/* Дизайн универсального помощника: спокойный чат и выразительный знак. */
:root{--blue:#2466df;--ink:#172b46;--muted:#65758a;--line:#e6ebf2;--bg:#edf1f7;--panel:#fff;--soft:#f5f7fb;--success:#258570;--danger:#a42e42}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:default}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--blue);outline-offset:3px}[hidden]{display:none!important}.symbols{position:absolute;width:0;height:0;overflow:hidden}svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.shell{display:grid;grid-template-columns:264px minmax(0,1fr);max-width:1380px;height:calc(100dvh - 40px);margin:20px auto;background:var(--panel);border:1px solid var(--line);border-radius:20px;box-shadow:0 16px 64px #173e6d09;overflow:hidden}.sidebar{display:flex;flex-direction:column;background:#f7f9fc;border-right:1px solid var(--line);padding:28px 18px 20px;min-height:0}.brand{display:flex;gap:12px;align-items:center;margin:0 2px 28px}.brand strong{font-size:17px;letter-spacing:-.4px}.brand small,.sidebar-footer small{display:block;color:var(--muted);font-size:11px}.brand-logo{flex-shrink:0;display:grid;place-items:center}.brand-logo img{display:block}.new-chat{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:48px;padding:10px;border:0;border-radius:12px;background:var(--blue);color:white;font-weight:600;font-size:14px}.new-chat:hover,.send:hover{background:#1956c6}.search{display:flex;align-items:center;gap:8px;margin:24px 0;color:var(--muted);border:1px solid var(--line);padding:10px;border-radius:10px;background:white}.search svg{width:18px}.search input{min-width:0;width:100%;border:0;background:transparent;font-size:13px;color:var(--ink)}.section-label{font-size:11px;letter-spacing:.4px;font-weight:650;color:var(--muted);padding:0 8px}#chats{overflow:auto;flex:1;margin-top:10px}.chat-item{width:100%;display:flex;align-items:center;gap:10px;background:none;border:0;padding:12px;border-radius:10px;text-align:left;color:#506078;min-height:48px;margin:4px 0;font-size:13px}.chat-item svg{width:18px}.chat-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-item.active{background:#e9f0fc;color:#2456ab}.empty-history{padding:12px;color:var(--muted);font-size:13px}.sidebar-footer{display:flex;gap:10px;border-top:1px solid var(--line);padding-top:18px;font-size:12px;align-items:center}.sidebar-footer svg{color:#658d88}
.main{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto minmax(0,1fr) auto;min-width:0;min-height:0;background:white}.main>.topbar{grid-row:1}.main>.notice{grid-row:2}.main>.conversation{grid-row:3}.main>.composer{grid-row:4}.topbar{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding:14px 32px;min-height:80px}.header-mark{display:none;flex-shrink:0}.heading{flex:1;min-width:0}.heading strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:16px;letter-spacing:-.2px}.connection{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:6px;margin-top:2px}.connection:before{content:"";width:5px;height:5px;border-radius:50%;background:#9cabc0}.connection.connected:before{background:#2fa683}.icon{border:1px solid transparent;background:transparent;border-radius:10px;display:grid;place-items:center;width:48px;height:48px;min-width:48px;color:var(--muted)}.icon:hover{background:#eef3fb;color:var(--blue)}.conversation{overflow:auto;padding:32px;scroll-behavior:smooth;overscroll-behavior:contain;min-height:0}.welcome{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;min-height:100%;padding:28px 0 48px}.welcome-mark{width:88px;height:88px;margin-bottom:28px;filter:drop-shadow(0 12px 18px #2456ab20)}.welcome-mark img{display:block;width:100%;height:100%}.eyebrow{font-size:10px;letter-spacing:1.5px;color:#637a97;font-weight:650}.welcome h1{font-size:32px;letter-spacing:-1px;line-height:1.2;margin:14px 0 16px;font-weight:700}.welcome p{color:var(--muted);font-size:15px;margin:0;line-height:1.85}.welcome-hint{display:flex;align-items:center;gap:8px;color:#7b8799;font-size:12px;margin-top:32px}.welcome-hint svg{width:16px;height:16px}
