/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html, body { padding: 0; margin: 0; min-height: 100%; }
:root {
  --bg: #0b0f14;
  --card: rgba(255,255,255,0.08);
  --card-border: rgba(255,255,255,0.25);
  --text: #e7fbff;
  --cyan: #00e5ff;
  --mag: #ff00ff;
}
body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  background-image: 
    repeating-linear-gradient(135deg, rgba(0,255,255,0.15) 0 2px, transparent 2px 6px);
  background-size: 100% 100%;
  display: flex;
  flex-direction: column;
}

/* Layout */
main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4vw 2vw;
  flex: 1 1 auto;
}
.image-frame {
  width: min(680px, 92%);
  padding: 12px;
  border-radius: 20px;
  background: rgba(0,0,0,0.15);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 14px 40px rgba(0,0,0,.5);
  position: relative;
}
.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 20px;
  padding: 2px;
  background: linear-gradient(135deg, rgba(0,255,255,0.0), rgba(255,0,255,0.15));
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.5;
}
.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(255,255,255,.08);
}

/* Footer / Ad with frosted glass look */
footer {
  margin-top: auto;
  padding: 14px 0 20px;
  width: 100%;
  background: linear-gradient(135deg, rgba(0,0,0,.25), rgba(0,0,0,.15));
  border-top: 1px solid rgba(255,255,255,.15);
}
.product-ad {
  width: min(720px, 92%);
  margin: 0 auto;
  padding: 14px 16px;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(255, 0, 255, 0.08); /* magenta tint */
  border: 1px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-shadow: 0 0 6px rgba(255,0,255,.6);
}
.product-ad h3 {
  margin: 0;
  font-size: 1.05rem;
  color: #d0f6ff;
  text-shadow: 0 0 8px rgba(0,255,255,.6);
}
.product-ad p {
  margin: 0;
  color: #e9f8ff;
  font-size: 1rem;
}
.product-ad a {
  align-self: flex-start;
  display: inline-block;
  padding: 12px 18px;
  border-radius: 999px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,.6);
  background: linear-gradient(135deg, #ff2bdc 0%, #9a00ff 60%);
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
  transition: transform .15s ease, filter .15s ease;
}
.product-ad a:hover { transform: translateY(-1px); filter: brightness(1.05); }
.product-ad a:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }

/* Accessibility & link styling */
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Focus visibility for keyboard users on clickable items */
:focus { outline: none; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }

/* Responsive tweaks (mobile-first base) */
@media (min-width: 600px) {
  main { padding: 6vw 3vw; }
  .product-ad { padding: 16px; }
}
@media (min-width: 980px) {
  .image-frame { padding: 16px; }
  .image-frame img { border-radius: 16px; }
  .product-ad { flex-direction: row; align-items: center; justify-content: space-between; padding: 16px 20px; }
  .product-ad h3 { font-size: 1.15rem; }
  .product-ad p { font-size: 1.02rem; }
}