/* Reset and base */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
:root {
  --bg-olive: #4b531d;
  --bg-olive-dark: #2e3610;
  --panel: rgba(255,255,255,.08);
  --panel-border: rgba(230,240,255,.25);
  --text: #e7ecef;
  --silver: #cbd5e1;
  --accent: #7bdcff;
  --shadow: 0 6px 20px rgba(0,0,0,.25);
}
html { font-size: 16px; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg-olive);
  /* olive paper texture (soft grain) */
  background-image:
    linear-gradient(135deg, rgba(0,0,0,.05), rgba(0,0,0,0) 40%),
    repeating-linear-gradient(45deg, rgba(0,0,0,.04) 0 2px, transparent 2px 8px),
    linear-gradient(#4b531a, #2e3812 60%, #2b2e1a);
  background-attachment: fixed;
  background-size: cover;
  min-height: 100%;
}

main {
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  min-height: calc(100vh - 120px);
}

/* Frosted glass hero image frame */
.image-frame {
  position: relative;
  width: min(92vw, 860px);
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.25);
  box-shadow: var(--shadow);
  backdrop-filter: saturate(1.2) blur(0.5px);
}
.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  /* neon cyber glow around the frame */
  box-shadow: 0 0 40px 8px rgba(0, 255, 255, .25);
  pointer-events: none;
  mix-blend-mode: screen;
}
.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: crisp-edges;
}

/* Footer with a product ad (CTA) */
footer {
  text-align: center;
  padding: 1.75rem 1rem;
  color: var(--silver);
  background: rgba(0,0,0,.45);
}
footer p {
  margin: .5rem 0 0;
  font-size: .85rem;
  color: #dbe2ee;
}

/* Product ad / CTA button styling (prominent and accessible) */
.product-ad {
  display: inline-block;
  margin: 0 auto 1rem;
  padding: .75rem 1rem;
  width: min(92%, 720px);
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(230,240,255,.25);
  border-radius: 12px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.product-ad h3 {
  margin: 0 0 .25rem;
  font-size: .95rem;
  color: var(--silver);
}
.product-ad a {
  text-decoration: none;
  display: inline-block;
  padding: .65rem 1.1rem;
  border-radius: 8px;
  background: #dbe6f0;
  color: #0b0b0b;
  font-weight: 700;
  font-size: .95rem;
  border: 1px solid rgba(0,0,0,.15);
  transition: transform .15s ease, box-shadow .15s ease;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.6);
}
.product-ad a:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
}
.product-ad a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Responsive tweaks (mobile-first) */
@media (min-width: 700px) {
  main { padding: 3rem 2rem; min-height: calc(100vh - 120px); }
}
@media (min-width: 1024px) {
  main { padding: 4rem 2rem; }
  .image-frame { border-radius: 20px; }
}