.preview-area {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 1rem;
            max-height: 500px;
            overflow-y: auto;
            font-family: 'Segoe UI', 'Noto Sans', sans-serif;
            margin: 1.5rem 0;
        }
        .slide-card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            margin-bottom: 1rem;
            padding: 1rem;
            border-left: 4px solid #0d6efd;
        }
        .slide-title {
            font-weight: 700;
            color: #0d6efd;
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }
        .slide-content {
            white-space: pre-wrap;
            font-size: 0.85rem;
            line-height: 1.5;
            font-family: monospace;
            background: #fefefe;
            padding: 0.5rem;
            border-radius: 6px;
        }
        .upload-area {
            border: 2px dashed #adb5bd;
            border-radius: 16px;
            padding: 2rem;
            text-align: center;
            transition: all 0.2s;
            cursor: pointer;
            background-color: #fbfdff;
        }
        .upload-area:hover {
            border-color: #0d6efd;
            background-color: #f1f8ff;
        }
        .setting-group {
            background: #f8f9fc;
            padding: 1rem;
            border-radius: 12px;
            margin-bottom: 1rem;
        }
        .loader-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.6);
            z-index: 2000;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            backdrop-filter: blur(4px);
        }
        .badge-extract {
            background-color: #28a745;
            color: white;
        }