/* Полноэкранный чат /assistant/: шапка, история, диалог, условия и материалы.
   Только классы: CSP страницы — style-src 'self'. Шрифт — системный стек (signal-home-system.css). */
body.assistant-chat-page{height:100vh;height:100dvh;overflow:hidden;background:var(--sr-paper)}
.assistant-chat-page .site-header,.assistant-chat-page .site-footer{display:none}
.assistant-chat-page #main{display:block;height:100%;padding:0;margin:0}
.chat-app{display:flex;flex-direction:column;height:100%;min-height:0;background:var(--sr-paper);color:var(--sr-text);font-family:var(--sr-font-text)}
.chat-app a:focus-visible,.chat-app button:focus-visible,.chat-app select:focus-visible{outline:3px solid #47742b;outline-offset:2px}

/* Шапка */
.chat-top{flex:none;display:flex;align-items:center;gap:12px;height:60px;padding:0 20px;box-sizing:border-box;border-bottom:1px solid var(--sr-line);background:var(--sr-paper)}
.chat-brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;color:var(--sr-ink);text-decoration:none;font-size:17px;font-weight:750;letter-spacing:-.02em}
.chat-brand img{display:block;flex:none}
.chat-pill{padding:4px 10px;border:1px solid var(--sr-line-strong);border-radius:var(--sr-r-pill);font:500 11px/1.4 var(--sr-font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--sr-text-2);white-space:nowrap}
.chat-top-actions{margin-left:auto;display:flex;align-items:center;gap:4px}
.chat-icon-button{display:none;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:0;border-radius:10px;background:transparent;color:var(--sr-ink);cursor:pointer}
.chat-icon-button:hover,.chat-icon-button[aria-expanded="true"]{background:var(--sr-tint)}
.chat-collapse{display:inline-flex;align-items:center;gap:6px;min-height:44px;min-width:44px;justify-content:center;padding:0 12px;box-sizing:border-box;border-radius:10px;color:var(--sr-ink);text-decoration:none;font-size:14px;font-weight:550}
.chat-collapse:hover{background:var(--sr-tint);color:var(--sr-ink)}

/* Три колонки: прокручивается только центр (и сами боковые колонки при переполнении) */
.chat-body{flex:1;min-height:0;display:grid;grid-template-columns:272px minmax(0,1fr) 320px}
.chat-side,.chat-rail{min-height:0;overflow-y:auto;box-sizing:border-box;background:var(--sr-paper);overscroll-behavior:contain}

/* История */
.chat-side{display:flex;flex-direction:column;gap:2px;padding:16px 12px;border-right:1px solid var(--sr-line)}
.chat-new{display:flex;align-items:center;justify-content:center;gap:8px;min-height:44px;margin:0 0 10px;padding:0 16px;border:0;border-radius:12px;background:var(--sr-ink);color:var(--sr-paper);font:650 15px/1.2 var(--sr-font-text);cursor:pointer}
.chat-new:hover{background:#26302a}.chat-new:disabled{opacity:.5;cursor:wait}
.chat-history .assistant-history-group{margin:0;padding:12px 10px 4px}
.chat-history .assistant-history-item{display:block;min-height:44px;padding:0 10px;border:0;border-radius:10px;font-size:14px;line-height:44px;color:var(--sr-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;overflow-wrap:normal}
.chat-history .assistant-history-item:hover{background:var(--sr-tint);text-decoration:none}
.chat-history .assistant-history-item[aria-current="true"]{background:var(--sr-sunken);font-weight:600}
.chat-history>p{margin:0;padding:8px 10px;font-size:13px;line-height:1.5;color:var(--sr-muted)}
.chat-side-foot{margin-top:auto;padding:14px 10px 4px;border-top:1px solid var(--sr-line)}
.chat-side-foot p{margin:0 0 8px;font-size:12px;line-height:1.5;color:var(--sr-muted)}
.chat-legal{display:flex;flex-wrap:wrap;gap:0 12px;margin-bottom:4px}
.chat-legal a{display:inline-flex;align-items:center;min-height:32px;font-size:12px;color:var(--sr-text-2)}
.chat-legal a:hover{color:var(--sr-ink)}
.chat-side-foot .chat-copy{margin:4px 0 0}

