.accordion-button {
  background-color: black; /* default background */
  color: white; /* text always white */
}
.accordion-button:not(.collapsed) {
  background-color: #dc3545; /* background when expanded */
  color: white; /* keep text white */
}
.accordion-button::after {
  filter: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-chevron-down' viewBox='0 0 16 16'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.card-hover:hover {
  background-color: #dc3545; /* Bootstrap red */
  color: #fff;
  transition: 0.5s;
}
.card-hover:hover .card-title,
.card-hover:hover .card-text {
  color: #fff;
}
/* for 5000 clients over image */
.image-overlay-container {
  position: relative;
  display: inline-block;
  width: 100%;
}
.image-overlay-container img {
  width: 100%;
  height: auto;
  display: block;
}
/* index page overlay */
.overlay-box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  text-align: center;
}
.overlay-box h2 {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 0.25rem;
  color: #000;
}
.overlay-box p {
  margin: 0;
  font-size: 1.1rem;
  color: #333;
}