.vfc-quick-tools,.vfc-editor-window{--vfc-ink:#24253e;--vfc-muted:#73768b;--vfc-primary:#5145e8;--vfc-surface:#fcfcff;--vfc-soft:#f0f1ff;--vfc-border:#dfe0f1;color:var(--vfc-ink);font-family:Inter,ui-sans-serif,system-ui,sans-serif}.vfc-editor-layer{z-index:119;pointer-events:none;position:fixed;inset:0}.vfc-editor-layer .vfc-editor-window{pointer-events:auto}.vh-page[data-theme=dark] .vfc-quick-tools,.vh-page[data-theme=dark] .vfc-editor-window{--vfc-ink:#f5f3ff;--vfc-muted:#c3c0d8;--vfc-primary:#afa5ff;--vfc-surface:#24243f;--vfc-soft:#2d2c52;--vfc-border:#454361}.vfc-quick-tools{z-index:110;border:1px solid var(--vfc-border);background:var(--vfc-surface);border-radius:17px;width:min(272px,100vw - 24px);max-height:calc(100dvh - 24px);padding:15px;position:fixed;overflow-y:auto;box-shadow:0 22px 60px 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var(--vfc-border);width:100%;min-height:43px;color:var(--vfc-ink);background:var(--vfc-surface);text-align:left;border-radius:11px;justify-content:space-between;align-items:center;gap:10px;margin-top:7px;padding:0 11px;display:flex;font-size:12px!important;font-weight:700!important}.vfc-quick-action>span{align-items:center;gap:8px;display:flex}.vfc-quick-action svg{color:var(--vfc-primary);flex:none}.vfc-quick-action:hover{border-color:var(--vfc-primary);background:var(--vfc-soft)}.vfc-quick-action.vfc-quick-primary{color:#fff;background:#5145e8;border-color:#5145e8}.vfc-quick-action.vfc-quick-primary svg{color:#fff}.vfc-quick-action.vfc-quick-primary:hover{background:#4435db}.vfc-editor-window{z-index:120;border:1px solid var(--vfc-border);background:var(--vfc-surface);border-radius:18px;flex-direction:column;width:min(560px,100vw - 24px);max-height:calc(100dvh - 24px);display:flex;position:fixed;top:max(12px,50dvh - 310px);left:max(12px,50vw - 280px);overflow:hidden;box-shadow:0 28px 90px #19183245}.vfc-editor-header{border-bottom:1px solid var(--vfc-border);background:var(--vfc-surface);cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;flex:none;min-height:58px;padding:9px 12px 9px 18px}.vfc-editor-header:active{cursor:grabbing}.vfc-editor-header-copy{min-width:0}.vfc-editor-header-copy strong{text-overflow:ellipsis;white-space:nowrap;font-family:Sora,Inter,sans-serif;font-size:14px;display:block;overflow:hidden}.vfc-editor-header-copy small{color:var(--vfc-muted);margin-top:2px;font-size:10px;display:block}.vfc-editor-body{gap:13px;min-height:0;padding:17px;display:grid;overflow-y:auto}.vfc-field{gap:6px;display:grid}.vfc-field>label,.vfc-field-label{color:var(--vfc-ink);font-size:12px;font-weight:800}.vfc-editor-input,.vfc-editor-select,.vfc-editor-search{border:1px solid var(--vfc-border);width:100%;min-height:42px;color:var(--vfc-ink);background:var(--vfc-surface);font:inherit;border-radius:10px;padding:10px 11px;font-size:13px}.vfc-editor-input:focus,.vfc-editor-select:focus,.vfc-editor-search:focus{border-color:var(--vfc-primary);outline:3px solid #5145e833}.vfc-editor-input{resize:vertical;min-height:94px;line-height:1.55}.vfc-editor-toolbar{flex-wrap:wrap;gap:6px;display:flex}.vfc-editor-tool{border:1px solid var(--vfc-border);min-width:34px;height:32px;color:var(--vfc-ink);background:var(--vfc-surface);border-radius:8px;padding:0 8px;font-size:12px!important;font-weight:700!important}.vfc-editor-tool:hover{border-color:var(--vfc-primary);background:var(--vfc-soft)}.vfc-editor-status{min-height:19px;color:var(--vfc-muted);align-items:center;gap:7px;font-size:11px;display:flex}.vfc-editor-status.vfc-status-saved{color:#138866}.vfc-editor-status.vfc-status-error{color:#b9334b}.vfc-editor-status button,.vfc-inline-link{color:var(--vfc-primary);background:0 0;border:0;padding:0;font-size:11px;font-weight:800;text-decoration:underline}.vfc-folder-row{align-items:center;gap:7px;display:flex}.vfc-create-folder{border:1px