/* General Styles */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

.upload-materials-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

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

.page-header h1 {
    font-size: 2.5em;
    color: #333;
}

.page-header p {
    font-size: 1.2em;
    color: #666;
}

/* Form Styles */
.upload-form-section {
    margin-bottom: 30px;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fff;
    max-width: 600px;
    margin: 0 auto;
}

.upload-form label {
    font-size: 1.1em;
    font-weight: bold;
    color: #333;
}

.upload-form select,
.upload-form input[type="file"] {
    padding: 10px;
    font-size: 1em;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.upload-button {
    padding: 10px 20px;
    font-size: 1.1em;
    color: #fff;
    background-color: #007bff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
}

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

/* Messages Section */
.messages-section {
    margin: 20px auto;
    max-width: 600px;
    background-color: #fefefe;
    border: 1px solid #ddd;
    padding: 10px 20px;
    border-radius: 8px;
}

.messages-list {
    list-style: none;
    padding: 0;
}

.message {
    padding: 5px 0;
    font-size: 1em;
    color: #333;
}

/* Uploaded Materials Table */
.uploaded-materials-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
}

.uploaded-materials-table th,
.uploaded-materials-table td {
    padding: 10px;
    text-align: left;
    border: 1px solid #ddd;
}

.uploaded-materials-table th {
    background-color: #f4f4f4;
    font-weight: bold;
    color: #333;
}

.uploaded-materials-table td a {
    color: #007bff;
    text-decoration: none;
}

.uploaded-materials-table td a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .upload-form {
        padding: 10px;
    }

    .page-header h1 {
        font-size: 2em;
    }
}