:root{--bg: #ffffff;--fg: #1a1a1a;--muted: #5c5c5c;--line: #e4e4e7;--accent: #1f5c99;--accent-fg: #ffffff;--bubble-bot: #f4f4f5;--danger: #b42318;--radius: 12px}@media(prefers-color-scheme:dark){:root{--bg: #18181b;--fg: #f4f4f5;--muted: #a1a1aa;--line: #2f2f35;--accent: #5b9bd5;--accent-fg: #0b1220;--bubble-bot: #232329;--danger: #f97066}}*{box-sizing:border-box}html,body{height:100%;margin:0}body{display:flex;flex-direction:column;background:var(--bg);color:var(--fg);font:15px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}header{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line)}header h1{font-size:15px;font-weight:600;margin:0}header p{margin:2px 0 0;font-size:12px;color:var(--muted)}#close{background:none;border:0;color:var(--muted);cursor:pointer;font-size:20px;line-height:1;padding:4px 8px;border-radius:6px}#close:hover{background:var(--bubble-bot)}#log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.msg{max-width:85%;padding:10px 13px;border-radius:var(--radius);white-space:pre-wrap;overflow-wrap:anywhere}.msg.user{align-self:flex-end;background:var(--accent);color:var(--accent-fg);border-bottom-right-radius:4px}.msg.bot{align-self:flex-start;background:var(--bubble-bot);border-bottom-left-radius:4px}.msg.error{align-self:stretch;max-width:100%;background:transparent;border:1px solid var(--danger);color:var(--danger);font-size:13px}.cites{margin-top:8px;padding-top:8px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.book{display:inline-block;margin-top:10px;padding:8px 14px;background:var(--accent);color:var(--accent-fg);border-radius:8px;text-decoration:none;font-size:13px;font-weight:600}.suggestions[hidden]{display:none}.suggestions{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 12px}.suggestions button{background:none;border:1px solid var(--line);color:var(--fg);border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer}.suggestions button:hover{border-color:var(--accent)}form{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line)}textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--bg);color:var(--fg);font:inherit;max-height:120px}textarea:focus,button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:1px}form button{border:0;border-radius:10px;padding:0 16px;background:var(--accent);color:var(--accent-fg);font-weight:600;cursor:pointer}form button:disabled{opacity:.5;cursor:default}footer{padding:0 16px 10px;font-size:11px;color:var(--muted);text-align:center}.typing span{display:inline-block;width:6px;height:6px;margin-right:3px;border-radius:50%;background:var(--muted);animation:blink 1.2s infinite}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}@keyframes blink{0%,60%,to{opacity:.25}30%{opacity:1}}@media(prefers-reduced-motion:reduce){.typing span{animation:none;opacity:.6}}