.product-nav {
  padding: 1rem 0;
  background: #2c3e50;
}

.product-nav .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.product-nav a {
  color: #fff;
  font-family: "Montserrat", sans-serif;
  font-weight: 700;
  text-decoration: none;
}

.product-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.product-nav-links a:hover,
.product-nav-links a:focus {
  color: #1abc9c;
}

.product-breadcrumb {
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.product-breadcrumb a {
  color: #117964;
}

.product-hero {
  padding: 2.5rem 0 4rem;
}

.product-hero .row,
.product-section .row {
  margin-right: 0;
  margin-left: 0;
}

.product-hero h1 {
  font-family: "Montserrat", sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
}

.product-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.product-gallery img {
  width: 100%;
  height: auto;
  border-radius: 0.75rem;
  background: #f8f9fa;
}

.product-price {
  margin: 1.25rem 0 0.25rem;
  font: 700 2rem "Montserrat", sans-serif;
}

.product-stock {
  color: #126c38;
  font-weight: 700;
}

.checkout-note {
  margin-top: 1rem;
  padding: 1rem;
  border-left: 0.25rem solid #1abc9c;
  background: #f1faf8;
}

.secret-key-note {
  margin: 1.5rem 0;
  padding: 1rem;
  border-left: 0.25rem solid #1abc9c;
  background: #fff;
}

.secret-key-note h3 {
  margin-bottom: 0.5rem;
  font: 700 1.1rem "Montserrat", sans-serif;
}

.secret-key-note p:last-child {
  margin-bottom: 0;
}

.app-links {
  padding-left: 1.25rem;
}

.app-links li + li {
  margin-top: 0.5rem;
}

.product-section {
  padding: 4rem 0;
}

.product-section h2 {
  margin-bottom: 1.5rem;
  font-family: "Montserrat", sans-serif;
}

.product-specs {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(9rem, 38%) minmax(0, 1fr);
  column-gap: 2rem;
}

.product-specs dt,
.product-specs dd {
  width: auto;
  min-width: 0;
  margin: 0;
  padding: 0.9rem 0;
  border-bottom: 1px solid #dee2e6;
  align-self: stretch;
}

.product-specs dt {
  font-weight: 700;
}

.product-footer {
  padding: 2rem 0;
  background: #1a252f;
  color: #fff;
}

.product-footer a {
  color: #8ddece;
}

@media (max-width: 767.98px) {
  .product-gallery {
    grid-template-columns: 1fr;
  }

  .product-specs {
    grid-template-columns: minmax(7.5rem, 40%) minmax(0, 1fr);
    column-gap: 1rem;
  }
}