.tool-page.file-renamer-page {
            --rename-accent: #4f46e5;
            --rename-accent-text: var(--indigo-text);
            --rename-accent-hover: #4338ca;
            --rename-soft: rgba(79, 70, 229, 0.09);
            --rename-mid: rgba(79, 70, 229, 0.22);
            --rename-strong: rgba(79, 70, 229, 0.42);
            --rename-workspace-height: 500px;
        }

        [data-theme="dark"] .tool-page.file-renamer-page {
            --rename-accent: #818cf8;
            --rename-accent-hover: #6366f1;
            --rename-soft: rgba(99, 102, 241, 0.14);
            --rename-mid: rgba(129, 140, 248, 0.28);
            --rename-strong: rgba(129, 140, 248, 0.5);
        }

        .file-renamer-page .nav-pill.active-rename {
            color: var(--rename-accent-text);
            background: var(--rename-soft);
            box-shadow: 0 2px 8px rgba(79, 70, 229, 0.16);
        }

        .file-renamer-page .renamer-workspace {
            min-height: 0;
        }

        .file-renamer-page .renamer-grid {
            grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
            min-height: 0;
        }

        .file-renamer-page .renamer-files-panel,
        .file-renamer-page .renamer-settings-panel {
            min-width: 0;
            padding: 18px;
            background: var(--container-bg);
            border: 1px solid var(--tool-surface-border, var(--border-color));
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow);
        }

        .file-renamer-page .renamer-files-panel {
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: stretch;
            justify-content: flex-start;
            overflow: hidden;
        }

        .file-renamer-page .renamer-panel-heading,
        .file-renamer-page .renamer-toolbar,
        .file-renamer-page .renamer-upload-actions,
        .file-renamer-page .renamer-list-summary,
        .file-renamer-page .renamer-action-row,
        .file-renamer-page .renamer-file-main,
        .file-renamer-page .renamer-file-name-row,
        .file-renamer-page .renamer-sample {
            display: flex;
            align-items: center;
        }

        .file-renamer-page .renamer-panel-heading {
            justify-content: space-between;
            gap: 12px;
        }

        .file-renamer-page h1,
        .file-renamer-page h2 {
            margin: 0;
            color: var(--text-color);
            font-size: 1.05rem;
            line-height: 1.3;
        }

        .file-renamer-page .renamer-count-badge {
            flex: 0 0 auto;
            padding: 5px 10px;
            color: var(--rename-accent-text);
            background: var(--rename-soft);
            border: 1px solid var(--rename-mid);
            border-radius: var(--radius-pill);
            font-size: 0.72rem;
            font-weight: 650;
        }

        .file-renamer-page .renamer-files-panel .renamer-drop-zone {
            flex: 0 0 150px;
            width: 100%;
            height: auto;
            min-height: 132px;
            padding: 16px;
            gap: 8px;
            border-color: var(--rename-mid);
        }

        .file-renamer-page .renamer-drop-zone:hover,
        .file-renamer-page .renamer-drop-zone.dragover {
            border-color: var(--rename-accent);
            background: var(--rename-soft);
        }

        .file-renamer-page .renamer-drop-zone .drop-zone-icon {
            width: 52px;
            height: 52px;
            color: var(--rename-accent);
            background: var(--rename-soft);
        }

        .file-renamer-page .renamer-drop-zone .icon-lg {
            font-size: 27px;
        }

        .file-renamer-page .renamer-drop-zone .drop-zone-title {
            font-size: 0.9rem;
        }

        .file-renamer-page .renamer-drop-zone .drop-zone-subtitle {
            font-size: 0.7rem;
        }

        .file-renamer-page .renamer-upload-actions {
            gap: 7px;
            margin-top: 2px;
        }

        .file-renamer-page .renamer-upload-button,
        .file-renamer-page .renamer-icon-button,
        .file-renamer-page .renamer-clear-button,
        .file-renamer-page .renamer-download-button {
            border: 0;
            font: inherit;
            cursor: pointer;
        }

