:root{
  --bg: var(--tg-theme-bg-color, #faf9f5);
  --bg2: var(--tg-theme-secondary-bg-color, #f0eee6);
  --fg: var(--tg-theme-text-color, #1f1e1d);
  --hint: var(--tg-theme-hint-color, #8a8780);
  --link: var(--tg-theme-link-color, #c96442);
  --accent: #d97757;
  --accent-fg: #fff;
  --danger: #d1453b;
  --line: color-mix(in srgb, var(--fg) 12%, transparent);
  --bubble: color-mix(in srgb, var(--accent) 14%, var(--bg));
  --code: color-mix(in srgb, var(--fg) 7%, var(--bg));
  /* низ: max из системной safe-area и значения Telegram (Bot API 8+) */
  --safe-b: max(env(safe-area-inset-bottom, 0px), var(--tg-safe-area-inset-bottom, 0px));
  /* высота приложения: JS ставит --app-h из Telegram.WebApp.viewportStableHeight / visualViewport */
  --app-h: var(--tg-viewport-stable-height, 100dvh);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden;-webkit-text-size-adjust:100%;background:var(--bg);color:var(--fg);
  font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit;color:var(--fg);background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:10px;width:100%}
.hidden{display:none!important}
.ellipsis{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;word-break:break-all}

.boot{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--hint);padding:24px;text-align:center}
.spinner{width:22px;height:22px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.screen{position:fixed;top:0;left:0;right:0;height:var(--app-h);display:flex;flex-direction:column;overflow:hidden}
.screen > *{flex-shrink:0}
.screen > .msgs,.screen > .sess-list{flex:1 1 auto;min-height:0}
.bar{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line);background:var(--bg);min-height:52px}
.bar-title{font-weight:600;font-size:17px}
.bar-mid{flex:1;min-width:0;cursor:pointer}
.bar-sub{font-size:12px;color:var(--hint)}
.icon-btn{font-size:26px;line-height:1;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center}
.icon-btn:active{background:var(--bg2)}
.danger-badge{margin-left:auto;font-size:11px;font-weight:600;color:#fff;background:var(--danger);padding:3px 8px;border-radius:999px;text-transform:uppercase;letter-spacing:.3px}
.danger-strip{font-size:11px;text-align:center;color:#fff;background:var(--danger);padding:2px 8px}
.chip{font-size:12px;padding:4px 10px;border-radius:999px;background:var(--bg2);border:1px solid var(--line);white-space:nowrap}
.chip.model.opus{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}

.sess-list{flex:1;overflow-y:auto;padding:6px 0 calc(96px + var(--safe-b))}
.sess{display:flex;gap:10px;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line)}
.sess:active{background:var(--bg2)}
.sess .av{width:40px;height:40px;border-radius:12px;background:var(--bubble);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.sess .mid{flex:1;min-width:0}
.sess .name{font-weight:600}
.sess .pv{font-size:13px;color:var(--hint)}
.sess .side{display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-size:12px;color:var(--hint);flex:none}
.dot{width:9px;height:9px;border-radius:50%;background:var(--accent);animation:pulse 1.2s ease-in-out infinite}
@keyframes pulse{50%{opacity:.3}}
.empty{color:var(--hint);text-align:center;padding:40px 20px}
.fab{position:fixed;left:16px;right:16px;bottom:calc(12px + max(var(--safe-b), 12px));background:var(--accent);color:var(--accent-fg);font-weight:600;padding:14px;border-radius:14px;box-shadow:0 4px 16px rgba(0,0,0,.15)}

.chips{display:flex;gap:6px;overflow-x:auto;padding:8px 10px;border-bottom:1px solid var(--line);scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chips .chip{display:flex;align-items:center;gap:6px;max-width:170px}
.chips .chip span{overflow:hidden;text-overflow:ellipsis}
.chips .chip.on{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.chips .chip.add{color:var(--accent);font-weight:600}

