:root{
  --bg:#EDF0F5; --panel:#FFFFFF; --panel-2:#F5F7FB; --ink:#0F172A; --ink-2:#334155; --muted:#5F6B7F;
  --line:#DCE2EC; --line-strong:#C3CCDC;
  --accent:#1D4ED8; --accent-ink:#FFFFFF; --accent-soft:#E5EDFF; --accent-line:#B9C9F6;
  --ok:#0E7A4D; --ok-soft:#DCF3E7; --warn:#8F5600; --warn-soft:#FBEBCB; --bad:#B42318; --bad-soft:#FCE3E0;
  --vid:#0A1020; --vid-ink:#E7ECF5;
  --shadow:0 1px 2px rgba(15,23,42,.06),0 10px 28px rgba(15,23,42,.07);
  --font-ui:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-display:'Newsreader',Georgia,'Times New Roman',serif;
  --font-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0A101C; --panel:#111A2B; --panel-2:#16223A; --ink:#E7ECF5; --ink-2:#C2CCDD; --muted:#8E9BB2;
  --line:#22304A; --line-strong:#33445F;
  --accent:#7AA2FF; --accent-ink:#0A101C; --accent-soft:#1A2A52; --accent-line:#2F4A87;
  --ok:#4ADE9B; --ok-soft:#12332A; --warn:#F5B94C; --warn-soft:#3A2C0E; --bad:#FF8E84; --bad-soft:#3D1A1A;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0A101C; --panel:#111A2B; --panel-2:#16223A; --ink:#E7ECF5; --ink-2:#C2CCDD; --muted:#8E9BB2;
  --line:#22304A; --line-strong:#33445F;
  --accent:#7AA2FF; --accent-ink:#0A101C; --accent-soft:#1A2A52; --accent-line:#2F4A87;
  --ok:#4ADE9B; --ok-soft:#12332A; --warn:#F5B94C; --warn-soft:#3A2C0E; --bad:#FF8E84; --bad-soft:#3D1A1A;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35); color-scheme:dark}
/* Варианты акцента */
:root[data-accent="pine"]{--accent:#0F6B54;--accent-ink:#FFFFFF;--accent-soft:#DDF1EA;--accent-line:#A6D6C6}
:root[data-accent="brass"]{--accent:#8A5A0B;--accent-ink:#FFFFFF;--accent-soft:#F6EBD2;--accent-line:#E0C98F}
@media (prefers-color-scheme:dark){
  :root[data-accent="pine"]:not([data-theme="light"]){--accent:#4FD1A8;--accent-ink:#06150F;--accent-soft:#123329;--accent-line:#1F5A47}
  :root[data-accent="brass"]:not([data-theme="light"]){--accent:#E2B454;--accent-ink:#1A1306;--accent-soft:#3A2E12;--accent-line:#5C4A1E}}
:root[data-accent="pine"][data-theme="dark"]{--accent:#4FD1A8;--accent-ink:#06150F;--accent-soft:#123329;--accent-line:#1F5A47}
:root[data-accent="brass"][data-theme="dark"]{--accent:#E2B454;--accent-ink:#1A1306;--accent-soft:#3A2E12;--accent-line:#5C4A1E}

*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;font-family:var(--font-ui);font-size:15px;line-height:1.45;background:var(--bg);color:var(--ink);overscroll-behavior:none}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.ic{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.loading{padding:40px 16px;color:var(--muted);text-align:center}
#app{height:100dvh;display:flex}
.pane-list,.pane-chat{display:flex;flex-direction:column;min-width:0;background:var(--bg)}
.pane-list{width:100%;border-right:1px solid var(--line)}
.pane-chat{width:100%}
@media (min-width:820px){.pane-list{width:340px;flex:none}.pane-chat{flex:1}}
@media (max-width:819px){#app.in-chat .pane-list{display:none}#app:not(.in-chat) .pane-chat{display:none}}

.bar{display:flex;align-items:center;gap:8px;min-height:56px;padding:env(safe-area-inset-top,0px) max(12px,env(safe-area-inset-right,0px)) 0 max(12px,env(safe-area-inset-left,0px));border-bottom:1px solid var(--line);background:var(--panel)}
.bar h1{font-size:17px;font-weight:600;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar .sub{font-size:12px;color:var(--muted);font-weight:400;display:block}
.ibtn{display:inline-grid;place-items:center;width:40px;height:40px;border:0;border-radius:10px;background:transparent;color:var(--ink-2)}
.ibtn:hover{background:var(--panel-2)}
.back{display:none}
@media (max-width:819px){.pane-chat .back{display:inline-grid}}