/* Диалог */
.chat-main{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--sr-sheet)}
.chat-scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;overflow-anchor:none}
.chat-column{width:100%;max-width:780px;margin:0 auto;padding:28px 24px;box-sizing:border-box}
.chat-thread{display:flex;flex-direction:column}
.chat-welcome{padding:5vh 0 8px}
.chat-welcome .srt{width:48px;height:48px}
.chat-welcome h2{margin:18px 0 10px;font:800 clamp(30px,3.6vw,40px)/1.1 var(--sr-font-text);letter-spacing:-.02em;color:var(--sr-ink)}
.chat-welcome>p{max-width:60ch;margin:0;font-size:16px;line-height:1.6;color:var(--sr-text-2)}
.chat-app .chat-examples{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:22px 0 16px}
.chat-app .chat-examples button{min-height:54px;padding:12px 16px;border:1px solid var(--sr-line-strong);border-radius:14px;background:var(--sr-paper);font:550 15px/1.35 var(--sr-font-text);color:var(--sr-ink);text-align:left;cursor:pointer}
.chat-app .chat-examples button:hover{border-color:var(--sr-ink);background:var(--sr-sheet)}
.chat-welcome .chat-welcome-note{font-size:14px;color:var(--sr-muted)}

.chat-app .assistant-turn{padding:0 0 28px;border:0}
.chat-app .assistant-turn[aria-busy="true"]{border-left:0}
.chat-app .assistant-user{width:fit-content;max-width:85%;margin:0 0 18px auto;padding:14px 18px;border-radius:18px 18px 4px 18px;background:var(--sr-sunken);font-size:16px;line-height:1.5;color:var(--sr-ink)}
.chat-app .assistant-answer-text{margin:8px 0 16px;font-size:16px;line-height:1.6;color:var(--sr-text)}
.chat-app .assistant-thinking small{font-family:var(--sr-font-mono)}
.chat-app .assistant-previous{margin:0 0 14px;border:1px solid var(--sr-line);border-radius:14px;overflow:hidden}
.chat-app .assistant-previous summary{padding:12px 16px;font-size:14px;color:var(--sr-text)}
.chat-app .assistant-previous[open]>summary{background:var(--sr-tint)}
.chat-app .assistant-previous>.assistant-turn{padding:18px 16px 4px}
.chat-app .assistant-results{gap:10px}
.chat-app .assistant-card{display:flex;flex-direction:column;padding:16px 18px;border:1px solid var(--sr-line-strong);border-radius:16px;background:var(--sr-sheet)}
.chat-app .assistant-card:hover{border-color:var(--sr-ink)}
.chat-app .assistant-card-top{align-items:center;font-size:12px;color:var(--sr-muted)}
.chat-app .assistant-card h3{margin:10px 0 4px;font:650 17px/1.35 var(--sr-font-text);letter-spacing:-.01em;color:var(--sr-ink)}
.chat-app .assistant-card h3 a{color:var(--sr-ink)}
.chat-app .assistant-customer{margin:0;font-size:13px;color:var(--sr-muted)}
.chat-app .assistant-facts{margin:12px 0 0;gap:10px 20px}
.chat-app .assistant-facts span{font-size:12px;color:var(--sr-muted)}
.chat-app .assistant-facts strong{font:500 15px/1.4 var(--sr-font-mono);color:var(--sr-ink)}
.chat-app .assistant-facts strong.assistant-deadline{font-size:13px;color:var(--sr-text-2)}
.chat-app .assistant-facts strong.assistant-deadline-soon{color:var(--sr-heat-text)}
.chat-app .assistant-match{margin:12px 0 0;padding-top:8px;border-top:1px dashed var(--sr-line-strong);font-size:13px;line-height:1.5;color:var(--sr-text-2)}
.chat-app .assistant-card-foot{margin-top:10px;font-size:12px;color:var(--sr-muted)}
.chat-app .assistant-card-foot a{color:var(--sr-ink)}
.chat-app .assistant-guide{color:var(--sr-ink)}
.chat-app .assistant-error{margin:0 0 14px}
.chat-app #assistant-resume{align-self:flex-start}
@media(prefers-reduced-motion:no-preference){.chat-app .assistant-card,.chat-app .chat-examples button,.chat-refine button{transition:border-color .15s,background-color .15s}}

