:root{--bg:#0b0c0f;--bg2:#111318;--bg3:#171a21;--line:#22262f;--tx:#e8e9ec;--mut:#8a8f9c;--acc:#d4a24c;--acc2:#f0c674;--red:#e5484d;--grn:#30a46c;--r:10px}
*{box-sizing:border-box;margin:0}
html,body{height:100%;background:var(--bg);color:var(--tx);font:14px/1.6 Vazirmatn,Tahoma,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
::-webkit-scrollbar{width:8px}::-webkit-scrollbar-thumb{background:#262a33;border-radius:8px}
.logo{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--acc2),var(--acc) 60%,#8a5e1c);color:#0b0c0f;font-weight:900;font-size:20px;box-shadow:0 0 30px #d4a24c33}
.logo.sm{width:28px;height:28px;font-size:14px;border-radius:8px}
.btn{border:1px solid var(--line);background:var(--bg3);padding:10px 16px;border-radius:var(--r);cursor:pointer}
.btn.primary{background:var(--acc);border-color:var(--acc);color:#111;font-weight:700}
.btn:hover{filter:brightness(1.1)}
.icon{background:none;border:0;cursor:pointer;color:var(--mut);font-size:18px;padding:6px;border-radius:8px;display:inline-grid;place-items:center}
.icon:hover{color:var(--tx);background:var(--bg3)}.icon.danger:hover{color:var(--red)}
.err{color:var(--red);min-height:20px;font-size:13px}

/* auth */
.auth{min-height:100%;display:grid;place-items:center;background:radial-gradient(1200px 600px at 50% -10%,#d4a24c14,transparent 60%),var(--bg);padding:16px}
.auth-card{width:100%;max-width:360px;display:flex;flex-direction:column;gap:12px;padding:32px;background:var(--bg2);border:1px solid var(--line);border-radius:18px;box-shadow:0 30px 80px #000a}
.auth-card input{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;outline:0}
.auth-card input:focus{border-color:var(--acc)}
.auth-card a{color:var(--mut);font-size:13px;text-align:center;text-decoration:none}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;letter-spacing:3px}.brand small{color:var(--acc);font-size:11px}

/* layout */
.app{display:grid;grid-template-columns:260px 1fr 220px;height:100dvh}
.side{background:var(--bg2);border-left:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.side-head{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line);letter-spacing:2px}
.side-head .icon{margin-inline-start:auto}
.ch-group{padding:14px 8px 0;overflow:auto}
.ch-group.grow{flex:1}
.ch-group label,.members label{display:block;font-size:11px;color:var(--mut);padding:0 8px 6px;letter-spacing:.5px}
.ch-group ul,.members ul{list-style:none;padding:0}
.ch{display:flex;align-items:center;gap:8px;padding:7px 10px;border-radius:8px;cursor:pointer;color:var(--mut);position:relative}
.ch:hover{background:var(--bg3);color:var(--tx)}
.ch.active{background:#d4a24c18;color:var(--acc2)}
.ch .del{margin-inline-start:auto;opacity:0;font-size:12px}.ch:hover .del{opacity:.6}
.ch.unread{color:var(--tx);font-weight:700}.ch.unread:before{content:"";position:absolute;right:-8px;width:4px;height:8px;border-radius:4px;background:var(--tx)}
.vusers{list-style:none;padding:2px 0 6px 0;margin-inline-start:26px}
.vuser{display:flex;align-items:center;gap:8px;padding:3px 6px;font-size:13px;color:var(--mut)}
.vuser .avatar{width:22px;height:22px;font-size:10px;transition:box-shadow .15s}
.vuser.speaking .avatar{box-shadow:0 0 0 2px var(--grn)}
.vuser i{font-style:normal;font-size:11px;margin-inline-start:auto;opacity:.7}
.avatar{width:32px;height:32px;border-radius:50%;display:inline-grid;place-items:center;font-weight:700;color:#fff;flex:none;font-size:13px}
.voice-bar{border-top:1px solid var(--line);padding:10px 12px}
.vb-info{display:flex;align-items:center;gap:10px}.vb-info b{color:var(--grn);font-size:13px;display:block}.vb-info small{color:var(--mut)}
.vb-info .icon{margin-inline-start:auto}
.vb-ctrl{display:flex;gap:6px;margin-top:8px}.vb-ctrl .ctl{flex:1}
.dot{width:8px;height:8px;border-radius:50%;background:var(--mut);flex:none}.dot.live{background:var(--grn);box-shadow:0 0 10px var(--grn)}
.me{display:flex;align-items:center;gap:8px;padding:10px 12px;background:#0d0f13;border-top:1px solid var(--line)}
.me-name{flex:1;min-width:0}.me-name b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.me-name small{color:var(--grn);font-size:11px}
.ctl{background:var(--bg3);border:1px solid var(--line);border-radius:8px;padding:6px 8px;cursor:pointer;font-size:14px}
.ctl:hover{border-color:#333a46}.ctl.on{background:#30a46c22;border-color:var(--grn)}.ctl.off{background:#e5484d22;border-color:var(--red)}

