:root{
  --bg:#ededed;
  --bar:#f7f7f7;
  --line:#dcdcdc;
  --text:#111;
  --dim:#8c8c8c;
  --green:#95ec69;
  --greenBtn:#07c160;
  --panel:#fff;
  --link:#576b95;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:15px/1.5 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  display:flex;flex-direction:column;height:100dvh;
}

/* ---------- 顶栏：仿微信标题居中 ---------- */
header{
  position:relative;display:flex;align-items:center;justify-content:center;
  padding:11px 14px;background:var(--bar);border-bottom:1px solid var(--line);
  padding-top:calc(11px + env(safe-area-inset-top));flex:0 0 auto;
}
.hd-left{text-align:center;min-width:0}
.hd-left span{display:block;font-size:17px;font-weight:600;line-height:1.2}
.hd-left small{display:none}
/* 第二排：功能标签 */
.tabs{
  display:flex;flex:0 0 auto;background:var(--bar);
  border-bottom:1px solid var(--line);padding:0 6px;
  padding-bottom:0;
}
.tab{
  flex:1;background:transparent;border:0;color:var(--link);font-size:14px;
  padding:9px 4px 8px;cursor:pointer;position:relative;
  border-bottom:2px solid transparent;
}
.tab.active{color:var(--greenBtn);font-weight:600;border-bottom-color:var(--greenBtn)}

main{flex:1;overflow:hidden;display:flex;min-height:0}
.view{display:none;flex:1;overflow-y:auto;padding:14px;flex-direction:column}

/* ---------- 聊天 ---------- */
#view-chat{padding:0}
.view.active{display:flex}

/* 聊天区整体滚动：角色条跟着滚走，不钉在顶上 */
.chat-scroll{flex:1;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;display:flex;flex-direction:column}
.chips{
  display:flex;gap:6px;overflow-x:auto;padding:8px 10px;
  background:var(--bg);flex:0 0 auto;align-items:center;
}
.chips.off{display:none}
.chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;cursor:pointer;
  background:#fff;border:1px solid var(--line);color:#444;
  padding:4px 10px 4px 5px;border-radius:14px;font-size:13px;
}
.chip.on{background:#e8f7e0;border-color:#9fdc7f;color:#12632f}

.msgs{
  flex:1;overflow:visible;padding:12px 10px 16px;
  display:flex;flex-direction:column;gap:14px;
  background:var(--bg);-webkit-overflow-scrolling:touch;
}
.time{text-align:center;font-size:12px;color:#9a9a9a;margin:2px 0}

.msg{display:flex;gap:8px;align-items:flex-start;max-width:100%}
.msg.me{flex-direction:row-reverse}
.msg.them{flex-direction:row}

.av{
  width:38px;height:38px;border-radius:5px;overflow:hidden;background:#d8d8d8;
  flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:20px;
}
.av .av-wrap{width:100%;height:100%}
.col{display:flex;flex-direction:column;gap:4px;max-width:calc(100% - 120px)}
.msg.me .col{align-items:flex-end}
.name{font-size:11px;color:var(--dim);padding:0 2px;display:none}
.msgs.group .msg.them .name{display:block}

.bubble{
  position:relative;background:#fff;border:1px solid #e3e3e3;border-radius:6px;
  padding:9px 12px;white-space:pre-wrap;word-break:break-word;font-size:15px;
  box-shadow:0 1px 0 rgba(0,0,0,.02);
}
.msg.me .bubble{background:var(--green);border-color:#8ddc60}
.bubble::before{
  content:"";position:absolute;top:13px;width:0;height:0;
  border:6px solid transparent;
}
.msg.them .bubble::before{left:-12px;border-right-color:#fff}
.msg.me .bubble::before{right:-12px;border-left-color:var(--green)}
.typing{color:#9a9a9a;letter-spacing:2px}
.typing::after{content:"";animation:dots 1.2s steps(4,end) infinite}
@keyframes dots{0%{content:""}25%{content:"."}50%{content:".."}75%{content:"..."}}
.err{color:#c0392b;font-size:13px}

.composer{
  display:flex;gap:8px;align-items:flex-end;flex:0 0 auto;
  padding:8px 10px;background:var(--bar);border-top:1px solid var(--line);
  padding-bottom:calc(8px + env(safe-area-inset-bottom));
}
.composer textarea{
  flex:1;background:#fff;border:1px solid var(--line);border-radius:6px;
  padding:9px 11px;font:15px/1.4 inherit;color:var(--text);resize:none;outline:none;max-height:120px;
}
.composer textarea:focus{border-color:#b5b5b5}
#send{
  background:var(--greenBtn);color:#fff;border:0;border-radius:6px;
  padding:9px 16px;font-size:15px;font-weight:600;cursor:pointer;flex:0 0 auto;
}
#send:disabled{opacity:.45}
.hint{font-size:12px;color:#b26a00;padding:0 12px 6px;background:var(--bar)}

