/* CSS for Cyberpunk Landing - blue circuit board, navy, frosted glass, mobile-first */
/* Light reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; padding: 0; margin: 0; }

/* Theme vars */
:root{
  --bg: #0a1222;
  --bg2: #0b1a34;
  --card: rgba(14,22,54,0.72);
  --card-edge: rgba(120,190,255,0.28);
  --text: #eaf5ff;
  --muted: #a7c0e6;
  --accent: #4db3ff;
  --focus: rgba(123,223,255,0.8);
  --ring: 0 0 0 3px rgba(123,223,255,0.6);
  --radius: 14px;
}

/* Global base */
body {
  min-height: 100dvh;
  color: var(--text);
  background-color: var(--bg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  line-height: 1.5;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Blue circuit-board like background (layered gradients) */
  background-image:
    radial-gradient(circle at 20% 20%, rgba(0,180,255,0.15), transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(0,130,255,0.12), transparent 40%),
    repeating-linear-gradient(0deg, rgba(0,180,255,0.22) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, rgba(0,180,255,0.22) 0 1px, transparent 1px 40px),
    linear-gradient(#0a0f22, #0a0f22);
  background-blend-mode: overlay;
  overflow-x: hidden;
}

/* Layout container (mobile-first) */
main {
  width: min(92vw, 1000px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

/* Frosted glass hero card containing the image */
.image-frame {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 1rem;
  border-radius: 18px;
  background: rgba(7,12,40,0.72);
  border: 1px solid rgba(120,190,255,0.28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 14px 40px rgba(0,0,0,0.45);
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-frame img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
  /* subtle neon glow around the image for cyberpunk vibe */
  filter: saturate(1.05);
  box-shadow: 0 0 14px rgba(77,179,255,0.35);
}

/* Footer area with a frosted ad card and copyright text */
footer {
  width: 100%;
  text-align: center;
  color: var(--muted);
  padding: 1rem 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.product-ad {
  display: inline-block;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(8,18,40,0.78);
  border: 1px solid rgba(120,190,255,0.28);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.product-ad h3 {
  font-size: 0.95rem;
  margin: 0 0 6px;
  color: #eaf6ff;
}

.product-ad a {
  text-decoration: none;
  display: inline-block;
  padding: 10px 14px;
  border-radius: 8px;
  background: linear-gradient(135deg, #0b4b8a, #1b6bd8);
  color: #eaffff;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.25);
  transition: transform 0.2s ease, background 0.2s ease;
  text-shadow: 0 0 6px rgba(0, 170, 255, 0.6);
}
.product-ad a:hover { transform: translateY(-1px); }
.product-ad a:focus-visible { outline: none; box-shadow: var(--ring); }

/* Text links outside the ad (if any) inherit accessible color */
a { color: #eaf6ff; text-decoration: none; }

/* Focus styles for accessibility on interactive elements */
:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 8px;
}

/* Responsive tweaks */
@media (min-width: 600px) {
  main { gap: 1.75rem; }
  .image-frame { padding: 1.25rem; border-radius: 20px; }
  .product-ad h3 { font-size: 1rem; }
}
@media (min-width: 1024px) {
  body { padding: 3rem; }
  .image-frame { padding: 1.5rem; border-radius: 22px; }
  footer { padding: 1.25rem 0 2rem; }
}