/* 白穆 · 在线洽谈 —— 纸面文人风，与主站一致 */
:root{
  --bg:#F7F4EC; --bg2:#F1ECDF; --card:#FDFBF6;
  --line:#E3DDCD; --line2:#C9C0AA;
  --txt:#2A2721; --sub:#8A8375; --dim2:#4A4538;
  --red:#A5422F; --red-soft:rgba(165,66,47,.09);
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  display:flex;align-items:center;justify-content:center;padding:14px;
  line-height:1.75;
}
::selection{background:rgba(165,66,47,.15)}
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:var(--bg2)}
::-webkit-scrollbar-thumb{background:#C9C0AA;border-radius:5px}
.shell{
  width:min(680px,100%);height:min(760px,94vh);
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  display:flex;flex-direction:column;overflow:hidden;
  box-shadow:0 14px 40px rgba(74,69,56,.10);
}
header{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 16px;border-bottom:1px solid var(--line);flex-shrink:0;
  background:rgba(247,244,236,.7);
}
.who{display:flex;align-items:center;gap:11px}
.avatar{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:17px;color:#fff;background:var(--red);letter-spacing:0;
}
.who-txt b{font-size:15.5px;letter-spacing:1px;display:block}
.who-txt i{font-style:normal;font-size:12px;color:var(--sub)}
.pay-entry,.tool-btn{
  cursor:pointer;font-size:13px;color:var(--dim2);padding:6px 13px;border-radius:999px;
  border:1px solid var(--line2);background:transparent;transition:.15s;letter-spacing:1px;
}
.pay-entry:hover,.tool-btn:hover{color:var(--red);border-color:var(--red)}
.hdr-tools{display:flex;gap:8px;align-items:center}
main{flex:1;overflow-y:auto;padding:18px 16px 8px;scroll-behavior:smooth}
.hint{text-align:center;color:var(--sub);font-size:12.5px;margin:6px 0 14px}
.day{text-align:center;font-size:11.5px;color:var(--sub);margin:14px 0;position:relative}
.day::before,.day::after{content:"";display:inline-block;width:56px;height:1px;background:var(--line);vertical-align:middle;margin:0 10px}
.msg{display:flex;gap:9px;margin-bottom:14px;align-items:flex-end}
.msg.me{flex-direction:row-reverse}
.msg .bub{
  max-width:74%;padding:9px 13px;border-radius:11px;font-size:14.5px;line-height:1.75;
  word-break:break-word;white-space:pre-wrap;
}
.msg.guest .bub{background:#F6E8E2;border:1px solid rgba(165,66,47,.22);border-bottom-right-radius:3px;color:var(--txt)}
.msg .mini{
  width:24px;height:24px;border-radius:50%;flex-shrink:0;align-self:flex-end;margin-bottom:2px;
  display:flex;align-items:center;justify-content:center;font-size:11.5px;font-weight:700;color:#fff;
  background:var(--red);
}
.msg.owner .bub{background:#fff;border:1px solid var(--line);border-bottom-left-radius:3px}
.msg .bub img{max-width:230px;max-height:230px;border-radius:8px;display:block;cursor:zoom-in;border:1px solid var(--line)}
.msg .meta{font-size:11px;color:var(--sub);margin:0 4px 3px;flex-shrink:0}
.msg.err .bub{background:#F9E9E7;border-color:rgba(165,66,47,.35);color:var(--red);font-size:13px}
footer{padding:11px 14px 13px;border-top:1px solid var(--line);flex-shrink:0;background:rgba(247,244,236,.7)}
#nick{
  width:100%;margin-bottom:8px;padding:7px 12px;font-size:13.5px;
  border-radius:8px;border:1px solid var(--line);outline:none;
  background:#fff;color:var(--txt);
}
#nick:focus{border-color:var(--line2)}
.tools-row{display:flex;gap:4px;margin-bottom:6px}
.tool-ico{
  cursor:pointer;font-size:16px;line-height:1;padding:4px 7px;border-radius:7px;color:var(--sub);
  background:transparent;border:none;transition:.15s;
}
.tool-ico:hover{color:var(--red);background:var(--red-soft)}
.input-row{display:flex;gap:9px;align-items:flex-end}
#input{
  flex:1;resize:none;max-height:110px;padding:9px 13px;font-size:14.5px;line-height:1.6;
