:root{
  --bg:#f7f5f0;--panel:#efece4;--card:#fff;--fg:#1f1d1a;--muted:#6f6a61;--line:#dedad0;
  --accent:#8a5a2b;--accent-fg:#fff;--user:#e9e2d3;--danger:#b3261e;--ok:#2e7d4f;--code:#f1eee6;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#17171a;--panel:#1d1d21;--card:#232328;--fg:#e2e1e6;--muted:#9a99a3;--line:#34343b;
    --accent:#d9a066;--accent-fg:#1a1206;--user:#2e2a24;--danger:#f2857d;--ok:#7fd1a0;--code:#1b1b1f;
    color-scheme:dark;
  }
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--fg);font:16px/1.5 -apple-system,system-ui,"Segoe UI",Roboto,sans-serif;overscroll-behavior:none}
[hidden]{display:none!important}
h1,h2,h3{margin:0;line-height:1.25}
button,.btn{font:inherit;color:var(--fg);background:var(--card);border:1px solid var(--line);border-radius:10px;padding:8px 14px;min-height:44px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none}
button:hover,.btn:hover{border-color:var(--muted)}
button:disabled{opacity:.5;cursor:default}
button.primary,.btn.primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent);font-weight:600}
button.danger{background:var(--danger);border-color:var(--danger);color:#fff}
button.icon{padding:0;width:44px;flex:none}
svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.center{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px;text-align:center}
.center p{margin:0;color:var(--muted);max-width:28rem}

#app{height:100%;display:grid;grid-template-columns:280px minmax(0,1fr)}
#side{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:calc(env(safe-area-inset-top) + 10px) 12px 10px}
.side-head strong{font-size:18px}
#sessions{flex:1;overflow:auto;padding:4px 8px}
#sessions button{width:100%;justify-content:flex-start;text-align:left;border:1px solid transparent;background:none;border-radius:8px;padding:8px 10px;min-height:44px;display:block}
#sessions button:hover{background:var(--card)}
#sessions button[aria-current=true]{background:var(--card);border-color:var(--line)}
#sessions b{display:block;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#sessions small{display:block;color:var(--muted);font-size:12px}
#sessions .empty{color:var(--muted);font-size:14px;padding:10px}
.side-foot{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 12px calc(env(safe-area-inset-bottom) + 10px);border-top:1px solid var(--line)}
.side-foot span{flex:1 1 100%;font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-foot button{min-height:36px;padding:4px 10px;font-size:14px}

main{display:flex;flex-direction:column;min-width:0;min-height:0;height:100%}
.bar{display:flex;align-items:center;gap:8px;padding:calc(env(safe-area-inset-top) + 8px) 12px 8px;border-bottom:1px solid var(--line)}
.bar h1{flex:1;min-width:0;font-size:17px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#menu{display:none}
#autoread[aria-pressed=true]{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}

#log{flex:1;overflow:auto;padding:18px 16px 8px;scroll-behavior:smooth}
#log:focus-visible{outline-offset:-2px}
.msg{max-width:46rem;margin:0 auto 14px}
.msg.user{display:flex;justify-content:flex-end}
.msg.user .body{background:var(--user);border-radius:14px 14px 4px 14px;padding:9px 14px;max-width:85%;white-space:pre-wrap;overflow-wrap:anywhere}
.msg.assistant .body{overflow-wrap:anywhere}
.msg.assistant.speaking .body{border-left:3px solid var(--accent);padding-left:11px;margin-left:-14px}
.msg .actions{display:flex;gap:6px;margin-top:4px}
.msg .actions button{min-height:32px;padding:2px 10px;font-size:13px;color:var(--muted);border-color:transparent;background:none}
.msg .actions button:hover{color:var(--fg);border-color:var(--line)}
.msg.error .body{color:var(--danger)}
.note{color:var(--muted);font-style:italic;margin:.4em 0}
.welcome{max-width:30rem;margin:12vh auto 0;text-align:center;color:var(--muted)}
.welcome h2{color:var(--fg);margin-bottom:8px}