/* ---------- 通用控件 ---------- */
h2{font-size:16px;margin:4px 0 12px;font-weight:600}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:10px}
label{display:block;margin-bottom:12px;font-size:13px;color:var(--dim)}
label input,label textarea{
  margin-top:6px;width:100%;background:#fff;border:1px solid var(--line);
  border-radius:6px;padding:9px 11px;font:15px/1.4 inherit;color:var(--text);outline:none;
}
textarea{resize:none}
hr{border:0;border-top:1px solid var(--line);margin:16px 0}

button.primary{background:var(--greenBtn);color:#fff;border:0;border-radius:6px;
  padding:10px 16px;font-weight:600;font-size:15px;cursor:pointer}
button.small{padding:7px 12px;font-size:13px}
button.ghost{background:#fff;border:1px solid var(--line);color:#444;
  border-radius:6px;padding:9px 14px;cursor:pointer;margin:6px 6px 6px 0;font-size:14px}
button.danger{background:#fff;border:1px solid #e0a0a0;color:#c0392b;
  border-radius:6px;padding:9px 14px;cursor:pointer;font-size:14px}

.card{
  display:flex;gap:12px;align-items:center;background:#fff;border-radius:8px;
  padding:12px;margin-bottom:10px;cursor:pointer;border:1px solid #e6e6e6;
}
.card:active{background:#f2f2f2}
.card .av{width:46px;height:46px;font-size:24px;border-radius:6px}
.card .nm{font-weight:600;font-size:15px}
.card .tg{font-size:12px;color:var(--dim);margin-top:2px}
.empty{color:var(--dim);font-size:13px;text-align:center;padding:20px}

.mems{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.mem{background:#fff;border-left:3px solid var(--greenBtn);border-radius:6px;
  padding:8px 10px;font-size:13px;color:#444}

.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:flex-end;z-index:50}
.modal.hidden{display:none}
.sheet{
  background:var(--bar);border-radius:14px 14px 0 0;padding:18px;width:100%;
  max-height:88dvh;overflow-y:auto;
  padding-bottom:calc(18px + env(safe-area-inset-bottom));
}
.sheet h3{margin:0 0 14px;font-size:16px;font-weight:600}

.avrow{display:flex;gap:8px;align-items:center;margin-top:6px}
.avrow input{flex:1}
.avprev{width:42px;height:42px;border-radius:6px;overflow:hidden;background:#e4e4e4;
  display:inline-flex;align-items:center;justify-content:center;font-size:21px;flex:0 0 auto}
.avprev .av-wrap{width:100%;height:100%}
.uploadbtn{
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;margin:0;
  background:#fff;border:1px solid var(--line);color:#444;border-radius:6px;
  padding:9px 12px;font-size:12px;cursor:pointer;
}
.uploadbtn input{display:none}

.av-wrap{position:relative;display:inline-flex;align-items:center;justify-content:center;
  width:100%;height:100%;overflow:hidden;border-radius:inherit}
.av-emo{line-height:1}
.av-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:inherit}

.locked{background:#fff;border:1px dashed var(--line);color:var(--dim);
  border-radius:6px;padding:11px 12px;font-size:13px;margin-bottom:12px}
.hidden{display:none !important}

/* ---------- 单聊：切换条 / 空白态 / 锁定标记 ---------- */
.chip-x{
  margin-left:2px;width:16px;height:16px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:10px;color:#6b7f6b;background:rgba(0,0,0,.06);
}
.chip-x:hover{background:rgba(0,0,0,.14);color:#333}
.blank{
  margin:auto;color:#9a9a9a;font-size:14px;text-align:center;
  background:#fff;border-radius:8px;padding:14px 18px;
}
.composer.off{display:none}
.lock{font-size:12px;opacity:.7}

/* ---------- 点头像菜单 ---------- */
.av.tappable{cursor:pointer}
.av.tappable:active{opacity:.7}
button.wide{display:block;width:100%;margin:0 0 8px;text-align:center}
button.wide.ghost,button.wide.danger{padding:12px 14px;font-size:15px}

