*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

:root {
  --bg: #0a0e1a;
  --text: #e8e5f0;
  --muted: #d6d0e0;
  --indigo-1: #1e1b4b;
  --indigo-2: #2a1e63;
  --indigo-3: #3b2a93;
  --maroon: #8b1d2a;
  --glass: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 28px rgba(0,0,0,.35);
  --focus: #7af6d4;
}

body {
  margin: 0;
  padding: 0;
  color: var(--text);
  background-color: var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial;
  /* Indigo low-poly triangle backdrop */
  background-image:
    linear-gradient(135deg, rgba(99,102,241,.25) 25%, transparent 25%),
    linear-gradient(315deg, rgba(99,36,235,.25) 25%, transparent 25%),
    linear-gradient(45deg, rgba(56,189,248,.15) 25%, transparent 25%);
  background-size: 70px 70px, 90px 90px, 60px 60px;
  background-position: 0 0, 0 0, 0 0;
  isolation: isolate;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 20% -10%, rgba(139,0,0,.15), transparent 40%),
              radial-gradient(circle at 80% 0%, rgba(99,0,0,.15), transparent 40%);
  mix-blend-mode: overlay;
  z-index: 0;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 72vh;
  padding: 6vmin 4vw 4rem;
  width: 100%;
  position: relative;
  z-index: 1;
}

.image-frame {
  width: min(900px, 92%);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border-radius: 22px;
  background: rgba(8, 6, 14, 0.60);
  border: 1px solid rgba(180, 170, 190, 0.35);
  box-shadow:
    0 0 0 1px rgba(120, 0, 40, 0.25),
    0 15px 40px rgba(0, 0, 0, 0.5);
  backdrop-filter: saturate(120%) blur(6px);
  -webkit-backdrop-filter: saturate(120%) blur(6px);
  position: relative;
  overflow: hidden;
  /* Subtle neon glow */
}
.image-frame::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 24px;
  background: linear-gradient(45deg, rgba(174, 0, 255, 0.25), rgba(255, 0, 128, 0.25));
  filter: blur(8px);
  z-index: 0;
  pointer-events: none;
  mix-blend-mode: screen;
}
.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 14px;
  position: relative;
  z-index: 1;
  box-shadow: 0 8px 24px rgba(0,0,0,.45);
  image-rendering: -webkit-optimize-contrast;
}

footer {
  width: 100%;
  text-align: center;
  padding: 2.25rem 1rem 3rem;
  color: #e9e0e0;
  background: linear-gradient(to top, rgba(7,0,0,.9), rgba(7,0,0,.35) 60%, transparent);
  position: relative;
  z-index: 1;
}

.product-ad {
  display: inline-block;
  padding: .5rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(123, 0, 28, .92), rgba(80, 0, 20, .92));
  border: 1px solid rgba(255, 255, 255, .25);
  box-shadow: inset 0 0 12px rgba(255,255,255,.08), 0 8px 20px rgba(0,0,0,.35);
  margin-bottom: 0.75rem;
}
.product-ad h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: .2px;
  display: inline-block;
  padding-right: .5rem;
}
.product-ad a {
  text-decoration: none;
  color: inherit;
}
.product-ad a > p {
  display: inline-block;
  margin: 0;
  padding: .45rem .9rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,.35);
}
.product-ad a:hover > p {
  background: rgba(255,255,255,.22);
}
.product-ad a:focus-visible > p,
.product-ad > a:focus-visible > p {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

footer p {
  margin: 0.25rem 0 0;
  font-size: .92rem;
  color: var(--muted);
}

/* Accessible focus for all links/buttons */
a:focus-visible,
button:focus-visible,
:focus {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Responsive tweaks (mobile-first) */
@media (max-width: 768px) {
  main { padding: 6vmin 4vw 2rem; }
  .image-frame { width: 100%; aspect-ratio: 16/10; }
  footer { padding: 1.75rem 1rem 2.25rem; }
  .product-ad h3 { font-size: .9rem; }
}

@media (min-width: 1024px) {
  main { min-height: 80vh; padding: 8vmin 6vw 4rem; }
  .image-frame { transform: translateY(-6px); }
}