/* Announcement Bar */
.announcement-bar {
  background-color: var(--surface-dark);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 0;
  font-size: 0.8125rem;
}

.announcement-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.announcement-tag {
  background-color: rgba(178, 210, 53, 0.15);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
}

.announcement-text {
  color: var(--text-muted);
}

.announcement-link {
  color: var(--primary);
  font-weight: 600;
  transition: color var(--transition-fast);
}

.announcement-link:hover {
  color: var(--text-main);
}

/* Site Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.logo-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--bg-dark);
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.logo-badge {
  font-size: 0.625rem;
  font-family: var(--font-mono);
  background-color: rgba(0, 163, 224, 0.15);
  color: var(--primary);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-toggle {
  display: none;
  color: var(--text-main);
  padding: 0.5rem;
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  inset: 0;
  background-color: var(--bg-dark);
  z-index: 100;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

.mobile-drawer.active {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.drawer-close {
  color: var(--text-muted);
  padding: 0.5rem;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
  flex: 1;
}

.drawer-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.drawer-link:hover {
  color: var(--primary);
}

.drawer-footer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* Footer Layout */
.site-footer {
  background-color: #01040f;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2.5rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 1rem;
  max-width: 320px;
  line-height: 1.6;
}

.footer-copy {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 2rem;
}

.footer-heading {
  font-size: 0.875rem;
  font-family: var(--font-mono);
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary);
}