.header.svelte-19refv5{display:flex;flex-direction:column;align-items:stretch;gap:10px;padding-bottom:14px;flex-shrink:0}.header__top.svelte-19refv5{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;min-width:0}.title.svelte-19refv5{margin:4px 0 0;font-size:18px;line-height:1.38;font-weight:700;color:#0f172a;min-width:0;flex:1;overflow-wrap:anywhere}.actions.svelte-19refv5{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;width:100%}.actions__main.svelte-19refv5{display:flex;align-items:center;gap:6px;flex-wrap:wrap;min-width:0}.action-btn.svelte-19refv5{display:flex;align-items:center;justify-content:center;background:transparent;border:none;cursor:pointer;border-radius:8px;transition:all .2s}.close-btn.svelte-19refv5{padding:6px;color:#475569}.close-btn.svelte-19refv5:hover,.close-btn.forced-hover.svelte-19refv5{background:#e2e8f0;color:#0f172a}.insert-btn.svelte-19refv5{color:#111827;background:#fff;border:1px solid #d1d5db;padding:6px 10px;gap:4px}.insert-btn.svelte-19refv5:hover{background:#f9fafb;color:#111827}.insert-btn.svelte-19refv5:disabled{background:#f3f4f6;color:#9ca3af;border-color:#e5e7eb;cursor:not-allowed}.btn-text.svelte-19refv5{font-size:12px;font-weight:600}.delete-btn.svelte-19refv5{color:#ef4444;background:#fee2e2;padding:6px 10px;gap:4px}.delete-btn.svelte-19refv5:hover{background:#fecaca;color:#b91c1c}.book-delete-btn.svelte-19refv5{margin-left:auto;color:#dc2626;background:#fff7f7;border:1px solid #fecaca;padding:6px 10px;gap:4px;white-space:nowrap}.book-delete-btn.svelte-19refv5:hover{background:#fee2e2;border-color:#fca5a5;color:#991b1b}.add-btn.svelte-19refv5{color:#111827;background:#fff;border:1px solid #d1d5db;padding:6px 10px;gap:4px}.add-btn.svelte-19refv5:hover{background:#f9fafb;color:#111827}.add-btn.svelte-19refv5:disabled{background:#f3f4f6;color:#9ca3af;border-color:#e5e7eb;cursor:not-allowed}.problem-row.svelte-si9dmq{display:flex;align-items:center;padding:8px 12px;background:#fff;border-bottom:1px solid #f1f5f9;cursor:pointer;transition:background-color .15s;-webkit-user-select:none;user-select:none}.problem-row.svelte-si9dmq:hover{background:#f8fafc}.problem-row.selected.svelte-si9dmq{background:#eff6ff}.problem-row.focused.svelte-si9dmq{outline:2px solid #3b82f6;outline-offset:-2px}.drag-handle.svelte-si9dmq{color:#94a3b8;cursor:grab;margin-right:8px;display:flex;align-items:center}.drag-handle.svelte-si9dmq:active{cursor:grabbing}.checkbox-wrapper.svelte-si9dmq{margin-right:12px;display:flex;align-items:center}.info.svelte-si9dmq{flex:1;min-width:0}.top-row.svelte-si9dmq{display:flex;align-items:center;gap:8px;margin-bottom:2px}.number.svelte-si9dmq{font-weight:600;color:#0f172a;font-size:14px;width:50px;flex-shrink:0}.badge.svelte-si9dmq{font-size:11px;padding:2px 6px;border-radius:4px;font-weight:500;display:inline-block;text-align:center}.badge.difficulty.svelte-si9dmq{background:#f1f5f9;color:#475569;min-width:58px;flex-shrink:0}.type.svelte-si9dmq{font-size:12px;color:#64748b;width:60px;flex-shrink:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.page.svelte-si9dmq{font-size:12px;color:#94a3b8;width:40px;flex-shrink:0;text-align:right}.actions.svelte-si9dmq{display:flex;align-items:center;gap:6px;margin-left:auto}.action-btn.svelte-si9dmq{display:inline-flex;align-items:center;justify-content:center;border:none;background:transparent;color:#64748b;border-radius:6px;padding:4px;cursor:pointer;transition:background-color .15s,color .15s}.action-btn.svelte-si9dmq:hover{background:#e2e8f0;color:#0f172a}.delete-btn.svelte-si9dmq{color:#ef4444}.delete-btn.svelte-si9dmq:hover{background:#fee2e2;color:#b91c1c}.action-btn.svelte-si9dmq:disabled{background:transparent;color:#cbd5e1;cursor:not-allowed}.chapter-header.svelte-qqotf{display:flex;align-items:center;gap:12px;padding:16px 16px 8px;background:#fff;position:sticky;top:0;z-index:5}.text.svelte-qqotf{font-size:12px;font-weight:600;color:#64748b;white-space:nowrap;display:flex;align-items:center;gap:6px}.major.svelte-qqotf{color:#475569}.divider.svelte-qqotf{color:#cbd5e1}.content-area.svelte-149rc07{height:100%;overflow-y:auto;background:transparent;position:relative}.list-container.svelte-149rc07{padding-bottom:20px}.state-msg.svelte-149rc07{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#64748b;font-size:14px;gap:12px}.state-msg.error.svelte-149rc07{color:#ef4444}.spinner.svelte-149rc07{width:24px;height:24px;border:3px solid #e2e8f0;border-top-color:#3b82f6;border-radius:50%;animation:svelte-149rc07-spin .8s linear infinite}.spinner--sm.svelte-149rc07{width:14px;height:14px;border-width:2px}.status-overlay.svelte-149rc07{position:absolute;top:12px;right:12px;display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#fffffff2;border:1px solid #e2e8f0;color:#475569;font-size:12px;box-shadow:0 6px 16px #0f172a14;z-index:50;white-space:nowrap}@keyframes svelte-149rc07-spin{to{transform:rotate(360deg)}}.search-meta.svelte-xots28{display:flex;flex-direction:column;background:#fff;border-top:1px solid #e2e8f0;font-size:12px}.meta-row.svelte-xots28{display:flex;align-items:center;padding:6px 16px;border-bottom:1px solid #f1f5f9;min-height:36px}.meta-row.svelte-xots28:last-child{border-bottom:none}.meta-label.svelte-xots28{width:80px;color:#64748b;font-weight:500;flex-shrink:0}.meta-label-toggle.svelte-xots28{width:80px;background:none;border:none;padding:0;cursor:pointer;font-size:12px;color:#64748b;display:flex;gap:0;flex-shrink:0}.meta-label-toggle.svelte-xots28 span.active:where(.svelte-xots28){font-weight:700;color:#1e293b}.meta-value-wrapper.svelte-xots28{flex:1;display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.meta-value-wrapper.svelte-xots28::-webkit-scrollbar{display:none}.range-inputs.svelte-xots28{display:flex;align-items:center;gap:4px}.range-input.svelte-xots28{width:60px;height:24px;border:1px solid #cbd5e1;border-radius:4px;padding:0 6px;font-size:12px;text-align:center}.range-input.svelte-xots28:focus{outline:none;border-color:#3b82f6}.range-input.no-border.svelte-xots28{border:none;background:#f1f5f9}.range-text.svelte-xots28{color:#64748b}.chip.svelte-xots28{background:#f1f5f9;border:1px solid transparent;color:#475569;padding:2px 8px;border-radius:12px;font-size:11px;cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;transition:all .15s}.chip.svelte-xots28:hover{background:#e2e8f0}.chip.active.svelte-xots28{background:#eff6ff;color:#2563eb;border-color:#bfdbfe;font-weight:500}.controls-row.svelte-xots28{justify-content:space-between;background:#f8fafc}.selection-controls.svelte-xots28{display:flex;align-items:center;gap:12px}.count-text.svelte-xots28{color:#2563eb;font-weight:600}.total-text.svelte-xots28{color:#64748b;font-weight:400}.select-all-btn.svelte-xots28{display:flex;align-items:center;gap:4px;background:none;border:1px solid #cbd5e1;padding:2px 8px;border-radius:4px;color:#475569;cursor:pointer;font-size:11px}.select-all-btn.svelte-xots28:hover{background:#fff;color:#1e293b}.insert-btn.svelte-xots28{display:flex;align-items:center;gap:4px;background:#2563eb;color:#fff;border:none;padding:4px 