:root {
            --primary-color: #000000;
            --secondary-color: #333333;
            --accent-color: #000000;
            --light-bg: #f8f9fa;
            --border-color: #dee2e6;
            --sidebar-width: 340px;
            --viewer-surface: #ebebeb;
        }

        html {
            margin: 0;
            padding: 0;
            min-height: 100%;
            background-color: var(--light-bg);
            max-width: 100%;
            width: 100%;
        }

        html:not(.itqan-editor-active) { overflow-x: visible; }

        body,
        body.bg-light-subtle {
            margin: 0;
            padding: 0;
            min-height: 100vh;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--light-bg) !important;
        }

        html:not(.itqan-editor-active) body.bg-light-subtle {
            overflow-x: visible;
            overflow-y: auto;
        }

        html.itqan-editor-active { height: 100%; overflow: hidden; }
        html.itqan-editor-active body.bg-light-subtle {
            overflow: hidden !important;
            height: 100%;
            max-height: 100dvh;
        }
        html.itqan-editor-active nav.navbar.navbar-expand-xl.navbar-dark.bg-dark {
            position: sticky;
            top: 0;
            z-index: 1040;
        }
        html.itqan-editor-active .navbar .dropdown-menu { z-index: 1060 !important; }
        html.itqan-editor-active .nav-dropdown-wrapper { z-index: 1045; }
        html.itqan-editor-active .nav-dropdown-menu { z-index: 1050; }
        @media (min-width: 1200px) {
            html.itqan-editor-active .navbar.navbar-expand-xl #navbarNav.collapse.navbar-collapse {
                max-height: none !important;
                overflow: visible !important;
            }
        }

        .upload-area {
            position: relative;
            cursor: pointer;
            isolation: isolate;
            transition: background-color 0.3s ease, border-color 0.3s ease;
            border: 2px dashed #ced4da;
            border-radius: 12px;
            background: var(--light-bg, #f8f9fa);
            min-height: auto;
        }
        .upload-area:hover,
        .upload-area.dragover {
            background-color: #eef0f2;
            border-color: #6b7280 !important;
        }

        #dropArea,
        .upload-area.card {
            overflow: visible;
            max-width: 100%;
            background-color: #f8f9fa !important;
            background: #f8f9fa !important;
            box-shadow: none !important;
            border: 2px dashed #ced4da !important;
        }
        .container.my-5 > .row.justify-content-center > .col-lg-8 { min-width: 0; }

        #pptUpload {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            opacity: 0;
            cursor: pointer;
            z-index: 10;
        }

        .pdf-viewer-container,
        .docx-viewer-container {
            border: 1px solid #dee2e6;
            border-radius: 8px;
            background: #f8f9fa;
            padding: 25px;
            max-height: 800px;
            overflow-x: hidden;
            overflow-y: auto;
        }

        .pdf-grid,
        .docx-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 15px;
        }

        /* Center leftover thumbnails (same as merge / Word→PDF). */
        html.itqan-editor-active #pagePreview .pdf-grid {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            justify-content: center;
            justify-items: center;
        }
        html.itqan-editor-active #pagePreview .pdf-thumbnail-wrapper {
            width: 100%;
            max-width: 240px;
        }
        @media (max-width: 1199.98px) {
            html.itqan-editor-active #pagePreview .pdf-grid {
                grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
            }
        }
        @media (max-width: 576px) {
            html.itqan-editor-active #pagePreview .pdf-grid {
                grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
            }
        }

        .pdf-thumbnail-wrapper,
        .docx-thumbnail-wrapper {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: transform 0.3s ease;
            cursor: move;
            padding: 10px;
            border-radius: 8px;
            background: white;
            border: 2px solid transparent;
            box-sizing: border-box;
        }
        .pdf-thumbnail-wrapper:hover,
        .docx-thumbnail-wrapper:hover { border-color: #dee2e6; background: #f8f9fa; }
        .pdf-thumbnail-wrapper.dragging,
        .docx-thumbnail-wrapper.dragging { opacity: 0.5; border-color: #000; }
        .pdf-thumbnail-wrapper.drag-over,
        .docx-thumbnail-wrapper.drag-over { border-color: #090909ff; background: #f0f0f0; transform: scale(1.05); }
        .pdf-thumbnail-wrapper.active-file,
        .docx-thumbnail-wrapper.active-file { border-color: #000; background: #f5f5f5; }

