/* ============================================================
   赤石研究室 — サイト共通スタイル（デザインA ベース）
   ============================================================ */

/* ===== フォント ===== */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,300;0,400;0,500;0,700;1,300&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* ===== CSS変数 ===== */
:root {
  --ink:        #1a1a1a;
  --ink2:       #4a4a4a;
  --ink3:       #8a8a8a;
  --line:       #e2e2e2;
  --surface:    #f8f8f6;
  --white:      #ffffff;
  --accent:     #1e5e35;
  --accent2:    #2d8a52;
  --accent-pale:#f0f7f2;
  --warm:       #c8a96e;
  --warm2:      #f5f0e8;
}

/* ===== ベース ===== */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Noto Sans JP', 'DM Sans', sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.8;
}

/* ===== ナビバー ===== */
.navbar {
  background: rgba(255,255,255,0.94) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line) !important;
  padding: 0 2rem !important;
  min-height: 60px;
}

.navbar-brand {
  font-family: 'DM Sans', sans-serif !important;
  font-size: 1rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.12em !important;
  text-transform: uppercase;
  color: var(--ink) !important;
}

.navbar-brand .lab-accent {
  color: var(--accent2) !important;
}

.navbar-nav .nav-link {
  color: var(--ink2) !important;
  font-size: 0.8rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem !important;
  transition: color 0.2s;
}
.navbar-nav .nav-link:hover { color: var(--accent) !important; }

/* ===== ページ見出し（Quarto標準） ===== */
#quarto-content h1.title {
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

/* ===== セクション見出し ===== */
h1, h2, h3, h4 {
  font-family: 'DM Sans', 'Noto Sans JP', sans-serif;
  color: var(--ink);
}

h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--accent);
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--accent);
  margin-top: 3rem;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  margin-top: 2rem;
  margin-bottom: 0.8rem;
  padding-left: 0.8rem;
  border-left: 3px solid var(--accent2);
}

/* ===== ヒーロー（index.qmd） ===== */
.hero {
  background-image:
    linear-gradient(rgba(0,0,0,0.42), rgba(0,0,0,0.42)),
    url('hero2.jpg');
  background-size: cover;
  background-position: center;
  padding: 8rem 0 7rem;
  text-align: center;
}

.hero h1 {
  font-family: 'DM Sans', sans-serif !important;
  font-size: clamp(2rem, 4vw, 3.2rem) !important;
  font-weight: 700 !important;
  letter-spacing: -0.02em !important;
  color: #ffffff !important;
  margin-bottom: 0.8rem !important;
  text-shadow: none !important;
}

.hero .subtitle {
  font-size: 0.9rem;
  font-weight: 400;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero p {
  color: rgba(255,255,255,0.88) !important;
  font-size: 1rem !important;
}

.hero-description {
  max-width: 620px;
  margin: 0 auto 2.5rem;
  font-size: 0.95rem !important;
  color: rgba(255,255,255,0.85) !important;
  line-height: 2;
}

.hero-buttons .btn {
  margin: 0.3rem;
  padding: 0.7rem 2rem;
  border-radius: 2px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: all 0.2s;
}

.btn-primary {
  background-color: var(--accent) !important;
  border-color: var(--accent) !important;
}
.btn-primary:hover {
  background-color: var(--accent2) !important;
  border-color: var(--accent2) !important;
  transform: translateY(-1px);
}

.btn-outline-secondary {
  background-color: transparent !important;
  border-color: rgba(255,255,255,0.6) !important;
  color: #fff !important;
}
.btn-outline-secondary:hover {
  background-color: rgba(255,255,255,0.15) !important;
}

/* ===== セクション共通 ===== */
.section       { padding: 4rem 0; }
.section-alt   { background-color: var(--surface); padding: 4rem 0; }

