/* Shared CODEBOOKUSA design: navy navigation, quiet paper surfaces, red active rules. */
:root{--navy:#002868;--red:#bf0a30;--bg:#f5f5f4;--radius:8px}body{line-height:1.55}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #438fee!important;outline-offset:3px}button,a,input,textarea,select{touch-action:manipulation}a{text-decoration:none}button{font:inherit}.hidden{display:none!important}
#storeView>.header{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:78px;padding:0 3%;background:#001a40;color:white;position:relative;border-bottom:1px solid #ffffff22}#storeView>.header .header-bar{display:contents}.header .brand-sm{font-size:clamp(1.3rem,2.3vw,2rem);letter-spacing:-.055em;white-space:nowrap;order:1}.header .brand-code,.header .brand-usa-sm{color:white}.header .brand-book{color:#bf0a30}.header .tabs{order:2;gap:22px;align-self:stretch}.header .tab{color:white;white-space:nowrap;padding:0 10px;height:auto;min-height:74px;flex:none;font-size:.9375rem;font-weight:600;border-bottom-width:3px}.header .tab.active{color:white;border-bottom-color:#ef183e}.header .header-right{order:3;gap:15px}.header .icon-btn,.header .theme-toggle{color:white}.header .avatar-btn{background:#edf1f7;color:#002868}.header .theme-toggle{border-color:#ffffff40}.header #cartBtn{display:none}
.catalog-intro{max-width:1456px;margin:0 auto;padding:30px 40px 35px}.catalog-breadcrumb{color:var(--muted);font-size:.875rem;margin-bottom:22px}.catalog-breadcrumb a{color:var(--muted);font-weight:400;margin-right:14px}.catalog-heading{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.catalog-heading h1{font-size:clamp(2rem,3.6vw,3.5rem);line-height:1.15;letter-spacing:-.055em;font-weight:800}.catalog-heading p{font-size:1.1rem;color:var(--muted);margin-top:12px}.catalog-heading .search-wrap{margin:0}.catalog-heading .search{height:70px;padding-left:58px;background:var(--card);font-size:1rem;border:1px solid #cfcac7}.catalog-heading .search-ico{left:22px;width:23px;height:23px;stroke:var(--muted)}
.catalog-layout{display:grid;grid-template-columns:235px minmax(0,1fr);gap:45px;max-width:1456px;margin:0 auto;padding:10px 40px 60px}.catalog-sidebar{border-right:1px solid var(--border);padding-right:34px}.catalog-sidebar h2{text-transform:uppercase;color:var(--navy);font-size:.8125rem;font-weight:700;margin-bottom:15px}.catalog-sidebar .filters{display:flex;flex-direction:column;gap:2px;background:transparent;padding:0;border:0;overflow:visible}.catalog-sidebar .filter{background:transparent;border:0;color:var(--text);height:auto;min-height:40px;padding:8px 0;border-radius:0;text-align:left;font-size:.9375rem;font-weight:400;display:flex;align-items:center;gap:14px}.catalog-sidebar .filter:before{content:"";display:block;width:17px;height:17px;border:1px solid #a8a29e;background:var(--card);border-radius:2px}.catalog-sidebar .filter.active:before{background:var(--navy);border-color:var(--navy);box-shadow:inset 0 0 0 3px var(--card)}.catalog-sidebar .filter.active{font-weight:600;color:var(--navy)}.publisher-filter{border-top:1px solid var(--border);padding-top:24px;margin-top:24px}.publisher-filter label{display:flex;align-items:center;gap:12px;min-height:40px;font-size:.9375rem;cursor:pointer}.publisher-filter input{width:17px;height:17px;accent-color:var(--navy)}.clear-filters{background:none;border:0;color:var(--navy);font-size:.875rem;text-decoration:underline;padding:15px 0;margin-top:15px}.catalog-results-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:38px;margin-bottom:22px}.catalog-results-bar h2{font-size:1.25rem;letter-spacing:-.025em}.catalog-results-bar h2 span{font-size:.8125rem;color:var(--muted);font-weight:400;margin-left:5px}.catalog-results-bar label{font-size:.875rem;display:flex;align-items:center;gap:10px}.catalog-results-bar select{background:var(--card);color:var(--text);border:1px