        .pdf-thumbnail-wrapper.page-marked-delete,
        .docx-thumbnail-wrapper.page-marked-delete { border-color: rgba(222, 226, 230, 0.95); background: #fff; }
        .pdf-thumbnail-wrapper.page-marked-delete .pdf-thumbnail,
        .docx-thumbnail-wrapper.page-marked-delete .docx-thumbnail { border-color: rgba(224, 49, 49, 0.4); }

        .pdf-delete-overlay,
        .docx-delete-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            pointer-events: none;
            background: rgba(255, 255, 255, 0.42);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.22s ease, visibility 0.22s ease;
        }
        .pdf-thumbnail-wrapper.page-marked-delete .pdf-delete-overlay,
        .docx-thumbnail-wrapper.page-marked-delete .docx-delete-overlay { opacity: 1; visibility: visible; }
        .pdf-thumbnail-wrapper.page-marked-delete .pdf-thumbnail .word-logo-center i,
        .docx-thumbnail-wrapper.page-marked-delete .docx-thumbnail .word-logo-center i { filter: grayscale(0.45) brightness(0.9); opacity: 0.52; }
        .pdf-delete-overlay i,
        .docx-delete-overlay i { font-size: clamp(2.25rem, 10vw, 3.75rem); color: #E03131; line-height: 1; filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.18)); }

        .pdf-thumbnail-buttons,
        .docx-thumbnail-buttons { display: flex; gap: 6px; justify-content: center; }

        .pdf-action-btn,
        .docx-action-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid #dee2e6;
            background: white;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
            font-size: 14px;
        }
        .pdf-action-btn.delete,
        .docx-action-btn.delete { color: #dc3545; }
        .pdf-action-btn.delete:hover,
        .docx-action-btn.delete:hover { background: #dc3545; color: white; border-color: #dc3545; }
        .pdf-action-btn.rotate { color: #1abc9c; }
        .pdf-action-btn.rotate:hover { background: #1abc9c; color: white; border-color: #1abc9c; }

        .pdf-thumbnail,
        .docx-thumbnail {
            background: white;
            border: 1px solid #dee2e6;
            border-radius: 6px;
            padding: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            width: 100%;
            aspect-ratio: 8.5 / 11;
            min-height: 220px;
        }
        .pdf-thumbnail:hover,
        .docx-thumbnail:hover { box-shadow: 0 2px 6px rgba(0,0,0,0.15); border-color: #000; }
        .pdf-thumbnail .word-logo-center,
        .docx-thumbnail .word-logo-center {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            height: 100%;
            pointer-events: none;
            transition: transform 0.25s ease;
        }
        .pdf-thumbnail .word-logo-center i,
        .docx-thumbnail .word-logo-center i {
            font-size: clamp(3.2rem, 11vw, 5.2rem);
            color: #ff8c00;
            line-height: 1;
        }

        .pdf-page-name,
        .docx-page-name {
            text-align: center;
            font-size: 0.75rem;
            color: #666;
            word-break: break-word;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .cloud-upload-btn {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid #dee2e6;
            background: white;
            transition: all 0.3s;
            cursor: pointer;
            padding: 0;
            position: relative;
            z-index: 100;
        }
        .cloud-upload-btn:hover { border-color: #000; transform: scale(1.1); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15); }

        .cloud-icon { position: relative; display: inline-block; transition: transform 0.3s ease; z-index: 101; }
        .cloud-tooltip {
            visibility: hidden;
            width: 140px;
            background-color: #333;
            color: #fff;
            text-align: center;
            border-radius: 6px;
            padding: 8px 5px;
            position: absolute;
            z-index: 1000;
            bottom: 125%;
            left: 50%;
            margin-left: -70px;
            opacity: 0;
            transition: opacity 0.3s;
            font-size: 12px;
            white-space: nowrap;
            pointer-events: none;
        }
        .cloud-tooltip::after {
            content: "";
            position: absolute;
            top: 100%;
            left: 50%;
            margin-left: -5px;
            border-width: 5px;
            border-style: solid;
            border-color: #333 transparent transparent transparent;
        }
        .cloud-icon:hover .cloud-tooltip { visibility: visible; opacity: 1; }

