:root{--bfa-primary:var(--main-primary);--bfa-text:#1e293b;--bfa-text-muted:#64748b;--bfa-bg:#fff;--bfa-bg-secondary:#f8fafc;--bfa-border:#e2e8f0;--bfa-border-hover:#cbd5e1;--bfa-canvas-bg:#1a1a2e;--bfa-toolbar-bg:#fff;--bfa-toolbar-border:#e2e8f0;--bfa-radius:var(--main-radius);--bfa-radius-lg:var(--main-radius-lg);--bfa-region-border:#6366f1cc;--bfa-region-fill:#6366f126}._bfa-container{flex-direction:column;min-height:70vh;display:flex}._bfa-editor{flex-direction:column;flex:1;min-height:70vh;display:flex}@media (max-width:768px){._bfa-container{padding-left:1rem;padding-right:1rem}}._bfa-upload{cursor:pointer;justify-content:center;align-items:center;min-height:50vh;display:flex}._bfa-upload-inner{align-items:center;gap:var(--main-space-4);padding:var(--main-space-12) var(--main-space-8);border-style:dashed;border-width:2px;border-color:var(--bfa-border);border-radius:var(--bfa-radius-lg);background:var(--bfa-bg);flex-direction:column;width:100%;max-width:480px;transition:border-color .2s;display:flex}._bfa-upload:hover ._bfa-upload-inner,._bfa-upload.is-dragover ._bfa-upload-inner{border-color:var(--bfa-primary)}._bfa-upload.is-dragover ._bfa-upload-inner{background:var(--bfa-bg-secondary)}._bfa-upload-icon{color:var(--bfa-text-muted);opacity:.5}._bfa-upload-text{font-size:var(--main-text-base);color:var(--bfa-text);text-align:center;font-weight:500}._bfa-upload-hint{font-size:var(--main-text-sm);color:var(--bfa-text-muted)}._bfa-toolbar{justify-content:space-between;align-items:center;gap:var(--main-space-3);padding:var(--main-space-2) var(--main-space-4);background:var(--bfa-toolbar-bg);border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--bfa-toolbar-border);flex-wrap:wrap;display:flex}._bfa-toolbar-left,._bfa-toolbar-right{align-items:center;gap:var(--main-space-2);display:flex}._bfa-btn{align-items:center;gap:var(--main-space-2);border-radius:var(--bfa-radius);font-size:var(--main-text-sm);cursor:pointer;color:var(--bfa-text);white-space:nowrap;background:0 0;border-style:none;border-width:0;padding:.5rem .75rem;font-weight:500;transition:opacity .15s,background .15s;display:inline-flex}._bfa-btn:hover{opacity:.85}._bfa-btn:disabled{opacity:.35;cursor:not-allowed}._bfa-btn-ghost{color:var(--bfa-text-muted)}._bfa-btn-ghost:hover:not(:disabled){color:var(--bfa-text);background:var(--bfa-bg-secondary)}._bfa-btn-ghost.is-active{color:var(--bfa-primary);background:#6366f114}._bfa-btn-primary{background:var(--bfa-primary);color:#fff;box-shadow:0 2px 8px #6366f140}._bfa-btn-primary:hover{opacity:.9}._bfa-btn-group{gap:2px;display:inline-flex}._bfa-divider{background:var(--bfa-border);width:1px;height:20px;margin:0 var(--main-space-1)}._bfa-select{border-radius:var(--bfa-radius);border-style:solid;border-width:1px;border-color:var(--bfa-border);background:var(--bfa-bg);color:var(--bfa-text);font-size:var(--main-text-sm);cursor:pointer;padding:.375rem .5rem}._bfa-output-controls{align-items:center;gap:var(--main-space-3);display:flex}._bfa-quality-group{align-items:center;gap:var(--main-space-2);display:flex}._bfa-quality-label{font-size:var(--main-text-xs);color:var(--bfa-text-muted);white-space:nowrap}._bfa-quality-val{font-size:var(--main-text-xs);color:var(--bfa-text-muted);text-align:right;min-width:2rem}._bfa-intensity-group{align-items:center;gap:var(--main-space-2);display:flex}._bfa-intensity-label{font-size:var(--main-text-xs);color:var(--bfa-text-muted);white-space:nowrap}._bfa-intensity-val{font-size:var(--main-text-xs);color:var(--bfa-text-muted);text-align:right;min-width:1.5rem}._bfa-range-sm{cursor:pointer;width:80px;accent-color:var(--bfa-primary)}._bfa-btn-link{color:var(--bfa-primary);font-size:var(--main-text-xs);cursor:pointer;background:0 0;border-style:none;border-width:0;padding:0}._bfa-btn-link:hover{opacity:.8}@media (max-width:768px){._bfa-toolbar{padding:var(--main-space-2);gap:var(--main-space-2)}._bfa-btn-label,._bfa-quality-group,._bfa-intensity-group{display:none}._bfa-output-controls{gap:var(--main-space-2)}._bfa-divider{display:none}}._bfa-canvas-area{background:var(--bfa-canvas-bg);flex-direction:column;flex:1;justify-content:center;align-items:center;min-height:300px;display:flex;position:relative;overflow:hidden}._bfa-canvas-wrapper{cursor:crosshair;-webkit-user-select:none;user-select:none;line-height:0;display:inline-block;position:relative}._bfa-canvas-wrapper>canvas{max-width:100%;max-height:100%}#_bfa-canvas-overlay{pointer-events:auto;width:100%;height:100%;position:absolute;top:0;left:0}._bfa-hint{bottom:var(--main-space-4);text-align:center;width:300px;font-size:var(--main-text-xs);color:#fff9;pointer-events:none;margin-left:-150px;transition:opacity .3s;position:absolute;left:50%}._bfa-hint.is-hidden{opacity:0}@media (max-width:768px){._bfa-canvas-area{min-height:200px;max-height:55vh}}._bfa-status-bar{justify-content:center;align-items:center;gap:var(--main-space-2);padding:var(--main-space-2) var(--main-space-4);background:var(--bfa-toolbar-bg);border-top-style:solid;border-top-width:1px;border-top-color:var(--bfa-toolbar-border);font-size:var(--main-text-xs);color:var(--bfa-text-muted);display:flex}._bfa-status-sep{color:var(--bfa-border)}