/* =========================================================================
   Components — ボタン・写真・研究・お知らせ・業績・ギャラリー・本文・フォームなど
   ========================================================================= */

/* ---------- Buttons（フォームの送信など、操作に使う） ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1.3;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 150ms var(--ease), color 150ms var(--ease), border-color 150ms var(--ease);
}
.button:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); color: var(--color-on-primary); text-decoration: none; }
.button--primary { background: var(--color-primary); }

/* 白地に深緑の文字のボタン */
.button--ghost { background: var(--color-bg); color: var(--color-primary); }
.button--ghost:hover { background: var(--color-tint); border-color: var(--color-primary); color: var(--color-primary-hover); }

.button--small { min-height: 36px; padding: 0 14px; font-size: 0.85rem; }
.button--block { width: 100%; }

/* ---------- 文字の札 ---------- */

/* お知らせの分類（深緑の小さな文字） */
.category { color: var(--color-primary); font-size: var(--text-sm); letter-spacing: 0.04em; white-space: nowrap; }

/* 研究の状況（進行中は深緑、終わったものは灰色） */
.status { color: var(--color-subtle); font-size: var(--text-sm); letter-spacing: 0.04em; }
.status--ongoing { color: var(--color-primary); }

/* 英語ページで、日本語の文だけがあることを示す */
.japanese-only {
  display: inline-block;
  padding: 0 6px;
  border: var(--rule);
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-size: 0.75rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  vertical-align: 0.1em;
}

/* ---------- Photo（写真の枠。角を丸くする） ---------- */

.photo {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-photo);
  background: var(--color-tint);
}
.photo > img { width: 100%; height: 100%; object-fit: cover; }
/* 白っぽい写真でも枠がわかるように、ごく薄い線を重ねる */
.photo::after, .gallery-item__media::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgb(0 0 0 / 6%);
  border-radius: inherit;
  pointer-events: none;
}

/* ---------- 研究テーマ（写真が上・文字が下） ---------- */

.tile-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 44px 32px;
}
@media (max-width: 960px) {
  .tile-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .tile-grid { gap: 28px 16px; }
  .tile-grid--wide { grid-template-columns: 1fr; gap: 36px; }
}

.project-tile__link { display: block; color: inherit; text-decoration: none; }
.project-tile__link:hover { color: inherit; }
.project-tile__link:hover .project-tile__title { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.25em; }
.project-tile__link:hover .photo > img { opacity: 0.92; }
.project-tile__status { margin-top: 14px; }
.project-tile__title { margin-top: 2px; font-size: var(--text-lg); line-height: 1.6; letter-spacing: 0.04em; }
.project-tile__subtitle { margin-top: 6px; color: var(--color-muted); font-size: var(--text-md); line-height: 1.75; }
.project-tile__summary { margin-top: 10px; color: var(--color-ink-soft); font-size: 0.9375rem; line-height: 1.9; }
.project-tile__keywords { margin-top: 8px; color: var(--color-subtle); font-size: var(--text-sm); line-height: 1.8; }
@media (max-width: 560px) {
  .tile-grid:not(.tile-grid--wide) .project-tile__title { font-size: 1rem; }
  .tile-grid:not(.tile-grid--wide) .project-tile__subtitle { display: none; }
}

/* 横に並べる小さな形（お知らせの記事の「関連する研究」など） */
.project-row__link { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 20px; align-items: center; color: inherit; text-decoration: none; }
.project-row__link:hover { color: inherit; }
.project-row__link:hover .project-tile__title { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; }
.project-row .photo { border-radius: 10px; }
.project-row .project-tile__status { margin-top: 0; }
@media (max-width: 560px) {
  .project-row__link { grid-template-columns: 112px minmax(0, 1fr); gap: 14px; }
  .project-row .project-tile__title { font-size: 1rem; }
}

/* ---------- お知らせの一覧（日付・分類・タイトル） ---------- */

.news-list { border-top: var(--hairline); }
.news-row {
  display: grid;
  grid-template-columns: 9.5em 6.5em minmax(0, 1fr) auto;
  gap: 4px 16px;
  align-items: start;
  padding-block: 15px;
  border-bottom: var(--hairline);
}
.news-row:lang(en), :lang(en) .news-row { grid-template-columns: 8em 6.5em minmax(0, 1fr) auto; }
.news-row__date { color: var(--color-subtle); font-size: var(--text-md); font-variant-numeric: tabular-nums; white-space: nowrap; }
.news-row__category { padding-top: 1px; }
.news-row__title { color: var(--color-ink); text-decoration: none; }
.news-row__title:hover { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; }
.news-row__excerpt {
  margin-top: 4px;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: 1.85;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-row__thumb { width: 150px; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 10px; background: var(--color-tint); }
.news-row .japanese-only { margin-left: 8px; }
@media (max-width: 760px) {
  .news-row { grid-template-columns: auto minmax(0, 1fr) auto; gap: 2px 14px; }
  .news-row:lang(en), :lang(en) .news-row { grid-template-columns: auto minmax(0, 1fr) auto; }
  .news-row__main { grid-column: 1 / 3; }
  .news-row__thumb { grid-column: 3; grid-row: 1 / span 2; width: 96px; align-self: center; }
}

