body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background: #f5f5f5;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
h1, h2 {
    color: #333;
}
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}
.form-group input[type="text"],
.form-group input[type="file"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 14px;
}
.btn.small {
    padding: 5px 10px;
    font-size: 12px;
}
.btn.primary {
    background: #28a745;
}
.btn:hover {
    opacity: 0.9;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table th, table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}
table th {
    background: #f2f2f2;
}
.upload-section, .list-section {
    margin-bottom: 40px;
}