  border-radius:10px;border:1px solid var(--line);outline:none;
  background:#fff;color:var(--txt);font-family:inherit;
}
#input:focus{border-color:var(--line2)}
#btnSend{
  padding:9px 20px;font-size:14px;font-weight:600;border-radius:10px;cursor:pointer;
  border:1px solid var(--red);color:var(--red);background:transparent;transition:.15s;letter-spacing:2px;
}
#btnSend:hover:not(:disabled){background:var(--red);color:#fff}
#btnSend:disabled{opacity:.4;cursor:default}
@media (max-width:520px){
  body{padding:0}
  .shell{width:100%;height:100vh;height:100dvh;border-radius:0;border:none}
}
/* 表情面板 */
.emoji-panel{
  display:none;position:absolute;bottom:96px;left:14px;z-index:40;
  width:264px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 10px 30px rgba(74,69,56,.14);flex-wrap:wrap;gap:2px;
}
.emoji-panel.show{display:flex}
.emoji-panel button{
  font-size:19px;padding:5px;border:none;background:transparent;border-radius:7px;cursor:pointer;
}
.emoji-panel button:hover{background:var(--red-soft)}
/* 收款弹窗 */
.mask{
  position:fixed;inset:0;background:rgba(42,39,33,.42);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;z-index:50;padding:18px;
}
.mask.show{display:flex}
.pay-dialog{
  width:min(400px,94vw);background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:26px 22px 20px;position:relative;
  box-shadow:0 18px 50px rgba(74,69,56,.2);
}
.pay-close{
  position:absolute;top:12px;right:13px;width:29px;height:29px;border-radius:8px;cursor:pointer;
  border:1px solid var(--line);background:transparent;color:var(--sub);font-size:14px;
}
.pay-close:hover{color:var(--red);border-color:var(--red)}
.pay-title{text-align:center;font-size:18px;font-weight:700;letter-spacing:2px}
.pay-tabs{display:flex;gap:9px;margin:17px 0 15px}
.ptab{
  flex:1;text-align:center;padding:9px 0;border-radius:9px;cursor:pointer;
  font-size:13.5px;font-weight:600;border:1px solid var(--line);color:var(--sub);transition:.15s;
}
.ptab.on{color:#fff;background:var(--red);border-color:var(--red)}
.pay-qr{
  width:min(280px,76vw);aspect-ratio:1/1;margin:0 auto;border-radius:10px;overflow:hidden;
  background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
}
.pay-qr img{width:100%;height:100%;object-fit:contain}
.pay-none{color:var(--sub);font-size:12.5px;text-align:center;line-height:2.1;padding:0 16px}
.pay-none b{color:var(--txt)}
.pay-note{margin-top:14px;text-align:center;color:var(--sub);font-size:13px;line-height:1.9}
.pay-note b{color:var(--txt)}
/* 图片查看 */
.lightbox{
  position:fixed;inset:0;z-index:99;background:rgba(20,18,15,.85);
  display:none;align-items:center;justify-content:center;cursor:zoom-out;padding:20px;
}
.lightbox.show{display:flex}
.lightbox img{max-width:94vw;max-height:92vh;border-radius:8px}

/* ================= 后台补充 ================= */
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.login-card{
  width:min(360px,92vw);background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:34px 30px 28px;box-shadow:0 14px 40px rgba(74,69,56,.10);
}
.login-card h1{font-size:19px;text-align:center;letter-spacing:2px;margin-bottom:6px}
.login-card p{font-size:12.5px;color:var(--sub);text-align:center;margin-bottom:22px}
.login-card input{
  width:100%;padding:11px 13px;font-size:14px;border-radius:9px;outline:none;
  border:1px solid var(--line);background:#fff;color:var(--txt);
}
.login-card input:focus{border-color:var(--line2)}
.login-card button{
  width:100%;margin-top:14px;padding:11px;font-size:14.5px;font-weight:600;cursor:pointer;
  border-radius:9px;border:1px solid var(--red);color:var(--red);background:transparent;transition:.15s;letter-spacing:2px;
}
.login-card button:hover{background:var(--red);color:#fff}
