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8px}.modal-subtitle{color:var(--text-muted);font-size:11pt;line-height:1.5;margin:0}.grades-container{margin-bottom:24px;max-height:350px;overflow-y:auto;padding-right:10px}.grades-container::-webkit-scrollbar{width:6px}.grades-container::-webkit-scrollbar-track{background:#0000}.grades-container::-webkit-scrollbar-thumb{background:var(--border2);border-radius:10px}.grade-group{margin-bottom:24px}.grade-group h4{border-bottom:1px solid var(--border);color:var(--text-main);font-size:11.5pt;margin:0 0 12px;padding-bottom:6px}.grade-pills{display:flex;flex-wrap:wrap;gap:10px}.grade-pill input[type=checkbox]{display:none}.grade-pill span{background:var(--bg-secondary);border:2px solid var(--border);border-radius:20px;color:var(--text-muted);cursor:pointer;display:inline-block;font-size:10.5pt;font-weight:600;padding:10px 18px;transition:all .2s ease;-webkit-user-select:none;user-select:none}.grade-pill:hover span{background:var(--bg-light);border-color:var(--border2)}.grade-pill 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ease}.btn-outline:hover{background:var(--bg-light);border-color:var(--border2);color:var(--text-main)}.ModalEditorHistory{align-items:center;background:#0f172a8c;display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:9999}.history-modal-container{animation:slideInUp .3s ease-out;background:var(--bg-secondary);border-radius:12px;box-shadow:var(--shadow-float);display:flex;flex-direction:column;height:80vh;max-height:700px;max-width:1000px;overflow:hidden;width:100%}@keyframes slideInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.history-modal-header{align-items:center;background:var(--primary-light);border-bottom:1px solid var(--border);color:var(--text-main);display:flex;gap:16px;justify-content:space-between;padding:22px 24px}.history-modal-header h2{font-size:24px;font-weight:700;line-height:1.2;margin:0}.history-modal-header .close-btn{background:var(--bg-secondary);border:1px solid 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20px 50px #0000004d;max-width:90%;padding:30px;position:relative;text-align:center;width:440px}.fs-warning-box h3{color:#0f172a;font-size:1.5rem;margin-top:0}.fs-warning-box p{color:#475569;font-size:.95rem;font-weight:500;line-height:1.5;margin-bottom:24px}@keyframes boomAnimation{0%{opacity:0;transform:scale(.3)}60%{opacity:1;transform:scale(1.1)}to{opacity:1;transform:scale(1)}}.fs-warning-box.boom{animation:boomAnimation .4s cubic-bezier(.175,.885,.32,1.275) forwards;border:4px solid #ef4444}.fs-warning-box.boom h3{color:#ef4444;font-size:1.6rem;text-transform:uppercase}.fs-warning-actions{display:flex;gap:12px;justify-content:center}.fs-btn{border:none;border-radius:8px;cursor:pointer;font-size:.9rem;font-weight:600;padding:10px 16px}.fs-btn-cancel{background:var(--primary);color:#fff;transition:.2s}.fs-btn-cancel:hover{background:#6d28d9}.fs-btn-confirm{background:#f1f5f9;color:#64748b;transition:.2s}.fs-btn-confirm:hover{background:#fee2e2;color:#ef4444}.fs-close-x{background:none;border:none;color:#94a3b8;cursor:pointer;font-size:1.5rem;font-weight:700;position:absolute;right:15px;top:10px;transition:.2s}.fs-close-x:hover{color:#475569;transform:scale(1.1)}.closed-screen{align-items:center;background:var(--bg-body);display:none;flex-direction:column;inset:0;justify-content:center;opacity:0;padding:40px;position:fixed;text-align:center;transition:opacity .3s;z-index:10000}.closed-screen.visible{display:flex;opacity:1}.closed-screen h1{color:#0f172a;font-size:2.5rem;margin-bottom:10px}.closed-screen p{color:#64748b;font-size:1.1rem;line-height:1.5;margin:5px 0;max-width:500px}.penalty-display{background:#fee2e2;border:1px solid #fecaca;border-radius:8px;color:#ef4444}.penalty-display,.score-display{display:none;font-size:1.25rem;font-weight:700;margin-top:20px;padding:10px 20px}.score-display{background:var(--primary-light);border:1px solid #d8b4fe;border-radius:8px;color:var(--primary)}.loading-container{color:#475569;font-size:1.1rem;font-weight:700;margin-top:40px}@keyframes ellipsis{0%{content:""}25%{content:"."