@import url('./pdf-ink.css');
/* Document workspace uses the same Pretendard and neutral surfaces as the app. */
.book-reader__ink{position:absolute;left:50%;top:50%;transform-origin:center;max-width:none;display:block}
.book-reader[aria-busy=true] .book-reader__ink{pointer-events:none!important}
.book-reader-active #main{padding:0;max-width:none;min-height:0}
.book-reader-active .footer{display:none}
.book-reader{--book-page-scale:1;--book-border:#dfe4ec;--book-muted:#69707d;color:#151820;min-width:0;height:100dvh;min-height:0;display:flex;flex-direction:column;overflow:hidden;background:#fff;border:0;border-radius:0;font-family:var(--font-ui,"Pretendard Variable",Pretendard,sans-serif);font-size:14px;line-height:1.6;letter-spacing:0}
.book-reader *{box-sizing:border-box}
.book-reader [hidden]{display:none!important}
.book-reader h1,.book-reader h2,.book-reader p,.book-reader figure{margin:0}
.book-reader button,.book-reader input,.book-reader select,.book-reader textarea{font-family:inherit;letter-spacing:0}
.book-reader__button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:44px;padding:8px 12px;border:1px solid var(--book-border);border-radius:8px;background:#fff;color:#151820;font-size:14px;font-weight:600;line-height:1.4;text-decoration:none;cursor:pointer;white-space:nowrap;flex-shrink:0}
.book-reader__button:hover{background:#f1f4f7;border-color:#c0c8d4}
.book-reader__button--primary,.book-reader__button[aria-pressed=true]{background:#111827;color:#fff;border-color:#111827}
.book-reader__button--primary:hover{background:#263246;border-color:#263246}
.book-reader__button:disabled{cursor:default;opacity:.45}
.book-reader :is(button,input,select,textarea,a,summary):focus-visible,.book-reader__viewport:focus-visible{outline:2px solid #365d99;outline-offset:-2px}
.book-reader :is(input:not([type=range]),select,textarea){min-height:44px;padding:8px 12px;border:1px solid var(--book-border);border-radius:8px;background:#fff;color:#151820;font-size:16px;line-height:1.5;max-width:100%;min-width:0}
.book-reader textarea{resize:vertical;min-height:104px}
.book-reader input:disabled{background:#f1f4f7;color:var(--book-muted)}
.book-reader__heading{display:grid;grid-template-columns:44px auto minmax(0,1fr) auto auto;align-items:center;gap:8px;padding:8px 12px;min-height:64px;border-bottom:1px solid var(--book-border);flex-shrink:0}
.book-reader__menu{padding:0;font-size:18px}
.book-reader__heading>[data-book-back]{font-size:12px}
.book-reader__timer-dock{min-width:0;justify-self:end}
.book-reader__timer-dock:empty{display:none}
.book-reader__heading>[data-book-focus]{font-size:12px}
.book-reader__title{flex:1;min-width:0}
.book-reader__title h1{font-size:18px;font-weight:600;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book-reader__title>span{display:block;color:var(--book-muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book-reader__toolbar-shell{position:relative;display:flex;align-items:center;gap:8px;padding:4px 12px;min-height:56px;border-bottom:1px solid var(--book-border);flex-shrink:0;z-index:40;background:#fff}
.book-reader__toolbar{display:flex;align-items:center;gap:8px;min-width:0;flex:1}
.book-reader__more{position:static;flex-shrink:0;margin-left:auto}
.book-reader__more>summary{list-style:none;font-size:12px;font-weight:600}
.book-reader__more>summary::-webkit-details-marker{display:none}
.book-reader__more[open]>summary{background:#f1f4f7;border-color:#69707d}
.book-reader__more-panel{position:absolute;right:12px;top:calc(100% + 4px);width:304px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 152px);overflow:auto;display:grid;gap:12px;padding:16px;border:1px solid #bcc5d1;border-radius:10px;background:#fff}
.book-reader__more:not([open])>.book-reader__more-panel{display:none}
.book-reader__more-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}
.book-reader__more-row .book-reader__button{padding:8px;font-size:12px}
