:root{
  --bg:#10171C;--panel:#18232B;--panel2:#1E2B34;--line:#243440;--text:#E8EEF1;--mute:#93A7B3;
  --accent:#4FD1B5;--accent-ink:#06201A;--in:#1E2B34;--out:#1F6F5F;--out-ink:#F2FBF8;--out-mute:#CDEBE4;--danger:#FF9A8F;--danger-bg:#2a1a18;
  --shadow:0 8px 28px rgba(0,0,0,.45);
  --sat:env(safe-area-inset-top,0px);--sab:env(safe-area-inset-bottom,0px);
}
:root[data-theme="light"]{
  --bg:#F2F6F7;--panel:#FFFFFF;--panel2:#EAF0F2;--line:#D9E3E7;--text:#13222B;--mute:#566C79;
  --accent:#0F7F6A;--accent-ink:#FFFFFF;--in:#FFFFFF;--out:#D5F1E8;--out-ink:#0B3A2F;--out-mute:#3C6B5E;--danger:#B3261E;--danger-bg:#FCEBEA;
  --shadow:0 8px 28px rgba(20,40,50,.18);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden;overscroll-behavior:none;background:var(--bg);color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI","Noto Sans Arabic","Noto Naskh Arabic",Tahoma,sans-serif;font-size:16px;line-height:1.7}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
#app{position:fixed;top:0;left:0;right:0;height:var(--app-h,100dvh);display:flex;overflow:hidden;background:var(--bg)}
.boot,.center{margin:auto;color:var(--mute)}
svg.i{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* panes */
.pane{display:flex;flex-direction:column;min-height:0;min-width:0;background:var(--bg)}
.pane.list{width:100%;padding-top:var(--sat)}
.pane.chat{position:absolute;top:0;bottom:0;left:0;right:0;z-index:5;padding-top:var(--sat);transform:translateX(-102%);visibility:hidden;transition:transform .22s ease,visibility 0s linear .22s}
#app.chat-open .pane.chat{transform:none;visibility:visible;transition:transform .22s ease,visibility 0s}
.pane.chat .empty-chat{display:none}
@media (min-width:860px){
  .pane.list{width:360px;flex:none;border-inline-end:1px solid var(--line)}
  .pane.chat{position:relative;flex:1;transform:none;visibility:visible;transition:none}
  .pane.chat.none .chat-body{display:none}
  .pane.chat.none .empty-chat{display:flex}
  .back{display:none!important}
}
.empty-chat{flex:1;align-items:center;justify-content:center;color:var(--mute);flex-direction:column;gap:10px}

/* headers */
.hdr{display:flex;align-items:center;gap:8px;padding:10px 12px;min-height:60px;border-bottom:1px solid var(--line);background:var(--bg)}
.hdr h1{margin:0;font-size:22px;font-weight:700;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hdr .ttl{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.35}
.hdr .ttl b{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hdr .ttl small{font-size:12px;color:var(--mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ib{width:44px;height:44px;border-radius:22px;border:0;background:transparent;display:flex;align-items:center;justify-content:center;padding:0;color:var(--text);flex:none}
.ib:hover,.ib:focus-visible{background:var(--panel)}
.ib.line{border:1px solid var(--line);background:var(--panel)}
.back svg{transform:none}

/* avatars */
.av{width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:19px;flex:none;color:#fff;user-select:none}
.av.sm{width:40px;height:40px;font-size:16px}

/* scroll */
.scroll{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}

/* conversation list */
.strip{margin:10px 14px 4px;padding:10px 14px;border-radius:14px;background:var(--panel);border:1px solid var(--line);color:var(--mute);font-size:13px;display:flex;gap:10px;align-items:center;line-height:1.7}
.strip svg{color:var(--accent)}
.item{display:flex;align-items:center;gap:12px;width:100%;padding:11px 16px;min-height:74px;border:0;background:transparent;text-align:start;border-bottom:1px solid color-mix(in srgb,var(--line) 60%,transparent)}
.item:hover,.item:focus-visible,.item.active{background:var(--panel)}
.item .mid{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.item .r1,.item .r2{display:flex;align-items:center;justify-content:space-between;gap:8px}
.item .nm{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.item .tm{font-size:12px;color:var(--mute);flex:none}
.item .pv{font-size:14px;color:var(--mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;unicode-bidi:plaintext}
.badge{min-width:22px;height:22px;padding:0 6px;border-radius:11px;background:var(--accent);color:var(--accent-ink);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}
.empty{padding:48px 24px;text-align:center;color:var(--mute);display:flex;flex-direction:column;align-items:center;gap:14px}
.fab{position:absolute;left:18px;bottom:calc(18px + var(--sab));height:54px;padding:0 20px;border-radius:27px;border:0;background:var(--accent);color:var(--accent-ink);font-weight:700;display:flex;align-items:center;gap:8px;box-shadow:var(--shadow);z-index:3}
.pane.list{position:relative}
.pane.list .scroll{padding-bottom:90px}

