/* Reset and root styles (light reset) */
:root {
  --bg: #e7fbfb;
  --fg: #0b1e1e;
  --cyan: #00e5e5;
  --panel: rgba(2, 24, 40, 0.65);
  --border: rgba(0, 255, 255, 0.65);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

/* Base page look: cyan parchment, hacker/future cyberpunk vibe */
html, body { height: 100%; }
body {
  font-family: ui-sans-serif, -apple-system, "Segoe UI", Roboto, Inter, Arial;
  color: var(--fg);
  background: #e5fbfb;
  background-image:
    radial-gradient(circle at 20% 0, rgba(0,255,255,.18), transparent 40%),
    linear-gradient(135deg, rgba(0,0,0,.05), rgba(255,255,255,.05) 60%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* subtle "parchment" glow on cyan hue */
  text-rendering: optimizeLegibility;
}

main {
  padding: 2rem 1rem;
  display: grid;
  place-items: center;
  min-height: calc(100vh - 6rem);
}

/* Frosted glass hero frame for the image (clear hero section) */
.image-frame {
  width: 100%;
  max-width: 860px;
  border-radius: 16px;
  padding: 14px;
  background: rgba(2, 24, 40, 0.55);
  border: 1px solid rgba(0, 255, 255, 0.65);
  backdrop-filter: blur(8px) saturate(1.2);
  -webkit-backdrop-filter: blur(8px) saturate(1.2);
  box-shadow: 0 8px 26px rgba(0,0,0,0.25);
  display: flex;
  justify-content: center;
  align-items: center;
}
.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  object-fit: cover;
  filter: saturate(1.05);
}

/* Footer / product ad area with cyan accents */
footer { padding: 16px; }

.product-ad {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  margin: 0 auto;
  max-width: 860px;
  border-radius: 12px;
  background: rgba(2, 24, 40, 0.5);
  border: 1px solid rgba(0, 255, 255, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: #eaffff;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
}
.product-ad h3 {
  margin: 0;
  font-size: 1rem;
  color: #aaf0ff;
  text-shadow: 0 0 6px rgba(0,255,255,0.8);
  letter-spacing: 0.5px;
}
.product-ad a { text-decoration: none; }
.product-ad a p {
  margin: 0;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: rgba(0, 255, 255, 0.25);
  color: #001414;
  font-weight: 700;
  border: 1px solid rgba(0, 255, 255, 0.6);
  transition: transform 0.25s ease, background 0.25s ease;
  display: inline-block;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 4px 12px rgba(0,0,0,0.25);
}
.product-ad a:hover p { transform: translateY(-1px); background: rgba(0, 255, 255, 0.35); }
.product-ad a:focus-visible p {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 255, 255, 0.8);
}

/* Keyboard focus accessibility for links and buttons */
a, button { outline-color: transparent; }
a:focus-visible, button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 255, 255, 0.8);
  border-radius: 6px;
}

/* Responsive adjustments (mobile-first) */
@media (min-width: 600px) {
  main { padding: 3rem 2rem; min-height: calc(100vh - 6rem); }
  .image-frame { padding: 26px; border-radius: 20px; }
  .product-ad { font-size: 1.05rem; padding: 1rem 1.25rem; }
}

@media (min-width: 900px) {
  .image-frame { transform: translateY(-6px); }
  .product-ad { font-size: 1.1rem; }
}