/* 七棠智能家居服务平台 - 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1890ff;
    --primary-hover: #40a9ff;
    --primary-active: #096dd9;
    --success-color: #52c41a;
    --warning-color: #faad14;
    --error-color: #f5222d;
    --text-primary: #262626;
    --text-secondary: #595959;
    --text-muted: #8c8c8c;
    --border-color: #d9d9d9;
    --bg-primary: #f0f2f5;
    --bg-white: #ffffff;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-primary);
}

/* 登录页面 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-box {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
}

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

.login-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

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

.login-form input {
    width: 100%;
    height: 44px;
    padding: 0 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(24,144,255,0.1);
}

.form-error {
    color: var(--error-color);
    font-size: 13px;
    margin-bottom: 16px;
    min-height: 20px;
}

.btn-login {
    width: 100%;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

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

.btn-login:disabled {
    background: #bfbfbf;
    cursor: not-allowed;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #f0f0f0;
}

.login-footer p {
    color: var(--text-muted);
    font-size: 12px;
}

/* 管理后台布局 */
.admin-layout {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: 220px;
    background: #001529;
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 16px;
    font-weight: 500;
}

.sidebar-menu {
    padding: 12px 0;
}

.menu-item {
    display: block;
    padding: 12px 24px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
}

.menu-item:hover, .menu-item.active {
    color: white;
    background: var(--primary-color);
}

.menu-item i {
    margin-right: 10px;
    width: 16px;
    display: inline-block;
}

.main-content {
    flex: 1;
    margin-left: 220px;
    min-height: 100vh;
}

.header {
    background: white;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left h2 {
    font-size: 18px;
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 4px;
    transition: background 0.3s;
}

.user-info:hover {
    background: var(--bg-primary);
}

.content {
    padding: 24px;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    font-size: 16px;
    font-weight: 500;
}

.card-body {
    padding: 24px;
}

/* 表格样式 */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.data-table th {
    background: #fafafa;
    font-weight: 500;
    color: var(--text-secondary);
}

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

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

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

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

.btn-danger {
    background: var(--error-color);
    color: white;
}

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

.btn-default {
    background: white;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

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

/* 表单样式 */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: white;
    border-radius: 8px;
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    overflow: auto;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid #f0f0f0;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* 标签 */
.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.tag-success {
    background: #f6ffed;
    color: var(--success-color);
    border: 1px solid #b7eb8f;
}

.tag-error {
    background: #fff2f0;
    color: var(--error-color);
    border: 1px solid #ffccc7;
}

.tag-primary {
    background: #e6f7ff;
    color: var(--primary-color);
    border: 1px solid #91d5ff;
}

/* 分页 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

.pagination button {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 4px;
    cursor: pointer;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination .active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 搜索栏 */
.search-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.search-bar input {
    flex: 1;
    max-width: 300px;
}

/* 响应式 */
@media (max-width: 768px) {
    .sidebar {
        width: 0;
        overflow: hidden;
    }
    .main-content {
        margin-left: 0;
    }
}