.contact-floating {
  position: fixed;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  z-index: 9999;
  font-family: 'Arial', sans-serif;
}

.contact-floating a {
  width: 55px;
  height: 55px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  font-size: 22px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  font-weight: 600;
}

.contact-floating a:hover {
  transform: scale(1.15);
  box-shadow: 0 6px 14px rgba(0,0,0,0.4);
}

.call { background: #25D366; }
.zalo { background: #0068FF; font-size: 16px; font-weight: bold; letter-spacing: 0.5px; }
.facebook { background: #1877F2; }
.messenger { 
  background: linear-gradient(45deg, #00C6FF, #0078FF, #833AB4);
}