/* ==========================================================================
   Sidebar 组件样式 sidebar.css
   还原 React Sidebar.tsx 的视觉效果
   ========================================================================== */

/* --------------------------------------------------------------------------
   标准模式：flex 流内侧边栏（对齐 React Layout.tsx 架构）
   由 .page-body 的 flex 容器决定高度，不再 position:fixed
   -------------------------------------------------------------------------- */
.sidebar {
  width: var(--sidebar-width);
  height: 100%;
  background-color: var(--background);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  z-index: 40;
}

/* Logo 区域 - 顶部带下边框 */
.sidebar__logo {
  height: 80px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 1px solid var(--border);
}

.sidebar__logo-link {
  display: block;
}

.sidebar__logo-img {
  height: 40px;
  width: auto;
  display: block;
}

/* 导航菜单 */
.sidebar__nav {
  flex: 1;
  padding: 16px;
}

.sidebar__menu-item {
  position: relative;
}

.sidebar__menu-link {
  display: block;
  padding: 10px 8px;
  text-align: left;
  font-size: 14px;
  color: var(--muted-foreground);
  border-radius: var(--radius-md);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.sidebar__menu-link:hover {
  color: var(--foreground);
  background-color: hsl(210 40% 98%);
}

.sidebar__menu-item.is-active > .sidebar__menu-link {
  color: var(--foreground);
}

/* 子菜单 - 带过渡动画的展开/收起 */
.sidebar__submenu {
  padding: 0 0 0 16px;
  margin-left: 16px;
  border-left: 1px solid var(--border);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out, opacity 0.3s ease-in-out, padding 0.3s ease-in-out;
}

.sidebar__menu-item[data-has-sub='true']:hover .sidebar__submenu,
.sidebar__menu-item.is-active .sidebar__submenu {
  max-height: 300px;
  opacity: 1;
  padding: 8px 0 8px 16px;
}

.sidebar__submenu-link {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 8px;
  font-size: 14px;
  color: var(--muted-foreground);
  transition: color 0.2s ease;
}

.sidebar__submenu-link:hover {
  color: var(--foreground);
}

/* 底部版权 */
.sidebar__footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}

.sidebar__copyright {
  font-size: 10px;
  color: var(--muted-foreground);
  text-align: center;
}

/* --------------------------------------------------------------------------
   子菜单激活状态样式（URL 参数高亮）
   -------------------------------------------------------------------------- */
.sidebar__submenu-link.is-active {
  color: var(--primary);
  font-weight: 600;
  background-color: hsl(25 70% 45% / 0.1);
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   移动端响应式（768px）- 抽屉式导航
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  /* 汉堡按钮 */
  .hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.95);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    gap: 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  }
  .hamburger-btn__line {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--foreground);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
  }
  /* 打开状态 - X 图标 */
  .hamburger-btn.is-open .hamburger-btn__line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .hamburger-btn.is-open .hamburger-btn__line:nth-child(2) {
    opacity: 0;
  }
  .hamburger-btn.is-open .hamburger-btn__line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* 遮罩 */
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s;
  }
  .sidebar-overlay.is-visible {
    display: block;
    opacity: 1;
  }

  /* Sidebar 抽屉 */
  .sidebar {
    position: fixed !important;
    top: 0;
    left: 0;
    width: min(260px, 70vw);
    height: 100vh !important;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    flex-direction: column !important;
  }
  .sidebar.is-drawer-open {
    transform: translateX(0);
  }

  /* 首页模式同样适用抽屉 */
  .sidebar.is-home-mode {
    position: fixed !important;
    transform: translateX(-100%);
    width: min(260px, 70vw);
    height: 100vh !important;
  }
  .sidebar.is-home-mode.is-drawer-open {
    transform: translateX(0);
  }

  /* Logo 靠右对齐 */
  .sidebar__logo {
    align-items: flex-end;
  }

  /* 抽屉内子菜单默认展开 */
  .sidebar.is-drawer-open .sidebar__submenu {
    max-height: 300px;
    opacity: 1;
    padding: 8px 0 8px 16px;
  }
}

/* 桌面端隐藏汉堡按钮和遮罩 */
@media (min-width: 769px) {
  .hamburger-btn { display: none; }
  .sidebar-overlay { display: none; }
}