/* messages */
.msgs{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;background:var(--bg)}
.msgs-in{display:flex;flex-direction:column;justify-content:flex-end;gap:5px;min-height:100%;padding:12px 12px 10px}
.day{align-self:center;margin:10px 0 4px;padding:3px 12px;border-radius:12px;background:var(--panel);border:1px solid var(--line);font-size:12px;color:var(--mute)}
.note{align-self:center;max-width:320px;padding:8px 14px;border-radius:12px;background:var(--panel);border:1px solid var(--line);color:var(--mute);font-size:12px;text-align:center;line-height:1.8}
.b{max-width:82%;padding:7px 12px 5px;border-radius:16px;display:flex;flex-direction:column;gap:2px;position:relative;word-break:break-word;user-select:text;-webkit-touch-callout:none}
.b.me{align-self:flex-start;background:var(--out);color:var(--out-ink);border-end-start-radius:4px}
.b.them{align-self:flex-end;background:var(--in);color:var(--text);border-end-end-radius:4px;border:1px solid var(--line)}
.b .who{font-size:12px;font-weight:700;color:var(--accent)}
.b .tx{white-space:pre-wrap;overflow-wrap:anywhere;unicode-bidi:plaintext;font-size:15.5px;line-height:1.8}
.b .tx.lock{font-style:italic;opacity:.75}
.b .mt{font-size:11px;opacity:.75;align-self:flex-end}
.b.me .mt{color:var(--out-mute);opacity:1}
.b.them .mt{color:var(--mute);opacity:1;align-self:flex-start}
.b img.pic{display:block;max-width:100%;width:240px;max-height:300px;object-fit:cover;border-radius:10px;background:var(--panel2);min-height:80px}
.fchip{display:flex;align-items:center;gap:10px;background:color-mix(in srgb,currentColor 10%,transparent);border:0;border-radius:12px;padding:8px 10px;min-height:48px;text-align:start;width:100%}
.fchip .fi{width:40px;height:40px;border-radius:10px;background:color-mix(in srgb,currentColor 14%,transparent);display:flex;align-items:center;justify-content:center;flex:none}
.fchip .fn{display:flex;flex-direction:column;min-width:0;line-height:1.4}
.fchip .fn b{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px;font-size:14px;unicode-bidi:plaintext}
.fchip .fn small{font-size:12px;opacity:.8}
.more{align-self:center;border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:4px 14px;font-size:13px;color:var(--mute)}
.banner{padding:6px 14px;font-size:13px;text-align:center;background:var(--danger-bg);color:var(--danger)}

/* composer */
.comp{display:flex;align-items:flex-end;gap:6px;padding:8px 10px calc(8px + var(--sab));border-top:1px solid var(--line);background:var(--bg)}
.comp textarea{flex:1;min-width:0;resize:none;border:1px solid var(--line);background:var(--panel);border-radius:22px;padding:10px 16px;min-height:44px;max-height:132px;line-height:1.6;font-size:16px;outline:none;overflow-y:auto;unicode-bidi:plaintext}
.comp textarea:focus{border-color:var(--accent)}
.send{background:var(--accent);color:var(--accent-ink)}
.send:disabled{opacity:.45}
.attach{display:flex;align-items:center;gap:10px;padding:8px 14px;border-top:1px solid var(--line);background:var(--panel);font-size:14px}
.attach span{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;unicode-bidi:plaintext}
.emo{display:grid;grid-template-columns:repeat(8,1fr);gap:2px;padding:8px 10px;border-top:1px solid var(--line);background:var(--panel);max-height:168px;overflow-y:auto;overscroll-behavior:contain}
.emo button{border:0;background:transparent;font-size:24px;height:44px;border-radius:10px;line-height:1}
.emo button:hover,.emo button:focus-visible{background:var(--panel2)}

