:root {
            --c64-blue: #3c4c9e;
            --c64-light-blue: #7b8bc9;
            --c64-red: #8b4a4a;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            padding-bottom: 50px;
        }
        .navbar {
            background: linear-gradient(135deg, var(--c64-blue) 0%, var(--c64-light-blue) 100%);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.5rem;
        }
        .upload-card, .files-card {
            border: none;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            border-radius: 10px;
            margin-bottom: 20px;
        }
        .card-header {
            background: linear-gradient(135deg, var(--c64-blue) 0%, var(--c64-light-blue) 100%);
            color: white;
            font-weight: 600;
            border-radius: 10px 10px 0 0 !important;
        }
        .upload-area {
            border: 2px dashed #dee2e6;
            border-radius: 10px;
            padding: 50px 20px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
            background: #f8f9fa;
        }
        .upload-area:hover {
            border-color: var(--c64-blue);
            background: #e9ecef;
        }
        .upload-icon {
            font-size: 3rem;
            color: var(--c64-blue);
            margin-bottom: 15px;
        }
        .file-item {
            border: 1px solid #dee2e6;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 12px;
            background: white;
            transition: all 0.3s;
        }
        .file-item:hover {
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transform: translateY(-2px);
        }
        .file-icon {
            font-size: 2rem;
            color: var(--c64-blue);
        }
        .badge-format {
            background-color: var(--c64-light-blue);
            color: white;
        }
        .btn-download {
            background: linear-gradient(135deg, var(--c64-blue) 0%, var(--c64-light-blue) 100%);
            border: none;
            color: white;
        }
        .btn-download:hover {
            background: linear-gradient(135deg, var(--c64-light-blue) 0%, var(--c64-blue) 100%);
            color: white;
        }
        .stats-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 10px;
        }
        .alert-success {
            border-left: 4px solid #28a745;
        }
        .share-link-box {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 5px;
            padding: 10px;
        }
        .format-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
        }
        .format-badge {
            background: #e9ecef;
            color: #495057;
            padding: 5px 10px;
            border-radius: 5px;
            font-size: 0.85rem;
        }
        .no-files {
            text-align: center;
            padding: 50px 20px;
            color: #6c757d;
        }
        .file-list {
            max-height: 600px;
            overflow-y: auto;
        }
        .file-list::-webkit-scrollbar {
            width: 8px;
        }
        .file-list::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 10px;
        }
        .file-list::-webkit-scrollbar-thumb {
            background: var(--c64-blue);
            border-radius: 10px;
        }
        .file-list::-webkit-scrollbar-thumb:hover {
            background: var(--c64-light-blue);
        }


.card-body {
    padding-bottom: 0.25rem !important;
}
iframe {
    margin-bottom: 0 !important;
    display: block;
}
hr.my-4 {
    margin-bottom: 0.5rem !important;
}