12px;border-radius:4px;font-weight:500;cursor:pointer;font-size:12px}.insert-btn.svelte-xots28:hover:not(:disabled){background:#1d4ed8}.insert-btn.svelte-xots28:disabled{background:#cbd5e1;cursor:not-allowed}.modal-backdrop.svelte-9kjs4m{position:fixed;top:0;left:0;width:100%;height:100%;background:#0006;display:flex;align-items:center;justify-content:center;z-index:100}.modal.svelte-9kjs4m{background:#fff;padding:24px;border-radius:12px;width:320px;box-shadow:0 4px 12px #00000026}h3.svelte-9kjs4m{margin:0 0 12px;font-size:18px;color:#0f172a}p.svelte-9kjs4m{color:#475569;margin-bottom:24px;line-height:1.5}.warning.svelte-9kjs4m{color:#d97706;font-size:13px}.actions.svelte-9kjs4m{display:flex;justify-content:flex-end;gap:8px}button.svelte-9kjs4m{padding:8px 16px;border-radius:6px;border:none;font-weight:600;cursor:pointer}.cancel.svelte-9kjs4m{background:#f1f5f9;color:#64748b}.confirm.svelte-9kjs4m{background:#2563eb;color:#fff}.message.svelte-1oo1uki{font-size:14px;line-height:1.6;color:#334155}.problem-list-panel.svelte-zgv3f8{display:flex;flex-direction:column;height:100%;min-height:0;overflow:hidden;background:#ffffffe6;border-radius:16px;padding:16px;box-shadow:inset 0 1px #fff9,0 10px 26px #0000000d;border:1px solid rgba(255,255,255,.6)}.problem-list-panel--embedded.svelte-zgv3f8{background:transparent;border:none;border-radius:0;padding:0;box-shadow:none}.panel__search.svelte-zgv3f8{padding:12px 16px;border-bottom:1px solid #f1f5f9}.panel__content.svelte-zgv3f8{flex:1;overflow:hidden;position:relative}.problem-preview-editor.svelte-iqpqmx{position:relative;height:100%;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6}.editor-container.svelte-iqpqmx{position:relative;height:100%}.problem-preview-editor .custom-box-delete,.problem-preview-editor .custom-box-dragger,.problem-preview-editor .image-resizer{display:none!important}.problem-preview-editor .custom-box-node{border:1px solid #e2e8f0;border-radius:8px;margin:1em 0;min-height:auto!important;height:auto!important}.problem-preview-editor .custom-box-meta{background:transparent;border-bottom:none;border-radius:0;padding:0}.problem-preview-editor .custom-box-node[data-problem-number*="~"] .custom-box-number{font-size:12px;font-weight:500;letter-spacing:.02em;color:#64748b;text-transform:none}.problem-preview-editor .custom-box-node[data-problem-number*="~"] .custom-box-number:before{content:"[";margin-right:2px}.problem-preview-editor .custom-box-node[data-problem-number*="~"] .custom-box-number:after{content:"]";margin-left:2px}.markdown-panel.svelte-1q7rn63{border-top:1px solid #e2e8f0;background:#f8fafc;display:grid;gap:12px;padding:14px 16px 16px}.markdown-panel__header.svelte-1q7rn63{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.markdown-panel__header.svelte-1q7rn63 h4:where(.svelte-1q7rn63){margin:0;font-size:14px;font-weight:700;color:#0f172a}.markdown-panel__solution.svelte-1q7rn63{display:grid;gap:8px}.markdown-panel__subheader.svelte-1q7rn63 h5:where(.svelte-1q7rn63){margin:0;font-size:13px;font-weight:700;color:#334155}.markdown-panel__close.svelte-1q7rn63,.markdown-panel__button.svelte-1q7rn63{border:1px solid #dbe2ec;border-radius:8px;background:#fff;color:#334155;cursor:pointer;padding:7px 10px;font-size:12px;font-weight:600}.markdown-panel__close.svelte-1q7rn63{padding:6px;display:inline-flex;align-items:center;justify-content:center}.markdown-panel__close.svelte-1q7rn63:hover,.markdown-panel__button.svelte-1q7rn63:hover{background:#f8fafc;color:#0f172a}.markdown-panel__textarea.svelte-1q7rn63{width:100%;height:180px;min-height:140px;resize:none;border:1px