/* ---------- これからのイベント ---------- */

.event-box { padding: 22px 28px; border-radius: var(--radius-photo); background: var(--color-tint); }
.event-box__title { font-size: 1rem; letter-spacing: 0.06em; }
.event-row { display: grid; grid-template-columns: 13em minmax(0, 1fr); gap: 2px 16px; padding-block: 12px; }
.event-row + .event-row { border-top: 1px solid var(--color-tint-strong); }
.event-row:first-child { padding-top: 10px; }
.event-row:last-child { padding-bottom: 0; }
.event-row__when { color: var(--color-primary); font-size: 0.9375rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.event-row__title { color: var(--color-ink); text-decoration: none; }
.event-row__title:hover { color: var(--color-primary); text-decoration: underline; }
.event-row__place { grid-column: 2; color: var(--color-muted); font-size: var(--text-md); }
@media (max-width: 640px) {
  .event-box { padding: 18px 20px; }
  .event-row { grid-template-columns: 1fr; }
  .event-row__place { grid-column: 1; }
}

/* ---------- 業績 ---------- */

.pub-list { border-top: var(--hairline); }
.pub { padding-block: 16px; border-bottom: var(--hairline); }
.pub__title { color: var(--color-heading); font-weight: 600; line-height: 1.75; letter-spacing: 0.02em; }
.pub__title a { color: inherit; text-decoration: none; }
.pub__title a:hover { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; }
.pub__authors { margin-top: 2px; color: var(--color-ink-soft); font-size: 0.9375rem; line-height: 1.8; }
.pub__authors strong { color: var(--color-heading); font-weight: 600; }
.pub__venue { color: var(--color-muted); font-size: var(--text-md); line-height: 1.8; }
.pub__meta { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-top: 4px; color: var(--color-subtle); font-size: var(--text-sm); }
.pub__meta a { color: var(--color-primary); }

/* 年を左に添える形（トップ・研究テーマの詳細） */
.pub-list--dated .pub { display: grid; grid-template-columns: 4em minmax(0, 1fr); gap: 16px; padding-block: 14px; }
.pub__year { padding-top: 2px; color: var(--color-subtle); font-size: var(--text-md); font-variant-numeric: tabular-nums; }

/* ---------- 受賞 ---------- */

.award-list { display: grid; }
.award { display: flex; flex-wrap: wrap; gap: 2px 16px; align-items: baseline; padding-block: 12px; }
.award__label { flex: none; color: var(--color-primary); font-size: var(--text-sm); }
.award__name { color: var(--color-heading); font-weight: 600; }
.award__meta { color: var(--color-muted); font-size: var(--text-md); }

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

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr));
  gap: 28px 24px;
}
.gallery-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: calc((100% - 3 * 24px) / 4);
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 12px;
  scrollbar-width: thin;
  scrollbar-color: #c8c8c8 transparent;
}
.gallery-strip > li { scroll-snap-align: start; }
@media (max-width: 960px) {
  .gallery-strip { grid-auto-columns: minmax(220px, 42%); }
}
@media (max-width: 640px) {
  .gallery-strip { grid-auto-columns: 78%; }
}

.gallery-item {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  color: inherit;
  cursor: zoom-in;
}
.gallery-item__media { position: relative; display: block; overflow: hidden; aspect-ratio: 3 / 2; border-radius: 10px; background: var(--color-tint); }
.gallery-item__media img { width: 100%; height: 100%; object-fit: cover; }
.gallery-item:hover .gallery-item__media img { opacity: 0.92; }
.gallery-item__caption { display: block; margin-top: 8px; color: var(--color-muted); font-size: var(--text-sm); line-height: 1.7; }