.rooms{flex:1;overflow-y:auto;padding:8px;padding-left:max(8px,env(safe-area-inset-left,0px))}
.room{display:flex;gap:12px;align-items:center;width:100%;padding:10px;border:0;border-radius:12px;background:transparent;text-align:left}
.room:hover,.room.on{background:var(--panel)}
.room.on{box-shadow:inset 0 0 0 1px var(--line)}
.av{width:42px;height:42px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-weight:600;flex:none}
.room .t{flex:1;min-width:0}
.room b{display:block;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.room small{display:block;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{min-width:22px;height:22px;padding:0 6px;border-radius:11px;background:var(--accent);color:var(--accent-ink);font:600 12px var(--font-ui);display:grid;place-items:center}
.people{display:grid;gap:2px;padding:8px}
.empty{padding:32px 16px;color:var(--muted);text-align:center}

.msgs{flex:1;overflow-y:auto;padding:12px max(12px,env(safe-area-inset-right,0px)) 8px max(12px,env(safe-area-inset-left,0px));display:flex;flex-direction:column;gap:6px;overscroll-behavior:contain}
.day{align-self:center;color:var(--muted);font-size:12px;margin:8px 0 2px}
.m{max-width:min(78%,560px);padding:8px 12px;border-radius:14px;background:var(--panel);border:1px solid var(--line);align-self:flex-start;min-width:0}
.m.me{align-self:flex-end;background:var(--accent-soft);border-color:var(--accent-line)}
.m .who{font-size:12px;font-weight:600;color:var(--accent);margin-bottom:2px}
.m .tx{white-space:pre-wrap;overflow-wrap:anywhere}
.m .tm{font:400 11px var(--font-mono);color:var(--muted);margin-top:2px;display:flex;gap:8px;justify-content:flex-end;align-items:center}
.m.del .tx{color:var(--muted);font-style:italic}
.m img{display:block;max-width:100%;max-height:320px;border-radius:10px;margin-bottom:4px;cursor:zoom-in;background:var(--panel-2)}
.m .rm{border:0;background:transparent;color:var(--muted);padding:0;display:inline-grid}
.m .rm .ic{width:14px;height:14px}
.more{align-self:center;border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:4px 14px;color:var(--muted);font-size:13px}

.composer{display:flex;align-items:flex-end;gap:6px;padding:8px max(10px,env(safe-area-inset-right,0px)) max(8px,env(safe-area-inset-bottom,0px)) max(10px,env(safe-area-inset-left,0px));background:var(--panel);border-top:1px solid var(--line)}
.composer textarea{flex:1;min-width:0;resize:none;max-height:140px;min-height:42px;padding:10px 14px;border:1px solid var(--line-strong);border-radius:21px;background:var(--bg);color:var(--ink);font:inherit;line-height:1.35}
.composer textarea:focus{outline:2px solid var(--accent);outline-offset:0;border-color:transparent}
.send{background:var(--accent);color:var(--accent-ink)}
.send:hover{background:var(--accent);filter:brightness(1.08)}
.send[disabled]{opacity:.45;cursor:default}
.attach{display:flex;gap:8px;align-items:center;padding:6px 14px;background:var(--panel-2);border-top:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.attach img{width:44px;height:44px;object-fit:cover;border-radius:8px}
.attach span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.err{padding:6px 14px;background:var(--bad-soft);color:var(--bad);font-size:13px}
.viewer{position:fixed;inset:0;background:rgba(0,0,0,.88);display:grid;place-items:center;z-index:50;padding:16px}
.viewer>img{max-width:100%;max-height:100%;border-radius:8px}
.viewer>button{position:absolute;top:calc(12px + env(safe-area-inset-top,0px));right:12px;background:rgba(255,255,255,.14);color:#fff;border-radius:50%}

.login{margin:auto;width:min(380px,100%);padding:24px 16px;display:grid;gap:12px}
.login h1{font-size:22px}
.login label{display:grid;gap:4px;font-size:13px;color:var(--muted)}
.login input{height:44px;padding:0 12px;border:1px solid var(--line-strong);border-radius:10px;background:var(--panel);color:var(--ink);font:inherit}
.btn{height:44px;border:0;border-radius:10px;background:var(--accent);color:var(--accent-ink);font-weight:600}