/* ===========================================
   熊猫工坊 - 全局导航栏样式
   统一所有页面的顶部导航
   =========================================== */

:root {
  --nav-height: 40px;
}

/* 全局导航栏 - 固定在视口顶部 */
.global-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: #0f172a;
  border-bottom: 1px solid #1e293b;
  display: flex;
  align-items: center;
  padding: 0 16px;
  z-index: 9999;
  font-size: 13px;
  user-select: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.global-nav .nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #e6edf3;
  font-weight: 600;
  font-size: 13px;
  margin-right: 24px;
  white-space: nowrap;
}

.global-nav .nav-brand img, 
.global-nav .nav-brand svg {
  width: 20px;
  height: 20px;
  border-radius: 4px;
}

.global-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}

.global-nav .nav-links::-webkit-scrollbar {
  display: none;
}

.global-nav .nav-links a {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  height: 32px;
  border-radius: 6px;
  color: #8b949e;
  text-decoration: none;
  font-size: 13px;
  font-weight: 400;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.global-nav .nav-links a:hover {
  background: #1e293b;
  color: #e6edf3;
}

.global-nav .nav-links a.active {
  background: #1e293b;
  color: #58a6ff;
  font-weight: 500;
}

.global-nav .nav-links a .nav-icon {
  font-size: 15px;
  line-height: 1;
}

.global-nav .nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  color: #8b949e;
  font-size: 12px;
}

/* React SPA 容器 - 为固定导航留出顶部空间 */
#root {
  margin-top: var(--nav-height) !important;
  min-height: calc(100vh - var(--nav-height));
}

/* 通用页面容器 */
.page-shell {
  padding-top: var(--nav-height);
  min-height: 100vh;
  background: var(--color-bg-page, #0f172a);
  color: var(--color-text-primary, #e6edf3);
}

/* 导航栏分隔线 */
.nav-divider {
  width: 1px;
  height: 20px;
  background: #30363d;
  margin: 0 4px;
  flex-shrink: 0;
}

/* 页面加载状态 */
.page-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-height));
  background: #0f172a;
  color: #8b949e;
  font-size: 14px;
  gap: 12px;
}

.page-loading .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(88, 166, 255, 0.2);
  border-top-color: #58a6ff;
  border-radius: 50%;
  animation: gn-spin 0.7s linear infinite;
}

@keyframes gn-spin {
  to { transform: rotate(360deg); }
}

/* 移动端自适应 */
@media (max-width: 768px) {
  .global-nav .nav-brand span { display: none; }
  .global-nav .nav-links a { padding: 4px 8px; font-size: 12px; }
  .global-nav .nav-links a .nav-label { display: none; }
}