:root{
  --navy-950:#031428;--navy-900:#041E3D;--navy-800:#06264D;--navy-700:#0A3D7A;
  --blue-600:#1662C4;--blue-500:#2B7DE9;--sky-400:#5AA9FF;--sky-300:#7DBBFF;--sky-200:#A9D1FF;--sky-100:#D6E9FF;
  --bg:#F3F7FC;--surface:#FFFFFF;--surface-2:#F7FAFE;--text:#0E1C2F;--muted:#5B6B80;--faint:#8A99AD;
  --border:#DCE6F2;--border-strong:#C3D3E8;--code-bg:#0B1F3A;--code-text:#DCEBFF;
  --warn-bg:#FFF4D6;--warn-text:#7A4B00;--danger:#C2362F;--ok:#1C8A5A;
  --radius:14px;--shadow:0 1px 2px rgba(6,38,77,.06),0 8px 28px rgba(6,38,77,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#06111F;--surface:#0B1A2E;--surface-2:#0E2038;--text:#E6EEF8;--muted:#9FB0C6;--faint:#6F829B;
  --border:#1A2F4B;--border-strong:#26416A;--code-bg:#050E1B;--warn-bg:#3A2C08;--warn-text:#FFD27A;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 28px rgba(0,0,0,.35);
}}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--font);font-size:15px;line-height:1.6;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.muted{color:var(--muted)}
.error{color:var(--danger);min-height:1.4em;margin:.25rem 0;font-size:14px}

/* вход */
.login{position:fixed;inset:0;display:grid;place-items:center;padding:20px;background:radial-gradient(1200px 600px at 20% -10%,#1662C4 0%,transparent 60%),radial-gradient(900px 500px at 110% 110%,#0A3D7A 0%,transparent 55%),var(--navy-950);overflow:hidden}
.login-glow{position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(90,169,255,.35),transparent 65%);top:-160px;right:-120px;animation:float 12s ease-in-out infinite}
@keyframes float{50%{transform:translate(-40px,40px)}}
.login-card{position:relative;width:min(420px,100%);background:rgba(255,255,255,.06);border:1px solid rgba(169,209,255,.22);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-radius:22px;padding:32px 28px;color:#E9F3FF;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.login-card h1{font-size:22px;line-height:1.3;margin:18px 0 6px;font-weight:600}
.login-card .muted{color:#A9C4E6;margin:0 0 22px;font-size:14px}
.field{display:block}
.field span{display:block;font-size:13px;color:#A9C4E6;margin-bottom:6px}
.field input{width:100%;height:46px;border-radius:12px;border:1px solid rgba(169,209,255,.3);background:rgba(3,20,40,.55);color:#fff;padding:0 14px;font:inherit;outline:none;transition:border-color .2s,box-shadow .2s}
.field input:focus{border-color:var(--sky-400);box-shadow:0 0 0 4px rgba(90,169,255,.18)}
.login-card .error{color:#FFB4AE}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 18px;border-radius:12px;background:linear-gradient(180deg,var(--blue-500),var(--blue-600));color:#fff;font-weight:600;box-shadow:0 6px 18px rgba(22,98,196,.35);transition:transform .15s,box-shadow .2s,filter .2s}
.btn-primary:hover{filter:brightness(1.07);box-shadow:0 8px 24px rgba(22,98,196,.45)}
.btn-primary:active{transform:translateY(1px)}
.login-card .btn-primary{width:100%;margin-top:6px}
.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(145deg,var(--blue-500),var(--navy-700));color:#CFE6FF;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12),0 6px 16px rgba(0,0,0,.25)}
.brand-mark.big{width:56px;height:56px;border-radius:16px}
.brand-mark.big svg{width:28px;height:28px}

