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14px;font-size:13px}@media (max-width:960px){.login-page-new{flex-direction:column}.login-hero{min-height:auto;padding:32px 28px}.login-hero-title{font-size:28px}.login-features-grid{grid-template-columns:1fr}.login-form-side{border-top:1px solid #bad37b14;border-left:none;width:100%;min-width:auto;padding:32px 24px}}.resource-viewer-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:200;background:#000000d9;justify-content:center;align-items:center;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.resource-viewer-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;width:90%;max-width:1000px;height:85vh;animation:.3s fadeIn;display:flex;overflow:hidden}.resource-viewer-header{border-bottom:1px solid var(--border);background:var(--bg-secondary);justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.resource-viewer-body{flex:1;justify-content:center;align-items:center;padding:20px;display:flex;overflow:auto}.resource-viewer-body iframe,.resource-viewer-body video{border:none;border-radius:8px;width:100%;height:100%}.resource-viewer-body img{object-fit:contain;border-radius:8px;max-width:100%;max-height:100%}.mobile-menu-btn{border:1px solid var(--border);background:var(--bg-card);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;font-size:20px;display:none}@media (max-width:768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.mobile-menu-btn{display:flex}.page-content,.stat-card{padding:16px}.stat-value{font-size:22px}}@media (max-width:480px){.login-card{width:100%;margin:16px;padding:28px}.tabs{flex-wrap:wrap}}.editor-layout{background:var(--bg-primary);flex-direction:column;height:100vh;display:flex;overflow:hidden}.editor-topbar{background:var(--bg-secondary);border-bottom:1px solid var(--border);z-index:30;justify-content:space-between;align-items:center;height:56px;min-height:56px;padding:0 20px;display:flex}.editor-topbar-title{letter-spacing:-.3px;font-size:16px;font-weight:700}.editor-topbar-divider{background:var(--border);width:1px;height:24px}.editor-body{flex:1;display:flex;overflow:hidden}.editor-sidebar{background:var(--bg-secondary);border-right:1px solid var(--border);flex-direction:column;width:300px;min-width:300px;display:flex}.editor-sidebar-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.editor-steps-list{flex:1;padding:8px;overflow-y:auto}.editor-step-item{border-radius:var(--radius-sm);cursor:pointer;border:1px solid #0000;margin-bottom:4px;padding:12px 14px;transition:all .15s}.editor-step-item:hover{background:var(--bg-card-hover)}.editor-step-item.active{background:var(--accent-light);border-color:var(--accent)}.editor-step-item-header{align-items:center;gap:10px;margin-bottom:6px;display:flex}.editor-step-badge{border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:16px;display:flex}.editor-step-badge.material{background:#3b82f626}.editor-step-badge.assessment{background:#f59e0b26}.editor-step-item-title{white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:13px;font-weight:600;overflow:hidden}.editor-step-item-actions{opacity:0;justify-content:flex-end;gap:4px;transition:opacity .15s;display:flex}.editor-step-item:hover .editor-step-item-actions,.editor-step-item.active .editor-step-item-actions{opacity:1}.editor-step-btn{background:var(--bg-input);width:24px;height:24px;color:var(--text-muted);cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;font-size:11px;transition:all .15s;display:flex}.editor-step-btn:hover{background:var(--border-light);color:var(--text-primary)}.editor-step-btn.danger:hover{color:var(--danger);background:#ef444433}.editor-step-btn:disabled{opacity:.3;cursor:not-allowed}.editor-sidebar-actions{border-top:1px