.login-err{margin-top:12px;font-size:13px;color:var(--red);text-align:center;min-height:18px}

.panel{display:none;height:100vh;height:100dvh}
.panel.show{display:grid;grid-template-columns:290px 1fr}
.side{border-right:1px solid var(--line);background:var(--bg2);display:flex;flex-direction:column}
.side-head{
  padding:14px 16px;border-bottom:1px solid var(--line);display:flex;
  align-items:center;justify-content:space-between;flex-shrink:0;
}
.side-head b{font-size:15px;letter-spacing:1px}
.side-head button{
  font-size:12.5px;color:var(--sub);background:transparent;border:1px solid var(--line);
  border-radius:8px;padding:5px 11px;cursor:pointer;
}
.side-head button:hover{color:var(--red);border-color:var(--red)}
.sess-list{flex:1;overflow-y:auto}
.sess{padding:12px 15px;cursor:pointer;border-bottom:1px solid var(--line);position:relative}
.sess:hover{background:rgba(165,66,47,.05)}
.sess.on{background:var(--red-soft)}
.sess .row1{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}
.sess .name{font-size:14px;font-weight:600}
.sess .time{font-size:11px;color:var(--sub)}
.sess .row2{font-size:12.5px;color:var(--sub);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding-right:10px}
.sess .row3{font-size:11px;color:#B0A893;margin-top:3px}
.sess .dot{
  position:absolute;top:11px;right:12px;min-width:17px;height:17px;border-radius:9px;
  background:var(--red);color:#fff;font-size:11px;line-height:17px;text-align:center;padding:0 4px;
}
.main-col{display:flex;flex-direction:column;min-width:0}
.talk-head{
  padding:12px 18px;border-bottom:1px solid var(--line);font-size:15px;font-weight:600;flex-shrink:0;
  display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
}
.talk-head i{font-style:normal;font-size:11.5px;color:var(--sub);font-weight:400}
.talk-head .back{display:none;margin-right:4px;color:var(--red);cursor:pointer;font-size:14px}
.talk-body{flex:1;overflow-y:auto;padding:18px}
.empty-talk{height:100%;display:flex;align-items:center;justify-content:center;color:var(--sub);font-size:13.5px}
.reply-wrap{border-top:1px solid var(--line);flex-shrink:0;background:rgba(247,244,236,.7)}
.canned{display:flex;gap:6px;padding:9px 14px 0;flex-wrap:wrap}
.canned button{
  font-size:12px;padding:4px 11px;border-radius:999px;cursor:pointer;color:var(--dim2);
  border:1px dashed var(--line2);background:transparent;transition:.15s;
}
.canned button:hover{color:var(--red);border-color:var(--red)}
.reply-row{display:flex;gap:9px;align-items:flex-end;padding:9px 14px 13px}
.reply-row textarea{
  flex:1;resize:none;max-height:110px;padding:9px 13px;font-size:14.5px;line-height:1.6;
  border-radius:10px;border:1px solid var(--line);outline:none;
  background:#fff;color:var(--txt);font-family:inherit;
}
.reply-row textarea:focus{border-color:var(--line2)}
.reply-row .tool-ico{font-size:17px;margin-bottom:7px}
.reply-row button.send{
  padding:9px 20px;font-size:14px;font-weight:600;border-radius:10px;cursor:pointer;
  border:1px solid var(--red);color:var(--red);background:transparent;transition:.15s;letter-spacing:2px;
}
.reply-row button.send:hover{background:var(--red);color:#fff}
.reply-row button.send:disabled{opacity:.4;cursor:default}
.talk-head .del-sess{
  margin-left:auto;font-size:12.5px;color:var(--sub);letter-spacing:1px;
  border:1px solid var(--line);border-radius:8px;padding:4px 11px;cursor:pointer;
  transition:.15s;flex-shrink:0;
}
.talk-head .del-sess:hover{color:var(--red);border-color:var(--red)}
@media (max-width:700px){
  .panel.show{grid-template-columns:1fr}
  .side{display:none}
  .side.show-list{display:flex}
  .main-col.hide-m{display:none}
  .talk-head .back{display:inline-block}
}