/* ナレッジベースの一覧ページ専用のCSS（v8）
   page-knowledge.php だけで読み込まれます。style.css のあとに読み込まれます。 */

.kb { padding: 4.5rem 2rem 6rem; background: var(--white); }
.kb-inner { max-width: 1100px; margin: 0 auto; }
.kb *, .kb *::before, .kb *::after { box-sizing: border-box; }
.kb a:focus-visible, .kb button:focus-visible, .kb input:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
.kb-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.kb-lead { max-width: 40em; margin-bottom: 2rem; font-size: 1rem; line-height: 1.9; color: var(--text); }

/* ─── 検索・絞り込み ─── */
.kb-filter { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) auto; align-items: end; gap: 1rem; padding: 1.3rem 1.4rem 1.4rem; background: var(--green-snow); border-radius: 8px; scroll-margin-top: 80px; }
.kb-field { display: flex; flex-direction: column; gap: .4rem; min-width: 0; }
.kb-field label { font-size: .8rem; font-weight: 700; color: var(--text); }
.kb-field input, .kb-field select { width: 100%; height: 48px; padding: 0 1rem; border: 1px solid var(--border); border-radius: 6px; background: var(--white); font-family: inherit; font-size: 16px; color: var(--text); -webkit-appearance: none; appearance: none; }
.kb-field input::placeholder { color: #9AAE98; }
.kb-field input:focus, .kb-field select:focus { border-color: var(--green); outline: none; }
.kb-select { position: relative; display: block; }
.kb-select select { padding-right: 2.4rem; cursor: pointer; }
.kb-select::after { content: ''; position: absolute; right: 1rem; top: 50%; width: 8px; height: 8px; margin-top: -6px; border-right: 2px solid var(--mid); border-bottom: 2px solid var(--mid); transform: rotate(45deg); pointer-events: none; }
.kb-field button { height: 48px; padding: 0 1.8rem; border: 0; border-radius: 6px; background: #2E4A35; font-family: inherit; font-size: .95rem; font-weight: 700; color: #fff; cursor: pointer; white-space: nowrap; }
.kb-field button:hover { background: #24402B; }

/* 件数 */
.kb-status { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1rem; margin: 1.8rem 0 1.6rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.kb-status p { font-size: .92rem; color: var(--mid); }
.kb-status b { margin-right: .2rem; font-family: 'Inter', sans-serif; font-size: 1.25rem; font-weight: 600; color: var(--text); }
.kb-clear { font-size: .88rem; font-weight: 500; color: #2F7D62; }

/* ─── 一覧：横3列 ─── */
.kb-grid { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.6rem 1.6rem; margin: 0; padding: 0; }
.kb-grid li { display: flex; min-width: 0; }
.kb-card { display: flex; flex-direction: column; width: 100%; color: inherit; text-decoration: none; }
.kb-thumb { position: relative; display: block; aspect-ratio: 16 / 10; overflow: hidden; border-radius: 6px; background: var(--green-mist); }
.kb-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.kb-thumb-none { display: flex; align-items: center; justify-content: center; height: 100%; background: linear-gradient(135deg, #F4FAF3, #D6ECDA); font-family: 'Noto Sans JP', sans-serif; font-size: 1.05rem; font-weight: 700; letter-spacing: .12em; color: var(--green); }
.kb-thumb-none .logo-mark { margin-right: .7rem; }
.kb-body { display: flex; flex-direction: column; min-width: 0; }
.kb-meta { display: flex; align-items: center; gap: .8rem; margin-top: 1rem; font-size: .8rem; color: var(--mid); }
.kb-label { padding: .15rem .65rem; border-radius: 3px; background: var(--green-snow); border: 1px solid var(--border); font-size: .74rem; font-weight: 700; color: #2F7D62; }
.kb-title { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-top: .6rem; font-size: 1.06rem; font-weight: 700; line-height: 1.65; color: var(--text); }
.kb-excerpt { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-top: .45rem; font-size: .88rem; line-height: 1.8; color: var(--mid); }

@media (hover: hover) and (pointer: fine) {
  .kb-card:hover .kb-thumb img { transform: scale(1.04); }
  .kb-card:hover .kb-title { text-decoration: underline; text-underline-offset: .2em; }
}

.kb-pager { margin-top: 3.5rem; }
.kb-empty { padding: 3rem 0; text-align: center; }
.kb-empty p { font-size: .98rem; line-height: 1.9; color: var(--mid); }
.kb-empty p:first-child { font-weight: 700; color: var(--text); }
.kb-empty .kb-clear { display: inline-block; margin-top: 1rem; }

/* ─── タブレット：横2列 ─── */
@media (max-width: 960px) {
  .kb-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.2rem 1.2rem; }
  .kb-filter { grid-template-columns: minmax(0, 1fr) auto; }
  .kb-field--kw { grid-column: 1 / -1; }
}

/* ─── スマホ ─── */
@media (max-width: 640px) {
  .kb { padding: 2.4rem 0 4rem; }
  .kb-lead { margin: 0 1.25rem 1.4rem; font-size: .95rem; }

  /* キーワードは1段目、カテゴリと検索ボタンは2段目に横並び */
  .kb-filter { grid-template-columns: minmax(0, 1fr) auto; gap: .8rem; margin: 0 1.25rem; padding: 1rem; }
  .kb-field--kw { grid-column: 1 / -1; }
  .kb-field button { padding: 0 1.3rem; }
  .kb-field select { padding: 0 2rem 0 .8rem; }
  .kb-select::after { right: .8rem; }

  .kb-status { margin: 1.2rem 1.25rem .4rem; padding-bottom: .8rem; }
  .kb-status p { font-size: .88rem; }

  /* カード：写真を左、文字を右。タイトルを大きめに */
  .kb-grid { grid-template-columns: 1fr; gap: 0; padding: 0 1.25rem; }
  .kb-grid li { border-bottom: 1px solid var(--border); }
  .kb-card { flex-direction: row; align-items: flex-start; gap: 1rem; padding: 1.2rem 0; }
  .kb-thumb { flex: 0 0 104px; width: 104px; aspect-ratio: 1 / 1; border-radius: 6px; }
  .kb-thumb-none { font-size: .66rem; letter-spacing: .06em; }
  .kb-thumb-none .logo-mark { display: none; }
  .kb-body { flex: 1; }
  .kb-meta { margin-top: 0; gap: .6rem; font-size: .75rem; }
  .kb-label { font-size: .7rem; }
  .kb-title { -webkit-line-clamp: 3; margin-top: .45rem; font-size: 1rem; line-height: 1.6; }
  .kb-excerpt { -webkit-line-clamp: 2; margin-top: .35rem; font-size: .82rem; line-height: 1.7; }
  .kb-pager { margin-top: 2.2rem; padding: 0 1.25rem; }
  .kb-empty { padding: 2.4rem 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  .kb-thumb img { transition: none; }
}