/* =========================================================================
   Whisper — web client
   ========================================================================= */
:root{
  --bg:#0e1116;
  --bg-2:#131720;
  --panel:#161b24;
  --panel-2:#1c2230;
  --hover:#1f2635;
  --active:#263049;
  --line:#242b39;
  --line-2:#2e3748;
  --text:#e8ebf1;
  --text-2:#a3abbb;
  --text-3:#6c7486;
  --accent:#4f7cff;
  --accent-2:#3d68e6;
  --accent-soft:rgba(79,124,255,.14);
  --danger:#ef5350;
  --ok:#34c77b;
  --warn:#f5a524;
  --bubble-in:#1c2230;
  --bubble-out:#2b4a9a;
  --radius:12px;
  --radius-sm:8px;
  --sidebar-w:340px;
  --header-h:60px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shadow:0 12px 40px rgba(0,0,0,.45),0 2px 8px rgba(0,0,0,.3);
  --sat:env(safe-area-inset-top,0px);
  --sab:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;background:var(--bg);color:var(--text);font:14px/1.45 var(--font);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overflow:hidden}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
button:disabled{cursor:default;opacity:.5}
a{color:#8fb0ff}
svg{display:block;flex-shrink:0}
/* fallback: any inline icon without explicit size stays icon-sized */
svg:not([width]){width:18px;height:18px}
::selection{background:rgba(79,124,255,.4)}
*{scrollbar-width:thin;scrollbar-color:#2c3446 transparent}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#2c3446;border-radius:8px;border:2px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-track{background:transparent}
.hidden{display:none!important}
.grow{flex:1;min-width:0}
.ellipsis{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.muted{color:var(--text-3)}

#root{height:100%;height:100dvh}

/* ---------- controls ---------- */
.input,.textarea,.select{
  width:100%;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--radius-sm);
  padding:10px 12px;outline:none;transition:border-color .15s,box-shadow .15s;min-width:0
}
.textarea{resize:vertical;min-height:72px}
.input:focus,.textarea:focus,.select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.input::placeholder,.textarea::placeholder{color:var(--text-3)}
.label{display:block;font-size:12px;font-weight:600;color:var(--text-2);margin:14px 0 6px;letter-spacing:.02em}
.label:first-child{margin-top:0}
.hint{font-size:12px;color:var(--text-3);margin-top:6px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 16px;
  border-radius:var(--radius-sm);font-weight:600;white-space:nowrap;transition:background .15s,opacity .15s;user-select:none
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--accent-2)}
.btn-ghost{background:var(--panel-2);color:var(--text)}
.btn-ghost:hover:not(:disabled){background:var(--hover)}
.btn-danger{background:rgba(239,83,80,.14);color:#ff7b78}
.btn-danger:hover:not(:disabled){background:rgba(239,83,80,.24)}
.btn-block{width:100%}
.btn svg{width:16px;height:16px}
.btn-sm svg{width:15px;height:15px}
.bar-ic svg{width:20px;height:20px}
.urow .av svg{width:50%;height:50%}
.side-search span{display:contents}
.btn-sm{height:30px;padding:0 12px;font-size:13px}
.icon-btn{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:background .15s,color .15s;flex-shrink:0
}
.icon-btn:hover:not(:disabled){background:var(--hover);color:var(--text)}
.icon-btn.on{color:var(--accent)}
.icon-btn svg{width:20px;height:20px}
.error-text{color:#ff7b78;font-size:13px;min-height:18px;margin-top:10px}
.spinner{width:18px;height:18px;border-radius:50%;border:2px solid rgba(255,255,255,.2);border-top-color:#fff;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- avatar ---------- */
.av{
  --s:44px;position:relative;width:var(--s);height:var(--s);border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;
  font-size:calc(var(--s) * .38);user-select:none;background:#3a4256;text-transform:uppercase;letter-spacing:.01em
}
.av > .av-img{position:absolute;inset:0;width:100%;height:100%;border-radius:50%;object-fit:cover;opacity:0;transition:opacity .2s;background:var(--panel)}
.av > .av-img.ok{opacity:1}
.av > .av-dot{position:absolute;right:0;bottom:0;width:28%;height:28%;min-width:10px;min-height:10px;border-radius:50%;background:var(--ok);border:2px solid var(--panel);display:none}
.av.online > .av-dot{display:block}
.av-xs{--s:28px}.av-sm{--s:36px}.av-md{--s:44px}.av-lg{--s:64px}.av-xl{--s:96px}
.av svg{width:50%;height:50%}