solid var(--vfc-border);background:var(--vfc-soft);border-radius:10px;gap:7px;margin-top:8px;padding:9px;display:grid}.vfc-reference-open{max-width:240px;color:inherit;font:inherit;text-align:left;text-overflow:ellipsis;white-space:nowrap;background:0 0;border:0;padding:0;overflow:hidden}.vfc-reference-deleted{color:#b9334b;background:#fff0f2}.vfc-reference-results{border:1px solid var(--vfc-border);background:var(--vfc-surface);border-radius:10px;max-height:150px;display:grid;overflow:auto}.vfc-reference-results>button{border:0;border-bottom:1px solid var(--vfc-border);min-width:0;color:var(--vfc-ink);text-align:left;background:0 0;justify-content:space-between;align-items:center;gap:8px;padding:9px 10px;font-size:11px;display:flex}.vfc-reference-results>button:hover{background:var(--vfc-soft)}.vfc-reference-results>button 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12px;display:inline-flex;font-size:12px!important;font-weight:800!important}.vfc-ai-button:disabled{opacity:.5;cursor:not-allowed}.vfc-muted-copy{color:var(--vfc-muted);margin-top:6px;font-size:10px;line-height:1.45;display:block}.vfc-ai-error{color:#b9334b;flex-wrap:wrap;align-items:center;gap:7px;margin-top:8px;font-size:11px;display:flex}.vfc-ai-error button{color:var(--vfc-primary);font:inherit;background:0 0;border:0;padding:0;font-weight:800;text-decoration:underline}.vfc-editor-suggestion>strong{color:var(--vfc-primary);font-size:11px}.vfc-suggestion-content{min-width:0}.vfc-suggestion-content>b{margin-bottom:3px;display:block}.vfc-editor-suggestion .vfc-editor-tool{justify-self:start}.vfc-editor-actions>div{align-items:center;gap:7px;display:flex}.vfc-editor-actions .vfc-editor-delete{color:#b9334b;margin-right:auto}.vfc-editor-reference-list{flex-wrap:wrap;gap:6px;display:flex}.vfc-reference-chip{border:1px solid var(--vfc-border);max-width:100%;color:var(--vfc-ink);background:var(--vfc-soft);border-radius:99px;align-items:center;gap:6px;padding:5px 8px;font-size:11px;display:inline-flex}.vfc-reference-chip button{width:18px;height:18px;color:var(--vfc-muted);background:0 0;border:0;border-radius:50%;place-items:center;display:grid}.vfc-editor-suggestion{border:1px solid var(--vfc-border);background:var(--vfc-soft);border-radius:11px;gap:8px;padding:11px;display:grid}.vfc-suggestion-content{color:var(--vfc-ink);white-space:pre-wrap;font-size:12px;line-height:1.55}.vfc-editor-actions{border-top:1px solid var(--vfc-border);justify-content:space-between;align-items:center;gap:9px;padding:11px 17px 14px;display:flex}.vfc-editor-actions button{border:1px solid var(--vfc-border);min-height:39px;color:var(--vfc-ink);background:var(--vfc-surface);border-radius:10px;padding:0 13px;font-size:12px!important;font-weight:750!important}.vfc-editor-actions .vfc-editor-primary{color:#fff;background:#5145e8;border-color:#5145e8}.vfc-editor-actions button:disabled{opacity:.5;cursor:not-allowed}@media (width<=600px){.vfc-editor-window{width:calc(100vw - 24px);max-height:min(690px,100dvh - 16px);left:12px!important;top:max(8px, env(safe-area-inset-top))!important}.vfc-editor-body{padding:13px}}.vfc-page{--vfc-ink:#24253e;--vfc-muted:#73768b;--vfc-primary:#5145e8;--vfc-surface:#fcfcff;--vfc-soft:#f0f1ff;--vfc-border:#dfe0f1;color:var(--vfc-ink)}.vh-page[data-theme=dark] .vfc-page{--vfc-ink:#f5f3ff;--vfc-muted:#c3c0d8;--vfc-primary:#afa5ff;--vfc-surface:#24243f;--vfc-soft:#2d2c52;--vfc-border:#454361}.vfc-page button,.vfc-page input,.vfc-page select{font:inherit}.vfc-page-heading{justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:22px;display:flex}.vfc-page-heading .vs-kicker{align-items:center;gap:6px;display:flex}.vfc-page-heading