/* ============================================================
   표준교재 포털 전용 스타일 (portal.css)
   ------------------------------------------------------------
   standard-theme.css 뒤에 로드한다. 팔레트·타이포·브레이크포인트는
   전부 테마의 CSS 변수(--p, --bd, ...)를 재사용하고, 여기서는
   포털 페이지에만 있는 컴포넌트(카드·툴바·파일행)만 정의한다.
   교재 HTML은 이 파일을 로드하지 않는다.
   ============================================================ */

/* 접근성 유틸 */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -9999px; z-index: 2000;
  background: var(--p); color: #fff; padding: 8px 16px; border-radius: 0 0 4px 0;
}
.skip-link:focus { left: 0; top: 0; }

/* JS 필요 요소 — 비활성 환경에선 숨김(전체 목록·앵커는 JS 없이 동작) */
html:not(.js-on) .js-only { display: none; }

/* ── 스티키 툴바 (검색 + 카테고리 칩) ─────────────────────── */
.p-toolbar {
  position: sticky; top: 0; z-index: 500;
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px;
  background: var(--w); border-bottom: 1px solid var(--bd);
  padding: 14px 36px;
}
.p-search { flex: 1 1 260px; max-width: 420px; }
.p-search input {
  width: 100%; padding: 9px 14px;
  border: 1px solid var(--bd); border-radius: 6px;
  font-family: inherit; font-size: 0.8667rem; color: var(--dk);
  background: var(--w);
}
.p-search input:focus {
  outline: none; border-color: var(--p2);
  box-shadow: 0 0 0 2px rgba(61, 119, 184, .18);
}
.p-chips {
  display: flex; gap: 6px; overflow-x: auto;
  scrollbar-width: thin; padding-bottom: 2px;
}
.p-chip {
  display: inline-block; white-space: nowrap;
  border: 1px solid var(--bd); border-radius: 14px;
  background: var(--w); color: var(--md);
  font-family: inherit; font-size: 0.7333rem; font-weight: 600;
  padding: 3px 12px; cursor: pointer; text-decoration: none;
  transition: all .2s;
}
.p-chip:hover { border-color: var(--p2); color: var(--p); }
.p-chip.is-active { background: var(--p); border-color: var(--p); color: #fff; }
.p-count { margin-left: auto; font-size: 0.8rem; color: var(--md); white-space: nowrap; }

/* ── 홈: 카테고리 섹션 + 교재 카드 그리드 ─────────────────── */
.p-catsec, .p-filesec { scroll-margin-top: 76px; }
.p-h2count { font-size: 1rem; font-weight: 600; color: var(--lt); margin-left: 6px; }

.p-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.tb-card {
  position: relative;
  background: var(--w); border: 1px solid var(--bd); border-radius: 6px;
  padding: 18px 20px;
  transition: all .2s;
  display: flex; flex-direction: column;
}
.tb-card:hover {
  border-color: var(--p2);
  box-shadow: 0 4px 14px rgba(14, 34, 64, .10);
  transform: translateY(-2px);
}
.tb-top { display: flex; align-items: center; gap: 8px; }
.tb-date { margin-left: auto; font-size: 0.7333rem; color: var(--lt); }
.tb-draft {
  background: #B71C1C; color: #fff; font-size: 0.6667rem; font-weight: 700;
  padding: 2px 8px; border-radius: 3px; letter-spacing: .5px;
}
.tb-card h3 { font-size: 1.0667rem; line-height: 1.5; margin: 12px 0 6px; }
.tb-card h3 a { color: var(--bk); text-decoration: none; }
.tb-card h3 a:hover { color: var(--p); }
/* 카드 전체 클릭(stretched link) — 하단 칩들은 z-index로 위에 */
.tb-card h3 a::after { content: ""; position: absolute; inset: 0; }
.tb-desc {
  font-size: 0.8667rem; color: var(--md); line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.tb-foot {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: auto; padding-top: 14px;
}

