:root{color-scheme:dark;--bg:#0d0e11;--panel:#14161a;--line:#23262d;--text:#e8e9ec;--muted:#868b96;--accent:#7be0d0;--on:#06221e;
--mine:color-mix(in srgb,var(--accent) 20%,var(--bg));--theirs:var(--panel);--ease:cubic-bezier(.4,0,.2,1);--t:.22s;
--safe-t:env(safe-area-inset-top,0px);--safe-b:env(safe-area-inset-bottom,0px)}
:root[data-theme="light"]{color-scheme:light;--bg:#f5f6f8;--panel:#fff;--line:#e3e6ea;--text:#15171c;--muted:#6b7280}
@media (prefers-color-scheme:light){:root[data-theme="auto"]{color-scheme:light;--bg:#f5f6f8;--panel:#fff;--line:#e3e6ea;--text:#15171c;--muted:#6b7280}}
*{box-sizing:border-box}
[hidden]{display:none!important}   /* without this, display:grid/flex rules below would show "hidden" screens */
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--text);font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow:hidden;padding:var(--safe-t) 0 var(--safe-b);transition:background var(--t) var(--ease),color var(--t) var(--ease)}
input,select,button{font:inherit;color:inherit}
input,select{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:.65rem .8rem;outline:none;min-width:0;transition:border-color var(--t) var(--ease),background var(--t) var(--ease)}
input:focus,select:focus{border-color:var(--accent)}
select{padding:.35rem .5rem;font-size:13px}option{color:var(--text);background:var(--panel)}
button{border:0;background:none;cursor:pointer;border-radius:8px;padding:.55rem .9rem;transition:background .15s var(--ease),color .15s var(--ease),filter .15s var(--ease),transform .1s var(--ease)}
button:active{transform:scale(.97)}
button.primary{background:var(--accent);color:var(--on);font-weight:600}button.primary:hover{filter:brightness(1.08)}
button.link{color:var(--muted);padding:.3rem .5rem}button.link:hover{color:var(--text)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.muted{color:var(--muted);font-size:13px}.err{color:#ff9a8a;min-height:1.2em;margin:0;font-size:13px}

@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes slidein{from{opacity:0;transform:translateX(28px)}to{opacity:1;transform:none}}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:none}}
@keyframes drop{from{opacity:0;transform:translateY(-10px);max-height:0}to{opacity:1;transform:none;max-height:90px}}

/* Segmented EN | RU control */
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{padding:.2rem .6rem;border-radius:0;font-size:12px;width:auto;color:var(--muted)}.seg button.on{background:var(--accent);color:var(--on)}

/* Sign-in / registration */
.auth{height:100%;display:grid;place-items:center;padding:1rem}.auth-lang{position:fixed;top:14px;right:16px}
#a-form{width:min(100%,320px);display:grid;gap:.7rem;animation:rise .35s var(--ease)}
#a-form h1{margin:0 0 .6rem;font-size:1.5rem;font-weight:700;letter-spacing:-.01em}

/* App frame: brand left, profile fixed top-right */
.app{display:flex;flex-direction:column;height:100%;animation:fade .3s var(--ease)}
.topbar{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 16px;border-bottom:1px solid var(--line);flex:none}
.brand{font-weight:700;font-size:1.15rem;letter-spacing:-.01em}
.profile{position:relative}
.profile-btn{display:flex;align-items:center;gap:8px;padding:.25rem .6rem .25rem .3rem;border-radius:999px}.profile-btn:hover{background:var(--panel)}
.chev{color:var(--muted);font-size:11px;transition:transform var(--t) var(--ease)}.profile-btn[aria-expanded=true] .chev{transform:rotate(180deg)}
.menu{position:absolute;right:0;top:calc(100% + 8px);min-width:210px;z-index:20;display:grid;gap:2px;padding:6px;border:1px solid var(--line);border-radius:12px;
 background:color-mix(in srgb,var(--panel) 90%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 12px 32px rgba(0,0,0,.3);
 opacity:0;visibility:hidden;transform:translateY(-6px) scale(.97);transform-origin:top right;
 transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),visibility 0s linear var(--t)}
.menu.open{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.menu>button{text-align:left;width:100%}.menu>button:hover{background:var(--line)}
.lang{display:flex;align-items:center;justify-content:space-between;padding:.35rem .9rem;color:var(--muted);font-size:13px}