/* ---------- Lightbox ---------- */

.lightbox {
  width: min(1200px, 100vw - 32px);
  max-height: calc(100vh - 32px);
  padding: 0;
  border: 0;
  border-radius: var(--radius-photo);
  background: #1f2421;
  color: #f2f2f0;
  overflow: hidden;
}
.lightbox::backdrop { background: rgb(20 24 22 / 86%); }
.lightbox__figure { display: grid; grid-template-rows: 1fr auto; max-height: calc(100vh - 32px); }
.lightbox__image { width: 100%; max-height: calc(100vh - 140px); object-fit: contain; background: #1f2421; }
.lightbox__caption { padding: 14px 64px 18px 20px; font-size: 0.92rem; color: #e6e8e6; }
.lightbox__close, .lightbox__nav {
  position: absolute;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: #f2f2f0;
  color: #1f2421;
}
.lightbox__close:hover, .lightbox__nav:hover { background: #ffffff; color: #1f2421; }
.lightbox__close { top: 8px; right: 8px; }
.lightbox__nav--prev { left: 8px; top: 50%; transform: translateY(-50%); }
.lightbox__nav--next { right: 8px; top: 50%; transform: translateY(-50%); }

/* ---------- Prose（管理画面で書いた本文） ---------- */

.prose { font-size: 1.0625rem; line-height: 2.05; }
.prose > * + *,
.prose .trix-content > * + * { margin-top: 1.25em; }
.prose h1, .prose h2 { margin-top: 2.2em; font-size: var(--text-xl); line-height: 1.6; }
.prose h3 { margin-top: 1.8em; font-size: var(--text-lg); }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li + li { margin-top: 0.4em; }
.prose li::marker { color: var(--color-primary); }
.prose blockquote { padding: 4px 0 4px 20px; border-left: 3px solid var(--color-tint-strong); color: var(--color-ink-soft); }
.prose pre {
  padding: 16px;
  border-radius: var(--radius);
  background: var(--color-surface);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
}
.prose strong { font-weight: 700; color: var(--color-heading); }
.prose figure, .prose .attachment { margin-block: 1.8em; }
.prose img { margin-inline: auto; max-width: 100%; height: auto; border-radius: 10px; }
.prose figcaption, .prose .attachment__caption { margin-top: 10px; color: var(--color-muted); font-size: var(--text-md); text-align: left; }
.prose .attachment-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
/* 本文エディタ（Trix）で貼った画像・ファイルの表示（公開ページでは actiontext.css を読み込まない） */
.prose .attachment { display: inline-block; position: relative; max-width: 100%; }
.prose .attachment a { color: inherit; text-decoration: none; }
.prose .attachment--preview { display: block; width: 100%; }
.prose .attachment--file {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  line-height: 1.4;
}
.prose .attachment__name { font-weight: 700; }
.prose .attachment__name + .attachment__size::before { content: " · "; }
.prose .attachment__size { color: var(--color-muted); font-size: 0.85em; }
.prose .attachment-gallery > action-text-attachment, .prose .attachment-gallery > .attachment { margin: 0; }

/* ---------- Forms ---------- */

.form { display: grid; gap: 26px; }
.form-field { display: grid; gap: 8px; }
.form-label { color: var(--color-heading); font-weight: 700; font-size: 0.9375rem; }
.form-label .required { margin-left: 10px; color: var(--color-danger); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em; }
.form-hint { color: var(--color-muted); font-size: 0.85rem; line-height: 1.7; }

.input, .textarea, .select {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  background: var(--color-card);
  color: var(--color-ink);
  line-height: 1.6;
}
.textarea { min-height: 200px; resize: vertical; }
.input:focus, .textarea:focus, .select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: -1px;
  border-color: var(--color-primary);
}
.input[aria-invalid="true"], .textarea[aria-invalid="true"] { border-color: var(--color-danger); box-shadow: inset 0 0 0 1px var(--color-danger); }
.field-error { color: var(--color-danger); font-size: 0.85rem; font-weight: 700; }

.choice-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); gap: 8px; }
.choice {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: var(--rule);
  border-radius: var(--radius);
  background: var(--color-card);
  cursor: pointer;
}
.choice:hover { border-color: var(--color-primary); }
.choice input { flex: none; accent-color: var(--color-primary); width: 18px; height: 18px; margin: 0; }
.choice:has(input:checked) { border-color: var(--color-primary); background: var(--color-tint); }

.checkbox { display: flex; align-items: flex-start; gap: 10px; line-height: 1.7; }
.checkbox input { width: 20px; height: 20px; margin-top: 3px; accent-color: var(--color-primary); flex: none; }

/* 迷惑投稿対策の罠項目（人には見せない） */
.hp-field { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }

.error-summary {
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--color-danger-soft);
  color: var(--color-danger);
}
.error-summary h2 { color: inherit; font-size: 1rem; }
.error-summary ul { margin-top: 8px; padding-left: 1.2em; }

.fieldset-reset { border: 0; padding: 0; margin: 0; min-width: 0; }
.fieldset-reset legend { padding: 0; margin-bottom: 8px; }