h1{letter-spacing:-.04em;margin-top:7px;font-family:Sora,Inter,sans-serif;font-size:clamp(27px,3vw,36px);line-height:1.16}.vfc-page-heading>div>p:last-child{color:var(--vfc-muted);margin-top:8px;font-size:13px;line-height:1.55}.vfc-add-card,.vfc-page .vfc-empty-state>button,.vfc-review-start{color:#fff;background:#5145e8;border:0;border-radius:12px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 15px;display:inline-flex;box-shadow:0 10px 22px -13px #5145e8a6;font-size:12px!important;font-weight:800!important}.vfc-add-card:hover,.vfc-page .vfc-empty-state>button:hover,.vfc-review-start:hover{background:#4435db}.vfc-tabbar{background:#ffffff85;border:1px solid #ffffffb5;border-radius:13px;gap:5px;width:fit-content;max-width:100%;padding:4px;display:flex;overflow-x:auto}.vfc-tabbar button{min-height:38px;color:var(--vfc-muted);white-space:nowrap;background:0 0;border:0;border-radius:9px;justify-content:center;align-items:center;gap:7px;padding:0 12px;display:flex;font-size:11px!important;font-weight:750!important}.vfc-tabbar button:hover{background:var(--vfc-soft);color:var(--vfc-primary)}.vfc-tabbar button.vfc-tab-active{color:var(--vfc-primary);background:var(--vfc-surface);box-shadow:0 4px 15px #36345e14}.vfc-tab-count{min-width:19px;color:var(--vfc-primary);background:var(--vfc-soft);text-align:center;border-radius:99px;padding:1px 5px;font-size:10px}.vfc-library-layout{grid-template-columns:250px minmax(0,1fr);gap:18px;min-height:440px;margin-top:15px;display:grid}.vfc-tree-panel,.vfc-library-main,.vfc-review-section{background:#ffffffa8;border:1px solid #ffffffb6;border-radius:17px;min-width:0;box-shadow:0 12px 34px -23px #42437655}.vfc-tree-panel{padding:14px 10px}.vfc-tree-heading{border-bottom:1px solid var(--vfc-border);justify-content:space-between;align-items:center;padding:0 7px 10px;display:flex}.vfc-tree-heading strong{font-family:Sora,Inter,sans-serif;font-size:13px}.vfc-tree-heading button{width:31px;height:31px;color:var(--vfc-primary);background:var(--vfc-soft);border:0;border-radius:9px;font-size:20px!important}.vfc-tree-item{min-width:0;min-height:35px;color:var(--vfc-muted);text-align:left;background:0 0;border:0;border-radius:8px;flex:1;align-items:center;gap:8px;padding:0 8px;display:flex;font-size:11px!important;font-weight:650!important}.vfc-tree-item:hover,.vfc-tree-selected .vfc-tree-item,.vfc-tree-item.vfc-tree-selected{color:var(--vfc-primary);background:var(--vfc-soft)}.vfc-tree-item span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.vfc-tree-panel>.vfc-tree-item{width:100%;margin-top:4px}.vfc-tree-row{border-radius:8px;align-items:center;gap:4px;min-height:37px;margin-top:2px;display:flex}.vfc-tree-row:hover,.vfc-tree-row.vfc-tree-selected{background:var(--vfc-soft)}.vfc-tree-row .vfc-tree-item{padding-left:0}.vfc-tree-actions{flex:none;display:none}.vfc-tree-row:hover .vfc-tree-actions,.vfc-tree-row:focus-within 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button{color:#fff;background:#5145e8;border:0;border-radius:7px;min-height:32px;font-size:11px;font-weight:800}.vfc-tree-create button:disabled{opacity:.5}.vfc-tree-create small{color:#b9334b;font-size:10px}.vfc-library-main{padding:16px}.vfc-list-toolbar{justify-content:space-between;align-items:center;gap:13px;margin-bottom:14px;display:flex}.vfc-list-toolbar h2,.vfc-section-heading h2{font-family:Sora,Inter,sans-serif;font-size:17px;line-height:1.3}.vfc-list-toolbar p{color:var(--vfc-muted);margin-top:4px;font-size:11px}.vfc-search{border:1px solid var(--vfc-border);width:min(250px,44%);min-height:37px;color:var(--vfc-muted);background:var(--vfc-surface);border-radius:10px;align-items:center;gap:7px;padding:0 10px;display:flex}.vfc-search input{width:100%;min-width:0;color:var(--vfc-ink);background:0 0;border:0;outline:0;font-size:11px}.vfc-card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;display:grid}.vfc-personal-card{border:1px