.nb-home-card{display:flex;gap:24px;align-items:center;background:linear-gradient(120deg,#eef8f6,#fff);border:1px solid #b7d9d2;border-radius:18px;padding:28px;margin:26px 0}.nb-home-card h2{margin:4px 0;font-size:24px}.nb-home-card p{margin:8px 0}.nb-home-card .button{margin-left:auto;flex-shrink:0}.nb-home-icon{font-size:44px;color:#087e80}.nb-study-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(290px,360px);gap:18px;align-items:start}.nb-study-layout #pdf-reading-area{min-width:0}.nb-lesson-panel{background:#fff;border:1px solid #d2e0e2;border-radius:14px;padding:18px;max-height:calc(100vh - 110px);overflow:auto;position:sticky;top:90px}.nb-panel-heading{display:flex;align-items:center;gap:8px;justify-content:space-between}.nb-panel-heading h2{font-size:20px;margin:0}.nb-panel-heading a{font-size:13px}.nb-reader-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:12px;background:#eaf4f3;border-block:1px solid #cddfdf}.nb-reader-tools .button{font-size:13px;padding:8px 10px}.nb-palette{display:inline-flex;gap:7px;align-items:center}.nb-swatch{background:var(--swatch)!important;border:2px solid transparent!important;width:25px;height:25px;min-height:0!important;border-radius:50%;padding:0!important;box-shadow:0 0 0 1px #9caeb2;cursor:pointer}.nb-swatch[aria-pressed=true]{border-color:#173744!important;box-shadow:0 0 0 2px white,0 0 0 3px #173744}.nb-format{display:flex;gap:5px;flex-wrap:wrap;align-items:center}.nb-format button,.nb-note button,.nb-group-move button{background:#f4f7f8;color:#27434c;border:1px solid #d8e3e4;border-radius:5px;padding:5px 8px;font:inherit;font-size:12px;cursor:pointer}.nb-format select,.nb-book-actions select,.nb-image-tools select{max-width:100%;font:inherit;font-size:12px;border:1px solid #ccd9dc;padding:6px;border-radius:5px;background:white;color:#183342}.nb-ink{display:flex;gap:4px;align-items:center;font-weight:bold;font-size:14px}.nb-ink input{width:24px;height:24px;padding:0;border:0;background:transparent}.nb-panel-actions{display:flex;gap:8px;margin:14px 0}.nb-panel-actions .button{padding:8px;font-size:12px}.nb-status{font-size:12px;color:#40706a;margin-top:10px}.nb-status.is-error{color:#9c352c}.nb-note{border:1px solid #d9e4e6;border-left:4px solid var(--note-color);border-radius:7px;padding:12px;margin:12px 0;background:#fff;break-inside:avoid}.nb-note.is-selected{outline:2px solid #198b88}.nb-note-head{display:flex;justify-content:space-between;gap:12px;margin-bottom:10px}.nb-note-head small{font-size:10px;color:#678087;line-height:1.5}.nb-drag{cursor:grab;color:#5c787e;font-size:24px;line-height:1;padding:2px 8px}.nb-editor{font-size:16px;line-height:1.6;min-height:30px;white-space:pre-wrap;overflow-wrap:anywhere;outline:none}.nb-editor:empty:before{content:'Écris aici…';content:'Scrie aici…';color:#96a6ad;pointer-events:none}.nb-editor:focus,[data-nb-title]:focus{outline:1px dashed #7baea7;outline-offset:4px}.nb-editor p,.nb-editor div{margin:0 0 6px}.nb-editor h2{font-size:22px;margin:8px 0}.nb-editor h3{font-size:18px;margin:8px 0}.nb-note-controls{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:14px;border-top:1px solid #edf0f1;padding-top:10px}.nb-note-controls label{font-size:11px;display:flex;align-items:center;gap:5px}.nb-note-controls input{accent-color:#087e80}.nb-note-controls .nb-swatch{width:19px;height:19px}.nb-note .nb-delete{color:#963e33}.nb-note-footer{display:flex;gap:10px;margin-top:7px}.nb-note-footer