/* Global reset */
* { box-sizing: border-box; }

/* Parchment-y, hacker-themed base */
html, body { height: 100%; }
body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: #2b2b2b;
  /* yellow parchment background with subtle speckle */
  background: #f7e9c6;
  background-image:
    radial-gradient(circle at 20% 0, rgba(255,255,255,.6) 0 1px, transparent 1px),
    radial-gradient(circle at 90% 70%, rgba(0,0,0,.04) 0 1px, transparent 1px);
  background-size: 40px 40px, 48px 48px;
  background-attachment: fixed;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Frosted glass panels for a cyberpunk feel */
.glass {
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(0,0,0,.15);
}

/* Layout: mobile-first, centered hero image */
main {
  display: grid;
  place-items: center;
  padding: 4rem 1rem;
}
.image-frame {
  width: min(92vw, 760px);
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,.15);
  background: rgba(255,255,255,.18);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 18px 50px rgba(0,0,0,.25);
}
.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  filter: saturate(0.98);
}

/* Footer with glassy product ad and CTAs */
footer {
  padding: 1.75rem 1rem;
  display: grid;
  justify-items: center;
  gap: .75rem;
  background: rgba(255,255,255,.25);
  border-top: 1px solid rgba(0,0,0,.15);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.product-ad {
  width: min(92vw, 720px);
  padding: .95rem;
  border-radius: 12px;
  background: rgba(255,255,255,.28);
  border: 1px solid rgba(255,255,255,.5);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .4rem;
}
.product-ad h3 {
  font-size: .85rem;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: #333;
}
.product-ad a {
  display: inline-block;
  padding: .6rem 1rem;
  border-radius: 6px;
  background: rgba(0,0,0,.28);
  color: #fff;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,.35);
  transition: transform .2s ease, box-shadow .2s ease;
  text-shadow: 0 0 6px rgba(255,216,76,.7);
}
.product-ad a:hover,
.product-ad a:focus {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(0,0,0,.3);
  outline: none;
}
a:focus-visible {
  outline: 3px solid #ffd54a;
  outline-offset: 2px;
  border-radius: 4px;
}
.product-ad p { margin: 0; }

/* Basic focus accessibility for all focusable elements (keyboard users) */
:focus { outline: 2px solid #ffd54a; outline-offset: 2px; }

/* Responsive tweaks */
@media (min-width: 768px) {
  main { padding: 6rem 2rem; }
  footer { grid-template-columns: 1fr auto; align-items: center; }
}
@media (min-width: 1000px) {
  .image-frame { transform: translateZ(0); }
  footer { padding: 2rem 2rem; }
}