/* 
 * 万物具身小二后台 - 现代化控制台样式
 * 参考阿里云物联网边缘计算控制台设计
 */

/* ========== 微信浏览器兼容性优化 ========== */
/* 修复微信浏览器中无法显示侧边栏的问题 */
@supports (-webkit-touch-callout: none) {
    .admin-layout {
        display: flex !important;
    }
    
    .side-menu {
        display: block !important;
        flex-shrink: 0 !important;
    }
    
    .main-content {
        flex: 1 !important;
        min-width: 0 !important;
    }
}

/* ========== 全局变量和基础样式 ========== */
:root {
    /* 主题色 - 阿里蓝 */
    --primary-color: #1890ff;
    --primary-hover: #40a9ff;
    --primary-active: #096dd9;
    
    /* 功能色 */
    --success-color: #52c41a;
    --warning-color: #faad14;
    --error-color: #f5222d;
    --info-color: #1890ff;
    
    /* 中性色 */
    --text-primary: rgba(0, 0, 0, 0.85);
    --text-secondary: rgba(0, 0, 0, 0.65);
    --text-disabled: rgba(0, 0, 0, 0.25);
    --border-color: #d9d9d9;
    --background-light: #fafafa;
    --background-white: #ffffff;
    --card-background: #ffffff;
    --nav-background: linear-gradient(135deg, #001529 0%, #002140 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03), 0 1px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px 0 rgba(0, 0, 0, 0.02);
    --shadow-md: 0 3px 6px -4px rgba(0, 0, 0, 0.12), 0 6px 16px 0 rgba(0, 0, 0, 0.08), 0 9px 28px 8px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 6px 16px -8px rgba(0, 0, 0, 0.08), 0 9px 28px 0 rgba(0, 0, 0, 0.05), 0 12px 48px 16px rgba(0, 0, 0, 0.03);
    
    /* 圆角 */
    --border-radius-sm: 2px;
    --border-radius-md: 4px;
    --border-radius-lg: 8px;
    
    /* ========== 响应式断点 ========== */
    --screen-xs: 480px;   /* 手机横屏 */
    --screen-sm: 768px;   /* 平板 */
    --screen-md: 992px;   /* 小屏笔记本 */
    --screen-lg: 1200px;  /* 桌面 */
    --screen-xl: 1600px;  /* 大屏 */
}

/* ========== 暗色模式 ========== */
[data-theme='dark'] {
    --text-primary: rgba(255, 255, 255, 0.85);
    --text-secondary: rgba(255, 255, 255, 0.65);
    --text-disabled: rgba(255, 255, 255, 0.25);
    --border-color: rgba(255, 255, 255, 0.12);
    --background-light: #141414;
    --background-white: #1f1f1f;
    --card-background: #1f1f1f;
    --nav-background: linear-gradient(135deg, #000c17 0%, #001529 100%);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3), 0 1px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 3px 6px -4px rgba(0, 0, 0, 0.48), 0 6px 16px 0 rgba(0, 0, 0, 0.32), 0 9px 28px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 6px 16px -8px rgba(0, 0, 0, 0.32), 0 9px 28px 0 rgba(0, 0, 0, 0.2), 0 12px 48px 16px rgba(0, 0, 0, 0.12);
}

/* 暗色模式侧边菜单 */
[data-theme='dark'] .side-menu {
    background: #1f1f1f;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
}

[data-theme='dark'] .side-menu-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

[data-theme='dark'] .side-menu-header h3 {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme='dark'] .side-menu-item {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme='dark'] .side-menu-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
}

[data-theme='dark'] .side-menu-item.active {
    background-color: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
    border-left-color: rgba(255, 255, 255, 0.85);
}

[data-theme='dark'] .side-menu-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

[data-theme='dark'] .user-name {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme='dark'] .user-menu-dropdown {
    background: #1f1f1f;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.48);
}

/* ========== 微信浏览器特殊样式 ========== */
/* 修复微信浏览器中的布局问题 */
body.wechat-browser {
    -webkit-overflow-scrolling: touch;
}

body.wechat-browser .admin-layout {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
}

body.wechat-browser .side-menu {
    position: relative;
    width: 260px;
    display: block !important;
}

body.wechat-browser .main-content {
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    flex: 1;
    min-width: 0;
}

/* 微信浏览器中的响应式优化 */
@media screen and (max-width: 768px) {
    body.wechat-browser .side-menu {
        width: 100%;
        position: relative;
    }
}

[data-theme='dark'] .user-menu-item {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme='dark'] .user-menu-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
    font-size: 14px;
    line-height: 1.5715;
    color: var(--text-primary);
    background-color: var(--background-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

