.va-body { min-height: 100vh; }

.va-layout {
  display: flex;
  min-height: 100vh;
}

.va-sidebar {
  width: var(--va-sidebar-width);
  background: var(--va-bg-sidebar);
  border-right: 1px solid var(--va-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: width 0.2s ease, transform 0.25s ease;
}

.va-sidebar__logo {
  height: var(--va-header-height);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--va-primary);
  border-bottom: 1px solid var(--va-border-light);
  white-space: nowrap;
  overflow: hidden;
}

.va-sidebar__logo i {
  flex-shrink: 0;
  font-size: 20px;
}

.va-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 20, 60, 0.35);
  z-index: 99;
}

.va-sidebar__menu {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
}

.va-menu-item {
  display: block;
  padding: 9px 12px 9px 16px;
  color: var(--va-text-secondary);
  cursor: pointer;
  transition: all var(--va-transition);
  border-left: 3px solid transparent;
  position: relative;
  font-size: 14px;
}

.va-menu-item:hover { background: var(--va-bg-hover); color: var(--va-text); }

.va-menu-item.is-active {
  background: var(--va-bg-active);
  color: var(--va-primary);
  border-left-color: var(--va-primary);
  font-weight: 500;
}

.va-menu-item i { margin-right: 8px; vertical-align: -2px; }

.va-menu-group__title {
  padding: 10px 16px 4px;
  font-size: 12px;
  color: var(--va-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.va-menu-children { padding-left: 8px; }

.va-main {
  flex: 1;
  margin-left: var(--va-sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left 0.2s ease;
}

.va-header {
  height: var(--va-header-height);
  background: var(--va-bg-card);
  border-bottom: 1px solid var(--va-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--va-content-padding);
  box-shadow: var(--va-shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
  gap: 12px;
}

.va-header__left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}

.va-header__menu-btn {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--va-radius-md);
  color: var(--va-text-secondary);
  font-size: 20px;
}

.va-header__menu-btn:hover {
  color: var(--va-primary);
  background: var(--va-bg-hover);
}

.va-header__breadcrumb {
  color: var(--va-text-secondary);
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 桌面：侧栏折叠 200px ↔ 56px */
.va-layout.is-sidebar-collapsed .va-sidebar {
  width: var(--va-sidebar-width-collapsed);
}

.va-layout.is-sidebar-collapsed .va-main {
  margin-left: var(--va-sidebar-width-collapsed);
}

.va-layout.is-sidebar-collapsed .va-sidebar__logo-text,
.va-layout.is-sidebar-collapsed .va-menu-group__title,
.va-layout.is-sidebar-collapsed .va-menu-item__text {
  display: none;
}

.va-layout.is-sidebar-collapsed .va-sidebar__logo {
  justify-content: center;
  padding: 0;
}

.va-layout.is-sidebar-collapsed .va-menu-item {
  padding: 10px 0;
  text-align: center;
}

.va-layout.is-sidebar-collapsed .va-menu-item i {
  margin-right: 0;
}

.va-layout.is-sidebar-collapsed .va-menu-children {
  padding-left: 0;
}

.va-header__user {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--va-text-secondary);
}

.va-header__user-name { font-weight: 500; color: var(--va-text); }

.va-content {
  flex: 1;
  padding: var(--va-content-padding);
}

.va-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.va-page-title { font-size: 20px; font-weight: 600; }

/* 登录页布局 */
.va-guest {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4f8 100%);
  position: relative;
}

.va-guest::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,102,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,102,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.va-login-card {
  width: 420px;
  background: var(--va-bg-card);
  border-radius: var(--va-radius-lg);
  box-shadow: var(--va-shadow-lg);
  padding: 40px;
  position: relative;
  z-index: 1;
}

.va-login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.va-login-logo h1 {
  font-size: 22px;
  color: var(--va-primary);
  margin-bottom: 8px;
}

.va-login-logo p { color: var(--va-text-muted); font-size: 13px; margin: 0; }

/* 移动端：侧栏抽屉 + 遮罩 */
@media (max-width: 768px) {
  .va-sidebar {
    transform: translateX(-100%);
    box-shadow: var(--va-shadow-lg);
  }

  .va-main {
    margin-left: 0;
  }

  .va-layout.is-sidebar-open .va-sidebar {
    transform: translateX(0);
  }

  .va-layout.is-sidebar-open .va-sidebar-overlay {
    display: block;
  }

  .va-layout.is-sidebar-collapsed .va-sidebar {
    width: var(--va-sidebar-width);
  }

  .va-layout.is-sidebar-collapsed .va-main {
    margin-left: 0;
  }

  .va-layout.is-sidebar-collapsed .va-sidebar__logo-text,
  .va-layout.is-sidebar-collapsed .va-menu-group__title,
  .va-layout.is-sidebar-collapsed .va-menu-item__text {
    display: inline;
  }

  .va-layout.is-sidebar-collapsed .va-sidebar__logo {
    justify-content: flex-start;
    padding: 0 16px;
  }

  .va-layout.is-sidebar-collapsed .va-menu-item {
    padding: 9px 12px 9px 16px;
    text-align: left;
  }

  .va-layout.is-sidebar-collapsed .va-menu-item i {
    margin-right: 8px;
  }

  .va-layout.is-sidebar-collapsed .va-menu-children {
    padding-left: 12px;
  }

  .va-content {
    padding: 16px;
  }
}