/* tool9.css - 智能音频转换工具样式 */

/* 1. 整体容器：限制最大宽度，居中显示，加一点内边距 */
.tool9-container {background: #f8fbff;border-radius: 12px;
    max-width: 500px;
    margin: 20px auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #333;
}

/* 2. 标题样式 */
.tool9-header h3 {
    margin-top: 0;
    margin-bottom: 20px;
    text-align: center;
    color: #4a90e2; /* 科技蓝 */
    font-size: 22px;
}

/* 3. 上传区域：虚线边框，鼠标悬停变色，提示可点击 */
.tool9-upload-area {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    background-color: #fafafa;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.tool9-upload-area:hover {
    border-color: #4a90e2;
    background-color: #f0f7ff;
}

.tool9-upload-area p {
    margin: 0;
    color: #666;
    font-size: 16px;
}

/* 4. 设置区域：让两个下拉框并排或整齐排列 */
.tool9-settings {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    align-items: center;
}

.tool9-settings label {
    font-weight: bold;
    font-size: 14px;
    color: #555;
}

/* 统一美化下拉选择框 */
.tool9-select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    flex: 1; /* 让下拉框自动填充剩余空间 */
    min-width: 120px;
    outline: none;
}

.tool9-select:focus {
    border-color: #4a90e2;
}

/* 5. 转换按钮：醒目、大尺寸、带过渡动画 */
.tool9-convert-btn {
    display: block;
    width: 100%;
    padding: 12px;
    background-color: #4a90e2;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.tool9-convert-btn:hover:not(:disabled) {
    background-color: #357abd;
}

/* 按钮禁用状态（未选文件时） */
.tool9-convert-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

/* 6. 状态提示文字 */
.tool9-status {
    margin-top: 15px;
    text-align: center;
    font-size: 14px;
    min-height: 20px; /* 预留高度，防止出现文字时页面抖动 */
}