.main{display:flex;flex-direction:column;min-width:0;min-height:0}
.top{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--bg)}
.top h2{font-size:15px;font-weight:700}.spacer{flex:1}.menu{display:none}

.chat{flex:1;display:flex;flex-direction:column;min-height:0}
.msgs{flex:1;overflow-y:auto;padding:16px 0}
.msg{display:flex;gap:12px;padding:3px 18px;position:relative}
.msg:hover{background:#ffffff05}
.msg.head{margin-top:12px}
.msg:not(.head) .avatar{visibility:hidden;height:0}
.msg .body{min-width:0;flex:1}
.msg .meta{display:flex;align-items:baseline;gap:8px}.msg .meta b{font-weight:700}.msg .meta time{color:var(--mut);font-size:11px}
.msg .txt{white-space:pre-wrap;word-wrap:break-word;color:#d6d8dd}
.msg .txt a{color:var(--acc2)}
.msg .x{position:absolute;left:12px;top:2px;opacity:0;font-size:12px}.msg:hover .x{opacity:.6}
.att{margin-top:6px;max-width:min(480px,100%)}
.att img,.att video{max-width:100%;max-height:360px;border-radius:8px;display:block;border:1px solid var(--line);cursor:zoom-in}
.att a.file{display:flex;gap:10px;align-items:center;padding:10px 12px;background:var(--bg2);border:1px solid var(--line);border-radius:8px;color:var(--tx);text-decoration:none}
.att a.file small{color:var(--mut)}
.loadmore{display:block;margin:0 auto 10px;font-size:12px}
.typing{height:20px;padding:0 20px;color:var(--mut);font-size:12px}
.composer{display:flex;align-items:flex-end;gap:6px;margin:0 16px 14px;padding:6px 8px;background:var(--bg2);border:1px solid var(--line);border-radius:12px}
.composer textarea{flex:1;background:none;border:0;outline:0;resize:none;max-height:160px;padding:8px 4px}
.upprog{height:3px;margin:0 16px 8px;background:var(--bg3);border-radius:3px;overflow:hidden}.upprog i{display:block;height:100%;width:0;background:var(--acc)}

/* video stage */
.stage{display:grid;gap:8px;padding:8px;background:#06070a;border-bottom:1px solid var(--line);grid-template-columns:repeat(auto-fit,minmax(260px,1fr));max-height:58vh;overflow:auto}
.tile{position:relative;background:#000;border-radius:10px;overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line)}
.tile video{width:100%;height:100%;object-fit:contain}
.tile span{position:absolute;bottom:6px;right:8px;background:#000a;padding:2px 8px;border-radius:6px;font-size:12px}
.tile.focus{grid-column:1/-1;aspect-ratio:auto;height:52vh}
.tile button{position:absolute;top:6px;left:6px;opacity:0}.tile:hover button{opacity:1}

.members{background:var(--bg2);border-right:1px solid var(--line);padding:14px 8px;overflow:auto}
.mem{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:8px}
.mem.off{opacity:.4}.mem small{color:var(--acc);font-size:10px}

.dlg{margin:auto;background:var(--bg2);color:var(--tx);border:1px solid var(--line);border-radius:16px;padding:24px;width:min(420px,92vw)}
.dlg::backdrop{background:#000b;backdrop-filter:blur(4px)}
.dlg form{display:flex;flex-direction:column;gap:14px}
.dlg label{display:flex;flex-direction:column;gap:6px;color:var(--mut);font-size:13px}.dlg label.row{flex-direction:row;align-items:center;color:var(--tx)}
.dlg select{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:8px}
.dlg-act{display:flex;justify-content:space-between}
.lightbox{position:fixed;inset:0;background:#000e;display:grid;place-items:center;z-index:9;cursor:zoom-out}.lightbox img{max-width:95vw;max-height:95vh}

@media (max-width:1100px){.app{grid-template-columns:240px 1fr}.members{display:none}.members.show{display:block;position:fixed;left:0;top:0;bottom:0;width:240px;z-index:5}}
@media (max-width:760px){
  .app{grid-template-columns:1fr}
  .side{position:fixed;top:0;bottom:0;right:0;width:84vw;max-width:300px;z-index:6;transform:translateX(105%);transition:transform .2s}
  .side.show{transform:none;box-shadow:-20px 0 60px #000c}
  .menu{display:inline-grid}
  .stage{grid-template-columns:1fr}
}
.voice-bar.bad .vb-info b{color:var(--acc2)}.voice-bar.bad .dot{background:var(--acc2);box-shadow:0 0 10px var(--acc2)}.q{letter-spacing:-2px;color:var(--grn);font-size:10px}
input[type=checkbox]{accent-color:var(--acc);width:16px;height:16px}