-height: 1.4;
  color: #004098;
}
/* プロジェクトタイトルのリンク色を元の青色に戻す */
.project-title a {
  color: #004098 !important;
  /* 東北大学のブルー */
  text-decoration: none;
  /* 下線を削除 */
}
/* ホバー時のスタイル */
.project-title a:hover {
  text-decoration: underline;
  /* ホバー時に下線を表示 */
  opacity: 0.8;
  /* ホバー時に少し透明に */
}
/* 訪問済みリンクも同じ色に */
.project-title a:visited {
  color: #004098 !important;
}
.project-meta {
  display: flex;
  gap: 15px;
  margin-bottom: 10px;
  font-size: 14px;
}
.project-year, .project-type {
  color: #666;
}
.project-leader {
  font-size: 14px;
  color: #333;
  margin-bottom: 15px;
}
.project-summary {
  color: #555;
  font-size: 14px;
  line-height: 1.6;
}
.project-link {
  padding: 15px 25px;
  border-top: 1px solid #eaeaea;
  text-align: right;
}
.detail-link {
  color: #004098;
  text-decoration: none;
  font-size: 14px;
  font-weight: bold;
  display: inline-block;
  position: relative;
  padding-right: 20px;
}
.detail-link:after {
  content: "→";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  transition: transform 0.3s ease;
}
.detail-link:hover:after {
  transform: translate(5px, -50%);
}
/* レスポンシブ対応 */
@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
  }
  .project-content {
    padding: 20px;
  }
  .project-title {
    font-size: 16px;
  }
}
@media (max-width: 480px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .filter-btn {
    font-size: 12px;
    padding: 6px 12px;
  }
}
/*# sourceMappingURL=./research.css.map */