/* Shared presentation layer for stack and collection pages */

:root {
  --seo-bg-1: #06121f;
  --seo-bg-2: #0b2237;
  --seo-card: rgba(10, 25, 40, 0.72);
  --seo-card-border: rgba(110, 190, 255, 0.28);
  --seo-text: #d6e4ef;
  --seo-muted: #a8c1d6;
  --seo-heading: #f3f9ff;
  --seo-accent: #68c7ff;
  --seo-accent-2: #29e2b2;
  --seo-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

body.seo-layout {
  min-height: 100vh;
  color: var(--seo-text);
  background:
    radial-gradient(900px 500px at 12% -8%, rgba(41, 226, 178, 0.12), transparent 65%),
    radial-gradient(780px 460px at 92% 8%, rgba(104, 199, 255, 0.2), transparent 60%),
    linear-gradient(165deg, var(--seo-bg-1) 0%, var(--seo-bg-2) 60%, #081a2b 100%);
}

body.seo-layout::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 85%);
}

main.seo-page,
main.wrap {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 22px 80px;
  animation: seo-fade-up 0.65s ease-out;
}

main.seo-page > h1,
main.wrap > h1 {
  margin: 0 0 26px;
  font-size: clamp(2rem, 3.6vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--seo-heading);
  text-wrap: balance;
}

main.seo-page > h1 + p,
main.wrap > h1 + p {
  margin-top: 0;
  font-size: 1.12rem;
  color: #e5f2ff;
}

main.seo-page > h2,
main.wrap > h2 {
  margin: 38px 0 14px;
  padding: 13px 16px;
  border: 1px solid var(--seo-card-border);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(29, 57, 79, 0.75), rgba(16, 38, 57, 0.75));
  color: var(--seo-heading);
  font-size: clamp(1.15rem, 1.45vw, 1.48rem);
  font-weight: 650;
  box-shadow: var(--seo-shadow);
}

main.seo-page > h3,
main.wrap > h3 {
  margin: 24px 0 8px;
  color: var(--seo-heading);
}

main.seo-page > p,
main.wrap > p,
main.seo-page > ul,
main.wrap > ul,
main.seo-page > ol,
main.wrap > ol,
main.seo-page > div,
main.wrap > div,
main.seo-page > article,
main.wrap > article {
  border: 1px solid rgba(133, 192, 235, 0.2);
  background: var(--seo-card);
  border-radius: 14px;
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.28);
  padding: 18px 18px;
}

main.seo-page > p,
main.wrap > p {
  margin: 10px 0 0;
  color: var(--seo-text);
  line-height: 1.8;
}

main.seo-page > ul,
main.wrap > ul,
main.seo-page > ol,
main.wrap > ol {
  margin: 10px 0 0;
  padding-left: 28px;
}

main.seo-page li,
main.wrap li {
  margin: 7px 0;
  color: var(--seo-text);
}

main.seo-page strong,
main.wrap strong {
  color: #f2fbff;
}

main.seo-page a,
main.wrap a {
  color: var(--seo-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.18s ease, text-shadow 0.18s ease;
}

main.seo-page a:hover,
main.wrap a:hover {
  color: var(--seo-accent-2);
  text-shadow: 0 0 16px rgba(41, 226, 178, 0.45);
}

/* Keep card-based subgrids beautiful */
.seo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-top: 10px;
}

.seo-card {
  border: 1px solid rgba(110, 190, 255, 0.26);
  background: linear-gradient(150deg, rgba(19, 44, 67, 0.9), rgba(11, 26, 42, 0.9));
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.32);
}

.seo-card h3 {
  margin: 0 0 8px;
}

.seo-card p {
  margin: 0;
  color: var(--seo-muted);
}

@keyframes seo-fade-up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Footer styling for seo-layout pages */
body.seo-layout > footer {
  position: relative;
  z-index: 1;
  margin-top: 60px;
  background: transparent;
  border-top: 1px solid rgba(110, 190, 255, 0.15);
}

@media (max-width: 840px) {
  main.seo-page,
  main.wrap {
    padding: 58px 16px 68px;
  }

  main.seo-page > h2,
  main.wrap > h2,
  main.seo-page > p,
  main.wrap > p,
  main.seo-page > ul,
  main.wrap > ul,
  main.seo-page > ol,
  main.wrap > ol,
  main.seo-page > div,
  main.wrap > div,
  main.seo-page > article,
  main.wrap > article {
    border-radius: 12px;
    padding: 14px 14px;
  }
}