/* ---------- auth ---------- */
.auth{height:100%;display:flex;align-items:center;justify-content:center;padding:24px 16px;overflow:auto;
  background:radial-gradient(900px 500px at 20% -10%,rgba(79,124,255,.12),transparent 60%),var(--bg)}
.auth-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow)}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:22px}
.brand-logo{width:36px;height:36px;border-radius:10px;background:var(--accent);display:flex;align-items:center;justify-content:center}
.brand-name{font-size:20px;font-weight:700;letter-spacing:-.01em}
.brand-sub{font-size:12px;color:var(--text-3)}
.seg{display:grid;grid-template-columns:1fr 1fr;background:var(--bg-2);border:1px solid var(--line);border-radius:10px;padding:3px;margin-bottom:18px}
.seg button{height:34px;border-radius:7px;color:var(--text-2);font-weight:600}
.seg button.on{background:var(--panel-2);color:var(--text);box-shadow:0 1px 2px rgba(0,0,0,.3)}
.auth form .btn{margin-top:18px}
.auth-server{margin-top:18px;border-top:1px solid var(--line);padding-top:14px}
.auth-server summary{cursor:pointer;color:var(--text-3);font-size:12px;list-style:none;user-select:none}
.auth-server summary::-webkit-details-marker{display:none}
.auth-server .row{display:flex;gap:8px;margin-top:10px}

/* ---------- app layout ---------- */
.app{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);height:100%;overflow:hidden}
.sidebar{display:flex;flex-direction:column;min-height:0;background:var(--panel);border-right:1px solid var(--line)}
.main{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg);position:relative}
.panel-info{display:none}

.side-head{display:flex;align-items:center;gap:10px;padding:calc(10px + var(--sat)) 12px 10px;min-height:var(--header-h)}
.me-btn{display:flex;align-items:center;gap:10px;flex:1;min-width:0;padding:4px 6px;border-radius:10px;text-align:left}
.me-btn:hover{background:var(--hover)}
.me-name{font-weight:600}
.me-sub{font-size:12px;color:var(--text-3)}
.conn{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--warn);padding:0 16px 8px}
.conn .spinner{width:12px;height:12px;border-color:rgba(245,165,36,.3);border-top-color:var(--warn)}
.nbanner{display:flex;align-items:center;gap:10px;margin:0 12px 10px;padding:10px 8px 10px 12px;border-radius:12px;background:var(--accent-soft);font-size:13px;color:var(--text)}
.nbanner > span svg{width:18px;height:18px;color:var(--accent)}
.nbanner .icon-btn{width:30px;height:30px}
.nbanner .icon-btn svg{width:16px;height:16px}
.side-search{padding:0 12px 10px;position:relative}
.side-search svg{position:absolute;left:24px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-3);margin-top:-5px;pointer-events:none}
.side-search .input{padding-left:36px;height:38px;background:var(--bg-2);border-color:transparent;border-radius:10px}
.side-search .clear{position:absolute;right:16px;top:3px;width:32px;height:32px}
.chat-list{flex:1;overflow-y:auto;overflow-x:hidden;padding:0 8px calc(8px + var(--sab));contain:strict}
.list-caption{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);padding:12px 10px 6px}
.list-empty{padding:40px 20px;text-align:center;color:var(--text-3)}
.citem{display:flex;align-items:center;gap:12px;padding:8px 10px;border-radius:10px;cursor:pointer;height:64px;user-select:none;contain:layout paint}
.citem:hover{background:var(--hover)}
.citem.on{background:var(--active)}
.citem .body{flex:1;min-width:0}
.citem .row1,.citem .row2{display:flex;align-items:center;gap:8px}
.citem .name{flex:1;min-width:0;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:5px}
.citem .name svg{width:14px;height:14px;color:var(--text-3)}
.citem .time{font-size:12px;color:var(--text-3);flex-shrink:0}
.citem .prev{flex:1;min-width:0;font-size:13px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.citem .prev .who{color:var(--text-2)}
.citem .prev.typing{color:var(--accent)}
.badge{min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--accent);color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.fab{position:absolute;right:18px;bottom:calc(18px + var(--sab));width:52px;height:52px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(79,124,255,.4)}
.fab:hover{background:var(--accent-2)}
.fab svg{width:24px;height:24px}
.sidebar{position:relative}

