:root{
  /* Telegram-подобная тёмная тема */
  --bg:#0E1621; --panel:#17212B; --header:#212D3B; --line:#243140;
  --ai:#212D3B; --me:#2B5278; --txt:#eaf7fb; --muted:#7A8A99; --me-time:#7DAEE0;
  --accent:#22C5E8; --accent2:#69DDEF; --accent-ink:#04121a; --field:#17212B;
}
[data-theme="light"]{
  --bg:#e7ebf0; --panel:#ffffff; --header:#ffffff; --line:#e2e6ea;
  --ai:#ffffff; --me:#cfe8fb; --txt:#0b1622; --muted:#6b7a85; --me-time:#3a86b8;
  --accent:#0E9BC4; --accent2:#0a7ba0; --accent-ink:#ffffff; --field:#f1f4f7;
}
/* Scrollbar */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--muted)}
[data-theme="light"] ::-webkit-scrollbar-thumb{background:#8e9eb0}
[data-theme="light"] ::-webkit-scrollbar-thumb:hover{background:#6b7a8d}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
[data-theme="light"]*{scrollbar-color:#8e9eb0 transparent}
html,body{margin:0;height:100%;overflow-x:hidden;background:#06070A;color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;-webkit-font-smoothing:antialiased;overscroll-behavior:none}
.screen{height:100dvh;display:flex;flex-direction:column}
.hidden{display:none!important}

/* login */
#login{align-items:center;justify-content:center;background:#06070A}
.login-box{width:100%;max-width:350px;padding:32px 24px;text-align:center}
.logo{font-size:40px;font-weight:800;letter-spacing:-1.5px;color:#ffffff}
.logo b{color:var(--accent)}
.sub{color:var(--muted);margin:4px 0 28px;font-size:14px}
#pwd,#code,#email{width:100%;padding:15px 16px;border-radius:14px;border:1px solid var(--line);
  background:var(--panel);color:var(--txt);font-size:16px;outline:none}
#pwd:focus,#code:focus,#email:focus{border-color:var(--accent)}
#code{text-align:center;letter-spacing:6px;font-size:22px;font-weight:700}
#loginBtn,#verifyBtn,#emailToggle{width:100%;margin-top:14px;padding:15px;border:none;border-radius:14px;
  background:var(--accent);color:var(--accent-ink);font-size:16px;font-weight:700;cursor:pointer;
  transition:transform .12s ease,background .15s ease,box-shadow .15s ease;-webkit-tap-highlight-color:transparent}
#loginBtn:active,#verifyBtn:active,#emailToggle:active{background:var(--accent2);transform:scale(.96)}
.ghost{width:100%;margin-top:10px;padding:12px;border:1px solid var(--line);border-radius:14px;
  background:transparent;color:var(--muted);font-size:15px;cursor:pointer;
  transition:transform .12s ease,background .15s ease,border-color .15s ease;-webkit-tap-highlight-color:transparent}
.ghost:active{transform:scale(.96);background:var(--panel);border-color:var(--accent)}
.hint{color:var(--muted);font-size:14px;margin:0 0 16px}
.err{color:#ff6b6b;font-size:14px;margin-top:14px;min-height:18px}

/* chat — Telegram look */
#chat{background:#06070A;max-width:100%;width:100%;
  border-left:none;border-right:none}
header{display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));
  padding-left:max(14px,env(safe-area-inset-left));
  padding-right:max(14px,env(safe-area-inset-right));
  background:var(--header);border-bottom:1px solid rgba(0,0,0,.2)}
header .hl{display:flex;align-items:center;gap:10px;min-width:0}
header .back{color:var(--muted);font-size:22px;line-height:1;cursor:default}
.ava{position:relative;width:40px;height:40px;border-radius:50%;overflow:hidden;
  border:1px solid rgba(34,197,232,.4);flex-shrink:0}
.ava img{width:100%;height:100%;object-fit:cover}
.ava .on{position:absolute;bottom:0;right:0;width:11px;height:11px;border-radius:50%;
  background:var(--accent);border:2px solid var(--header)}
header .nm{font-weight:600;font-size:15px;color:var(--txt);line-height:1.15}
header .brainsel{font-weight:600;font-size:15px;color:var(--txt);line-height:1.15;
  background:transparent;border:none;outline:none;cursor:pointer;max-width:170px;
  -webkit-appearance:none;appearance:none;padding:0 16px 0 0;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238794a3' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat:no-repeat;background-position:right center}
header .brainsel option{color:#111;background:#fff}
header .st{font-size:12px;color:var(--accent)}
header .hr{display:flex;align-items:center;gap:14px;color:var(--muted)}
#themeBtn,#logoutBtn,#clearChatBtn{background:transparent;border:none;color:var(--muted);cursor:pointer;padding:4px;
  display:flex;align-items:center;justify-content:center;
  transition:color .2s ease,transform .2s ease}
#themeBtn:hover,#logoutBtn:hover,#clearChatBtn:hover{color:var(--txt);transform:scale(1.12)}
#logoutBtn:hover{color:#ff5b5b}
#themeBtn svg{transition:opacity .15s ease}

