:root{
  --ink:#171a1c; --ink-2:#3a4247;
  --paper:#f5f6f7; --surface:#ffffff; --sunk:#eceff1; --sunk-2:#e1e5e8;
  --line:#e3e7ea; --muted:#5f6b72; --faint:#98a4ab;
  --accent:#0f766e; --accent-ink:#ffffff; --accent-soft:#e3f3f1;
  --bubble:#1f2426; --bubble-ink:#ffffff;
  --warn:#b4432e; --warn-soft:#fbeae6;
  --sans:"Figtree",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --pad:clamp(16px,5vw,32px);
  --shadow:0 1px 2px rgba(15,23,26,.05),0 8px 24px -12px rgba(15,23,26,.16);
  --shadow-2:0 1px 2px rgba(15,23,26,.06),0 18px 40px -16px rgba(15,23,26,.24);
  --r-card:14px; --r-box:20px;
}
@media (prefers-color-scheme:dark){
  :root{
    --ink:#e8ecee; --ink-2:#b9c2c8;
    --paper:#121516; --surface:#1b1f21; --sunk:#242a2d; --sunk-2:#2d3438;
    --line:#2a3033; --muted:#98a4ab; --faint:#6c787f;
    --accent:#2dd4bf; --accent-ink:#0b1a18; --accent-soft:#163430;
    --bubble:#2dd4bf; --bubble-ink:#0b1a18;
    --warn:#f08a75; --warn-soft:#3a201b;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
    --shadow-2:0 1px 2px rgba(0,0,0,.5),0 18px 40px -16px rgba(0,0,0,.7);
  }
}

*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
  display:flex;justify-content:center;
}
.app{width:100%;max-width:840px;display:flex;flex-direction:column;height:100dvh;position:relative}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

.bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:calc(12px + env(safe-area-inset-top,0px)) var(--pad) 10px;flex:0 0 auto;
  position:sticky;top:0;z-index:2;
  background:color-mix(in srgb,var(--paper) 86%,transparent);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:600;letter-spacing:-.01em}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.brand-name{font-size:15px}
.newchat{
  font:inherit;font-size:14px;color:var(--muted);background:transparent;
  border:1px solid var(--line);border-radius:999px;padding:6px 12px;cursor:pointer;
  display:inline-flex;align-items:center;gap:6px;transition:background .15s ease,color .15s ease;
}
.newchat:hover{background:var(--sunk);color:var(--ink)}
.newchat:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.newchat[hidden]{display:none}

#stage{
  flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;
  display:flex;flex-direction:column;scroll-behavior:smooth;
}
#stage.empty{justify-content:flex-end}
.hero{padding:0 var(--pad) 20px;text-align:center;flex:0 0 auto}
.hero h1{
  margin:0 0 8px;font-size:clamp(26px,6vw,38px);font-weight:600;
  letter-spacing:-.03em;line-height:1.12;text-wrap:balance;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p{margin:0 auto;max-width:34ch;color:var(--muted);font-size:clamp(15px,3.6vw,17px)}
#stage:not(.empty) .hero{display:none}

.dock{flex:0 0 auto;padding:12px var(--pad) 10px}
#stage.empty ~ .dock{padding-top:22px}
.composer{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-box);
  box-shadow:var(--shadow);padding:12px 12px 10px;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.composer:focus-within{box-shadow:var(--shadow-2);border-color:var(--accent)}
.composer textarea{
  width:100%;border:0;background:transparent;font:inherit;color:var(--ink);
  resize:none;outline:none;max-height:180px;line-height:1.55;padding:4px 4px 2px;
}
.composer textarea::placeholder{color:var(--faint)}
.tools{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:6px}
.hint{font-size:12px;color:var(--faint)}
.send{
  width:38px;height:38px;flex:0 0 auto;border:0;border-radius:50%;
  background:var(--accent);color:var(--accent-ink);cursor:pointer;display:grid;place-items:center;
  transition:transform .12s ease,opacity .12s ease;
}
.send:hover:not(:disabled){transform:translateY(-1px)}
.send:disabled{opacity:.3;cursor:default}
.send:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:14px var(--pad) 0}
#stage:not(.empty) ~ .dock .chips{display:none}
.chips button{
  font:inherit;font-size:14px;color:var(--ink);background:var(--surface);
  border:1px solid var(--line);border-radius:999px;padding:8px 15px;cursor:pointer;
  display:inline-flex;align-items:center;gap:7px;
  transition:transform .12s ease,box-shadow .12s ease,border-color .12s ease;
}
.chips button:hover{transform:translateY(-1px);box-shadow:var(--shadow);border-color:var(--sunk-2)}
.chips button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.chips svg{width:15px;height:15px;color:var(--accent);flex:0 0 auto}

.turn{padding:0 var(--pad);margin-bottom:28px;animation:rise .22s ease both}
.turn:first-of-type{margin-top:8px}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.me{display:flex;justify-content:flex-end}
.me>div{
  background:var(--bubble);color:var(--bubble-ink);border-radius:20px 20px 6px 20px;
  padding:10px 16px;max-width:min(78%,46ch);overflow-wrap:anywhere;white-space:pre-wrap;
}
.bot{display:grid;grid-template-columns:28px 1fr;gap:12px;align-items:start}
.avatar{
  width:28px;height:28px;border-radius:50%;background:var(--accent-soft);
  display:grid;place-items:center;margin-top:4px;
}
.avatar i{width:10px;height:10px;border-radius:50%;background:var(--accent);display:block}
.body{min-width:0}