/* Chat page */
.shell{display:grid;grid-template-columns:320px 1fr;flex:1;min-height:0}
.side,.thread{display:flex;flex-direction:column;min-height:0;overflow:hidden}
.side{border-right:1px solid var(--line);padding:12px;gap:10px}
.thread header{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line)}.thread header>div{flex:1}
.thread.swap{animation:fade .25s var(--ease)}
.list{list-style:none;margin:0;padding:0;overflow:auto}#chats{flex:1}
.list li{display:flex;gap:10px;align-items:center;padding:.6rem;border-radius:8px;cursor:pointer;transition:background .15s var(--ease)}
.list li:hover,.list li.on{background:var(--panel)}.list li.enter{animation:drop .35s var(--ease)}.list .grow{flex:1;min-width:0}
.list .pv{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.av{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:600;background:var(--line);flex:none;overflow:hidden}
.av img{width:100%;height:100%;object-fit:cover}.av.sm{width:30px;height:30px;font-size:13px}.av.big{width:72px;height:72px;font-size:28px}
.badge{background:var(--accent);color:var(--on);border-radius:99px;padding:0 .5rem;font-size:12px;font-weight:600}
.msgs{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:4px}
.m{max-width:min(74%,520px);padding:.45rem .75rem;border-radius:12px;background:var(--theirs);position:relative;word-wrap:break-word}
.m.new{animation:pop .22s var(--ease)}.m.mine{align-self:flex-end;background:var(--mine)}
.m .meta{font-size:11px;color:var(--muted);text-align:right}.m .read{color:var(--accent)}.m.del{font-style:italic;color:var(--muted)}
.m .quote{border-left:2px solid var(--accent);padding-left:.5rem;margin-bottom:.25rem;color:var(--muted);font-size:13px}
.m img{max-width:100%;border-radius:8px;display:block}.m audio,.m video{max-width:100%}
.m .acts{position:absolute;top:-14px;right:8px;display:none;background:var(--panel);border:1px solid var(--line);border-radius:8px}
.m:hover .acts,.m:focus-within .acts{display:flex;animation:fade .15s var(--ease)}.acts button{padding:.15rem .45rem;font-size:12px}
.thread footer{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);align-items:center}.thread footer input{flex:1}
.attach{cursor:pointer;color:var(--muted);padding:0 .3rem;font-size:20px;transition:color .15s}.attach:hover{color:var(--text)}
.ctx{display:flex;justify-content:space-between;align-items:center;padding:.3rem 1rem;color:var(--muted);font-size:13px;border-top:1px solid var(--line);animation:rise .2s var(--ease)}
.empty{display:grid;place-items:center}.back{display:none}

/* Settings dialog: fades and rises in, and out again (JS toggles .open, then closes after the transition) */
dialog{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:14px;padding:1.2rem;width:min(92vw,360px);
 opacity:0;transform:translateY(12px) scale(.97);transition:opacity var(--t) var(--ease),transform var(--t) var(--ease)}
dialog.open{opacity:1;transform:none}
dialog::backdrop{background:rgba(0,0,0,0);-webkit-backdrop-filter:blur(0);backdrop-filter:blur(0);transition:background var(--t) var(--ease),backdrop-filter var(--t) var(--ease)}
dialog.open::backdrop{background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
#s-form{display:grid;gap:.8rem}#s-form h2{margin:0;font-size:1.1rem}
#s-form label,.lbl{display:grid;gap:.25rem;color:var(--muted);font-size:13px}#s-form input,#s-form select{color:var(--text);background:var(--bg)}
.s-av{display:flex;align-items:center;gap:12px}.s-av label{display:block;cursor:pointer;color:var(--accent)}
.swatches{display:flex;gap:10px;padding-top:.2rem}.swatches button{width:28px;height:28px;border-radius:50%;padding:0;border:2px solid transparent;transition:transform .15s var(--ease),border-color .15s}
.swatches button:hover{transform:scale(1.12)}.swatches button.on{border-color:var(--text)}
.row{display:flex;justify-content:flex-end;gap:.5rem}