.messages,.questions{max-width:760px;margin:auto}.message{display:flex;gap:12px;margin-bottom:32px;align-items:flex-start}.message.user{justify-content:flex-end}.message .bubble{min-width:0;max-width:calc(100% - 44px);overflow-wrap:anywhere}.message.assistant .bubble{flex:1;padding:2px 0 0}.message.user .bubble{padding:12px 18px;background:#edf3fd;color:#233e65;border-radius:16px 16px 4px 16px;max-width:88%}.message .avatar{width:32px;height:32px;flex-shrink:0}.message .avatar img{display:block;width:32px;height:32px}.message-content{font-size:15px;line-height:1.75;white-space:normal}.message-content p{margin:0 0 14px}.message-content p:last-child{margin-bottom:0}.message-content h2,.message-content h3,.message-content h4{line-height:1.45;letter-spacing:-.25px;margin:24px 0 10px;font-weight:700}.message-content h2{font-size:20px}.message-content h3{font-size:17px}.message-content h4{font-size:15px}.message-content>:first-child{margin-top:0}.message-content strong{font-weight:700;color:#183150}.message-content ul,.message-content ol{margin:8px 0 18px;padding-left:23px}.message-content li{padding-left:3px;margin:7px 0}.message-content li::marker{color:#6581aa}.message-content a{color:#1e5fc9;text-decoration:underline;text-underline-offset:3px}.message-content blockquote{margin:18px 0;padding:10px 14px;border-left:3px solid #9bb9e6;background:#f4f7fc;border-radius:0 8px 8px 0;color:#516680;font-size:14px}.message-content code{font-size:.9em;padding:2px 5px;border-radius:5px;background:#edf1f7}.message-content pre{overflow:auto;background:#f1f4f9;border:1px solid var(--line);border-radius:10px;padding:14px;white-space:pre;margin:14px 0;font-size:13px}.message-content pre code{padding:0;background:none}.message-content hr{border:0;border-top:1px solid var(--line);margin:24px 0}.copy{display:flex;gap:6px;align-items:center;font-size:11px;color:var(--muted);background:none;border:0;padding:10px 0;min-height:48px}.copy svg{width:15px;height:15px}.bubble>small{display:block;color:var(--danger);font-size:12px}
.composer{padding:12px 32px 18px;background:#fff;width:100%;max-width:824px;margin:auto}.input-wrap{border:1px solid #dce4f0;box-shadow:0 4px 20px #173e6d08;border-radius:18px;padding:12px 12px 8px;min-height:106px;background:#fff}.input-wrap:focus-within{border-color:#88acf0;box-shadow:0 0 0 3px #2466df09}.input-wrap textarea{display:block;resize:none;min-width:0;width:100%;max-height:160px;border:0;outline:none;background:transparent;line-height:1.6;padding:1px 5px 10px;color:var(--ink);font-size:15px}.input-wrap textarea::placeholder{color:#8391a4}.input-tools{display:flex;align-items:center;justify-content:space-between;gap:8px}.input-tools-left{display:flex;gap:2px}.send{display:grid;place-items:center;width:48px;min-width:48px;height:48px;border-radius:13px;background:var(--blue);color:white;border:0}.stop{background:#304967}.composer-caption{display:flex;gap:12px;justify-content:space-between;color:#758399;font-size:10px;margin:10px 5px 0;overflow-wrap:anywhere}
