:root{
  --paper:#f4efe6; --card:#fffdf8; --ink:#2b2a33; --muted:#7a7684; --line:#e4dccd;
  --slate:#a3abb9; --teal:#5fa39a; --teal-soft:#e3f0ed; --plum:#8a6fb0; --plum-soft:#efe8f6;
  --orange:#f08a24; --coral:#e07a5f;
  --r:16px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--paper);color:var(--ink);font:16px/1.45 ui-rounded,"SF Pro Rounded","Nunito",system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;border-radius:999px;padding:.5em 1em;background:transparent}
button.primary{background:var(--ink);color:var(--paper)}
button.primary:disabled{opacity:.45;cursor:default}
button.ghost{border:2px solid var(--line);background:var(--card)}
button.ghost:hover{border-color:var(--slate)}
button.wide{width:100%}
input,select{border:2px solid var(--line);border-radius:12px;padding:.55em .8em;background:var(--card);min-width:0}
input:focus,select:focus{outline:none;border-color:var(--teal)}

#app{display:grid;grid-template-rows:auto 1fr;height:100dvh}
.top{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:2px solid var(--line);background:var(--paper)}
.brand{display:flex;align-items:center;gap:8px;font-size:1.2rem;letter-spacing:.01em}
.brand img{width:32px;height:32px}
.grow{flex:1}
#contact{max-width:40vw}
.only-narrow{display:none}

.panes{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,400px);min-height:0}
.chat,.ai{display:flex;flex-direction:column;min-height:0}
.ai{border-left:2px solid var(--line);background:#f8f4ec}

.feed{flex:1;overflow-y:auto;padding:18px 16px;display:flex;flex-direction:column;gap:6px}
.msg{max-width:min(78%,560px);padding:.55em .9em;border-radius:var(--r);background:var(--card);border:2px solid var(--line);align-self:flex-start;white-space:pre-wrap;word-wrap:break-word;cursor:pointer;position:relative}
.msg.me{align-self:flex-end;background:var(--teal-soft);border-color:#cfe4df}
.msg:hover{border-color:var(--slate)}
.msg.picked{outline:3px solid var(--orange);outline-offset:1px}
.msg .t{display:block;font-size:.72rem;color:var(--muted);margin-top:2px}
.sys{align-self:center;font-size:.82rem;color:var(--muted);padding:2px 10px;text-align:center}
.sys b{color:var(--ink);font-weight:600}
.day{align-self:center;font-size:.75rem;color:var(--muted);margin:8px 0 2px}
.empty{margin:auto;text-align:center;color:var(--muted);max-width:340px}
.empty img{width:72px;opacity:.9}

.compose{display:flex;gap:8px;padding:12px 14px;border-top:2px solid var(--line);background:var(--paper)}
.compose input{flex:1}

.tabs{display:flex;gap:4px;padding:10px 12px 0}
.tabs button{border-radius:12px 12px 0 0;padding:.45em .9em;color:var(--muted);font-weight:600}
.tabs button.on{background:var(--card);color:var(--ink);border:2px solid var(--line);border-bottom-color:var(--card)}
.tabpane{display:none;flex:1;min-height:0;overflow-y:auto;padding:12px 14px;flex-direction:column;gap:10px;background:var(--card);border-top:2px solid var(--line);margin-top:-2px}
.tabpane.on{display:flex}
.tabpane.ours{box-shadow:inset 0 4px 0 var(--teal)}
.tabpane.mine{box-shadow:inset 0 4px 0 var(--plum);background:#fcfaff}
.tabpane.words{box-shadow:inset 0 4px 0 var(--orange)}
.hint{margin:0;font-size:.84rem;color:var(--muted)}

.birdfeed{display:flex;flex-direction:column;gap:10px}
.q{align-self:flex-end;max-width:90%;background:var(--paper);border-radius:var(--r);padding:.45em .8em;font-size:.92rem}
.q .who{display:block;font-size:.72rem;color:var(--muted)}
.q blockquote{margin:.2em 0;padding-left:.6em;border-left:3px solid var(--orange);color:var(--muted);font-size:.85rem}
.a{display:flex;gap:8px;align-items:flex-start}
.a img{width:26px;height:26px;flex:none;margin-top:2px}
.a .body{background:var(--teal-soft);border-radius:4px var(--r) var(--r) var(--r);padding:.55em .85em;font-size:.94rem}
.mine .a .body{background:var(--plum-soft)}
.a .body p{margin:.25em 0}
.a .body ul{margin:.25em 0;padding-left:1.2em}
.thinking .body{color:var(--muted);font-style:italic}
.thinking .body::after{content:" ···";animation:blink 1.2s infinite}
@keyframes blink{50%{opacity:.2}}

