.messages-container{background:#e8e8e8;gap:1px;max-width:1200px;height:calc(100vh - 120px);padding:20px 0;display:flex}.messages-sidebar{background:#fff;flex-direction:column;width:350px;display:flex}.sidebar-header{border-bottom:1px solid #f2f2f2;padding:20px}.sidebar-header h2{font-size:18px;font-weight:600}.chat-list{flex:1;overflow-y:auto}.chat-item-tab{cursor:pointer;border-bottom:1px solid #f9f9f9;gap:12px;padding:15px 20px;transition:background .2s;display:flex}.chat-item-tab:hover{background:#f8f8f8}.chat-item-tab.active{border-left:4px solid var(--primary-color);background:#fff5f2}.chat-avatar{background:#eee;border-radius:50%;flex-shrink:0;width:48px;height:48px}.chat-preview-info{flex:1;overflow:hidden}.chat-top-row{justify-content:space-between;margin-bottom:4px;display:flex}.chat-user-name{color:#333;font-size:14px;font-weight:600}.chat-time{color:#999;font-size:12px}.chat-last-msg{color:#666;white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.messages-main{background:#fff;flex-direction:column;flex:1;display:flex}.messages-header{border-bottom:1px solid #f2f2f2;justify-content:space-between;align-items:center;padding:15px 20px;display:flex}.header-user-info{align-items:center;gap:10px;display:flex}.item-context-bar{background:#fdfdfd;border-bottom:1px solid #f2f2f2;align-items:center;gap:12px;padding:10px 20px;display:flex}.context-img{background:#eee;border-radius:4px;width:40px;height:40px}.context-details{flex:1}.context-title{font-size:14px;font-weight:500}.context-price{color:var(--primary-color);font-size:13px;font-weight:600}.messages-body{background:#fafafa;flex-direction:column;flex:1;gap:15px;padding:20px;display:flex;overflow-y:auto}.msg-bubble{border-radius:8px;max-width:70%;padding:10px 15px;font-size:14px;line-height:1.5;position:relative}.msg-bubble.received{color:#333;background:#fff;border:1px solid #e8e8e8;align-self:flex-start}.msg-bubble.sent{color:#333;background:#feecea;border:1px solid #fcdbd6;align-self:flex-end}.msg-timestamp{color:#999;margin-top:4px;font-size:10px;display:block}.messages-input-area{border-top:1px solid #f2f2f2;padding:20px}.input-wrapper{background:#f8f8f8;border-radius:8px;gap:10px;padding:10px;display:flex}.msg-input{background:0 0;border:none;outline:none;flex:1;padding:5px;font-size:14px}.btn-send-msg{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:4px;padding:8px 20px;font-weight:500}.messages-right-sidebar{background:#fff;border-left:1px solid #f2f2f2;width:280px;padding:20px}.safety-tips-box{background:#fff9f0;border:1px solid #ffe7c4;border-radius:8px;padding:15px}.safety-tips-box h3{color:#855d14;align-items:center;gap:6px;margin-bottom:10px;font-size:14px;display:flex}.safety-tips-box ul{color:#666;font-size:12px;line-height:1.6;list-style:none}.safety-tips-box li{gap:6px;margin-bottom:8px;display:flex}