/* Reset and base styles */
*,
*::before,
*::after { box-sizing: border-box; }
html, body { height: 100%; }
html { font-family: ui-sans-serif, system-ui, -apple-system; }
body {
  margin: 0;
  color: #fff;
  background: #2a0d0f;
  /* maroon grid paper background */
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 24px 24px;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.35;
}

/* Layout */
main { display: grid; place-items: center; padding: 2rem 1rem; }
footer { padding: 1.25rem; display: grid; justify-items: center; }

/* Hero image frame (frosted glass, cyberpunk vibe) */
.image-frame {
  position: relative;
  width: min(92vw, 720px);
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.30);
  background: rgba(255,255,255,.08);
  box-shadow: 0 8px 40px rgba(0,0,0,.6), inset 0 0 40px rgba(255,255,255,.08);
  transform: translateZ(0);
}
.image-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.image-frame:before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.18);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: inherit;
  pointer-events: none;
}
.image-frame:hover { transform: translateY(-1px); transition: transform .25s ease; }

/* Frosted glass treatment for content overlays (subtle cyber glow) */
.product-ad {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 12px;
  padding: 1rem;
  text-align: center;
  width: min(92vw, 640px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.38), 0 6px 24px rgba(0,0,0,.25);
}
.product-ad h3 {
  font-size: 1.05rem;
  margin: 0 0 .25rem;
  color: #fff;
  text-shadow: 0 0 8px rgba(180,255,255,.8);
}
.product-ad a { text-decoration: none; display: inline-block; }
.product-ad p {
  margin: 0;
  padding: .7rem 1.1rem;
  border-radius: 8px;
  background: #ffffff;
  color: #0a0a0a;
  font-weight: 700;
  letter-spacing: .3px;
}
.product-ad a:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }

/* Focus styles for accessibility */
a:focus-visible, button:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }

/* Footer text */
footer p { text-align: center; margin: 0.75rem 0 0; font-size: 0.85rem; color: rgba(255,255,255,.85); }

/* Responsive, mobile-first tweaks */
@media (min-width: 700px) {
  main { padding: 3rem 2rem; }
  .product-ad { width: min(60rem, 60vw); }
}
@media (min-width: 1024px) {
  main { padding: 4rem 2rem; }
}