/* sheets & overlays */
.ov{position:absolute;inset:0;z-index:30;background:rgba(0,0,0,.55);display:flex;align-items:flex-end;justify-content:center}
.sheet{width:100%;max-width:520px;max-height:90%;display:flex;flex-direction:column;background:var(--panel);border-radius:22px 22px 0 0;padding-bottom:var(--sab);box-shadow:var(--shadow)}
.sheet .sh{display:flex;align-items:center;gap:8px;padding:10px 12px 6px 16px}
.sheet .sh h2{margin:0;font-size:18px;flex:1}
.sheet .sb{padding:4px 16px 16px;overflow-y:auto;overscroll-behavior:contain;min-height:0}
.fld{display:flex;flex-direction:column;gap:6px;margin:12px 0}
.fld label{font-size:14px;font-weight:500}
.inp{height:50px;border-radius:14px;border:1px solid var(--line);background:var(--bg);padding:0 14px;font-size:16px;outline:none;width:100%;unicode-bidi:plaintext}
.inp:focus{border-color:var(--accent)}
.hint{font-size:13px;color:var(--mute);line-height:1.8}
.err{font-size:14px;color:var(--danger);background:var(--danger-bg);border-radius:12px;padding:8px 12px;margin:8px 0}
.btn{height:52px;border-radius:16px;border:0;background:var(--accent);color:var(--accent-ink);font-weight:700;font-size:16px;width:100%;display:flex;align-items:center;justify-content:center;gap:8px;padding:0 16px}
.btn:disabled{opacity:.5}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--text);font-weight:500}
.btn.danger{background:var(--danger-bg);color:var(--danger);border:1px solid color-mix(in srgb,var(--danger) 40%,transparent)}
.row{display:flex;gap:10px;margin:10px 0}
.row>*{flex:1}
.menu{display:flex;flex-direction:column;gap:2px;margin:6px 0}
.menu button{display:flex;align-items:center;gap:12px;width:100%;min-height:52px;border:0;background:transparent;border-radius:12px;padding:0 10px;text-align:start;font-size:16px}
.menu button:hover,.menu button:focus-visible{background:var(--panel2)}
.menu .d{color:var(--danger)}
.pick{display:flex;align-items:center;gap:12px;min-height:56px;padding:0 6px;border-radius:12px;width:100%;border:0;background:transparent;text-align:start}
.pick:hover,.pick:focus-visible{background:var(--panel2)}
.pick .ck{width:24px;height:24px;border-radius:7px;border:2px solid var(--line);margin-inline-start:auto;display:flex;align-items:center;justify-content:center;flex:none}
.pick.on .ck{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.pick .on-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);margin-inline-start:auto}
.sw{display:flex;gap:8px;margin:8px 0}
.sw button{flex:1;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--bg)}
.sw button.on{border-color:var(--accent);color:var(--accent);font-weight:700}
.toast{position:absolute;top:calc(14px + var(--sat));left:50%;transform:translateX(-50%);z-index:80;background:var(--panel2);color:var(--text);border:1px solid var(--line);border-radius:14px;padding:10px 16px;box-shadow:var(--shadow);max-width:90%;font-size:14px;text-align:center}

/* full screens (join / lock / fatal) */
.full{position:absolute;inset:0;z-index:60;background:var(--bg);display:flex;flex-direction:column;align-items:center;overflow-y:auto;overscroll-behavior:contain;padding:calc(32px + var(--sat)) 24px calc(24px + var(--sab))}
.full .in{width:100%;max-width:400px;display:flex;flex-direction:column;gap:6px;margin:auto 0}
.logo{width:84px;height:84px;border-radius:26px;background:var(--panel);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--accent);margin:0 auto 12px}
.logo svg{width:42px;height:42px}
.full h1{text-align:center;margin:4px 0;font-size:24px}
.full p{text-align:center;color:var(--mute);margin:4px 0 10px;line-height:1.9;font-size:15px}
.dots{display:flex;gap:16px;justify-content:center;margin:20px 0 26px;height:16px}
.dots i{width:16px;height:16px;border-radius:50%;border:2px solid var(--mute);display:block}
.dots i.on{background:var(--accent);border-color:var(--accent)}
.pad{direction:ltr;display:grid;grid-template-columns:repeat(3,76px);gap:14px;justify-content:center}
.pad button{width:76px;height:76px;border-radius:50%;border:1px solid var(--line);background:var(--panel);font-size:28px;font-weight:500;padding:0;display:flex;align-items:center;justify-content:center}
.pad button.x{border:0;background:transparent;color:var(--mute)}
.shake{animation:shake .35s}
@keyframes shake{20%{transform:translateX(-8px)}40%{transform:translateX(8px)}60%{transform:translateX(-5px)}80%{transform:translateX(5px)}}
.spin{width:20px;height:20px;border-radius:50%;border:2.5px solid currentColor;border-top-color:transparent;animation:sp .8s linear infinite;display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}
button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}