.textbook-library [hidden]{display:none!important}
.textbook-library{min-height:100vh;caret-color:#304bd5;scrollbar-color:#7187ad #edf2fc}
.textbook-library ::selection{background:#dbe4ff;color:#20344b}
.library-main{max-width:1120px;margin:0 auto;padding:20px 32px 48px}
.textbook-library .hub-header{max-width:1120px;padding-inline:32px}
.textbook-library .student-bar{max-width:1120px;margin-inline:auto;padding-inline:32px}
.library-main h1{font-size:32px;line-height:1.3;margin:4px 0 10px}
.library-intro{color:#52657a;margin:0 0 28px;font-size:18px}
.library-choices{border:0;padding:0;margin:0 0 20px;min-width:0}
.library-choices legend{font-weight:700;font-size:16px;margin-bottom:8px}
.library-choices>div{display:flex;flex-wrap:wrap;gap:8px}
.library-main button,.library-button{font:inherit;font-weight:600;min-height:48px;padding:10px 16px;border:2px solid #b8c8df;border-radius:12px;color:#293e50;background:#fff;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.4}
.library-main button[aria-pressed=true],.library-primary{background:#304bd5;color:#fff;border-color:#304bd5}
.library-main button:hover,.library-button:hover{border-color:#304bd5}
.library-main button:disabled,.library-main button[aria-disabled=true],.library-button[aria-disabled=true]{opacity:.6;cursor:wait}
.library-main :is(a,button,input,select,summary):focus-visible{outline:3px solid #5574ec;outline-offset:3px}
.library-main a{text-underline-offset:4px}
.library-more{margin:16px 0 24px}.library-more>summary{min-height:48px;padding:12px 0;font-weight:600;cursor:pointer;color:#304bd5;list-style-position:inside}.library-refine{display:grid;grid-template-columns:1fr 1fr 1fr 2fr;gap:16px;margin:12px 0 20px}
.library-refine label{display:flex;flex-direction:column;gap:8px;font-weight:600;font-size:16px;min-width:0}
.library-refine input,.library-refine select{font:inherit;font-weight:400;width:100%;min-width:0;min-height:48px;border:2px solid #b8c8df;border-radius:10px;padding:10px;color:#293e50;background:#fff}
.library-refine input::placeholder{color:#52657a;opacity:1}
.library-result-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 10px}
.library-result-heading h2{font-size:22px;margin:0}
.library-result-heading button{background:transparent;font-size:15px}
#library-status{min-height:24px;margin:8px 0;color:#52657a}
.library-results{list-style:none;margin:0;padding:0;border-top:1px solid #b8c8df}
.library-row{display:grid;grid-template-columns:104px minmax(0,1fr) auto;gap:22px;padding:22px 0;border-bottom:1px solid #b8c8df;align-items:center}
.library-cover{width:104px;aspect-ratio:7/10;display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid #b8c8df;border-radius:4px;overflow:hidden;text-decoration:none;color:#52657a}
.library-cover img{display:block;width:100%;height:100%;object-fit:contain}
.library-cover span{padding:12px;font-size:14px;text-align:center;line-height:1.5}
.library-row .library-isbn,#library-book-isbn{font-variant-numeric:tabular-nums;overflow-wrap:anywhere;color:#293e50}
.library-book-heading{display:grid;grid-template-columns:124px minmax(0,1fr);gap:24px;align-items:center;margin:24px 0 16px}
.library-book-heading .library-cover{width:124px}.library-book-heading #library-book-title{margin:0 0 10px}
#library-book-isbn{margin:8px 0;font-size:16px}
.library-row h3{font-size:20px;line-height:1.5;margin:0 0 8px;overflow-wrap:anywhere}
.library-row h3 a{color:#20344b;text-decoration:none;display:inline-flex;align-items:center;min-height:48px}
.library-row h3 a:hover{text-decoration:underline}
.library-row p{margin:4px 0;color:#52657a;font-size:15px;line-height:1.6;overflow-wrap:anywhere}
.library-row .library-edition{font-weight:650;color:#293e50}
.library-row-actions{display:flex;gap:8px;flex-wrap:wrap}
.library-empty{padding:28px 0;font-size:18px;color:#52657a}
.library-source{margin-top:32px;color:#52657a;max-width:75ch;line-height:1.7}
.library-source summary{min-height:48px;padding:12px 0;cursor:pointer;font-weight:600;color:#293e50}
.library-source p{margin:8px 0 16px}.library-source a{color:#304bd5;display:inline-flex;align-items:center;min-height:48px}
#library-book-title{font-size:28px;line-height:1.5;margin:22px 0 12px;overflow-wrap:anywhere}
#library-book-meta{color:#52657a;line-height:1.7}
.library-file-actions{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}
#library-file-status{color:#52657a;min-height:24px}
.library-document-tip{color:#52657a;font-size:15px}
#library-pdf{display:block;width:100%;height:76vh;height:76svh;min-height:500px;border:1px solid #b8c8df;background:#fff;border-radius:12px}
@media(max-width:760px){.library-main{padding:16px 20px 40px}.library-refine{grid-template-columns:1fr 1fr}.library-search{grid-column:1/-1}.library-row{grid-template-columns:1fr;gap:12px}.library-row-actions{justify-content:flex-start}.library-main h1{font-size:28px}.library-result-heading{align-items:flex-start}.library-result-heading h2{font-size:20px;padding-top:12px}.library-choices>div{gap:8px}.library-main button,.library-button{padding:10px 14px}#library-book-title{font-size:24px}#library-pdf{min-height:420px}}
@media(max-width:760px){.textbook-library .hub-header{padding-inline:20px}.textbook-library .student-bar{padding-inline:20px}}
@media(max-width:760px){.library-row{grid-template-columns:80px minmax(0,1fr);gap:12px 16px;align-items:start}.library-row>.library-cover{width:80px;margin-top:6px}.library-row-actions{grid-column:2}.library-book-heading{grid-template-columns:88px minmax(0,1fr);gap:16px}.library-book-heading .library-cover{width:88px}.library-row h3{font-size:18px}.library-row h3 a{min-height:48px}.library-row-actions .library-button{padding:10px 12px}}
@media(max-width:359px){.library-row-actions{grid-column:1/-1}.library-book-heading{grid-template-columns:72px minmax(0,1fr)}.library-book-heading .library-cover{width:72px}}