.chat-box{border:1px solid #ccc;border-radius:8px;height:300px;padding:10px;overflow-y:auto;margin-bottom:10px;background:#fff}.message{display:inline-block;padding:6px 10px;border-radius:10px;max-width:70%}.message.me{background:#dcf8c6;text-align:right}.message.other{background:#f1f1f1;text-align:left}.chat-input-container{display:flex;align-items:center;gap:10px}.chat-input{flex:1;padding:8px;border:1px solid #ccc;border-radius:6px;font-size:14px}.send-btn{padding:8px 12px;background:#4caf50;color:#fff;border:none;border-radius:6px;cursor:pointer;touch-action:manipulation;-webkit-user-select:none;user-select:none}.send-btn:active{background:#45a049}@media(max-width:600px){.chat-box{height:60vh}.chat-input{font-size:16px}.send-btn{padding:10px 14px;font-size:16px}}button,input{-webkit-tap-highlight-color:transparent;outline:none}