/* ── 다운로드 센터: 섹션 헤더 + 파일 행 ───────────────────── */
.p-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; }
.p-btn {
  display: inline-block; font-size: 0.8667rem; font-weight: 600;
  text-decoration: none; border-radius: 4px; padding: 7px 16px;
  border: 1px solid var(--p); cursor: pointer; font-family: inherit;
  transition: all .2s;
}
.p-btn-primary { background: var(--p); color: #fff; }
.p-btn-primary:hover { background: var(--pd); border-color: var(--pd); }
.p-btn-outline { background: var(--w); color: var(--p); }
.p-btn-outline:hover { background: #F1F5FA; }

.p-filelist { list-style: none; border: 1px solid var(--bd); border-radius: 6px; overflow: hidden; }
.p-filerow {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 14px; border-bottom: 1px solid var(--bd);
  background: var(--w);
}
.p-filerow:last-child { border-bottom: none; }
.p-filerow:hover { background: var(--bg); }
.p-filename { flex: 1; font-size: 0.8667rem; color: var(--dk); text-decoration: none; min-width: 0; }
.p-filename:hover { color: var(--p); text-decoration: underline; }
.p-filesize { font-size: 0.7333rem; color: var(--lt); white-space: nowrap; }

/* 확장자 칩 — 테마 시맨틱 색 재사용 (새 색상 없음) */
.ext-chip {
  flex: none; min-width: 46px; text-align: center;
  font-size: 0.6667rem; font-weight: 700; color: #fff;
  padding: 2px 8px; border-radius: 3px; letter-spacing: .5px;
}
.ext-sheet { background: var(--sec-practice); }  /* xlsx·xlsm·csv */
.ext-doc   { background: var(--sec-demo); }      /* pptx·docx·pdf */
.ext-code  { background: var(--pd); }            /* bas·gs·ipynb·py·js·json */
.ext-web   { background: var(--p2); }            /* html·md·txt */
.ext-zip   { background: var(--bk); }
.ext-etc   { background: var(--md); }

/* h2 안의 번호 배지 위치 보정 */
.p-filesec h2 .mod-num, .tb-top .mod-num { border-radius: 3px; }
.p-filesec h2 .mod-num { vertical-align: middle; margin-right: 10px; }

/* 빈 검색 결과 */
.p-empty { padding: 70px 36px; text-align: center; color: var(--md); }
.p-empty p { margin-bottom: 16px; font-size: 0.9333rem; }

/* 반응형 — 테마와 동일 브레이크포인트 */
@media (max-width: 900px) {
  .p-toolbar { padding: 12px 18px; padding-left: 60px; } /* 햄버거 버튼 자리 */
  .p-count { display: none; }
  .p-empty { padding: 50px 18px; }
}

@media print {
  .p-toolbar, .tb-foot, .p-actions, .skip-link { display: none !important; }
  .tb-card { break-inside: avoid; }
}

