.app-container{display:flex;width:100%;height:100vh;position:relative}.hamburger-button{position:fixed;top:4px;left:10px;width:40px;height:40px;background:#fff;color:#667eea;border:2px solid #667eea;border-radius:8px;font-size:20px;cursor:pointer;z-index:1002;display:none;align-items:center;justify-content:center;box-shadow:0 2px 8px #0003}.sidebar-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:999;display:none}.sidebar-wrapper{position:relative;transition:transform .3s ease-in-out;z-index:1000}.chat-input-container textarea{scrollbar-width:none;-ms-overflow-style:none}.chat-input-container textarea::-webkit-scrollbar{display:none}@media (max-width: 768px){.hamburger-button{display:flex}.sidebar-overlay.open{display:block}.sidebar-wrapper{position:fixed;top:0;left:0;height:100vh;box-shadow:2px 0 10px #0000004d;transform:translate(-100%)}.sidebar-wrapper.open{transform:translate(0)}.mobile-title-bar{display:flex!important;padding-left:60px!important}.sidebar-header h2{display:none}.chat-room-container{height:100vh!important;padding-top:0;box-sizing:border-box;display:flex;flex-direction:column}.chat-header{position:fixed;top:0;left:0;right:0;padding:8px 20px 8px 60px!important;z-index:100;background:#fff;box-sizing:border-box}.chat-messages-area{position:fixed;top:56px;left:0;right:0;bottom:60px;overflow-y:auto;-webkit-overflow-scrolling:touch;margin:0;padding:15px 15px 8px}.chat-messages-area .message-bubble{font-size:13px;line-height:1.4;margin-bottom:8px}.chat-messages-area .message-time{font-size:10px}.chat-messages-area .message-sender{font-size:11px;margin-bottom:3px}.chat-input-container{position:fixed;bottom:0;left:0;right:0;z-index:100}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f0f2f5}#root{width:100%;height:100vh}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#888;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}