/* =================================================================
   초코 문제은행 (mbank.chocolab.co.kr) — ui.css · type.css 위에 덮어쓴다.
   벤처랩과 같은 바탕·글꼴·카드. 원칙: 심플, 파스텔, 장식 없이.
   ================================================================= */
:root {
  --bg: #F6F7FB;
  --paper: #FFFFFF;
  --line: #E3E0EC;
  --ink: #2B2730;
  --ink-2: #4F4A5A;
  --ink-3: #7A7588;
  --cream: #F6F7FB; --cream-2: #EEEDF5;
  --site: #E7E1FF; --site-ink: #5B47B8;
  --btn: #2B2730; --btn-ink: #FFFFFF;
  --radius: 20px;
  --shadow: 0 1px 2px rgba(43, 39, 48, .05), 0 8px 24px -14px rgba(43, 39, 48, .18);
  --f-title: 'Pretendard Variable', Pretendard, 'Noto Sans KR', sans-serif;
  --f-body: 'Pretendard Variable', Pretendard, 'Noto Sans KR', system-ui, sans-serif;
}
body { background: var(--bg); background-image: none; font-family: var(--f-body); }
.top { background: rgba(246, 247, 251, .94); border-bottom: 1px solid var(--line); }
.top .wrap { height: auto; min-height: 64px; }
.brand img { width: 36px; height: 36px; border: 0; border-radius: 0; background: transparent; object-fit: contain; }
.brand b { font-family: var(--f-title); font-weight: 800; font-size: 22px; letter-spacing: -.02em; }
h1 { font-family: var(--f-title); font-weight: 800; font-size: 28px; letter-spacing: -.025em; margin: 26px 0 16px; }
.card { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); }
.pill-site { background: var(--btn); color: var(--btn-ink); }
.pill-site:disabled { opacity: .35; cursor: default; }

.mb-nav { display: flex; gap: 2px; margin-left: 12px; }
.mb-nav a { padding: 9px 13px; border-radius: 12px; text-decoration: none; font-size: 16px; font-weight: 700; color: var(--ink-2); white-space: nowrap; }
.mb-nav a:hover { background: #fff; color: var(--ink); }
.mb-nav a[aria-current] { background: var(--ink); color: #fff; }

.soon { display: flex; align-items: center; gap: 18px; padding: 22px; max-width: 640px; }
.soon img { width: 88px; height: 88px; object-fit: contain; }
.soon p { margin: 0; font-size: 17px; color: var(--ink-2); }

/* 내 문제지 카드 */
.paper-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.paper-card { display: flex; flex-direction: column; gap: 10px; padding: 16px; text-decoration: none; color: var(--ink); }
.paper-card .thumb { aspect-ratio: 210 / 297; border-radius: 12px; background: #fff; border: 1px solid var(--line); overflow: hidden; position: relative; }
.paper-card .thumb i { position: absolute; left: 8%; right: 8%; top: 6%; height: 7%; border-radius: 99px; }
.paper-card .thumb b { position: absolute; left: 10%; top: 19%; font-size: 15px; }
.paper-card .thumb s { position: absolute; left: 50%; top: 18%; bottom: 6%; border-left: 1px solid var(--line); }
.paper-card .t { font-size: 17px; font-weight: 800; }
.paper-card .m { font-size: 14px; color: var(--ink-3); }
.paper-card.new { align-items: center; justify-content: center; border: 2px dashed var(--line); box-shadow: none; background: transparent; min-height: 200px; font-weight: 800; color: var(--ink-2); }

/* 미리보기: 왼쪽 시험지, 오른쪽 설정 */
.preview-view { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; padding: 20px; max-width: 1400px; margin: 0 auto; }
.pv-stage { min-width: 0; }
.pv-pages { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; justify-items: center; }
.pv-side { position: sticky; top: 84px; align-self: start; padding: 20px; display: grid; gap: 14px; }
.pv-side .field { display: grid; gap: 6px; margin: 0; }
.pv-side .field > span { font-size: 15px; font-weight: 700; color: var(--ink-2); }
.swatches { display: flex; gap: 8px; flex-wrap: wrap; }
.swatches button { width: 34px; height: 34px; border-radius: 50%; border: 2px solid #fff; box-shadow: 0 0 0 1px var(--line); cursor: pointer; }
.swatches button[aria-pressed="true"] { box-shadow: 0 0 0 2.5px var(--ink); }
.seg { display: flex; background: var(--bg); border-radius: 12px; padding: 3px; }
.seg button { flex: 1; white-space: nowrap; padding-left: 12px; padding-right: 12px; border: 0; background: none; padding: 8px 0; border-radius: 10px; font: inherit; font-size: 15px; font-weight: 700; color: var(--ink-2); cursor: pointer; }
.seg button[aria-pressed="true"] { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0, 0, 0, .08); }
.check { display: flex; gap: 8px; align-items: center; font-size: 15px; color: var(--ink-2); }
.pv-side .big { width: 100%; padding: 14px; font-size: 17px; }

@media (max-width: 900px) {
  .preview-view { grid-template-columns: 1fr; padding: 12px; }
  .pv-side { position: static; order: -1; }
  .top .wrap { flex-wrap: wrap; padding-top: 8px; }
  .mb-nav { order: 9; width: 100%; margin: 4px 0 6px; overflow-x: auto; }
}

