.b64-mode-tabs{border:1px solid #e2e8f0;border-radius:10px;gap:0;margin-bottom:1.5rem;display:flex;overflow:hidden}.b64-mode-tab{color:#64748b;cursor:pointer;background:#fff;border:none;flex:1;justify-content:center;align-items:center;gap:.4rem;padding:.65rem 1rem;font-size:.9rem;font-weight:600;transition:all .2s;display:flex}.b64-mode-tab.active{color:#fff;background:#5a4ff3}.b64-mode-tab:not(.active):hover{background:#f8fafc}.b64-grid{grid-template-columns:1fr;gap:1.5rem;display:grid}@media (width>=900px){.b64-grid{grid-template-columns:1fr 1fr}}.b64-panel{background:#fff;border:1px solid #e2e8f0;border-radius:12px;flex-direction:column;display:flex;overflow:hidden}.b64-panel-header{background:#f8fafc;border-bottom:1px solid #e2e8f0;justify-content:space-between;align-items:center;padding:1rem 1.25rem;display:flex}.b64-panel-title{color:#0f172a;align-items:center;gap:.5rem;margin:0;font-size:.95rem;font-weight:700;display:flex}.b64-textarea{resize:vertical;color:#1e293b;box-sizing:border-box;background:#fff;border:none;outline:none;width:100%;min-height:220px;padding:1.25rem;font-family:Fira Code,ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.9rem;line-height:1.6}.b64-textarea::placeholder{color:#cbd5e1}.b64-stats{color:#64748b;background:#f8fafc;border-top:1px solid #e2e8f0;gap:1.5rem;padding:.6rem 1.25rem;font-size:.78rem;font-weight:500;display:flex}.b64-stat-label{color:#94a3b8}.b64-header-btn{cursor:pointer;color:#64748b;background:0 0;border:1px solid #e2e8f0;border-radius:6px;align-items:center;gap:.35rem;padding:.35rem .6rem;font-size:.8rem;font-weight:600;transition:all .2s;display:flex}.b64-header-btn:hover{color:#5a4ff3;background:#f1f5f9}.b64-header-btn.copied{color:#10b981;border-color:#10b981}.b64-error{color:#b91c1c;background:#fef2f2;border-top:1px solid #fca5a5;align-items:center;gap:.75rem;padding:.75rem 1.25rem;font-size:.85rem;font-weight:500;display:flex}.b64-dropzone{text-align:center;color:#94a3b8;cursor:pointer;border:2px dashed #e2e8f0;border-radius:12px;margin-bottom:1rem;padding:2rem;font-size:.9rem;transition:all .2s}.b64-dropzone:hover,.b64-dropzone.dragging{color:#5a4ff3;background:#faf5ff;border-color:#5a4ff3}.b64-dropzone-icon{margin-bottom:.5rem}.b64-file-input{display:none}.b64-preview-img{border:1px solid #e2e8f0;border-radius:8px;max-width:100%;max-height:200px;margin-top:1rem}.b64-data-uri-box{color:#334155;word-break:break-all;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;max-height:150px;margin-top:1rem;padding:1rem;font-family:Fira Code,monospace;font-size:.75rem;overflow-y:auto}