:root{
  --bg:#0f1115; --panel:#161a21; --panel2:#1c212a; --line:#262c37;
  --text:#e6e9ef; --muted:#8b94a5; --accent:#4c8dff; --out:#274b8a;
  --danger:#e05a5a; --ok:#3fb950; --radius:10px;
}
@media (prefers-color-scheme: light){
  :root{ --bg:#f5f6f8; --panel:#fff; --panel2:#f0f2f5; --line:#e2e5ea;
         --text:#151922; --muted:#6b7383; --out:#d6e4ff; }
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  display:flex;flex-direction:column}

/* topbar */
.topbar{display:flex;align-items:center;gap:20px;padding:0 18px;height:52px;
  background:var(--panel);border-bottom:1px solid var(--line);flex:0 0 auto}
.brand{font-weight:700;letter-spacing:.5px;text-decoration:none;color:var(--text)}
.topbar nav{display:flex;gap:16px;flex:1}
.topbar nav a{color:var(--muted);text-decoration:none;font-size:14px;padding:4px 0}
.topbar nav a:hover,.topbar nav a.on{color:var(--text);box-shadow:inset 0 -2px 0 var(--accent)}
.me{display:flex;align-items:center;gap:10px;font-size:13px}
.who{color:var(--muted);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* generic */
main{flex:1 1 auto;min-height:0}
main.centered{display:flex;align-items:center;justify-content:center;padding:24px}
main.page{padding:24px;max-width:1100px;margin:0 auto;width:100%;overflow:auto}
h1{font-size:20px;margin:0 0 6px}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.nowrap{white-space:nowrap}
.center{text-align:center}
code{background:var(--panel2);padding:1px 5px;border-radius:4px;font-size:12.5px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card.auth{width:min(380px,100%);text-align:center}
.card.auth h1{margin-bottom:10px}
.card.auth p{margin:0 0 20px}

.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:8px;
  padding:10px 16px;font-size:14px;cursor:pointer;text-decoration:none}
.btn:hover{filter:brightness(1.08)}
.btn.small{padding:6px 12px;font-size:13px}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn.google{width:100%}
.link{background:none;border:0;color:var(--accent);cursor:pointer;font-size:13px;padding:0;text-decoration:none}
.link.danger{color:var(--danger)}
.inline{display:inline}
select,input[type=search],textarea{background:var(--panel2);color:var(--text);
  border:1px solid var(--line);border-radius:8px;padding:8px 10px;font:inherit;font-size:14px}
textarea{resize:vertical;width:100%}

.tag{font-size:11.5px;padding:2px 8px;border-radius:20px;border:1px solid var(--line);color:var(--muted)}
.tag.owner{color:var(--accent);border-color:var(--accent)}
.tag.all{color:var(--ok);border-color:var(--ok)}

/* split layout */
main.split{display:flex;min-height:0}
.sidebar{width:340px;flex:0 0 340px;border-right:1px solid var(--line);
  background:var(--panel);display:flex;flex-direction:column;min-height:0}
.sidebar .search{padding:10px;border-bottom:1px solid var(--line)}
.sidebar .search input{width:100%}
.chatlist{list-style:none;margin:0;padding:0;overflow-y:auto;flex:1}
.chatlist li.empty{padding:20px;color:var(--muted);font-size:13.5px}
.chatlist a{display:flex;gap:10px;padding:10px 12px;text-decoration:none;color:var(--text);
  border-bottom:1px solid var(--line)}
.chatlist a:hover{background:var(--panel2)}
.chatlist a.active{background:var(--panel2);box-shadow:inset 3px 0 0 var(--accent)}
.avatar{width:38px;height:38px;flex:0 0 38px;border-radius:50%;background:var(--panel2);
  display:grid;place-items:center;font-weight:600;color:var(--muted)}
.avatar.group,.avatar.channel{border-radius:8px}
.chatlist .meta{min-width:0;flex:1}
.row1{display:flex;justify-content:space-between;gap:8px;align-items:baseline}
.name{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row1 time{font-size:11.5px;color:var(--muted);flex:0 0 auto}
.preview{display:block;font-size:12.5px;color:var(--muted);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.pane{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0}
.pane.placeholder{align-items:center;justify-content:center}
.chathead{padding:12px 18px;border-bottom:1px solid var(--line);background:var(--panel);
  display:flex;gap:10px;align-items:baseline;flex:0 0 auto}
.messages{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:min(660px,78%);padding:8px 12px;border-radius:12px;background:var(--panel);
  border:1px solid var(--line);align-self:flex-start}
.msg.out{align-self:flex-end;background:var(--out);border-color:transparent}
.msg .from{font-size:12px;color:var(--accent);margin-bottom:2px;font-weight:600}
.msg .body{white-space:pre-wrap;word-wrap:break-word}
.msg .stamp{font-size:11px;color:var(--muted);margin-top:4px}
.msg.out .stamp{color:#c3d4f0}
.msg .removed{color:var(--danger)}
.thumb{max-width:100%;border-radius:8px;display:block;margin-bottom:4px}
.attach{font-size:13px;color:var(--muted);font-style:italic}
audio{max-width:280px;display:block;margin-bottom:4px}

.composer{display:flex;gap:10px;padding:12px;border-top:1px solid var(--line);
  background:var(--panel);flex:0 0 auto;align-items:flex-end}
.composer textarea{flex:1}

/* tables */
.grid{width:100%;border-collapse:collapse;margin-top:14px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.grid th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.4px;
  color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--line);font-weight:600}
.grid td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.grid tr:last-child td{border-bottom:0}
.grid tr.pendingrow{background:rgba(76,141,255,.07)}
.search.wide{margin-top:16px}
.search.wide input{width:min(420px,100%)}
.modeform{display:flex;gap:18px;align-items:center;margin:16px 0;flex-wrap:wrap;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.notice{background:rgba(63,185,80,.1);border:1px solid var(--ok);color:var(--text);
  padding:10px 14px;border-radius:8px;font-size:13.5px}

@media (max-width:820px){
  .sidebar{flex:0 0 100%;width:100%}
  main.split{flex-direction:column}
  .msg{max-width:92%}
}

/* кнопка снятия сообщения в Telegram */
.delform{display:inline;margin-left:6px}
.link.tiny{font-size:11px;opacity:.65}
.link.tiny:hover{opacity:1;text-decoration:underline}
.msg.out .link.tiny{color:#ffb4b4}