solid var(--border);gap:8px;padding:12px;display:flex}.editor-main{flex-direction:column;flex:1;padding:28px;display:flex;overflow-y:auto}.editor-empty-state{color:var(--text-muted);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.editor-content-area{width:100%;max-width:860px;margin:0 auto}.editor-step-title-bar{margin-bottom:20px}.editor-step-type-label{text-transform:uppercase;letter-spacing:.5px;border-radius:20px;align-items:center;gap:6px;margin-bottom:8px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.editor-step-type-label.material{color:#3b82f6;background:#3b82f626}.editor-step-type-label.assessment{color:#f59e0b;background:#f59e0b26}.editor-step-title-input{border:none;border-bottom:2px solid var(--border);width:100%;color:var(--text-primary);letter-spacing:-.5px;background:0 0;outline:none;padding:8px 0;font-family:Inter,sans-serif;font-size:24px;font-weight:800;transition:border-color .2s}.editor-step-title-input:focus{border-color:var(--accent)}.rich-editor-wrapper{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-card);overflow:hidden}.rich-editor-toolbar{background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:4px;padding:8px 12px;display:flex}.toolbar-group{align-items:center;gap:2px;display:flex}.toolbar-divider{background:var(--border);width:1px;height:24px;margin:0 6px}.toolbar-btn{width:32px;height:32px;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;font-size:14px;transition:all .15s;display:flex}.toolbar-btn:hover{background:var(--accent-light);color:var(--text-primary)}.toolbar-select{background:var(--bg-input);border:1px solid var(--border);color:var(--text-primary);cursor:pointer;border-radius:6px;outline:none;padding:4px 8px;font-size:12px}.rich-editor-content{min-height:400px;color:var(--text-primary);outline:none;padding:24px;font-size:15px;line-height:1.8}.rich-editor-content:empty:before{content:attr(data-placeholder);color:var(--text-muted);pointer-events:none}.rich-editor-content h1{letter-spacing:-.5px;margin:20px 0 12px;font-size:28px;font-weight:800}.rich-editor-content h2{margin:18px 0 10px;font-size:22px;font-weight:700}.rich-editor-content h3{margin:16px 0 8px;font-size:18px;font-weight:600}.rich-editor-content p{margin:8px 0}.rich-editor-content ul,.rich-editor-content ol{margin:8px 0;padding-left:24px}.rich-editor-content li{margin:4px 0}.rich-editor-content a{color:var(--accent);text-decoration:underline}.rich-editor-content table{border-collapse:collapse;width:100%;margin:12px 0}.rich-editor-content td,.rich-editor-content th{border:1px solid var(--border);padding:8px 12px}.rich-editor-content th{background:var(--bg-secondary);font-weight:600}.rich-editor-content img{border-radius:8px;max-width:100%;margin:12px 0}.quiz-builder{flex-direction:column;gap:16px;display:flex}.quiz-question-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:border-color .2s}.quiz-question-card:hover{border-color:var(--border-light)}.quiz-question-header{align-items:center;gap:10px;margin-bottom:16px;display:flex}.quiz-type-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:20px;padding:3px 10px;font-size:11px;font-weight:700}.quiz-type-badge.mcq{color:#8b5cf6;background:#8b5cf626}.quiz-question-number{color:var(--text-muted);flex:1;font-size:13px;font-weight:700}.mcq-options{flex-direction:column;gap:8px;display:flex}.mcq-option-row{align-items:center;gap:10px;display:flex}.mcq-radio{width:18px;height:18px;accent-color:var(--accent);cursor:pointer;flex-shrink:0}.mcq-correct-indicator{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-weight:700;transition:all .2s;display:flex}.mcq-correct-indicator.correct{color:var(--success);background:#10b98126}.quiz-add-buttons{gap:10px;padding:16px 0;display:flex}.resource-viewer-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10000;background:#000000d9;justify-content:center;align-items:center;width:100vw;height:100vh;padding:24px;animation:.2s fadeIn;display:flex;position:fixed;top:0;left:0}.resource-viewer-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;width:90vw;max-width:960px;height:85vh;max-height:85vh;display:flex;overflow:hidden;box-shadow:0 24px 80px #00000080}.resource-viewer-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.resource-viewer-body{flex:1;justify-content:center;align-items:center;display:flex;overflow:auto}.resource-viewer-body iframe{border:none;width:100%;height:100%}.resource-viewer-body video{object-fit:contain;width:100%;max-height:100%}.resource-viewer-body img{object-fit:contain;max-width:100%;max-height:100%}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}
:root{--bk-canvas:var(--bg-card);--bk-canvas-2:var(--bg-secondary);--bk-text:var(--text-primary);--bk-muted:var(--text-muted);--bk-border:var(--border);--bk-border-2:var(--border-light);--bk-hover:var(--bg-card-hover);--bk-input:var(--bg-input);--bk-accent:var(--accent);--bk-accent-soft:var(--accent-light);--bk-danger:var(--danger);--bk-success:var(--success);--bk-shadow:var(--shadow)}[data-theme=light]{--bk-canvas:#fff;--bk-canvas-2:#f7f9fa;--bk-hover:#f4f6f8}.bk-editor{flex-direction:column;width:100%;display:flex;position:relative}.bk-edit{padding-bottom:90px}.bk-shell{align-items:flex-start;gap:24px;width:100%;max-width:1400px;margin:0 auto;display:flex}.bk-canvas{background:var(--bk-canvas);color:var(--bk-text);border:1px solid var(--bk-border);width:100%;min-width:0;max-width:1120px;min-height:360px;box-shadow:0 1px 3px var(--bk-shadow);border-radius:12px;flex:auto;margin:0 auto;padding:40px clamp(20px,5vw,64px);font-size:16px}.bk-nav{background:var(--bk-canvas);border:1px solid var(--bk-border);border-radius:12px;flex:0 0 220px;align-self:flex-start;width:220px;max-height:calc(100vh - 120px);padding:10px;position:sticky;top:12px;overflow:auto}.bk-nav-title{text-transform:uppercase;letter-spacing:.04em;color:var(--bk-muted);padding:4px 8px 8px;font-size:11px;font-weight:700}.bk-nav-list{flex-direction:column;gap:2px;display:flex}.bk-nav-item{text-align:left;width:100%;color:var(--bk-text);cursor:pointer;background:0 0;border:none;border-radius:7px;align-items:center;gap:8px;padding:6px 8px;font-size:13px;display:flex}.bk-nav-item:hover{background:var(--bk-hover)}.bk-nav-item.is-section{border-top:1px solid var(--bk-border);margin-top:6px;padding-top:8px;font-weight:700}.bk-nav-ico{width:16px;color:var(--bk-muted);text-align:center;flex-shrink:0}.bk-nav-label{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}@media (max-width:1080px){.bk-nav{display:none}}.bk-view .bk-canvas{box-shadow:none}.bk-empty{text-align:center;color:var(--bk-muted);border:2px dashed var(--bk-border);border-radius:10px;padding:60px 0;font-size:14px}.bk-block{margin:6px 0;position:relative}.bk-block-edit{border:1px solid #0000;border-radius:8px;padding:10px 12px 10px 14px;transition:border-color .12s,background .12s}.bk-block-edit:hover{border-color:var(--bk-border);background:var(--bk-hover)}.bk-block-controls{opacity:0;background:var(--bk-canvas);border:1px solid var(--bk-border);z-index:3;border-radius:6px;gap:2px;padding:2px;transition:opacity .12s;display:flex;position:absolute;top:6px;right:6px}.bk-block-edit:hover .bk-block-controls{opacity:1}.bk-block-controls button{cursor:pointer;width:26px;height:26px;color:var(--bk-text);background:0 0;border:none;border-radius:4px;font-size:13px}.bk-block-controls button:hover:not(:disabled){background:var(--bk-hover)}.bk-block-controls button:disabled{opacity:.3;cursor:default}.bk-block-controls .bk-danger{color:var(--bk-danger)}.bk-text{font-size:inherit;color:inherit;line-height:1.7}.bk-text p{margin:0 0 10px}.bk-text a{color:var(--bk-accent)}.bk-contenteditable{outline:none;min-height:28px}.bk-contenteditable:empty:before{content:attr(data-placeholder);color:var(--bk-muted)}.bk-inline-toolbar{align-items:center;gap:2px;margin-bottom:6px;display:flex}.bk-inline-toolbar button{border:1px solid var(--bk-border);background:var(--bk-canvas);cursor:pointer;min-width:28px;height:28px;color:var(--bk-text);border-radius:5px;font-size:13px}.bk-inline-toolbar button:hover,.bk-inline-toolbar button.active{background:var(--bk-hover)}.bk-tb-sep{background:var(--bk-border);width:1px;height:18px;margin:0 4px}.bk-settings-pop{background:var(--bk-canvas-2);border:1px solid var(--bk-border);border-radius:8px;flex-wrap:wrap;gap:12px;margin-bottom:8px;padding:10px 12px;display:flex}.bk-settings-pop label{color:var(--bk-muted);flex-direction:column;gap:3px;font-size:11px;font-weight:600;display:flex}.bk-settings-pop select,.bk-settings-pop input{border:1px solid var(--bk-border);background:var(--bk-input);color:var(--bk-text);border-radius:5px;padding:3px 6px;font-size:13px}.bk-settings-pop input[type=number]{width:64px}.bk-settings-pop input[type=color]{width:44px;height:26px;padding:0}.bk-list{font-size:inherit;color:inherit;padding-left:26px;line-height:1.7}.bk-list-toolbar{gap:6px;margin-bottom:8px;display:flex}.bk-list-toolbar button{border:1px solid var(--bk-border);background:var(--bk-canvas);color:var(--bk-text);cursor:pointer;border-radius:5px;padding:3px 10px;font-size:12px}.bk-list-toolbar button.active{background:var(--bk-accent);color:#fff;border-color:var(--bk-accent)}.bk-list-row{align-items:center;gap:8px;margin:4px 0;display:flex}.bk-list-marker{width:18px;color:var(--bk-muted);font-size:14px}.bk-list-row input{border:1px solid var(--bk-border);background:var(--bk-input);color:var(--bk-text);border-radius:5px;flex:1;padding:6px 8px;font-size:14px}.bk-list-row button{color:var(--bk-danger);cursor:pointer;background:0 0;border:none}.bk-list-row button:disabled{opacity:.3}.bk-add-row{border:1px dashed var(--bk-border);background:var(--bk-canvas);color:var(--bk-muted);cursor:pointer;border-radius:6px;padding:5px 10px;font-size:12px}.bk-add-row:hover{background:var(--bk-hover)}.bk-image{margin:8px 0}.bk-image img{border-radius:8px;max-width:100%;display:block}.bk-image figcaption{color:var(--bk-muted);text-align:center;margin-top:6px;font-size:13px}.bk-align-center{text-align:center}.bk-align-center img{margin:0 auto}.bk-align-right{text-align:right}.bk-align-right img{margin-left:auto}.bk-dropzone{border:2px dashed var(--bk-border);text-align:center;color:var(--bk-muted);cursor:pointer;background:var(--bk-canvas-2);border-radius:10px;padding:40px;font-size:14px}.bk-dropzone:hover{background:var(--bk-hover);border-color:var(--bk-accent)}.bk-dropzone-sm{padding:24px}.bk-image-controls{flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;display:flex}.bk-image-controls button,.bk-image-controls select{border:1px solid var(--bk-border);background:var(--bk-canvas);color:var(--bk-text);cursor:pointer;border-radius:5px;padding:5px 10px;font-size:13px}.bk-url-input{border:1px solid