/* Reset and base styles */
*,
*::before,
*::after { box-sizing: border-box; }
html, body { height: 100%; }
:root {
  --bg: #0b1020;
  --indigo: #5b6bd8;
  --indigo-dark: #2e3176;
  --glass: rgba(15, 22, 50, 0.65);
  --text: #eaf0ff;
  --cta: #6c79ff;
}
html, body { margin: 0; }
body {
  font-family: ui-sans-serif, system-ui, -apple-system;
  color: var(--text);
  min-height: 100dvh;
  background-color: var(--bg);
  /* navy crosshatch background (subtle) */
  background-image:
    linear-gradient(135deg, rgba(0,0,0,.25) 25%, transparent 25%) -10px 0/ 20px 20px,
    linear-gradient(-135deg, rgba(0,0,0,.25) 25%, transparent 25%) 0px 0/ 20px 20px,
    linear-gradient(#0b1020, #060812);
  background-repeat: repeat;
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
main {
  display: grid;
  place-items: center;
  padding: 6vmin 4vmin;
  flex: 1 1 auto;
}
.image-frame {
  width: min(92vw, 860px);
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(110,130,255,.55);
  background: rgba(12, 20, 48, 0.55);
  backdrop-filter: blur(6px) saturate(1.2);
  -webkit-backdrop-filter: blur(6px) saturate(1.2);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  position: relative;
}
.image-frame img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: saturate(1.05);
}
footer {
  padding: 2rem 4vw;
  text-align: center;
  color: var(--text);
  background: linear-gradient(to top, rgba(3,6,20,.65), rgba(3,6,20,.35) 60%, rgba(3,6,20,.0) 100%);
  border-top: 1px solid rgba(110,130,255,.35);
}
.product-ad {
  display: inline-block;
  padding: .7rem 1rem;
  border-radius: 14px;
  background: rgba(12,22,52,.6);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  border: 1px solid rgba(110,130,255,.45);
  text-align: left;
}
.product-ad h3 {
  font-size: 1.05rem;
  color: #e9f0ff;
  text-shadow: 0 0 8px rgba(120,170,255,.6);
  margin: 0 0 .25rem;
}
.product-ad a { color: inherit; text-decoration: none; }
.product-ad a p {
  display: inline-block;
  padding: .45rem .8rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--cta) 0%, #5a66ee 100%);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 6px 14px rgba(90,120,255,.6);
  transition: transform .2s ease;
}
.product-ad a:hover p { transform: translateY(-1px); }
.product-ad a:focus-visible {
  outline: 3px solid #7bd9ff;
  outline-offset: 2px;
  border-radius: 999px;
}
footer p { margin: 0.75rem 0 0; font-size: .95rem; opacity: .9; }

@media (max-width: 700px) {
  .image-frame { width: 94vw; }
  footer { padding: 1.5rem 4vw; }
  .product-ad h3 { font-size: 1rem; }
  .product-ad a p { padding: .5rem .8rem; font-size: .92rem; }
}