solid var(--vfc-border);background:var(--vfc-surface);border-radius:13px;flex-direction:column;min-width:0;min-height:168px;padding:13px;display:flex}.vfc-card-open{min-width:0;color:inherit;text-align:left;background:0 0;border:0;flex:1;align-content:start;gap:8px;padding:0;display:grid}.vfc-card-open:hover .vfc-card-question{color:var(--vfc-primary)}.vfc-card-question{min-height:22px;max-height:66px;overflow:hidden}.vfc-card-answer{max-height:48px;color:var(--vfc-muted);overflow:hidden}.vfc-card-source{color:var(--vfc-primary);background:0 0;border:0;align-self:flex-start;align-items:center;gap:5px;margin-top:8px;padding:0;display:inline-flex;font-size:10px!important;font-weight:700!important}.vfc-card-bottom{border-top:1px solid 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button,.vfc-page-state button{border:1px solid var(--vfc-border);min-height:30px;color:var(--vfc-ink);background:var(--vfc-surface);border-radius:7px;padding:0 9px;font-size:10px;font-weight:700}.vfc-pagination button:disabled{opacity:.5}.vfc-page-state{min-height:90px;color:var(--vfc-muted);flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;padding:18px;font-size:12px;display:flex}.vfc-empty-state{border:1px dashed var(--vfc-border);min-height:210px;color:var(--vfc-muted);text-align:center;border-radius:13px;align-content:center;justify-items:center;gap:8px;padding:20px;display:grid}.vfc-empty-state>span{width:44px;height:44px;color:var(--vfc-primary);background:var(--vfc-soft);border-radius:14px;place-items:center;display:grid}.vfc-empty-state h3{color:var(--vfc-ink);font-family:Sora,Inter,sans-serif;font-size:15px}.vfc-empty-state 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var(--vfc-primary);background:var(--vfc-soft);border-radius:0 8px 8px 0;padding:9px 10px}.vfc-daily-actions{flex-wrap:wrap;justify-content:flex-end;align-items:flex-start;gap:6px;display:flex}.vfc-daily-actions button{border:1px solid var(--vfc-border);min-height:31px;color:var(--vfc-primary);background:var(--vfc-surface);border-radius:8px;padding:0 9px;font-size:10px;font-weight:750}.vfc-daily-actions .vfc-daily-mark{color:#fff;background:#5145e8;border-color:#5145e8}.vfc-daily-actions>small{color:#b9334b;font-size:10px}.vfc-daily-actions>small button{color:var(--vfc-primary);border:0;padding:0;text-decoration:underline}.vfc-reviewed-badge{color:#138866;background:#e4f5ed;border-radius:99px;align-items:center;gap:5px;padding:6px 8px;font-size:10px;font-weight:800;display:inline-flex}.vfc-daily-source{color:var(--vfc-primary);background:0 0;border:0;grid-column:1/-1;justify-self:start;align-items:center;gap:5px;padding:0;display:inline-flex;font-size:10px!important;font-weight:750!important}.vfc-dialog-layer{z-index:150;backdrop-filter:blur(4px);background:#17172c80;place-items:center;padding:15px;display:grid;position:fixed;inset:0}.vfc-action-dialog,.vfc-study-dialog{border:1px solid var(--vfc-border);width:min(510px,100%);max-height:min(760px,100dvh - 30px);color:var(--vfc-ink);background:var(--vfc-surface);border-radius:17px;padding:19px;overflow:auto;box-shadow:0 25px 90px #12112e55}.vfc-action-dialog h2,.vfc-study-header h2{font-family:Sora,Inter,sans-serif;font-size:17px}.vfc-action-dialog>p{color:var(--vfc-muted);margin:8px 0;font-size:11px;line-height:1.5}.vfc-action-dialog>p[role=alert]{color:#b9334b}.vfc-delete-count{background:var(--vfc-soft);border-radius:9px;padding:8px 10px;font-weight:800;color:var(--vfc-primary)!important}.vfc-radio-option{align-items:center;gap:8px;margin:13px 0 7px;font-size:11px;font-weight:750;display:flex}.vfc-radio-option input{accent-color:#5145e8}.vfc-radio-danger{color:#b9334b}.vfc-dialog-actions{justify-content:flex-end;gap:7px;margin-top:16px;display:flex}.vfc-dialog-actions button,.vfc-study-footer>button{border:1px