body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f4f4f4;
    color: #333;
}

.container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.main-title {
    color: #fff;
    text-align: center;
    padding: 15px 0;
    margin-bottom: 25px;
    border-radius: 5px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.section-title {
    color: #333;
    text-align: left;
    margin-top: 30px;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 2px solid #eee;
}

form {
    margin-bottom: 20px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #f9f9f9;
}

form input[type="file"] {
    margin-bottom: 10px;
}

form input[type="submit"] {
    background-color: #5cb85c;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
}

form input[type="submit"]:hover {
    background-color: #4cae4c;
}


table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f0f0f0;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

a.button,
button.delete-btn {
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    margin-right: 5px;
    color: white;
    cursor: pointer;
    border: none;
}

a.view-btn {
    background-color: #007bff;
}

a.view-btn:hover {
    background-color: #0056b3;
}

button.delete-btn {
    background-color: #dc3545;
}

button.delete-btn:hover {
    background-color: #c82333;
}

.message {
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
}

.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

#uploadProgressContainer {
    width: 100%;
    background-color: #f3f3f3;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-top: 15px;
}

#progressBar {
    height: 24px;
    background-color: #4CAF50;
    text-align: center;
    line-height: 24px;
    color: white;
    font-size: 0.9em;
    border-radius: 3px;
    transition: width 0.3s ease-in-out;
}

#uploadStatusMessage {
    margin-top: 10px;
    font-size: 0.95em;
}