/* CSS - Hacker purple, frosted-glass, white low-poly triangles background (mobile-first) */
:root{
  --bg: #0b0a1a;
  --surface: rgba(255,255,255,.08);
  --surface-strong: rgba(255,255,255,.14);
  --text: #e9e6ff;
  --muted: #c9baff;
  --accent: #7c5cff;
  --accent-dark: #5a3df8;
  --shadow: 0 8px 28px rgba(0,0,0,.45);
  --radius: 14px;
}
*,
*::before,
*::after{ box-sizing: border-box; }
html, body { height: 100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Inter", "Segoe UI", Roboto;
  color: var(--text);
  background: var(--bg);
  /* White low-poly triangles background (CSS triangle grid) */
  background-image:
    linear-gradient(135deg, rgba(255,255,255,.08) 25%, transparent 25%),
    linear-gradient(225deg, rgba(255,255,255,.08) 25%, transparent 25%),
    linear-gradient(315deg, rgba(255,255,255,.04) 25%, transparent 25%),
    linear-gradient(45deg, rgba(255,255,255,.04) 25%, transparent 25%);
  background-size: 60px 60px;
  background-position: 0 0, 0 0, 0 0, 0 0;
  background-attachment: fixed;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a{ color:inherit; text-decoration:none; }
a:focus-visible, button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}
main{
  display:flex;
  flex-direction:column;
  align-items:center;
  padding: 1rem;
  min-height: calc(100vh - 120px);
}
.image-frame{
  width: min(92vw, 760px);
  aspect-ratio: 16/9;
  border-radius: 18px;
  overflow:hidden;
  position: relative;
  background: var(--surface);
  border: 1px solid rgba(255,255,255,.28);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px) saturate(120%);
}
.image-frame img{
  width:100%; height:100%; object-fit: cover; display:block;
  /* subtle color boost for cyberpunk vibe */
  filter: saturate(1.15) contrast(1.05);
}
.image-frame::before{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(135deg, rgba(124,92,255,.25), rgba(0,0,0,.0) 40%);
  mix-blend-mode: overlay;
  pointer-events:none;
}
footer{
  width:100%;
  margin-top: 2rem;
  padding: 1rem 0 2rem;
  text-align:center;
  color: var(--text);
}
.product-ad{
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  width: min(92vw, 760px);
  margin:0 auto 1rem;
  padding: 1rem;
  border-radius: var(--radius);
  background: rgba(10,0,20,.55);
  border: 1px solid rgba(255,255,255,.28);
  backdrop-filter: blur(6px);
}
.product-ad h3{ font-size: 1.05rem; margin-bottom:.25rem; }
.product-ad a{ display:inline-block; }
.product-ad a p{
  margin:0;
  padding:.75rem 1.25rem;
  border-radius:999px;
  background: linear-gradient(135deg, #7c5cff 0%, #5a3df8 100%);
  color:#fff;
  font-weight:700;
  box-shadow: 0 6px 14px rgba(124,92,255,.6);
  letter-spacing:.2px;
}
.product-ad a p:hover{ transform: translateY(-1px); transition: transform .15s ease; }
.product-ad a:focus-visible p{ outline: 3px solid #fff; outline-offset: 2px; }

/* Small screens: tighten vertical rhythm */
@media (max-width: 767px){
  .image-frame{ border-radius: 14px; }
  .product-ad{ padding: .75rem; }
}
@media (min-width: 768px){
  main{ padding-top: 4rem; }
  .image-frame{ width: min(60vw, 860px); border-radius: 22px; }
}