.say{max-width:min(68ch,100%);overflow-wrap:anywhere}
.say>*:first-child{margin-top:0}
.say>*:last-child{margin-bottom:0}
.say p{margin:0 0 .8em}
.say h1,.say h2,.say h3,.say h4{margin:1.1em 0 .4em;line-height:1.3;letter-spacing:-.01em;font-weight:600}
.say h1{font-size:1.25em}
.say h2{font-size:1.15em}
.say h3,.say h4{font-size:1.02em}
.say ul,.say ol{margin:0 0 .9em;padding-left:1.35em}
.say li{margin:.28em 0;padding-left:.15em}
.say li::marker{color:var(--muted)}
.say strong{font-weight:600}
.say a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
.say code{
  font-family:var(--mono);font-size:.86em;background:var(--sunk);
  padding:.12em .4em;border-radius:6px;
}
.say pre{
  background:var(--sunk);border-radius:12px;padding:12px 14px;overflow-x:auto;
  margin:0 0 .9em;font-size:.86em;line-height:1.5;
}
.say pre code{background:transparent;padding:0;font-size:inherit}
.say blockquote{margin:0 0 .9em;padding:.2em 0 .2em 1em;border-left:3px solid var(--sunk-2);color:var(--muted)}
.say hr{border:0;border-top:1px solid var(--line);margin:1em 0}

.cite{
  display:inline-block;min-width:19px;height:19px;padding:0 5px;margin:0 1px;
  border-radius:6px;background:var(--sunk);color:var(--ink-2);
  font-size:12px;font-weight:600;line-height:19px;text-align:center;
  cursor:pointer;vertical-align:1px;transition:background .12s ease,color .12s ease;
}
.cite:hover,.cite.on{background:var(--accent);color:var(--accent-ink)}

.srcline{display:flex;align-items:center;gap:7px;margin:16px 0 2px;font-size:13px;color:var(--muted)}
.srcline svg{width:14px;height:14px;color:var(--faint)}

.shelf{
  display:flex;gap:12px;overflow-x:auto;overflow-y:hidden;
  padding:12px 0 10px;scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.shelf::-webkit-scrollbar{display:none}
.card{
  flex:0 0 168px;scroll-snap-align:start;text-decoration:none;color:inherit;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease;
}
.card:hover,.card:focus-visible{transform:translateY(-2px);box-shadow:var(--shadow-2);outline:none}
.card.on{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft),var(--shadow-2)}
.card,.card *{text-decoration:none;color:inherit}
.shot{aspect-ratio:1;background:var(--sunk);display:grid;place-items:center;overflow:hidden}
.shot img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
@media (prefers-color-scheme:dark){.shot{background:#f1f3f4}.shot img{mix-blend-mode:normal}}
.shot span{font-size:12px;color:var(--faint);padding:10px;text-align:center}
.meat{padding:10px 12px 12px;display:flex;flex-direction:column;gap:8px;flex:1;min-width:0}
.card h3{
  margin:0;font-size:13.5px;font-weight:500;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:6px;min-width:0}
.cost{font-size:15px;font-weight:600;letter-spacing:-.015em;white-space:nowrap;font-variant-numeric:tabular-nums}
.pill{
  font-size:11px;font-weight:500;padding:3px 8px;border-radius:999px;white-space:nowrap;
  background:var(--accent-soft);color:var(--accent);
}
.pill.no{background:var(--warn-soft);color:var(--warn)}
.pill.kind{background:var(--sunk);color:var(--muted)}

.sk{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);flex:0 0 168px;overflow:hidden}
.sk .shot,.sk b{
  background:linear-gradient(90deg,var(--sunk) 25%,var(--sunk-2) 37%,var(--sunk) 63%);
  background-size:400% 100%;animation:sweep 1.4s ease infinite;
}
.sk .meat{gap:7px}
.sk b{display:block;height:11px;border-radius:4px}
.sk b:nth-child(2){width:72%}
.sk b:nth-child(3){width:44%;height:14px;margin-top:4px}
@keyframes sweep{0%{background-position:100% 0}100%{background-position:0 0}}

.think{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:15px;min-height:28px}
.think i{
  width:16px;height:16px;border-radius:50%;flex:0 0 auto;
  border:2px solid var(--sunk-2);border-top-color:var(--accent);animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.tick{
  display:inline-block;width:8px;height:16px;margin-left:2px;border-radius:2px;
  background:var(--accent);vertical-align:-2px;animation:fade .9s ease-in-out infinite;
}
@keyframes fade{0%,100%{opacity:.15}50%{opacity:1}}

.acts{display:flex;gap:2px;margin-top:12px}
.acts button{
  font:inherit;font-size:13px;color:var(--muted);background:transparent;border:0;
  border-radius:8px;padding:5px 9px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;
}
.acts button:hover{background:var(--sunk);color:var(--ink)}
.acts button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.acts button.done{color:var(--accent)}
.acts svg{width:14px;height:14px}

.filler{flex:1 1 auto;min-height:0}
.filler[hidden]{display:none}
.oops{color:var(--warn);font-size:15px;margin:0}
.by{
  display:flex;align-items:center;justify-content:center;gap:5px;
  padding:0 var(--pad) calc(12px + env(safe-area-inset-bottom,0px));
  font-size:11px;color:var(--faint);flex:0 0 auto;
}
.by a{color:var(--muted);text-decoration:none;font-weight:600;letter-spacing:.01em}
.by a:hover{color:var(--ink)}

@media (prefers-reduced-motion:reduce){
  .sk .shot,.sk b,.think i,.tick,.turn{animation:none}
  .card,.chips button,.send{transition:none}
  #stage{scroll-behavior:auto}
}
@media (max-height:560px){#stage.empty{justify-content:flex-start}.hero{padding-top:10px}}
@media (max-width:480px){.bot{grid-template-columns:1fr}.avatar{display:none}}