.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--hud-nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.35s var(--hud-ease), border-color 0.35s;
}
.site-header.scrolled {
  background: rgba(10, 10, 12, 0.88);
  backdrop-filter: blur(16px) saturate(1.3);
  border-bottom-color: var(--hud-panel-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand img { width: 36px; height: 36px; }
.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.1;
  letter-spacing: 0.04em;
}
.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  color: var(--hud-muted-2);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav { display: flex; gap: 2px; align-items: center; }
.nav a {
  color: var(--hud-muted);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--hud-radius);
  transition: all 0.25s var(--hud-ease);
}
.nav a:hover { color: var(--hud-text); background: rgba(255,255,255,0.04); text-decoration: none; }
.nav a.active {
  color: #fff;
  background: var(--hud-primary-soft);
  box-shadow: inset 0 0 0 1px var(--hud-line-hot);
}

.nav-cta {
  margin-left: 6px;
  padding: 9px 16px !important;
  background: var(--hud-primary) !important;
  color: #fff !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 20px var(--hud-primary-glow);
}
.nav-cta:hover { background: #ff4444 !important; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--hud-radius);
  border: 1px solid var(--hud-panel-border);
  background: var(--hud-panel);
  color: var(--hud-text);
  font-size: 18px;
  cursor: pointer;
}

.maint-banner {
  display: none;
  position: fixed;
  top: var(--hud-nav-h);
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(230, 57, 57, 0.12);
  border-bottom: 1px solid var(--hud-line-hot);
  padding: 10px 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #ffb4b4;
  backdrop-filter: blur(8px);
}
.maint-banner.show { display: block; }

.site-footer {
  border-top: 1px solid var(--hud-panel-border);
  padding: 48px 0 32px;
  margin-top: 40px;
  background: rgba(0,0,0,0.35);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 36px;
}
.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--hud-muted-2);
  margin-bottom: 14px;
}
.footer-grid a {
  display: block;
  color: var(--hud-muted);
  font-size: 14px;
  margin-bottom: 8px;
  transition: color 0.2s;
}
.footer-grid a:hover { color: #fff; }
.footer-copy {
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--hud-muted-2);
}
.footer-status {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--hud-muted-2);
  letter-spacing: 0.06em;
}
.footer-status .ok { color: var(--hud-success); }
.footer-status .warn { color: var(--hud-warn); }

@media (max-width: 960px) {
  .nav {
    display: none;
    position: fixed;
    top: var(--hud-nav-h);
    left: 16px;
    right: 16px;
    flex-direction: column;
    padding: 14px;
    background: rgba(10, 10, 12, 0.96);
    border: 1px solid var(--hud-panel-border);
    border-radius: var(--hud-radius);
    backdrop-filter: blur(20px);
  }
  .nav.open { display: flex; }
  .nav-cta { margin-left: 0; width: 100%; text-align: center; }
  .nav-toggle { display: grid; place-items: center; }
  .footer-grid { grid-template-columns: 1fr; }
}