.book-reader__pagination,.book-reader__goto{display:flex;align-items:center;gap:4px;flex-shrink:0;margin:0}
.book-reader__goto input{width:64px;text-align:center;padding:8px 4px;font-variant-numeric:tabular-nums;font-weight:600}
.book-reader__goto>span{white-space:nowrap;font-size:12px;color:var(--book-muted);font-variant-numeric:tabular-nums}
.book-reader__goto .book-reader__button{padding:8px}
.book-reader__zoom{display:flex;flex-direction:row;align-items:center;gap:8px;font-size:12px;font-weight:500;min-height:44px;min-width:0}
.book-reader__zoom input{width:100%;flex:1;min-width:44px;min-height:44px;padding:0;accent-color:#111827;cursor:pointer}
.book-reader__zoom output{min-width:40px;font-variant-numeric:tabular-nums;font-weight:600}
.book-reader__workspace{position:relative;display:grid;grid-template-columns:minmax(0,1fr);flex:1;min-height:0;min-width:0;overflow:hidden}
.book-reader--notes-open .book-reader__workspace{grid-template-columns:minmax(0,1fr) clamp(300px,36%,420px)}
.book-reader--navigation-open .book-reader__workspace{grid-template-columns:240px minmax(0,1fr)}
.book-reader--navigation-open.book-reader--notes-open .book-reader__workspace{grid-template-columns:240px minmax(0,1fr) clamp(300px,36%,420px)}
.book-reader__document{min-width:0;min-height:0;overflow:hidden;background:#f1f4f7}
.book-reader__viewport{height:100%;width:100%;overflow:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;position:relative;padding:12px;background:#f1f4f7}
.book-reader__page{position:relative;width:calc(100% * var(--book-page-scale));margin-inline:auto!important;background:#fff;flex-shrink:0}
.book-reader__page img{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:block;max-width:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;transform-origin:center;cursor:grab}
.book-reader__viewport--panning,.book-reader__viewport--panning .book-reader__page img{cursor:grabbing}
.pdf-document-stream{position:relative;min-width:100%;overflow-anchor:none}
.pdf-document-page-slot{position:absolute;left:0;right:0;overflow:visible}
.pdf-document-page{overflow:hidden;outline:1px solid #dfe4ec;overflow-anchor:none}
.pdf-document-page-label{height:32px;line-height:32px;text-align:center;color:#69707d;font-size:12px;font-variant-numeric:tabular-nums;user-select:none}
.pdf-document-page-feedback{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:16px;text-align:center;color:#69707d;font-size:14px;pointer-events:none}
.pdf-document-page-feedback>.book-reader__button{pointer-events:auto;white-space:normal}
.pdf-document-page-message{max-width:100%;overflow-wrap:anywhere}
.book-reader__viewport--continuous{overflow-anchor:none;scroll-behavior:auto}
.book-reader__image-status,.book-reader__image-error{padding:48px 24px;text-align:center;color:var(--book-muted);max-width:520px;margin:auto!important}
.book-reader__image-error .book-reader__button{margin-top:16px}
.book-reader__notes{min-width:0;min-height:0;display:flex;flex-direction:column;border-left:1px solid var(--book-border);background:#fff;overflow:hidden}
.book-reader__notes-header{display:flex;align-items:center;gap:8px;min-height:56px;padding:4px 8px;border-bottom:1px solid var(--book-border)}
.book-reader__notes-header>div{flex:1;min-width:0}
.book-reader__notes-header h2{font-size:14px;font-weight:600;line-height:1.4}
.book-reader__notes-header p{font-size:12px;color:var(--book-muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.book-reader__notes-header .book-reader__button{font-size:12px;padding:8px}
.book-reader__drawing{position:relative;flex:1;min-height:0}
.book-reader__drawing iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block;background:#fff}
.book-reader--notes-full .book-reader__notes{position:fixed;inset:8px;z-index:190;border:1px solid var(--book-border);border-radius:10px}
.book-reader__navigation{display:flex;flex-direction:column;min-height:0;min-width:0;overflow:hidden;background:#fff;border-right:1px solid var(--book-border)}