button{border:none;background:transparent;padding:2px;color:#087e80;font-size:11px}.nb-image{margin-top:8px;margin-bottom:8px;max-width:100%}.nb-image img{width:100%;height:auto;display:block}.nb-image-tools{display:flex;gap:12px;align-items:center;font-size:11px}.nb-image-tools label{display:flex;gap:6px;align-items:center}.nb-image-tools input{width:100px;accent-color:#087e80}.nb-empty{padding:30px 12px;color:#6b828a;text-align:center;border:1px dashed #cbdcdd;border-radius:8px;font-size:14px}.nb-book-heading{display:flex;gap:20px;align-items:center;justify-content:space-between}.nb-book-heading h1{margin:5px 0;font-size:34px}.nb-book-toolbar{position:sticky;top:75px;z-index:30;background:#fff;border:1px solid #cfdfdf;box-shadow:0 4px 14px #1737440c;border-radius:12px;padding:14px;margin:18px 0}.nb-book-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;border-top:1px solid #e7eeee;padding-top:10px;margin-top:10px}.nb-book-actions label{font-size:12px;display:flex;align-items:center;gap:8px}.nb-book-actions select{width:200px}.nb-book-actions .button{font-size:12px;padding:8px 10px}.nb-book-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px;align-items:start}.nb-toc{position:sticky;top:260px;background:#fff;border:1px solid #d8e4e4;border-radius:10px;padding:16px;max-height:calc(100vh - 285px);overflow:auto}.nb-toc h2{font-size:18px;margin:0 0 14px}.nb-toc b{font-size:12px;display:block;margin:14px 0 6px}.nb-toc button{display:block;border:0;background:transparent;color:#4b6b76;font-size:12px;line-height:1.5;padding:7px 0;text-align:left;cursor:pointer;width:100%}.nb-toc small{color:#087e80}.nb-paper-stack{padding:24px;background:#e3e9ed;border-radius:12px;min-width:0}.nb-page{box-sizing:border-box;position:relative;width:210mm;max-width:100%;min-height:297mm;padding:18mm;margin:0 auto 24px;background:#fff;box-shadow:0 4px 16px #15394b1a;color:#183342}.nb-page:last-child{margin-bottom:0}.nb-paper-content{min-width:0}.nb-page-number{position:absolute;bottom:8mm;left:0;right:0;text-align:center;font-size:10px;color:#8a9ca4}.nb-document-title{font-size:28px!important;line-height:1.3;margin:0 0 26px!important}.nb-norm-heading,.nb-chapter-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;scroll-margin-top:280px}.nb-norm-heading{margin-top:22px;border-bottom:2px solid #087e80}.nb-norm-heading h2{font-size:20px;line-height:1.4;margin:0 0 10px}.nb-chapter-heading h3{font-size:17px;line-height:1.4;margin:18px 0 8px}.nb-group-move{display:flex;gap:4px;opacity:.45}.nb-group-move:hover{opacity:1}.nb-page .nb-note{padding:10px;margin:12px 0}.nb-page .nb-note-head small{font-size:10px}.nb-page .nb-editor{font-size:16px}.is-dragging{opacity:.4}.nb-drop-target{box-shadow:0 -4px 0 #087e80}.notebook-mode main{max-width:1300px}.nb-study-layout .pdf-frame{height:calc(100vh - 190px);min-height:650px}#pdf-reading-area:fullscreen{display:flex;flex-direction:column;background:#fff}#pdf-reading-area:fullscreen .pdf-frame{flex:1;min-height:0;height:auto}#nb-export-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}#nb-export-links:empty{display:none}
@media(max-width:1100px){.nb-study-layout{grid-template-columns:minmax(0,1fr) 310px}.nb-book-layout{grid-template-columns:160px minmax(0,1fr)}.nb-page{padding:5.5%;min-height:calc((100vw - 285px)*1.414)}.nb-paper-stack{padding:16px}.nb-toc{padding:12px}}
