:root{--bg:#fff;--bg2:#f4f4f5;--bg3:#e9ecef;--fg:#16191c;--fg2:#707579;--acc:#3390ec;--acc2:#2a7fd4;--on-acc:#fff;--mine:#eeffde;--other:#fff;--chat-bg:#e6ebee;--line:#dfe1e5;--bad:#e53935;--ok:#2e7d32;--shadow:0 6px 24px rgba(0,0,0,.18);color-scheme:light}
[data-theme=dark]{--bg:#212121;--bg2:#181818;--bg3:#2c2c2c;--fg:#f5f5f5;--fg2:#a0a4a8;--acc:#8774e1;--acc2:#7664d0;--mine:#2b5278;--other:#2b2b2b;--chat-bg:#0f0f0f;--line:#333;--shadow:0 6px 24px rgba(0,0,0,.6);color-scheme:dark}
*{box-sizing:border-box}html,body{height:100%;margin:0}
body{font:15px/1.45 system-ui,-apple-system,"Segoe UI",Vazirmatn,Tahoma,sans-serif;background:var(--bg2);color:var(--fg);-webkit-text-size-adjust:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
input,select,textarea{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:8px 10px;width:100%;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--acc)}
input[type=checkbox]{width:auto}
.hidden{display:none!important}
.grow{flex:1;min-width:0}
a{color:var(--acc)}
.icon{width:38px;height:38px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:18px;flex:none;color:var(--fg2)}
.icon:hover{background:var(--bg3)}
.icon.send{color:var(--acc)}
.btn{padding:8px 14px;border-radius:10px;background:var(--bg3);font-weight:500}
.btn:hover{filter:brightness(.96)}.btn.primary{background:var(--acc);color:var(--on-acc)}.btn.danger{color:var(--bad)}.btn.small{padding:3px 9px;font-size:13px}.btn.link,.link{background:none;color:var(--acc);padding:2px 6px;font-size:inherit}
.btn:disabled{opacity:.5}
.field{display:block;margin:10px 0}.field>span{display:block;font-size:13px;color:var(--fg2);margin-bottom:4px}
.check{display:flex;align-items:center;gap:6px;margin:8px 0}
.row{display:flex;align-items:center;gap:8px;margin:6px 0}.row.wrap{flex-wrap:wrap}.center{text-align:center}.hint{color:var(--fg2);font-size:13px}
.err{color:var(--bad);min-height:1.4em;font-size:14px}.ok{color:var(--ok);min-height:1.4em;font-size:14px}
hr{border:0;border-top:1px solid var(--line);margin:14px 0}
.short{width:130px}
/* auth */
.auth{min-height:100%;display:grid;place-items:center;padding:16px;background:var(--bg2)}
.auth-card{width:min(380px,100%);background:var(--bg);padding:28px;border-radius:18px;box-shadow:var(--shadow);text-align:center}
.auth-card h1{margin:.2em 0 .6em;font-size:24px}.auth-card .field{text-align:start}.auth-form .btn{width:100%;margin-top:8px}
.logo{font-size:46px}.auth-links{display:flex;flex-wrap:wrap;justify-content:center;gap:4px;margin-top:12px}.prefs{display:flex;gap:4px}
/* shell */
.app{display:flex;height:100%;background:var(--bg)}
.side{width:360px;max-width:100%;border-inline-end:1px solid var(--line);display:flex;flex-direction:column;background:var(--bg);min-height:0}
.side-h{display:flex;align-items:center;gap:6px;padding:8px;padding-top:max(8px,env(safe-area-inset-top))}
.search{border-radius:20px;background:var(--bg2);border-color:transparent}
.chat-list{flex:1;overflow-y:auto;overscroll-behavior:contain}
.chat-item{display:flex;gap:10px;align-items:center;padding:8px 12px;cursor:pointer;border-radius:10px;margin:0 6px}
.chat-item:hover,.chat-item:focus-visible{background:var(--bg2);outline:none}.chat-item.active{background:var(--acc);color:var(--on-acc)}
.chat-item.active .ci-prev,.chat-item.active .ci-time{color:inherit;opacity:.85}
.av-wrap{position:relative;flex:none}.dot{position:absolute;inset-inline-end:0;bottom:0;width:12px;height:12px;border-radius:50%;background:#4caf50;border:2px solid var(--bg)}
.avatar{border-radius:50%;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:600;overflow:hidden;flex:none;user-select:none}.avatar img{width:100%;height:100%;object-fit:cover}
.ci-body{flex:1;min-width:0}.ci-top,.ci-bot{display:flex;justify-content:space-between;align-items:center;gap:6px}
.ci-title,.ci-prev{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ci-prev,.ci-time{color:var(--fg2);font-size:13px}.ci-prev{flex:1}
