:root{--bg:#F6F4EE;--lado:#EFECE4;--card:#fff;--fg:#1E1D1A;--mut:#6B675E;--line:#E2DED4;--pri:#2E6B5E;--pri2:#24564B;--yo:#E9E5DA;--ok:#2E6B5E;--warn:#8A5A00;--warnbg:#FFF4DC;--err:#B42318;--code:#F1EEE6}
@media (prefers-color-scheme:dark){:root{--bg:#1C1B19;--lado:#232220;--card:#2A2926;--fg:#ECE9E2;--mut:#A39E93;--line:#3A3833;--pri:#6FC2AE;--pri2:#8BD3C1;--yo:#34322E;--warnbg:#3A2D10;--warn:#F2C266;--err:#FF9A90;--code:#2F2E2A}}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;font:16px/1.55 ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--fg);display:flex;overflow:hidden}
button,select,textarea,input{font:inherit;color:inherit}
.mut{color:var(--mut)}
.logo{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--pri);color:#fff;font-weight:800;font-size:22px}
.logo.chico{width:26px;height:26px;font-size:14px;border-radius:7px}.logo.grande{width:56px;height:56px;font-size:28px;border-radius:16px}
/* lado */
#lado{width:280px;flex:none;background:var(--lado);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:12px;padding-top:max(12px,env(safe-area-inset-top));height:100%}
.lado-cab{display:flex;align-items:center;justify-content:space-between;padding:4px 4px 12px}.marca{display:flex;gap:8px;align-items:center;font-weight:700}
.btn{background:var(--pri);color:#fff;border:0;border-radius:12px;padding:11px 14px;font-weight:600;cursor:pointer}
.btn.nueva{width:100%;margin-bottom:10px}
#lista{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px;margin:0 -4px;padding:0 4px}
.ses{display:flex;align-items:center;gap:6px;border-radius:10px;padding:9px 10px;cursor:pointer;font-size:14.5px}
.ses:hover{background:rgba(0,0,0,.05)}.ses.on{background:var(--card);box-shadow:0 1px 2px rgba(0,0,0,.06)}
.ses .t{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ses .acc{opacity:0;border:0;background:none;cursor:pointer;color:var(--mut);padding:2px 4px}
.ses:hover .acc,.ses.on .acc{opacity:1}
.grupo{font-size:12px;color:var(--mut);font-weight:600;padding:12px 10px 4px}
.salir-f{padding-top:8px;border-top:1px solid var(--line)}.link{background:none;border:0;color:var(--mut);text-decoration:underline;cursor:pointer;padding:6px}
/* principal */
main{flex:1;display:flex;flex-direction:column;min-width:0;height:100%}
.cab{display:flex;align-items:center;gap:8px;padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));border-bottom:1px solid var(--line);background:var(--bg)}
.titulo{flex:1;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#modelo{max-width:46%;border:1px solid var(--line);background:var(--card);border-radius:10px;padding:6px 8px;font-size:13.5px}
.icono{background:none;border:0;font-size:20px;cursor:pointer;padding:6px 8px;border-radius:10px;line-height:1}
.solo-movil{display:none}
#chat{flex:1;overflow-y:auto;padding:20px 16px 8px;scroll-behavior:smooth}
#chat>*{max-width:780px;margin-left:auto;margin-right:auto}
.vacio{text-align:center;margin-top:12vh}.vacio h2{margin:14px 0 6px;font-size:24px}.vacio p{max-width:420px;margin:0 auto}
.msg{margin:0 auto 18px}
.msg.yo{display:flex;justify-content:flex-end}.msg.yo .burbuja{background:var(--yo);border-radius:18px 18px 4px 18px;padding:10px 14px;max-width:85%;white-space:pre-wrap;word-wrap:break-word}
.msg.yo img{max-width:220px;border-radius:12px;display:block;margin-top:6px}
.msg.ia .cuerpo{word-wrap:break-word}