/* ---------- chat ---------- */
.empty-main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--text-3);padding:24px;text-align:center}
.empty-main .ic{width:64px;height:64px;border-radius:20px;background:var(--panel);display:flex;align-items:center;justify-content:center;color:var(--text-2)}
.empty-main .ic svg{width:30px;height:30px}
.chat-head{display:flex;align-items:center;gap:8px;padding:calc(8px + var(--sat)) 10px 8px;min-height:var(--header-h);background:var(--panel);border-bottom:1px solid var(--line);flex-shrink:0;z-index:2}
.chat-head .back{display:none}
.chat-head .who{display:flex;align-items:center;gap:12px;flex:1;min-width:0;padding:4px 6px;border-radius:10px;text-align:left}
.chat-head .who:hover{background:var(--hover)}
.chat-title{font-weight:600;font-size:15px}
.chat-sub{font-size:12.5px;color:var(--text-3)}
.chat-sub.on{color:var(--accent)}
.chat-body{flex:1;min-height:0;position:relative;display:flex;flex-direction:column}
.msgs{flex:1;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;padding:12px 0 8px}
.msgs-inner{max-width:860px;margin:0 auto;padding:0 16px;display:flex;flex-direction:column}
.loader-top{display:flex;justify-content:center;padding:10px;min-height:38px}
.day{align-self:center;margin:12px 0 8px;padding:3px 12px;border-radius:12px;background:rgba(22,27,36,.9);color:var(--text-2);font-size:12px;font-weight:600;position:sticky;top:4px;z-index:1}
.sys{align-self:center;color:var(--text-3);font-size:12.5px;margin:8px 0}

.m{display:flex;gap:8px;align-items:flex-end;margin-top:2px;max-width:100%}
.m.first{margin-top:10px}
.m .av-slot{width:34px;flex-shrink:0}
.m.own{flex-direction:row-reverse}
.m.own .av-slot{display:none}
.bub{
  position:relative;max-width:min(560px,78%);background:var(--bubble-in);border-radius:16px;padding:7px 11px 6px;
  word-wrap:break-word;overflow-wrap:anywhere;min-width:60px
}
.m.own .bub{background:var(--bubble-out)}
.m:not(.last) .bub{border-bottom-left-radius:6px}
.m.own:not(.last) .bub{border-bottom-left-radius:16px;border-bottom-right-radius:6px}
.m:not(.first) .bub{border-top-left-radius:6px}
.m.own:not(.first) .bub{border-top-left-radius:16px;border-top-right-radius:6px}
.bub .from{font-size:13px;font-weight:600;margin-bottom:2px;cursor:pointer}
.bub .txt{white-space:pre-wrap}
.bub .txt a{color:#9dbbff;word-break:break-all}
.m.own .bub .txt a{color:#cfe0ff}
.bub .txt code{font-family:var(--mono);font-size:12.5px;background:rgba(0,0,0,.25);padding:1px 5px;border-radius:5px}
.bub .txt pre{font-family:var(--mono);font-size:12.5px;background:rgba(0,0,0,.28);padding:8px 10px;border-radius:8px;overflow-x:auto;margin:4px 0;white-space:pre}
.bub .txt.enc-fail{color:var(--text-3);font-style:italic}
.meta{float:right;display:inline-flex;align-items:center;gap:4px;margin:6px 0 -2px 10px;font-size:11px;color:rgba(255,255,255,.45);line-height:1;user-select:none;white-space:nowrap;position:relative;top:3px}
.m.own .meta{color:rgba(255,255,255,.6)}
.meta svg{width:14px;height:14px}
.meta .lock{width:11px;height:11px}
.m.failed .meta{color:#ff9492}
.m.pending .meta svg.clock{animation:spin 2s linear infinite}
.bub.media-only{padding:3px;background:transparent}
.m.own .bub.media-only{background:transparent}
.bub.media-only .meta{position:absolute;right:10px;bottom:10px;margin:0;top:auto;background:rgba(0,0,0,.55);padding:3px 7px;border-radius:10px;color:#fff;float:none}
.m.hl .bub{animation:hl 1.2s ease}
@keyframes hl{0%,40%{box-shadow:0 0 0 3px rgba(79,124,255,.6)}100%{box-shadow:0 0 0 3px transparent}}