        #adContainer {
            margin: 20px 0;
            text-align: center;
            overflow: hidden;
            max-width: 100%;
            box-sizing: border-box;
        }
        #adContainer ins.adsbygoogle {
            display: block !important;
            width: min(100%, 728px) !important;
            max-width: 100% !important;
            margin-left: auto !important;
            margin-right: auto !important;
        }

        .main-editor {
            display: none;
            height: calc(100vh - 60px);
            flex-direction: row;
            min-width: 0;
            min-height: 0;
        }
        html.itqan-editor-active #editor-section.main-editor {
            display: flex !important;
            position: fixed;
            left: 0;
            right: 0;
            bottom: 0;
            top: var(--itqan-editor-top, 72px);
            height: auto !important;
            min-height: 0 !important;
            box-sizing: border-box;
            z-index: 1;
        }
        #editor-section .sidebar {
            width: var(--sidebar-width);
            min-width: var(--sidebar-width);
            flex: 0 0 var(--sidebar-width);
            background: #fff;
            border-left: 1px solid #ddd;
            display: flex;
            flex-direction: column;
            position: relative;
            z-index: 1;
            overflow: hidden;
            min-height: 0;
            height: 100%;
        }
        #editor-section .sidebar .merge-sidebar-body {
            padding-top: 0;
            flex: 1 1 auto;
            min-height: 0;
            overflow-x: hidden;
            overflow-y: auto;
            overscroll-behavior-y: contain;
        }
        .merge-sidebar-header {
            flex-shrink: 0;
            padding: 16px 18px;
            border-bottom: 1px solid #eee;
            font-weight: 700;
            font-size: 17px;
            line-height: 1.35;
            background: #fff;
            position: relative;
            z-index: 2;
            text-align: center;
            color: #222;
        }
        .merge-sidebar-body { padding: 16px 18px 12px; display: flex; flex-direction: column; gap: 16px; }
        #editor-section .sidebar > .merge-sidebar-footer {
            flex-shrink: 0;
            margin-top: auto;
            padding: 14px 18px 18px;
            border-top: 1px solid #eee;
            background: #fff;
            z-index: 2;
        }
        .merge-sidebar-section { display: flex; flex-direction: column; align-items: center; gap: 10px; }
        .merge-sidebar-label { font-size: 0.8rem; font-weight: 700; color: #666; text-align: center; margin: 0; }
        #editor-section .merge-cloud-stack {
            display: flex;
            flex-direction: row;
            gap: 12px;
            align-items: center;
            justify-content: center;
            padding: 12px 14px;
            background: #f8f9fa;
            border: 1px dashed #dee2e6;
            border-radius: 10px;
            width: 100%;
            box-sizing: border-box;
        }
        .merge-stats-sidebar.stats-card {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin: 0;
            width: 100%;
            background: transparent;
            border: none;
            padding: 0;
        }
        .merge-stats-sidebar .merge-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .merge-stats-sidebar .merge-stat-item:last-child { border-bottom: 0; }
        .merge-stats-sidebar .merge-stat-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: #111;
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
        }
        .merge-stats-sidebar .merge-stat-text strong { display: block; font-size: 0.95rem; line-height: 1.15; }
        .merge-stats-sidebar .merge-stat-text small { font-size: 0.72rem; color: #888; }

        .merge-sidebar-btn-clear {
            width: 100%;
            padding: 10px 14px;
            border-radius: 10px;
            border: 1px solid #ddd;
            background: #f5f5f5;
            color: #444;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s, border-color 0.2s;
        }
        .merge-sidebar-btn-clear:hover { background: #eee; border-color: #bbb; color: #222; }

