:root{
  --bg:#0d1117; --side:#0f141b; --panel:#161b22; --panel2:#1c232c; --bd:#2a313c;
  --txt:#e6edf3; --mut:#8b949e; --ac:#58a6ff; --ac2:#1f6feb; --ok:#3fb950; --pay:#d2a8ff;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:system-ui,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--txt);font-size:14px}
.app{display:grid;grid-template-columns:300px 1fr;height:100vh}
code{background:var(--panel2);padding:1px 5px;border-radius:4px;color:#79c0ff;font-size:11.5px;font-family:ui-monospace,'SF Mono',monospace}
.muted{color:var(--mut)}

/* ---------- Sidebar ---------- */
.side{background:var(--side);border-right:1px solid var(--bd);padding:18px 16px;display:flex;flex-direction:column;gap:18px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:11px}
.brand .logo{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--ac),var(--ac2));display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:18px}
.brand b{font-size:14px;display:block}
.brand span{font-size:11px;color:var(--mut)}
.block{display:flex;flex-direction:column;gap:8px}
.lbl{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--mut)}
.userpick select{width:100%;background:var(--panel);border:1px solid var(--bd);color:var(--txt);border-radius:8px;padding:9px 10px;font-size:13px;cursor:pointer}
.profile{display:flex;gap:6px;flex-wrap:wrap}
.chip{font-size:11px;padding:3px 9px;border-radius:20px;border:1px solid var(--bd);background:var(--panel);color:var(--mut)}
.chip b{color:var(--txt);font-weight:600}
.agents{display:flex;gap:6px;flex-wrap:wrap}
.agents .ag{font-size:11px;padding:3px 9px;border-radius:20px;border:1px solid #20402e;background:#10231a;color:#7ee2a8}
.spacer{flex:1}
.secnote{font-size:11px;line-height:1.55;color:var(--mut);background:var(--panel);border:1px solid var(--bd);border-left:3px solid var(--ac);border-radius:8px;padding:10px 12px}

/* ---------- Main / chat ---------- */
.main{display:flex;flex-direction:column;min-width:0}
.top{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--bd);background:var(--panel)}
.top b{font-size:14px}.top span{display:block;font-size:11.5px}
.ghost{background:transparent;border:1px solid var(--bd);color:var(--mut);border-radius:7px;padding:6px 12px;font-size:12px;cursor:pointer}
.ghost:hover{color:var(--txt);border-color:var(--ac)}

.chat{flex:1;overflow-y:auto;padding:22px 20px;display:flex;flex-direction:column;gap:14px}
.row{display:flex;gap:10px;max-width:760px}
.row.u{align-self:flex-end;flex-direction:row-reverse}
.av{width:30px;height:30px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.row.a .av{background:#10231a;border:1px solid #20402e;color:#7ee2a8}
.row.u .av{background:#1f2a3a;border:1px solid var(--bd);color:var(--ac)}
.bubble{padding:11px 14px;border-radius:12px;line-height:1.55;font-size:13.5px;white-space:pre-wrap;word-wrap:break-word}
.row.a .bubble{background:var(--panel);border:1px solid var(--bd);border-top-left-radius:3px}
.row.u .bubble{background:var(--ac2);color:#fff;border-top-right-radius:3px}
.row.err .bubble{background:#2a1416;border:1px solid #5e2a2a;color:#ff9a92}
.meta{font-size:10.5px;color:var(--mut);margin-top:5px}
.meta .badge{background:var(--panel2);border:1px solid var(--bd);border-radius:20px;padding:1px 8px;color:var(--pay)}

.empty{margin:auto;text-align:center;color:var(--mut);max-width:420px}
.empty .big{font-size:40px;margin-bottom:8px}
.empty h3{margin:0 0 6px;color:var(--txt);font-size:16px}
.empty p{margin:0;font-size:13px;line-height:1.6}

/* typing */
.typing{display:flex;gap:4px;align-items:center;padding:4px 2px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--mut);animation:b 1.1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

/* composer */
.composer{display:flex;gap:10px;padding:14px 20px;border-top:1px solid var(--bd);background:var(--panel);align-items:flex-end}
.composer textarea{flex:1;background:var(--bg);border:1px solid var(--bd);color:var(--txt);border-radius:10px;padding:11px 13px;font-size:13.5px;font-family:inherit;resize:none;max-height:140px;line-height:1.5}
.composer textarea:focus{outline:none;border-color:var(--ac)}
.composer button{width:44px;height:44px;border:0;border-radius:10px;background:var(--ac2);color:#fff;font-size:17px;cursor:pointer;flex:none}
.composer button:disabled{opacity:.5;cursor:not-allowed}
.composer button:hover:not(:disabled){background:var(--ac)}

@media(max-width:720px){.app{grid-template-columns:1fr}.side{display:none}}

/* ---------- Markdown renderizado na resposta do assistente ---------- */
.row.a{max-width:900px}                         /* mais espaço p/ tabelas */
.bubble.md{white-space:normal}                  /* desliga o pre-wrap p/ o HTML fluir */
.bubble.md > :first-child{margin-top:0}
.bubble.md > :last-child{margin-bottom:0}
.bubble.md h1,.bubble.md h2,.bubble.md h3,.bubble.md h4{margin:14px 0 8px;line-height:1.3;color:var(--txt)}
.bubble.md h1{font-size:18px}
.bubble.md h2{font-size:16px;border-bottom:1px solid var(--bd);padding-bottom:5px}
.bubble.md h3{font-size:14.5px}
.bubble.md h4{font-size:12.5px;color:var(--mut)}
.bubble.md p{margin:8px 0}
.bubble.md ul,.bubble.md ol{margin:8px 0;padding-left:20px}
.bubble.md li{margin:3px 0}
.bubble.md strong{color:#fff;font-weight:700}
.bubble.md a{color:var(--ac)}
.bubble.md hr{border:0;border-top:1px solid var(--bd);margin:12px 0}
.bubble.md blockquote{margin:10px 0;padding:6px 12px;border-left:3px solid var(--ac);background:var(--panel2);border-radius:0 6px 6px 0;color:var(--mut)}
.bubble.md blockquote p{margin:0}
.bubble.md pre{background:var(--bg);border:1px solid var(--bd);border-radius:8px;padding:10px 12px;overflow-x:auto;margin:10px 0}
.bubble.md pre code{background:none;padding:0;color:var(--txt)}
/* tabelas */
.bubble.md table{border-collapse:collapse;width:100%;margin:10px 0;font-size:12.5px;display:block;overflow-x:auto}
.bubble.md th,.bubble.md td{border:1px solid var(--bd);padding:7px 10px;text-align:left;white-space:nowrap}
.bubble.md thead th{background:var(--panel2);color:var(--txt);font-weight:600}
.bubble.md tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.bubble.md tbody tr:hover{background:rgba(88,166,255,.06)}