/* Base style */
.theme-product-details-style-01 
.theme-prod-details-container 
.theme-custom-field-container 
select {
  background: #888b8f !important; /* main background */
  color: #fff !important;        /* white text for contrast */
  border: 1px solid #888b8f !important;
  border-radius: 6px;             /* rounded corners */
  padding: 5px 10px;
  height: 42px;
  cursor: pointer;
}

/* On hover */
.theme-product-details-style-01 
.theme-prod-details-container 
.theme-custom-field-container 
select:hover {
  background: #777a7e !important; /* slightly darker shade */
  border-color: #777a7e !important;
}

/* On focus (when clicked) */
.theme-product-details-style-01 
.theme-prod-details-container 
.theme-custom-field-container 
select:focus {
  outline: none !important;
  background: #6e7175 !important; /* darker for focus */
  border-color: #6e7175 !important;
}