:root{
  --bg:#081225;
  --card:#0c1b33;
  --line:rgba(255,255,255,.12);
  --text:#eaf2ff;
  --muted:rgba(234,242,255,.70);
  --blue:#3b82f6;
  --danger:#ff5d5d;
  --shadow:0 10px 24px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;
  background:var(--bg);
  color:var(--text);
}
.topbar{
  position:sticky; top:0; z-index:10;
  display:flex; justify-content:space-between; align-items:center;
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  background:rgba(12,27,51,.95);
}
.brand .title{font-weight:900}
.brand .sub{font-size:12px;color:var(--muted);margin-top:2px}
.actions{display:flex;gap:8px;align-items:center}
.chip{
  padding:9px 11px; border-radius:999px;
  border:1px solid var(--line);
  background:rgba(11,26,51,.92);
  color:var(--text);
  cursor:pointer;
}
.chip.danger{background:rgba(255,93,93,.18); border-color:rgba(255,93,93,.45)}
.wrap{max-width:900px;margin:0 auto;padding:14px}
.card{
  background:rgba(12,27,51,.92);
  border:1px solid var(--line);
  border-radius:16px;
  padding:14px;
  box-shadow:var(--shadow);
}
.hidden{display:none !important}
h2{margin:0 0 12px 0}
label{display:block;color:var(--muted);font-size:13px;margin:10px 0 6px}
input,textarea{
  width:100%;
  padding:12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(11,26,51,.92);
  color:var(--text);
  outline:none;
}
textarea{resize:vertical}
.grid2{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:760px){.grid2{grid-template-columns:1fr 1fr}}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.btn{
  padding:12px; border-radius:12px;
  border:1px solid var(--line);
  background:rgba(11,26,51,.92);
  color:var(--text);
  cursor:pointer;
  min-width:120px;
}
.btn.primary{background:var(--blue);border-color:transparent;color:white;font-weight:900}
.hint{color:var(--muted);font-size:12px;margin-top:10px;white-space:pre-wrap}
.chatcard{padding:0;overflow:hidden}
.chathead{
  display:flex;justify-content:space-between;align-items:flex-end;
  padding:14px;border-bottom:1px solid var(--line);
}
.roomtitle{font-weight:900}
.roomsub{color:var(--muted);font-size:12px;margin-top:4px}
.me{color:var(--muted);font-size:12px}
.chat{
  padding:12px;
  height:min(62vh,560px);
  overflow:auto;
  background:rgba(7,16,32,.6);
}
.msg{
  border:1px solid var(--line);
  background:rgba(11,26,51,.92);
  border-radius:14px;
  padding:10px 10px 8px 10px;
  margin:10px 0;
}
.meta{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.name{font-weight:900}
.time{color:var(--muted);font-size:12px}
.badges{display:flex;gap:6px;align-items:center}
.badge{font-size:11px;padding:2px 8px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.text{margin-top:6px;white-space:pre-wrap;line-height:1.35; font-variant-numeric: tabular-nums;}
.tools{margin-top:8px;display:flex;gap:8px;flex-wrap:wrap}
.toolbtn{
  padding:8px 10px;border-radius:999px;border:1px solid var(--line);
  background:rgba(11,26,51,.92);color:var(--text);cursor:pointer;font-size:12px
}
.toolbtn.danger{background:rgba(255,93,93,.18); border-color:rgba(255,93,93,.45)}
.composer{padding:14px;border-top:1px solid var(--line);background:rgba(12,27,51,.95)}
.editbar{
  display:flex;justify-content:space-between;align-items:center;
  border:1px dashed rgba(255,255,255,.25);
  border-radius:12px;
  padding:10px;
  margin-bottom:10px;
  color:var(--muted);
}
.toast{
  position:fixed; left:50%; bottom:18px; transform:translateX(-50%);
  background:rgba(12,27,51,.98); border:1px solid var(--line);
  padding:10px 12px; border-radius:12px; z-index:60; box-shadow:var(--shadow)
}
@media(max-width:420px){
  .btn{min-width:unset;flex:1}
}