/* ── ScrollToSmooth v4 — Shared Demo Styles ── */

:root {
  --c-bg:      #0d1117;
  --c-surface: #161b22;
  --c-border:  rgba(255, 255, 255, 0.08);
  --c-accent:  #70B7FD;
  --c-text:    #e6edf3;
  --c-muted:   rgba(230, 237, 243, 0.5);
  --nav-h:     52px;
  --mono:      'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}

/* ── Nav ─────────────────────────────────────────────────────── */

.sts-nav {
  position: fixed;
  inset: 0 0 auto;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1.25rem;
  background: rgba(13, 17, 23, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border);
  z-index: 500;
}

.sts-nav-logo {
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--c-text);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.sts-nav-logo em {
  font-style: normal;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--c-accent);
  background: rgba(112, 183, 253, 0.12);
  padding: 1px 5px;
  border-radius: 4px;
}

.sts-nav-sep {
  width: 1px;
  height: 18px;
  background: var(--c-border);
  flex-shrink: 0;
}

.sts-nav-links {
  list-style: none;
  display: flex;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1;
}

.sts-nav-links::-webkit-scrollbar { display: none; }

.sts-nav-links a {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--c-muted);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}

.sts-nav-links a:hover {
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.06);
}

.sts-nav-links a.sts-active {
  color: var(--c-accent);
  background: rgba(112, 183, 253, 0.08);
}

/* ── GitHub corner ───────────────────────────────────────────── */

.github-corner {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 600;
  border: 0;
}

.github-corner svg { display: block; }

.github-corner:hover .octo-arm {
  animation: octocat-wave 560ms ease-in-out;
}

@keyframes octocat-wave {
  0%, 100% { transform: rotate(0); }
  20%,  60% { transform: rotate(-25deg); }
  40%,  80% { transform: rotate(10deg); }
}

@media (max-width: 500px) {
  .github-corner:hover .octo-arm { animation: none; }
  .github-corner       .octo-arm { animation: octocat-wave 560ms ease-in-out; }
}