/* ---------- Flash ---------- */

.flash {
  margin-block: 16px 0;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-weight: 700;
}
.flash--notice { background: var(--color-success-soft); color: var(--color-success); }
.flash--alert { background: var(--color-danger-soft); color: var(--color-danger); }
.flash--warning { background: var(--color-warning-soft); color: var(--color-warning); }
.flash a { color: inherit; }

/* ---------- 絞り込み（文字のタブ）・ページ送り ---------- */

.filter-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 0 24px; border-bottom: var(--hairline); }
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
  text-decoration: none;
  white-space: nowrap;
}
.filter-chip:hover { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; }
.filter-chip[aria-current="page"], .filter-chip[aria-current="true"] { color: var(--color-primary); font-weight: 700; box-shadow: inset 0 -2px 0 var(--color-primary); text-decoration: none; }

.pagination { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 4px; margin-top: 48px; }
.pagination a, .pagination span {
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  height: 44px;
  padding: 0 10px;
  border-radius: var(--radius);
  color: var(--color-ink);
  text-decoration: none;
  font-variant-numeric: tabular-nums;
}
.pagination a:hover { background: var(--color-tint); color: var(--color-primary); }
.pagination [aria-current="page"] { background: var(--color-tint); color: var(--color-primary); font-weight: 700; }
.pagination span[aria-hidden] { color: var(--color-subtle); }

/* ---------- 経歴 ---------- */

.timeline { border-top: var(--hairline); }
.timeline__item {
  display: grid;
  grid-template-columns: 12em minmax(0, 1fr);
  gap: 2px 20px;
  padding-block: 14px;
  border-bottom: var(--hairline);
}
.timeline__period { color: var(--color-subtle); font-size: var(--text-md); font-variant-numeric: tabular-nums; }
.timeline__item--current .timeline__period { color: var(--color-primary); }
.timeline__title { color: var(--color-heading); font-weight: 600; line-height: 1.75; }
.timeline__title a { color: inherit; }
.timeline__sub { color: var(--color-ink-soft); font-size: 0.9375rem; }
.timeline__note { margin-top: 2px; color: var(--color-muted); font-size: var(--text-md); }
@media (max-width: 640px) {
  .timeline__item { grid-template-columns: 1fr; }
}

/* ---------- Share ---------- */

.share { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 20px; font-size: 0.9375rem; }
.share__label { color: var(--color-muted); font-size: var(--text-md); }
.share__copy { padding: 0; border: 0; background: none; color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.28em; }
.share__copy:hover { text-decoration-thickness: 2px; }

/* ---------- Video ---------- */

.video-embed { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: var(--radius-photo); background: #1f2421; }
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---------- 項目と内容の一覧（研究の情報・イベントの情報） ---------- */

.info-list { border-top: var(--hairline); }
.info-list__row { display: grid; grid-template-columns: 6.5em minmax(0, 1fr); gap: 12px; padding-block: 12px; border-bottom: var(--hairline); }
.info-list__row dt { color: var(--color-muted); font-size: var(--text-md); padding-top: 1px; }

/* 淡い緑の面（自己紹介・イベントの情報など、ページに 1〜2 か所だけ） */
.tint-panel { padding: 28px 32px; border-radius: var(--radius-photo); background: var(--color-tint); }
.tint-panel .info-list { border-top: 0; }
.tint-panel .info-list__row { border-bottom-color: var(--color-tint-strong); }
.tint-panel .info-list__row:last-child { border-bottom: 0; padding-bottom: 0; }
.tint-panel .info-list__row:first-child { padding-top: 0; }
@media (max-width: 640px) {
  .tint-panel { padding: 20px; }
}

/* ---------- Empty state ---------- */

.empty { padding: 32px 24px; border-radius: var(--radius-photo); background: var(--color-surface); color: var(--color-muted); text-align: center; }

/* ---------- Preview banner（管理画面のプレビュー表示） ---------- */

.preview-banner {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 20px;
  padding: 10px 16px;
  background: var(--color-warning-soft);
  color: var(--color-warning);
  font-weight: 700;
  font-size: 0.9rem;
}
.preview-banner a { color: var(--color-warning); }

/* 絞り込みのすぐ後の一覧・空の表示 */
.filter-bar + .news-list { border-top: 0; }
.filter-bar + .empty { margin-top: 32px; }

/* 一覧の各行のタイトルを見出しにするとき（お知らせ一覧）。見た目は普通の文字のまま */
.news-row__heading { display: inline; font-size: inherit; font-weight: inherit; line-height: inherit; letter-spacing: inherit; color: inherit; }