.body p{margin:0 0 .7em}
.body>:last-child{margin-bottom:0}
.body h1,.body h2,.body h3,.body h4{font-size:1.05em;margin:1em 0 .4em}
.body h1{font-size:1.2em}
.body ul,.body ol{margin:0 0 .7em;padding-left:1.5em}
.body li{margin:.15em 0}
.body a{color:var(--accent)}
.body code{font:.9em/1.4 ui-monospace,Consolas,monospace;background:var(--code);border-radius:4px;padding:1px 4px}
.body pre{background:var(--code);border:1px solid var(--line);border-radius:8px;padding:10px 12px;overflow:auto;margin:0 0 .7em}
.body pre code{background:none;padding:0}
.body blockquote{margin:0 0 .7em;padding-left:12px;border-left:3px solid var(--line);color:var(--muted)}
.body hr{border:none;border-top:1px solid var(--line);margin:1em 0}
.body .tablewrap{overflow:auto;margin:0 0 .7em}
.body table{border-collapse:collapse;font-size:.95em}
.body th,.body td{border:1px solid var(--line);padding:4px 10px;text-align:left;vertical-align:top}
.body th{background:var(--panel)}

.tool{margin:0 0 .6em;font-size:14px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}
.tool summary{cursor:pointer;padding:6px 10px;display:flex;align-items:center;gap:8px;list-style:none;min-height:36px}
.tool summary::-webkit-details-marker{display:none}
.tool summary b{font-weight:600;flex:none}
.tool summary span{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-family:ui-monospace,Consolas,monospace;font-size:13px}
.tool summary::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ok);flex:none}
.tool.running summary::before{background:var(--accent);animation:pulse 1s infinite}
.tool.failed summary::before{background:var(--danger)}
.tool pre{margin:0;border:none;border-top:1px solid var(--line);border-radius:0 0 8px 8px;max-height:260px;font-size:13px;white-space:pre-wrap}
.typing{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--muted);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.25}}

#composer{border-top:1px solid var(--line);padding:10px 12px calc(env(safe-area-inset-bottom) + 10px);background:var(--bg)}
#composer .row{display:flex;align-items:flex-end;gap:8px;max-width:46rem;margin:0 auto}
#input{flex:1;min-width:0;font:inherit;color:var(--fg);background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px;resize:none;max-height:40vh;min-height:44px;line-height:1.4}
#mic[aria-pressed=true]{background:var(--danger);border-color:var(--danger);color:#fff}
#rec,#stt{display:flex;align-items:center;gap:10px;max-width:46rem;margin:0 auto 8px;font-size:14px;color:var(--muted)}
#rec .dot{width:10px;height:10px;border-radius:50%;background:var(--danger);animation:pulse 1s infinite;flex:none}
#rec-meter{flex:1;height:6px;border-radius:3px;background:var(--line);overflow:hidden}
#rec-meter i{display:block;height:100%;width:0;background:var(--danger);transition:width .08s linear}
#rec button{min-height:32px;padding:2px 10px;font-size:13px}
#stt progress{flex:1;height:6px;accent-color:var(--accent)}

dialog{border:1px solid var(--line);border-radius:14px;background:var(--bg);color:var(--fg);padding:18px;width:min(28rem,calc(100vw - 32px));max-height:calc(100vh - 32px)}
dialog::backdrop{background:rgba(0,0,0,.45)}
dialog h2{font-size:18px;margin-bottom:10px}
dialog h3{font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin:16px 0 8px}
dialog p{margin:0 0 10px}
.field{display:block;margin:0 0 10px;font-size:14px;color:var(--muted)}
.field select,.field input[type=range],dialog input[type=text]{display:block;width:100%;margin-top:4px;font:inherit;color:var(--fg)}
.field select,dialog input[type=text]{padding:9px;border-radius:8px;border:1px solid var(--line);background:var(--card);min-height:44px}
.field output{float:right;color:var(--fg)}
.check{display:flex;align-items:center;gap:8px;margin:0 0 10px;min-height:44px}
.check input{width:20px;height:20px;accent-color:var(--accent)}
.hint{font-size:13px;color:var(--muted)}
.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}

#toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(env(safe-area-inset-bottom) + 90px);background:rgba(20,20,20,.94);color:#fff;padding:10px 14px;border-radius:10px;font-size:14px;z-index:9;max-width:90%;opacity:0;pointer-events:none;transition:opacity .2s;text-align:center}
#toast.on{opacity:1}

@media (max-width:760px){
  #app{grid-template-columns:minmax(0,1fr)}
  #side{position:fixed;inset:0 auto 0 0;width:min(84vw,320px);z-index:6;transform:translateX(-102%);transition:transform .18s ease}
  #app.side-open #side{transform:none}
  #scrim{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:5}
  #menu{display:inline-flex}
  #autoread span{display:none}
  #autoread{padding:0;width:44px}
  #send{padding:8px 12px}
  .msg.assistant.speaking .body{margin-left:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  #log{scroll-behavior:auto}
}