.atts{display:flex;flex-direction:column;gap:4px;margin:2px -7px 4px}
.bub.media-only .atts{margin:0}
.att-img{display:block;position:relative;border-radius:12px;overflow:hidden;background:var(--panel-2);cursor:zoom-in;max-width:100%}
.att-img img,.att-img video{display:block;width:100%;height:100%;object-fit:cover}
.att-img.loading::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.05),transparent);animation:shimmer 1.2s infinite}
@keyframes shimmer{from{transform:translateX(-100%)}to{transform:translateX(100%)}}
.att-video{border-radius:12px;overflow:hidden;background:#000;max-width:100%}
.att-video video{display:block;width:100%;max-height:420px}
.att-audio{padding:0 7px}
.att-audio audio{width:280px;max-width:100%;height:40px}
.att-file{display:flex;align-items:center;gap:10px;padding:6px 8px;margin:0 7px;border-radius:10px;background:rgba(0,0,0,.18);text-decoration:none;color:inherit;min-width:0;max-width:340px}
.att-file:hover{background:rgba(0,0,0,.28)}
.att-file .fi{width:40px;height:40px;border-radius:10px;background:var(--accent);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.att-file .fi svg{width:20px;height:20px}
.att-file .fn{font-weight:600;font-size:13.5px}
.att-file .fs{font-size:12px;color:var(--text-3)}
.m.own .att-file .fs{color:rgba(255,255,255,.6)}

.jump{position:absolute;right:18px;bottom:14px;width:44px;height:44px;border-radius:50%;background:var(--panel-2);border:1px solid var(--line-2);color:var(--text);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);transition:opacity .15s,transform .15s;z-index:3}
.jump.off{opacity:0;transform:translateY(10px);pointer-events:none}
.jump .badge{position:absolute;top:-6px;right:-4px}