        .file-renamer-page .renamer-upload-button {
            display: inline-flex;
            min-height: 34px;
            align-items: center;
            gap: 5px;
            padding: 7px 11px;
            color: var(--rename-accent-text);
            background: var(--container-bg);
            border: 1px solid var(--rename-mid);
            border-radius: 10px;
            font-size: 0.72rem;
            font-weight: 650;
        }

        .file-renamer-page .renamer-upload-button:hover {
            background: var(--rename-soft);
            border-color: var(--rename-accent);
        }

        .file-renamer-page .renamer-upload-button .material-symbols-outlined {
            font-size: 16px;
        }

        .file-renamer-page .renamer-toolbar {
            justify-content: space-between;
            gap: 10px;
        }

        .file-renamer-page .renamer-sort-wrap {
            display: grid;
            grid-template-columns: auto minmax(150px, 1fr);
            align-items: center;
            gap: 8px;
            min-width: 0;
        }

        .file-renamer-page .renamer-sort-wrap label,
        .file-renamer-page .renamer-field-label {
            color: var(--text-muted);
            font-size: var(--tool-settings-label-size);
            font-weight: var(--tool-settings-label-weight);
            letter-spacing: 0.04em;
            line-height: 1.3;
        }

        .file-renamer-page .renamer-sort,
        .file-renamer-page .renamer-input {
            width: 100%;
            color: var(--text-color);
            background: var(--container-bg);
            border: 1px solid var(--tool-control-border, var(--border-color));
            border-radius: 11px;
            font: inherit;
            font-size: 0.76rem;
            font-weight: 650;
        }

        .file-renamer-page .renamer-sort {
            height: 37px;
            padding: 7px 32px 7px 10px;
        }

        .file-renamer-page .renamer-clear-button {
            padding: 7px 9px;
            color: var(--text-muted);
            background: transparent;
            border-radius: 9px;
            font-size: 0.7rem;
            font-weight: 650;
        }

        .file-renamer-page .renamer-clear-button:hover:not(:disabled) {
            color: var(--red-text);
            background: var(--red-light);
        }

        .file-renamer-page .renamer-clear-button:disabled {
            opacity: 0.4;
            cursor: not-allowed;
        }

        .file-renamer-page .renamer-list-wrap {
            position: relative;
            flex: 1 1 auto;
            min-height: 250px;
            overflow: hidden;
            background: color-mix(in srgb, var(--bg-color) 68%, transparent);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            width: 100%;
        }

        .file-renamer-page .renamer-empty {
            position: absolute;
            inset: 0;
            display: grid;
            place-content: center;
            gap: 8px;
            padding: 24px;
            color: var(--text-muted);
            text-align: center;
            font-size: 0.76rem;
            font-weight: 700;
        }

        .file-renamer-page .renamer-empty[hidden] {
            display: none;
        }

        .file-renamer-page .renamer-empty .material-symbols-outlined {
            margin: 0 auto;
            color: var(--rename-accent);
            font-size: 34px;
            opacity: 0.72;
        }

        .file-renamer-page .renamer-file-list {
            height: 100%;
            margin: 0;
            padding: 8px;
            overflow-y: auto;
            list-style: none;
        }

        .file-renamer-page .renamer-file-item {
            display: grid;
            grid-template-columns: 28px minmax(0, 1fr) auto;
            align-items: center;
            gap: 8px;
            min-height: 55px;
            margin-bottom: 6px;
            padding: 7px 8px;
            background: var(--container-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            transition: border-color 0.16s ease, opacity 0.16s ease, transform 0.16s ease;
        }

        .file-renamer-page .renamer-file-item.is-dragging {
            opacity: 0.42;
        }

        .file-renamer-page .renamer-file-item.is-drag-target {
            border-color: var(--rename-accent);
            transform: translateY(2px);
        }

        .file-renamer-page .renamer-drag-handle {
            color: var(--text-muted);
            cursor: grab;
            user-select: none;
        }

        .file-renamer-page .renamer-drag-handle .material-symbols-outlined {
            font-size: 20px;
        }

        .file-renamer-page .renamer-file-main {
            position: relative;
            min-width: 0;
            padding-left: 36px;
            flex-direction: column;
            align-items: stretch;
            gap: 3px;
        }

        .file-renamer-page .renamer-file-preview {
            position: absolute;
            top: 50%;
            left: 0;
            display: grid;
            width: 28px;
            height: 28px;
            box-sizing: border-box;
            overflow: hidden;
            place-items: center;
            padding: calc(var(--tool-panel-gap) / 4);
            color: var(--rename-accent-text);
            background: var(--rename-soft);
            border: 1px solid var(--rename-mid);
            border-radius: 0;
            transform: translateY(-50%);
        }

        .file-renamer-page .renamer-file-preview img {
            display: block;
            width: auto;
            height: auto;
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            border-radius: 0;
        }

        .file-renamer-page .renamer-file-preview .material-symbols-outlined {
            font-size: 18px;
        }

        .file-renamer-page .renamer-file-preview [hidden] {
            display: none;
        }

        .file-renamer-page .renamer-file-list.is-card-view .renamer-file-main {
            padding-left: 74px;
        }

        .file-renamer-page .renamer-file-list.is-card-view .renamer-file-preview {
            width: 66px;
            height: 66px;
            border-radius: 0;
        }

        .file-renamer-page .renamer-file-list.is-card-view .renamer-file-preview .material-symbols-outlined {
            font-size: 28px;
        }

        .file-renamer-page .renamer-file-name-row {
            min-width: 0;
            gap: 7px;
        }

        .file-renamer-page .renamer-file-original,
        .file-renamer-page .renamer-file-output {
            min-width: 0;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            font-size: 0.74rem;
            font-weight: 750;
        }

        .file-renamer-page .renamer-file-original {
            color: var(--text-muted);
        }

        .file-renamer-page .renamer-file-output {
            color: var(--rename-accent-text);
        }

        .file-renamer-page .renamer-file-arrow {
            flex: 0 0 auto;
            color: var(--text-muted);
            font-size: 14px;
        }

        .file-renamer-page .renamer-file-meta {
            color: var(--text-muted);
            font-size: 0.64rem;
            font-weight: 650;
        }

        .file-renamer-page .renamer-file-actions {
            display: grid;
            grid-template-columns: repeat(3, 27px);
            gap: 2px;
        }

        .file-renamer-page .renamer-icon-button {
            display: grid;
            width: 27px;
            height: 27px;
            place-items: center;
            color: var(--text-muted);
            background: transparent;
            border-radius: 8px;
        }

        .file-renamer-page .renamer-icon-button:hover:not(:disabled) {
            color: var(--rename-accent);
            background: var(--rename-soft);
        }

        .file-renamer-page .renamer-icon-button.is-remove:hover {
            color: var(--red);
            background: var(--red-light);
        }

        .file-renamer-page .renamer-icon-button:disabled {
            opacity: 0.25;
            cursor: not-allowed;
        }

        .file-renamer-page .renamer-icon-button .material-symbols-outlined {
            font-size: 16px;
        }

        .file-renamer-page .renamer-list-summary {
            justify-content: space-between;
            gap: 12px;
            min-height: 20px;
            color: var(--text-muted);
            font-size: 0.68rem;
            font-weight: 700;
        }

        .file-renamer-page .renamer-settings-panel {
            display: flex;
            flex-direction: column;
            gap: 10px;
            overflow: hidden;
        }

        .file-renamer-page .renamer-settings-panel > h2 {
            font-size: var(--tool-settings-title-size);
            font-weight: var(--tool-settings-title-weight);
            line-height: 1.3;
            letter-spacing: -0.02em;
        }

        .file-renamer-page .renamer-settings-subtitle {
            margin-top: -7px;
            color: var(--text-muted);
            font-size: var(--tool-settings-subtitle-size);
            font-weight: var(--tool-settings-help-weight);
            line-height: 1.45;
        }

        .file-renamer-page .renamer-rule-card {
            display: grid;
            gap: 8px;
            padding: 11px;
            background: var(--rename-soft);
            border: 1px solid var(--rename-mid);
            border-radius: var(--radius);
        }

        .file-renamer-page .renamer-rule-title {
            display: flex;
            align-items: center;
            gap: 7px;
            color: var(--rename-accent-text);
            font-size: var(--tool-settings-control-size);
            font-weight: var(--tool-settings-control-weight);
        }

        .file-renamer-page .renamer-rule-title .material-symbols-outlined {
            font-size: 18px;
        }

        .file-renamer-page .renamer-rule-description {
            color: var(--text-muted);
            font-size: var(--tool-settings-help-size);
            font-weight: var(--tool-settings-help-weight);
            line-height: 1.45;
        }

        .file-renamer-page .renamer-field {
            display: grid;
            align-content: start;
            gap: 6px;
        }

        .file-renamer-page .renamer-fields-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 10px;
        }

        .file-renamer-page .renamer-label-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 8px;
            min-height: 34px;
        }

        .file-renamer-page .renamer-help {
            position: relative;
            display: inline-grid;
            place-items: center;
            color: var(--text-muted);
            cursor: help;
        }

        .file-renamer-page .renamer-help .material-symbols-outlined {
            font-size: 17px;
        }

        .file-renamer-page .renamer-tooltip {
            position: absolute;
            z-index: 4;
            right: 0;
            bottom: calc(100% + 8px);
            width: 232px;
            padding: 9px 10px;
            color: #fff;
            background: #25253a;
            border-radius: 9px;
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.2);
            font-size: var(--tool-settings-help-size);
            font-weight: var(--tool-settings-help-weight);
            line-height: 1.45;
            opacity: 0;
            pointer-events: none;
            transform: translateY(3px);
            transition: opacity 0.15s ease, transform 0.15s ease;
        }

        .file-renamer-page .renamer-help:hover .renamer-tooltip,
        .file-renamer-page .renamer-help:focus .renamer-tooltip {
            opacity: 1;
            transform: translateY(0);
        }

        .file-renamer-page .renamer-input {
            height: 42px;
            padding: 9px 11px;
        }

        .file-renamer-page .renamer-input:focus,
        .file-renamer-page .renamer-sort:focus {
            outline: 0;
            border-color: var(--rename-accent);
            box-shadow: 0 0 0 3px var(--rename-soft);
        }

        .file-renamer-page .renamer-input.is-invalid {
            border-color: var(--red);
            box-shadow: 0 0 0 3px var(--red-light);
        }

        .file-renamer-page .renamer-error {
            min-height: 15px;
            color: var(--text-muted);
            font-size: var(--tool-settings-help-size);
            font-weight: var(--tool-settings-help-weight);
            line-height: 1.45;
        }

        .file-renamer-page .renamer-error {
            color: var(--red-text);
        }

        .file-renamer-page .renamer-error:empty {
            display: none;
        }

        .file-renamer-page .renamer-sample {
            justify-content: space-between;
            gap: 8px;
            padding: 10px 11px;
            background: color-mix(in srgb, var(--container-bg) 70%, transparent);
            border-radius: 11px;
        }

        .file-renamer-page .renamer-sample-label {
            color: var(--text-muted);
            font-size: var(--tool-settings-help-size);
            font-weight: var(--tool-settings-label-weight);
        }

        .file-renamer-page .renamer-sample-value {
            min-width: 0;
            overflow: hidden;
            color: var(--rename-accent-text);
            text-overflow: ellipsis;
            white-space: nowrap;
            font-size: var(--tool-settings-control-size);
            font-weight: var(--tool-settings-control-weight);
        }

