.qrcode-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

.qrcode-img {
    margin: 30px auto;
    width: 250px;
    height: 250px;
    border: 1px solid #ddd;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qrcode-img img {
    max-width: 100%;
    max-height: 100%;
}

.loading {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 3px solid rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    border-top-color: #007bff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.instructions {
    margin: 30px auto;
    max-width: 500px;
    text-align: left;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.instructions ol {
    margin-left: 20px;
    padding-left: 0;
}

.countdown {
    font-size: 1.2rem;
    font-weight: bold;
    margin: 10px 0;
    color: #dc3545;
}

.countdown-wrapper {
    margin-top: 10px;
}

.countdown-progress {
    height: 6px;
    margin-top: 5px;
    transition: width 1s linear;
}

.qrcode-area {
    margin-bottom: 20px;
}

.nav-tabs .nav-link {
    font-size: 1.2rem;
    font-weight: 500;
}

.tab-content {
    padding-top: 20px;
}

#card-form {
    max-width: 600px;
    margin: 0 auto;
}

/* 掃描結果樣式 */
.credential-list {
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 1rem;
}

.credential-list li {
    text-align: left;
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.credential-list li:last-child {
    border-bottom: none;
}

.credential-list li strong {
    display: inline-block;
    width: 30%;
    margin-right: 10px;
}

.scan-result-card {
    background-color: #e8f5e9;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
}

.scan-result-card h4 {
    color: #2e7d32;
    margin-bottom: 15px;
}

.scan-result-content {
    margin-top: 15px;
    max-width: 100%;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

.scan-result-footer {
    margin-top: 20px;
    font-style: italic;
    color: #666;
}

.credential-card {
    margin-top: 1.5rem;
    border: 1px solid rgba(0, 0, 0, 0.125);
    border-radius: 0.25rem;
    max-width: 800px; /* 增加最大寬度 */
    margin-left: auto;
    margin-right: auto;
}

.credential-header {
    padding: 0.75rem 1.25rem;
    margin-bottom: 0;
    background-color: #28a745;
    color: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

.credential-body {
    padding: 1.25rem;
}

/* 手機版響應式調整 */
@media (max-width: 767px) {
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .qrcode-img {
        width: 200px;
        height: 200px;
    }
    
    .instructions {
        padding: 15px;
        margin: 20px auto;
    }
    
    .nav-tabs .nav-link {
        font-size: 1rem;
        padding: 0.5rem;
    }
    
    .btn {
        padding: 0.375rem 0.5rem;
        font-size: 0.9rem;
    }
    
    .qrcode-container {
        padding: 10px;
    }
    
    /* 調整頁面頂部的布局 */
    .d-flex.justify-content-between.align-items-center.mb-4 {
        flex-direction: column;
        margin-bottom: 0.5rem !important;
    }
    
    .d-flex.justify-content-between.align-items-center.mb-4 h1 {
        margin-bottom: 1rem;
    }
    
    .d-flex.align-items-center {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
        margin-bottom: 1rem;
    }
    
    /* 按鈕間距調整 */
    .me-2 {
        margin-right: 0.25rem !important;
    }
    
    /* 卡片內容的響應式調整 */
    .col-md-6 {
        margin-bottom: 1rem;
    }
}