/* ============================================================
   全局顶部导航（页面切换器）
   工作台 / 代码审计 / 数字员工 —— 三个页面共用同一份样式，
   样式只在这里定义一次，避免各页面各写一套慢慢跑偏。
   ============================================================ */

#global-nav {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 44px;
  padding: 0 16px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid #e2ebf7;
  box-shadow: 0 1px 0 rgba(59, 130, 246, 0.05);
  position: sticky;
  top: 0;
  z-index: 40;
  font: 13px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", sans-serif;
  color: #1f2d3d;
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

#global-nav .gn-brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-right: 10px;
  padding-right: 14px;
  border-right: 1px solid #e6eef9;
  font-weight: 600;
  font-size: 13px;
  color: #1f2d3d;
  text-decoration: none;
  letter-spacing: .2px;
}

#global-nav .gn-brand svg { width: 18px; height: 18px; display: block; }

#global-nav .gn-tabs {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

#global-nav .gn-tabs::-webkit-scrollbar { display: none; }

#global-nav .gn-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 44px;
  padding: 0 13px;
  font-size: 13.5px;
  color: #6b7f95;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}

#global-nav .gn-tab:hover { color: #1f2d3d; }

#global-nav .gn-tab.on {
  color: #2563eb;
  font-weight: 500;
  border-bottom-color: #3b82f6;
}

#global-nav .gn-tab svg { width: 15px; height: 15px; }

#global-nav .gn-grow { flex: 1; }

#global-nav [hidden] { display: none !important; }

#global-nav .gn-auth {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

#global-nav .gn-auth a {
  padding: 5px 11px;
  font-size: 12.5px;
  text-decoration: none;
  border-radius: 8px;
}

#global-nav .gn-login {
  color: #2563eb;
  border: 1px solid #dbe6f5;
  background: #fff;
}

#global-nav .gn-register {
  color: #fff;
  background: #3b82f6;
  border: 1px solid #3b82f6;
}

#global-nav .gn-me {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12.5px;
  color: #384a5e;
  background: #fff;
  border: 1px solid #dbe6f5;
  border-radius: 999px;
  text-decoration: none;
}

#global-nav .gn-me svg { width: 13px; height: 13px; }

#global-nav .gn-out {
  margin-left: 4px;
  padding: 5px 11px;
  font-size: 12.5px;
  color: #6b7f95;
  background: none;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
}

#global-nav .gn-out:hover { color: #2563eb; border-color: #dbe6f5; background: #fff; }

@media (max-width: 640px) {
  #global-nav { padding: 0 10px; gap: 2px; }
  #global-nav .gn-brand span { display: none; }
  #global-nav .gn-tab { padding: 0 9px; font-size: 13px; }
  #global-nav .gn-me span { display: none; }
  #global-nav .gn-auth .gn-register { display: none; }
}