.book-reader__nav-heading{display:flex;align-items:center;justify-content:space-between;padding:4px 8px 4px 16px;min-height:52px}
.book-reader__nav-heading strong{font-size:14px;font-weight:600}
.book-reader__nav-heading .book-reader__button{border-color:transparent;font-size:24px;font-weight:400}
.book-reader__nav-tabs{display:flex;padding:0 8px;border-bottom:1px solid var(--book-border);flex-shrink:0}
.book-reader__nav-tabs button{min-width:0;min-height:44px;flex:1;border:0;border-bottom:2px solid transparent;background:#fff;color:var(--book-muted);font-size:12px;white-space:nowrap;padding:8px;cursor:pointer}
.book-reader__nav-tabs button[aria-selected=true]{border-bottom-color:#111827;color:#111827;font-weight:600}
.book-reader__nav-tabs span{font-variant-numeric:tabular-nums}
.book-reader__nav-search{padding:12px 12px 0}
.book-reader__nav-search input{width:100%;padding-inline:8px!important}
.book-reader__nav-panel{padding:12px;flex:1;min-height:0;overflow:auto}
.book-reader__pages-panel{display:flex;flex-direction:column;padding:4px 12px 12px;overflow:hidden}
.book-reader__group{display:flex;align-items:center;justify-content:space-between;gap:4px;flex-shrink:0}
.book-reader__group>span{font-size:12px;font-weight:600;font-variant-numeric:tabular-nums}
.book-reader__group .book-reader__button{border-color:transparent}
.book-reader__current-page{border:0;background:transparent;color:var(--book-muted);font-size:12px;min-height:44px;cursor:pointer;flex-shrink:0}
.book-reader__thumbnails{list-style:none;padding:0 4px 0 0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 8px;overflow:auto;align-content:start;min-height:0;flex:1}
.book-reader__thumbnails li{min-width:0}
.book-reader__thumbnail{width:100%;border:1px solid var(--book-border);border-radius:8px;background:#f6f7f9;padding:4px;cursor:pointer;color:#69707d;min-height:44px}
.book-reader__thumbnail.is-current{border:2px solid #111827;padding:3px;color:#111827;background:#f1f4f7}
.book-reader__thumbnail-paper{display:flex;align-items:center;justify-content:center;width:100%;aspect-ratio:1 / 1.42;background:white;overflow:hidden;position:relative}
.book-reader__thumbnail-paper img{width:100%;height:100%;object-fit:contain}
.book-reader__thumbnail-paper>span{font-size:12px;padding:4px;overflow-wrap:anywhere}
.book-reader__thumbnail-number{display:block;font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;line-height:24px}
.book-reader__thumbnail-retry{width:100%;font-size:12px;padding:4px;white-space:normal;margin-top:4px}
.book-reader__nav-description{color:var(--book-muted);font-size:12px;margin-bottom:12px!important}
.book-reader__bookmarks form{display:flex;flex-direction:column;gap:8px;margin:0 0 16px}
.book-reader__bookmarks label{display:grid;gap:4px;font-size:12px}
.book-reader__bookmarks input{width:100%}
.book-reader__bookmarks ul,.book-reader__toc-list{display:grid;gap:8px;list-style:none;margin:0;padding:0}
.book-reader__bookmarks li,.book-reader__toc-list li{display:flex;align-items:center;gap:4px;min-width:0}
.book-reader__bookmark-link{flex:1;min-width:0;align-items:flex-start;flex-direction:column;text-align:left;white-space:normal;overflow-wrap:anywhere;font-weight:500;gap:4px;padding:8px}
.book-reader__bookmark-link small,.book-reader__bookmark-empty{color:var(--book-muted);font-size:12px;font-weight:400}
.book-reader__bookmarks [data-book-bookmark-remove]{font-size:12px;padding:8px}
.book-reader__info{border-top:1px solid var(--book-border);flex-shrink:0;max-height:44%;overflow:auto}
.book-reader__info summary{min-height:44px;padding:12px;font-size:12px;color:var(--book-muted);cursor:pointer}
.book-reader__info>div{padding:0 12px 12px;font-size:12px;color:var(--book-muted)}
.book-reader__info p{margin-bottom:12px!important}
.book-reader__download{font-size:12px;white-space:normal;width:100%}
.book-reader__coverage{border-left:2px solid #a57d29;padding-left:8px;color:#745c2b}
