#chatbot-icon {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  z-index: 9999;
  cursor: pointer;
  transition: transform 0.2s ease;
  border: 3px solid var(--color-primario); /* borde sólido */
  background-image: none;                  /* quitamos degradé */
}
#chatbot-icon:hover {
  transform: scale(1.05);
  border-color: transparent;
  background-image:
    linear-gradient(#fff, #fff),
    linear-gradient(to right, var(--color-primario), var(--color-secundario));
  background-origin: border-box;
  background-clip: content-box, border-box;
	box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}
#chatbot-icon img {
  width: 60%;
  height: auto;
  filter: brightness(0) saturate(100%) invert(20%) sepia(90%) saturate(600%) hue-rotate(180deg);
}

/* responsive */
@media (max-width: 768px) {
  #chatbot-icon {
    width: 70px;
    height: 70px;
    bottom: 15px;
    right: 15px;
    border-width: 2px;
  }
}

#sitefooter {
  background: #f3f3f3; /* gris claro de fondo */
  width: 100%;
  padding: 50px 20px;
}

#sitefooter h3 { 
    line-height: 0.8em;
}

#sitefooter h3 { 
    text-transform: uppercase;
}

#sitefooter #anios18 {
    max-width: 110px;
    margin-bottom: 20px;;
}

#sitefooter #logomassalin {
    max-width: 100%;
    margin-top: -20px;
}

#sitefooter .container {
  max-width: 1080px;
  margin: 0 auto;
}

/* 4 columnas */
#sitefooter .columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 40px;
}

#sitefooter .col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: #333;
}

#sitefooter h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

#sitefooter a {
  color: #000;
  text-decoration: none;
}

#sitefooter a:hover {
  text-decoration: underline;
}

/* fila de logos */
#sitefooter .fila {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

#sitefooter .fila img {
    margin: 10px;
  height: 35px;
  width: auto;
  object-fit: contain;
  transition: opacity 0.3s;
}

#sitefooter .fila img:hover {
  opacity: 0.8;
}

/* responsive */
@media (max-width: 768px) {
  #sitefooter .columns {
    grid-template-columns: 1fr;
    text-align: center;
  }

  #sitefooter .col {
    align-items: center;
  }
}