.cuerpo p{margin:0 0 10px}.cuerpo ul,.cuerpo ol{padding-left:22px;margin:0 0 10px}.cuerpo h1,.cuerpo h2,.cuerpo h3{font-size:17px;margin:14px 0 6px}
.cuerpo pre{background:var(--code);padding:12px;border-radius:10px;overflow-x:auto;font-size:13.5px}.cuerpo code{background:var(--code);padding:1px 5px;border-radius:5px;font-size:.9em}
.cuerpo pre code{background:none;padding:0}.cuerpo table{border-collapse:collapse;display:block;overflow-x:auto;margin-bottom:10px}.cuerpo td,.cuerpo th{border:1px solid var(--line);padding:5px 8px;font-size:14px}
.cuerpo a{color:var(--pri)}
.paso{font-size:13.5px;color:var(--mut);margin:4px 0 8px;border:1px solid var(--line);border-radius:10px;background:var(--card)}
.paso summary{cursor:pointer;padding:7px 10px;list-style:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.paso summary::-webkit-details-marker{display:none}
.paso pre{margin:0;padding:8px 10px;border-top:1px solid var(--line);max-height:260px;overflow:auto;font-size:12.5px;white-space:pre-wrap;word-break:break-word}
.pensando{font-size:13.5px;color:var(--mut);font-style:italic;margin:4px 0 8px;white-space:pre-wrap}
.meta{font-size:12px;color:var(--mut);margin-top:-4px}
.error-ia{color:var(--err);font-size:14px}
.escribiendo{display:flex;gap:5px;padding:8px 0}.escribiendo i{width:7px;height:7px;border-radius:50%;background:var(--mut);animation:b 1.2s infinite}
.escribiendo i:nth-child(2){animation-delay:.15s}.escribiendo i:nth-child(3){animation-delay:.3s}@keyframes b{0%,60%,100%{opacity:.25}30%{opacity:1}}
.permiso{background:var(--warnbg);color:var(--fg);border:1.5px solid var(--warn);border-radius:14px;padding:12px 14px;margin:0 auto 16px}
.permiso b{color:var(--warn)}.permiso pre{white-space:pre-wrap;word-break:break-word;font-size:12.5px;background:var(--card);padding:8px;border-radius:8px;max-height:200px;overflow:auto}
.botones{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.botones button{border:1.5px solid var(--pri);background:var(--card);color:var(--pri);border-radius:10px;padding:8px 12px;font-weight:600;cursor:pointer}
.botones button.si{background:var(--pri);color:#fff}
/* caja */
#caja{padding:8px 12px calc(10px + env(safe-area-inset-bottom));background:var(--bg)}
.fila-caja{max-width:780px;margin:0 auto;display:flex;align-items:flex-end;gap:4px;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:6px 6px 6px 4px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
#texto{flex:1;border:0;outline:0;background:none;resize:none;max-height:180px;padding:8px 4px;font-size:16px}
.adj input{display:none}.adj{display:grid;place-items:center}
.enviar{width:38px;height:38px;flex:none;border-radius:50%;border:0;background:var(--pri);color:#fff;font-size:20px;font-weight:700;cursor:pointer}
.enviar.parar{background:var(--fg)}.enviar:disabled{opacity:.35}
.mic.grabando{background:var(--err);color:#fff;animation:p 1.2s infinite}@keyframes p{50%{opacity:.6}}
#adjuntos{max-width:780px;margin:0 auto;display:flex;gap:6px;flex-wrap:wrap}#adjuntos:not(:empty){margin-bottom:6px}
.chip{display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:4px 8px;font-size:13px}
.chip img{width:34px;height:34px;object-fit:cover;border-radius:6px}.chip button{border:0;background:none;cursor:pointer;color:var(--mut)}
.nota{max-width:780px;margin:4px auto 0;font-size:12px;color:var(--mut);text-align:center;min-height:1em}
/* entrar */