/* composer */
.composer{flex-shrink:0;background:var(--panel);border-top:1px solid var(--line);padding:8px 10px calc(8px + var(--sab))}
.composer-inner{max-width:860px;margin:0 auto}
.bar{display:flex;align-items:center;gap:10px;padding:6px 10px 8px;margin-bottom:6px;border-bottom:1px solid var(--line)}
.bar .bar-ic{color:var(--accent)}
.bar .bar-t{font-size:12.5px;font-weight:600;color:var(--accent)}
.bar .bar-s{font-size:13px;color:var(--text-2)}
.chips{display:flex;gap:8px;overflow-x:auto;padding:2px 2px 8px}
.chip{position:relative;display:flex;align-items:center;gap:8px;background:var(--panel-2);border:1px solid var(--line-2);border-radius:10px;padding:6px 30px 6px 6px;flex-shrink:0;max-width:220px}
.chip .thumb{width:36px;height:36px;border-radius:7px;object-fit:cover;background:var(--bg-2);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--text-2)}
.chip .thumb svg{width:18px;height:18px}
.chip .cn{font-size:12.5px;font-weight:600}
.chip .cs{font-size:11.5px;color:var(--text-3)}
.chip .x{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:24px;height:24px;border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--text-3)}
.chip .x:hover{background:var(--hover);color:var(--text)}
.chip .x svg{width:14px;height:14px}
.chip .prog{position:absolute;left:0;bottom:0;height:2px;background:var(--accent);border-radius:2px;transition:width .15s}
.chip.err{border-color:rgba(239,83,80,.5)}
.row-compose{display:flex;align-items:flex-end;gap:6px}
.row-compose textarea{
  flex:1;min-width:0;resize:none;background:var(--bg-2);border:1px solid var(--line-2);border-radius:20px;
  padding:9px 14px;max-height:180px;min-height:40px;line-height:1.4;outline:none;overflow-y:auto;font-size:15px
}
.row-compose textarea:focus{border-color:var(--line-2)}
.send{width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.send:hover:not(:disabled){background:var(--accent-2)}
.send svg{width:20px;height:20px}
.readonly-bar{text-align:center;color:var(--text-3);padding:10px;font-size:13px}
.join-bar{display:flex;justify-content:center;padding:4px}
.typing-line{height:18px;font-size:12px;color:var(--accent);padding:0 16px;max-width:860px;margin:0 auto;width:100%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.drop{position:absolute;inset:8px;border:2px dashed var(--accent);border-radius:16px;background:rgba(14,17,22,.85);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;color:var(--accent);z-index:10;pointer-events:none}

/* ---------- overlays ---------- */
.backdrop{position:fixed;inset:0;background:rgba(5,7,10,.6);display:flex;align-items:center;justify-content:center;padding:16px;z-index:100;animation:fade .15s ease}
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.98)}}
.modal{width:100%;max-width:440px;max-height:min(720px,calc(100dvh - 32px));background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;animation:pop .18s ease;overflow:hidden}
.modal.wide{max-width:520px}
.modal-head{display:flex;align-items:center;gap:8px;padding:14px 12px 10px 20px;flex-shrink:0}
.modal-head h3{flex:1;font-size:17px;font-weight:700;min-width:0}
.modal-body{padding:4px 20px 20px;overflow-y:auto;min-height:0;flex:1}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;padding:12px 20px 16px;border-top:1px solid var(--line);flex-shrink:0}

.urow{display:flex;align-items:center;gap:12px;padding:8px 10px;border-radius:10px;cursor:pointer;margin:0 -10px}
.urow:hover{background:var(--hover)}
.urow .n{font-weight:600}
.urow .s{font-size:12.5px;color:var(--text-3)}
.urow .s.on{color:var(--accent)}
.urow .tag{font-size:11px;font-weight:700;color:var(--accent);background:var(--accent-soft);padding:2px 7px;border-radius:6px}
.urow.static{cursor:default}
.urow.static:hover{background:none}

.profile-top{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:4px 0 14px}
.profile-top .pn{font-size:19px;font-weight:700;margin-top:6px}
.profile-top .ps{color:var(--text-3);font-size:13px}
.profile-top .ps.on{color:var(--accent)}
.kv{background:var(--bg-2);border-radius:12px;padding:4px 14px;margin-bottom:12px}
.kv > div{padding:10px 0;border-bottom:1px solid var(--line)}
.kv > div:last-child{border-bottom:0}
.kv .k{font-size:12px;color:var(--text-3)}
.kv .v{white-space:pre-wrap;overflow-wrap:anywhere}
.actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:4px 0 14px}
.section-t{font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--text-3);margin:16px 0 6px;display:flex;align-items:center;gap:8px}
.section-t .grow{flex:1}
.av-edit{position:relative;cursor:pointer}
.av-edit .ov{position:absolute;inset:0;border-radius:50%;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s;color:#fff}
.av-edit:hover .ov{opacity:1}
.av-edit .ov svg{width:26px;height:26px}
.colors{display:flex;gap:8px;flex-wrap:wrap}
.colors button{width:30px;height:30px;border-radius:50%;border:2px solid transparent;box-shadow:inset 0 0 0 2px var(--panel)}
.colors button.on{border-color:#fff}
.switch-row{display:flex;align-items:center;gap:10px;padding:8px 0;cursor:pointer}
.switch-row input{width:18px;height:18px;accent-color:var(--accent)}

