/* Reset + base styles (light, accessible, mobile-first) */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; padding: 0; margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  color: #e6fffb;
  background: linear-gradient(135deg, #2f2f2f 0%, #1a1a1a 60%, #0f0f0f 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout container (mobile-first) */
main {
  width: 100%;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

/* Frosted glass image frame (hero) */
.image-frame {
  width: min(92vw, 760px);
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(0, 255, 230, 0.45);
  box-shadow: 0 20px 40px rgba(0,0,0,0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Footer area with a prominent teal CTA (accessible focus) */
footer {
  width: 100%;
  padding: 1.5rem 1rem;
  display: grid;
  gap: 1rem;
  justify-items: center;
  color: #eafff7;
  background: transparent;
}
.product-ad {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 0.6rem;
  border-radius: 999px;
  background: rgba(0, 255, 230, 0.22);
  border: 1px solid rgba(0, 255, 230, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.product-ad h3 {
  font-size: 0.95rem;
  margin: 0;
  color: #d6fff5;
  text-shadow: 0 0 8px rgba(0,255,230,0.8);
}
.product-ad a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  background: rgba(0, 255, 230, 0.42);
  color: #032b2b;
  border: 1px solid rgba(0, 235, 235, 0.8);
  font-weight: 700;
  box-shadow: 0 0 12px rgba(0, 235, 235, 0.6);
}
.product-ad a:hover { transform: translateY(-1px); }
.product-ad a:focus {
  outline: 3px solid rgba(0, 255, 230, 0.9);
  outline-offset: 2px;
}
.product-ad a:focus-visible {
  outline: 3px solid rgba(0, 255, 230, 0.9);
  outline-offset: 2px;
}
footer > p {
  margin: 0.25rem 0 0;
  color: #bfeeea;
  font-size: 0.95rem;
  text-align: center;
}

/* Responsive tweaks (tablet/desktop) */
@media (min-width: 768px) {
  main { padding: 3rem 1rem; }
  footer { grid-template-columns: 1fr auto; align-items: center; justify-items: start; gap: 2rem; }
  .image-frame { border-radius: 18px; }
  .product-ad { padding: 0.7rem 1rem; }
  .product-ad h3 { font-size: 1.05rem; }
  footer > p { text-align: left; }
}