/* Global reset and hacker-theme palette */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: #eafff5;
  background: #000;
  /* lime diagonal pattern */
  background-image: repeating-linear-gradient(135deg, rgba(0,255,0,.25) 0 2px, transparent 2px 16px);
  line-height: 1.4;
}

main {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
  min-height: calc(100vh - 180px);
}

.image-frame {
  width: min(92%, 1000px);
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0,255,0,.6);
  background: rgba(0,0,0,.35);
  box-shadow:
    0 8px 40px rgba(0,255,0,.4),
    inset 0 0 40px rgba(0,255,0,.25);
  backdrop-filter: blur(0.5px);
  -webkit-backdrop-filter: blur(0.5px);
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(1.05);
}

footer {
  padding: 1.5rem;
  text-align: center;
  background: rgba(0,0,0,.25);
  border-top: 1px solid rgba(0,255,0,.3);
}

.product-ad {
  display: inline-block;
  padding: 0.9rem;
  min-width: 240px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(0,255,0,.5);
  border-radius: 12px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 6px 24px rgba(0,255,0,.4);
  margin: 0.5rem auto;
}

.product-ad h3 {
  margin: 0 0 .35rem;
  font-size: 1.05rem;
  color: #9aff66;
  text-shadow: 0 0 6px rgba(154,255,102,.6);
}

.product-ad a { color: inherit; text-decoration: none; display: block; }

.product-ad a p {
  margin: 0;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid rgba(0,255,0,.5);
  background: linear-gradient(135deg, rgba(0,0,0,.25), rgba(0,0,0,.12));
  color: #eafff0;
  font-weight: 600;
  text-align: center;
  transition: transform .15s ease;
}

.product-ad a p:hover {
  transform: translateY(-1px);
}

footer p {
  margin: 0.6rem 0 0;
  color: #8aff8d;
  font-size: .92rem;
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible {
  outline: 3px solid #00ff66;
  outline-offset: 2px;
  border-radius: 6px;
}

@media (min-width: 768px) {
  .image-frame { width: min(90%, 1100px); }
  footer { padding: 2rem 0; }
}

@media (min-width: 1024px) {
  main { padding: 2rem 0; }
  footer { display: flex; justify-content: center; gap: 2rem; align-items: flex-start; padding: 2rem 0; }
  .product-ad { margin: 0; }
}