/* Shared by every public page; keep navigation independent of page themes. */
html { scrollbar-gutter: stable; }

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-sizing: border-box;
  height: calc(70px + env(safe-area-inset-top, 0px));
  padding: env(safe-area-inset-top, 0px) 60px 0;
  border-bottom: 1px solid #1e293b;
  background: rgba(3, 5, 7, .95);
  backdrop-filter: blur(20px);
  font: 400 16px/1.55 'Inter', sans-serif;
}

.site-nav-logo {
  flex: 0 0 auto;
  color: #fff;
  font: 900 1.3rem/1.55 'Orbitron', monospace;
  letter-spacing: .15em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav-logo em { color: #a855f7; font-style: normal; }

.site-nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  margin-left: auto;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: #475569 transparent;
}

.site-nav-link,
.site-nav-download {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-height: 38px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 2px;
  color: #64748b;
  background: transparent;
  font: 700 .72rem/1.55 'Orbitron', monospace;
  letter-spacing: .12em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color .2s, border-color .2s, background .2s;
}

.site-nav-link:hover,
.site-nav-link[aria-current="page"] {
  color: #fff;
  border-color: #263147;
  background: rgba(255, 255, 255, .03);
}

.site-nav .site-nav-download {
  padding: 9px 20px;
  color: #000;
  background: #fff;
  font-size: .78rem;
  letter-spacing: .1em;
}

.site-nav-download:hover { opacity: .85; }
.site-nav a:focus-visible { outline: 2px solid #a855f7; outline-offset: -2px; }

@media (max-width: 1350px) {
  .site-nav { gap: 20px; padding-inline: 24px; }
  .site-nav-actions { gap: 8px; }
  .site-nav-link { padding-inline: 8px; font-size: .66rem; }
  .site-nav .site-nav-download { padding-inline: 16px; font-size: .72rem; }
}

@media (max-width: 640px) {
  .site-nav {
    height: calc(64px + env(safe-area-inset-top, 0px));
    gap: 12px;
    padding-left: max(16px, env(safe-area-inset-left, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
  }
  .site-nav-logo { font-size: 1.05rem; letter-spacing: .12em; }
  .site-nav-actions { gap: 8px; }
  .site-nav-link { min-height: 44px; padding: 10px 8px; font-size: .62rem; letter-spacing: .08em; }
  .site-nav .site-nav-download { min-height: 44px; padding: 10px 18px; font-size: .72rem; }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav a { transition: none; }
}