.details{display:none}.details.open{display:block;position:fixed;z-index:6;right:20px;top:20px;bottom:20px;width:320px;max-width:90vw;border:1px solid var(--line);border-radius:18px;padding:18px 20px;background:#fff;overflow:auto;box-shadow:0 8px 40px #172b4620}.details-title{display:flex;align-items:center;justify-content:space-between;font-size:16px}.profile-card{margin:22px 0;padding:24px 12px;background:var(--soft);border:1px solid var(--line);border-radius:16px;text-align:center}.profile-card .brand-logo{margin:0 auto 16px}.profile-card h2{font-size:17px;margin:0}.profile-card p{color:var(--muted);font-size:13px;line-height:1.8}.profile-status{display:inline-flex;gap:6px;align-items:center;background:#fff;color:var(--success);border-radius:18px;padding:6px 10px;font-size:11px}.profile-status i{height:5px;width:5px;background:var(--success);border-radius:50%}.detail-block{padding:16px 4px;border-bottom:1px solid var(--line)}.detail-block .section-label{padding:0}.detail-block strong{display:block;margin-top:10px;font-size:13px;overflow-wrap:anywhere}.detail-block p{font-size:13px;line-height:1.8;color:var(--muted);margin-bottom:0}.logout{width:100%;margin-top:24px;padding:12px;background:white;border:1px solid var(--line);border-radius:11px;color:var(--muted);font-size:13px;min-height:48px}.notice{padding:12px 20px;background:#fff2f3;color:var(--danger);font-size:13px}.questions{margin:auto}.question{padding:18px;margin:14px 0;background:#f1f6ff;border:1px solid #d4e1f5;border-radius:14px}.question h3{font-size:16px;margin:0 0 10px}.question p{white-space:pre-wrap;overflow-wrap:anywhere}.question button{margin:5px;padding:12px;border:1px solid #b4cef0;border-radius:10px;background:white;color:var(--ink);min-height:48px}.question button[aria-pressed=true]{background:#e0ecff;border-color:#2466df}.question textarea{width:100%;min-height:80px;padding:12px;border:1px solid var(--line);border-radius:10px}.question pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;max-height:180px;overflow:auto}.mobile-menu,.close-mobile{display:none}.backdrop{position:fixed;inset:0;background:#172b4655;border:0;z-index:4}dialog{border:1px solid var(--line);border-radius:22px;width:min(420px,calc(100% - 32px));padding:28px;color:var(--ink);box-shadow:0 18px 80px #152b4833}dialog::backdrop{background:#16334d66;backdrop-filter:blur(5px)}dialog h2{font-size:23px;margin:22px 0 8px}dialog p{font-size:14px;color:var(--muted)}dialog label{font-size:12px;display:block;margin-top:24px}dialog input{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;margin:8px 0 14px}#login-error{color:var(--danger);min-height:20px}
/* Вложения и запись сохраняют прежнюю рабочую логику. */
.icon.recording{background:#ffe8ed;color:#ad2e47}.staged-files{display:flex;gap:8px;max-height:116px;overflow:auto;margin:0 0 10px}.file-card{min-width:0;max-width:100%;display:flex;align-items:center;gap:4px;padding:5px;background:#f2f6fd;border:1px solid #dce5f3;border-radius:12px;color:#355578}.file-card a{display:flex;align-items:center;gap:8px;min-width:0;text-decoration:none;color:inherit}.file-card a>span:last-child{display:block;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.file-card img{height:44px;width:44px;object-fit:cover;border-radius:7px}.document-mark{display:grid;place-items:center;width:36px;min-width:36px;height:44px;font-size:25px}.file-remove{flex-shrink:0}.message-files{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.voice-panel{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px;padding:8px 12px;background:#fff0f3;border-radius:12px;font-size:12px}.voice-panel button{min-height:48px;background:white;color:#a42e42;border:1px solid #f2bcc9;border-radius:9px;padding:8px}.media-status{font-size:12px;color:#285c97;padding:6px 0 10px}
@media(max-width:1420px) and (min-width:701px){.shell{margin:16px;height:calc(100dvh - 32px)}}
