body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    margin-top: 0;
    margin-bottom: 0;
    text-align: center;
    color: #333;
    font-size: 2.5rem; /* 使用相对单位rem */
    line-height: 1.2; /* 添加合适的行高 */
}

h2 {
    margin-top: 10;
    text-align: center;
    color: #ff0000;
    font-size: 1.5rem; /* 将字号设置为父元素字号的两倍 */
}

.controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
    gap: 20px;
}

button {
    width: 200px;
    padding: 8px 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #45a049;
}

#counter {
    font-weight: bold;
    min-width: 80px;
    text-align: center;
}

/* 新的图片对比容器样式 */
.comparison-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.image-card {
    flex: 1;
    max-width: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.image-card h3 {
    margin: 0 0 10px 0;
    color: #555;
}

.image-wrapper {
    width: 100%;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    background-color: #eee;
}

img {
    width: 100%;  /* 宽度撑满容器 */
    height: auto; /* 高度自适应，保持比例 */
    max-width: 400px; /* 取消默认的最大宽度限制 */
    border: #333 1px solid;
}

.radio-wrapper {
    margin-top: 10px;
    width: 100%;
    text-align: center;
}

.radio-container {
    display: flex;
    justify-content: center; /* 水平居中 */
    gap: 18rem; /* 调整这个值来改变间距大小 */
}

.radio-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.radio-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.2s;
    margin-bottom: 8px;
}

.radio-text {
    margin-top: 8px; 
    font-size: 14px;
    color: #333;
    text-align: center;
}

.radio-label:hover {
    background-color: #e9e9e9;
}

.folder-info {
    text-align: center;
    color: #666;
    font-size: 14px;
    margin-top: 20px;
}

.results {
    margin-top: 25px;
    padding: 20px;
    background-color: #f5f5f5;
    border-radius: 8px;
    text-align: center;
}

.results h3 {
    margin-top: 0;
    color: #333;
}

#selection-results {
    margin: 10px 0;
    max-height: 200px;
    overflow-y: auto;
    background-color: white;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

.result-item {
    padding: 5px 0;
    border-bottom: 1px solid #eee;
}

#export-btn {
    background-color: #2196F3;
}

#export-btn:hover {
    background-color: #0b7dda;
}

.error-message {
    color: #ff4444;
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

input:invalid {
    border-color: #ff4444;
}

input:valid {
    border-color: #00C851;
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1rem;
    }

    .comparison-container {
        flex-direction: column;
        gap: 15px; /* 减小间距 */
        margin-bottom: 15px;
        padding: 0 10px; /* 添加水平内边距 */
        max-width: 95%; /* 限制最大宽度 */
        margin-left: auto;
        margin-right: auto;
    }
    
    .image-card {
        max-width: 100%;
        padding: 10px; /* 减小内边距 */
    }
    
    .image-wrapper {
        min-height: 200px; /* 减小最小高度 */
    }
    
    img {
        max-height: 300px; /* 减小图片最大高度 */
    }

    .radio-container {
        gap: 8rem; /* 减小间距 */
    }
    
    .radio-wrapper {
        margin-top: 8px;
        padding: 5px;
    }
    
    .controls {
        flex-wrap: wrap; /* 小屏幕下按钮换行 */
        gap: 10px;
    }
    
    button {
        width: 45%; /* 让按钮并排显示 */
        min-width: 120px; /* 设置最小宽度 */
    }
    
    #counter {
        width: 100%; /* 计数器单独一行 */
        order: -1; /* 移到最前面 */
    }
}