#messages{flex:1;overflow-y:auto;overflow-x:hidden;
  padding:14px max(14px,env(safe-area-inset-right)) 14px max(14px,env(safe-area-inset-left));
  display:flex;flex-direction:column;gap:10px;
  background:var(--bg);
  background-image:radial-gradient(circle at 20% 30%, rgba(34,197,232,.04), transparent 40%),
                   radial-gradient(circle at 80% 70%, rgba(34,197,232,.03), transparent 40%)}
.daypill{align-self:center;font-size:11px;padding:4px 12px;border-radius:999px;
  background:rgba(33,45,59,.7);color:#c5d0d8;margin:6px 0}
[data-theme="light"] .daypill{background:rgba(180,195,210,.45);color:#4a6070}
.row{display:flex;align-items:flex-end;gap:8px;max-width:88%;min-width:0}
.row.me{align-self:flex-end}
.row.ai{align-self:flex-start}
.row .ava-s{width:28px;height:28px;border-radius:50%;overflow:hidden;flex-shrink:0}
.row .ava-s img{width:100%;height:100%;object-fit:cover}
.bubble{border-radius:16px;padding:7px 11px;line-height:1.38;font-size:14.5px;
  white-space:pre-wrap;word-wrap:break-word;word-break:break-word;overflow-wrap:break-word;
  overflow:hidden;min-width:0;position:relative}
.ai .bubble{background:var(--ai);border-bottom-left-radius:5px;color:var(--txt)}
.me .bubble{background:var(--me);border-bottom-right-radius:5px;color:#fff}
[data-theme="light"] .me .bubble{color:#0b1622}
.bubble .time{font-size:10px;margin-top:3px;text-align:right;color:var(--muted)}
.me .bubble .time{color:var(--me-time)}
.bubble img.thumb{width:75%;max-width:75%;height:auto;border-radius:10px;margin-top:6px;display:block}
.bubble.media-only{padding:3px;background:transparent !important;overflow:hidden}
.bubble.media-only img.thumb{border-radius:14px;margin-top:0;width:75%;max-width:75%;height:auto}
.me .bubble.media-only img.thumb{border-bottom-right-radius:5px}
.ai .bubble.media-only img.thumb{border-bottom-left-radius:5px}
.bubble.media-only .time{position:absolute;bottom:6px;right:10px;background:rgba(0,0,0,.45);padding:1px 5px;border-radius:8px;color:#fff !important}
.bubble .att{display:block;font-size:12.5px;color:var(--muted);margin-top:5px}
.thumb-err{display:flex;align-items:center;justify-content:center;width:120px;height:80px;border-radius:10px;background:var(--panel);color:var(--muted);font-size:12px;margin-top:6px}
.bubble b,.bubble .acc{color:var(--accent);font-weight:600}
.bubble a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;word-break:break-all}
.bubble a:hover{opacity:.8}
.me .bubble a{color:#fff;opacity:.9}
.bubble p{margin:0 0 4px}
.bubble p:last-child{margin-bottom:0}