/* Уточнения и поле ввода */
.chat-dock{flex:none;border-top:1px solid var(--sr-line);background:var(--sr-sheet)}
.chat-dock .chat-column{display:flex;flex-direction:column;gap:10px;padding:12px 24px 14px}
.chat-refine:empty,.chat-refine:has(.assistant-followups:empty){display:none}
.chat-refine .assistant-followups{display:flex;flex-wrap:wrap;gap:8px;margin:0}
.chat-refine .assistant-followups button{flex:none;min-height:44px;padding:0 14px;border:1px solid var(--sr-line-strong);border-radius:var(--sr-r-pill);background:var(--sr-paper);font:500 13px/1.3 var(--sr-font-text);color:var(--sr-ink);cursor:pointer}
.chat-refine .assistant-followups button:hover{border-color:var(--sr-ink);background:var(--sr-sheet)}
.chat-composer{margin:0}
.chat-composer-box{display:flex;flex-direction:column;gap:4px;padding:6px 8px 8px 16px;border:1.5px solid var(--sr-ink);border-radius:16px;background:var(--sr-sheet)}
.chat-composer-box:focus-within{outline:3px solid #47742b;outline-offset:2px}
.chat-composer textarea{display:block;width:100%;min-height:52px;max-height:30vh;box-sizing:border-box;padding:8px 0;border:0;resize:none;background:transparent;font:400 16px/1.45 var(--sr-font-text);color:var(--sr-ink);field-sizing:content}
.chat-composer textarea:focus-visible{outline:none}
.chat-composer textarea::placeholder{color:var(--sr-placeholder)}
.chat-composer-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px}
.chat-keys{margin-right:auto;font-size:11px;color:var(--sr-muted)}
.chat-send{min-height:44px;padding:0 18px;border:1.5px solid var(--sr-ink);border-radius:11px;background:var(--sr-signal);color:var(--sr-ink);font:650 15px/1 var(--sr-font-text);cursor:pointer;white-space:nowrap}
.chat-send:disabled{opacity:.5;cursor:not-allowed}
.chat-stop{min-height:44px;padding:0 14px;border:1px solid var(--sr-line-strong);border-radius:11px;background:var(--sr-sheet);color:var(--sr-ink);font:600 14px/1 var(--sr-font-text);cursor:pointer}
.chat-stop:hover{border-color:var(--sr-ink)}
.chat-fineprint{margin:0;font-size:12px;line-height:1.5;color:var(--sr-muted)}
.chat-fineprint a{color:var(--sr-text-2)}

