/* formulario de contacto de la sección 10 (tarjeta clara sobre fondo oscuro) */
.formu{position:relative;border-radius:calc(var(--r) + 8px);padding:clamp(20px,3vw,34px);background:var(--papel);color:var(--tinta);box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 0 1px rgba(181,242,61,.25);text-align:left;min-width:0}
.formu h3{font-size:clamp(1.5rem,3vw,2.1rem);line-height:1.05;margin-bottom:6px}
.formu__sub{color:rgba(11,20,16,.72);margin-bottom:16px}
.formu__fila{display:grid;grid-template-columns:minmax(0,1fr);gap:0 14px}
.formu__campo{display:grid;gap:6px;margin-bottom:14px;min-width:0}
.formu label{font-weight:700;font-size:.95rem;color:var(--tinta)}
.formu label span{font-weight:400;color:rgba(11,20,16,.6)}
.formu input,.formu select,.formu textarea{width:100%;font:inherit;font-size:1rem;color:var(--tinta);background:#fff;border:2px solid rgba(11,20,16,.16);border-radius:14px;padding:.75em .9em;transition:border-color .2s,box-shadow .2s}
.formu textarea{min-height:120px;resize:vertical}
.formu input:focus,.formu select:focus,.formu textarea:focus{outline:none;border-color:var(--verde);box-shadow:0 0 0 4px rgba(30,149,29,.2)}
.formu__error{color:#b3261e;font-size:.88rem;min-height:0}
.formu__error:empty{display:none}
.formu__trampa{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.formu__falla{color:#b3261e;font-size:.95rem;margin:0 0 10px}
.formu__falla:empty{display:none}
.formu__falla a{color:var(--verde-osc);font-weight:700;text-decoration:underline}
.formu__btn{width:100%;justify-content:center;font-size:1.05rem}
.formu__btn[disabled]{opacity:.7;cursor:progress}
.formu__nota{margin-top:12px;font-size:.85rem;color:rgba(11,20,16,.65);text-align:center}
.formu__nota a{text-decoration:underline;text-underline-offset:3px}
.formu__ok{display:grid;gap:10px;justify-items:center;text-align:center;padding:clamp(18px,4vw,40px) 0}
.formu__ok[hidden]{display:none}
.formu__tilde{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:var(--verde);color:#fff}
.formu__tilde svg{width:34px;height:34px}
@media (min-width:480px){.formu__fila{grid-template-columns:repeat(2,minmax(0,1fr))}}