/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #f5f5f5;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* 头部样式 */
.admin-header {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.admin-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
}

.logo {
    font-size: 20px;
    font-weight: 600;
    color: #667eea;
}

.main-nav {
    display: flex;
    gap: 5px;
}

.main-nav a {
    padding: 8px 16px;
    text-decoration: none;
    color: #666;
    border-radius: 5px;
    transition: all 0.3s;
}

.main-nav a:hover,
.main-nav a.active {
    background: #667eea;
    color: white;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logout-btn {
    padding: 6px 12px;
    background: #f44336;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
}

.logout-btn:hover {
    background: #d32f2f;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    padding: 30px 0;
}

/* 页面标题 */
.page-title {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 20px;
    margin-bottom: 20px;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-box {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-box h3 {
    font-size: 14px;
    color: #999;
    margin-bottom: 10px;
    font-weight: normal;
}

.stat-box p {
    font-size: 32px;
    font-weight: 600;
    color: #667eea;
}

/* 工具栏 */
.toolbar {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-form {
    display: flex;
    gap: 10px;
}

.search-form input[type="text"] {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    min-width: 250px;
}

/* 按钮样式 */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-success {
    background: #4caf50;
    color: white;
}

.btn-success:hover {
    background: #45a049;
}

.btn-danger {
    background: #f44336;
    color: white;
}

.btn-danger:hover {
    background: #d32f2f;
}

.btn-secondary {
    background: #9e9e9e;
    color: white;
}

.btn-secondary:hover {
    background: #757575;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

table thead {
    background: #f5f5f5;
}

table th,
table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

table th {
    font-weight: 600;
    color: #666;
}

table tbody tr:hover {
    background: #f9f9f9;
}

table a {
    color: #667eea;
    text-decoration: none;
    margin-right: 10px;
}

table a:hover {
    text-decoration: underline;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="email"],
.form-group input[type="datetime-local"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

/* 提示信息 */
.hint {
    font-size: 12px;
    color: #999;
    margin-top: 5px;
}

.alert {
    padding: 12px 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-top: 20px;
}

.pagination a,
.pagination span {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-decoration: none;
    color: #333;
}

.pagination a:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.pagination .active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* 底部样式 */
.admin-footer {
    background: #fff;
    padding: 20px 0;
    text-align: center;
    color: #999;
    font-size: 14px;
    border-top: 1px solid #e0e0e0;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
}

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

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content {
    background: white;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 30px;
    animation: slideDown 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.modal-header h3 {
    margin: 0;
    color: #333;
    font-size: 20px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: #999;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.modal-close:hover {
    background: #f5f5f5;
    color: #333;
}

/* 响应式 */
@media (max-width: 768px) {
    .admin-header .container {
        flex-direction: column;
        gap: 15px;
    }

    .main-nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 12px;
    }

    table th,
    table td {
        padding: 8px 6px;
    }
}

/* 操作按钮样式 */
.action-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 13px;
    border-radius: 4px;
    text-decoration: none;
    display: inline-block;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-info {
    background: #17a2b8;
    color: white;
}

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

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

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

.btn-success:hover {
    background: #218838;
}

.btn-warning {
    background: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background: #e0a800;
}

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

.btn-danger:hover {
    background: #c82333;
}

/* 用户详情页面样式 */
.detail-container {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.detail-header {
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 20px;
    margin-bottom: 30px;
}

.detail-header h2 {
    color: #333;
    font-size: 24px;
    margin-bottom: 10px;
}

.detail-section {
    margin-bottom: 30px;
}

.detail-section h3 {
    color: #667eea;
    font-size: 18px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #f0f0f0;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.detail-item {
    display: flex;
    flex-direction: column;
}

.detail-item label {
    font-weight: 600;
    color: #666;
    margin-bottom: 8px;
    font-size: 14px;
}

.detail-item .value {
    color: #333;
    font-size: 15px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 4px;
}

.detail-item input,
.detail-item select {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.detail-item input:focus,
.detail-item select:focus {
    outline: none;
    border-color: #667eea;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

.btn-lg {
    padding: 12px 30px;
    font-size: 15px;
    border-radius: 6px;
}