:root{
  --bg:#f7f7f4;--paper:#fff;--ink:#15161f;--muted:#5b5e6d;--line:#e3e3e8;--accent:#2438e8;--accent-ink:#fff;
  --user:#eceefe;--warn-bg:#fdf3e1;--warn-ink:#744b0c;--focus:#2438e8;
  --brand:linear-gradient(90deg,#174dff,#d01ffd 55%,#f3804f);
  --height:100dvh;--measure:680px;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,sans-serif;color:var(--ink);background:var(--bg);color-scheme:light dark;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#111218;--paper:#1b1d26;--ink:#eceef6;--muted:#a4a8b8;--line:#2d303c;--accent:#95a1ff;--accent-ink:#0d0f1a;
  --user:#252a47;--warn-bg:#35290f;--warn-ink:#f4d08c;--focus:#95a1ff;
}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);overflow:hidden;-webkit-text-size-adjust:100%}
button,textarea{font:inherit;color:inherit}
button,a,summary{touch-action:manipulation}
button{cursor:pointer}
a{color:var(--accent);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:4px}
[hidden]{display:none!important}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;top:-80px;left:12px;background:var(--paper);padding:12px;z-index:3}.skip:focus{top:12px}

/* Frame: header, scrolling thread, composer pinned to the visual viewport. */
.shell{height:var(--height);display:flex;flex-direction:column}
header{position:relative;flex:none;height:56px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;max-width:calc(var(--measure) + 40px);width:100%;margin:0 auto}
header:before{content:"";position:fixed;inset:0 0 auto;height:3px;background:var(--brand)}
.event{font-size:13px;font-weight:650;letter-spacing:.06em}
.event span{color:var(--muted);font-weight:450;margin-left:4px}
.reset{border:0;background:transparent;color:var(--muted);font-size:14px;min-height:44px;padding:0 4px}
.reset:hover{color:var(--accent)}
main{position:relative;flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;scroll-padding-top:12px}
.thread{max-width:calc(var(--measure) + 40px);margin:0 auto;padding:8px 20px 24px}

.welcome{padding:28px 0 28px}
.eyebrow{margin:0 0 14px;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.welcome-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.play{display:flex;align-items:center;justify-content:center;text-align:center;width:112px;min-height:88px;padding:12px;border-radius:18px;background:var(--brand);color:#fff;font-size:14px;font-weight:700;line-height:1.2;text-decoration:none;box-shadow:0 8px 24px rgb(120 60 230 / .25)}
.welcome-actions{flex:none;display:flex;flex-direction:column;align-items:stretch;gap:8px;width:112px}
.book{display:flex;align-items:center;justify-content:center;min-height:40px;padding:0 10px;border-radius:999px;border:1.5px solid var(--accent);color:var(--accent);background:var(--paper);font-size:14px;font-weight:700;text-decoration:none;text-align:center}
.book:hover{background:var(--user)}
.play:hover{filter:brightness(1.06)}
.play:active{transform:scale(.97)}
@media (min-width:700px){.welcome-actions{width:auto}.play{width:auto;min-height:0;padding:16px 26px;border-radius:999px;font-size:16px}.book{min-height:48px;font-size:16px}}
h1{margin:0;font-size:clamp(36px,9vw,52px);line-height:1.06;letter-spacing:-.035em;font-weight:650}
h1 span{display:block;color:var(--accent)}
.presented{display:flex;align-items:center;gap:10px;margin:18px 0 0;font-size:14px;color:var(--muted)}
.presented img{display:block;height:24px;width:auto}

/* Messages */
#log{display:flex;flex-direction:column;gap:22px}
.msg{display:flex;gap:12px;align-items:flex-start;scroll-margin-top:12px}
.msg p{margin:0 0 10px}.msg p:last-child{margin-bottom:0}
.bot .avatar{flex:none;width:24px;height:24px;margin-top:2px}
.bot .bubble{flex:1;min-width:0;font-size:16px;line-height:1.55;overflow-wrap:anywhere}
.user{justify-content:flex-end}
.user .bubble{max-width:82%;background:var(--user);padding:10px 14px;border-radius:18px 18px 6px 18px;font-size:16px;line-height:1.45;white-space:pre-wrap;overflow-wrap:anywhere}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 2px}
.chips button{border:1px solid var(--line);background:var(--paper);color:var(--accent);border-radius:999px;padding:0 14px;min-height:40px;font-size:15px;font-weight:550;line-height:1.2;text-align:left}
.chips button:hover{border-color:var(--accent)}
.examples{margin:0 0 12px;padding:0 0 0 14px;list-style:none;border-left:2px solid var(--line)}
.examples li{padding:2px 0;font-weight:550}
.examples li:before{content:"“"}
.examples li:after{content:"”"}
.promo{padding:10px 12px;border-radius:12px;background:var(--user);font-size:15px}

