:root{--primary-color:#2563eb;--border-color:#e5e7eb;--background-color:#fff;--surface-color:#f8fafc;--text-color:#111827;--muted-color:#6b7280;--user-message:#2563eb;--assistant-message:#f1f5f9}*{box-sizing:border-box}body{color:var(--text-color);background:var(--background-color);margin:0;font-family:Inter,Arial,sans-serif}.chat-window{border:1px solid var(--border-color);border-radius:12px;flex-direction:column;height:100%;display:flex;overflow:hidden}.chat-header{border-bottom:1px solid var(--border-color);padding:16px;font-weight:600}.chat-body{flex:1;padding:20px;overflow-y:auto}.chat-message{border-radius:10px;max-width:70%;margin-bottom:10px;padding:10px 14px}.chat-message.user{background:var(--user-message);color:#fff;margin-left:auto}.chat-message.assistant{background:var(--assistant-message);margin-right:auto}.chat-input{border-top:1px solid var(--border-color);padding:10px;display:flex}.chat-input input{flex:1;padding:10px}.chat-input button{padding:10px 20px}.typing-indicator{color:var(--muted-color);font-style:italic}.response-card{border:1px solid var(--border-color);background:#fff;border-radius:12px;overflow:hidden}.card-header{border-bottom:1px solid var(--border-color);justify-content:space-between;padding:12px 16px;display:flex}.title{font-weight:600}.card-body{padding:16px;line-height:1.6}.card-footer{color:var(--muted-color);padding:10px 16px;font-size:.85rem}.engine-badge{border-radius:20px;padding:4px 10px;font-size:.75rem}.execution-card{border:1px solid var(--border-color);background:#fff;border-radius:12px}.execution-card .status{border-radius:15px;padding:4px 10px;font-size:12px}.parameters{background:#f7f7f7;margin-top:15px;padding:10px}