/* ========== 导航栏 - 现代化侧边栏设计 ========== */
.navbar {
    background: var(--nav-background);
    color: white;
    padding: 0;
    box-shadow: var(--shadow-lg);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 64px;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    padding: 0 24px;
    max-width: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.navbar-brand h3 {
    color: white;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin: 0;
}

.navbar-brand-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.navbar-menu {
    list-style: none;
    display: flex;
    gap: 8px;
    align-items: center;
}

.navbar-menu li a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--border-radius-md);
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.navbar-menu li a:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar-menu li a.active {
    color: white;
    background-color: var(--primary-color);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-left: 16px;
    border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #722ed1 0%, #13c2c2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 14px;
}

.user-name {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
}

.main-layout {
    display: flex;
    min-height: 100vh;
    padding-top: 64px;
}

/* ========== 管理员布局 - 仅侧边导航 ========== */
.admin-layout {
    display: flex;
    min-height: 100vh;
    background-color: var(--background-light);
}

.side-menu {
    width: 260px;
    background: linear-gradient(180deg, #001529 0%, #002140 100%);
    color: white;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
    transition: width 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* 收缩状态 */
.side-menu.collapsed {
    width: 80px;
}

.side-menu.collapsed .side-menu-header {
    justify-content: center;
    padding: 20px 10px;
}

.side-menu.collapsed .side-menu-header h3 {
    display: none;
}

.side-menu.collapsed .side-menu-item {
    justify-content: center;
    padding: 14px 10px;
}

.side-menu.collapsed .side-menu-item .menu-text {
    display: none;
}

.side-menu.collapsed .side-menu-item i {
    margin-right: 0;
    font-size: 20px;
}

.side-menu.collapsed .user-info {
    justify-content: center;
    padding: 16px 10px;
    gap: 0;
}

.side-menu.collapsed .user-details {
    display: none;
}

.side-menu.collapsed .user-avatar {
    margin: 0;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.side-menu-header {
    padding: 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.side-menu-header .navbar-brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.side-menu-header h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    color: white;
}

.side-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    white-space: nowrap;
    overflow: hidden;
}

.side-menu-item .menu-text {
    transition: opacity 0.3s;
}

.side-menu-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: white;
}

.side-menu-item.active {
    background-color: rgba(24, 144, 255, 0.2);
    color: white;
    border-left-color: var(--primary-color);
}

.side-menu-item i {
    font-size: 18px;
    width: 20px;
    text-align: center;
}

/* 侧边菜单底部 */
.side-menu-footer {
    margin-top: auto;
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 16px;
}

.user-details {
    flex: 1;
}

.user-name {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: white;
    margin-bottom: 4px;
}

.logout-link {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    transition: color 0.3s;
}

.logout-link:hover {
    color: white;
    text-decoration: underline;
}

/* 用户菜单下拉 */
.user-menu-dropdown {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    background: white;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    margin-bottom: 8px;
    z-index: 1000;
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
}

.user-menu-item:hover {
    background-color: var(--background-light);
    color: var(--primary-color);
}

.user-menu-item i {
    width: 16px;
    text-align: center;
}

.theme-toggle {
    width: 100%;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-md);
    color: white;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

.main-content {
    margin-left: 260px;
    flex: 1;
    padding: 24px;
    min-height: 100vh;
    background-color: var(--background-light);
}

.side-menu {
    width: 256px;
    background: white;
    box-shadow: var(--shadow-sm);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 999;
    border-right: 1px solid var(--border-color);
}

.side-menu-item {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    gap: 10px;
}

.side-menu-item:hover {
    background-color: #e6f7ff;
    color: var(--primary-color);
}

.side-menu-item.active {
    background-color: #e6f7ff;
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

/* 登录页面 */
/* ========== 登录页面 - Material Design 现代化风格 ========== */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.login-box {
    background: rgba(255, 255, 255, 0.98);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: 48px;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 440px;
    position: relative;
    z-index: 1;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.login-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3);
}

/* 品牌 Logo 区 */
.login-brand {
    text-align: center;
    margin-bottom: 32px;
}

.brand-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(24, 144, 255, 0.3);
}

.brand-logo i {
    font-size: 36px;
    color: white;
}

.login-brand h2 {
    font-size: 26px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.brand-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

/* 表单样式 - Material Design 浮动标签 */
.login-form {
    margin-top: 32px;
}

.form-group-icon {
    margin-bottom: 24px;
    position: relative;
}

.form-group-icon > label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group-icon > label i {
    color: var(--primary-color);
    font-size: 16px;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 18px;
    pointer-events: none;
    transition: color 0.3s;
}

