/* 基本样式和Flex布局 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.header {
    padding: 10px;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 5px;
}

select, input, button {
    padding: 5px;
}

button {
    cursor: pointer;
}

.chart-container {
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
}

canvas {
    width: 100%;
    max-height: 400px;
}

.table-container {
    overflow-x: auto;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
}

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

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #f8f8f8;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

.footer {
    text-align: center;
    padding: 10px;
    border-top: 1px solid #ddd;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .control-group {
        justify-content: space-between;
    }
}