/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

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

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-top: 20px;
}

/* 卡片样式 */
.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 30px;
}

.card-header {
    background-color: #3498db;
    color: #fff;
    padding: 15px 20px;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 500;
}

.card-body {
    padding: 20px;
}

/* 按钮样式 */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn i {
    margin-right: 8px;
}

.primary {
    background-color: #3498db;
    color: #fff;
}

.primary:hover {
    background-color: #2980b9;
}

.danger {
    background-color: #e74c3c;
    color: #fff;
}

.danger:hover {
    background-color: #c0392b;
}

.success {
    background-color: #2ecc71;
    color: #fff;
}

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

.info {
    background-color: #f39c12;
    color: #fff;
}

.info:hover {
    background-color: #d35400;
}

.secondary {
    background-color: #95a5a6;
    color: #fff;
}

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

/* 搜索框样式 */
.search-container {
    display: flex;
    margin-bottom: 20px;
    gap: 10px;
}

.search-container input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

table th {
    background-color: #f2f2f2;
    font-weight: 600;
}

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

.status-active {
    color: #2ecc71;
    font-weight: 500;
}

.status-used {
    color: #e74c3c;
    font-weight: 500;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

#pageInfo {
    font-size: 14px;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: #fff;
    margin: 5% auto;
    width: 80%;
    max-width: 700px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    animation: modalFadeIn 0.3s;
}

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

.modal-header {
    padding: 15px 20px;
    background-color: #3498db;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 500;
}

.close {
    color: #fff;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    border-top: 1px solid #ddd;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group textarea {
    resize: vertical;
}

/* 加载动画 */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.spinner {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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

.loading-overlay p {
    color: #fff;
    font-size: 18px;
}

/* 表单行布局 */
.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
    position: relative;
}

.field-unit {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    font-size: 12px;
    pointer-events: none;
}

.form-group input[type="number"] {
    padding-right: 35px;
}

/* SQL预览样式优化 */
#sqlPreview {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.4;
    resize: vertical;
}

.copy-sql-btn {
    margin-top: 5px;
    padding: 5px 10px;
    font-size: 12px;
}

/* 模态框尺寸调整 */
.modal-content {
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
}

/* 按钮组优化 */
.modal-footer {
    padding: 15px 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    border-top: 1px solid #ddd;
    flex-wrap: wrap;
}

/* 表单标签优化 */
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #495057;
    font-size: 14px;
}

/* 输入框优化 */
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    background-color: #fff;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: 0;
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* 下拉选择框样式 */
.form-select {
    background-image: url('data:image/svg+xml;charset=US-ASCII,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 4 5"><path fill="%23999" d="m0,0 2,3 2,-3z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    padding-right: 40px;
}

/* 卡片样式优化 */
.card {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 30px;
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 20px;
}

.card-header h2 {
    font-size: 1.6rem;
    font-weight: 600;
    margin: 0;
}

/* 按钮样式增强 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.success {
    background: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%);
    color: #fff;
}

.danger {
    background: linear-gradient(135deg, #ff416c 0%, #ff4b2b 100%);
    color: #fff;
}

.info {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    color: #333;
}

/* 头部样式增强 */
header h1 {
    color: #2c3e50;
    font-size: 2.8rem;
    margin-top: 20px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

/* 表格样式优化 */
table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

table th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
    padding: 15px;
    text-align: left;
    border: none;
}

table td {
    padding: 12px 15px;
    border-bottom: 1px solid #f1f1f1;
}

table tr:hover {
    background-color: #f8f9fa;
    transition: background-color 0.2s ease;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
        max-height: 85vh;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .form-row .form-group {
        margin-bottom: 15px;
    }
    
    header h1 {
        font-size: 2.2rem;
    }
}