/* ==========================================================================
   导航栏组件 (Navbar)
   ========================================================================== */

.zuoekai-navbar {
  position: relative;
  background-color: var(--zuoekai-color-surface-page);
  border-bottom: 1px solid var(--zuoekai-color-border);
  width: 100%;
  z-index: 1000;
}

.zuoekai-navbar__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px; /* Default height */
  padding: 0 16px;
  max-width: 1280px;
  margin: 0 auto;
}

/* 品牌 (Brand) */
.zuoekai-navbar__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--zuoekai-color-text);
  text-decoration: none;
  margin-right: 32px;
}

.zuoekai-navbar__brand svg {
  color: var(--zuoekai-color-brand-600);
}

/* 导航菜单 (Menu) */
.zuoekai-navbar__menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.zuoekai-navbar__item {
  display: flex;
  align-items: center;
}

.zuoekai-navbar__link {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--zuoekai-color-text-secondary);
  text-decoration: none;
  border-radius: var(--zuoekai-radius-md);
  transition: all 0.2s;
}

.zuoekai-navbar__link:hover {
  color: var(--zuoekai-color-brand-600);
  background-color: var(--zuoekai-color-surface-hover);
}

.zuoekai-navbar__link--active {
  color: var(--zuoekai-color-brand-600);
  background-color: var(--zuoekai-color-brand-50);
}

/* 右侧操作区 (Actions) */
.zuoekai-navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

/* 移动端菜单切换按钮 */
.zuoekai-navbar__toggle {
  display: none; /* Desktop hidden */
  background: transparent;
  border: none;
  padding: 8px;
  color: var(--zuoekai-color-text);
  cursor: pointer;
}

/* --- 移动端响应式 (Mobile) --- */
@media (max-width: 768px) {
  .zuoekai-navbar__toggle {
    display: block;
  }

  .zuoekai-navbar__menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    background-color: var(--zuoekai-color-surface-page);
    border-bottom: 1px solid var(--zuoekai-color-border);
    padding: 16px;
    gap: 4px;
    display: none; /* Hidden by default on mobile */
    box-shadow: var(--zuoekai-shadow-lg);
  }

  .zuoekai-navbar__menu--open {
    display: flex;
  }

  .zuoekai-navbar__actions {
    display: none; /* Simplify for mobile, or move into menu */
  }
  
  /* 如果要在移动端显示 actions，可以调整样式，或者放入 menu 中 */
}

/* --- 变体 (Variants) --- */

/* 1. 固定顶部 (Fixed) */
.zuoekai-navbar--fixed {
  position: fixed;
  top: 0;
  left: 0;
}

/* 2. 透明背景 (Transparent) - 用于 Hero banner 上 */
.zuoekai-navbar--transparent {
  background-color: transparent;
  border-bottom: none;
}

/* 3. 深色模式适配在 base.css 或 tokens.css 中处理 */