/* Reset and base styles */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --indigo: #0b1020;
  --indigo-2: #141a38;
  --gold: #d4af37;
  --cyan: #00f5ff;
  --white: #eaf7ff;
  --glass: rgba(18, 24, 58, 0.65);
}

html, body { height: 100%; }

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI";
  color: #eaf7ff;
  background-color: var(--indigo);
  /* Gold polka dot background
    .dark indigo base with gold dots */
  background-image: radial-gradient(circle at 1px 1px, var(--gold) 1px, transparent 1px);
  background-size: 20px 20px;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout: mobile-first, hero-centered main */
main {
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  min-height: calc(100vh - 140px);
}

/* Frosted glass card for the image frame (hacker/cyberpunk vibe) */
.image-frame {
  width: min(92vw, 860px);
  border-radius: 18px;
  overflow: hidden;
  background: rgba(13, 15, 40, 0.6);
  border: 1px solid rgba(100, 240, 255, 0.6);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px) saturate(180%);
  -webkit-backdrop-filter: blur(6px) saturate(180%);
  /* subtle cyan glow border for cyberpunk feel */
  outline: 1px solid rgba(0, 240, 255, 0.25);
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: auto;
}

/* Footer with frosted glass section and a prominent CTA area */
footer {
  padding: 1.5rem 1rem;
  display: grid;
  justify-items: center;
  width: 100%;
  margin-top: 1.25rem;
  background: linear-gradient(to top, rgba(11,16,32,0.8), rgba(11,16,32,0.4));
  border-top: 1px solid rgba(100, 200, 255, 0.25);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.product-ad {
  display: grid;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  background: rgba(13, 15, 40, 0.55);
  border: 1px solid rgba(110, 210, 255, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  max-width: 90vw;
  text-align: center;
  box-shadow: 0 12px 40px rgba(0,0,0,0.28);
}

.product-ad h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 .25rem;
  color: #fff;
  letter-spacing: .2px;
}

.product-ad a {
  text-decoration: none;
  display: inline-block;
  padding: .55rem .95rem;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(0, 210, 255, 0.78), rgba(0, 0, 0, 0.28));
  color: #eaffff;
  border: 1px solid rgba(120, 230, 255, 0.9);
  transition: transform .2s ease, box-shadow .2s ease;
  box-shadow: 0 6px 14px rgba(0, 240, 255, 0.4);
}

.product-ad a:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0, 240, 255, 0.6);
}

.product-ad a:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

p {
  color: #dbeaff;
  font-size: 0.95rem;
  text-align: center;
  margin-top: 0.6rem;
}

footer > p {
  color: #dbeaff;
  margin-top: 0.4rem;
}

/* Focus styles for accessibility on interactive elements */
a, button, input, [tabindex]:focus {
  outline: none;
}
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Responsive tweaks */
@media (min-width: 768px) {
  main { padding: 3rem 2rem; min-height: 85vh; }
  .image-frame { width: min(60vw, 900px); }
  .product-ad { padding: 1rem 1.25rem; }
  footer { padding: 2rem 1rem; }
}