/* Правая колонка: условия и материалы (без рекламы) */
.chat-rail{display:flex;flex-direction:column;gap:22px;padding:20px 18px;border-left:1px solid var(--sr-line)}
.chat-rail-section{display:flex;flex-direction:column;gap:10px}
.chat-label{margin:0;font:500 11px/1.5 var(--sr-font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--sr-muted)}
.chat-rail #assistant-conditions{display:flex;flex-direction:column;gap:6px}
.chat-rail #assistant-conditions>p{margin:0;font-size:13px;line-height:1.55;color:var(--sr-text-2)}
.chat-rail #assistant-conditions>p.assistant-condition-subject{font-size:15px;font-weight:600;color:var(--sr-ink)}
.chat-rail .assistant-chip{margin:0;padding:0 0 0 12px;border:1px solid var(--sr-line-strong);border-radius:14px;background:var(--sr-sheet);font-size:13px;line-height:1.4;color:var(--sr-ink)}
.chat-rail .assistant-chip button{flex:none;border-radius:50%}
.chat-rail .assistant-chip button:hover{background:var(--sr-tint)}
.chat-rail .assistant-state-label{margin-top:6px;color:var(--sr-text-2)}
.chat-rail .assistant-state-label select{border-color:var(--sr-line-strong);border-radius:10px;font-size:13px}
.chat-material{display:grid;grid-template-columns:64px minmax(0,1fr);align-items:center;gap:2px 12px;padding:10px;border:1px solid var(--sr-line);border-radius:14px;background:var(--sr-sheet);color:var(--sr-ink);text-decoration:none}
.chat-material:hover{border-color:var(--sr-ink);color:var(--sr-ink)}
.chat-material .chat-material-art{grid-row:1/span 2;display:block}
.chat-material .chat-material-art img{display:block;width:64px;height:48px;object-fit:cover;border-radius:8px;mix-blend-mode:multiply}
.chat-material-title{font-size:14px;line-height:1.35;font-weight:600}
.chat-material-time{font:500 11px/1.5 var(--sr-font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--sr-muted)}
.chat-material-plain{display:flex;flex-direction:column;align-items:flex-start;gap:4px}
.chat-material-wide{display:flex;flex-direction:column;align-items:stretch;gap:8px;padding:0 0 14px;overflow:hidden}
.chat-material-wide .chat-material-art img{width:100%;height:120px;border-radius:0;object-position:center 40%}
.chat-material-wide .chat-material-title{padding:0 14px;font-size:15px;font-weight:650}
.chat-material-wide .chat-material-time{padding:0 14px}
.chat-material-wide.chat-material-plain{padding-top:14px}
.chat-terms{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.chat-terms a{display:inline-flex;align-items:center;min-height:36px;padding:0 12px;box-sizing:border-box;border:1px solid var(--sr-line-strong);border-radius:var(--sr-r-pill);font-size:13px;color:var(--sr-ink);text-decoration:none}
.chat-terms a:hover{border-color:var(--sr-ink)}

/* Боковые колонки становятся выдвижными панелями */
.chat-backdrop{display:none}
@media(max-width:1099px){
  .chat-body{grid-template-columns:272px minmax(0,1fr)}
  .chat-rail-toggle{display:inline-flex}
  .chat-rail{display:none}
  .chat-rail.is-open{display:flex;position:fixed;top:60px;right:0;bottom:0;z-index:30;width:min(340px,90vw);box-shadow:var(--sr-shadow-card)}
  .chat-backdrop{display:block;position:fixed;inset:60px 0 0;z-index:20;background:rgba(14,20,16,.28)}
}
@media(max-width:759px){
  .chat-top{gap:8px;padding:0 8px 0 16px}
  .chat-body{grid-template-columns:minmax(0,1fr)}
  .chat-history-toggle{display:inline-flex}
  .chat-side{display:none}
  .chat-side.is-open{display:flex;position:fixed;top:60px;left:0;bottom:0;z-index:30;width:min(320px,86vw);border-right:1px solid var(--sr-line);box-shadow:var(--sr-shadow-card)}
  .chat-collapse{padding:0}
  .chat-collapse-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .chat-column{padding:20px 16px}
  .chat-dock .chat-column{padding:10px 16px 12px;gap:8px}
  .chat-keys{display:none}
  .chat-refine .assistant-followups{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -16px;padding:0 16px}
  .chat-refine .assistant-followups::-webkit-scrollbar{display:none}
  .chat-app .chat-examples button{min-height:48px;padding:10px 12px;font-size:14px}
  .chat-app .assistant-user{max-width:92%;font-size:15px}
  .chat-app .assistant-card{padding:14px}
  .chat-app .assistant-card h3{font-size:16px}
  .chat-app .assistant-facts strong{font-size:14px}
  .chat-composer textarea{min-height:44px}
  .chat-fineprint{font-size:11px;line-height:1.4}
}
@media(max-width:520px){
  .chat-brand span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
}