/* Burbuja de chat de la IA (partials/_pia.html). */
.pia{position:fixed;right:16px;bottom:16px;z-index:60;font-family:var(--font)}
.pia-open{display:flex;align-items:center;gap:.5rem;border:0;border-radius:999px;padding:.8rem 1.1rem;cursor:pointer;
  background:var(--brand);color:var(--brand-ink);font-weight:700;box-shadow:var(--shadow-lg);font-size:1rem}
.pia-open:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.pia-dot{width:.6rem;height:.6rem;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(255,255,255,.6)}
.pia-panel{position:absolute;right:0;bottom:0;width:min(380px,calc(100vw - 32px));height:min(560px,calc(100vh - 32px));
  display:flex;flex-direction:column;background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;
  border:1px solid var(--line)}
.pia-panel[hidden]{display:none}
.pia-head{display:flex;justify-content:space-between;align-items:center;padding:.8rem 1rem;background:var(--brand);color:var(--brand-ink)}
.pia-head small{display:block;opacity:.85;font-size:.8rem}
.pia-close{background:none;border:0;color:inherit;font-size:1.6rem;line-height:1;cursor:pointer;padding:.2rem .4rem}
.pia-log{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.5rem;background:var(--bg)}
.pia-msg{max-width:85%;padding:.6rem .8rem;border-radius:14px;white-space:pre-wrap;word-wrap:break-word;line-height:1.4;font-size:.95rem}
.pia-msg.ia{background:var(--card);border:1px solid var(--line);align-self:flex-start;border-bottom-left-radius:4px}
.pia-msg.persona{background:var(--brand-soft);align-self:flex-end;border-bottom-right-radius:4px}
.pia-msg a{color:var(--brand-text);word-break:break-all}
.pia-opts{display:flex;flex-wrap:wrap;gap:.4rem;align-self:flex-start}
.pia-opts button{border:1px solid var(--brand);background:var(--card);color:var(--brand-text);border-radius:999px;padding:.35rem .8rem;cursor:pointer;font-size:.9rem}
.pia-opts button:hover{background:var(--brand-softer)}
.pia-typing{align-self:flex-start;color:var(--muted);font-size:.85rem}
.pia-form{display:flex;gap:.5rem;padding:.6rem;border-top:1px solid var(--line);background:var(--card)}
.pia-form input{flex:1;min-width:0;border:1px solid var(--line);border-radius:999px;padding:.6rem .9rem;font-size:1rem}
.pia-legal{margin:0;padding:.3rem .8rem .6rem;font-size:.75rem;color:var(--muted);background:var(--card)}
@media (max-width:480px){.pia{right:12px;bottom:12px}.pia-open span:last-child{font-size:.95rem}
  .pia-panel{position:fixed;inset:0;width:100%;height:100%;border-radius:0}}
@media print{.pia{display:none}}
.pia .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.pia-clip{border:1px solid var(--line);background:var(--card);border-radius:50%;width:2.6rem;height:2.6rem;flex:none;cursor:pointer;font-size:1.1rem}
.pia-clip:hover{background:var(--brand-softer)}