}50%{content:".."}75%{content:"..."}to{content:""}}.loading-dots:after{animation:ellipsis 1.5s infinite;content:"";display:inline-block;text-align:left;width:24px}@media (max-width:820px){.main-stage{margin-top:60px;padding:0}.q-inner{padding:20px!important}.footer-nav{justify-content:center;padding:0}.footer-nav>.footer-content{scale:.75}.footer-buttons{flex-direction:column;gap:7px;scale:.6}}@media (max-width:440px){.top-bar{gap:12px;justify-content:center;padding:0 12px}}:lang(ar) .layout-split .media-source-link,:lang(ar) .layout-split .q-text,:lang(ar) .submit-warnings-container{text-align:right}.Chapter{background:var(--bg-body);display:flex;font-family:Inter,system-ui,sans-serif;height:calc(100vh - 70px);margin-top:70px;overflow:hidden}.Chapter *{box-sizing:border-box;transition:all .2s cubic-bezier(.25,.8,.25,1)}.Chapter.resizing-header *{cursor:all-scroll!important}.Chapter.resizing-header *,.Chapter.sliding-block *{transition:none!important;-webkit-user-select:none;user-select:none}.Chapter.sliding-block *{cursor:grabbing!important}.Chapter.resizing-block *,.Chapter.resizing-line *{transition:none!important;-webkit-user-select:none;user-select:none}.Chapter.resizing-line *{cursor:col-resize!important}body.dragging{-webkit-user-select:none;user-select:none}body.dragging,body.dragging *{cursor:grabbing!important}body.resizing{-webkit-user-select:none;user-select:none}body.sliding-block .Chapter *{transition:none!important}body.sliding-block{cursor:grabbing!important;-webkit-user-select:none;user-select:none}body.resizing-header .Chapter *{transition:none!important}body.resizing-header{cursor:all-scroll!important;-webkit-user-select:none;user-select:none}body.resizing-line .Chapter *{transition:none!important}body.resizing-line{cursor:col-resize!important;-webkit-user-select:none;user-select:none}.content-block.dragging{box-shadow:0 20px 40px #0003;opacity:.9;z-index:1000!important}.content-block.resizing{z-index:1000!important}.snap-guide-center,.snap-guide-left,.snap-guide-right{border-left:2px dashed var(--primary);bottom:0;opacity:0;pointer-events:none;position:absolute;top:0;transition:opacity .1s;width:0;z-index:100}.snap-guide-center{left:50%}.snap-guide-left{left:0}.snap-guide-center.locked,.snap-guide-left.locked,.snap-guide-right.locked{border-width:3px;box-shadow:0 0 15px var(--primary);opacity:1!important}.alignment-line{background-color:#ef4444;box-shadow:0 0 3px #fffc;display:none;pointer-events:none;position:fixed;z-index:9999}.align-h{height:1px;left:0;width:100vw}.align-v{height:100vh;top:0;width:1px}.chapter-sidebar{background:var(--bg-sidebar);border-right:1px solid #e2e8f0;display:flex;flex-direction:column;flex-shrink:0;max-width:var(--chapter-sidebar-width);overflow:hidden;position:relative;white-space:nowrap;width:var(--chapter-sidebar-width);z-index:100}.chapter-sidebar.closed .add-lesson-btn,.chapter-sidebar.closed .lesson-list-container,.chapter-sidebar.closed .sidebar-header{opacity:0;pointer-events:none;transition:opacity .1s ease}.sidebar-toggle-btn{align-items:center;background:#fff;border:1px solid #e2e8f0;border-radius:50%;box-shadow:0 2px 8px #0000001a;color:var(--text-muted);cursor:pointer;display:flex;font-size:1.2rem;height:32px;justify-content:center;left:var(--chapter-sidebar-width);position:fixed;top:50%;transform:translate(-50%,-50%);width:32px;z-index:101}.sidebar-toggle-btn:hover{border-color:var(--primary);color:var(--primary)}.sidebar-header{background:var(--bg-secondary);border-bottom:1px solid #f1f5f9;padding:30px;transition:opacity .2s}.chapter-label{color:var(--primary);display:block;font-size:.7rem;font-weight:800;letter-spacing:1.2px;margin-bottom:8px;text-transform:uppercase}.chapter-title-wrapper{align-items:flex-start;display:flex;gap:10px;justify-content:space-between}.chapter-title{color:var(--text-main);flex:1 1;font-size:1.4rem;font-weight:800;line-height:1.2;margin:0;white-space:normal}.edit-icon{cursor:pointer;flex-shrink:0;font-size:.9rem;margin-top:5px;opacity:.3}.edit-icon:hover{color:var(--primary);opacity:1}.lesson-list-container{flex:1 1;overflow-y:auto;padding:15px 20px 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.2s}.sub-link:hover{background:#ffffff80;color:var(--primary)}.sub-link.active-sub{color:var(--primary);font-weight:800;transform:translateX(2px)}.sub-link-content{align-items:center;display:flex;gap:8px;overflow:hidden}.sub-dot{background:currentColor;border-radius:50%;flex-shrink:0;height:6px;opacity:.5;width:6px}.sub-link.active-sub .sub-dot{opacity:1;transform:scale(1.2)}.page-actions-group{display:flex;gap:4px;opacity:0;transition:opacity .2s}.sub-link:hover .page-actions-group{opacity:1}.tiny-btn{align-items:center;background:#0000;border:none;border-radius:4px;color:var(--text-muted);cursor:pointer;display:flex;font-size:.75rem;height:20px;justify-content:center;width:20px}.tiny-btn:hover{background:var(--background);color:var(--primary)}.lesson-handle{cursor:grab;font-size:1.2rem;margin-right:8px;opacity:.4}.lesson-actions{display:flex;flex-shrink:0;gap:8px;opacity:0;pointer-events:auto;transition:opacity .2s}.mini-action{align-items:center;background:var(--bg-opposite);border:none;border-radius:6px;color:var(--text-muted);cursor:pointer;display:flex;font-size:.8rem;height:24px;justify-content:center;width:24px}.mini-action:hover{background:var(--bg-opposite);box-shadow:0 2px 4px #0000000d;color:var(--primary)}.add-lesson-btn{background:#0000;border:2px dashed var(--border2);border-radius:var(--radius-lg);color:var(--text-muted);cursor:pointer;font-size:.9rem;font-weight:600;margin:20px;padding:14px;text-align:center;transition:opacity .2s}.add-lesson-btn:hover{background:var(--bg-secondary);border-color:var(--primary);color:var(--primary)}.chapter-main{background:var(--bg-body);display:flex;flex:1 1;flex-direction:column;position:relative}.editor-toolbar{align-items:center;background:#fff;border:1px solid var(--border);border-radius:50px;bottom:30px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;left:50%;max-width:95vw;opacity:1;padding:12px 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#4f46e51a;border-radius:50px;color:var(--primary);display:inline-block;font-size:.8rem;font-weight:800;letter-spacing:1px;margin-bottom:10px;padding:6px 14px;text-transform:uppercase}.lesson-hero-card{background:#0000;border:1px dashed #0000;border-radius:var(--radius-xl);left:0;margin-bottom:15px;max-width:100%;padding:10px 15px;position:relative;transition:background .2s,box-shadow .2s;width:-webkit-fit-content;width:fit-content}.lesson-hero-card:hover{background:var(--bg-secondary);border-color:var(--border);box-shadow:var(--shadow-card)}.lesson-hero-card:active{border-color:var(--primary)}.hero-title{border:1px dashed #0000;border-radius:4px;color:var(--text-main);cursor:text;font-size:2.2rem;font-weight:800;line-height:1.1;margin:0;min-width:50px;pointer-events:auto}.hero-title:hover{border-color:var(--border)}.hero-title:focus{background:#ffffff80;border-color:var(--primary);outline:none}.header-resizer{align-items:center;bottom:0;cursor:all-scroll;display:flex;height:14px;left:50px;opacity:1;position:absolute;width:calc(100% - 100px);z-index:15}.header-resizer:after{background:var(--border2);border-radius:4px;content:"";display:block;height:2px;transition:all .2s;width:100%}.Chapter.resizing-header .header-resizer:after,.Chapter.resizing-line .header-resizer:after,.header-resizer:hover:after{background:var(--primary);box-shadow:0 2px 8px #4f46e54d;height:4px}.hr-handle{bottom:0;cursor:col-resize;position:absolute;top:0;width:20px;z-index:20}.hr-handle-l{left:-10px}.hr-handle-r{right:-10px}.content-block{transition:background .2s,box-shadow .2s,border-color .2s,opacity .2s,outline 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button{align-items:center;background:#0000;border:none;border-radius:6px;color:var(--text-main);cursor:pointer;display:flex;font-size:.85rem;font-weight:600;gap:8px;padding:8px 12px;text-align:left;white-space:nowrap}:lang(ar) .block-context-menu button{text-align:right}.block-context-menu button:hover{background:var(--primary-light);color:var(--primary)}.editable-area{border:1px dashed #0000;outline:none}.editable-area:focus{border-color:var(--primary)}.textual-editable{border-radius:10px;display:block;min-width:80px;padding:4px 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14px}.media-mode-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.media-modal-body{display:flex;flex-direction:column;gap:12px}.media-label{color:var(--text-muted);font-size:.92rem;font-weight:700}.media-file-input,.media-url-input{background:var(--background);border:1px solid var(--border);border-radius:10px;box-sizing:border-box;color:var(--text-main);padding:12px 14px;width:100%}.media-preview-wrap{background:#0f172a0a;border:1px solid var(--border);border-radius:16px;overflow:hidden}.media-preview{background:#000;display:block;max-height:320px;object-fit:contain;width:100%}.Modal{align-items:center;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#0f172a80;display:flex;inset:0;justify-content:center;position:fixed;z-index:4000}.chapter-modal-box{background:var(--bg-secondary);border-radius:24px;box-shadow:0 25px 50px #0003;max-width:90vw;padding:40px;width:500px}.chapter-modal-box h2{color:#1e293b;color:var(--text-main,#1e293b);margin-bottom:24px;margin-top:0}.input-heading{background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;box-sizing:border-box;color:var(--text-main);font-family:inherit;font-size:1rem;margin-bottom:16px;margin-top:0;padding:12px 16px;transition:border-color .2s ease;width:100%}.input-heading:focus{border-color:var(--accent);color:var(--background);outline:none}.input-body{background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;box-sizing:border-box;color:var(--text-main);font-family:inherit;font-size:1rem;margin-bottom:16px;min-height:100px;padding:12px 16px;resize:vertical;transition:border-color .2s ease;width:100%}.input-body:focus{border-color:var(--accent);outline:none}.control-row{display:flex;gap:16px;margin-bottom:16px}.input-number{background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;box-sizing:border-box;color:var(--text-main);font-family:inherit;font-size:1rem;padding:12px 16px;transition:border-color .2s ease;width:80px}.input-number:focus{border-color:var(--accent);outline:none}.size-label{color:var(--text-muted);display:block;font-size:.9rem;margin-bottom:4px}.wrapper-col{display:flex;flex-direction:column;gap:4px}.chapter-modal-box .btn-primary{background:var(--accent);border:none;border-radius:10px;color:var(--text-main);cursor:pointer;font-weight:600;padding:12px 24px;width:100%}.btn-cancel:hover,.chapter-modal-box .btn-primary:hover{box-shadow:0 4px 12px #6366f14d;transform:translateY(-1px)}.chapter-modal-box .btn-cancel{background:#0000;border:1px solid var(--border);border-color:var(--border);border-radius:12px;color:var(--text-main)!important;cursor:pointer;font-weight:600;padding:12px 24px;width:100%}.chapter-modal-box .btn-cancel:hover{box-shadow:0 4px 12px #6366f14d;transform:translateY(-1px)}:lang(ar) 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