:root{--primary:#1f6feb;--accent:#16a34a;--bg:#f6f7f9;--panel:#fff;--line:#e3e6ea;--text:#17202a;--muted:#667085;--danger:#d92d20;--warn:#b54708;--radius:10px;
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--text);background:var(--bg)}
@media (prefers-color-scheme:dark){:root{--bg:#0f1318;--panel:#171c22;--line:#2a313a;--text:#e6e9ee;--muted:#98a2b3}}
*{box-sizing:border-box}body{margin:0}a{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
.btn{border:1px solid var(--line);background:var(--panel);padding:7px 12px;border-radius:8px;cursor:pointer}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.danger{color:var(--danger)}
.btn:disabled{opacity:.5;cursor:default}
input,select,textarea{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:8px 10px;width:100%}
label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
.shell{display:grid;grid-template-columns:220px 1fr;height:100vh}
.side{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:14px 10px;gap:4px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;padding:4px 8px 14px}
.brand img{height:30px;max-width:120px;object-fit:contain}
.nav{display:block;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--text)}
.nav.on{background:color-mix(in srgb,var(--primary) 14%,transparent);color:var(--primary);font-weight:600}
.side .foot{margin-top:auto;font-size:13px;color:var(--muted);padding:8px}
main{overflow:auto}.page{padding:20px 24px;max-width:1100px}
h1{font-size:20px;margin:0 0 16px}h2{font-size:16px;margin:22px 0 10px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.grow{flex:1}
.pill{display:inline-block;padding:2px 8px;border-radius:99px;font-size:12px;background:var(--line)}
.pill.ok{background:color-mix(in srgb,var(--accent) 18%,transparent);color:var(--accent)}.pill.bad{background:color-mix(in srgb,var(--danger) 14%,transparent);color:var(--danger)}
.muted{color:var(--muted);font-size:13px}.err{color:var(--danger);font-size:14px;margin-top:8px}
.center{min-height:100vh;display:grid;place-items:center;padding:16px}.login{width:min(380px,100%)}
.inbox{display:grid;grid-template-columns:330px 1fr;height:100vh}
.list{border-right:1px solid var(--line);background:var(--panel);overflow:auto}
.list .tools{padding:10px;border-bottom:1px solid var(--line);display:grid;gap:8px;position:sticky;top:0;background:var(--panel)}
.chat-item{padding:10px 12px;border-bottom:1px solid var(--line);cursor:pointer;display:grid;gap:2px}
.chat-item.on{background:color-mix(in srgb,var(--primary) 10%,transparent)}
.chat-item .t{font-weight:600;display:flex;justify-content:space-between;gap:8px}.chat-item .p{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{background:var(--accent);color:#fff;border-radius:99px;font-size:11px;padding:1px 7px}
.conv{display:flex;flex-direction:column;height:100vh;min-width:0}
.conv .head{padding:10px 16px;border-bottom:1px solid var(--line);background:var(--panel);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.msgs{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:6px}
.msg{max-width:72%;padding:8px 10px;border-radius:10px;background:var(--panel);border:1px solid var(--line);white-space:pre-wrap;word-wrap:break-word;font-size:14px}
.msg.me{align-self:flex-end;background:color-mix(in srgb,var(--primary) 12%,var(--panel))}
.msg.note{align-self:center;background:color-mix(in srgb,var(--warn) 12%,var(--panel));font-style:italic}
.msg .meta{font-size:11px;color:var(--muted);margin-top:3px;text-align:right}.msg img,.msg video{max-width:280px;border-radius:8px;display:block}
.composer{border-top:1px solid var(--line);padding:10px;background:var(--panel);display:grid;gap:8px}
.composer textarea{min-height:44px;max-height:160px;resize:vertical}
.modal{position:fixed;inset:0;background:#0007;display:grid;place-items:center;z-index:10;padding:16px}.modal .card{width:min(460px,100%)}
.qr{display:block;margin:12px auto;width:280px;height:280px;background:#fff;padding:8px;border-radius:8px}
@media (max-width:760px){.shell{grid-template-columns:1fr}.side{flex-direction:row;overflow:auto;padding:6px}.side .foot,.brand span{display:none}
 .inbox{grid-template-columns:1fr}.inbox.has .list{display:none}.inbox:not(.has) .conv{display:none}.page{padding:16px}}