/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

header, footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 1rem 0;
}

header h1 {
    font-size: 1.8rem;
}

main {
    padding: 20px;
}

.container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

/* 左侧控制面板 */
.left-panel {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
}

.control-section {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 15px;
    margin-bottom: 20px;
}

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

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input[type="text"], select, textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

textarea {
    resize: vertical;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

button:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

.description-box, .result-box {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 10px;
    min-height: 60px;
    max-height: 200px;
    overflow-y: auto;
}

/* 右侧绘图区 */
.right-panel {
    flex: 2;
    min-width: 300px;
}

#canvas-container {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    width: 100%;
    height: 500px;
    overflow: hidden;
}

#render-canvas {
    width: 100%;
    height: 100%;
}

.canvas-info {
    text-align: center;
    margin-top: 10px;
}

.hint {
    font-size: 12px;
    color: #7f8c8d;
}

/* 辅助类 */
.hidden {
    display: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .left-panel, .right-panel {
        max-width: 100%;
    }
    
    #canvas-container {
        height: 400px;
    }
}