var(--bk-border);background:var(--bk-input);width:100%;min-width:160px;color:var(--bk-text);border-radius:5px;flex:1;margin-top:6px;padding:6px 8px;font-size:13px}.bk-err{color:var(--bk-danger);margin-top:6px;font-size:12px}.bk-video{width:100%;margin:8px 0;padding-top:56.25%;position:relative}.bk-video iframe{border:0;border-radius:8px;width:100%;height:100%;position:absolute;inset:0}.bk-fileblock{border:1px solid var(--bk-border);background:var(--bk-canvas-2);border-radius:10px;margin:8px 0;overflow:hidden}.bk-file-frame{background:#fff;border:0;width:100%;height:600px;display:block}.bk-file-bar{border-top:1px solid var(--bk-border);color:var(--bk-text);align-items:center;gap:10px;padding:10px 14px;font-size:13px;display:flex}.bk-file-bar a{color:var(--bk-accent);margin-left:auto;font-weight:600;text-decoration:none}.bk-file-icon{font-size:18px}.bk-file-msg{text-align:center;color:var(--bk-muted);padding:24px;font-size:14px}.bk-docx-scroll{background:#525659;max-height:640px;overflow:auto}.bk-docx{flex-direction:column;align-items:center;padding:16px 0;display:flex}.bk-docx .docx-wrapper{background:0 0;padding:0}.bk-docx .docx{background:#fff;margin:8px 0;box-shadow:0 2px 10px #0000004d}.bk-divider{border:none;border-top:1px solid var(--bk-border);margin:22px 0}.bk-section{color:inherit;margin:20px 0 10px;font-size:1.5em;font-weight:700}.bk-section-input{border:none;border-bottom:2px solid var(--bk-border);width:100%;color:var(--bk-text);background:0 0;outline:none;padding:6px 2px;font-size:22px;font-weight:700}.bk-section-input:focus{border-bottom-color:var(--bk-accent)}.bk-tag{text-transform:uppercase;color:var(--bk-accent);background:var(--bk-accent-soft);border-radius:20px;margin-bottom:8px;padding:3px 10px;font-size:11px;font-weight:700;display:inline-block}.bk-question-edit,.bk-question{border:1px solid var(--bk-border);background:var(--bk-canvas-2);border-radius:12px;padding:18px}.bk-q-title{border:1px solid var(--bk-border);background:var(--bk-input);width:100%;color:var(--bk-text);border-radius:6px;margin-bottom:10px;padding:8px 10px;font-size:16px;font-weight:600}.bk-q-option-edit{align-items:center;gap:8px;margin:6px 0;display:flex}.bk-q-option-edit>input:not([type=radio]){border:1px solid var(--bk-border);background:var(--bk-input);color:var(--bk-text);border-radius:6px;flex:1;padding:7px 9px;font-size:14px}.bk-q-option-edit button{color:var(--bk-danger);cursor:pointer;background:0 0;border:none}.bk-q-foot{justify-content:space-between;align-items:center;margin-top:10px;display:flex}.bk-points{color:var(--bk-muted);align-items:center;gap:6px;font-size:12px;font-weight:600;display:flex}.bk-points input{border:1px solid var(--bk-border);background:var(--bk-input);width:60px;color:var(--bk-text);border-radius:5px;padding:4px 6px}.bk-q-option-edit input[type=radio],.bk-q-option input[type=radio]{accent-color:var(--bk-accent)}.bk-q-text{color:var(--bk-text);margin-bottom:14px;font-size:17px;font-weight:600}.bk-q-options{flex-direction:column;gap:8px;margin-bottom:14px;display:flex}.bk-q-option{border:1px solid var(--bk-border);cursor:pointer;color:var(--bk-text);border-radius:8px;align-items:center;gap:10px;padding:11px 14px;font-size:15px;transition:border-color .12s,background .12s;display:flex}.bk-q-option:hover{border-color:var(--bk-accent)}.bk-q-option.selected{border-color:var(--bk-accent);background:var(--bk-accent-soft)}.bk-q-submit{background:var(--bk-accent);color:#fff;cursor:pointer;border:none;border-radius:22px;padding:10px 28px;font-size:14px;font-weight:600}.bk-q-submit:disabled{opacity:.5;cursor:default}.bk-q-submitted{color:var(--bk-success);font-size:14px;font-weight:600}.bk-q-done{border-color:color-mix(in