/* Reset + mobile-first base */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; padding: 0; }

:root {
  --text: #e9e6ff;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.25);
  --violet-1: #7c3aed;
  --violet-2: #8b5cf6;
  --violet-3: #6d28d9;
}

body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial;
  color: var(--text);
  /* Navy radial gradient background with violet accents (cyberpunk vibe) */
  background: radial-gradient(circle at 20% 15%, rgba(31,41,111,.95) 0%, rgba(6,10,28,.95) 40%, rgba(5,6,18,.95) 100%),
              radial-gradient(circle at 85% 0%, rgba(139,92,246,.35) 0%, rgba(6,6,20,.0) 40%),
              #050712;
  background-blend-mode: screen, screen, normal;
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
}

/* Layout sections */
main {
  display: grid;
  place-items: center;
  padding: 2rem;
}

.image-frame {
  position: relative;
  width: min(92vw, 720px);
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 14px 40px rgba(0,0,0,.45);
  display: grid;
  place-items: center;
}
.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(124,58,237,.45) 0%, transparent 40%),
              radial-gradient(circle at 70% 70%, rgba(2,6,23,.25) 0%, transparent 60%);
  mix-blend-mode: overlay;
  pointer-events: none;
}
.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

footer {
  padding: 1.5rem 1rem;
  text-align: center;
  color: #c9c2ff;
}

.product-ad {
  display: inline-block;
  padding: 0.6rem;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  margin: 0.5rem auto 0;
}
.product-ad h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
}
.product-ad a { text-decoration: none; color: inherit; }
.product-ad a p {
  display: inline-block;
  margin: 0;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, rgba(124,58,237,0.95), rgba(99,102,241,0.95));
  box-shadow: 0 6px 18px rgba(124,58,237,.6);
}
footer p {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  opacity: 0.95;
}

/* Accessibility focus styles */
a:focus-visible,
button:focus-visible {
  outline: 3px solid #7c3aed;
  outline-offset: 2px;
  border-radius: 6px;
}

/* Responsive tweaks */
@media (min-width: 768px) {
  .image-frame { width: min(64vw, 900px); }
  .product-ad { margin-top: 0.8rem; }
}