body {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        .content-wrapper {
            margin-top: 75px;
            flex: 1 0 auto;
        }
        
        .section-heading {
            font-weight: 700;
            color: #0d6efd;
            margin-bottom: 2rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        
        .section-heading:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: #0d6efd;
        }
        
        .document-card {
            border: none;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
            height: 100%;
        }
        
        .document-card:hover {
            transform: translateY(-5px);
        }
        
        .document-icon {
            font-size: 1.5rem;
            color: #0d6efd;
            margin-bottom: 15px;
        }
        
        .document-list {
            list-style-type: none;
            padding-left: 0;
        }
        
        .document-list li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
        }
        
        .document-list li:last-child {
            border-bottom: none;
        }
        
        .document-list a {
            text-decoration: none;
            color: #212529;
            transition: color 0.2s ease;
            display: flex;
            align-items: center;
        }
        
        .document-list a:hover {
            color: #0d6efd;
        }
        
        .document-list i {
            margin-right: 10px;
            color: #6c757d;
        }
        
        .accordion-button:not(.collapsed) {
            background-color: #f8f9fa;
            color: #0d6efd;
        }
        
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: #0d6efd;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
        }
        
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        
        .back-to-top:hover {
            background-color: #0b5ed7;
            transform: translateY(-3px);
        }