/* ============================================================
   board.css — 자료마당(게시판) 전용
   공통 토큰/리셋 = base.css, 헤더/드로어/푸터 = layout.css
   ============================================================ */

/* 페이지 타이틀 */
.board-head{padding:40px 0 4px}
.board-head h1{font-size:clamp(1.6rem,4vw,2.1rem);font-weight:800;letter-spacing:-.03em;line-height:1.3}
.board-head p{color:var(--muted);margin-top:8px;font-size:.98rem}

/* 게시판 카드 */
.board{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-sm);overflow:hidden;margin:20px 0 40px;
}

/* 탭 */
.board-tabs{display:flex;border-bottom:1px solid var(--line)}
.board-tabs button{
  flex:1;padding:20px 10px;font-size:1rem;font-weight:700;color:var(--muted);
  background:none;border:0;cursor:pointer;position:relative;transition:color .2s;font-family:inherit;
}
.board-tabs button:hover{color:var(--ink)}
.board-tabs button.on{color:var(--blue)}
.board-tabs button.on::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--blue)}

/* 제품 소분류 칩 (자주하는질문 탭에서만 노출) */
.board-filters{display:flex;flex-wrap:wrap;gap:8px;padding:16px 22px 4px}
.board-filters[hidden]{display:none}
.board-filters button{
  border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;font-family:inherit;
  font-weight:700;font-size:.88rem;padding:8px 15px;border-radius:999px;transition:.18s;white-space:nowrap;
}
.board-filters button:hover{border-color:#c9d8fb;color:var(--ink)}
.board-filters button.on{background:var(--blue);border-color:var(--blue);color:#fff}

/* 툴바 (검색 + 등록) */
.board-toolbar{display:flex;align-items:center;gap:10px;padding:18px 22px;flex-wrap:wrap}
.board-search{
  flex:1;min-width:200px;max-width:440px;display:flex;align-items:center;gap:8px;
  background:var(--mist);border:1px solid var(--line);border-radius:12px;padding:0 14px;transition:border-color .2s,box-shadow .2s;
}
.board-search:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(43,92,245,.12);background:#fff}
.board-search svg{width:18px;height:18px;color:var(--muted);flex:none}
.board-search input{flex:1;border:0;background:none;padding:12px 0;font-size:.95rem;font-family:inherit;color:var(--ink);outline:none;min-width:0}
.board-search input::placeholder{color:var(--muted)}
.board-btn{
  flex:none;display:inline-flex;align-items:center;gap:6px;border:0;cursor:pointer;font-family:inherit;
  font-weight:700;font-size:.92rem;padding:12px 20px;border-radius:12px;transition:.2s;
}
.board-btn.search{background:var(--blue);color:#fff}
.board-btn.search:hover{background:var(--blue-deep)}

/* 아코디언 목록 (질문 클릭 → 답변 펼침) */
.acc-list{list-style:none;margin:0;padding:0}
.acc-item{border-top:1px solid var(--line)}
.acc-item:first-child{border-top:0}
.acc-q{
  width:100%;display:flex;align-items:center;gap:12px;
  padding:19px 22px;background:none;border:0;cursor:pointer;
  font-family:inherit;text-align:left;transition:background .15s;
}
.acc-q:hover{background:var(--mist)}
.acc-q-t{flex:1;min-width:0;font-weight:600;color:var(--ink);font-size:1rem;letter-spacing:-.01em;line-height:1.5}
.acc-item.open .acc-q-t{color:var(--blue)}
.acc-ico{width:20px;height:20px;color:var(--muted);flex:none;transition:transform .3s ease,color .2s}
.acc-item.open .acc-ico{transform:rotate(180deg);color:var(--blue)}
/* 펼침 애니메이션: grid-template-rows 0fr→1fr */
.acc-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s ease}
.acc-item.open .acc-a{grid-template-rows:1fr}
.acc-a-inner{overflow:hidden;min-height:0}
.acc-a .bv-body{padding:2px 22px 22px;font-size:.96rem}
.acc-a .bv-body > :last-child{margin-bottom:0}

/* 분류 배지 */
.bcat{display:inline-block;font-size:.82rem;font-weight:700;padding:5px 13px;border-radius:999px;white-space:nowrap}
.bcat.faq{background:var(--blue-100);color:var(--blue)}
.bcat.join{background:var(--teal-100);color:var(--teal)}

/* 빈 상태 */
.board-empty{padding:56px 22px;text-align:center;color:var(--muted);font-size:.95rem;list-style:none}