.entrar-body{display:grid;place-items:center;padding:16px}.entrar{width:100%;max-width:340px;text-align:center}
.entrar h1{margin:12px 0 2px}.entrar input{width:100%;margin:18px 0 10px;padding:13px;border-radius:12px;border:1.5px solid var(--line);background:var(--card);font-size:17px}
.entrar .btn{width:100%;padding:13px;font-size:17px}.error{color:var(--err)}
@media (max-width:760px){
  #lado{position:fixed;z-index:20;left:0;top:0;bottom:0;transform:translateX(-100%);transition:transform .2s;width:84%;max-width:320px}
  body.lado-abierto #lado{transform:none}body.lado-abierto #velo{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:15}
  .solo-movil{display:inline-block}#chat{padding:14px 12px 6px}#modelo{max-width:52%}
}
.pie-lado{display:flex;justify-content:space-between;align-items:center;padding-top:8px;border-top:1px solid var(--line)}
.ajustes-btn{background:none;border:0;cursor:pointer;padding:8px 6px;border-radius:10px;font-weight:600}.ajustes-btn:hover{background:rgba(0,0,0,.05)}
dialog#ajustes{width:min(560px,calc(100vw - 24px));max-height:calc(100dvh - 40px);border:1px solid var(--line);border-radius:18px;background:var(--bg);color:var(--fg);padding:16px 18px;overflow-y:auto}
dialog#ajustes::backdrop{background:rgba(0,0,0,.4)}
.aj-cab{display:flex;justify-content:space-between;align-items:center}.aj-cab h2{margin:0;font-size:20px}
dialog h3{font-size:15px;margin:18px 0 6px}.chico{font-size:13px;margin:0 0 8px}
.saldos{display:flex;gap:10px;flex-wrap:wrap}.saldo{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:8px 12px;color:var(--fg)}.saldo b{font-size:18px}
.mod{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:8px 10px;margin-bottom:6px}
.mod .info{flex:1;min-width:0}.mod .info div{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mod .sub{font-size:12.5px;color:var(--mut)}
.mod button{border:1px solid var(--line);background:var(--bg);border-radius:9px;padding:5px 9px;cursor:pointer;font-size:13px;white-space:nowrap}
.mod button.mas{border-color:var(--pri);color:var(--pri);font-weight:600}.mod .pri{font-size:11.5px;font-weight:700;color:var(--pri);border:1px solid var(--pri);border-radius:6px;padding:1px 6px}
#buscar-modelo{width:100%;padding:11px 12px;border-radius:12px;border:1.5px solid var(--line);background:var(--card);font-size:16px;margin-bottom:8px}
.icono{display:inline-grid;place-items:center;color:var(--mut)}.icono:hover{color:var(--fg)}
.enviar{display:grid;place-items:center}.ajustes-btn{display:flex;align-items:center;gap:8px;color:var(--fg)}
.ses .acc svg{width:16px;height:16px}
.detalles{margin:0 0 10px;font-size:14px}.detalles>summary{cursor:pointer;color:var(--mut);font-size:13.5px;padding:4px 0;list-style:none}
.detalles>summary::-webkit-details-marker{display:none}.detalles>summary::before{content:'▸ '}.detalles[open]>summary::before{content:'▾ '}
.detalles[open]{border-left:2px solid var(--line);padding-left:12px}.detalles .cuerpo{color:var(--mut);font-size:14px}
a.gen{display:block;margin:8px 0}a.gen img{max-width:min(100%,520px);border-radius:14px;border:1px solid var(--line);display:block}
a.archivo{display:inline-flex;align-items:center;gap:6px;margin:6px 6px 0 0;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--fg);text-decoration:none;font-size:14px}
a.archivo svg{width:16px;height:16px}
.icono.solo-movil{display:none}
@media (max-width:760px){.icono.solo-movil{display:inline-grid}}