/* style.css - 响应式样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --gray-color: #95a5a6;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

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

/* 头部样式 */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--dark-color));
    color: white;
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 内容区域 */
.content-wrapper {
    flex: 1;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
}

/* 表单样式 */
.form-section h2,
.list-section h2 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

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

.btn-view:hover {
    background-color: #27ae60;
}

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

.btn-delete:hover {
    background-color: #c0392b;
}

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

.btn-back:hover {
    background-color: #7f8c8d;
}

/* 表格样式 */
.table-responsive {
    overflow-x: auto;
    margin: 1.5rem 0;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: var(--light-color);
    font-weight: 600;
    color: var(--dark-color);
    position: sticky;
    top: 0;
}

.data-table tr:hover {
    background-color: #f9f9f9;
}

.data-table .actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2rem;
}

.page-link {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    text-decoration: none;
    color: var(--dark-color);
    transition: all 0.3s ease;
}

.page-link:hover,
.page-link.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 统计信息 */
.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--light-color);
    border-radius: 5px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 600;
    color: var(--dark-color);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-color);
}

.empty-state i {
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* 详情页样式 */
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.detail-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.detail-section {
    background: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
}

.detail-section h3 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

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

.detail-item.full-width {
    grid-column: 1 / -1;
}

.detail-item strong {
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.message-full {
    background: white;
    padding: 1.5rem;
    border-radius: 5px;
    border-left: 4px solid var(--primary-color);
}

.user-agent {
    font-family: monospace;
    font-size: 0.9rem;
    word-break: break-all;
}

.code-block {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
    font-family: 'Courier New', monospace;
}

/* 提示框 */
.alert {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

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

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.9rem;
    }
    
    .detail-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1.5rem 1rem;
    }
    
    .header h1 {
        font-size: 1.75rem;
    }
    
    .content-wrapper {
        padding: 0 0.5rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .pagination {
        flex-direction: column;
        align-items: center;
    }
    
    .page-link {
        width: 100%;
        text-align: center;
    }
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .detail-header,
    .btn {
        display: none;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}