/* ============================================
   HEADER - Fixed Navigation Bar
   ============================================ */
#mission-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0.88));
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-xl);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

#mission-header.active {
  opacity: 1;
  transform: translateY(0);
}

#mission-header .brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#mission-header h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.tagline {
  font-size: 11px;
  color: var(--color-text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

#mission-header .header-actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

#mission-header .header-actions .btn {
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  transition: all 0.3s ease;
}

#toggle-follow-btn {
  border-color: #00ff88;
}

#toggle-follow-btn .follow-icon {
  font-size: 16px;
  transition: transform 0.3s ease;
}

#toggle-follow-btn:hover .follow-icon {
  transform: scale(1.2);
}

/* Responsive */
@media (max-width: 1024px) {
  #mission-header {
    padding: var(--space-sm) var(--space-md);
  }

  #mission-header h1 {
    font-size: 14px;
  }

  .tagline {
    font-size: 9px;
  }
}