.form-control,
.input-wrapper input[type="text"],
.input-wrapper input[type="password"] {
    width: 100%;
    padding: 16px 16px 16px 48px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 15px;
    transition: all 0.3s;
    background-color: rgba(255, 255, 255, 0.9);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(24, 144, 255, 0.1);
}

.input-wrapper input:focus ~ .input-icon {
    color: var(--primary-color);
}

/* 浮动标签 */
.floating-label {
    position: absolute;
    left: 48px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 15px;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    background-color: transparent;
    padding: 0 4px;
}

.input-wrapper input:focus ~ .floating-label,
.input-wrapper input:not(:placeholder-shown) ~ .floating-label {
    top: 0;
    transform: translateY(-50%) scale(0.85);
    font-size: 12px;
    color: var(--primary-color);
    background-color: white;
}

/* 密码切换按钮 */
.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    font-size: 18px;
    transition: color 0.3s;
}

.password-toggle:hover {
    color: var(--primary-color);
}

/* 记住我选项 */
.form-options {
    margin-bottom: 24px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-label span {
    transition: color 0.3s;
}

.checkbox-label:hover span {
    color: var(--text-primary);
}

/* 登录按钮 */
.btn-login {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border: none;
    border-radius: var(--border-radius-md);
    color: white;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    box-shadow: 0 4px 16px rgba(24, 144, 255, 0.3);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(24, 144, 255, 0.4);
}

.btn-login:active {
    transform: translateY(0);
}

/* 页脚 */
.login-footer {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.login-footer p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
}

/* ========== 表单样式 - 现代化设计 ========== */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-group label .required {
    color: var(--error-color);
    margin-right: 4px;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 14px;
    transition: all 0.3s;
    background-color: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-hover);
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.form-control:hover:not(:focus) {
    border-color: #bfbfbf;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* ========== 表格 - 现代化设计 ========== */
.table-container {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background-color: #fafafa;
}

.data-table th {
    padding: 16px;
    text-align: left;
    font-weight: 500;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.data-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
}

.data-table tbody tr {
    transition: all 0.3s;
}

.data-table tbody tr:hover {
    background-color: #fafafa;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* ========== 卡片和面板 ========== */
.card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    margin-bottom: 24px;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-extra {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========== 按钮 - 现代化设计 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 14px;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    outline: none;
    position: relative;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    pointer-events: none;
}

.btn:hover::before {
    border-color: currentColor;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.045);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

.btn-primary:active {
    background-color: var(--primary-active);
}

.btn-success {
    background-color: var(--success-color);
    color: white;
    border-color: var(--success-color);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.045);
}

.btn-success:hover {
    background-color: #73d13d;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
    border-color: var(--warning-color);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.045);
}

.btn-warning:hover {
    background-color: #ffc53d;
}

.btn-danger {
    background-color: var(--error-color);
    color: white;
    border-color: var(--error-color);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.045);
}

.btn-danger:hover {
    background-color: #ff4d4f;
}

.btn-default {
    background-color: white;
    color: var(--text-primary);
    border-color: var(--border-color);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.015);
}

.btn-default:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 13px;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
    border-color: var(--success-color);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.045);
}

.btn-success:hover {
    background-color: #73d13d;
}

.btn-info {
    background-color: #17a2b8;
    color: white;
    border-color: #17a2b8;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.045);
}

.btn-info:hover {
    background-color: #138496;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ========== 警告框 - 现代化设计 ========== */
.alert {
    padding: 12px 16px;
    margin-bottom: 24px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #f6ffed;
    border-color: #b7eb8f;
    color: #52c41a;
}

.alert-error,
.alert-danger {
    background-color: #fff2f0;
    border-color: #ffccc7;
    color: #f5222d;
}

.alert-info {
    background-color: #e6f7ff;
    border-color: #91d5ff;
    color: #1890ff;
}

.alert-warning {
    background-color: #fffbe6;
    border-color: #ffe58f;
    color: #faad14;
}

/* ========== 仪表盘 - 卡片式统计 ========== */
.dashboard {
    padding: 0;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.page-extra {
    color: var(--text-secondary);
    font-size: 14px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--card-background);
    padding: 24px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color) 0%, #40a9ff 100%);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.stat-card.success::before {
    background: linear-gradient(180deg, var(--success-color) 0%, #73d13d 100%);
}

.stat-card.warning::before {
    background: linear-gradient(180deg, var(--warning-color) 0%, #ffc53d 100%);
}

.stat-card.danger::before {
    background: linear-gradient(180deg, var(--error-color) 0%, #ff4d4f 100%);
}

.stat-card h3 {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
    font-weight: 500;
}