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

/* ===== section-label（小見出しアクセント） ===== */
.section-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.section-label::before {
  content: '';
  display: inline-block;
  width: 24px; height: 1px;
  background: var(--accent2);
  flex-shrink: 0;
}

/* ===== カード ===== */
.card {
  border: 1px solid var(--line) !important;
  border-radius: 2px !important;
  background: var(--white);
  transition: box-shadow 0.2s, transform 0.2s;
  position: relative;
  overflow: hidden;
}
.card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent2);
  transition: width 0.3s ease;
}
.card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08) !important;
  transform: translateY(-2px);
}
.card:hover::after { width: 100%; }

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
}

/* ===== ニュース ===== */
.news-item {
  display: flex;
  gap: 1.2rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
}
.news-item:first-of-type { border-top: 1px solid var(--line); }

.news-date {
  min-width: 90px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  color: var(--ink3);
  font-weight: 400;
  padding-top: 0.15rem;
  letter-spacing: 0.02em;
}

.news-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.18rem 0.6rem;
  border-radius: 1px;
  margin-right: 0.4rem;
  white-space: nowrap;
}

.badge-paper   { background: var(--accent-pale); color: var(--accent); }
.badge-award   { background: #fdf6e8; color: #7a4f00; }
.badge-event   { background: #e8edf8; color: #1a3a7c; }
.badge-recruit { background: #fde8e8; color: #8a1a1a; }
.badge-media   { background: #f4eafd; color: #5a1a8a; }

/* ===== メンバーカード ===== */
.member-card {
  text-align: center;
  padding: 1.5rem 1rem;
  border: 1px solid var(--line) !important;
  border-radius: 2px !important;
}

.member-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent-pale);
  border: 1px solid rgba(45,138,82,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.5rem;
  color: var(--accent);
}

.member-name {
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.2rem;
  font-size: 0.95rem;
}

.member-role {
  font-size: 0.82rem;
  color: var(--ink3);
  letter-spacing: 0.03em;
}

.member-theme {
  font-size: 0.82rem;
  color: var(--ink2);
  margin-top: 0.6rem;
  line-height: 1.7;
}

/* ===== 論文リスト ===== */
.pub-item {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
}
.pub-item:last-child { border-bottom: none; }

.pub-journal {
  font-size: 0.83rem;
  color: var(--accent2);
  font-weight: 500;
}

.pub-year {
  display: inline-block;
  background: var(--accent-pale);
  color: var(--accent);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: 1px;
  margin-right: 0.5rem;
}

/* ===== kable テーブル（論文等） ===== */
table {
  font-size: 0.9rem;
  color: var(--ink2);
  border-collapse: collapse;
  width: 100%;
}
thead th {
  background: var(--ink);
  color: #fff;
  padding: 0.65rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border: none;
}
tbody td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
tbody tr:nth-child(even) td { background: var(--surface); }
tbody tr:hover td { background: var(--accent-pale); }

/* ===== OB テーブル ===== */
.ob-table td {
  font-size: 0.88rem;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px solid var(--line);
}
.ob-table th {
  font-size: 0.82rem;
  padding: 0.55rem 0.8rem;
  background: var(--ink);
  color: #fff;
  text-align: left;
}

/* ===== 研究テーマナビ ===== */
.theme-nav {
  display: flex;
  gap: 1.2rem;
  justify-content: center;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}
.theme-nav a { text-decoration: none; }
.theme-nav-item {
  text-align: center;
  padding: 0.9rem 1.4rem;
  border: 1px solid var(--accent);
  border-radius: 2px;
  color: var(--accent);
  font-weight: 700;
  min-width: 150px;
  font-size: 0.88rem;
  transition: all 0.2s;
}
.theme-nav-item:hover {
  background: var(--accent);
  color: #fff;
}
.theme-nav-item span { font-size: 0.82rem; font-weight: 400; }