/* 들어오기 전 */
.gate { max-width: 480px; margin: 60px auto; padding: 32px; text-align: center; }
.gate img { width: 120px; height: 120px; object-fit: contain; }
.gate h1 { margin: 10px 0 6px; }
.gate p { color: var(--ink-2); margin: 0 0 18px; }

/* 문제지 만들기 */
.make-view { display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 20px; padding: 20px; max-width: 1400px; margin: 0 auto; }
.tree-box { position: sticky; top: 84px; align-self: start; padding: 14px; display: grid; gap: 10px; max-height: calc(100vh - 104px); grid-template-rows: auto auto minmax(0, 1fr); }
.subj { display: flex; gap: 6px; flex-wrap: wrap; }
.subj button { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 6px 12px; font: inherit; font-size: 15px; font-weight: 700; color: var(--ink-2); cursor: pointer; }
.subj button[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.tree { overflow: auto; font-size: 15px; }
.tree details { margin-left: 12px; }
.tree > details { margin-left: 0; }
.tree summary { list-style: none; display: flex; align-items: center; gap: 6px; padding: 5px 6px; border-radius: 10px; cursor: pointer; }
.tree summary::-webkit-details-marker { display: none; }
.tree summary::before { content: '›'; width: 12px; color: var(--ink-3); transition: transform .15s; }
.tree details[open] > summary::before { transform: rotate(90deg); }
.tree details.leaf > summary::before { content: ''; }
.tree summary:hover { background: var(--bg); }
.tree summary .nm { flex: 1; min-width: 0; }
.tree summary .ct { font-size: 13px; color: var(--ink-3); }
.tree summary input { width: 17px; height: 17px; accent-color: var(--ink); }
.tree .lv-대단원 > summary { font-weight: 800; }
.tree .lv-중단원 > summary { font-weight: 700; }

.make-main { min-width: 0; display: grid; gap: 16px; align-content: start; }
.cond { padding: 16px 18px; display: grid; gap: 12px; }
.cond-row { display: flex; gap: 18px; align-items: end; flex-wrap: wrap; }
.cond .field { margin: 0; display: grid; gap: 6px; }
.cond .field > span { font-size: 15px; font-weight: 700; color: var(--ink-2); }
.nfield .input { width: 90px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chips button { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 7px 12px; font: inherit; font-size: 15px; font-weight: 700; color: var(--ink-2); cursor: pointer; }
.chips button[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.picked { flex: 1; margin: 0; font-size: 15px; color: var(--ink-2); min-width: 200px; }
.paper-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.paper-head .title-in { flex: 1; min-width: 200px; font-size: 18px; font-weight: 800; }
.paper-head .count { font-size: 15px; font-weight: 700; color: var(--ink-3); }

/* 담은 문항 카드 */
.cards { display: grid; gap: 12px; }
.qcard { display: grid; grid-template-columns: 54px minmax(0, 1fr) auto; gap: 12px; padding: 16px; align-items: start; }
.qcard .k { font-size: 22px; font-weight: 800; color: var(--ink-3); }
.qcard .q { padding: 0; overflow: visible; }
.qcard .q .no { display: none; }
.qcard .meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.qcard .meta span { font-size: 13px; font-weight: 700; padding: 2px 9px; border-radius: 999px; background: var(--bg); color: var(--ink-2); }
.qcard .meta .src { background: #FFF1C7; color: #8A6400; }
.qcard .acts { display: grid; gap: 6px; }
.qcard .acts button { border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 6px 10px; font: inherit; font-size: 14px; font-weight: 700; color: var(--ink-2); cursor: pointer; white-space: nowrap; }
.qcard .acts button:hover { background: var(--bg); color: var(--ink); }
.empty { padding: 40px 20px; text-align: center; color: var(--ink-3); }
.empty img { width: 96px; height: 96px; object-fit: contain; display: block; margin: 0 auto 8px; }

/* 바꿀 문항 고르기 창 */
dialog.swap { border: 0; border-radius: 20px; padding: 0; width: min(760px, calc(100vw - 32px)); max-height: 86vh; box-shadow: var(--shadow); }
dialog.swap::backdrop { background: rgba(43, 39, 48, .35); }
.swap .hd { display: flex; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); font-weight: 800; font-size: 17px; }
.swap .hd button { margin-left: auto; border: 0; background: none; font-size: 22px; cursor: pointer; }
.swap .bd { padding: 14px 18px; display: grid; gap: 10px; overflow: auto; max-height: 72vh; }
.swap .opt { border: 1px solid var(--line); border-radius: 14px; padding: 12px; cursor: pointer; }
.swap .opt:hover { border-color: var(--ink); }
.lk-toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 100; background: #2B2730; color: #fff; padding: 12px 18px; border-radius: 14px; font-size: 16px; }
.lk-toast.err { background: #B4432E; }

@media (max-width: 900px) {
  .make-view { grid-template-columns: 1fr; padding: 12px; }
  .tree-box { position: static; max-height: 50vh; }
  .qcard { grid-template-columns: 1fr; }
  .qcard .acts { display: flex; flex-wrap: wrap; }
}
.cond .seg { min-width: 250px; }
.cond .seg button { padding: 8px 14px; }