/* Result blocks inside a reply */
.cta{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.cta a{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;background:var(--accent);color:var(--accent-ink);font-weight:600;font-size:15px;text-decoration:none}.cta a+a{background:var(--paper);color:var(--accent);border:1px solid var(--line)}
.points{margin:6px 0 12px;padding-left:20px}.points li{margin:4px 0}
.results{list-style:none;margin:12px 0 14px;padding:0;border:1px solid var(--line);border-radius:14px;background:var(--paper);overflow:hidden}
.results>li+li{border-top:1px solid var(--line)}
.result summary{list-style:none;cursor:pointer;padding:12px 40px 12px 14px;position:relative;min-height:48px}
.result summary::-webkit-details-marker{display:none}
.result summary:after{content:"";position:absolute;right:16px;top:20px;width:7px;height:7px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:rotate(45deg);transition:transform .15s}
.result[open] summary:after{transform:rotate(225deg);top:24px}
.result strong{display:block;font-size:15px;font-weight:600;line-height:1.35}
.kind{font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.meta{display:block;margin-top:3px;font-size:14px;line-height:1.4;color:var(--muted)}
.detail{padding:0 14px 14px;font-size:14px;line-height:1.6}
.detail p{margin:0 0 10px}
.detail .excerpt{color:var(--muted);display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;overflow:hidden}
.links{display:flex;flex-wrap:wrap;gap:0 16px}
.links a{display:inline-flex;align-items:center;min-height:40px;font-size:14px}
.warning{margin:10px 0;padding:10px 12px;border-radius:10px;background:var(--warn-bg);color:var(--warn-ink);font-size:14px;line-height:1.5}

/* Attachments: original PDFs and maps */
.attachment{display:flex;align-items:center;gap:12px;margin:10px 0;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);text-decoration:none;min-height:56px}
.attachment:hover{border-color:var(--accent)}
.attachment .file{flex:none;display:grid;place-items:center;width:34px;height:40px;border-radius:6px;background:#d93838;color:#fff;font-size:10px;font-weight:700;letter-spacing:.04em}
.attachment span{min-width:0}
.attachment b{display:block;font-size:14px;font-weight:600;line-height:1.3;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.attachment small{font-size:13px;color:var(--muted)}
.map{margin:12px 0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper)}
.map a{display:block}
.map img{display:block;width:100%;height:auto;max-height:420px;object-fit:contain;background:#fff}
.map figcaption{display:flex;justify-content:space-between;gap:12px;padding:8px 12px;font-size:13px;color:var(--muted)}

/* Pending, stopped and failed states */
.typing{display:inline-flex;gap:5px;align-items:center;height:24px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted);opacity:.35;animation:pulse 1.2s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
.retry{border:1px solid var(--line);background:var(--paper);color:var(--accent);border-radius:999px;padding:0 16px;min-height:40px;font-size:14px;font-weight:550}
.muted{color:var(--muted)}

/* Composer */
.composer{flex:none;width:100%;max-width:calc(var(--measure) + 40px);margin:0 auto;padding:8px 20px calc(12px + env(safe-area-inset-bottom));background:var(--bg)}
form{display:flex;align-items:flex-end;gap:8px;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:6px 6px 6px 16px;box-shadow:0 2px 12px rgb(20 22 40 / .06)}
form:focus-within{border-color:var(--accent)}
textarea:focus-visible{outline:none}
textarea{flex:1;min-width:0;border:0;background:transparent;resize:none;outline:none;font-size:16px;line-height:1.4;padding:9px 0;max-height:140px;overflow-y:auto}
textarea::placeholder{color:var(--muted)}
.action{flex:none;display:grid;place-items:center;width:40px;height:40px;border:0;border-radius:50%;background:var(--accent);color:var(--accent-ink)}
.action svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.action.stop svg{fill:currentColor;stroke:none}
.action:disabled{opacity:.35;cursor:default}

@keyframes pulse{50%{opacity:1}}
@media (min-width:700px){header{height:64px}.welcome{padding:48px 0 36px}.thread{padding-bottom:32px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}