.badge{background:var(--acc);color:var(--on-acc);border-radius:12px;min-width:22px;padding:0 6px;font-size:12px;text-align:center;line-height:22px}.badge.dim{background:var(--fg2)}
.chat-item.active .badge{background:var(--on-acc);color:var(--acc)}
.sec{padding:8px 14px 2px;color:var(--fg2);font-size:13px;font-weight:600}
.empty{padding:28px 16px;text-align:center;color:var(--fg2)}
.main{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--chat-bg)}
.placeholder{margin:auto;text-align:center;color:var(--fg2)}
.chat-h{display:flex;align-items:center;gap:6px;padding:6px 10px;padding-top:max(6px,env(safe-area-inset-top));background:var(--bg);border-bottom:1px solid var(--line)}
.hdr-main{display:flex;align-items:center;gap:10px;flex:1;min-width:0;cursor:pointer}.hdr-main b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sub{font-size:13px;color:var(--fg2)}.sub.typing{color:var(--acc)}.back{display:none}
.pin-bar{background:var(--bg);border-bottom:1px solid var(--line);padding:6px 14px;font-size:13px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.msgs-wrap{position:relative;flex:1;min-height:0;display:flex}
.msgs{flex:1;overflow-y:auto;padding:10px 12px;display:flex;flex-direction:column;gap:4px;overscroll-behavior:contain}
.latest{position:absolute;inset-inline-end:14px;bottom:12px;box-shadow:var(--shadow);background:var(--bg)}
.day{align-self:center;margin:8px 0}.day span{background:rgba(0,0,0,.35);color:#fff;border-radius:12px;padding:2px 10px;font-size:12px}
.sys{align-self:center;color:var(--fg2);font-size:13px}
.msg{display:flex;align-items:flex-end;gap:6px;max-width:min(78%,560px);align-self:flex-start;position:relative}
.msg.mine{align-self:flex-end;flex-direction:row-reverse}
.bubble{background:var(--other);border-radius:14px;padding:6px 10px 4px;min-width:60px;max-width:100%;overflow-wrap:anywhere;box-shadow:0 1px 1px rgba(0,0,0,.08)}
.msg.mine .bubble{background:var(--mine)}.msg.bare .bubble{background:none;box-shadow:none;padding:0}
.msg.sending{opacity:.7}.msg.failed .bubble{outline:1px solid var(--bad)}.flash .bubble{animation:fl 1.6s}@keyframes fl{0%,60%{outline:2px solid var(--acc)}100%{outline:0 solid transparent}}
.sender{font-weight:600;font-size:13px;color:var(--acc)}.fwd{font-size:12px;color:var(--acc);font-style:italic}
.quote{border-inline-start:3px solid var(--acc);padding:2px 8px;margin:2px 0 4px;background:rgba(127,127,127,.12);border-radius:4px;font-size:13px;cursor:pointer;display:flex;flex-direction:column}
.text{white-space:pre-wrap}
.meta{display:flex;gap:6px;justify-content:flex-end;align-items:center;font-size:11px;color:var(--fg2);margin-top:2px}.tick.read{color:var(--acc)}
.more{opacity:0;width:24px;height:24px;border-radius:50%;color:var(--fg2);flex:none}.msg:hover .more,.more:focus{opacity:1}
@media(hover:none){.more{opacity:.6}}
.att-img{max-width:100%;max-height:340px;border-radius:10px;display:block;cursor:zoom-in;margin-bottom:4px;background:var(--bg3)}
.att-video{max-width:100%;max-height:340px;border-radius:10px;display:block}.att-audio{max-width:100%;width:260px}
.att-file{display:flex;gap:8px;align-items:center;text-decoration:none;color:inherit;padding:4px 0}.att-file small{display:block;color:var(--fg2)}.ficon{font-size:24px}
.sticker{width:160px;height:160px;object-fit:contain;display:block}.gif{max-width:260px;max-height:260px;border-radius:10px;display:block}
.full{max-width:100%;max-height:78vh;display:block;margin:auto}
.reacts{display:flex;flex-wrap:wrap;gap:4px;margin:4px 0}.react{background:rgba(127,127,127,.15);border-radius:12px;padding:1px 8px;font-size:13px}.react.mine{background:var(--acc);color:var(--on-acc)}
.voice{display:flex;align-items:center;gap:8px;min-width:210px}.vp{width:38px;height:38px;border-radius:50%;background:var(--acc);color:var(--on-acc);flex:none}
.wave{display:flex;align-items:center;gap:2px;height:32px;flex:1;cursor:pointer}.wave i{flex:1;min-width:2px;background:var(--fg2);opacity:.5;border-radius:2px}.wave i.on{background:var(--acc);opacity:1}
.vmeta{display:flex;flex-direction:column;align-items:center;font-size:11px;color:var(--fg2)}.vs{font-size:11px;color:var(--fg2)}
