/* 站内即时客服 - 前台访客端（微信式） */
#yc-chat-btn{position:fixed;right:20px;bottom:30px;z-index:10001;cursor:pointer;
  background:#eb6446;color:#fff;border-radius:8px;padding:10px 14px;
  box-shadow:0 2px 8px rgba(0,0,0,0.25);font-size:14px;line-height:20px;white-space:nowrap;}
#yc-chat-btn:hover{background:#d9533a;}
#yc-chat-btn .yc-chat-btn-icon{display:inline-block;width:20px;height:20px;vertical-align:-4px;margin-right:6px;
  background:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M20 2H4a2 2 0 0 0-2 2v18l4-4h14a2 2 0 0 0 2-2V4a2 2 0 0 0-2-2z'/%3E%3C/svg%3E") no-repeat center;background-size:contain;}
#yc-chat-panel{position:fixed;right:20px;bottom:90px;z-index:10002;width:380px;max-width:calc(100vw - 40px);
  height:520px;max-height:calc(100vh - 160px);background:#ededed;border-radius:10px;
  box-shadow:0 4px 20px rgba(0,0,0,0.3);display:flex;flex-direction:column;overflow:hidden;}
.yc-chat-head{background:#ededed;color:#000;font-size:16px;font-weight:600;text-align:center;padding:12px 40px;position:relative;border-bottom:1px solid #d9d9d9;}
#yc-chat-close{position:absolute;right:12px;top:8px;cursor:pointer;font-size:22px;line-height:22px;color:#666;}
.yc-chat-body{flex:1;overflow-y:auto;padding:14px 12px;-webkit-overflow-scrolling:touch;}
.yc-chat-welcome{background:#fff;border-radius:6px;padding:9px 12px;font-size:14px;color:#333;margin-bottom:12px;line-height:22px;box-shadow:0 1px 1px rgba(0,0,0,0.06);}
/* 微信式消息 */
.yc-msg{display:flex;margin-bottom:12px;align-items:flex-start;}
.yc-msg .yc-avatar{width:38px;height:38px;border-radius:5px;flex:none;font-size:14px;color:#fff;display:flex;align-items:center;justify-content:center;background:#7b9cc4;margin-right:9px;overflow:hidden;}
.yc-msg.mine{flex-direction:row-reverse;}
.yc-msg.mine .yc-avatar{background:#e06a4a;margin-right:0;margin-left:9px;}
.yc-msg-main{min-width:0;max-width:75%;}
.yc-msg-nick{font-size:12px;color:#999;margin-bottom:3px;}
.yc-msg.mine .yc-msg-nick{text-align:right;}
.yc-msg-nick span{font-size:11px;color:#bbb;}
.yc-msg-text{display:inline-block;padding:9px 12px;border-radius:6px;font-size:15px;line-height:23px;word-break:break-all;position:relative;box-shadow:0 1px 1px rgba(0,0,0,0.06);}
.yc-msg:not(.mine) .yc-msg-text{background:#ffffff;color:#000;}
.yc-msg:not(.mine) .yc-msg-text:before{content:"";position:absolute;left:-5px;top:13px;width:0;height:0;border:6px solid transparent;border-right-color:#fff;border-left:0;}
.yc-msg.mine{text-align:right;}
.yc-msg.mine .yc-msg-text{background:#95ec69;color:#000;text-align:left;}
.yc-msg.mine .yc-msg-text:before{content:"";position:absolute;right:-5px;top:13px;width:0;height:0;border:6px solid transparent;border-left-color:#95ec69;border-right:0;}
/* 底部输入区 */
.yc-chat-nick{padding:8px 10px 0 10px;background:#f7f7f7;}
.yc-chat-nick input{width:100%;border:1px solid #dcdcdc;border-radius:6px;padding:8px 10px;font-size:14px;background:#fff;outline:none;}
.yc-chat-input{position:relative;display:flex;align-items:flex-end;padding:8px;background:#f7f7f7;border-top:1px solid #d9d9d9;}
#yc-chat-emoji-btn{flex:none;background:transparent;border:none;font-size:26px;line-height:1;padding:6px 8px;cursor:pointer;}
#yc-chat-text{flex:1;min-width:0;border:1px solid #dcdcdc;border-radius:6px;padding:9px 10px;font-size:15px;line-height:20px;height:42px;resize:none;background:#fff;outline:none;font-family:inherit;}
#yc-chat-text:focus{border-color:#b5b5b5;}
#yc-chat-send{flex:none;margin-left:8px;background:#07c160;color:#fff;border:none;border-radius:6px;padding:0 20px;height:42px;font-size:15px;cursor:pointer;}
#yc-chat-send:disabled{background:#a9d9b8;}
/* 表情选择器 */
#yc-chat-emoji-panel{position:absolute;left:0;right:0;bottom:100%;background:#fff;border-top:1px solid #e0e0e0;padding:8px;box-shadow:0 -2px 10px rgba(0,0,0,0.08);z-index:5;}
#yc-chat-emoji-panel .yc-emoji-grid{max-height:160px;overflow-y:auto;}
#yc-chat-emoji-panel .yc-emoji-grid span{display:inline-block;width:12.5%;font-size:24px;line-height:38px;text-align:center;cursor:pointer;box-sizing:border-box;}
#yc-chat-emoji-panel .yc-emoji-grid span:active{background:#f0f0f0;border-radius:6px;}
/* 手机：窗口放大，输入更友好 */
@media screen and (max-width:768px){
  #yc-chat-btn{right:12px;bottom:70px;padding:8px 10px;font-size:13px;}
  #yc-chat-panel{left:0;right:0;top:0;bottom:0;width:100%;height:100%;max-width:none;max-height:none;border-radius:0;}
  .yc-msg-text{font-size:16px;line-height:24px;}
  #yc-chat-text{font-size:16px;}
}