body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #0056b3;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.search-form {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.search-form input[type="text"] {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
}

.search-form button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

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

.file-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.file-item {
    padding: 15px;
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    transition: transform 0.2s;
}

.file-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.file-item a {
    text-decoration: none;
    color: #333;
}

.file-item h3 {
    margin: 0 0 5px 0;
    color: #007bff;
}

.tags .tag {
    display: inline-block;
    background-color: #e9ecef;
    color: #495057;
    padding: 5px 10px;
    border-radius: 12px;
    font-size: 0.8em;
    margin-right: 5px;
    margin-bottom: 5px;
}

.back-link {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 15px;
    background-color: #6c757d;
    color: white;
    text-decoration: none;
    border-radius: 4px;
}

.back-link:hover {
    background-color: #5a6268;
}

.no-results {
    color: #6c757d;
    text-align: center;
    padding: 20px;
    font-style: italic;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    gap: 10px;
}

.pagination a {
    display: inline-block;
    padding: 8px 16px;
    text-decoration: none;
    color: #007bff;
    background-color: #fff;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    transition: background-color 0.3s, color 0.3s;
}

.pagination a:hover {
    background-color: #e9ecef;
}

.pagination a.active {
    background-color: #007bff;
    color: #fff;
    border-color: #007bff;
}