.book-reader__statusbar{display:flex;align-items:center;gap:12px;padding:4px 12px;min-height:32px;border-top:1px solid var(--book-border);font-size:12px;color:var(--book-muted);flex-shrink:0;flex-wrap:wrap}
.book-reader__page-label{font-variant-numeric:tabular-nums;font-weight:600;color:#151820}
.book-reader__statusbar .book-reader__button{font-size:12px;padding:4px 8px}
.book-reader__keyboard-hint{margin-left:auto;font-size:12px}
.book-reader__pan-hint{margin-left:auto;font-size:12px}
.book-reader__viewport--panning{outline:2px solid #69707d;outline-offset:-2px}
.book-reader__notice{border-bottom:1px solid #e3c5c5;border-left:2px solid #a64242;padding:8px 12px;background:#fff5f5;color:#873737;font-size:12px;flex-shrink:0;max-height:100px;overflow:auto}
.book-reader__eyebrow{font-size:12px;font-weight:500;color:var(--book-muted)}
.book-reader-focus{overflow:hidden}
.book-reader-focus :is(.topbar,.footer){display:none!important}
.book-reader--focus{position:fixed;inset:0;height:100dvh;min-height:0;border:0;border-radius:0;z-index:180}
.book-reader__dialog{width:calc(100% - 32px);max-width:640px;max-height:calc(100dvh - 32px);overflow:auto;border:1px solid var(--book-border);border-radius:10px;padding:24px;background:#fff;color:#151820;font-family:inherit;font-size:14px;line-height:1.6;letter-spacing:0}
.book-reader__dialog::backdrop{background:rgb(21 24 32 / .4)}
.book-reader__dialog form{margin:0;display:grid;gap:16px}
.book-reader__dialog-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.book-reader__dialog-heading h2{font-size:18px;font-weight:600;margin-top:4px}
.book-reader__dialog-intro{color:var(--book-muted)}
.book-reader__field{display:flex;flex-direction:column;gap:8px;font-size:12px;font-weight:500;min-width:0}
.book-reader__field textarea{font-weight:400}
.book-reader__answer-source{display:grid;grid-template-columns:minmax(0,1fr) 112px;gap:12px;border:1px solid var(--book-border);border-radius:8px;padding:12px 16px 16px;min-width:0;margin:0}
.book-reader__answer-source legend{padding:0 4px;font-size:12px;font-weight:500}
.book-reader__answer-source legend span{color:var(--book-muted);margin-left:8px;font-weight:400}
.book-reader__dialog-actions{display:flex;justify-content:flex-end;gap:8px;border-top:1px solid var(--book-border);padding-top:16px}
.book-reader--question-open .book-reader__workspace{grid-template-columns:minmax(0,1fr) minmax(300px,360px)}
.book-reader--question-open.book-reader--navigation-open .book-reader__workspace{grid-template-columns:240px minmax(0,1fr) minmax(300px,360px)}
.book-reader__gpt-panel{display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;border-left:1px solid var(--book-border);background:#fff}
.book-reader__gpt-heading{display:flex;align-items:center;gap:8px;padding:8px 12px;border-bottom:1px solid var(--book-border);flex-shrink:0}
.book-reader__gpt-heading>div{flex:1;min-width:0}
.book-reader__gpt-heading h2{font-size:18px;font-weight:600;line-height:1.4}
.book-reader__gpt-heading span{font-size:12px;color:var(--book-muted)}
.book-reader__gpt-content{display:flex;flex-direction:column;gap:12px;padding:12px;overflow:auto;min-height:0;overscroll-behavior:contain}
.book-reader__gpt-context{display:grid;gap:4px;border-left:2px solid #69707d;padding-left:8px;overflow-wrap:anywhere}
.book-reader__gpt-context strong{font-size:14px;font-weight:600}
.book-reader__gpt-context span{font-size:12px;font-weight:600;font-variant-numeric:tabular-nums}
.book-reader__gpt-context small{font-size:12px;color:var(--book-muted)}
.book-reader__question-intents,.book-reader__question-actions{display:flex;flex-wrap:wrap;gap:4px}
.book-reader__question-intents .book-reader__button{font-size:12px;padding:8px}
.book-reader__question-actions{gap:8px}
.book-reader__question-actions>*{flex:1;font-size:12px;padding:8px}
.book-reader__question-save{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.book-reader__question-save>span{flex:1;min-width:100px;font-size:12px;color:var(--book-muted);overflow-wrap:anywhere}
