/* Reset & base styles (light, mobile-first) */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0b0f14;
  --bg-soft: #0d1117;
  --fg: #e9f0f5;
  --muted: #a8b3c2;
  --surface: rgba(255, 255, 255, 0.12);
  --surface-strong: rgba(255, 255, 255, 0.22);
  --card: rgba(255, 255, 255, 0.12);
  --accent: #ff6b61;         /* coral */
  --accent-dark: #e65b50;
  --silver: #cbd6de;
  --shadow: 0 20px 40px rgba(0,0,0,.45);
  --radius: 14px;
  --focus: 3px solid rgba(255, 214, 165, 0.95);
}

html, body { height: 100%; }

body {
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial;
  color: var(--fg);
  background: linear-gradient(135deg, #0b0f14 0%, #0e1117 60%, #0b0f14 100%);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  isolation: isolate;
  /* Silver abstract blur background hint layer (subtle) */
}
body::before {
  content: "";
  position: fixed;
  inset: -25vmax;
  background:
    radial-gradient(circle at 20% 30%, rgba(200, 210, 230, 0.25), transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15), transparent 40%),
    radial-gradient(circle at 50% 70%, rgba(190, 210, 225, 0.18), transparent 40%);
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.9;
}

/* Layout containers */
main {
  display: grid;
  place-items: center;
  padding: 5rem 1rem;
  min-height: 60vh;
}

.image-frame {
  width: min(780px, 92vw);
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(0,0,0,0.08));
  border: 1px solid rgba(255,255,255,0.25);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px) saturate(1.2);
  -webkit-backdrop-filter: blur(6px) saturate(1.2);
}
.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(1.05);
}
.image-frame::before {
  content: "";
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    45deg,
    rgba(255,255,255,0.04) 0 6px,
    transparent 6px 12px
  );
  mix-blend-mode: overlay;
  pointer-events: none;
}
.image-frame::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to bottom right, rgba(255,255,255,0.0), rgba(0,0,0,0.15) 60%);
  mix-blend-mode: overlay;
  pointer-events: none;
}
.image-frame:hover {
  transform: translateY(-1px);
  transition: transform 0.25s ease;
}
.image-frame:focus-within {
  outline: var(--focus);
}

/* Footer / product card (prominent CTA) */
footer {
  padding: 2rem 1rem;
  display: grid;
  justify-items: center;
  gap: 1rem;
  background: linear-gradient(to top, rgba(0,0,0,0.4), rgba(0,0,0,0.15));
}
.product-ad {
  width: min(100%, 760px);
  padding: 1rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.22);
  backdrop-filter: saturate(1.2) blur(6px);
  -webkit-backdrop-filter: saturate(1.2) blur(6px);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem;
  color: var(--fg);
  box-shadow: var(--shadow);
}
.product-ad h3 {
  font-size: 1rem;
  letter-spacing: .04em;
  margin: 0;
}
.product-ad a {
  text-decoration: none;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .75rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #ff9f85);
  color: #fff;
  border: 0;
  transition: transform .2s ease, box-shadow .2s ease;
}
.product-ad a:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(255,107,97,0.6);
}
.product-ad a:focus-visible {
  outline: 3px solid #ffe8d9;
  outline-offset: 2px;
}
footer p {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.75rem 0 0;
}
a, button { color: inherit; }

@media (max-width: 700px) {
  .product-ad {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .product-ad a {
    width: 100%;
    justify-content: center;
  }
  .image-frame { width: 94vw; border-radius: 16px; }
  footer { padding: 1.5rem 1rem; }
}

/* Focus visibility across the page for accessibility */
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 214, 165, 0.6);
  border-radius: 6px;
}
a:focus-visible, button:focus-visible {
  outline: var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}