@media(max-width:800px){.nb-study-layout,.nb-book-layout{grid-template-columns:1fr}.nb-lesson-panel{position:static;max-height:none}.nb-toc{position:static;max-height:180px}.nb-home-card{flex-wrap:wrap;padding:20px}.nb-home-icon{display:none}.nb-home-card .button{margin-left:0}.nb-home-card h2{font-size:22px}.nb-book-toolbar{top:0;position:static}.nb-book-heading{align-items:flex-start;flex-direction:column}.nb-paper-stack{padding:10px}.nb-page{min-height:calc((100vw - 70px)*1.414);padding:7%;}.nb-document-title{font-size:23px!important}.nb-norm-heading h2{font-size:18px}.nb-book-actions label{width:100%}.nb-book-actions select{flex:1;min-width:0}.nb-study-layout .pdf-frame{min-height:550px}.nb-note-controls{gap:7px}.nb-book-toolbar .nb-format{gap:4px}.nb-chapter-heading{scroll-margin-top:310px}}
@media print{body.notebook-mode>header,body.notebook-mode>footer,.nb-book-heading,.nb-book-toolbar,.crumb,.nb-toc,.nb-note-controls,.nb-note-footer,.nb-image-tools,.nb-drag,.nb-group-move{display:none!important}.notebook-mode main{padding:0;margin:0;max-width:none}.nb-book-layout{display:block}.nb-paper-stack{padding:0;background:white}.nb-page{width:210mm;max-width:none;min-height:297mm;box-shadow:none;border:0;margin:0;break-after:page;padding:18mm}.nb-note{border:0;padding:0}.nb-note-head small{color:#555}.nb-page-number{display:none}@page{size:A4;margin:0}}
.quick-nav{position:fixed;right:16px;top:12px;z-index:110;display:flex;gap:5px;background:#fff;border:1px solid #d3dfe2;border-radius:9px;padding:4px;box-shadow:0 2px 8px #18334212}.quick-nav button,.quick-nav a{font:600 12px system-ui;border:0;background:#fff;padding:7px 9px;border-radius:5px;color:#183342;cursor:pointer;text-decoration:none}.quick-nav button:hover,.quick-nav a:hover{background:#eaf4f3}.home-shortcuts .card{display:block}.home-tool-icon{display:block;font-size:30px;color:#087e80;margin-bottom:12px}.home-shortcuts h2{font-size:22px}.nb-book-toolbar{top:0;margin-top:0;border-top-left-radius:0;border-top-right-radius:0;padding-right:170px}.nb-selected-tools{margin-top:8px;font-size:12px}.nb-selected-tools summary{cursor:pointer;color:#087e80}.nb-selected-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:10px 0}.nb-selected-actions button,.nb-selected-actions select{font:inherit;padding:5px 8px;background:#f4f7f8;border:1px solid #d8e3e4;border-radius:5px}.nb-selected-actions label{display:flex;gap:6px;align-items:center}.nb-selected-actions input[type=range]{width:110px}.nb-page-brand{display:flex;align-items:center;gap:10px;border-bottom:1px solid #dae4e6;padding-bottom:12px;margin-bottom:18px;font-size:13px;letter-spacing:.5px}.nb-page-brand span{background:#f4c451;color:#183342;border-radius:4px;padding:5px 7px;font-size:18px;font-weight:800;letter-spacing:0}.nb-page-brand small{margin-left:auto;font-size:10px;color:#788c94;letter-spacing:0}.nb-source-reference{display:block;color:#73878d;font-size:10px;margin-top:10px;line-height:1.4}.notebook-mode .nb-note:has(.nb-editor:empty) .nb-editor:before{content:''}.notebook-mode .nb-note:has(.nb-editor:empty) .nb-editor{min-height:0}.notebook-mode .nb-note{padding:13px}.notebook-mode .nb-note .nb-editor{cursor:text}.nb-book-layout{align-items:start}
@media(max-width:800px){.nb-book-toolbar{position:sticky;top:0;padding-right:14px;padding-top:53px}.nb-book-heading{padding-top:24px}.quick-nav{right:10px;top:8px}.nb-page-brand{font-size:11px;gap:8px}.nb-page-brand small{display:none}.nb-selected-actions{max-height:130px;overflow:auto}.nb-book-layout{display:block}.nb-toc{margin-bottom:16px}}