solid #cbd5e1;border-radius:12px;padding:12px;font-size:12px;line-height:1.6;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;color:#0f172a;background:#fff}.markdown-panel__textarea--readonly.svelte-1q7rn63{height:120px;min-height:96px;background:#fefefe;color:#334155}.markdown-panel__empty.svelte-1q7rn63{margin:0;border:1px dashed #cbd5e1;border-radius:10px;padding:12px;background:#fff;color:#64748b;font-size:12px}.markdown-panel__error.svelte-1q7rn63{margin:0;font-size:12px;color:#b91c1c}.markdown-panel__footer.svelte-1q7rn63{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}.markdown-panel__button--primary.svelte-1q7rn63{background:#0f172a;border-color:#0f172a;color:#fff}.markdown-panel__button--primary.svelte-1q7rn63:hover{background:#1e293b;border-color:#1e293b;color:#fff}.meta-panel.svelte-1fm0bbr{border-top:1px solid #e2e8f0;background:#fff;padding:0;max-height:52%;overflow-y:auto}.meta-panel.svelte-1fm0bbr .preview-meta{height:auto}.meta-header.svelte-1fm0bbr{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background-color:#f9fafb;border-bottom:1px solid #e2e8f0}.meta-header.svelte-1fm0bbr h4:where(.svelte-1fm0bbr){font-size:14px;font-weight:600;color:#1e293b;margin:0}.meta-header__actions.svelte-1fm0bbr{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}.meta-action.svelte-1fm0bbr,.close-meta.svelte-1fm0bbr{border:1px solid #dbe2ec;border-radius:8px;background:#fff;color:#334155;cursor:pointer;padding:7px 10px;font-size:12px;font-weight:600}.meta-action.svelte-1fm0bbr:hover,.close-meta.svelte-1fm0bbr:hover{background:#f8fafc;color:#0f172a}.preview-panel.svelte-ysyxho{display:flex;flex-direction:column;height:100%;background:#fff;border-left:1px solid #e2e8f0;overflow:hidden}.preview-panel--embedded.svelte-ysyxho{background:transparent;border-left:none}.panel__header.svelte-ysyxho{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid #e2e8f0}.panel__title.svelte-ysyxho{font-size:16px;font-weight:700;color:#1e293b;margin:0}.panel__close.svelte-ysyxho{border:none;background:transparent;color:#64748b;cursor:pointer;padding:4px;border-radius:4px}.panel__close.svelte-ysyxho:hover,.panel__close.forced-hover.svelte-ysyxho{background:#f1f5f9;color:#0f172a}.preview-content.svelte-ysyxho{flex:1;display:flex;flex-direction:column;overflow:hidden}.viewer-shell.svelte-ysyxho{flex:1;min-height:0;display:flex;overflow:hidden}.viewer-wrapper.svelte-ysyxho{flex:1;overflow-y:auto;padding:16px}.loading-placeholder.svelte-ysyxho{display:flex;align-items:center;justify-content:center;height:100%;min-height:200px;color:#64748b;font-size:14px}.panel.svelte-1mbavyn{background:#ffffffe6;border-radius:16px;padding:16px;box-shadow:inset 0 1px #fff9,0 10px 26px #0000000d;border:1px solid rgba(255,255,255,.6);display:flex;flex-direction:column;min-height:0;overflow:hidden}.problem-workspace-panel.svelte-1mbavyn{padding:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0}.problem-workspace-panel__list.svelte-1mbavyn,.problem-workspace-panel__preview.svelte-1mbavyn{min-width:0;min-height:0}.problem-workspace-panel__list.svelte-1mbavyn{border-right:1px solid #e2e8f0;padding:16px}.problem-workspace-panel__preview.svelte-1mbavyn{padding:16px}@media (max-width: 1024px){.problem-workspace-panel.svelte-1mbavyn{grid-template-columns:1fr}.problem-workspace-panel__list.svelte-1mbavyn{border-right:none;border-bottom:1px solid #e2e8f0}}@media (max-width: 768px){.panel.svelte-1mbavyn{padding:12px}}