solid #cfcac7;padding:8px 12px;border-radius:5px;font:inherit}.catalog-results .book-grid{grid-template-columns:repeat(3,minmax(0,1fr));padding:0;gap:22px}.catalog-results .book-card{box-shadow:none;border:1px solid #d5d0cb;border-radius:7px;background:var(--card);transition:border-color .18s,transform .18s}.catalog-results .book-card:hover{border-color:#8c9eb7;transform:translateY(-3px)}.catalog-book-link{display:block;color:var(--text);font-weight:400;height:100%}.catalog-results .book-cover{aspect-ratio:1.75;min-height:180px;background:linear-gradient(120deg,#ece8e5,#f3f1ef);padding:15px 22px;display:flex;align-items:center;justify-content:center}.catalog-results .cover-img{width:auto;max-width:62%;height:100%;max-height:168px;object-fit:contain;filter:drop-shadow(5px 7px 6px #001a4028)}.catalog-results .cover-art{width:112px;height:154px;box-shadow:5px 5px 8px #001a4025;border-left:4px solid #ffffff28;padding:12px}.catalog-results .cover-title{font-size:22px}.catalog-results .cover-year{font-size:26px}.catalog-results .cover-publisher{font-size:10px;letter-spacing:1px}.catalog-results .cover-bottom-label{font-size:9px}.catalog-results .book-info{padding:16px}.book-category{text-transform:uppercase;font-size:.75rem;color:var(--navy);font-weight:700;margin-bottom:4px;letter-spacing:.02em}.catalog-results .book-title{font-size:1.15rem;font-weight:700;line-height:1.3;min-height:0;margin:0 0 3px}.catalog-results .book-edition{font-size:.875rem;margin:0;color:var(--muted)}.book-view-link{display:flex;justify-content:space-between;border-top:1px solid var(--border);margin-top:14px;padding-top:10px;font-size:.9375rem;font-weight:600;color:var(--navy)}.catalog-status{font-size:.8125rem;color:var(--muted);margin:18px 0 0}.catalog-results .empty-state{grid-column:1/-1;padding:65px 20px}.empty-state .btn{margin-top:20px}
.detail-view{background:var(--bg)}.detail-header{padding:15px 4%;background:#001a40;color:white}.detail-header .back-btn{color:white}.detail-body{max-width:1100px;margin:auto;display:grid;grid-template-columns:320px 1fr;gap:32px;padding:50px 35px}.detail-cover-wrap{grid-row:1/3;padding:35px;display:flex;align-items:flex-start;justify-content:center;border:1px solid var(--border);border-radius:8px;background:var(--card)}.detail-cover{max-width:220px;height:310px;width:100%}.detail-cover .cover-img{object-fit:contain}.detail-meta{padding:0}.detail-title{font-size:2.1rem;letter-spacing:-.045em;line-height:1.2;margin:6px 0 12px}.detail-subtitle{color:var(--muted);font-size:1rem}.licensing-status{padding:18px;margin:24px 0;border-left:3px solid var(--red);background:var(--card);border-radius:0 6px 6px 0}.licensing-status strong{font-size:.9375rem}.licensing-status p{font-size:.875rem;line-height:1.6;color:var(--muted);margin-top:6px}.detail-preview-btn{font-size:.9375rem;width:auto;padding:12px 22px;background:var(--navy);border:0;color:white}.publisher-inquiry{display:block;font-size:.875rem;margin-top:17px}.detail-section,.detail-specs{padding:0}.detail-specs{grid-column:2}.detail-section p{font-size:1rem}.home-feed-inner{max-width:1140px}.study-view{max-width:980px;margin:30px auto}.study-section-title{font-size:1.25rem}.auth-page{background:var(--bg)}.auth-box{padding:35px;border:1px solid var(--border);border-radius:10px;background:var(--card);width:min(480px,calc(100% - 32px))}.auth-title{font-size:2rem;letter-spacing:-.04em}.auth-box .field{background:var(--bg)}.btn-apple{display:none}.home .flag-badge{display:none}.book-grid#libraryGrid{max-width:1120px;margin:30px auto}.toast{z-index:1000}
[data-theme="dark"] .catalog-results .book-cover{background:linear-gradient(120deg,#20252e,#2b303a)}[data-theme="dark"] .catalog-results .book-card{border-color:var(--border)}[data-theme="dark"] .catalog-heading .search,[data-theme="dark"] .catalog-results-bar select{border-color:var(--border)}