.typing-line{height:0}
/* composer */
.composer{background:var(--bg);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.crow{display:flex;align-items:flex-end;gap:4px;padding:6px 8px}.crow textarea{resize:none;border-radius:18px;max-height:140px;min-height:38px;line-height:1.3}
.cbar{display:flex;gap:10px;align-items:center;justify-content:center;padding:10px}.recording{align-items:center}.rt{font-variant-numeric:tabular-nums}
.reddot{width:10px;height:10px;background:var(--bad);border-radius:50%;animation:bl 1s infinite}@keyframes bl{50%{opacity:.2}}
.ctx-bar{display:flex;align-items:center;gap:8px;padding:6px 12px;border-bottom:1px solid var(--line)}.ctx-t{flex:1;min-width:0;display:flex;flex-direction:column;font-size:13px;border-inline-start:3px solid var(--acc);padding-inline-start:8px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.chips{display:flex;flex-wrap:wrap;gap:6px;padding:6px 10px}.chip{display:flex;align-items:center;gap:6px;background:var(--bg2);border-radius:10px;padding:2px 6px;max-width:100%}.chip.bad{outline:1px solid var(--bad)}.cn{max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chip progress{width:70px}
.panel{border-bottom:1px solid var(--line);height:290px;display:flex;flex-direction:column}.ptabs{display:flex;gap:4px;padding:4px 8px;border-bottom:1px solid var(--line)}.ptabs button{padding:4px 12px;border-radius:14px}.ptabs .on{background:var(--acc);color:var(--on-acc)}
.pbody{flex:1;overflow:auto;padding:6px}.egrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(38px,1fr))}.emo{font-size:24px;padding:2px;border-radius:8px}.emo:hover{background:var(--bg3)}
.sgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:6px}.stk{position:relative}.stk img{width:100%;aspect-ratio:1;object-fit:contain;cursor:pointer}.star{position:absolute;top:0;inset-inline-end:0;font-size:14px;color:var(--acc)}
.ggrid{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin-top:6px}.ggrid img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:8px;cursor:pointer;background:var(--bg3)}
/* modal / popup / toast */
.backdrop{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:12px}
.modal{background:var(--bg);border-radius:16px;width:min(420px,100%);max-height:92vh;display:flex;flex-direction:column;box-shadow:var(--shadow)}.modal.wide{width:min(560px,100%)}
.modal-h{display:flex;justify-content:space-between;align-items:center;padding:10px 12px 10px 16px;border-bottom:1px solid var(--line)}.modal-b{padding:14px 16px;overflow:auto}
.tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:10px}.tabs button{padding:5px 12px;border-radius:14px;background:var(--bg2)}.tabs .on{background:var(--acc);color:var(--on-acc)}
.results{max-height:300px;overflow:auto;margin:8px 0}.cm-i{padding:6px 0;border-bottom:1px solid var(--line)}
.popup{position:fixed;z-index:60;background:var(--bg);border-radius:12px;box-shadow:var(--shadow);padding:4px;min-width:170px}.menu{display:flex;flex-direction:column}
.mi{text-align:start;padding:8px 12px;border-radius:8px}.mi:hover{background:var(--bg2)}.react-row{display:flex;gap:2px;padding:4px;border-bottom:1px solid var(--line)}.react-pick{font-size:22px;padding:2px 4px;border-radius:8px}.react-pick:hover{background:var(--bg3)}
.toast{position:fixed;inset-inline:0;bottom:24px;margin:auto;width:max-content;max-width:90vw;background:#333;color:#fff;padding:10px 16px;border-radius:12px;z-index:90}.toast.bad{background:var(--bad)}
.net-banner{display:none;position:fixed;top:0;inset-inline:0;background:var(--bad);color:#fff;text-align:center;font-size:12px;z-index:70}.offline .net-banner{display:block}
.sect{margin:6px 0}.mrow select{width:auto}.perms{margin:8px 0}
@media(max-width:760px){.side{width:100%}.main{display:none;position:fixed;inset:0;z-index:20}.chat-open .main{display:flex}.back{display:inline-flex}.msg{max-width:90%}}
@media(min-width:761px){.chat-open .main{display:flex}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}