/* ---------- 自定义弹窗 / 提示 ---------- */
#dialog{align-items:center;justify-content:center;padding:0 28px}
#dialog .dlg-sheet{
  border-radius:14px;max-width:330px;margin:0 auto;padding:20px 18px 14px;
  background:#fff;box-shadow:0 12px 40px rgba(0,0,0,.18);
}
#dialog h3{margin:0 0 8px;font-size:16px;font-weight:600;text-align:center;color:#111}
.dlg-msg{
  margin:0 0 18px;font-size:14px;line-height:1.6;color:#555;
  white-space:pre-wrap;text-align:center;word-break:break-word;max-height:50dvh;overflow-y:auto;
}
.dlg-btns{display:flex;flex-direction:column;gap:8px}
.dlg-btns button.wide{margin:0;padding:12px 14px;font-size:15px;border-radius:8px}
button.wide.danger.solid{background:#fa5151;color:#fff;border:1px solid #fa5151}

#toast{
  position:fixed;left:50%;bottom:90px;transform:translateX(-50%);
  background:rgba(17,17,17,.82);color:#fff;font-size:14px;
  padding:9px 16px;border-radius:8px;max-width:78vw;text-align:center;
  opacity:0;pointer-events:none;transition:opacity .18s ease;z-index:70;
}
#toast.on{opacity:1}

/* ---------- 只读提示 / 成员页 ---------- */
.readonly{
  background:#fff6e5;color:#8a6100;font-size:12px;
  padding:7px 12px;border-bottom:1px solid #f0e0c0;text-align:center;
}
.readonly b{font-weight:600}
.tip{font-size:12px;color:#9a9a9a;margin:10px 2px}
.ghost.hidden{display:none}

/* ---------- 角色条开关 ---------- */
.chip-close{
  margin-left:auto;flex:0 0 auto;background:rgba(0,0,0,.05);border:0;
  color:#888;font-size:12px;padding:4px 9px;border-radius:12px;cursor:pointer;
}
.chip-close:hover{background:rgba(0,0,0,.1);color:#333}
.chip-toggle{
  position:absolute;right:10px;top:6px;z-index:5;
  background:rgba(255,255,255,.92);border:1px solid var(--line);
  color:var(--link);font-size:12px;padding:3px 10px;border-radius:12px;
  cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,.06);
}
#view-chat{position:relative}

/* ---------- 角色栏：单个关闭 + 添加 ---------- */
.chip-add{
  flex:0 0 auto;background:#fff;border:1px dashed var(--line);color:var(--link);
  width:26px;height:26px;border-radius:50%;font-size:15px;line-height:1;
  display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0;
}
.chip-add:hover{border-color:var(--greenBtn);color:var(--greenBtn)}
.chip .chip-x{
  display:inline-flex;align-items:center;justify-content:center;
  width:16px;height:16px;border-radius:50%;background:rgba(0,0,0,.08);
  color:#666;font-size:10px;margin-left:1px;
}
.chip .chip-x:hover{background:rgba(250,81,81,.15);color:#fa5151}

.pick{
  display:flex;align-items:center;gap:10px;padding:9px 8px;border-radius:10px;
  cursor:pointer;
}
.pick:hover{background:#f5f5f5}
.pick.off{opacity:.5}
.pick .av{width:34px;height:34px;flex:0 0 auto}
.pick .meta{flex:1;min-width:0;display:flex;flex-direction:column}
.pick .nm{font-size:14px;font-weight:600}
.pick .tg{font-size:12px;color:var(--dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pick .mark{font-size:15px;color:var(--greenBtn);width:20px;text-align:center}
.pick.off .mark{color:#bbb}

/* ---------- 头像行：上传为主，链接/表情收进小按钮 ---------- */
.avrow{gap:10px}
.avrow input[type=hidden]{display:none}
.linkbtn{
  background:none;border:0;padding:2px 0;color:var(--link);font-size:13px;
  cursor:pointer;text-decoration:underline;text-underline-offset:2px;
}
.linkbtn:hover{color:var(--greenBtn)}
.pm-input{
  width:100%;background:#f7f7f7;border:1px solid #e3e3e3;border-radius:8px;
  padding:11px 12px;font:15px inherit;color:#111;outline:none;margin:4px 0 14px;
}
.pm-input:focus{border-color:var(--greenBtn)}

/* ---------- 成员卡片删除 ---------- */
.card .del-btn{
  margin-left:auto;flex:0 0 auto;background:none;border:1px solid #f0c8c8;
  color:#e05a5a;font-size:12px;padding:4px 10px;border-radius:12px;cursor:pointer;
}
.card .del-btn:hover{background:#fdecec;border-color:#e88}