body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column; /* 使内容垂直排列 */
    min-height: 100vh;
    background-color: #f5f7fa; /* 更柔和的背景色 */
}

.container {
    flex: 1; /* 使容器占据剩余空间 */
    text-align: center;
    background-color: #ffffff;
    padding: 40px;
    padding-bottom: 120px; /* 增加底部内边距，避免内容被遮挡 */
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 90%;
    margin: 20px auto; /* 居中容器 */
}

header h1 {
    font-size: 28px;
    color: #333;
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 20px;
}

.input-label {
    font-size: 14px;
    color: #555;
    margin-bottom: 5px;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

textarea {
    height: 150px;
}

input[type="text"]:focus,
textarea:focus {
    border-color: #007bff;
    outline: none;
}

.button-group {
    display: flex;
    gap: 10px;
}

button {
    padding: 12px 24px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

.result {
    margin-top: 20px;
    font-size: 15px;
    color: #444;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background-color: #f9f9f9;
    display: none;
}

.export-btn {
    margin-top: 15px;
    padding: 10px 20px;
    background-color: #28a745;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    transition: background-color 0.3s ease;
}

.export-btn:hover {
    background-color: #218838;
}

.settings-panel {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #f9f9f9;
    display: flex;
    flex-direction: column;
    gap: 15px; /* 增加元素之间的间距 */
}

.settings-panel label {
    font-size: 14px;
    color: #555;
    margin-bottom: 5px;
}

.settings-panel input[type="text"],
.settings-panel input[type="password"],
.settings-panel textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 14px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.settings-panel input[type="text"]:focus,
.settings-panel input[type="password"]:focus,
.settings-panel textarea:focus {
    border-color: #007bff;
    outline: none;
}

.button-group {
    display: flex;
    justify-content: flex-end; /* 按钮右对齐 */
    gap: 10px; /* 按钮之间的间距 */
}

button {
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

#saveSettings {
    background-color: #4caf50;
}

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

#resetSettings {
    background-color: #f44336;
}

#resetSettings:hover {
    background-color: #e53935;
}

/* 媒体查询：针对小屏幕设备进行优化 */
@media (max-width: 600px) {
    .container {
        padding: 20px;
    }

    header h1 {
        font-size: 24px;
    }

    input[type="text"],
    textarea {
        font-size: 14px;
    }

    button {
        font-size: 14px;
        padding: 10px 20px;
    }

    .result {
        font-size: 14px;
    }
}

.instructions {
    margin-bottom: 20px;
    padding: 15px;
    background-color: #eef2f7;
    border-radius: 8px;
    border: 1px solid #ddd;
    text-align: left;
}

.instructions h2 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.instructions p {
    font-size: 14px;
    color: #555;
    margin: 5px 0;
}

.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background-color: #f0f0f0;
    border-top: 1px solid #ddd;
    text-align: center;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.footer-content p, .footer-content h3 {
    font-size: 14px;
    color: #666;
    margin: 5px 0;
}

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

.developer-info h3 {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.qr-code {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.qr-code img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    border: 1px solid #ccc;
}

.copy-btn {
    margin-top: 15px;
    padding: 10px 20px;
    background-color: #ff9800;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    transition: background-color 0.3s ease;
}

.copy-btn:hover {
    background-color: #e68900;
}