/* ---- Auth steps ---- */
#a-form input{width:100%;text-overflow:ellipsis}#a-form .step{display:grid;gap:.7rem}.hint{font-size:12px}.code-in::placeholder{letter-spacing:normal;font-size:1rem}#a-form p{margin:0}#a-lead:empty,#a-inv:empty{display:none}
#a-inv{color:var(--accent)}.code-in{letter-spacing:.5em;text-align:center;font-size:1.3rem;font-variant-numeric:tabular-nums}
#a-resend{justify-self:start}#a-resend:disabled{opacity:.6;cursor:default}.dev{border:1px dashed var(--line);border-radius:8px;padding:.4rem .6rem}

/* ---- Sidebar tabs & panels ---- */
.tabs{display:flex;gap:2px;padding:3px;background:var(--panel);border:1px solid var(--line);border-radius:10px;flex:none}
.tabs button{flex:1;padding:.4rem .4rem;font-size:13px;color:var(--muted)}.tabs button:hover{color:var(--text)}
.tabs button.on{background:var(--accent);color:var(--on);font-weight:600}
.panel{flex:1;min-height:0;overflow:auto;display:flex;flex-direction:column;gap:10px}.panel>.list{flex:none;overflow:visible}
.inline-form{display:flex;gap:6px}.inline-form input{flex:1}.sub{margin:.4rem 0 0;font-size:13px;color:var(--muted);font-weight:600}
.list li.nohover{cursor:default}.list li.nohover:hover{background:none}
.av[data-uid]{cursor:pointer}

/* ---- Thread header: avatar + clickable name ---- */
.t-head{cursor:pointer;min-width:0}.t-head strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#t-av .av{flex:none}#t-av{cursor:pointer;display:flex}
#chat-del{font-size:15px}

/* ---- Profile & delete dialogs ---- */
.dlg-body{display:grid;gap:.8rem}.dlg-body h2{margin:0;font-size:1.1rem}.dlg-body p{margin:0}
.profile-card{text-align:center;justify-items:center}.profile-card h2{font-size:1.25rem}.profile-card .lbl{justify-items:center;width:100%}
.profile-card #p-av{display:flex}.bio{color:var(--text);font-size:15px;white-space:pre-wrap;word-break:break-word}.bio.muted{color:var(--muted)}
.row.wrap{flex-wrap:wrap;justify-content:center;width:100%}
.stack{display:grid;gap:.5rem}.stack button{padding:.65rem .9rem}
button.outline{border:1px solid var(--line)}button.outline:hover{background:var(--line)}
button.danger{background:#ff6b5a;color:#2a0a05;font-weight:600}button.danger:hover{filter:brightness(1.08)}

/* ---- Message wrapper (keyed DOM patching) ---- */
.m .mc{min-width:0}

/* ---- Voice message bubble ---- */
.vm{display:flex;align-items:center;gap:10px;min-width:min(240px,60vw)}
.vp{width:34px;height:34px;border-radius:50%;padding:0;flex:none;background:var(--accent);color:var(--on);display:grid;place-items:center;font-size:12px}
.wf{display:flex;align-items:center;gap:2px;height:30px;flex:1;min-width:0}
.wf i{flex:1;min-width:2px;border-radius:2px;background:color-mix(in srgb,var(--muted) 55%,transparent);transition:background .12s}.wf i.on{background:var(--accent)}
.vt{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;min-width:2.6em;text-align:right}

/* ---- Voice recorder bar (replaces the composer while recording / previewing) ---- */
.mic{font-size:18px;padding:.3rem .5rem}
.thread footer.recording>:not(.rec){display:none}
.rec{flex:1;display:flex;align-items:center;gap:10px;min-width:0}
.rec .dot{width:10px;height:10px;border-radius:50%;background:#ff5d5d;flex:none;animation:blink 1s infinite}
@keyframes blink{50%{opacity:.25}}
.rec-time{font-variant-numeric:tabular-nums;color:var(--muted);min-width:2.6em}
.rec .lvl{flex:1;height:6px;border-radius:3px;background:var(--line);overflow:hidden}
.rec .lvl i{display:block;height:100%;width:calc(var(--l,0)*100%);background:var(--accent);transition:width .1s linear}
.rec audio{flex:1;min-width:0;height:36px}
.rec[data-st=recording] .rv,.rec[data-st=review] .rr{display:none}