/* каркас */
.app{display:flex;flex-direction:column;height:100dvh}
.top{background:radial-gradient(700px 220px at 85% -40%,rgba(90,169,255,.35),transparent 70%),linear-gradient(135deg,var(--navy-900),var(--navy-700));color:#E9F3FF;padding:14px max(18px,env(safe-area-inset-left)) 12px;box-shadow:0 2px 20px rgba(4,30,61,.25);position:relative;z-index:2}
.top-row{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:980px;margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;min-width:0;flex:1}
.brand>div:last-child{min-width:0}
.brand-title{font-weight:600;font-size:16px;line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-sub{font-size:12.5px;color:var(--sky-200);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-actions{display:flex;align-items:center;gap:6px}
.pill-pilot{font-size:12px;color:#FFE7A8;background:rgba(255,196,64,.14);border:1px solid rgba(255,196,64,.35);padding:4px 10px;border-radius:999px;white-space:nowrap}
.icon-btn{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:var(--sky-100);transition:background .2s}
.icon-btn:hover{background:rgba(255,255,255,.1)}
.icon-btn.ghost{color:var(--muted)}
.icon-btn.ghost:hover{background:var(--surface-2);color:var(--blue-600)}
.ctx{display:flex;gap:10px 18px;flex-wrap:wrap;max-width:980px;margin:12px auto 0}
.seg{display:flex;align-items:center;gap:4px;background:rgba(3,20,40,.35);border:1px solid rgba(169,209,255,.16);border-radius:12px;padding:3px}
.seg-label{font-size:12px;color:var(--sky-200);padding:0 8px 0 6px}
.seg button{font-size:13px;padding:5px 12px;border-radius:9px;color:#CFE2FA;transition:background .2s,color .2s}
.seg button:hover{background:rgba(255,255,255,.08)}
.seg button[aria-checked="true"]{background:linear-gradient(180deg,var(--sky-300),var(--blue-500));color:#04203F;font-weight:600;box-shadow:0 2px 10px rgba(90,169,255,.35)}