srgb, var(--bk-success) 40%, var(--bk-border))}.bk-locked{position:relative}.bk-locked-inner{filter:blur(6px);opacity:.5;pointer-events:none;-webkit-user-select:none;user-select:none}.bk-locked-overlay{color:var(--bk-text);background:color-mix(in srgb, var(--bk-canvas) 35%, transparent);justify-content:center;align-items:center;font-size:14px;font-weight:600;display:flex;position:absolute;inset:0}.bk-score-banner{background:var(--bk-accent-soft);border:1px solid color-mix(in srgb, var(--bk-accent) 35%, transparent);color:var(--bk-text);text-align:center;border-radius:10px;margin-top:20px;padding:14px 18px;font-size:15px}.bk-functionbar{background:color-mix(in srgb, var(--bk-canvas) 92%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--bk-border);max-width:1400px;box-shadow:0 6px 24px var(--bk-shadow);z-index:20;border-radius:14px;flex-wrap:wrap;align-items:center;gap:8px;margin:16px auto 0;padding:10px 14px;display:flex;position:sticky;bottom:0;left:0;right:0}.bk-fb-label{color:var(--bk-muted);margin-right:4px;font-size:12px;font-weight:700}.bk-fb-btn{border:1px solid var(--bk-border);background:var(--bk-canvas);color:var(--bk-text);cursor:pointer;border-radius:9px;align-items:center;gap:6px;padding:7px 12px;font-size:13px;transition:all .12s;display:flex}.bk-fb-btn:hover{border-color:var(--bk-accent);color:var(--bk-accent);background:var(--bk-hover)}.bk-fb-icon{font-size:14px}.bk-item-head{background:var(--bk-canvas);border:1px solid var(--bk-border);border-radius:12px;flex-direction:column;gap:8px;max-width:1400px;margin:0 auto 16px;padding:18px 22px;display:flex}.bk-item-title-input{color:var(--bk-text);background:0 0;border:none;outline:none;width:100%;font-size:26px;font-weight:800}.bk-item-subtitle-input{color:var(--bk-text);background:0 0;border:none;outline:none;width:100%;font-size:15px}.bk-item-desc-input{color:var(--bk-text);border:1px solid var(--bk-border);resize:vertical;background:var(--bk-input);border-radius:8px;outline:none;width:100%;padding:8px 10px;font-family:inherit;font-size:14px}.bk-item-title-input::placeholder,.bk-item-subtitle-input::placeholder,.bk-item-desc-input::placeholder{color:var(--bk-muted)}.bk-note{color:var(--bk-muted);margin-top:6px;font-size:11px}.bk-embed{border:1px solid var(--bk-border);background:#fff;border-radius:10px;width:100%;margin:8px 0;position:relative;overflow:hidden}.bk-embed iframe{border:0;width:100%;height:100%;display:block}.bk-iframe-edit{flex-direction:column;display:flex}.bk-chart{color:var(--bk-text);margin:10px 0}.bk-chart-title{text-align:center;margin-bottom:10px;font-size:16px;font-weight:700}.bk-chart-svg{width:100%;height:auto;color:var(--bk-text);margin:0 auto;display:block}.bk-chart-rows{flex-direction:column;gap:4px;margin-top:12px;display:flex}.bk-flashcards{gap:14px;margin:10px 0;display:grid}.bk-flash-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.bk-flash-carousel{grid-auto-columns:minmax(150px,1fr);grid-auto-flow:column;overflow-x:auto}.bk-flashcard{aspect-ratio:1;perspective:1000px;cursor:pointer;font:inherit;background:0 0;border:none;padding:0;position:relative}.bk-flashcard-inner{transform-style:preserve-3d;transition:transform .5s;position:absolute;inset:0}.bk-flashcard.flipped .bk-flashcard-inner{transform:rotateY(180deg)}.bk-flashcard-face{backface-visibility:hidden;text-align:center;border:2px solid