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.nav-item:after{display:none}}@media(max-width:479px){.nav-header{padding:0 15px}.logo{font-size:20px}.mobile-menu{padding:15px}}.floating-chat-container{position:fixed;right:20px;bottom:20px;z-index:1000}.floating-chat-window{position:absolute;bottom:80px;right:0;width:340px;height:500px;background:#fff;border-radius:16px;box-shadow:0 8px 32px #00000026;overflow:hidden;display:flex;flex-direction:column}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:#4caf50;color:#fff;font-weight:500}.chat-controls{display:flex;gap:12px}.chat-controls button{background:none;border:none;color:#fff;font-size:24px;cursor:pointer;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s ease;padding:0}.chat-controls button:hover{background:#fff3}.chat-window-container{flex:1;overflow:hidden}.chat-toggle-button{display:flex;align-items:center;gap:10px;padding:12px 24px;border:none;border-radius:30px;background:#4caf50;color:#fff;cursor:pointer;font-size:16px;box-shadow:0 4px 12px #00000026;transition:all .2s ease;position:fixed;right:20px;bottom:20px;z-index:999}.chat-toggle-button:hover{box-shadow:0 6px 16px #0003}.chat-toggle-button.active{background:#388e3c}.chat-icon{font-size:24px}.chat-label{font-weight:500}@media(max-width:480px){.floating-chat-window{width:calc(100vw - 40px);height:450px;right:-20px}.chat-toggle-button .chat-label{display:none}.chat-toggle-button{padding:12px;border-radius:50%}}.chat-window-container{flex:1;overflow:hidden;display:flex;flex-direction:column}.floating-chat-content{flex:1;display:flex;flex-direction:column;height:100%}.floating-chat-content .chat-window{height:100%;display:flex;flex-direction:column}.floating-chat-content .message-list{flex:1;overflow-y:auto;padding:20px}.floating-chat-content .message-input{padding:20px;border-top:1px solid #eee;background:#fff}.loading-container{display:flex;justify-content:center;align-items:center;height:100vh;width:100%;font-size:1.2rem;color:#4caf50;position:relative}.loading-container:after{content:"";position:absolute;width:40px;height:40px;border-radius:50%;border:3px solid rgba(76,175,80,.2);border-top-color:#4caf50;animation:spin 1s linear infinite;margin-top:60px}@keyframes spin{to{transform:rotate(360deg)}}