.book-reader__question-save .book-reader__button{font-size:12px;padding:8px}
.book-reader__question-help,.book-reader__question-image small,.book-reader__question-answer p{font-size:12px;color:var(--book-muted)}
.book-reader__question-image{display:flex;flex-direction:column;gap:8px;padding-top:12px;border-top:1px solid var(--book-border)}
.book-reader__question-image .book-reader__button{font-size:12px;white-space:normal}
.book-reader__question-message{font-size:12px;border-left:2px solid #69707d;background:#f1f4f7;padding:8px;overflow-wrap:anywhere}
.book-reader__question-conflict{display:grid;gap:8px;padding:12px;border:1px solid var(--book-border);border-radius:8px;background:#f1f4f7}
.book-reader__question-conflict>p{font-size:12px;color:var(--book-muted)}
.book-reader__question-conflict .book-reader__button{font-size:12px;white-space:normal}
.book-reader__question-answer{border-top:1px solid var(--book-border);padding-top:4px}
.book-reader__question-answer summary{min-height:44px;cursor:pointer;padding:12px 0;font-size:12px;font-weight:600}
.book-reader__question-answer p{margin-top:8px!important}
.book-reader__gpt-content textarea{width:100%;font-weight:400}
.book-reader__sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1399px){
  .book-reader__keyboard-hint{display:none}
  .book-reader--navigation-open .book-reader__workspace{grid-template-columns:minmax(0,1fr)}
  .book-reader--navigation-open.book-reader--notes-open .book-reader__workspace{grid-template-columns:minmax(0,1fr) clamp(300px,36%,420px)}
  .book-reader--question-open.book-reader--navigation-open .book-reader__workspace{grid-template-columns:minmax(0,1fr) minmax(300px,360px)}
  .book-reader__navigation{position:absolute;inset:0 auto 0 0;width:280px;max-width:calc(100% - 44px);z-index:30;border-right:1px solid #bcc5d1}
}
@media(max-width:979px){
  .book-reader__heading>[data-book-back],.book-reader__heading>[data-book-focus]{padding:8px}
  .book-reader__title h1{font-size:16px}
  .book-reader__toolbar{gap:4px}
  .book-reader__toolbar .book-reader__button{font-size:12px;padding:8px}
}
@media(max-width:767px){
  .book-reader__heading{grid-template-columns:44px minmax(0,1fr) auto;grid-template-areas:"menu title focus" "back timer timer";padding:8px;gap:8px}
  .book-reader__menu{grid-area:menu}
  .book-reader__title{grid-area:title}
  .book-reader__title h1{font-size:14px}
  .book-reader__heading>[data-book-back]{grid-area:back;width:44px;padding:0;font-size:0}
  .book-reader__heading>[data-book-back]::before{content:"←";font-size:18px}
  .book-reader__timer-dock{grid-area:timer}
  .book-reader__heading>[data-book-focus]{grid-area:focus}
  .book-reader__toolbar-shell{padding-inline:8px;gap:4px}
  .book-reader__toolbar{overflow-x:auto;scrollbar-width:thin;overscroll-behavior-x:contain}
  .book-reader__more>summary{padding:8px}
  .book-reader__more-panel{right:8px;max-width:calc(100vw - 16px);max-height:calc(100dvh - 200px)}
  .book-reader--notes-open .book-reader__workspace,.book-reader--navigation-open.book-reader--notes-open .book-reader__workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,3fr) minmax(0,2fr)}
  .book-reader__notes{border-left:0;border-top:1px solid var(--book-border)}
  .book-reader__notes-header{min-height:48px}
  .book-reader__notes-header p{display:none}
  .book-reader__statusbar{gap:4px 8px;padding-inline:8px}
  .book-reader__pan-hint{display:none}
  .book-reader__dialog{width:calc(100% - 16px);max-height:calc(100dvh - 16px);padding:16px}
  .book-reader__answer-source{grid-template-columns:minmax(0,1fr);padding:12px}
  .book-reader__answer-page{max-width:140px}
  .book-reader__dialog-actions .book-reader__button{white-space:normal}
  .book-reader--question-open .book-reader__workspace,.book-reader--question-open.book-reader--navigation-open .book-reader__workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,3fr) minmax(0,2fr)}
  .book-reader__gpt-panel{border-left:0;border-top:1px solid var(--book-border)}
}