@media(max-width:700px){.shell{display:block;margin:0;border:0;border-radius:0;height:var(--app-height,100dvh)}.main{height:100%}.sidebar{display:none;position:fixed;z-index:6;left:0;top:0;bottom:0;width:min(320px,90vw);padding-top:calc(24px + env(safe-area-inset-top));padding-bottom:calc(20px + env(safe-area-inset-bottom));box-shadow:12px 0 40px #152b481a}.sidebar.open{display:flex}.sidebar .brand{gap:8px;margin-left:0;margin-right:0}.brand strong{font-size:15px}.brand-logo img{width:40px;height:40px}.close-mobile{display:grid;margin-left:auto}.mobile-menu{display:grid}.header-mark{display:block;width:30px;height:30px}.topbar{padding:calc(8px + env(safe-area-inset-top)) 10px 8px;min-height:72px;gap:8px}.heading strong{font-size:14px}.connection{font-size:10px}.conversation{padding:24px 16px}.welcome{padding:20px 0 44px}.welcome h1{font-size:28px;margin:14px 0 14px}.welcome p{font-size:14px}.welcome-mark{width:80px;height:80px;margin-bottom:26px}.eyebrow{font-size:9px;letter-spacing:1.2px}.welcome-hint{font-size:11px;gap:6px;margin-top:28px}.composer{padding:8px 12px calc(12px + env(safe-area-inset-bottom));max-height:70dvh;overflow:auto}.input-wrap{padding:12px 10px 8px;min-height:104px;border-radius:17px}.input-wrap textarea{font-size:16px}.composer-caption{font-size:10px;margin-top:9px}.desktop-hint{display:none}.message{gap:10px;margin-bottom:28px}.message-content{font-size:15px;line-height:1.75}.message-content h2{font-size:18px}.message-content h3{font-size:16px}.message.user .bubble{padding:11px 15px}.details.open{right:0;top:0;bottom:0;border-radius:0;padding-top:calc(18px + env(safe-area-inset-top));padding-bottom:calc(18px + env(safe-area-inset-bottom))}.profile-card .brand-logo img,dialog .brand-logo img{width:56px;height:56px}.file-card a>span:last-child{max-width:145px}.message-files .file-card{width:100%}.message-files .file-card a>span:last-child{max-width:150px}.notice{max-height:100px;overflow:auto}}
@media(max-height:500px){.welcome{padding:12px 0;min-height:230px}.welcome-mark{width:48px;height:48px;margin-bottom:12px}.welcome h1{font-size:24px;margin:8px}.welcome p{font-size:12px}.welcome-hint{display:none}.conversation{padding-top:12px;padding-bottom:12px}}
/* Утверждённые изображения: портрет в малых значках, робот целиком на старте. */
.brand-logo img,.header-mark,.avatar img{object-fit:contain;background:#000;border-radius:22%}
.welcome-mark{width:132px;height:132px}
.welcome-mark img{object-fit:contain;background:#000;border-radius:24px}
@media(max-width:700px){.welcome-mark{width:116px;height:116px}}
@media(max-height:500px){.welcome-mark{width:48px;height:48px}.welcome-mark img{border-radius:12px}}
@media(prefers-reduced-motion:reduce){.conversation{scroll-behavior:auto}}
/* Полировка без смены утверждённой композиции и изображений. */
.header-meta{display:flex;align-items:center;gap:10px;min-width:0}.header-meta .connection{flex-shrink:0;margin-top:0}.heading strong{line-height:1.4}.topbar{gap:12px;padding-top:10px;padding-bottom:10px}.header-meta .model-picker{max-width:min(300px,100%);min-height:44px;border:0;padding:5px 8px 5px 0;text-align:left;background:transparent;font-size:13px;color:var(--muted)}.model-picker::after{content:'⌄';position:absolute;right:5px;top:50%;transform:translateY(-50%)}.header-meta .model-picker{position:relative;padding-right:20px}.model-picker:focus-visible{outline:2px solid var(--blue)}
#theme-choice{display:block;margin-top:12px;min-height:48px;width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink)}
.conversation{scrollbar-gutter:stable}.staged-files{flex-wrap:wrap}.voice-panel{flex-wrap:wrap}.voice-panel span{min-width:0;flex:1;overflow-wrap:anywhere}.details{overscroll-behavior:contain}.attach-menu button{min-height:48px}dialog{color:var(--ink);background:var(--panel)}
