.dashboard-layout {
  display: flex;
  min-height: 100vh;
  background: var(--bg-color, #f5f5f5);
}

/* ========== 侧边栏 ========== */
.dashboard-sidebar {
  width: 125px;
  background: #fff;
  border-right: 1px solid var(--border-color, #e8e8e8);
  display: flex;
  flex-direction: column;
  transition: width 0.3s ease;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 100;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.05);
}

.dashboard-sidebar.closed {
  width: 60px;
}

.sidebar-header {
  padding: var(--padding-md, 16px) var(--padding-sm, 12px);
  border-bottom: 1px solid var(--border-color, #e8e8e8);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--brand-primary, #0ea5e9);
  align-items: center;
  text-align: center;
}

.sidebar-logo h2 {
  margin: 0;
  font-size: 18px;
  font-weight: bold;
  line-height: 1.2;
}

.sidebar-logo span {
  font-size: 10px;
  color: var(--text-light, #666);
  line-height: 1.2;
  margin-top: 2px;
}

.dashboard-sidebar.closed .sidebar-logo span {
  display: none;
}

.dashboard-sidebar.closed .sidebar-logo h2 {
  font-size: 16px;
}

.sidebar-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-light, #666);
  padding: 4px;
  flex-shrink: 0;
}

.dashboard-sidebar.closed .sidebar-toggle {
  margin: 0 auto;
}

.sidebar-nav {
  flex: 1;
  padding: var(--padding-sm, 12px) 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--padding-sm, 12px) var(--padding-xs, 8px);
  color: var(--text-color, #333);
  text-decoration: none;
  transition: all 0.2s;
  border-left: 3px solid transparent;
  text-align: center;
  min-height: 70px;
}

.nav-item:hover {
  background: rgba(14, 165, 233, 0.05);
  color: var(--brand-primary, #0ea5e9);
}

.nav-item.active {
  background: rgba(14, 165, 233, 0.1);
  color: var(--brand-primary, #0ea5e9);
  border-left-color: var(--brand-primary, #0ea5e9);
  font-weight: 500;
}


.nav-icon {
  font-size: 16px;
  margin-bottom: var(--padding-xs, 8px);
  width: auto;
  text-align: center;
  display: block;
}

.nav-text {
  font-size: 12px;
  line-height: 1.2;
  word-break: break-all;
  text-align: center;
}

.dashboard-sidebar.closed .nav-text {
  display: none;
}

.dashboard-sidebar.closed .nav-icon {
  margin-bottom: 0;
}

.dashboard-sidebar.closed .nav-item {
  flex-direction: row;
  justify-content: center;
  min-height: auto;
  padding: var(--padding-md, 16px);
  border-left: 3px solid transparent;
  border-top: none;
}

.dashboard-sidebar.closed .nav-item.active {
  border-left-color: var(--brand-primary, #0ea5e9);
  border-top: none;
}

.nav-group {
  margin-top: var(--padding-sm, 12px);
}

.nav-submenu {
  padding-left: var(--padding-xs, 8px);
  background: rgba(14, 165, 233, 0.02);
  margin-top: var(--padding-xs, 8px);
}

.nav-subitem {
  display: block;
  padding: var(--padding-xs, 8px) var(--padding-sm, 12px);
  color: var(--text-light, #666);
  text-decoration: none;
  font-size: 11px;
  transition: all 0.2s;
  text-align: center;
  line-height: 1.4;
}

.nav-subitem:hover {
  color: var(--brand-primary, #0ea5e9);
  background: rgba(14, 165, 233, 0.05);
}

.nav-subitem.active {
  color: var(--brand-primary, #0ea5e9);
  font-weight: 500;
}

/* ========== 主内容区 ========== */
.dashboard-main {
  flex: 1;
  margin-left: 125px;
  display: flex;
  flex-direction: column;
  transition: margin-left 0.3s ease;
}

.dashboard-sidebar.closed ~ .dashboard-main {
  margin-left: 60px;
}

.dashboard-header {
  background: #fff;
  padding: var(--padding-md, 16px) var(--padding-xl, 24px);
  border-bottom: 1px solid var(--border-color, #e8e8e8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--padding-xl, 24px);
  flex: 1;
}

.header-logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--brand-primary, #0ea5e9);
  margin-right: var(--padding-lg, 20px);
}

.header-logo h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
}

.header-logo span {
  font-size: 12px;
  color: var(--text-light, #666);
  line-height: 1.2;
}

.header-nav {
  display: flex;
  gap: var(--padding-lg, 20px);
  align-items: center;
}

.header-nav a {
  color: var(--text-color, #333);
  font-size: 15px;
  padding: 8px 0;
  position: relative;
  text-decoration: none;
  transition: color 0.3s ease;
}

.header-nav a:hover {
  color: var(--brand-primary, #0ea5e9);
}

.header-nav a.active {
  color: var(--brand-primary, #0ea5e9);
  font-weight: 600;
}

.header-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-primary, #0ea5e9);
}

/* 下拉菜单样式 */
.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white, #fff);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  min-width: 180px;
  padding: 10px 0;
  margin-top: 10px;
  z-index: 1000;
  border: 1px solid var(--border-color, #e8e8e8);
}

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  color: var(--text-color, #333);
  font-size: 14px;
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease;
}

.dropdown-menu a:hover {
  background: var(--bg-color, #f5f5f5);
  color: var(--brand-primary, #0ea5e9);
}

.dropdown-menu a.active {
  background: var(--bg-color, #f5f5f5);
  color: var(--brand-primary, #0ea5e9);
  font-weight: 600;
}

.dropdown-menu a.active::after {
  display: none;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--padding-lg, 20px);
}

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.user-name {
  font-weight: 500;
  color: var(--text-color, #333);
  font-size: 14px;
}

.user-role {
  font-size: 12px;
  color: var(--text-light, #666);
}

.logout-btn {
  background: var(--brand-primary, #0ea5e9);
  color: #fff;
  border: none;
  padding: var(--padding-sm, 12px) var(--padding-lg, 20px);
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}

.logout-btn:hover {
  background: var(--brand-primary-dark, #0284c7);
}

.dashboard-content {
  flex: 1;
  padding: var(--padding-xl, 24px);
  overflow-y: auto;
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .header-nav {
    gap: var(--padding-md, 16px);
  }
  
  .header-nav a {
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  .dashboard-sidebar {
    transform: translateX(-100%);
  }
  
  .dashboard-sidebar.open {
    transform: translateX(0);
  }
  
  .dashboard-main {
    margin-left: 0;
  }
  
  .header-left {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--padding-md, 16px);
  }
  
  .header-nav {
    flex-wrap: wrap;
    gap: var(--padding-sm, 12px);
  }
  
  .header-nav a {
    font-size: 13px;
  }
  
  .dropdown-menu {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    min-width: 200px;
  }
}