:root {
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-surface-alt: #f8f9fa;
  --color-text: #333333;
  --color-heading: #2c3e50;
  --color-accent: #4a90d9;
  --color-accent-hover: #357abd;
  --color-border: #e5e7eb;
  --color-focus: #ffbf47;
  --color-stage: #ff4d8d;
  --color-stage-hover: #e63d7a;
  --max-content: 800px;
  --radius: 8px;
  --transition: 0.2s ease;
  --hero-aspect: 5 / 3;
  --hero-max-height: 500px;
  --nav-height: 56px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1a1d23;
    --color-surface: #23272f;
    --color-surface-alt: #2a2f38;
    --color-text: #e6e8eb;
    --color-heading: #f3f4f6;
    --color-border: #3a3f4a;
    --color-accent: #5ba3e6;
    --color-accent-hover: #7ab8ed;
    /* NOTE: --color-focus and --color-stage* intentionally inherit light values:
       yellow focus ring has >=3:1 contrast on both light and dark surfaces,
       and the stage-pink CTA is already tuned for both backgrounds. */
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
    scroll-padding-top: 0;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

h1, h2, h3, h4 {
  color: var(--color-heading);
  line-height: 1.25;
  margin: 0 0 0.5rem;
}

p { margin: 0 0 1rem; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--color-accent-hover); text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: -40px;
  left: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-heading);
  color: #fff;
  z-index: 1000;
  transition: top var(--transition);
}
.skip-link:focus {
  top: 0.5rem;
  color: #fff;
  text-decoration: none;
}

.hero {
  position: relative;
  width: 100%;
  max-height: var(--hero-max-height);
  aspect-ratio: var(--hero-aspect);
  overflow: hidden;
  background: #000;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #fff;
  text-align: center;
  padding: 2rem 1.5rem;
  background: linear-gradient(to bottom, rgba(0,0,0,0.35), rgba(0,0,0,0.7));
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  opacity: 0.85;
}

.hero-overlay h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin: 0 0 0.75rem;
  text-shadow: 2px 2px 6px rgba(0,0,0,0.6);
}

.tagline {
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  margin: 0 0 1.5rem;
  opacity: 0.95;
  max-width: 36ch;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.cta-button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  border: 2px solid transparent;
  transition: background var(--transition), transform var(--transition);
}
.cta-button:hover,
.cta-button:focus-visible {
  background: var(--color-accent-hover);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}
.cta-secondary {
  background: transparent;
  border-color: #fff;
}
.cta-secondary:hover,
.cta-secondary:focus-visible {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-focus);
}

.page-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  min-height: var(--nav-height);
}
.page-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0.5rem 1rem;
  max-width: var(--max-content);
  margin-inline: auto;
  justify-content: center;
}
.page-nav a {
  display: block;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.9rem;
}
.page-nav a:hover,
.page-nav a:focus-visible {
  background: var(--color-surface-alt);
  text-decoration: none;
}

.intro-card {
  max-width: var(--max-content);
  margin: 0 auto 2rem;
  padding: 1.75rem 1.75rem 1.5rem;
  /* Fallback for browsers without color-mix() support */
  background: var(--color-surface);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--color-stage) 12%, var(--color-surface)),
    var(--color-surface));
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-stage);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

@media (prefers-color-scheme: dark) {
  .intro-card {
    box-shadow: 0 1px 3px rgba(0,0,0,0.4);
  }
}

.intro-heading {
  font-size: 1.5rem;
  margin: 0 0 0.6rem;
  color: var(--color-heading);
  letter-spacing: -0.01em;
}

.intro-text {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  max-width: 60ch;
}

.cta-themed {
  background: var(--color-stage);
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 2px solid transparent;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.cta-themed:hover,
.cta-themed:focus-visible {
  background: var(--color-stage-hover);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}
.cta-themed:focus-visible {
  outline: 3px solid #b8860b; /* darker yellow for >=3:1 contrast on pink bg */
  outline-offset: 2px;
  box-shadow: 0 0 0 5px rgba(184, 134, 11, 0.25);
}

.cta-themed-icon {
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

main {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  background: var(--color-surface);
}

section { margin-bottom: 2.5rem; }
section:last-child { margin-bottom: 0; }

section h2 {
  font-size: 1.6rem;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
}

section[id] {
  scroll-margin-top: calc(var(--nav-height) + 0.5rem);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.feature {
  background: var(--color-surface-alt);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}
.feature h3 {
  font-size: 1.05rem;
  margin: 0 0 0.4rem;
}
.feature p { margin: 0; font-size: 0.95rem; }

.location-list {
  margin: 0;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.location-row {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 1rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--color-border);
}
.location-row:last-child { border-bottom: none; }
.location-row dt {
  font-weight: 600;
  color: var(--color-heading);
}
.location-row dd { margin: 0; }
.location-row .slurl {
  word-break: keep-all;
  overflow-wrap: anywhere;
  display: inline-block;
  max-width: 100%;
}

