#book-chat-root{font-family:Arial,Helvetica,sans-serif;color:var(--ink,#191919)}#book-chat-root *{box-sizing:border-box}#book-chat-root button,#book-chat-root textarea{font:inherit;color:inherit}#book-chat-root button{cursor:pointer;touch-action:manipulation}#book-chat-root button:disabled{opacity:.45;cursor:default}#book-chat-root :is(button,textarea,a,summary):focus-visible{outline:2px solid var(--focus,#1559a6);outline-offset:3px}.book-chat-launcher{position:fixed;bottom:max(22px,env(safe-area-inset-bottom));right:22px;z-index:80;display:flex;align-items:center;gap:24px;border:1px solid var(--rule,#ddd);border-radius:8px;padding:14px 18px;background:var(--paper,#fff);box-shadow:0 4px 18px #0002;font-size:15px;font-weight:600}.book-chat-launcher[hidden]{display:none}.book-chat-dialog{position:fixed;inset:auto 22px 22px auto;z-index:100;width:min(440px,calc(100vw - 44px));max-width:100vw;height:min(712px,calc(100dvh - 44px));max-height:calc(100dvh - 44px);padding:0;margin:0;border:1px solid var(--rule,#ddd);border-radius:14px;background:var(--paper,#fff);color:var(--ink,#191919);box-shadow:0 12px 50px #0003;overflow:hidden}.book-chat-dialog::backdrop{background:#0005}.book-chat-reading{margin:0;padding:0 16px 10px;font-size:11px;line-height:1.45;color:var(--muted,#666);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;flex-shrink:0}.book-chat-panel{display:flex;flex-direction:column;height:100%;min-height:0}.book-chat-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px 6px;flex-shrink:0}.book-chat-header h2{margin:0;font-size:18px;line-height:1.3;font-weight:600;letter-spacing:-.04em}.book-chat-header button{display:grid;place-items:center;width:40px;height:40px;background:transparent;border:1px solid var(--rule,#ddd);border-radius:50%;padding:0;line-height:1;flex-shrink:0}.book-chat-note{font-size:11px;line-height:1.4;color:var(--muted,#666);margin:0;padding:0 16px 8px;flex-shrink:0}.book-chat-panel>[data-slot=message-scroller]{position:relative;display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden;border-top:1px solid var(--rule,#ddd)}.book-chat-panel [data-slot=message-scroller-viewport]{flex:1;min-height:0;width:100%;min-width:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable}.book-chat-panel [data-slot=message-scroller-content]{display:flex;flex-direction:column;gap:18px;padding:18px 16px;min-height:100%;box-sizing:border-box}.book-chat-panel [data-slot=message-scroller-item]{flex-shrink:0;min-width:0}.book-chat-panel [data-slot=message]{display:flex;min-width:0;width:100%;font-size:15px}.book-chat-panel [data-slot=message-content]{display:flex;flex-direction:column;gap:9px;min-width:0;width:100%}.book-chat-panel [data-slot=message-header]{font-size:11px;font-weight:600;color:var(--muted,#666)}.book-chat-panel [data-slot=message][data-align=end] [data-slot=message-header]{text-align:right}.book-chat-panel [data-slot=bubble]{max-width:100%;min-width:0}.book-chat-panel [data-slot=bubble-content]{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65}.book-chat-panel [data-slot=bubble][data-variant=muted]{align-self:flex-end;max-width:90%;padding:10px 14px;border-radius:12px;background:var(--tip-bg,#f6f1e7)}.book-chat-panel .book-chat-citation{font-size:12px;color:var(--hover,#1559a6);text-decoration:underline;white-space:nowrap}.book-chat-welcome h3{margin:4px 0 12px;font-size:24px;letter-spacing:-.035em;font-weight:500}.book-chat-welcome p{font-size:14px;line-height:1.6;color:var(--muted,#666);margin:0 0 24px}.book-chat-welcome>div{display:flex;flex-direction:column;gap:8px}.book-chat-welcome button{display:flex;justify-content:space-between;gap:12px;text-align:left;line-height:1.4;background:transparent;border:1px solid var(--rule,#ddd);border-radius:6px;padding:12px;font-size:13px}.book-chat-sources{font-size:12px;line-height:1.5}.book-chat-sources summary{cursor:pointer;color:var(--muted,#666);padding:4px 0}.book-chat-sources a{display:flex;flex-direction:column;gap:6px;border:1px solid var(--rule,#ddd);border-radius:6px;padding:10px;margin-top:8px;text-decoration:none;color:var(--ink,#191919);overflow-wrap:anywhere}.book-chat-sources a span{color:var(--muted,#666);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.book-chat-error{margin:0;font-size:13px;line-height:1.5;color:var(--accent,#ab322b)}.book-chat-retry{align-self:flex-start;background:transparent;border:1px solid var(--rule,#ddd);border-radius:4px;padding:7px 10px;font-size:12px}.book-chat-scroll{align-self:center;flex-shrink:0;margin:4px 0 8px;border:1px solid var(--rule,#ddd);border-radius:20px;background:var(--paper,#fff);padding:8px 12px;font-size:12px;box-shadow:0 2px 8px #0002}.book-chat-scroll[data-active=false]{display:none}.book-chat-form{padding:10px 16px max(12px,env(safe-area-inset-bottom));border-top:1px solid var(--rule,#ddd);background:var(--paper,#fff);flex-shrink:0}.book-chat-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.book-chat-form textarea{flex:1;min-width:0;width:100%;max-height:104px;min-height:44px;box-sizing:border-box;resize:none;border:1px solid var(--rule,#ddd);border-radius:6px;padding:10px 12px;background:transparent;font-size:15px;line-height:1.5}.book-chat-compose{display:flex;align-items:flex-end;gap:8px}.book-chat-form button{border:0;border-radius:5px;padding:10px 12px;background:var(--ink,#191919);color:var(--paper,#fff)!important;font-size:12px;font-weight:600;flex-shrink:0;min-height:44px;min-width:60px}@media(max-width:540px){.book-chat-dialog{inset:var(--book-chat-top,0px) 0 auto;width:100%;height:var(--book-chat-height,100dvh);max-height:var(--book-chat-height,100dvh);border:0;border-radius:0}.book-chat-reading{padding-left:18px;padding-right:18px}.book-chat-header{padding:10px 18px 6px}.book-chat-note{padding-left:18px;padding-right:18px}.book-chat-panel [data-slot=message-scroller-content]{padding:18px}.book-chat-form{padding-left:18px;padding-right:18px}.book-chat-form textarea{font-size:16px}.book-chat-launcher{right:14px;bottom:max(14px,env(safe-area-inset-bottom));padding:12px 14px;font-size:13px}}@media print{#book-chat-root{display:none}}.book-chat-markdown{white-space:normal;font-size:14px;line-height:1.65}.book-chat-markdown>:first-child{margin-top:0}.book-chat-markdown>:last-child{margin-bottom:0}.book-chat-markdown p{margin:0 0 12px}.book-chat-markdown :is(h1,h2,h3,h4,h5,h6){font-size:1.1em;line-height:1.3;margin:18px 0 10px;letter-spacing:-.02em}.book-chat-markdown :is(ul,ol){padding-left:22px;margin:10px 0 14px}.book-chat-markdown li+li{margin-top:5px}.book-chat-markdown blockquote{margin:14px 0;padding-left:12px;border-left:2px solid var(--rule,#ddd);color:var(--muted,#666)}.book-chat-markdown code{font:12px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--tip-bg,#f6f1e7);padding:2px 4px;border-radius:3px}.book-chat-markdown pre{max-width:100%;overflow:auto;white-space:pre;overscroll-behavior:contain;background:var(--tip-bg,#f6f1e7);padding:12px;border-radius:6px}.book-chat-markdown pre code{padding:0;white-space:pre}.book-chat-markdown table{display:block;max-width:100%;overflow:auto;border-collapse:collapse;font-size:12px}.book-chat-markdown :is(th,td){padding:6px 8px;border:1px solid var(--rule,#ddd);text-align:left}.book-chat-markdown a{color:var(--hover,#1559a6)}.book-chat-markdown hr{border:0;border-top:1px solid var(--rule,#ddd);margin:18px 0}.book-chat-progress{font-size:12px;line-height:1.5;color:var(--muted,#666)}.book-chat-progress summary{cursor:pointer;padding:4px 0}.book-chat-progress:not([open]) ol{display:none}.book-chat-progress ol{list-style:none;padding:0;margin:8px 0;display:flex;flex-direction:column;gap:6px}.book-chat-progress li{display:flex;align-items:center;gap:8px}.book-chat-progress li[aria-current=step]{color:var(--ink,#191919);font-weight:600}.book-chat-progress li span{width:12px;text-align:center}.book-chat-feedback{font-size:11px;color:var(--muted,#666)}.book-chat-feedback>div{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:6px}.book-chat-feedback button{background:transparent;border:1px solid var(--rule,#ddd);border-radius:4px;padding:6px 8px;font-size:11px}.book-chat-feedback button[aria-pressed=true]{background:var(--tip-bg,#f6f1e7)}@media(max-height:480px){.book-chat-form textarea{max-height:72px}.book-chat-header{padding-top:6px}.book-chat-reading,.book-chat-note{padding-bottom:6px}}