.playground-shell{height:100%;overflow:hidden;background:#f5f7fb;color:#1f1f1f}.playground-layout{display:flex;height:100%;width:100%;overflow:hidden}.playground-chat-panel{width:38%;min-width:360px;max-width:520px;height:100%;min-height:0;display:flex;flex-direction:column;overflow:hidden;border-right:1px solid #e8e8e8;background:#fff}.playground-chat-header{flex-shrink:0;padding:20px 20px 12px;border-bottom:1px solid #f0f0f0}.playground-chat-body{flex:1;min-height:0;overflow-y:auto;padding:16px 20px}.playground-chat-footer{flex-shrink:0;padding:16px 20px 20px;border-top:1px solid #f0f0f0;background:#fff}.playground-chat-footer.drag-over{background:#f6ffed;outline:2px dashed #95de64;outline-offset:-6px}.dialog-message-images{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.dialog-message-images img{width:96px;height:96px;object-fit:cover;border-radius:8px;border:1px solid rgba(0,0,0,.08)}.playground-preview-panel{flex:1;height:100%;min-height:0;min-width:0;display:flex;flex-direction:column;overflow:hidden;background:#fafafa}.playground-preview-header{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid #e8e8e8;background:#fff;flex-wrap:wrap}.playground-preview-body{flex:1;min-height:0;padding:20px;overflow:auto}.playground-preview-canvas{min-height:100%;box-sizing:border-box;border:2px dashed #d9d9d9;border-radius:12px;background:#fff;padding:24px;text-align:left}.playground-preview-empty{min-height:100%;display:flex;align-items:center;justify-content:center;color:#8c8c8c;text-align:center;padding:24px;box-sizing:border-box}.playground-preview-canvas.pick-mode{-webkit-user-select:none;user-select:none}.playground-preview-canvas.pick-mode [data-a2ui-component-id]{cursor:pointer}.playground-preview-canvas.pick-mode [data-a2ui-component-id]:hover{outline:2px solid #1677ff;outline-offset:2px}.playground-preview-canvas.pick-mode [data-a2ui-component-id].a2ui-preview-selected{outline:2px solid #52c41a;outline-offset:2px}.dialog-bubble{max-width:92%;margin-bottom:12px;padding:10px 14px;border-radius:10px;white-space:pre-wrap;word-break:break-word}.dialog-bubble-user{margin-left:auto;background:#e6f4ff;border:1px solid #91caff}.dialog-bubble-assistant{background:#f6ffed;border:1px solid #b7eb8f}.dialog-bubble-system{background:#fafafa;border:1px solid #d9d9d9;color:#595959}.dialog-bubble-pending{opacity:.95}.dialog-pending-content{display:flex;align-items:center;gap:8px}.scene-block{margin-top:16px;padding-top:16px;border-top:1px solid #f0f0f0}.attachment-preview-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.attachment-preview-item{position:relative;width:72px;height:72px;border-radius:8px;overflow:hidden;border:1px solid #d9d9d9;background:#fafafa}.attachment-preview-item img{width:100%;height:100%;object-fit:cover}.attachment-preview-item button{position:absolute;top:2px;right:2px;min-width:24px;width:24px;height:24px;padding:0;background:#ffffffe6}.playground-login-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,#f5f7fb,#eef2ff)}.playground-login-card{width:100%;max-width:420px;box-shadow:0 12px 40px #0f172a14}html,body,#root{height:100%;margin:0;overflow:hidden}