/* ── 상세 페이지 ── */
.board-view{margin:26px 0 64px}
.board-back{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink-soft);font-weight:700;font-size:.9rem;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 16px 9px 13px;margin-bottom:16px;
  box-shadow:var(--shadow-sm);transition:color .2s,border-color .2s,box-shadow .2s,transform .2s;
}
.board-back svg{width:16px;height:16px;transition:transform .2s}
.board-back:hover{color:var(--blue);border-color:#c9d8fb;box-shadow:var(--shadow-md);transform:translateY(-1px)}
.board-back:hover svg{transform:translateX(-3px)}
.board-back:active{transform:translateY(0)}
.bv-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-sm);overflow:hidden}
.bv-head{padding:28px 30px;border-bottom:1px solid var(--line)}
.bv-head h1{margin-top:12px;font-size:clamp(1.3rem,3.4vw,1.7rem);font-weight:800;letter-spacing:-.02em;line-height:1.35;color:var(--ink)}
.bv-meta{margin-top:10px;font-size:.86rem;color:var(--muted)}
.bv-body{padding:28px 30px}
.bv-body > :last-child{margin-bottom:0}
/* 문단 + 리드(첫 문단 강조) */
.bv-body p{margin:0 0 15px;font-size:.98rem;line-height:1.85;color:var(--ink-soft)}
.bv-body p.lead{font-size:1.1rem;font-weight:600;color:var(--ink);margin-bottom:20px;letter-spacing:-.01em}
/* 번호 단계 목록 */
.bv-steps{list-style:none;counter-reset:bvs;display:flex;flex-direction:column;gap:12px;margin:0 0 18px}
.bv-steps li{counter-increment:bvs;position:relative;padding-left:40px;line-height:1.65;font-size:.98rem;color:var(--ink-soft)}
.bv-steps li::before{
  content:counter(bvs);position:absolute;left:0;top:0;
  width:26px;height:26px;border-radius:50%;background:var(--blue);color:#fff;
  font-family:var(--latin);font-size:.82rem;font-weight:800;display:grid;place-items:center;
}
/* 불릿 목록 */
.bv-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin:0 0 18px;padding-left:2px}
.bv-list li{position:relative;padding-left:26px;line-height:1.65;font-size:.98rem;color:var(--ink-soft)}
/* 체크마크 (테두리로 그린 ✓) — 중립 회색 */
.bv-list li::before{
  content:"";position:absolute;left:5px;top:.32em;width:6px;height:10px;
  border:solid var(--muted);border-width:0 2px 2px 0;transform:rotate(45deg);
}
/* 속도/사양 표 (본문 "▶ 라벨" 블록 → 하나의 표로 묶임) */
.bv-table-wrap{margin:2px 0 18px;overflow-x:auto}
.bv-table{width:100%;border-collapse:collapse;font-size:.95rem}
.bv-table th,.bv-table td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;line-height:1.65}
.bv-table thead th{background:var(--mist);color:var(--muted);font-weight:700;font-size:.86rem;white-space:nowrap}
.bv-table thead th:first-child{width:112px}
.bv-table td.spd{font-family:var(--latin);font-weight:800;color:var(--blue);white-space:nowrap}
.bv-table td:not(.spd){color:var(--ink-soft)}
.bv-table tbody tr:nth-child(even) td{background:#f7f9fe}
@media(max-width:600px){
  .bv-table th,.bv-table td{padding:10px 11px}
  .bv-table thead th:first-child{width:82px}
  .bv-table td.spd{font-size:.9rem}
}

/* 소제목+설명 블록 (본문 "▶ 라벨" + 문장 설명) */
.bv-sub{margin:0 0 16px}
.bv-sub:last-child{margin-bottom:0}
.bv-sub-k{display:block;font-weight:800;color:var(--ink);font-size:1.02rem;margin-bottom:5px}
.bv-sub-k::before{content:"▶";color:var(--blue);font-size:.72em;margin-right:7px;vertical-align:2px}
.bv-sub-v{display:block;color:var(--ink-soft);line-height:1.75;font-size:.98rem}

/* 서류 다운로드 목록 (가입안내) */
.bv-body .dl-list{list-style:none;margin:14px 0 2px;padding:0;display:flex;flex-direction:column;gap:8px}
.bv-body .dl-list li{margin:0}
.bv-body .dl-list a{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:11px 15px;color:var(--ink);font-weight:600;font-size:.95rem;text-decoration:none;transition:border-color .15s,background .15s,box-shadow .15s}
.bv-body .dl-list a:hover{border-color:#c9d8fb;background:var(--mist);box-shadow:var(--shadow-sm)}
.bv-body .dl-list .dl-ic{flex:none;display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--blue-100);color:var(--blue)}
.bv-body .dl-list .dl-ic svg{width:19px;height:19px}
.bv-body .dl-list .dl-name{flex:1;min-width:0}
.bv-body .dl-list .dl-ext{flex:none;font-family:var(--latin);font-size:.72rem;font-weight:800;letter-spacing:.04em;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:2px 7px}

.bv-empty{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-sm);padding:60px 24px;text-align:center}
.bv-empty p{color:var(--muted);margin-bottom:18px}
.bv-empty .board-btn{display:inline-flex}
@media(max-width:600px){
  .bv-head{padding:22px 18px}
  .bv-body{padding:22px 18px;font-size:.94rem}
}

/* 모바일 */
@media(max-width:600px){
  .board-tabs button{padding:16px 6px;font-size:.92rem}
  .board-filters{padding:14px 14px 2px;gap:6px}
  .board-filters button{font-size:.82rem;padding:7px 12px}
  .board-toolbar{padding:14px}
  .board-search{max-width:none;min-width:0}   /* 좁은 화면에서 넘치지 않게 축소 허용 */
  .acc-q{padding:16px 14px;gap:10px}
  .acc-q-t{font-size:.94rem}
  .acc-a .bv-body{padding:2px 14px 18px}
  .bcat{font-size:.76rem;padding:4px 10px}
}
/* 초소형 화면(Z플립 커버 등): 검색창+버튼은 한 줄 유지, 버튼만 컴팩트하게 */
@media(max-width:420px){
  .board-toolbar{flex-wrap:nowrap}
  .board-search{flex:1;min-width:0}
  .board-btn.search{flex:none;padding:12px 14px}
  .board-tabs button{padding:14px 4px;font-size:.86rem}
}