/* ---- Attachment preview card (above the composer): dark glass, ✕ in the corner ---- */
.pending{flex:none;padding:10px 12px 0;animation:rise .22s var(--ease)}
.thread.rec-on .pending{display:none}
.pending-card{position:relative;display:inline-flex;align-items:center;gap:12px;max-width:min(100%,360px);padding:6px;border-radius:16px;overflow:hidden;
 background:color-mix(in srgb,var(--panel) 58%,transparent);border:1px solid color-mix(in srgb,var(--text) 14%,transparent);
 -webkit-backdrop-filter:blur(18px) saturate(150%);backdrop-filter:blur(18px) saturate(150%);
 box-shadow:0 10px 30px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.08)}
.pending-card img{display:block;max-width:100%;max-height:170px;min-width:84px;min-height:64px;object-fit:cover;border-radius:11px}
.pending-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:20px;flex:none;background:color-mix(in srgb,var(--accent) 18%,transparent)}
.pending-info{display:grid;min-width:0;padding-right:34px}.pending-info strong{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pending-info span{font-size:12px;color:var(--muted)}
.pending.is-img .pending-info{position:absolute;left:6px;right:6px;bottom:6px;padding:18px 10px 6px;border-radius:0 0 11px 11px;color:#fff;
 background:linear-gradient(to top,rgba(0,0,0,.62),transparent)}.pending.is-img .pending-info span{color:rgba(255,255,255,.75)}
.pending-x{position:absolute;top:10px;right:10px;width:26px;height:26px;padding:0;border-radius:50%;display:grid;place-items:center;font-size:12px;line-height:1;
 background:rgba(12,13,16,.62);color:#fff;border:1px solid rgba(255,255,255,.22);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.pending-x:hover{background:rgba(255,107,90,.85)}
.pending:not(.is-img) .pending-x{top:50%;transform:translateY(-50%)}.pending:not(.is-img) .pending-x:active{transform:translateY(-50%) scale(.95)}
.pending.busy .pending-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:linear-gradient(90deg,transparent,var(--accent),transparent) 0 0/45% 100% no-repeat;animation:sweep 1s linear infinite}
.pending.busy .pending-x{display:none}.pending.busy img{opacity:.8}
@keyframes sweep{from{background-position:-60% 0}to{background-position:160% 0}}
.m img+div,.m a+div{margin-top:.3rem}

/* ---- Toast (errors for uploads / microphone) ---- */
.toast{position:fixed;left:50%;bottom:calc(84px + var(--safe-b));transform:translate(-50%,8px);z-index:50;max-width:min(92vw,420px);padding:.6rem .95rem;border-radius:12px;font-size:13px;
 background:color-mix(in srgb,var(--panel) 80%,transparent);border:1px solid color-mix(in srgb,#ff6b5a 55%,var(--line));-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
 box-shadow:0 12px 32px rgba(0,0,0,.35);opacity:0;transition:opacity var(--t) var(--ease),transform var(--t) var(--ease)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---- Voice bubble extras, avatar upload state ---- */
.vm .wf{cursor:pointer}.vm.bad .vp{background:#ff6b5a;color:#2a0a05}.vm.bad .vt{color:#ff9a8a}
.s-av.busy #s-av{opacity:.55;animation:blink 1s infinite}

@media (max-width:760px){
 .shell{grid-template-columns:1fr}.back{display:inline-block}.side{border:0}.m{max-width:86%}
 .shell.in-chat .side{display:none}.shell:not(.in-chat) #thread{display:none}#empty{display:none!important}
 .shell.in-chat .thread.swap{animation:slidein .26s var(--ease)}.shell:not(.in-chat) .side{animation:fade .25s var(--ease)}
 #me-name{display:none}
 .thread header{gap:6px;padding:10px 12px}#timer{max-width:84px}
 .vm{min-width:200px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}