/* Minimal reset and a single, responsive stylesheet for a cyberpunk landing page */

:root{
  --bg: #0a0a15;
  --fg: #e8f7ff;
  --turq: #3ff0e6;
  --turq-dark: #0bd6c3;
  --violet: #7a00ff;
  --glass: rgba(255,255,255,.08);
  --glass-stroke: rgba(255,255,255,.25);
}

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

html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color: var(--fg);
  background: var(--bg);
  /* Violet striped background with turquoise accents for a hacker vibe */
  background-image:
    linear-gradient(135deg, rgba(255,0,170,.08) 0 25%, transparent 25% 50%),
    linear-gradient(225deg, rgba(0,255,223,.08) 0 25%, transparent 25% 50%),
    repeating-linear-gradient(-45deg,
      rgba(120,0,200,.18) 0 8px,
      rgba(0,0,0,0) 8px 16px);
  background-size: cover;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

header h1 {
  font-size: 1.75rem;
  line-height: 1.15;
  margin: 0 0 .75rem;
  color: #eaf8ff;
  text-shadow: 0 0 8px rgba(0, 255, 235, 0.8);
  letter-spacing: .4px;
  font-weight: 700;
}

main { padding: 0 1rem; }

.image-frame {
  width: 92%;
  margin: 1rem auto 1.25rem;
  padding: .75rem;
  border-radius: 16px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(0,0,0,.25);
}

.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.25);
}

footer { padding: 1.25rem; text-align: center; }

.product-ad {
  display: inline-block;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 8px 20px rgba(0,0,0,.25);
  margin-bottom: .75rem;
}

.product-ad h3 {
  margin: 0 0 .4rem;
  font-size: 1rem;
  color: #bffcff;
  text-shadow: 0 0 6px rgba(0,255,235,.9);
}

.product-ad a { text-decoration: none; }
.product-ad a p {
  margin: 0;
  display: inline-block;
  padding: .6rem 1rem;
  border-radius: 999px;
  font-weight: 700;
  color: #041b1a;
  background: linear-gradient(135deg, #5ff0d0, #1bd9c9);
  border: 1px solid rgba(0,0,0,.15);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.6), 0 6px 14px rgba(0,0,0,.25);
}
.product-ad a p:hover { transform: translateY(-1px); transition: transform .15s ease; }

.product-ad a:focus-visible {
  outline: 3px solid rgba(0,255,255,.8);
  outline-offset: 2px;
}

p { margin-top: .5rem; color: #cfefff; font-size: .95rem; }

a { color: #8af5ff; text-decoration: none; }

a:hover { text-decoration: underline; }

/* Responsive, mobile-first adjustments */
@media (min-width: 640px) {
  header h1 { font-size: 2.25rem; }
  .image-frame { width: 78%; }
  p { font-size: 1rem; }
}

@media (min-width: 900px) {
  header { padding-top: 3rem; }
  header h1 { font-size: 3rem; }
  .image-frame { width: 60%; }
  .product-ad { font-size: 1.05rem; }
}