.scroll{flex:1;overflow-y:auto;scroll-behavior:smooth}
.welcome,.messages{max-width:820px;margin:0 auto;padding:0 18px}
.welcome{padding-top:clamp(28px,8vh,72px);padding-bottom:12px;animation:rise .5s ease both}
.welcome h2{font-size:clamp(24px,3.4vw,32px);line-height:1.2;margin:0 0 10px;font-weight:650;letter-spacing:-.01em;background:linear-gradient(90deg,var(--navy-700),var(--blue-500));-webkit-background-clip:text;background-clip:text;color:transparent}
@media (prefers-color-scheme:dark){.welcome h2{background:linear-gradient(90deg,#CFE6FF,var(--sky-400));-webkit-background-clip:text;background-clip:text}}
.welcome>p{max-width:620px;margin:0 0 24px}
.quick{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.quick-card{text-align:left;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;gap:2px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s,box-shadow .2s}
.quick-card:hover{transform:translateY(-2px);border-color:var(--sky-300);box-shadow:0 10px 30px rgba(22,98,196,.15)}
.quick-card b{font-weight:600;font-size:14.5px}
.quick-card small{color:var(--muted);font-size:12.5px}
.qi{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;margin-bottom:10px;background:linear-gradient(145deg,var(--sky-100),#EAF3FF);color:var(--blue-600)}
@media (prefers-color-scheme:dark){.qi{background:var(--surface-2);color:var(--sky-400)}}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* сообщения */
.messages{display:flex;flex-direction:column;gap:18px;padding-top:22px;padding-bottom:22px}
.msg{animation:rise .3s ease both;max-width:100%}
.msg.user{align-self:flex-end;max-width:min(78%,620px)}
.msg.user .bubble{background:linear-gradient(180deg,var(--blue-500),var(--blue-600));color:#fff;border-radius:18px 18px 6px 18px;padding:10px 14px;box-shadow:0 6px 18px rgba(22,98,196,.25);white-space:pre-wrap;word-wrap:break-word}
.msg.user .thumbs{display:flex;gap:6px;justify-content:flex-end;margin-bottom:6px}
.msg.user .thumbs img{width:84px;height:64px;object-fit:cover;border-radius:10px;border:1px solid var(--border)}
.msg.bot{display:flex;gap:12px;align-items:flex-start}
.avatar{width:32px;height:32px;border-radius:10px;flex:none;display:grid;place-items:center;background:linear-gradient(145deg,var(--blue-500),var(--navy-700));color:#CFE6FF;margin-top:2px}
.avatar svg{width:17px;height:17px}
.bot-body{min-width:0;flex:1;background:var(--surface);border:1px solid var(--border);border-radius:6px 18px 18px 18px;padding:12px 16px;box-shadow:var(--shadow)}
.md>*:first-child{margin-top:0}.md>*:last-child{margin-bottom:0}
.md p{margin:.5em 0}
.md h3,.md h4{margin:.9em 0 .3em;font-size:15.5px;font-weight:650}
.md ul,.md ol{margin:.4em 0;padding-left:1.4em}
.md li{margin:.2em 0}
.md a{color:var(--blue-600);text-decoration:underline;text-underline-offset:2px}
@media (prefers-color-scheme:dark){.md a{color:var(--sky-400)}}
.md code{font-family:var(--mono);font-size:.88em;background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:.08em .38em}
.md table{border-collapse:collapse;margin:.6em 0;font-size:14px;display:block;overflow-x:auto}
.md th,.md td{border:1px solid var(--border);padding:5px 9px;text-align:left}
.md th{background:var(--surface-2);font-weight:600}
.code{margin:.7em 0;border-radius:12px;overflow:hidden;background:var(--code-bg);border:1px solid #13325C}
.code-head{display:flex;justify-content:space-between;align-items:center;padding:6px 10px 6px 14px;font-size:12px;color:#8FB5E8;background:rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.06)}
.code-head button{font-size:12px;color:#BFD8FA;padding:3px 8px;border-radius:7px;display:inline-flex;gap:5px;align-items:center}
.code-head button:hover{background:rgba(255,255,255,.08)}
.code-head svg{width:14px;height:14px}
.code pre{margin:0;padding:12px 14px;overflow-x:auto;font-family:var(--mono);font-size:13px;line-height:1.55;color:var(--code-text)}
.code pre code{background:none;border:0;padding:0;font-size:inherit}
.t-tag{color:#7DBBFF}.t-attr{color:#F2C46D}.t-str{color:#9FE3B5}.t-num{color:#F59E8B}.t-key{color:#B7A6FF}.t-com{color:#6F8CB3;font-style:italic}.t-sec{color:#5FD3E8;font-weight:600}
.sources{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px;padding-top:10px;border-top:1px dashed var(--border)}
.chip{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--blue-600);background:#EEF5FE;border:1px solid var(--sky-100);padding:3px 9px;border-radius:999px}
@media (prefers-color-scheme:dark){.chip{background:var(--surface-2);border-color:var(--border-strong);color:var(--sky-300)}}
.chip svg{width:13px;height:13px}
.bot-tools{display:flex;gap:4px;margin-top:8px}
.bot-tools button{font-size:12px;color:var(--faint);padding:3px 8px;border-radius:7px;display:inline-flex;gap:5px;align-items:center}
.bot-tools button:hover{color:var(--blue-600);background:var(--surface-2)}
.bot-tools svg{width:14px;height:14px}
.typing{display:inline-flex;gap:5px;padding:6px 0}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--sky-400);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes blink{0%,80%,100%{opacity:.25;transform:scale(.85)}40%{opacity:1;transform:none}}
.msg-error{color:var(--danger);font-size:14px}

