/* 公共样式 - 现代化苹果系统风格 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #0071e3;
    --primary-hover: #005bb5;
    --secondary-color: #f5f5f7;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --border-color: #d2d2d7;
    --success-color: #34c759;
    --warning-color: #ff9500;
    --danger-color: #ff3b30;
    --background-color: #f5f5f7;
    --card-background: #ffffff;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.2);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 14px;
}

.admin-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 200px;
    background-color: var(--card-background);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.sidebar:hover {
    box-shadow: var(--shadow-md);
}

.main-content {
    flex: 1;
    margin-left: 200px;
    min-height: 100vh;
    transition: var(--transition);
}

.top-header {
    background-color: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

@media (max-width: 768px) {
    .top-header {
        justify-content: space-between;
    }
}

.top-header .menu-toggle {
    background: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 20px;
    cursor: pointer;
    padding: 8px 12px;
    transition: var(--transition);
    display: none;
}

.top-header .menu-toggle:hover {
    background: #e8e8ed;
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .top-header .menu-toggle {
        display: block;
    }
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info span {
    font-weight: 500;
    color: var(--text-primary);
}

.logout-btn {
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.logout-btn:hover {
    background-color: #dc3545;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* 添加管理员按钮样式 */
.add-admin-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 24px;
}

.add-admin-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.content {
    padding: 24px;
}

/* 页面标题 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
    line-height: 1.2;
}

h2 {
    font-size: 24px;
    margin-bottom: 24px;
}

/* 按钮样式 */
button {
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 8px 16px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

button:active {
    transform: translateY(0) scale(0.98);
}

/* 按钮变体 */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

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

.btn-secondary:hover {
    background-color: #e8e8ed;
}

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

.btn-success:hover {
    background-color: #28a745;
}

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

.btn-warning:hover {
    background-color: #e68a00;
}

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

.btn-danger:hover {
    background-color: #dc3545;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-top: 24px;
    transition: var(--transition);
}

table:hover {
    box-shadow: var(--shadow-md);
}

th, td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

th {
    background-color: var(--secondary-color);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tr:hover {
    background-color: rgba(0, 113, 227, 0.02);
}

/* 弹出框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    padding: 32px;
    width: 100%;
    max-width: 480px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: var(--shadow-lg);
    animation: appleModalIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes appleModalIn {
    from { 
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
    to { 
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.modal-content.closing {
    animation: appleModalOut 0.3s cubic-bezier(0.6, -0.28, 0.735, 0.045);
}

@keyframes appleModalOut {
    from { 
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    to { 
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
}

.modal-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.modal-actions button {
    padding: 10px 20px;
    font-size: 14px;
}

.modal-actions button:first-child {
    background-color: var(--secondary-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.modal-actions button:last-child {
    background-color: var(--primary-color);
    color: white;
}

/* 消息提示样式 */
.message {
    padding: 10px 15px;
    margin-bottom: 15px;
    border-radius: 4px;
    background-color: #f0f9ff;
    border-left: 4px solid #3498db;
    color: #2c3e50;
    font-size: 14px;
}

/* 表单样式 */
.form-row {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}   align-items: flex-start;
}

/* 单选按钮样式 */
.radio-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: 12px;
}

.radio-option input[type="radio"] {
    margin-right: 8px;
    accent-color: var(--primary-color);
}

.radio-label {
    font-size: 14px;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 24px;
    width: 100%;
}

.form-group.half {
    flex: 1;
}

.form-group.third {
    flex: 1;
}

.form-group.quarter {
    flex: 1;
    padding: 0 8px;
    min-width: 0;
}

.form-group.half input[type="file"] {
    padding: 8px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    background-color: #f9f9f9;
    transition: var(--transition);
    box-sizing: border-box;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: white;
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
    transform: translateY(-1px);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .sidebar {
        width: 180px;
    }
    
    .main-content {
        margin-left: 180px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 160px;
    }
    
    .main-content {
        margin-left: 160px;
    }
    
    .content {
        padding: 20px;
    }
    
    .modal-content {
        padding: 24px;
        max-width: 90%;
    }
    
    .form-row {
        flex-direction: column;
        gap: 16px;
    }
    
    .form-group.half {
        width: 100%;
    }
    
    .form-group.quarter {
        width: 100%;
        padding: 0;
    }
    
    table {
        font-size: 13px;
    }
    
    th, td {
        padding: 12px 16px;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: 150px;
        height: 100vh;
        position: fixed;
        transform: translateX(-100%);
        transition: var(--transition);
        z-index: 200;
    }
    
    .sidebar.collapsed {
        transform: translateX(-100%);
    }
    
    .sidebar.expanded {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
    
    .main-content {
        margin-left: 0;
        transition: var(--transition);
    }
    
    .main-content.expanded {
        margin-left: 150px;
    }
    
    .content {
        padding: 16px;
    }
    
    h2 {
        font-size: 20px;
    }
    
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: 10px 12px;
    }
}

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

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

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 成功和错误消息 */
.message {
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 500;
}

.message.success {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.message.error {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.message.warning {
    background-color: rgba(255, 149, 0, 0.1);
    color: var(--warning-color);
    border-left: 4px solid var(--warning-color);
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: var(--text-primary);
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 12px;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 菜单容器样式 */
.menu-container {
    margin: 20px 0;
}

.menu-container .menu {
    list-style: none;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.menu-container .menu-item {
    margin: 0;
}

.menu-container .menu-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.menu-container .menu-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.menu-container .menu-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

/* 按钮容器样式 */
.button-container {
    margin: 20px 0;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.regular-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    font-size: 14px;
}

.regular-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.button-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

/* 首页样式优化 */
.dashboard {
    padding: 0;
}

.dashboard h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--text-primary);
}

/* 统计卡片网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

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

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--primary-hover));
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.stat-card h3 {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

/* 系统状态样式 */
.system-status {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.system-status h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.status-table {
    margin-top: 0;
    border: none;
    box-shadow: none;
}

.status-table th {
    background-color: var(--secondary-color);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.status-table td {
    font-size: 14px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

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

.status-table tr:hover {
    background-color: rgba(0, 113, 227, 0.02);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .dashboard h2 {
        font-size: 24px;
        margin-bottom: 24px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 12px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-value {
        font-size: 24px;
    }
    
    .system-status {
        padding: 16px;
    }
    
    .system-status h3 {
        font-size: 16px;
        margin-bottom: 16px;
    }
    
    .status-table td {
        padding: 10px 12px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .stat-value {
        font-size: 28px;
    }
}