@media(max-width:1100px){.header .tabs{gap:4px}.header .tab{padding:0 7px;font-size:.875rem}.header .header-right{gap:8px}.catalog-layout{grid-template-columns:175px minmax(0,1fr);gap:25px;padding-inline:25px}.catalog-sidebar{padding-right:20px}.catalog-results .book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-intro{padding-inline:25px}.catalog-heading{gap:25px}.catalog-heading h1{font-size:2.65rem}}
@media(max-width:740px){#storeView>.header{flex-wrap:wrap;padding:16px 20px 0;gap:8px 15px}.header .brand-sm{font-size:1.5rem}.header .tabs{order:4;width:100%;justify-content:space-between;gap:0}.header .tab{min-height:48px;padding:0 5px;font-size:.875rem}.header .header-right{margin-left:auto}.catalog-intro{padding:22px 20px}.catalog-breadcrumb{margin-bottom:17px}.catalog-heading{grid-template-columns:1fr;gap:22px}.catalog-heading h1{font-size:2.3rem}.catalog-heading p{font-size:1rem}.catalog-heading .search{height:54px;padding-left:46px;font-size:.9375rem}.catalog-heading .search-ico{left:15px}.catalog-layout{display:block;padding:0 20px 35px}.catalog-sidebar{border:0;padding:0;margin-bottom:23px}.catalog-sidebar h2{margin-bottom:10px}.catalog-sidebar .filters{flex-direction:row;overflow:auto;gap:20px}.catalog-sidebar .filter{min-height:42px;font-size:.875rem}.catalog-sidebar .filter:before{display:none}.catalog-sidebar .filter.active{border-bottom:2px solid var(--red)}.publisher-filter{display:flex;flex-wrap:wrap;gap:6px 18px;padding-top:15px;margin-top:10px}.publisher-filter h2{width:100%;margin-bottom:0}.publisher-filter label{font-size:.8125rem;min-height:36px}.clear-filters{padding:6px 0;margin-top:7px;font-size:.8125rem}.catalog-results-bar{margin-bottom:16px}.catalog-results-bar h2{font-size:1.1rem}.catalog-results-bar select{padding:6px;font-size:.8125rem;max-width:135px}.catalog-results .book-grid{gap:12px}.catalog-results .book-cover{min-height:150px;aspect-ratio:1.25;padding:14px}.catalog-results .cover-img{max-width:90%;max-height:137px}.catalog-results .cover-art{width:88px;height:125px}.catalog-results .cover-title{font-size:18px}.catalog-results .cover-year{font-size:23px}.catalog-results .book-info{padding:12px}.catalog-results .book-title{font-size:1rem}.catalog-results .book-edition{font-size:.75rem}.book-view-link{font-size:.875rem}.detail-body{display:flex;flex-direction:column;padding:25px 20px;gap:25px}.detail-cover-wrap{padding:22px}.detail-cover{height:230px;max-width:165px}.detail-title{font-size:1.8rem}.study-view{margin:15px auto}.auth-box{padding:25px}.detail-section p{font-size:.9375rem}}
/* The reader uses a native modal dialog for keyboard focus and background isolation. */
.modern-reader-header{grid-row:1}.modern-reader-toolbar{grid-row:2}.reader-status{grid-row:3}.modern-reader-layout{grid-row:4}.modern-reader-footer{grid-row:5}
#codebookReader{border:0;margin:0;padding:0;width:100vw;height:100dvh;max-width:none;max-height:none;background:var(--card);color:var(--text);overflow:hidden}#codebookReader[open]{display:grid;grid-template-rows:78px 70px auto minmax(0,1fr) 70px}#codebookReader::backdrop{background:#001a40}.modern-reader-header{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;gap:20px;padding:0 28px;background:#00204f;color:white}.reader-wordmark{font-size:1.8rem;font-weight:900;letter-spacing:-.055em;color:white;white-space:nowrap}.reader-wordmark span{color:#bf0a30}.modern-reader-header strong{text-align:center;font-size:1.25rem}.modern-reader-header button{justify-self:end;border:0;background:none;color:white;font-size:.9375rem;display:flex;gap:20px;align-items:center}.modern-reader-header button span{font-size:1.7rem}.modern-reader-toolbar{display:flex;align-items:center;gap:25px;padding:12px 28px;border-bottom:1px solid