@media print{.quick-nav,#nb-selection-tools{display:none!important}.notebook-mode .nb-page-brand{display:flex!important}.nb-page-brand{color:#183342}.nb-page-brand span{print-color-adjust:exact;-webkit-print-color-adjust:exact}}

/* Notebook layout: rows are pagination units, controls remain outside the paper. */
.nb-row{display:flex;gap:14px;align-items:flex-start;break-inside:avoid;min-width:0}.nb-cell{min-width:0;box-sizing:border-box}.nb-cell .nb-note{width:100%;box-sizing:border-box}.nb-selected-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.nb-selected-actions label{display:flex;align-items:center;gap:5px;font-size:12px}.nb-selected-actions select,.nb-selected-actions button{font:inherit;font-size:12px;border:1px solid #ccd9dc;border-radius:5px;padding:6px;background:#f4f7f8;color:#183342}.nb-row .nb-image{max-width:100%}
@media(max-width:600px){.nb-row{gap:8px}.nb-cell .nb-note{padding:6px}.nb-cell .nb-editor{font-size:13px}.nb-selected-actions{gap:6px}}

/* One reading bar; the detailed editor scrolls independently in the left rail. */
.nb-compact-toolbar{padding:6px 170px 6px 10px!important;min-height:46px;box-sizing:border-box;margin-bottom:14px}.nb-compact-actions{display:flex;align-items:center;gap:7px;overflow-x:auto;white-space:nowrap}.nb-compact-actions .button{font-size:12px;padding:7px 10px;flex-shrink:0;min-height:32px}.nb-save-indicator{color:#577977;font-size:11px;margin-left:auto}.nb-tools-drawer[hidden]{display:none!important}.nb-tools-drawer{position:fixed;top:54px;left:max(16px,calc((100vw - 1300px)/2 + 16px));width:240px;max-height:calc(100dvh - 70px);background:white;border:1px solid #cbdcde;box-shadow:0 6px 26px #18334224;border-radius:12px;display:flex;flex-direction:column;z-index:65;overflow:hidden}.nb-drawer-heading{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid #e3ecec;flex-shrink:0;font-size:14px}.nb-drawer-heading .button{padding:3px 9px;font-size:14px;min-height:28px}.nb-drawer-scroll{overflow-y:auto;overscroll-behavior:contain;padding:0 12px 14px}.nb-drawer-scroll h2{font-size:13px;margin:18px 0 9px;color:#087e80}.nb-drawer-scroll .nb-format{gap:6px}.nb-drawer-scroll .nb-selected-actions{max-height:none;overflow:visible;align-items:flex-start;flex-direction:column;gap:8px}.nb-drawer-scroll .nb-selected-actions label{flex-wrap:wrap;width:100%}.nb-drawer-scroll .nb-book-actions{border:0;padding:0;margin:0;gap:8px}.nb-drawer-scroll .nb-book-actions label{flex-direction:column;align-items:flex-start;width:100%}.nb-drawer-scroll .nb-book-actions select{width:100%}.nb-drawer-scroll .nb-selected-tools summary{display:none}.nb-drawer-scroll .nb-selected-tools{margin:0}.notebook-mode .nb-toc{top:62px;max-height:calc(100dvh - 78px)}.notebook-mode .nb-note,.notebook-mode .nb-chapter-heading,.notebook-mode .nb-norm-heading{scroll-margin-top:64px}
@media(max-width:800px){.nb-compact-toolbar{padding:5px 8px!important}.notebook-mode .quick-nav{top:auto;bottom:12px}.nb-save-indicator{display:none}.nb-tools-drawer{left:10px;top:48px;width:min(280px,calc(100vw - 20px));max-height:calc(100dvh - 110px)}.notebook-mode .nb-toc{position:relative;top:0;max-height:160px;overflow:auto}}
@media print{.nb-tools-drawer,.nb-compact-toolbar{display:none!important}}

/* Reserved side rail: no editor controls float over the notebook or contents. */
