.page-header-panel {
  background: url(../../images/products/tube.jpg) center center no-repeat;
  background-size: cover;
  position: relative;
}

.page-header-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  /* darker overlay */
  z-index: 1;
}

.page-header-panel>* {
  position: relative;
  z-index: 2;
}

.page-header-panel h1 {
  font-size: 3em;
  /* ~56px */
  font-weight: 700;
  text-transform: uppercase;
}

.custom-heading {
  font-size: 1.4rem;
  /* ~22.4px */
}

.list-group-item {
  font-size: 1.05rem;
  border-radius: 0.375rem;
  margin-bottom: 0.5rem;
}

.list-group-item:hover {
  background-color: #e9fbe9;
  box-shadow: 0 0 5px rgba(25, 135, 84, 0.2);
}


.product-icon-box {
  width: 75px;
  height: 75px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 5px solid white;
  margin-bottom: 1.5rem;
  /* mb-4 equivalent */
}

/* Increase font size of accordion header buttons */
.accordion-button {
  font-size: 1.5rem;
  /* Adjust as needed */
  font-weight: 600;
  text-transform: uppercase;
}

/* Increase font size inside accordion body content */
.accordion-body {
  font-size: 1.1rem;
  line-height: 1.6;
}

/* Optional: Increase font size for titles inside the panel body */
.accordion-body h4 {
  font-size: 1.3rem;
  font-weight: bold;
}

/* Optional: Slightly increase paragraph font */
.accordion-body p {
  font-size: 1.2rem;
}

.text-muted-list {
  font-size: 1.3rem;
}

/* Extra small devices (portrait phones, less than 576px) */
@media (max-width: 575.98px) {
  .page-header-panel h1 {
    font-size: 1.3rem;
  }

  .accordion-button {
    font-size: 1.1rem;
  }

  .accordion-body {
    font-size: 1rem;
  }

  .accordion-body p {
    font-size: 1.05rem;
  }

  .custom-heading {
    font-size: 1.1rem;
  }

  .list-group-item {
    font-size: 1rem;
  }
}

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
  .page-header-panel h1 {
    font-size: 1.7rem;
  }

  .accordion-button {
    font-size: 1.2rem;
  }

  .accordion-body {
    font-size: 1.05rem;
  }

  .custom-heading {
    font-size: 1.2rem;
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
  .page-header-panel h1 {
    font-size: 2.2rem;
  }

  .accordion-button {
    font-size: 1.3rem;
  }

  .accordion-body {
    font-size: 1.08rem;
  }

  .custom-heading {
    font-size: 1.3rem;
  }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
  .page-header-panel h1 {
    font-size: 3em;
  }

  .accordion-button {
    font-size: 1.5rem;
  }

  .accordion-body {
    font-size: 1.1rem;
  }

  .custom-heading {
    font-size: 1.4rem;
  }
}