var(--border);background:var(--card)}.modern-reader-toolbar>button{display:none}.reader-search-label{width:min(490px,45%);margin:auto}.reader-search-label input{width:100%;height:45px;padding:10px 18px;border:1px solid var(--border);border-radius:5px;background:var(--card);color:var(--text);font-size:.9375rem}.modern-reader-actions{display:flex;gap:0;align-items:center}.modern-reader-actions button{border:0;border-left:1px solid var(--border);background:none;color:var(--text);padding:4px 19px;min-height:38px;font-size:1.1rem;white-space:nowrap}.modern-reader-actions span{font-size:.875rem;margin-left:6px}.modern-reader-actions button[aria-pressed="true"]{color:var(--navy);background:#e5ecf6}.reader-status{font-size:.8125rem;color:var(--navy);background:var(--bg);padding:0 25px;line-height:2}.reader-status:empty{display:none}.modern-reader-layout{display:grid;grid-template-columns:250px minmax(0,1fr) 290px;overflow:hidden;min-height:0}.modern-reader-outline{padding:30px 20px;background:var(--bg);border-right:1px solid var(--border);overflow:auto}.modern-reader-outline h2{font-size:1.1rem;margin:0 0 30px}.outline-parent{font-size:.875rem;font-weight:700;color:var(--navy);margin-bottom:18px}.modern-reader-outline nav{display:flex;flex-direction:column;gap:4px}.modern-reader-outline nav button{width:100%;text-align:left;padding:14px 15px;border:0;border-left:3px solid transparent;background:transparent;color:var(--text);font-size:.875rem}.modern-reader-outline nav button[aria-current]{background:#e7ecf3;color:#002868;border-left-color:#bf0a30;font-weight:600}.modern-reading-page{padding:40px clamp(26px,4vw,65px);overflow:auto;min-width:0}.reader-eyebrow{font-size:.8125rem;font-weight:600;color:var(--red);text-transform:uppercase;margin-bottom:14px}.modern-reading-page h1{font-family:Georgia,serif;font-size:clamp(2rem,3.2vw,3.25rem);font-weight:700;letter-spacing:-.035em;line-height:1.15;margin:0 0 14px}.reading-edition{font-size:.875rem;color:var(--muted);margin-bottom:35px}#modernReadingBody{font:19px/1.6 Georgia,'Times New Roman',serif}#modernReadingBody h2{font-size:1.3em;line-height:1.3;margin:28px 0 10px;letter-spacing:-.025em}#modernReadingBody h2:first-child{margin-top:0}#modernReadingBody p{margin:0 0 15px}.reading-callout{padding:24px;border:1px solid var(--border);border-radius:6px;margin:26px 0}.reading-callout h3{font-size:1.18em;margin-bottom:8px}.reading-callout p:last-child{margin-bottom:0!important}.reader-highlight{background:#fff0a4;color:#1c1917}.sample-footer{font-size:.8125rem;text-align:center;color:var(--muted);border-top:1px solid var(--border);padding-top:15px;margin-top:40px}.modern-reader-notes{border-left:1px solid var(--border);padding:30px 22px;overflow:auto}.modern-reader-notes>h2{font-size:1.1rem;margin:0 0 20px;letter-spacing:-.025em}.reader-note-tabs{display:flex;border-bottom:1px solid var(--border);gap:20px;margin-bottom:22px}.reader-note-tabs button{background:transparent;color:var(--muted);border:0;border-bottom:3px solid transparent;padding:7px 10px 13px;font-size:.875rem}.reader-note-tabs .active{color:var(--navy);border-bottom-color:var(--red);font-weight:600}.modern-note-card{padding:17px 15px;border:1px solid var(--border);border-radius:6px;margin-bottom:17px;border-top:3px solid #ffe899}.note-jump{background:none;border:0;font-size:.875rem;line-height:1.6;text-align:left;color:var(--text);padding:0;overflow-wrap:anywhere}.note-card-bottom{display:flex;justify-content:space-between;gap:8px;margin-top:12px;font-size:.75rem;color:var(--muted)}.note-card-bottom button{background:none;border:0;padding:0;color:var(--red);font-size:.75rem}.modern-notes-empty{font-size:.875rem;line-height:1.6;color:var(--muted);padding:15px 0 30px}#modernAddNote{width:100%;padding:12px;border:1px solid