/* ===== researchmapリンクグリッド（publications） ===== */
.rm-link-grid a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 1rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  text-decoration: none;
  color: var(--ink2);
  font-size: 0.88rem;
  transition: all 0.2s;
}
.rm-link-grid a:hover {
  border-color: var(--accent2);
  background: var(--accent-pale);
  color: var(--accent);
}

/* ===== ギャラリー ===== */
.quarto-layout-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.quarto-layout-cell {
  flex: 1 1 calc(33% - 6px);
  min-width: 150px;
}
.quarto-layout-cell img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 2px;
  transition: opacity 0.2s;
}
.quarto-layout-cell img:hover { opacity: 0.88; }

/* ===== ギャラリー年ナビ ===== */
.gallery-year-nav a div {
  border: 1px solid var(--accent) !important;
  border-radius: 2px !important;
  color: var(--accent) !important;
  font-weight: 700;
  padding: 0.5rem 1.2rem;
  transition: all 0.2s;
}
.gallery-year-nav a div:hover {
  background: var(--accent) !important;
  color: #fff !important;
}

/* ===== プロフィール画像フレーム ===== */
.profile-img-frame {
  position: relative;
  display: inline-block;
}
.profile-img-frame::before {
  content: '';
  position: absolute;
  top: -12px; left: -12px;
  width: 100%; height: 100%;
  border: 1px solid var(--accent2);
  z-index: 0;
  pointer-events: none;
}
.profile-img-frame img {
  position: relative;
  z-index: 1;
}

/* ===== プロフィールリンクボタン ===== */
.profile-link {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink2);
  text-decoration: none;
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 1px;
  transition: all 0.2s;
  letter-spacing: 0.03em;
  margin: 0.2rem;
}
.profile-link:hover {
  border-color: var(--accent2);
  color: var(--accent);
  background: var(--accent-pale);
}

/* ===== リクルートセクション ===== */
.recruit-dark {
  background: var(--ink);
  color: #fff;
  padding: 4rem 0;
}
.recruit-dark h2 {
  color: #fff;
  border-bottom-color: rgba(255,255,255,0.2);
}
.recruit-dark p { color: rgba(255,255,255,0.72); }
.recruit-dark a.btn-warm {
  background: var(--warm);
  color: var(--ink);
  padding: 0.75rem 2rem;
  font-weight: 700;
  border-radius: 2px;
  text-decoration: none;
  display: inline-block;
  transition: opacity 0.2s;
}
.recruit-dark a.btn-warm:hover { opacity: 0.85; }
.recruit-fact {
  border-left: 2px solid rgba(255,255,255,0.18);
  padding-left: 1.2rem;
  margin-bottom: 1.2rem;
}
.recruit-fact-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 0.2rem;
}
.recruit-fact-val {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.82);
}

/* ===== フッター ===== */
.nav-footer {
  background: var(--ink) !important;
  color: rgba(255,255,255,0.55) !important;
  font-size: 0.9rem;
  padding: 2rem 0;
}
.nav-footer a {
  color: rgba(255,255,255,0.55) !important;
  text-decoration: none;
  transition: color 0.2s;
}
.nav-footer a:hover { color: #fff !important; }

/* ===== リンク全般 ===== */
a { color: var(--accent2); transition: color 0.2s; }
a:hover { color: var(--accent); }

/* ===== ページコンテンツ余白 ===== */
#quarto-content .page-columns .page-full { padding-top: 2.5rem; }

/* ===== キーワード・共同研究機関グリッド ===== */
.keyword-partner-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

@media (max-width: 640px) {
  .keyword-partner-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .dept-break::before {
    content: '\A';
    white-space: pre;
  }
}

@media (max-width: 640px) {
  .research-cards {
    grid-template-columns: 1fr !important;
  }
}

.research-card-link {
  text-decoration: none !important;
  color: inherit;
  display: block;
}

.research-card-link:hover .card {
  background: var(--accent-pale, #f0f7f2);
  transition: background 0.2s;
}