/* ============================================================
   강사 인증 페이지 (login·signup·admin) — 포털 전용
   ============================================================ */
.auth-body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background: var(--bg);
  padding: 6vh 20px;
}
.auth-body-wide { align-items: flex-start; }
.auth-wrap { width: 100%; max-width: 420px; }
.auth-wrap-wide { max-width: 860px; }
.auth-card {
  background: var(--w);
  border: 1px solid var(--bd);
  border-radius: 14px;
  padding: 32px 30px;
  box-shadow: 0 8px 30px rgba(27, 79, 138, .08);
}
.auth-card-wide { padding: 28px 30px; }
.auth-brand {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--p);
  margin-bottom: 6px;
}
.auth-title { font-size: 1.5rem; margin: 0 0 6px; color: var(--dk); }
.auth-lead { color: var(--md); font-size: .92rem; margin: 0 0 22px; }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-field { display: flex; flex-direction: column; gap: 6px; font-size: .88rem; color: var(--dk); font-weight: 600; }
.auth-opt { font-weight: 400; color: var(--md); font-style: normal; }
.auth-field input {
  font: inherit;
  padding: 11px 13px;
  border: 1px solid var(--bd);
  border-radius: 9px;
  background: var(--bg);
  color: var(--dk);
}
.auth-field input:focus { outline: 2px solid var(--p); outline-offset: 1px; border-color: var(--p); background: var(--w); }
.auth-btn {
  margin-top: 6px;
  font: inherit;
  font-weight: 700;
  padding: 12px 16px;
  border: 0;
  border-radius: 9px;
  background: var(--p);
  color: var(--w);
  cursor: pointer;
}
.auth-btn:hover { background: var(--pd); }
.auth-msg { margin: 14px 0 0; padding: 11px 13px; border-radius: 9px; font-size: .88rem; }
.auth-msg.is-err { background: #fdecec; color: #b3261e; border: 1px solid #f5c6c2; }
.auth-msg.is-ok { background: #e8f5ec; color: #1b7f43; border: 1px solid #b6e0c4; }
.auth-alt { margin: 20px 0 0; font-size: .88rem; color: var(--md); text-align: center; }
.auth-alt a, .auth-nav a, .auth-linkbtn { color: var(--p); font-weight: 600; text-decoration: none; }
.auth-alt a:hover, .auth-nav a:hover { text-decoration: underline; }
.auth-topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 8px; }
.auth-nav { display: flex; gap: 16px; align-items: center; font-size: .9rem; }
.auth-linkbtn { background: none; border: 0; font: inherit; cursor: pointer; padding: 0; }

/* 관리자 강사 목록 표 */
.admin-summary { font-size: .9rem; color: var(--md); margin: 4px 0 16px; }
.admin-summary strong { color: var(--p); }
.admin-empty { color: var(--md); }
.ad-scroll { overflow-x: auto; }
.ad-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.ad-table th, .ad-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--bd); white-space: nowrap; }
.ad-table th { color: var(--md); font-weight: 600; font-size: .82rem; }
.ad-actions { display: flex; gap: 8px; }
.ad-table button {
  font: inherit; font-size: .82rem; font-weight: 600;
  padding: 6px 12px; border-radius: 7px; border: 0; cursor: pointer;
  background: var(--p); color: var(--w);
}
.ad-table button:hover { background: var(--pd); }
.ad-table button.ad-secondary { background: var(--bg); color: var(--md); border: 1px solid var(--bd); }
.ad-table button.ad-secondary:hover { background: var(--bd); color: var(--dk); }
.ad-badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: .78rem; font-weight: 700; }
.ad-badge.ad-ok { background: #e8f5ec; color: #1b7f43; }
.ad-badge.ad-wait { background: #fff4e0; color: #a9631a; }
.ad-badge.ad-no { background: #fdecec; color: #b3261e; }
.ad-badge.ad-admin { background: var(--p); color: var(--w); }