/* code blocks — не разрывают пузырёк */
.bubble pre{overflow-x:auto;overflow-y:hidden;max-width:100%;margin:6px 0;
  background:rgba(0,0,0,.3);border-radius:8px;padding:8px 10px;
  font-size:12.5px;line-height:1.45;-webkit-overflow-scrolling:touch}
.bubble pre::-webkit-scrollbar{height:3px}
.bubble pre::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.bubble code{font-family:"SF Mono",Monaco,Menlo,Consolas,monospace;font-size:13px}
.bubble pre code{white-space:pre;word-break:normal;overflow-wrap:normal;
  background:none;padding:0;border-radius:0;font-size:12.5px}
.bubble :not(pre)>code{background:rgba(0,0,0,.25);border-radius:4px;
  padding:1px 5px;font-size:12.5px;word-break:break-all}
.typing-row{display:flex;flex-direction:column;align-items:flex-start;gap:3px;max-width:88%;align-self:flex-start}
.typing-bubble{background:var(--ai);border-radius:16px;border-bottom-left-radius:5px;
  padding:10px 14px;display:flex;align-items:center;gap:5px}
.thinking-line{font-size:11px;color:var(--muted);
  font-family:"SF Mono",Monaco,Menlo,monospace;
  padding:1px 4px;opacity:0;transition:opacity .25s ease;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:280px;letter-spacing:.01em}
.thinking-line.visible{opacity:1}
.debug-line{font-size:10px;color:var(--muted);opacity:0;
  font-family:"SF Mono",Monaco,Menlo,monospace;
  padding:0 4px 3px;transition:opacity .3s ease;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  max-width:310px;letter-spacing:.03em;line-height:1.4}
.debug-line.visible{opacity:.5}
.typing-dot{width:7px;height:7px;border-radius:50%;background:var(--muted);
  animation:tdot 1.2s ease-in-out infinite}
.typing-dot:nth-child(2){animation-delay:.2s}
.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes tdot{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-5px);opacity:1}}
.st-dot{display:inline-block;width:3px;height:3px;border-radius:50%;background:var(--accent);
  animation:stdot 1.2s ease-in-out infinite;margin:0 1.5px;vertical-align:middle}
.st-dot:nth-child(2){animation-delay:.2s}
.st-dot:nth-child(3){animation-delay:.4s}
@keyframes stdot{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-3px);opacity:1}}

/* attachments tray */
#tray{display:flex;flex-wrap:wrap;gap:8px;
  padding:0 max(12px,env(safe-area-inset-right)) 0 max(12px,env(safe-area-inset-left));
  background:var(--header)}
#tray:not(:empty){padding:8px max(12px,env(safe-area-inset-right)) 8px max(12px,env(safe-area-inset-left))}
.chip{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:6px 10px;font-size:13px;max-width:220px;color:var(--txt)}
.chip .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip .x{cursor:pointer;color:var(--muted);font-weight:700}
.chip.up{opacity:.6}

#composer{display:flex;gap:8px;
  padding:9px max(12px,env(safe-area-inset-right)) max(9px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));
  background:var(--header);align-items:flex-end}
#input{flex:1;resize:none;max-height:130px;padding:11px 14px;border-radius:20px;
  border:none;background:var(--panel);color:var(--txt);
  font-size:16px;outline:none;font-family:inherit}
.iconbtn{flex:0 0 44px;height:44px;border:none;border-radius:50%;
  font-size:18px;cursor:pointer;background:transparent;color:var(--muted)}
#sendBtn{background:var(--accent);color:var(--accent-ink)}
#micBtn.rec{color:#ff5b5b}
#recInd{display:none;align-items:center;gap:8px;flex:1;color:#ff5b5b;font-size:14px;padding-left:6px}
#recInd .rd{width:9px;height:9px;border-radius:50%;background:#ff5b5b;animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}

#sendBtn.stopping{background:#ff5b5b;color:#fff}

.bubble .time{display:flex;align-items:center;gap:6px;justify-content:flex-end}
.chbadge{font-size:9px;font-weight:700;letter-spacing:.3px;padding:1px 5px;border-radius:6px;
  background:rgba(127,142,160,.22);color:var(--muted);text-transform:uppercase;margin-right:auto;flex-shrink:0}
.me .bubble .chbadge{background:rgba(255,255,255,.22);color:rgba(255,255,255,.85)}

/* контекстное меню долгого тапа */
#ctx-menu{position:fixed;z-index:9999;background:var(--header);border:1px solid var(--line);
  border-radius:14px;box-shadow:0 8px 32px rgba(0,0,0,.45);overflow:hidden;
  min-width:160px;animation:ctxIn .12s ease}
@keyframes ctxIn{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}
.ctx-item{display:flex;align-items:center;gap:10px;padding:13px 16px;font-size:14px;
  color:var(--txt);cursor:pointer;user-select:none;transition:background .1s}
.ctx-item:hover,.ctx-item:active{background:var(--line)}
.ctx-item.danger{color:#ff5b5b}
.ctx-item .ctx-icon{font-size:16px;flex-shrink:0}
#ctx-overlay{position:fixed;inset:0;z-index:9998}
.ava .on.offline{background:#ff5b5b!important}
.reconnect-notice{align-self:center;font-size:12px;color:var(--muted);padding:4px 14px;
  background:rgba(33,45,59,.8);border-radius:999px;margin:2px 0}