/* карточка обращения */
.ticket{border:1px solid var(--sky-200);background:linear-gradient(180deg,#F5FAFF,var(--surface));border-radius:var(--radius);overflow:hidden}
@media (prefers-color-scheme:dark){.ticket{background:var(--surface-2);border-color:var(--border-strong)}}
.ticket-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--border)}
.ticket-head b{display:flex;align-items:center;gap:8px;font-size:14.5px}
.ticket-head b svg{color:var(--blue-500)}
.ticket dl{display:grid;grid-template-columns:150px minmax(0,1fr);gap:6px 14px;margin:0;padding:12px 14px;font-size:14px}
.ticket dt{color:var(--muted)}
.ticket-note{font-size:13px;margin:8px 2px 0}
.ticket dd{margin:0;word-wrap:break-word}
.btn-ghost{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;border-radius:10px;border:1px solid var(--border-strong);color:var(--text);background:var(--surface);font-size:13.5px;transition:border-color .2s,color .2s,background .2s;white-space:nowrap}
.btn-ghost:hover{border-color:var(--sky-300);color:var(--blue-600)}
.btn-ghost svg{width:17px;height:17px}

/* ввод */
.composer-wrap{padding:10px max(18px,env(safe-area-inset-left)) max(10px,env(safe-area-inset-bottom));background:linear-gradient(180deg,transparent,var(--bg) 30%)}
.composer{max-width:820px;margin:0 auto;display:flex;align-items:flex-end;gap:6px;background:var(--surface);border:1px solid var(--border-strong);border-radius:18px;padding:6px;box-shadow:var(--shadow);transition:border-color .2s,box-shadow .2s}
.composer:focus-within{border-color:var(--sky-400);box-shadow:0 0 0 4px rgba(90,169,255,.15),var(--shadow)}
.composer textarea{flex:1;border:0;outline:0;resize:none;background:transparent;font:inherit;color:var(--text);padding:8px 6px;max-height:200px;min-height:36px;line-height:1.45}
.send{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;background:linear-gradient(180deg,var(--blue-500),var(--blue-600));box-shadow:0 6px 16px rgba(22,98,196,.35);transition:transform .15s,filter .2s,opacity .2s}
.send:hover{filter:brightness(1.08)}
.send:disabled{opacity:.45;cursor:default;box-shadow:none}
.hint{max-width:820px;margin:6px auto 0;font-size:12px;color:var(--faint);text-align:center}
.attachments{max-width:820px;margin:0 auto 6px;display:flex;gap:8px;flex-wrap:wrap}
.att{position:relative}
.att img{width:72px;height:56px;object-fit:cover;border-radius:10px;border:1px solid var(--border-strong);display:block}
.att button{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;background:var(--navy-800);color:#fff;display:grid;place-items:center;font-size:12px;line-height:1}
.dragging .composer{border-color:var(--sky-400);border-style:dashed}

/* модалка */
.modal{position:fixed;inset:0;background:rgba(3,20,40,.55);backdrop-filter:blur(4px);display:grid;place-items:center;padding:20px;z-index:10}
.modal-card{width:min(440px,100%);background:var(--surface);border-radius:18px;padding:22px;box-shadow:0 30px 80px rgba(0,0,0,.35);animation:rise .2s ease both}
.modal-card h3{margin:0 0 8px;font-size:18px}
.modal-card p{margin:0 0 18px;color:var(--muted)}
.modal-actions{display:flex;gap:8px;flex-wrap:wrap}

@media (max-width:640px){
  .brand-sub,.pill-pilot{display:none}
  .brand-title{font-size:15px}
  .seg-label{display:none}
  .ctx{gap:8px}
  .seg button{padding:5px 10px}
  .msg.user{max-width:88%}
  .bot-body{padding:10px 12px}
  #support span{display:none}
  #support{padding:0 9px}
  .ticket-head b{font-size:14px}
  .ticket-head .btn-ghost span{display:none}
  .ticket dl{grid-template-columns:1fr;gap:2px}
  .ticket dd{margin-bottom:8px}
  .avatar{display:none}
  .hint{display:none}
}