/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    font-size: 14px;
    color: #333;
    background-color: #f5f5f5;
    line-height: 1.5;
}
.container {
    width: 90%;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px 0;
}
.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 25px;
    margin-bottom: 20px;
}
h1, h2, h3 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}
h1 {
    font-size: 24px;
    margin-top: 10px;
}
h2 {
    font-size: 20px;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}
.form-group {
    margin-bottom: 20px;
}
label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #666;
}
input, button {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
}
input:focus {
    border-color: #108ee9;
    box-shadow: 0 0 0 2px rgba(16,142,233,0.2);
}
.btn {
    background: #108ee9;
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background 0.3s;
}
.btn:hover {
    background: #0e7cd3;
}
.btn-default {
    background: #f5f5f5;
    color: #333;
    margin-right: 10px;
}
.btn-default:hover {
    background: #e5e5e5;
}
.qrcode-container {
    text-align: center;
    margin: 20px 0;
    padding: 20px;
    border: 1px dashed #ddd;
    border-radius: 4px;
}
.qrcode-img {
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}
.order-info {
    margin-top: 20px;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 4px;
}
.order-info p {
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
}
.order-info span:first-child {
    color: #666;
}
.order-info span:last-child {
    font-weight: 600;
}
.loading {
    text-align: center;
    padding: 20px;
    display: none;
}
.loading img {
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.result {
    text-align: center;
    margin: 20px 0;
    padding: 20px;
    border-radius: 4px;
    display: none;
}
.result.success {
    background: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #c8e6c9;
}
.result.error {
    background: #ffebee;
    color: #c62828;
    border: 1px solid #ffcdd2;
}
.result h3 {
    margin-bottom: 10px;
}
.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}
/* 响应式调整 */
@media (max-width: 480px) {
    .card {
        padding: 15px;
    }
    h1 {
        font-size: 20px;
    }
    h2 {
        font-size: 18px;
    }
    .btn-group {
        flex-direction: column;
    }
}