.sample-request .card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            margin-bottom: 2rem;
        }

         .sample-request .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
        }

         .sample-request .card-header {
            background: linear-gradient(135deg, #28a745, #20c997);
            color: white;
            border-radius: 15px 15px 0 0 !important;
            padding: 1.5rem;
            border: none;
        }

         .sample-request .card-title {
            margin: 0;
            font-size: 1.5rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #fff;
        }

         .sample-request .form-label {
            font-weight: 600;
            color: #495057;
            margin-bottom: 0.5rem;
        }

         .sample-request .form-control, .form-select {
            border: 2px solid #e9ecef;
            border-radius: 10px;
            padding: 0.75rem 1rem;
            transition: all 0.3s ease;
        }

         .sample-request .form-control:focus, .form-select:focus {
            border-color: #28a745;
            box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
        }

         .sample-request .btn-primary {
            background: linear-gradient(135deg, #28a745, #20c997);
            border: none;
            border-radius: 25px;
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }

         .sample-request .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(40, 167, 69, 0.4);
        }

         .sample-request .request-item {
            background: white;
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
        }

         .sample-request .request-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.12);
        }

         .sample-request .request-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 1rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

         .sample-request .request-info {
            flex: 1;
        }

         .sample-request .request-id {
            font-size: 0.9rem;
            color: #6c757d;
            font-weight: 500;
        }

         .sample-request .request-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #212529;
            margin: 0.5rem 0;
        }

         .sample-request .request-meta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }

         .sample-request .meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: #6c757d;
        }

         .sample-request .status-badge {
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
        }

         .sample-request .status-pending {
            background-color: #fff3cd;
            color: #856404;
        }

         .sample-request .status-approved {
            background-color: #d1e7dd;
            color: #0f5132;
        }

         .sample-request .status-rejected {
            background-color: #f8d7da;
            color: #842029;
        }

         .sample-request .status-processing {
            background-color: #cff4fc;
            color: #055160;
        }

         .sample-request .request-details {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 1rem;
            margin: 1rem 0;
        }

         .sample-request .detail-row {
            display: flex;
            margin-bottom: 0.5rem;
        }

         .sample-request .detail-label {
            font-weight: 600;
            min-width: 120px;
            color: #495057;
        }

         .sample-request .detail-value {
            color: #212529;
        }

         .sample-request .comment-system {
            border-top: 2px solid #e9ecef;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
        }

         .sample-request .comment-item {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 1rem;
            margin-bottom: 1rem;
            border-left: 4px solid #28a745;
        }

         .sample-request .comment-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 0.5rem;
        }

         .sample-request .comment-author {
            font-weight: 600;
            color: #28a745;
        }

         .sample-request .comment-date {
            font-size: 0.8rem;
            color: #6c757d;
        }

         .sample-request .comment-text {
            color: #495057;
            line-height: 1.6;
            margin: 0;
        }

         .sample-request .comment-form {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 1rem;
            margin-top: 1rem;
        }

         .sample-request .admin-actions {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

         .sample-request .btn-sm {
            padding: 0.375rem 0.75rem;
            font-size: 0.875rem;
            border-radius: 15px;
        }

         .sample-request .btn-success {
            background-color: #198754;
            border-color: #198754;
        }

         .sample-request .btn-danger {
            background-color: #dc3545;
            border-color: #dc3545;
        }

         .sample-request .btn-info {
            background-color: #0dcaf0;
            border-color: #0dcaf0;
        }

        .sample-request  .stats-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-bottom: 2rem;
        }

         .sample-request .stat-card {
            background: white;
            border-radius: 15px;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
        }

         .sample-request .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.12);
        }

         .sample-request .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: #28a745;
        }

         .sample-request .stat-label {
            color: #6c757d;
            font-weight: 500;
        }

         .sample-request .filter-section {
            background: white;
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
        }

         .sample-request .filter-row {
            display: flex;
            gap: 1rem;
            align-items: end;
            flex-wrap: wrap;
        }

         .sample-request .filter-group {
            flex: 1;
            min-width: 200px;
        }

        @media (max-width: 768px) {
            .sample-request  .request-header {
                flex-direction: column;
                align-items: stretch;
            }

             .sample-request .request-meta {
                flex-direction: column;
                gap: 0.5rem;
            }

             .sample-request .admin-actions {
                justify-content: center;
            }

             .sample-request .filter-row {
                flex-direction: column;
            }

             .sample-request .filter-group {
                min-width: 100%;
            }
        }

         .sample-request .toggle-section {
            margin-bottom: 2rem;
            text-align: center;
        }

         .sample-request .toggle-btn {
            background: #28a745;
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 25px;
            margin: 0 0.5rem;
            transition: all 0.3s ease;
        }

         .sample-request .toggle-btn:hover {
            background: #20c997;
            transform: translateY(-2px);
        }

         .sample-request .toggle-btn.active {
            background: #20c997;
            box-shadow: 0 5px 15px rgba(32, 201, 151, 0.4);
        }

         .sample-request .section {
            display: none;
        }

         .sample-request .section.active {
            display: block;
        }