/* ============================================================
   강사 대시보드 (교재 선택·공유링크)
   ============================================================ */
.dash-sec { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--bd); }
.dash-h2 { font-size: 1.05rem; color: var(--dk); margin: 0 0 14px; }
.dash-toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.dash-label { flex: 1; min-width: 220px; font: inherit; padding: 9px 12px; border: 1px solid var(--bd); border-radius: 8px; background: var(--bg); color: var(--dk); }
.dash-label:focus { outline: 2px solid var(--p); outline-offset: 1px; border-color: var(--p); background: var(--w); }
.dash-selall { font-size: .88rem; color: var(--md); display: flex; align-items: center; gap: 6px; white-space: nowrap; cursor: pointer; }
.dash-picker { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.dash-group { border: 1px solid var(--bd); border-radius: 10px; padding: 12px 14px; background: var(--bg); }
.dash-gh { font-size: .82rem; font-weight: 700; color: var(--p); margin-bottom: 8px; }
.dash-gc { color: var(--md); font-weight: 400; }
.dash-item { display: flex; align-items: center; gap: 8px; padding: 5px 0; font-size: .88rem; color: var(--dk); cursor: pointer; }
.dash-item input { flex: none; }
.dash-num { font-variant-numeric: tabular-nums; color: var(--md); font-size: .8rem; min-width: 34px; }
.dash-tt { flex: 1; }
.dash-fc { font-size: .74rem; color: var(--md); background: var(--w); border: 1px solid var(--bd); border-radius: 20px; padding: 1px 7px; }
.dash-actions { display: flex; align-items: center; gap: 14px; margin-top: 16px; }
.dash-selcount { font-size: .9rem; color: var(--md); }
.dash-result { margin-top: 16px; }
.dash-ok { font-size: .9rem; color: #1b7f43; font-weight: 600; margin-bottom: 8px; }
.dash-urlrow { display: flex; gap: 8px; align-items: center; }
.dash-url { flex: 1; font: inherit; font-size: .85rem; padding: 9px 12px; border: 1px solid var(--bd); border-radius: 8px; background: var(--bg); color: var(--dk); }
.dash-links { display: flex; flex-direction: column; gap: 12px; }
.dash-empty { color: var(--md); }
.dash-link { border: 1px solid var(--bd); border-radius: 10px; padding: 14px 16px; }
.dash-link-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.dash-link-name { font-weight: 700; color: var(--dk); }
.dash-link-meta { font-size: .84rem; color: var(--md); white-space: nowrap; }
.dash-remain { color: var(--p); font-weight: 600; }
.dash-copy, .dash-close { flex: none; padding: 9px 14px; font-size: .84rem; }

/* ============================================================
   강사 콘솔 — 전역 헤더 + 탭
   ============================================================ */
.console-body { margin: 0; background: var(--bg); min-height: 100vh; }
.app-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 0 24px; height: 56px;
  background: var(--w); border-bottom: 1px solid var(--bd);
}
.app-brand { font-weight: 800; color: var(--p); text-decoration: none; font-size: 1rem; letter-spacing: -.01em; }
.app-nav { display: flex; align-items: center; gap: 18px; font-size: .9rem; }
.app-nav > a { color: var(--dk); text-decoration: none; font-weight: 600; }
.app-nav > a:hover { color: var(--p); }
.app-account { display: flex; align-items: center; gap: 12px; }
.app-acctname { color: var(--md); font-size: .86rem; }
.app-logout { font: inherit; font-size: .84rem; font-weight: 600; padding: 6px 12px; border: 1px solid var(--bd); border-radius: 8px; background: var(--bg); color: var(--dk); cursor: pointer; }
.app-logout:hover { background: var(--bd); }

.console { max-width: 1000px; margin: 0 auto; padding: 26px 24px 60px; }
.console-title { font-size: 1.5rem; color: var(--dk); margin: 0 0 18px; }
.console-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--bd); margin-bottom: 22px; flex-wrap: wrap; }
.ctab {
  font: inherit; font-size: .95rem; font-weight: 600; cursor: pointer;
  padding: 11px 18px; border: 0; background: none; color: var(--md);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.ctab:hover { color: var(--dk); }
.ctab.is-active { color: var(--p); border-bottom-color: var(--p); }
.ctab-badge { display: inline-block; margin-left: 6px; min-width: 18px; padding: 0 6px; font-size: .74rem; line-height: 18px; text-align: center; border-radius: 20px; background: #d64545; color: #fff; font-weight: 700; }
.cpanel-lead { color: var(--md); font-size: .92rem; margin: 0 0 18px; }
.dash-goto { flex: none; padding: 9px 14px; font-size: .84rem; }

/* 포털 홈 사이드바 계정 메뉴 (로그인한 강사) */
.sidebar-account { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.sidebar-dash { color: var(--w); background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25); border-radius: 8px; padding: 8px 12px; text-decoration: none; font-size: .88rem; font-weight: 600; }
.sidebar-dash:hover { background: rgba(255,255,255,.2); }
.sidebar-logout { font: inherit; font-size: .82rem; text-align: left; color: rgba(255,255,255,.75); background: none; border: 0; padding: 2px 4px; cursor: pointer; }
.sidebar-logout:hover { color: var(--w); text-decoration: underline; }