.msgs{flex:1;overflow-y:auto;overflow-x:hidden;padding:12px 12px 4px;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
.msg{margin:0 0 14px;max-width:100%;min-width:0}
.msg.user{display:flex;flex-direction:column;align-items:flex-end}
.msg.user .bub{background:var(--bubble);padding:9px 13px;border-radius:16px 16px 4px 16px;max-width:88%;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;min-width:0}
.msg.assistant .txt{overflow-wrap:anywhere;word-break:break-word;min-width:0;max-width:100%}
.txt p{margin:.4em 0}.txt h1,.txt h2,.txt h3,.txt h4{margin:.7em 0 .3em;font-size:1.05em}
.txt ul,.txt ol{margin:.3em 0;padding-left:1.3em}
.txt code{overflow-wrap:anywhere;word-break:break-all;background:var(--code);padding:1px 4px;border-radius:4px;font-family:ui-monospace,Menlo,monospace;font-size:.88em}
.txt pre{background:var(--code);padding:10px;border-radius:10px;overflow-x:auto;font-size:13px;line-height:1.35;max-width:100%;white-space:pre;-webkit-overflow-scrolling:touch}
.txt pre code{background:none;padding:0;word-break:normal;overflow-wrap:normal;white-space:pre}
.txt a{overflow-wrap:anywhere;word-break:break-all}
.tblwrap{max-width:100%;overflow-x:auto;margin:.5em 0;-webkit-overflow-scrolling:touch}
.tblwrap table{border-collapse:collapse;font-size:13.5px;min-width:100%}
.tblwrap th,.tblwrap td{border:1px solid var(--line);padding:5px 8px;text-align:left;vertical-align:top;white-space:nowrap}
.tblwrap td{white-space:normal;min-width:80px;max-width:260px;overflow-wrap:anywhere}
.tblwrap th{background:var(--code)}
.txt a{color:var(--link)}
.txt blockquote{margin:.4em 0;padding-left:10px;border-left:3px solid var(--line);color:var(--hint)}
.tool{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--hint);background:var(--bg2);border-radius:9px;padding:5px 9px;margin:5px 0;max-width:100%}
.tool b{color:var(--fg);font-weight:600;flex:none}
.tool .s{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-family:ui-monospace,Menlo,monospace;font-size:11.5px}
.tool .st{flex:none;width:12px;height:12px;border-radius:50%}
.tool .st.run{border:2px solid var(--line);border-top-color:var(--accent);animation:spin .8s linear infinite}
.tool .st.ok{background:#3aa55d}.tool .st.err{background:var(--danger)}
.tool.open .s{white-space:normal;word-break:break-all}
.att{display:flex;flex-direction:column;align-items:flex-end;gap:6px;margin-bottom:4px;width:100%;max-width:320px}
.att img{max-width:160px;max-height:160px;border-radius:10px;display:block}
.att .f{font-size:12.5px;background:var(--bg2);border-radius:9px;padding:6px 9px}
.meta{font-size:11px;color:var(--hint);margin-top:4px}
.meta.err{color:var(--danger);white-space:pre-wrap}
.typing{display:inline-flex;gap:4px;padding:6px 0}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--hint);animation:pulse 1s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}

.pending{display:flex;gap:6px;flex-wrap:wrap;padding:0 10px;max-height:30vh;overflow-y:auto}
.pending .chip{max-width:100%;overflow:hidden;text-overflow:ellipsis}
.pending .chip{display:flex;gap:6px;align-items:center}
.composer{display:flex;align-items:flex-end;gap:8px;padding:8px 10px calc(10px + max(var(--safe-b), 12px));border-top:1px solid var(--line);background:var(--bg)}
/* 16px — iOS не зумит поле; 44px минимум; до 6 строк (6*22 + 2*11 + 2 = 156) */
.composer textarea{flex:1 1 auto;min-width:0;display:block;resize:none;font-size:16px;line-height:22px;min-height:44px;height:44px;max-height:156px;padding:10px 14px;border-radius:22px;overflow-y:auto;box-sizing:border-box}
.composer textarea::placeholder{color:var(--hint);opacity:1}
.composer textarea:placeholder-shown{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.attach{font-size:26px;color:var(--hint);width:44px;height:44px;flex:none}
.send{width:44px;height:44px;flex:none;border-radius:50%;background:var(--accent);color:var(--accent-fg);font-size:20px;font-weight:700}
.send.stop{background:var(--fg);color:var(--bg);font-size:14px}
.send:disabled{opacity:.4}

