/* ── Overrides formulario contacto (fondo oscuro) ── */
        #form-contacto .captcha-input {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #ffffff;
        }
        #form-contacto .captcha-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        #form-contacto .captcha-box {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.2);
        }
        #form-contacto .captcha-header {
            color: rgba(255, 255, 255, 0.75);
        }
        #form-contacto .captcha-question {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
            color: #ffffff;
        }
        #form-contacto .btn-reset {
            border-color: rgba(255, 255, 255, 0.35);
            color: rgba(255, 255, 255, 0.75);
        }
        #form-contacto .btn-reset:hover {
            border-color: #ffffff;
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        #form-contacto .captcha-refresh {
            border-color: rgba(255, 255, 255, 0.35);
            color: rgba(255, 255, 255, 0.75);
        }
        #form-contacto .captcha-refresh:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #ffffff;
            color: #ffffff;
        }