solid var(--vfc-border);min-height:37px;color:var(--vfc-ink);background:var(--vfc-surface);border-radius:9px;padding:0 12px;font-size:11px;font-weight:750}.vfc-dialog-actions .vfc-dialog-primary,.vfc-study-footer .vfc-dialog-primary{color:#fff;background:#5145e8;border-color:#5145e8}.vfc-dialog-actions .vfc-dialog-danger{color:#fff;background:#b9334b;border-color:#b9334b}.vfc-dialog-actions button:disabled{opacity:.45}.vfc-toast-error{z-index:180;color:#a12d43;background:#fff1f4;border:1px solid #efc3cd;border-radius:10px;align-items:center;gap:12px;padding:11px 14px;font-size:11px;display:flex;position:fixed;bottom:17px;right:17px;box-shadow:0 10px 35px #1a19352b}.vfc-toast-error button{color:#a12d43;background:0 0;border:0;font-weight:800;text-decoration:underline}.vfc-study-dialog{padding:0}.vfc-study-header{border-bottom:1px solid var(--vfc-border);justify-content:space-between;align-items:flex-start;gap:12px;padding:17px 18px 13px;display:flex}.vfc-study-header .vs-kicker{margin-bottom:5px}.vfc-study-content{gap:15px;padding:18px;display:grid}.vfc-study-content h3{font-family:Sora,Inter,sans-serif}.vfc-study-answer{border:1px solid var(--vfc-border);background:var(--vfc-soft);border-radius:12px;padding:14px}.vfc-rating-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;display:grid}.vfc-rating-grid button{border:1px solid var(--vfc-border);min-height:58px;color:var(--vfc-ink);background:var(--vfc-surface);border-radius:10px;align-content:center;gap:3px;display:grid}.vfc-rating-grid button:hover:not(:disabled){border-color:var(--vfc-primary);background:var(--vfc-soft)}.vfc-rating-grid button:disabled{opacity:.55}.vfc-rating-grid button strong{font-size:11px}.vfc-rating-grid button small{color:var(--vfc-muted);font-size:9px}.vfc-rating-hint{color:var(--vfc-muted);font-size:10px;line-height:1.5}.vfc-review-success{color:#138866;background:#e4f5ed;border-radius:10px;align-items:flex-start;gap:9px;padding:12px;font-size:12px;font-weight:750;display:flex}.vfc-study-footer{border-top:1px solid var(--vfc-border);justify-content:flex-end;gap:7px;padding:12px 18px 16px;display:flex}.vfc-page[data-theme=dark] .vfc-tabbar,.vh-page[data-theme=dark] .vfc-tree-panel,.vh-page[data-theme=dark] .vfc-library-main,.vh-page[data-theme=dark] .vfc-review-section{background:#282743e8;border-color:#454361}.vh-page[data-theme=dark] .vfc-personal-card,.vh-page[data-theme=dark] .vfc-due-card,.vh-page[data-theme=dark] .vfc-daily-group,.vh-page[data-theme=dark] .vfc-action-dialog,.vh-page[data-theme=dark] .vfc-study-dialog,.vh-page[data-theme=dark] .vfc-tree-create,.vh-page[data-theme=dark] .vfc-tabbar button.vfc-tab-active{background:#24243f}.vh-page[data-theme=dark] .vfc-delete-count{color:#c9c3ff!important}.vh-page[data-theme=dark] .vfc-daily-topic,.vh-page[data-theme=dark] .vfc-study-answer{background:#2d2c52}@media (width<=900px){.vfc-library-layout{grid-template-columns:205px minmax(0,1fr)}.vfc-due-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=680px){.vfc-page-heading{align-items:flex-start;gap:9px}.vfc-add-card{white-space:nowrap;justify-content:flex-start;width:43px;height:43px;padding:0 12px;overflow:hidden;font-size:0!important}.vfc-add-card svg{flex:none}.vfc-library-layout{grid-template-columns:1fr}.vfc-tree-panel{padding:11px}.vfc-tree-row .vfc-tree-actions{display:flex}.vfc-card-grid{grid-template-columns:1fr}.vfc-list-toolbar{flex-direction:column;align-items:flex-start}.vfc-search{width:100%}.vfc-library-main,.vfc-review-section{padding:13px}.vfc-tabbar{justify-content:flex-start;width:100%}.vfc-tabbar button{padding:0 9px}.vfc-due-grid,.vfc-daily-card{grid-template-columns:1fr}.vfc-daily-actions{justify-content:flex-start}.vfc-section-heading{flex-direction:column}.vfc-rating-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}