*{box-sizing:border-box}html,body{margin:0;height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}body{background:#101827}.app{--bg:#101827;--panel:#172235;--panel2:#1c2a40;--text:#edf3fc;--muted:#9baabe;--border:#2b3950;--accent:#6d8eff;--mine:#304b83;--bubble:#202e45;--message-width:80%;--font-size:15px;display:flex;height:100dvh;min-height:320px;background:var(--bg);color:var(--text)}button,textarea,select,input{font:inherit}button{cursor:pointer}.sidebar{width:235px;flex:0 0 235px;background:var(--panel);border-right:1px solid var(--border);padding:24px 14px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:9px;padding:0 10px 32px;font-size:19px}.brand-dot{display:inline-block;width:24px;height:24px;border:6px solid var(--accent);border-radius:9px}.section-label{font-size:10px;letter-spacing:1.4px;color:var(--muted);padding:2px 11px 13px}.nav-item{width:100%;border:0;border-radius:10px;text-align:left;padding:12px;background:transparent;color:var(--text);display:flex;gap:12px;align-items:center}.nav-item.active{background:var(--panel2)}.nav-bottom{margin-top:auto;font-size:12px;color:var(--muted);padding:12px}.workspace{display:flex;flex:1;flex-direction:column;min-width:0}.topbar{height:76px;flex:none;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding:0 25px;background:var(--panel)}.header-left{display:flex;align-items:center;gap:13px}.avatar{width:42px;height:42px;display:grid;place-items:center;border-radius:15px;background:var(--accent);color:#fff;font-weight:800}.chat-title{font-size:15px;font-weight:750}.subtitle{font-size:12px;margin-top:5px;color:var(--muted)}.status-pill{font-size:9px;letter-spacing:.8px;margin-left:6px;color:var(--accent);vertical-align:middle}.icon-button{border:0;background:transparent;color:var(--muted);font-size:24px;width:40px;height:40px;border-radius:10px}.icon-button:hover{background:var(--panel2);color:var(--text)}#menuButton,.close-nav{display:none}.messages{flex:1;min-height:0;overflow:auto;display:flex;flex-direction:column;gap:16px;padding:35px max(20px,calc((100% - 780px)/2)) 25px}.day-label{font-size:11px;font-weight:600;color:var(--muted);text-align:center;margin:0 auto 12px}.message{max-width:var(--message-width);padding:13px 16px;border-radius:17px 17px 17px 5px;background:var(--bubble);font-size:var(--font-size);line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;align-self:flex-start}.message.mine{align-self:flex-end;background:var(--mine);border-radius:17px 17px 5px 17px}.message time{display:block;margin-top:7px;text-align:right;font-size:10px;opacity:.6}.composer{display:flex;align-items:flex-end;gap:12px;padding:14px max(20px,calc((100% - 780px)/2)) calc(18px + env(safe-area-inset-bottom));border-top:1px solid var(--border);background:var(--panel)}.composer textarea{flex:1;min-width:0;max-height:140px;resize:none;padding:13px 16px;background:var(--panel2);border:1px solid var(--border);border-radius:14px;color:var(--text);outline:none;font-size:14px;line-height:1.45}.composer textarea:focus{border-color:var(--accent)}.composer textarea::placeholder{color:var(--muted)}.send-button{width:46px;height:46px;flex:none;border:0;border-radius:14px;background:var(--accent);color:white;font-size:22px}.send-button:hover{filter:brightness(1.1)}.app.send-left .composer{flex-direction:row-reverse}.overlay{display:none;position:fixed;inset:0;background:#0008;z-index:10}.settings{position:fixed;right:0;top:0;bottom:0;width:min(390px,100vw);background:var(--panel);border-left:1px solid var(--border);z-index:11;transform:translateX(105%);transition:transform .2s ease;box-shadow:-15px 0 55px #0002;display:flex;flex-direction:column}.app.settings-open .settings{transform:translateX(0)}.app.settings-open .overlay,.app.nav-open .overlay{display:block}.settings-header{padding:23px;display:flex;justify-content:space-between;align-items:flex-start;border-bottom:1px solid var(--border)}.settings-header strong{font-size:20px}.settings-header p{color:var(--muted);font-size:12px;margin:7px 0 0}.settings-body{padding:23px;overflow:auto}.field{display:flex;flex-direction:column;gap:10px;font-size:13px;margin-bottom:22px}.field output{color:var(--muted)}.field select{width:100%;background:var(--panel2);color:var(--text);padding:10px;border:1px solid var(--border);border-radius:9px}.field input[type=color]{width:100%;height:42px;border:1px solid var(--border);border-radius:8px;padding:3px;background:var(--panel2)}.field input[type=range]{width:100%;accent-color:var(--accent)}.note{font-size:12px;line-height:1.6;color:var(--muted);background:var(--panel2);padding:13px;border-radius:10px}.actions{display:grid;gap:9px;margin-top:20px}.actions button{border:1px solid var(--border);border-radius:9px;background:var(--panel2);color:var(--text);padding:11px}.actions .danger{color:#ff9696}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:720px){.sidebar{position:fixed;z-index:11;top:0;bottom:0;left:0;transform:translateX(-105%);transition:transform .2s;width:min(290px,85vw)}.app.nav-open .sidebar{transform:translateX(0)}#menuButton,.close-nav{display:block}.close-nav{margin-left:auto}.topbar{padding:0 12px;height:67px}.avatar{width:37px;height:37px}.messages{padding:24px 14px 20px}.composer{padding:11px 12px calc(12px + env(safe-area-inset-bottom))}.message{max-width:min(var(--message-width),95%)}.settings-body{padding:20px}}@media(prefers-reduced-motion:reduce){.settings,.sidebar{transition:none}}

/* Telegram viewport: preserve composer visibility when the mobile keyboard opens. */
.app{height:var(--tg-viewport-height,100dvh)}