.notebook-mode .quick-nav{position:static;justify-content:flex-end;width:max-content;margin:8px 16px 0 auto;box-shadow:none}.nb-compact-toolbar{position:static!important;padding:8px 10px!important;border-radius:10px;margin-bottom:14px}.nb-side-rail{position:sticky;top:12px;min-width:0;max-height:calc(100dvh - 24px);display:flex;flex-direction:column;gap:12px}.notebook-mode .nb-side-rail .nb-toc{position:static;margin:0;top:auto;min-height:120px;max-height:calc(100dvh - 24px);overflow:auto;flex:0 1 auto}.notebook-mode .nb-side-rail.tools-open .nb-toc{max-height:180px;flex-shrink:0}.nb-side-rail .nb-tools-drawer{position:relative;top:auto;left:auto;width:100%;max-height:none;min-height:180px;flex:1 1 auto;box-sizing:border-box;box-shadow:none;z-index:auto}.nb-side-rail .nb-drawer-scroll{min-height:0;flex:1 1 auto}.nb-side-rail .nb-drawer-heading{padding:8px 10px}.nb-side-rail .nb-selected-actions{gap:6px}.nb-side-rail .nb-selected-actions>button{width:100%;text-align:left}.nb-side-rail .nb-book-actions{flex-direction:column;align-items:stretch}.nb-compact-actions{scrollbar-width:none}.nb-compact-actions::-webkit-scrollbar{display:none}.nb-book-layout{grid-template-columns:240px minmax(0,1fr);gap:20px}
@media(max-width:800px){.nb-side-rail{position:static;max-height:none;margin-bottom:14px}.notebook-mode .nb-side-rail .nb-toc{max-height:160px;min-height:0}.nb-side-rail .nb-tools-drawer{max-height:360px;min-height:0;flex:none}.notebook-mode .nb-side-rail.tools-open .nb-toc{max-height:160px}.nb-compact-toolbar{padding:6px!important}.nb-compact-actions{gap:5px}.nb-compact-actions .button{padding:6px 8px}.nb-book-layout{display:block}}
@media print{.nb-side-rail{display:none!important}}

/* A dedicated navigator switches between contents and editing; reading zoom never changes export. */
.nb-zoom{display:flex;gap:4px;align-items:center;flex-shrink:0}.nb-zoom button,.nb-zoom select,.nb-rail-tabs button,.nb-toc-actions button{font:inherit;font-size:12px;padding:6px 8px;border:1px solid #cbdcde;border-radius:6px;background:white;color:#183342;cursor:pointer}.nb-lesson-panel>.nb-zoom{margin-bottom:12px}.nb-rail-tabs{display:flex;gap:6px;flex-shrink:0}.nb-rail-tabs button{flex:1}.nb-rail-tabs [aria-pressed=true]{background:#087e80;color:white}.nb-book-layout{grid-template-columns:280px minmax(0,1fr)}.nb-book-layout.nav-hidden{grid-template-columns:minmax(0,1fr)}.nb-side-rail[hidden],.nb-toc[hidden]{display:none!important}.notebook-mode .nb-side-rail .nb-toc{max-height:none;min-height:0;flex:1 1 auto;padding:12px}.notebook-mode .nb-side-rail.tools-open .nb-toc{display:none}.nb-side-rail .nb-tools-drawer{min-height:0}.nb-toc-actions{display:flex;gap:6px;margin-top:8px}.nb-toc-tree details{margin:8px 0}.nb-toc-tree summary{cursor:pointer;font-size:13px;line-height:1.5;font-weight:600}.nb-toc-tree summary small{font-weight:400;color:#71868c;font-size:10px}.nb-toc-tree .nb-toc-lesson{border-left:2px solid #dce8e7;padding-left:9px;margin-left:6px}.nb-toc-tree [data-nb-note-goto]{font-size:11px;border-bottom:1px solid #edf1f1;padding:8px 0}.nb-paper-stack{overflow-x:auto}.nb-paper-stack .nb-page{width:var(--nb-page-view-width,210mm);max-width:none}.nb-side-rail{height:calc(100dvh - 24px)}.nb-save-indicator{display:none}
@media(max-width:800px){.nb-book-layout{display:block}.nb-side-rail{height:auto;max-height:none}.notebook-mode .nb-side-rail .nb-toc{max-height:280px}.nb-side-rail .nb-tools-drawer{max-height:360px}.nb-compact-actions{flex-wrap:wrap;white-space:normal;gap:6px}.nb-paper-stack{padding:12px}.nb-page{padding:10mm}}
@media print{.nb-page{zoom:1!important;width:210mm!important}.nb-zoom,.nb-rail-tabs{display:none!important}}