.link-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}
.link-list li { padding: 0.4rem 0; }

footer {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--color-heading);
  color: #fff;
  margin-top: 2rem;
}
footer p { margin: 0; font-size: 0.9rem; }
footer a { color: #fff; }
footer a:hover { color: var(--color-focus); }

footer .footer-button-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 0.6rem;
}
footer .footer-button-row a {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 4px;
  font-size: 0.8rem;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}
footer .footer-button-row a:hover {
  border-color: var(--color-focus);
  color: var(--color-focus);
}

@media (max-width: 600px) {
  .hero-overlay { padding: 1.5rem 1rem; }
  .page-nav ul { gap: 0; padding: 0.4rem 0.75rem; }
  .location-row { grid-template-columns: 1fr; gap: 0.15rem; padding: 0.6rem 0.85rem; }
  .location-row dt { font-size: 0.85rem; }
  main { padding: 1.25rem 1rem; }
  .intro-card { padding: 1.25rem 1.25rem 1.1rem; margin-bottom: 1.5rem; }
  .intro-heading { font-size: 1.3rem; }
  .cta-themed { padding: 0.65rem 1.1rem; font-size: 0.95rem; }
}

@media (prefers-reduced-motion: no-preference) {
  .skip-link { transition: top 0.15s ease-out; }
}

.network-intro {
  margin: 0 0 1.25rem;
  color: var(--color-text);
}
.network-intro a { color: var(--color-accent); }

.glide-track {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface-alt);
  padding: 0.75rem 0;
}

/* Fade edges using pseudo-elements (better support than mask-image) */
.glide-track::before,
.glide-track::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 6rem;
  pointer-events: none;
  z-index: 1;
}
.glide-track::before {
  left: 0;
  background: linear-gradient(90deg, var(--color-surface-alt), transparent);
}
.glide-track::after {
  right: 0;
  background: linear-gradient(270deg, var(--color-surface-alt), transparent);
}

.glide-rail {
  display: flex;
  gap: 0.75rem;
  width: max-content;
  animation: glide 20s linear infinite;
  will-change: transform;
}

.glide-track:hover .glide-rail { animation-play-state: paused; }

.glide-card {
  display: inline-flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 220px;
  padding: 0.85rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  text-decoration: none;
  transition: transform var(--transition), border-color var(--transition);
}
.glide-card:hover,
.glide-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  outline: none;
}
.glide-mark {
  font-size: 1.4rem;
  line-height: 1;
}
.glide-name {
  font-weight: 600;
  color: var(--color-heading);
}
.glide-desc {
  font-size: 0.85rem;
  color: var(--color-text);
  opacity: 0.85;
}

.glide-card-neohiro { border-left: 4px solid #4ade80; }
.glide-card-fpm     { border-left: 4px solid #38bdf8; }
.glide-card-trans   { border-left: 4px solid #a78bfa; }
.glide-card-links   { border-left: 4px solid #fbbf24; }

@keyframes glide {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: no-preference) {
  .glide-rail { will-change: transform; }
}

@media (prefers-reduced-motion: reduce) {
  .glide-track {
    -webkit-mask-image: none;
            mask-image: none;
    overflow-x: auto;
  }
  .glide-rail {
    animation: none;
    flex-wrap: wrap;
    width: auto;
  }
}
/* svg-embed cross-repo truth */
.svg-embed {
  margin: 1rem 0;
  text-align: center;
}
.svg-embed img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border, #30363d);
  border-radius: 6px;
  display: block;
  margin: 0 auto;
}
.svg-embed figcaption {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted, #6e7681);
}


/* ── Live data section (Second Life destination + counters) ─────────────────── */
.osi-live-data { display:flex; flex-direction:column; gap:1.25rem; }
.osi-live-stats { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:0.75rem; }
.osi-live-stat { display:flex; flex-direction:column; gap:0.15rem; padding:0.85rem 1rem; background:var(--color-surface-alt); border:1px solid var(--color-border); border-left:4px solid var(--color-stage); border-radius:var(--radius); }
.osi-live-stat-label { font-size:0.75rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--color-text); opacity:0.7; }
.osi-live-stat-value { font-size:1.2rem; font-weight:700; color:var(--color-heading); font-variant-numeric:tabular-nums; }
.osi-live-stat-value--ok { color:#16a34a; }
.osi-live-stat-value--warn { color:#b45309; }
.osi-live-stat-foot { font-size:0.7rem; color:var(--color-text); opacity:0.55; font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; }
.osi-live-frame-wrap { position:relative; width:100%; min-height:480px; border:1px solid var(--color-border); border-radius:var(--radius); background:var(--color-surface-alt); overflow:hidden; }
.osi-live-frame { display:block; width:100%; height:480px; border:0; }
.osi-live-card { padding:1.5rem; border:1px dashed var(--color-border); border-radius:var(--radius); background:var(--color-surface); display:flex; flex-direction:column; gap:0.75rem; }
.osi-live-status { margin:0; color:var(--color-text); font-size:0.95rem; }
.osi-live-meta { margin:0; font-size:0.85rem; color:var(--color-text); opacity:0.8; }
.osi-live-manual { margin:0; font-size:0.85rem; text-align:right; }
@media (max-width:600px) { .osi-live-frame,.osi-live-frame-wrap { height:360px; min-height:360px; } }
/* Screen-reader only utility */
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }