/* Keep the workspace in one column. */
        .compress-layout {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .side-panel {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .quality-panel {
            background: var(--container-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 28px;
        }

        .quality-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 24px;
        }

        .quality-header h3 {
            font-size: 1.25rem;
            font-weight: 800;
        }

        .quality-header .subtitle {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .quality-badge {
            background: var(--primary-light);
            color: var(--primary-text);
            font-size: 1.125rem;
            font-weight: 900;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
        }

        .slider-labels {
            display: flex;
            justify-content: space-between;
            margin-top: 12px;
            font-size: 0.625rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--text-muted);
            opacity: 0.5;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .format-row {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .action-row {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }

        .action-row .btn {
            flex: 1;
        }

        .cmp-preview-area {
            display: none;
            min-height: 0;
            flex-direction: column;
            gap: 12px;
        }

        .cmp-preview-area.show { display: flex; }

        .cmp-preview-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 12px;
        }

        .cmp-preview-card {
            min-width: 0;
            padding: 14px;
            text-align: center;
            background: var(--container-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
        }

        .cmp-preview-card .label-sm { margin-bottom: 8px; }

        .cmp-preview-empty {
            display: grid;
            place-items: center;
            color: var(--text-muted);
            font-size: 0.78rem;
            font-weight: 600;
        }

        .cmp-preview-card.has-result .cmp-preview-empty { display: none; }
        .cmp-preview-card.has-result #cmpCompressedPreview { display: block !important; }

        .cmp-file-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: 0;
            padding: 10px 12px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            background: var(--container-bg);
            color: var(--text-muted);
            font-size: 0.78rem;
            font-weight: 650;
        }

        #cmpFileName {
            min-width: 0;
            flex: 1;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        #cmpFileMeta { flex: 0 0 auto; }

        .cmp-file-remove {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            margin-left: 2px;
            padding: 0;
            flex: 0 0 auto;
            color: var(--red);
            background: transparent;
            border: 0;
            border-radius: 50%;
            cursor: pointer;
        }

        .cmp-file-remove:hover { background: var(--red-light); }

        .compress-page .tool-batch-panel {
            --tool-batch-accent: var(--yellow);
            --tool-batch-text: var(--yellow-text);
            --tool-batch-soft: var(--yellow-light);
            --tool-batch-border: var(--yellow-mid);
        }

        .compress-page .tool-left.is-batch-mode {
            align-items: stretch;
        }

        @media (min-width: 769px) {
            .compress-page .tool-page-container,
            .compress-page .tool-layout-grid {
                flex: 0 0 auto;
            }

            .compress-page .tool-layout-grid {
                height: auto;
                min-height: var(--tool-workspace-height);
                align-items: stretch;
            }

            .compress-page .tool-layout-grid > .tool-left,
            .compress-page .tool-layout-grid > .tool-right {
                height: auto;
                min-height: 0;
                box-sizing: border-box;
            }

            .compress-page .tool-left {
                overflow: visible;
                justify-content: flex-start;
            }

            .compress-page .tool-left .drop-zone {
                flex: 1 1 0;
                height: 100%;
                min-height: 0;
            }

            .compress-page .cmp-preview-area.show {
                flex: 1 1 auto;
                width: 100%;
                min-height: 0;
                justify-content: flex-start;
            }

            .compress-page .cmp-preview-grid {
                width: 100%;
                align-items: stretch;
            }

            .compress-page .tool-right {
                padding-right: 0;
                overflow: visible;
            }

            .compress-page .tool-right > .options-panel {
                display: flex;
                flex: 1 1 auto;
                flex-direction: column;
                height: auto;
                min-height: 0;
                overflow: visible;
            }

            .compress-page .options-panel .opt-group {
                margin-top: 8px;
            }

            .compress-page .tool-format-option {
                height: 38px;
            }

            .compress-page .stats-grid {
                gap: 8px !important;
                margin-top: 24px !important;
            }

            .compress-page .stat-box {
                min-width: 0;
                padding: 9px 7px;
                border-radius: var(--radius-lg);
            }

            .compress-page .stat-box:hover {
                transform: none;
                box-shadow: none;
            }

            .compress-page .stat-box .stat-icon {
                width: 32px;
                height: 32px;
                margin-bottom: 4px;
            }

            .compress-page .stat-box .stat-icon .material-symbols-outlined {
                font-size: 18px !important;
            }

            .compress-page .stat-box .stat-label {
                margin-bottom: 2px;
                font-size: 0.56rem;
            }

            .compress-page .stat-box .stat-value {
                font-size: 0.92rem;
                line-height: 1.15;
                white-space: nowrap;
            }

            .compress-page .action-row {
                gap: 10px !important;
                margin-top: auto !important;
                padding-top: 24px;
            }

            .compress-page .action-row .btn {
                min-height: 44px;
                height: 44px;
                padding: 8px 10px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 600px) {
            .cmp-preview-grid { grid-template-columns: 1fr; }
        }