body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

.upload-section {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
    padding: 20px;
    border: 2px dashed #ddd;
    border-radius: 8px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}

.hidden {
    display: none;
}

#loading {
    text-align: center;
    color: #666;
    margin: 20px 0;
}

#error {
    color: red;
    text-align: center;
    margin: 20px 0;
}

.summary-card {
    background: #e9ecef;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.tabs {
    display: flex;
    border-bottom: 1px solid #ddd;
    margin-bottom: 20px;
}

.tab-btn {
    background: none;
    color: #666;
    border-radius: 0;
    padding: 10px 20px;
}

.tab-btn.active {
    color: #007bff;
    border-bottom: 2px solid #007bff;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

pre {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
    white-space: pre-wrap;
}

.field-row {
    display: flex;
    border-bottom: 1px solid #eee;
    padding: 8px 0;
}

.field-label {
    font-weight: bold;
    width: 200px;
    color: #555;
}

.field-value {
    flex: 1;
}