.stat-number {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1;
}

.stat-number.online {
    color: var(--success-color);
}

.stat-number.offline {
    color: var(--text-secondary);
}

.stat-number.maintenance {
    color: var(--warning-color);
}

.stat-number.pending {
    color: var(--info-color);
}

.stat-number.paid {
    color: var(--success-color);
}

.stat-number.shipped {
    color: #722ed1;
}

.stat-footer {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-secondary);
}

/* ========== 个人中心 ========== */
.profile-container {
    background: var(--card-background);
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.profile-container h2 {
    margin-bottom: 24px;
    color: var(--text-primary);
    font-size: 20px;
}

.profile-info p {
    margin-bottom: 16px;
    font-size: 15px;
    color: var(--text-secondary);
}

/* ========== 欢迎页面 ========== */
.welcome {
    text-align: center;
    padding: 80px 20px;
    background: var(--card-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.welcome h1 {
    color: var(--text-primary);
    margin-bottom: 16px;
    font-size: 28px;
}

.welcome p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.welcome a {
    color: var(--primary-color);
    text-decoration: none;
}

.welcome a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* ========== 页脚 ========== */
footer {
    text-align: center;
    padding: 24px;
    margin-top: 40px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    font-size: 14px;
}

/* ========== 响应式设计 - 移动端优化 ========== */

/* 汉堡菜单按钮（移动端） */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    transition: all 0.3s;
}

.menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
}

/* 平板和手机适配 */
@media screen and (max-width: 992px) {
    /* 导航栏调整 */
    .navbar-menu {
        display: none;
    }
    
    .navbar-user {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    /* 侧边菜单改为可折叠 */
    .side-menu {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    }
    
    .side-menu.open {
        transform: translateX(0);
    }
    
    /* 主内容区调整 */
    .main-content {
        margin-left: 0;
        padding: 16px;
    }
    
    /* 统计卡片单列显示 */
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    /* 工具栏垂直布局 */
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-actions,
    .toolbar-filters {
        justify-content: stretch;
    }
    
    .search-input {
        min-width: auto;
        width: 100%;
    }
    
    /* 表格支持横向滚动 */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .data-table {
        min-width: 800px;
    }
}

/* 手机横屏和竖屏优化 */
@media screen and (max-width: 768px) {
    /* 更小的内边距 */
    .container {
        padding: 12px;
    }
    
    .card {
        padding: 16px;
    }
    
    /* 按钮尺寸优化 */
    .btn {
        padding: 10px 16px;
        font-size: 15px;
        min-height: 44px; /* 触摸友好 */
    }
    
    .btn-sm {
        padding: 6px 12px;
        font-size: 14px;
        min-height: 36px;
    }
    
    /* 字体大小调整 */
    body {
        font-size: 15px;
    }
    
    h1, .page-title {
        font-size: 20px !important;
    }
    
    /* 仪表盘卡片优化 */
    .stat-card {
        padding: 20px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    /* 表单控件 */
    .form-control {
        font-size: 16px; /* 防止 iOS 自动缩放 */
    }
    
    /* 底部导航栏（可选） */
    .bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--card-background);
        box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
        z-index: 999;
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .bottom-nav-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 8px 0;
        color: var(--text-secondary);
        text-decoration: none;
        font-size: 12px;
        gap: 4px;
    }
    
    .bottom-nav-item.active {
        color: var(--primary-color);
    }
    
    .bottom-nav-item i {
        font-size: 20px;
    }
}

/* 小屏手机优化 */
@media screen and (max-width: 480px) {
    .navbar-brand h3 {
        font-size: 16px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-number {
        font-size: 24px;
    }
}

/* 桌面大屏优化 */
@media screen and (min-width: 1600px) {
    .container {
        max-width: 1600px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========== 徽章 - 状态标签 ========== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
}

.badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: currentColor;
}

.badge-online {
    background-color: #f6ffed;
    color: #52c41a;
}

.badge-offline {
    background-color: #f5f5f5;
    color: rgba(0, 0, 0, 0.25);
}

.badge-maintenance {
    background-color: #fffbe6;
    color: #faad14;
}

.badge-4s {
    background-color: #e6f7ff;
    color: #1890ff;
}

.badge-dj {
    background-color: #fff0f6;
    color: #eb2f96;
}

/* ========== 分页 ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination .btn {
    min-width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.page-info {
    color: var(--text-secondary);
    font-size: 14px;
    padding: 0 12px;
}

/* ========== 加载动画 ========== */
.loading {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(24, 144, 255, 0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========== 空状态 ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state-text {
    font-size: 16px;
    margin-bottom: 16px;
}

/* ========== 工具栏 ========== */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    gap: 16px;
    flex-wrap: wrap;
}

.toolbar-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.toolbar-filters {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-input {
    min-width: 280px;
}