/* 基础样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

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

/* 页面标题样式 */
.page-title {
    color: #333;
    margin-bottom: 30px;
    text-align: center;
    font-size: 2rem;
    font-weight: 300;
}

/* 页签样式 */
.nav-tabs {
    display: flex;
    flex-wrap: nowrap;
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
    border-bottom: 1px solid #dee2e6;
    background-color: #f8f9fa;
    border-radius: 0.375rem 0.375rem 0 0;
    overflow: hidden;
}

.nav-tabs .nav-item {
    margin-bottom: -1px;
    flex: 0 0 auto;
}

.nav-tabs .nav-link {
    display: block;
    padding: 12px 20px;
    color: #495057;
    text-decoration: none;
    background-color: transparent;
    border: none;
    border-top-left-radius: 0.375rem;
    border-top-right-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-size: 14px;
    font-weight: 500;
    position: relative;
    z-index: 2;
}

.nav-tabs .nav-link:hover {
    background-color: #e9ecef;
    color: #495057;
}

.nav-tabs .nav-link.active {
    color: #007bff;
    background-color: #fff;
    border-bottom: 2px solid #007bff;
    font-weight: 600;
}

/* 页签内容样式 */
.tab-content {
    background-color: #fff;
    border-radius: 0 0 0.375rem 0.375rem;
    padding: 30px;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border: 1px solid #dee2e6;
    border-top: none;
    clear: both;
    position: relative;
    z-index: 1;
    min-height: 400px;
}

/* 卡片样式 */
.card {
    background-color: #fff;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    margin-bottom: 20px;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    padding: 15px 20px;
    font-weight: 500;
    color: #495057;
}

.card-body {
    padding: 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    margin: 5px;
    border: 1px solid transparent;
    border-radius: 0.375rem;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-primary {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #004085;
}

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

.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
}

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

.btn-warning:hover {
    background-color: #e0a800;
    border-color: #d39e00;
}

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

.btn-success:hover {
    background-color: #218838;
    border-color: #1e7e34;
}

/* 表格样式 */
.table {
    width: 100%;
    margin-bottom: 1rem;
    color: #212529;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px;
    vertical-align: top;
    border-top: 1px solid #dee2e6;
    text-align: left;
}

.table thead th {
    vertical-align: bottom;
    border-bottom: 2px solid #dee2e6;
    background-color: #f8f9fa;
    font-weight: 500;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.05);
}

/* 状态指示器 */
.status-indicator {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
}

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

.status-warning {
    background-color: #ffc107;
}

.status-danger {
    background-color: #dc3545;
}

/* 代码块样式 */
.code-block {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 0.375rem;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .nav-tabs .nav-link {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .tab-content {
        padding: 15px;
    }
    
    .card-body {
        padding: 15px;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 提示信息样式 */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 0.375rem;
}

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

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

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

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

/* 404页面样式 */
.not-found-simple {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    width: 100%;
    text-align: center;
}

.not-found-simple p {
    font-size: 1.2rem;
    color: #6c757d;
    margin: 0;
    padding: 0;
    font-weight: 300;
    text-align: center;
    width: 100%;
}