var(--navy);border-radius:5px;background:transparent;color:var(--navy);font-size:.9375rem;font-weight:600}#modernNoteForm{padding-top:18px}#modernNoteForm[hidden]{display:none}#modernNoteForm label{font-size:.8125rem;display:block;margin-bottom:6px}#modernNoteText{width:100%;border:1px solid var(--border);background:var(--bg);color:var(--text);padding:10px;font:inherit;resize:vertical;border-radius:5px}#modernNoteForm>div{display:flex;gap:10px;margin-top:10px}#modernNoteForm button{padding:8px 12px;border:1px solid var(--navy);background:var(--navy);color:white;font-size:.8125rem;border-radius:4px}#modernNoteForm #modernCancelNote{background:none;color:var(--navy)}.reader-storage-note{font-size:.75rem;color:var(--muted);margin-top:15px}.modern-reader-footer{display:flex;align-items:center;justify-content:space-between;padding:14px 40px;border-top:1px solid var(--border);gap:30px}.modern-reader-footer button{border:0;background:none;color:var(--navy);font-size:.9375rem;font-weight:600;min-height:40px}.modern-reader-footer button:disabled{opacity:.35;cursor:default}.modern-reader-footer label{display:flex;align-items:center;gap:25px;font-size:.8125rem;width:45%}.modern-reader-footer progress{accent-color:#bf0a30;height:6px;flex:1;width:100px;border:0}.modern-reader-footer progress::-webkit-progress-bar{background:var(--border);border-radius:5px}.modern-reader-footer progress::-webkit-progress-value{background:#bf0a30;border-radius:5px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1150px){.modern-reader-layout{grid-template-columns:200px minmax(0,1fr) 250px}.modern-reading-page{padding:30px}.modern-reader-notes{padding:25px 16px}.modern-reader-header{padding:0 20px}.reader-wordmark{font-size:1.5rem}.modern-reader-actions button{padding-inline:12px}.modern-reader-outline{padding:25px 14px}}
@media(max-width:900px){.modern-reader-layout{grid-template-columns:minmax(0,1fr) 245px}.modern-reader-outline{display:none}.show-contents .modern-reader-outline{display:block;position:absolute;top:140px;bottom:70px;left:0;z-index:2;width:245px;box-shadow:5px 0 15px #001a4022}.modern-reader-toolbar>button{display:block;border:1px solid var(--border);padding:8px;background:var(--card);color:var(--text);border-radius:4px;font-size:.8125rem}.modern-reader-toolbar{gap:12px;padding-inline:18px}.modern-reader-actions span{display:none}.reader-search-label{width:auto;flex:1}.modern-reader-actions button{padding:3px 10px}.modern-reader-header{grid-template-columns:1fr auto auto;gap:18px}.modern-reader-header strong{font-size:1rem}.modern-reader-header button{font-size:.8125rem;gap:10px}.modern-reader-footer label{width:50%;gap:12px}}
@media(max-width:600px){#codebookReader[open]{grid-template-rows:64px 62px auto minmax(0,1fr) 62px}.modern-reader-header{grid-template-columns:1fr auto;padding:0 16px}.reader-wordmark{font-size:1.3rem}.modern-reader-header strong{display:none}.modern-reader-header button{font-size:.8125rem}.modern-reader-layout{display:block;overflow:auto}.modern-reading-page{padding:28px 22px;overflow:visible}.modern-reading-page h1{font-size:2.2rem}.reading-edition{font-size:.8125rem;margin-bottom:28px}#modernReadingBody{font-size:18px}.modern-reader-notes{border-left:0;border-top:1px solid var(--border);padding:25px 22px}.modern-reader-toolbar{padding:8px 12px;gap:8px}.modern-reader-actions button{font-size:1rem;padding:3px 8px}.reader-search-label input{padding:8px;font-size:.8125rem}.modern-reader-footer{gap:10px;padding:10px 16px}.modern-reader-footer button{font-size:.8125rem;white-space:nowrap}.modern-reader-footer label{flex-direction:column;gap:6px;font-size:.75rem;width:40%}.modern-reader-footer progress{width:100%;flex:auto;height:5px}.show-contents .modern-reader-outline{top:126px;bottom:62px}.reader-status{font-size:.75rem;line-height:1.5;padding-inline:15px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}