:root[data-theme=dark]{color-scheme:dark;--blue:#78a8ff;--ink:#e6edf7;--muted:#a3b2c7;--line:#354152;--bg:#0e131b;--panel:#151b24;--soft:#202a37;--success:#73ccb0;--danger:#ffa0b0}
[data-theme=dark] .main,[data-theme=dark] .composer,[data-theme=dark] .input-wrap,[data-theme=dark] .details.open,[data-theme=dark] .search,[data-theme=dark] .logout,[data-theme=dark] .profile-status,[data-theme=dark] .attach-menu,[data-theme=dark] .attach-menu button{background:var(--panel);color:var(--ink)}
[data-theme=dark] .sidebar{background:#111822}[data-theme=dark] .chat-item{color:var(--muted)}[data-theme=dark] .chat-item.active,[data-theme=dark] .icon:hover{background:#263850;color:var(--ink)}
[data-theme=dark] .new-chat,[data-theme=dark] .send{background:#477bd0;color:#fff}[data-theme=dark] .stop{background:#66788f}[data-theme=dark] .input-wrap{border-color:var(--line)}
[data-theme=dark] .message.user .bubble{background:#263850;color:#e6edf7}[data-theme=dark] .message-content strong{color:var(--ink)}[data-theme=dark] .message-content a{color:#9bc0ff}[data-theme=dark] .message-content pre,[data-theme=dark] .message-content code,[data-theme=dark] .message-content blockquote,[data-theme=dark] .file-card,[data-theme=dark] .question{background:var(--soft);color:var(--ink);border-color:var(--line)}
[data-theme=dark] .question button,[data-theme=dark] .question textarea{background:var(--panel);color:var(--ink)}[data-theme=dark] .question button[aria-pressed=true]{background:#263850}[data-theme=dark] .notice,[data-theme=dark] .voice-panel{background:#35202b;color:var(--danger)}[data-theme=dark] .voice-panel button{background:var(--panel);color:var(--danger);border-color:#774756}
[data-theme=dark] .media-status{color:#9bc0ff}[data-theme=dark] .welcome p,[data-theme=dark] .welcome-hint,[data-theme=dark] .eyebrow,[data-theme=dark] .composer-caption{color:var(--muted)}
@media(max-width:700px){.header-meta{gap:8px}.header-meta .model-picker{max-width:calc(100% - 13px);font-size:12px}.header-meta .connection{font-size:0;gap:0;width:6px}.header-meta .connection:before{width:6px;height:6px}.heading strong{font-size:14px}.topbar{min-height:88px;padding-top:calc(6px + env(safe-area-inset-top));padding-bottom:6px}.conversation{padding-top:20px}.welcome h1{font-size:27px}.welcome-mark{margin-bottom:20px}}
@media(max-height:500px){.topbar{min-height:64px;padding-top:4px;padding-bottom:4px}.heading strong{font-size:12px}.header-meta .model-picker{min-height:44px;font-size:11px}.composer{padding-top:4px;padding-bottom:calc(4px + env(safe-area-inset-bottom))}.input-wrap{min-height:86px;padding-top:6px}.composer-caption{margin-top:4px}.welcome{min-height:160px}.welcome h1{font-size:21px}.welcome p{font-size:12px}.welcome-mark{margin-bottom:8px}}
/* Компактный мобильный ввод: больше места для переписки. */
@media(max-width:700px){
 .topbar{min-height:0;padding-top:4px;padding-bottom:4px;gap:6px}
 .heading strong{font-size:12px;line-height:1.4}
 .composer{padding:4px 10px calc(4px + env(safe-area-inset-bottom))}
 .input-wrap{display:grid;grid-template-columns:90px minmax(0,1fr) 44px;align-items:center;gap:4px;min-height:54px;padding:4px 6px;border-radius:16px}
 .input-tools{display:contents}
 .input-tools-left{grid-column:1;grid-row:1;gap:2px}
 .input-wrap textarea{grid-column:2;grid-row:1;font-size:16px;line-height:1.4;padding:6px 0;min-height:34px;max-height:120px}
 .input-tools .icon{width:44px;min-width:44px;height:44px}
 .input-tools .send{grid-column:3;grid-row:1;width:44px;min-width:44px;height:44px;border-radius:12px}
 .composer-caption{margin:2px 4px 0;font-size:10px;line-height:1.4}
 .conversation{padding-top:12px;padding-bottom:12px}
}