.ask{padding:10px 12px 12px;border-top:2px solid var(--line);background:#f8f4ec}
.ask[hidden]{display:none}
.askrow{display:flex;gap:8px}
.askrow input{flex:1}
.quote{display:flex;gap:6px;align-items:center;background:var(--card);border:2px dashed var(--orange);border-radius:12px;padding:.3em .3em .3em .7em;margin-bottom:8px;font-size:.85rem}
.quote[hidden]{display:none}
.quote span{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.quote button{padding:.1em .6em;font-size:1.1rem}

.wordlist{display:flex;flex-direction:column;gap:6px}
.word{background:var(--paper);border-radius:12px;padding:.45em .8em}
.word b{font-size:1.02rem}
.word .m{display:block;font-size:.88rem}
.word .by{font-size:.72rem;color:var(--muted)}
.wordform{display:grid;grid-template-columns:1fr;gap:6px}
.suggested{display:flex;flex-direction:column;gap:6px}
.sugg{display:flex;gap:8px;align-items:center;border:2px dashed var(--line);border-radius:12px;padding:.35em .35em .35em .7em;font-size:.9rem}
.sugg span{flex:1}

dialog{border:0;border-radius:22px;background:var(--card);color:var(--ink);padding:22px;width:min(440px,92vw);box-shadow:0 20px 60px rgba(43,42,51,.25)}
dialog::backdrop{background:rgba(43,42,51,.35)}
dialog form{display:flex;flex-direction:column;gap:12px}
dialog h1,dialog h2{margin:0}
dialog label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--muted)}
dialog label input{color:var(--ink);font-size:1rem}
dialog .big{width:84px;align-self:center}
dialog h1{text-align:center}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.row input{flex:1}
.row input[hidden]{display:none}
.muted{color:var(--muted);margin:0}
.fine{font-size:.76rem;color:var(--muted);margin:0}
details summary{cursor:pointer;color:var(--muted);font-size:.85rem}
details > *:not(summary){margin-top:8px}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:.6em 1.1em;border-radius:999px;font-size:.9rem;z-index:10}
.toast[hidden]{display:none}

button.brand{background:none;padding:2px 6px 2px 2px;border-radius:12px}
button.brand:hover{background:var(--card)}
dialog .x{position:absolute;top:10px;right:12px;font-size:1.5rem;line-height:1;padding:.15em .45em;color:var(--muted)}
dialog .x:hover{color:var(--ink);background:var(--paper)}
.qr{align-self:center;width:200px;height:200px;border-radius:14px;overflow:hidden;border:2px solid var(--line);background:var(--card)}
.qr svg{display:block;width:100%;height:100%}

.splash{position:fixed;inset:0;z-index:5;background:var(--paper);overflow-y:auto}
.splash[hidden]{display:none}
.splash-in{max-width:760px;margin:0 auto;padding:48px 20px 40px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.hero{width:120px;height:120px}
.splash h1{font-size:3rem;margin:0;letter-spacing:.01em}
.tagline{font-size:1.3rem;margin:0;color:var(--plum)}
.lede{font-size:1.1rem;max-width:520px;margin:4px 0 6px}
button.big{font-size:1.1rem;padding:.75em 1.6em}
.demo{width:100%;max-width:480px;display:flex;flex-direction:column;gap:10px;margin:18px 0 6px;text-align:left}
.demo .msg{cursor:default}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;width:100%;margin-top:10px;text-align:left}
.card{background:var(--card);border:2px solid var(--line);border-radius:18px;padding:14px 16px;display:flex;flex-direction:column;gap:4px}
.card span{font-size:.92rem;color:var(--muted)}
.card.ours{box-shadow:inset 0 4px 0 var(--teal)}
.card.mine{box-shadow:inset 0 4px 0 var(--plum)}
.card.words{box-shadow:inset 0 4px 0 var(--orange)}
.center{text-align:center}
.legend{margin:0 0 6px;font-size:.9rem;color:var(--muted);background:var(--card);border:2px dashed var(--line);border-radius:999px;padding:.35em 1em}
.legend b{color:var(--ink);font-weight:600}
@media (max-width:560px){.cards{grid-template-columns:1fr}.splash h1{font-size:2.4rem}}

@media (max-width:820px){
  .only-narrow{display:inline-block}
  .panes{grid-template-columns:1fr}
  .panes[data-view=chat] .ai{display:none}
  .panes[data-view=bird] .chat{display:none}
  .ai{border-left:0}
  .brand b{display:none}
  .msg{max-width:86%}
}