.pdf-md-preview-container {
            width: 100%;
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .pdf-md-output-box {
            background: #ffffff;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: var(--stitch-shadow-paper, 0 4px 20px rgba(0,0,0,0.06));
            border: 1px solid var(--border-color, #e2e8f0);
        }

        .pdf-md-output-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 0.75rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color, #e2e8f0);
        }

        .pdf-md-output-textarea {
            width: 100%;
            height: 320px;
            border: 1px solid var(--border-color, #e2e8f0);
            border-radius: 8px;
            padding: 0.85rem;
            font-family: var(--font-mono, 'JetBrains Mono', monospace);
            font-size: 0.85rem;
            line-height: 1.6;
            color: var(--text-main, #0f172a);
            background: #f8fafc;
            resize: vertical;
            outline: none;
        }

        .btn-copy-md {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 0.75rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: #f1f5f9;
            color: var(--text-main, #0f172a);
            border: 1px solid var(--border-color, #cbd5e1);
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .btn-copy-md:hover {
            background: #e2e8f0;
            color: var(--color-primary, #137BEC);
        }