.fsl-tool{margin-bottom:2rem;}
.fsl-card{--fsl-border:var(--border,#e5e7eb);--fsl-bg:var(--surface,#fff);--fsl-muted:var(--text-muted,#6b7280);--fsl-accent:var(--primary,#2563eb);--fsl-accent-hover:var(--primary-dark,#1d4ed8);--fsl-success:#059669;--fsl-surface:var(--surface-muted,#f9fafb);background:var(--fsl-bg);border:1px solid var(--fsl-border);border-radius:16px;box-shadow:0 1px 3px rgba(0,0,0,0.06);overflow:hidden;}
.fsl-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:140px;padding:1.5rem;background:var(--fsl-surface);border-bottom:2px dashed var(--fsl-border);cursor:pointer;transition:background 0.2s,border-color 0.2s;}
.fsl-drop:hover,.fsl-drop:focus-visible{background:rgba(37,99,235,0.04);border-color:var(--fsl-accent);outline:none;}
.fsl-drop.fsl-dragover{background:rgba(5,150,105,0.08);border-color:var(--fsl-success);}
.fsl-file-input{position:absolute;width:0;height:0;opacity:0;pointer-events:none;}
.fsl-drop-icon{width:40px;height:40px;margin-bottom:0.75rem;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12'%3E%3C/path%3E%3C/svg%3E") center/contain no-repeat;}
.fsl-drop:hover .fsl-drop-icon,.fsl-drop:focus-visible .fsl-drop-icon{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%232563eb'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12'%3E%3C/path%3E%3C/svg%3E");}
.fsl-drop-text{font-size:1rem;font-weight:600;color:var(--text-main,#111827);}
.fsl-drop-hint{font-size:0.8125rem;color:var(--fsl-muted);margin-top:0.25rem;}
.fsl-paste{padding:1rem 1.5rem;border-bottom:1px solid var(--fsl-border);}
.fsl-paste-label{display:block;font-size:0.875rem;font-weight:600;color:var(--text-main,#111827);margin-bottom:0.5rem;}
.fsl-textarea{width:100%;padding:0.75rem 1rem;font-size:0.9375rem;font-family:ui-monospace,monospace;line-height:1.5;border:1px solid var(--fsl-border);border-radius:10px;background:var(--fsl-bg);resize:vertical;transition:border-color 0.2s;}
.fsl-textarea:focus{outline:none;border-color:var(--fsl-accent);box-shadow:0 0 0 2px rgba(37,99,235,0.15);}
.fsl-textarea::placeholder{color:var(--fsl-muted);}
.fsl-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0.5rem;padding:1rem 1.5rem;border-bottom:1px solid var(--fsl-border);background:var(--fsl-surface);}
.fsl-stat{display:flex;flex-direction:column;align-items:center;padding:0.75rem;background:var(--fsl-bg);border:1px solid var(--fsl-border);border-radius:10px;}
.fsl-stat-val{font-size:1.25rem;font-weight:700;color:var(--fsl-accent);line-height:1.2;}
.fsl-stat-lbl{font-size:0.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--fsl-muted);margin-top:0.25rem;}
.fsl-hidden{display:none;}
.fsl-settings{display:grid;gap:1rem;padding:1.25rem 1.5rem;border-bottom:1px solid var(--fsl-border);}
@media (min-width:640px){.fsl-settings{grid-template-columns:repeat(3,1fr);}}
.fsl-setting{display:flex;flex-direction:column;gap:0.375rem;}
.fsl-label{font-size:0.875rem;font-weight:600;color:var(--text-main,#111827);}
.fsl-input,.fsl-select{width:100%;padding:0.625rem 0.875rem;font-size:0.9375rem;border:1px solid var(--fsl-border);border-radius:8px;background:var(--fsl-bg);}