        .file-renamer-page .renamer-validation {
            display: flex;
            align-items: flex-start;
            gap: 7px;
            min-height: 44px;
            padding: 10px 11px;
            color: var(--text-muted);
            background: color-mix(in srgb, var(--bg-color) 60%, transparent);
            border: 1px solid var(--border-color);
            border-radius: 11px;
            font-size: var(--tool-settings-help-size);
            font-weight: var(--tool-settings-help-weight);
            line-height: 1.45;
        }

        .file-renamer-page .renamer-validation.is-valid {
            color: var(--green-text);
            background: var(--green-light);
            border-color: var(--green-mid);
        }

        .file-renamer-page .renamer-validation.is-error {
            color: var(--red-text);
            background: var(--red-light);
            border-color: var(--red-mid);
        }

        .file-renamer-page .renamer-validation .material-symbols-outlined {
            flex: 0 0 auto;
            margin-top: 1px;
            font-size: 17px;
        }

        .file-renamer-page .renamer-download-area {
            margin-top: auto;
            padding-top: 2px;
        }

        .file-renamer-page .renamer-download-button {
            display: inline-flex;
            width: 100%;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            gap: 7px;
            padding: 10px 14px;
            color: #fff;
            background: var(--green-fill);
            border: 1px solid var(--green);
            border-radius: var(--radius);
            box-shadow: 0 9px 20px -7px color-mix(in srgb, var(--green) 52%, transparent);
            font-size: 0.82rem;
            font-weight: 850;
        }

        .file-renamer-page .renamer-download-button:hover:not(:disabled) {
            background: var(--green-fill-hover);
            border-color: var(--green);
        }

        .file-renamer-page .renamer-download-button:focus-visible {
            outline: 3px solid var(--green);
            outline-offset: 2px;
        }

        .file-renamer-page .renamer-download-button:disabled {
            color: rgba(255, 255, 255, 0.72);
            background: rgba(34, 197, 94, 0.38);
            border-color: transparent;
            box-shadow: none;
            cursor: not-allowed;
        }

        .file-renamer-page .renamer-download-button .material-symbols-outlined {
            font-size: 19px;
        }

        .file-renamer-page .renamer-status {
            min-height: 17px;
            margin-top: 6px;
            color: var(--text-muted);
            text-align: center;
            font-size: var(--tool-settings-help-size);
            font-weight: var(--tool-settings-help-weight);
            line-height: 1.45;
        }

        .file-renamer-page .renamer-status.is-success {
            color: var(--green-text);
        }

        @media (min-width: 769px) {
            body.tool-page.file-renamer-page .site-header,
            .file-renamer-page .renamer-workspace {
                width: min(calc(100% - (var(--tool-page-gutter) * 2)), var(--tool-page-width)) !important;
                max-width: none !important;
                margin-inline: auto;
                box-sizing: border-box;
            }

            .file-renamer-page .renamer-grid,
            .file-renamer-page .renamer-files-panel,
            .file-renamer-page .renamer-settings-panel {
                height: var(--rename-workspace-height) !important;
                min-height: 0;
                box-sizing: border-box;
            }

            .file-renamer-page .renamer-list-wrap {
                min-height: 0;
            }
        }

        @media (max-width: 768px) {
            .file-renamer-page .renamer-grid {
                grid-template-columns: 1fr;
            }

            .file-renamer-page .renamer-files-panel {
                min-height: 620px;
            }

            .file-renamer-page .renamer-settings-panel {
                min-height: 520px;
            }

            .file-renamer-page .renamer-fields-grid {
                grid-template-columns: 1fr;
            }

            .file-renamer-page .renamer-label-row {
                min-height: 0;
            }
        }

        @media (max-width: 520px) {
            .file-renamer-page .renamer-toolbar {
                align-items: stretch;
                flex-direction: column;
            }

            .file-renamer-page .renamer-file-item {
                grid-template-columns: 24px minmax(0, 1fr) auto;
            }

            .file-renamer-page .renamer-file-name-row {
                align-items: flex-start;
                flex-direction: column;
                gap: 1px;
            }

            .file-renamer-page .renamer-file-arrow {
                display: none;
            }

        }