.sheet-bg{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:10}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:11;background:var(--bg);border-radius:18px 18px 0 0;padding:16px 16px calc(16px + var(--safe-b));display:flex;flex-direction:column;gap:10px;max-height:85vh;overflow-y:auto}
.sheet h3{margin:0 0 4px}
.sheet label{display:flex;flex-direction:column;gap:5px;font-size:13px;color:var(--hint)}
.hint{font-size:12px;color:var(--hint)}
.seg{display:flex;background:var(--bg2);border-radius:10px;padding:3px}
.seg button{flex:1;padding:8px;border-radius:8px}
.seg button.on{background:var(--accent);color:var(--accent-fg)}
.row{display:flex;gap:8px}.row .btn{flex:1}
.btn{background:var(--accent);color:var(--accent-fg);padding:12px;border-radius:12px;font-weight:600}
.btn.ghost{background:var(--bg2);color:var(--fg)}
.btn.danger{background:none;color:var(--danger);border:1px solid var(--danger)}
.btn.wide{width:100%}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(90px + var(--safe-b));background:var(--fg);color:var(--bg);padding:9px 14px;border-radius:10px;font-size:14px;z-index:20;max-width:90%}

/* файлы */
.tabs{display:flex;gap:4px;padding:4px 10px;border-bottom:1px solid var(--line)}
.tabs button{flex:1;padding:4px;border-radius:8px;font-size:13.5px;color:var(--hint)}
.tabs button.on{background:var(--bg2);color:var(--fg);font-weight:600}
.fcard{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:8px;margin:6px 0;width:100%;max-width:320px;min-width:0;text-align:left;box-sizing:border-box}
.msg.user .fcard{margin:0}
.fcard.missing{opacity:.6}
.fprev img{display:block;max-width:100%;max-height:260px;border-radius:8px;margin-bottom:6px;background:#fff;cursor:zoom-in}
.frow{display:flex;gap:9px;align-items:center;min-width:0}
.fic{flex:none;width:38px;height:38px;border-radius:9px;background:var(--accent);color:var(--accent-fg);font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}
.fmeta{min-width:0;flex:1}
.fname{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fsize{font-size:11.5px;color:var(--hint);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fbtns{display:flex;gap:6px;margin-top:7px}
.fbtns button{flex:1;padding:7px;border-radius:9px;background:var(--bg);border:1px solid var(--line);font-size:13px;font-weight:600}
.fbtns button[data-a=dl]{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
.fgroup{font-size:12px;color:var(--hint);text-transform:uppercase;letter-spacing:.3px;margin:12px 2px 2px}
.files .fcard{max-width:none}
.mdimg{display:block;max-width:100%;max-height:320px;border-radius:10px;margin:6px 0;background:#fff;cursor:zoom-in}
.viewer{position:fixed;inset:0;z-index:30;background:rgba(0,0,0,.92);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:16px}
.viewer img{max-width:100%;max-height:80vh;object-fit:contain;background:#fff;border-radius:6px}
.viewer .vt{color:#fff;font-size:14px;word-break:break-all;text-align:center}
.viewer .hint{color:#aaa}

.composer textarea:focus{outline:none;border-color:var(--accent)}
.danger-strip{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chips .chip .dot{flex:none}