.biglink{display:block;width:100%;margin-top:14px;padding:15px;border-radius:14px;background:var(--accent);color:var(--accent-ink);font-size:16px;font-weight:700;text-decoration:none}
#stepChoose #emailToggle{margin-top:12px}

@keyframes spin{to{transform:rotate(360deg)}}

/* scroll-to-bottom */
#scrollDown{position:absolute;bottom:72px;right:14px;width:40px;height:40px;border-radius:50%;
  border:none;background:var(--header);color:var(--txt);cursor:pointer;z-index:10;
  display:none;align-items:center;justify-content:center;
  box-shadow:0 2px 10px rgba(0,0,0,.35);transition:opacity .2s,transform .2s}
#scrollDown.visible{display:flex}
#scrollDown:hover{transform:scale(1.08)}
#scrollDown .badge{position:absolute;top:-4px;right:-4px;background:var(--accent);color:var(--accent-ink);
  font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;padding:0 4px;pointer-events:none}
#scrollDown .badge:empty{display:none}
#chat{position:relative}

/* установка PWA */
#installBtn{background:transparent;border:none;color:var(--muted);cursor:pointer;padding:4px;
  display:flex;align-items:center;justify-content:center;transition:color .2s}
#installBtn:hover{color:var(--accent)}

/* галочки */
.tick{font-size:10px;color:var(--me-time);transition:color .4s ease;display:inline-block}
.tick2{opacity:0;transition:opacity .25s ease,color .4s ease}
.tick-two .tick2{opacity:1}
.tick-read .tick{color:var(--accent)}

/* retry кнопка */
.retry-btn{display:block;margin-top:7px;padding:5px 12px;border:1px solid rgba(255,107,107,.5);
  border-radius:20px;background:transparent;color:#ff6b6b;font-size:12px;cursor:pointer;
  transition:background .15s}
.retry-btn:hover{background:rgba(255,107,107,.1)}

/* lightbox */
#lightbox{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.9);
  display:flex;align-items:center;justify-content:center;cursor:zoom-out;animation:ctxIn .15s ease}
#lightbox img{max-width:95vw;max-height:90dvh;border-radius:10px;cursor:default;object-fit:contain}
.lb-close{position:absolute;top:16px;right:16px;background:rgba(255,255,255,.15);
  border:none;color:#fff;font-size:20px;width:38px;height:38px;border-radius:50%;cursor:pointer}
.lb-close:hover{background:rgba(255,255,255,.25)}

/* reply quote */
#reply-quote{display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:7px 12px;background:var(--panel);border-left:3px solid var(--accent);
  font-size:13px;color:var(--muted)}
.rq-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rq-close{background:transparent;border:none;color:var(--muted);cursor:pointer;font-size:16px;
  padding:0 4px;flex-shrink:0}
.rq-close:hover{color:var(--txt)}

/* thumbnail cursor */
.bubble img.thumb{cursor:zoom-in}
.bubble.media-only img.thumb{cursor:zoom-in}

/* кнопка Меню в хедере */
#menuBtn{background:transparent;border:none;color:var(--muted);cursor:pointer;padding:4px;
  display:flex;align-items:center;justify-content:center;transition:color .2s ease,transform .2s ease}
#menuBtn:hover,#menuBtn.active{color:var(--accent);transform:scale(1.12)}

/* панель команд (снизу, как TG-меню) */
#bot-menu-overlay{display:none;position:fixed;inset:0;z-index:9000}
#bot-menu-overlay.open{display:block}
#bot-menu{
  position:fixed;left:0;right:0;bottom:0;z-index:9001;
  background:var(--header);border-top:1px solid var(--line);
  border-radius:18px 18px 0 0;
  padding:0 0 max(12px,env(safe-area-inset-bottom)) 0;
  transform:translateY(100%);transition:transform .25s cubic-bezier(.32,.72,0,1);
  box-shadow:0 -4px 24px rgba(0,0,0,.4)}
#bot-menu.open{transform:translateY(0)}
.bm-title{font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;
  letter-spacing:.06em;padding:14px 18px 8px}
.bm-item{display:flex;align-items:center;gap:12px;padding:13px 18px;cursor:pointer;
  user-select:none;transition:background .1s;border-radius:0}
.bm-item:hover,.bm-item:active{background:var(--line)}
.bm-cmd{font-family:"SF Mono",Monaco,Menlo,Consolas,monospace;font-size:14px;
  color:var(--accent);font-weight:600;min-width:70px;flex-shrink:0}
.bm-desc{font-size:13.5px;color:var(--txt)}