/* 通用样式 */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

header, .results {
    margin-bottom: 20px;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    margin: 0 10px;
    border: none;
    border-radius: 5px;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    opacity: 0.9;
}

.file-input {
    margin: 0 10px;
    padding: 10px 20px;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: auto; /* 允许滚动 */
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    padding-top: 50px; /* 顶部空间 */
}

.modal-content {
    background-color: #fff;
    margin: auto;
    padding: 20px;
    width: 90%;
    max-width: 600px;
    border-radius: 10px;
}

/* 确保关闭按钮在视窗内 */
.close {
    color: #aaa;
    position: absolute;
    top: 10px;
    right: 25px;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #333;
}

/* 响应式设计 */
@media screen and (max-width: 600px) {
    .btn, .file-input {
        width: 100%;
        margin: 10px 0;
    }

    .modal-content {
        margin: 30% auto;
    }
}