/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: #f6f58c;
  background-color: #0a1e2f;
  /* blue grid paper background */
  background-image:
    linear-gradient(to right, rgba(90,170,255,0.35) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(90,170,255,0.35) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0, 0 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout & hero (mobile-first) */
main {
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}
.image-frame {
  width: 100%;
  max-width: 760px;
  border-radius: 14px;
  overflow: hidden;
  position: relative;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(6px) saturate(1.2);
  -webkit-backdrop-filter: blur(6px) saturate(1.2);
  box-shadow: 0 20px 60px rgba(0,0,0,.45);
}
.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: crisp-edges;
}

/* Frosted glass footer area with a hacker vibe */
footer {
  padding: 1.75rem 1rem;
  text-align: center;
  color: rgba(230, 230, 190, 0.95);
}
.product-ad {
  display: inline-block;
  padding: .6rem;
  border-radius: 12px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(3px);
}
.product-ad h3 {
  font-size: .95rem;
  margin: 0 0 .4rem;
  color: #ffd84d;
  letter-spacing: .3px;
}
.product-ad a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 10px;
  text-decoration: none;
  background: linear-gradient(135deg, #ffd84f 0%, #ffce00 100%);
  color: #0b0b0b;
  font-weight: 800;
  border: 1px solid rgba(0,0,0,.25);
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
}
.product-ad a:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}
.product-ad a > p {
  margin: 0;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
}
footer p {
  margin: 0.75rem 0 0;
  font-size: .9rem;
  color: rgba(230,230,180,.95);
}

/* Focus for keyboard users on all links (accessibility) */
a:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Responsive tweaks */
@media (min-width: 768px) {
  main { padding: 3rem 2rem; }
  .image-frame { max-width: 860px; }
  .product-ad { padding: .8rem 1rem; }
}
@media (min-width: 1024px) {
  body { font-size: 16px; }
  .image-frame { border-radius: 18px; }
}