.tool-tab{border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;border-radius:8px;align-items:center;gap:6px;padding:8px 16px;font-family:inherit;font-size:13px;font-weight:500;display:flex}.tool-tab:hover:not(:disabled){border-color:var(--color-accent);color:var(--color-text)}.tool-tab.active{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.tool-drop-zone{border:2px dashed var(--color-border);background:var(--color-surface);cursor:pointer;min-height:200px;transition:all var(--transition-normal);text-align:center;border-radius:16px;justify-content:center;align-items:center;padding:40px 24px;display:flex}.tool-drop-zone:hover{border-color:var(--color-accent);background:#fafafa}.tool-drop-zone.dragover{border-color:var(--color-accent);background:#f0f9ff;border-style:solid;transform:scale(1.01)}.tool-file-item{background:var(--color-surface);border:1px solid var(--color-border);transition:all var(--transition-fast);border-radius:10px;align-items:center;gap:12px;padding:12px 16px;display:flex}.tool-file-item:hover{box-shadow:var(--shadow-sm)}.tool-file-item .file-thumb{object-fit:cover;background:#f0f0f0;border-radius:6px;flex-shrink:0;width:48px;height:48px}.tool-file-item .file-info{flex:1;min-width:0}.tool-file-item .file-name{white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.tool-file-item .file-meta{color:var(--color-text-muted);gap:12px;margin-top:2px;font-size:12px;display:flex}.tool-file-item .file-saved{color:#15803d;font-weight:600}.tool-file-item .file-actions{flex-shrink:0;gap:6px;display:flex}.tool-file-item .progress-bar{background:var(--color-border);border-radius:2px;width:100%;height:4px;margin-top:6px;overflow:hidden}.tool-file-item .progress-bar .fill{background:var(--color-accent);border-radius:2px;height:100%;transition:width .3s}@media (width<=640px){.tool-file-item{flex-wrap:wrap}.tool-file-item .file-actions{justify-content:flex-end;width:100%;margin-top:8px}}