.menu{position:fixed;z-index:200;min-width:190px;background:var(--panel-2);border:1px solid var(--line-2);border-radius:12px;box-shadow:var(--shadow);padding:5px;animation:pop .12s ease}
.menu button{display:flex;align-items:center;gap:10px;width:100%;padding:9px 12px;border-radius:8px;text-align:left;font-size:14px}
.menu button:hover{background:var(--hover)}
.menu button.danger{color:#ff7b78}
.menu button svg{width:17px;height:17px;color:var(--text-2)}
.menu button.danger svg{color:#ff7b78}

.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:150;display:flex;align-items:center;justify-content:center;animation:fade .15s}
.lightbox img{max-width:96vw;max-height:88dvh;object-fit:contain;border-radius:4px}
.lightbox .lb-bar{position:absolute;top:calc(8px + var(--sat));right:8px;display:flex;gap:6px}
.lightbox .icon-btn{background:rgba(255,255,255,.08);color:#fff}

#toasts{position:fixed;left:50%;bottom:calc(24px + var(--sab));transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;z-index:300;pointer-events:none;width:max-content;max-width:calc(100vw - 32px)}
.toast{background:#262e3f;border:1px solid var(--line-2);padding:10px 16px;border-radius:10px;box-shadow:var(--shadow);font-size:13.5px;animation:pop .2s ease}
.toast.err{border-color:rgba(239,83,80,.5)}

/* calls */
.call{position:fixed;inset:0;z-index:180;background:#07090c;display:flex;flex-direction:column;align-items:center;justify-content:center;animation:fade .2s}
.call video.remote{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#000;display:none}
.call video.local{position:absolute;right:16px;top:calc(16px + var(--sat));width:min(28vw,200px);aspect-ratio:3/4;object-fit:cover;border-radius:12px;background:#111;display:none;transform:scaleX(-1);box-shadow:var(--shadow)}
.call.has-remote video.remote,.call.has-local video.local{display:block}
.call .who{position:relative;display:flex;flex-direction:column;align-items:center;gap:12px}
.call.has-remote .who{display:none}
.call .cn{font-size:22px;font-weight:700}
.call .cs{color:var(--text-2)}
.call .ctrls{position:absolute;bottom:calc(32px + var(--sab));display:flex;gap:18px}
.call .ctrls button{width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(8px)}
.call .ctrls button.off{background:#fff;color:#111}
.call .ctrls button.hang{background:var(--danger)}
.call .ctrls button.accept{background:var(--ok)}
.call .ctrls svg{width:24px;height:24px}

/* ---------- responsive ---------- */
@media (min-width:1280px){
  :root{--sidebar-w:380px}
}
@media (max-width:820px){
  .app{grid-template-columns:50% 50%;width:200%;transition:transform .25s cubic-bezier(.2,.8,.2,1);will-change:transform}
  .app.in-chat{transform:translateX(-50%)}
  .sidebar{border-right:0}
  .chat-head .back{display:inline-flex}
  .bub{max-width:86%}
  .msgs-inner{padding:0 10px}
  .m .av-slot{width:30px}
  .m .av-slot .av{--s:30px}
  .backdrop.sheet{align-items:flex-end;padding:0}
  .backdrop.sheet .modal{max-width:none;border-radius:18px 18px 0 0;max-height:calc(100dvh - 40px - var(--sat));padding-bottom:var(--sab);border-bottom:0}
  .modal-foot{padding-bottom:calc(16px + var(--sab))}
  .row-compose textarea{font-size:16px}
  .input{font-size:16px}
}
@media (hover:none){
  .citem:hover,.urow:hover,.icon-btn:hover:not(:disabled),.me-btn:hover,.chat-head .who:hover{background:transparent}
  .citem.on{background:var(--active)}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}