var(--bk-accent);background:var(--bk-canvas);color:var(--bk-text);border-radius:14px;justify-content:center;align-items:center;padding:14px;font-size:18px;font-weight:600;display:flex;position:absolute;inset:0}.bk-flashcard-back{background:var(--bk-accent-soft);transform:rotateY(180deg)}.bk-flashcard-flip{background:var(--bk-accent);color:#fff;cursor:pointer;z-index:3;border:none;border-radius:8px;justify-content:center;align-items:center;width:28px;height:28px;font-size:15px;display:flex;position:absolute;bottom:8px;right:8px}.bk-flashcard-editable .bk-flashcard-face{padding:10px}.bk-flashcard-editable .bk-flashcard-face textarea{resize:none;text-align:center;width:100%;height:100%;font:inherit;color:var(--bk-text);background:0 0;border:none;outline:none;font-size:16px;font-weight:600}.bk-flashcard-editable .bk-flashcard-back textarea{color:var(--bk-text)}.bk-flashcard-del{color:#fff;cursor:pointer;z-index:3;background:#00000040;border:none;border-radius:6px;width:24px;height:24px;font-size:12px;position:absolute;top:6px;right:6px}.bk-flashcards-toolbar{align-items:center;gap:10px;margin-bottom:12px;display:flex}.bk-flashcards-toolbar select{border:1px solid var(--bk-border);background:var(--bk-input);color:var(--bk-text);border-radius:8px;padding:6px 10px;font-size:13px}.bk-flashcards-add{background:var(--bk-accent);color:#fff;cursor:pointer;border:none;border-radius:999px;padding:7px 16px;font-size:13px;font-weight:600}.bk-labelled{margin:10px 0}.bk-labelled-stage{max-width:100%;line-height:0;display:inline-block;position:relative}.bk-labelled-stage img{border-radius:10px;max-width:100%}.bk-marker-wrap{line-height:normal;position:absolute;transform:translate(-50%,-50%)}.bk-marker{background:var(--bk-accent);color:#fff;cursor:pointer;border:2px solid #fff;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:12px;font-weight:700;display:flex;box-shadow:0 2px 6px #00000059}.bk-marker-pop{z-index:5;background:var(--bk-canvas);width:200px;color:var(--bk-text);border:1px solid var(--bk-border);box-shadow:0 6px 24px var(--bk-shadow);text-align:left;border-radius:10px;padding:10px;position:absolute;top:34px;left:50%;transform:translate(-50%)}.bk-marker-pop p{color:var(--bk-text);margin:4px 0 0;font-size:13px}.bk-marker-pop input,.bk-marker-pop textarea{border:1px solid var(--bk-border);background:var(--bk-input);width:100%;color:var(--bk-text);border-radius:6px;margin-bottom:6px;padding:5px 7px;font-family:inherit;font-size:13px}.bk-marker-pop-actions{gap:6px;display:flex}.bk-marker-pop-actions button{border:1px solid var(--bk-border);background:var(--bk-canvas);color:var(--bk-text);cursor:pointer;border-radius:6px;padding:4px 10px;font-size:12px}.bk-marker-pop-actions .bk-danger{color:var(--bk-danger)}.bk-docsettings{background:var(--bk-canvas);border:1px solid var(--bk-border);max-width:900px;box-shadow:0 6px 24px var(--bk-shadow);z-index:21;border-radius:12px;margin:0 auto;position:sticky;bottom:78px;overflow:hidden}.bk-docsettings-head{border-bottom:1px solid var(--bk-border);color:var(--bk-text);justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.bk-docsettings-head button{color:var(--bk-muted);cursor:pointer;background:0 0;border:none;font-size:14px}.bk-docsettings-body{flex-wrap:wrap;align-items:flex-end;gap:14px;padding:14px;display:flex}.bk-docsettings-body label{color:var(--bk-muted);flex-direction:column;gap:4px;font-size:11px;font-weight:600;display:flex}.bk-docsettings-body select,.bk-docsettings-body input{border:1px solid var(--bk-border);background:var(--bk-input);color:var(--bk-text);border-radius:6px;padding:5px 8px;font-size:13px}.bk-docsettings-body input[type=number]{width:70px}.bk-docsettings-body input[type=color]{width:48px;height:30px;padding:0}.bk-fb-settings{margin-left:auto}