.fsl-input:focus,.fsl-select:focus{outline:none;border-color:var(--fsl-accent);}
.fsl-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 0.5rem center;background-size:1.25rem;padding-right:2rem;}
.fsl-hint{font-size:0.75rem;color:var(--fsl-muted);}
.fsl-opts{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:0.75rem 1.5rem;}
.fsl-check{display:inline-flex;align-items:center;gap:0.5rem;font-size:0.875rem;color:var(--text-main,#111827);cursor:pointer;}
.fsl-check-input{position:absolute;width:0;height:0;opacity:0;}
.fsl-check-box{width:20px;height:20px;flex-shrink:0;border:2px solid var(--fsl-border);border-radius:6px;background:var(--fsl-bg);transition:border-color 0.2s,background 0.2s;}
.fsl-check-input:checked+.fsl-check-box{border-color:var(--fsl-accent);background:var(--fsl-accent);}
.fsl-check-input:focus-visible+.fsl-check-box{outline:2px solid var(--fsl-accent);outline-offset:2px;}
.fsl-actions{display:flex;flex-wrap:wrap;gap:0.75rem;padding:1.25rem 1.5rem;border-bottom:1px solid var(--fsl-border);}
.fsl-btn{padding:0.75rem 1.25rem;font-size:0.9375rem;font-weight:600;border-radius:10px;border:none;cursor:pointer;transition:background 0.2s,color 0.2s;}
.fsl-btn-primary{background:var(--fsl-accent);color:#fff;}
.fsl-btn-primary:hover:not(:disabled){background:var(--fsl-accent-hover);}
.fsl-btn-primary:disabled{opacity:0.5;cursor:not-allowed;}
.fsl-btn-secondary{background:var(--fsl-surface);color:var(--text-main,#111827);border:1px solid var(--fsl-border);}
.fsl-btn-secondary:hover{background:var(--fsl-border);}
.fsl-progress{padding:1rem 1.5rem;border-bottom:1px solid var(--fsl-border);}
.fsl-progress-track{height:8px;background:var(--fsl-border);border-radius:4px;overflow:hidden;}
.fsl-progress-fill{height:100%;background:var(--fsl-success);border-radius:4px;transition:width 0.3s ease;}
.fsl-progress-txt{display:block;font-size:0.8125rem;font-weight:600;color:var(--fsl-muted);margin-top:0.5rem;text-align:center;}
.fsl-results{padding:1.25rem 1.5rem;}
.fsl-results-head{font-size:1.125rem;font-weight:700;color:var(--text-main,#111827);margin:0 0 1rem 0;}
.fsl-chunks{display:flex;flex-direction:column;gap:0.75rem;}
.fsl-chunk{display:flex;flex-wrap:wrap;align-items:center;gap:0.75rem;padding:1rem;background:var(--fsl-surface);border:1px solid var(--fsl-border);border-radius:12px;}
.fsl-chunk-info{flex:1;min-width:0;}
.fsl-chunk-name{font-size:0.9375rem;font-weight:600;color:var(--text-main,#111827);word-break:break-all;}
.fsl-chunk-meta{font-size:0.8125rem;color:var(--fsl-muted);margin-top:0.25rem;}
.fsl-chunk-acts{display:flex;gap:0.5rem;}
.fsl-chunk .fsl-btn{padding:0.5rem 0.875rem;font-size:0.8125rem;}
.fsl-preview{width:100%;margin-top:0.75rem;padding:0.75rem;font-size:0.75rem;font-family:ui-monospace,monospace;line-height:1.5;background:#1f2937;color:#e5e7eb;border-radius:8px;max-height:160px;overflow-y:auto;white-space:pre-wrap;word-break:break-all;}
@media (max-width:639px){.fsl-stats{grid-template-columns:repeat(2,1fr);}.fsl-actions{flex-direction:column;}.fsl-btn{width:100%;}}
@media (prefers-reduced-motion:reduce){.fsl-progress-fill,.fsl-drop,.fsl-btn{transition-duration:0.01ms;}}