        .btn-finish {
            background: #000;
            color: #fff;
            width: 100%;
            border: none;
            padding: 15px;
            font-size: 18px;
            font-weight: 700;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .btn-finish:hover:not(:disabled) { background: #222; color: #fff; }
        .btn-finish:disabled { opacity: 0.55; cursor: not-allowed; }

        .viewer-container {
            flex: 1 1 auto;
            min-width: 0;
            min-height: 0;
            background: var(--viewer-surface);
            overflow: hidden;
            padding: 0 12px 12px;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .viewer-container #adContainerViewer {
            margin-top: 16px;
            flex-shrink: 0;
            text-align: center;
        }
        .viewer-container #adContainerViewer ins.adsbygoogle {
            display: inline-block !important;
            width: min(100%, 728px) !important;
            max-width: 100% !important;
            margin-left: auto !important;
            margin-right: auto !important;
        }
        .files-bar {
            flex-shrink: 0;
            padding: 8px 12px 12px;
            background: var(--viewer-surface);
            border-bottom: none;
        }
        .files-bar__inner {
            display: flex;
            flex-direction: row;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 6px 10px;
            width: 100%;
            max-width: 100%;
            box-sizing: border-box;
        }
        .files-bar .file-pill {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #ffffff;
            border: 1px solid #e0e0e0;
            border-radius: 999px;
            padding: 6px 14px 6px 10px;
            box-shadow: 0 1px 4px rgba(0,0,0,0.06);
            min-width: min(100%, 320px);
            max-width: min(100%, 520px);
        }
        .files-bar .file-pill__select {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            outline: none;
            text-align: right;
            direction: rtl;
            min-width: 0;
            max-width: 100%;
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            padding-inline-end: 4px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: left 4px center;
            padding-left: 18px;
        }
        .files-bar .file-pill__select option {
            direction: rtl;
            text-align: right;
        }
        .files-bar .file-pill__delete {
            background: transparent;
            border: none;
            color: #6c757d;
            font-size: 16px;
            cursor: pointer;
            padding: 4px 6px;
            border-radius: 6px;
            transition: color 0.2s, background 0.2s;
        }
        .files-bar .file-pill__delete:hover {
            color: #dc3545;
            background: #f8d7da33;
        }
        #mergeFilePages {
            min-width: 0;
            width: 100%;
            flex: 1 1 auto;
            min-height: 0;
            overflow-y: auto;
            overflow-x: hidden;
            overscroll-behavior-y: contain;
            padding-top: 16px;
        }
        html.itqan-editor-active #pagePreview.docx-viewer-container,
        html.itqan-editor-active #pagePreview.pdf-viewer-container {
            border: none;
            border-radius: 0;
            background: transparent;
            max-height: none;
            overflow: visible;
            padding: 25px;
            width: 100%;
            box-sizing: border-box;
        }
        #editor-section .loading-spinner { flex-shrink: 0; padding: 24px; }

        @media (max-width: 991.98px) {
            html.itqan-editor-active { overflow: auto !important; height: auto !important; }
            html.itqan-editor-active body.bg-light-subtle { overflow: auto !important; height: auto !important; max-height: none !important; }
            .main-editor { flex-direction: column !important; height: auto !important; }
            html.itqan-editor-active #editor-section.main-editor { position: relative !important; flex-direction: column !important; height: auto !important; top: auto !important; left: auto !important; right: auto !important; bottom: auto !important; }
            #editor-section .sidebar { order: 1 !important; position: relative !important; width: 100% !important; min-width: 0 !important; max-height: none !important; height: auto !important; flex: none !important; border-left: none; border-top: 1px solid #ddd; }
            #editor-section .sidebar .merge-sidebar-body { overflow: visible !important; max-height: none !important; height: auto !important; }
            .viewer-container { order: 2 !important; width: 100% !important; min-height: 50vh; overflow: visible !important; }
            .files-bar { padding: 8px 10px; }
            .files-bar__inner { justify-content: center; }
            .files-bar .file-pill { min-width: 0 !important; max-width: 100%; flex: 1 1 100%; }
            #editor-section .sidebar > .merge-sidebar-footer, .main-editor .p-3 { position: fixed; bottom: 0; left: 0; right: 0; z-index: 1050; padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px)) !important; background: #fff; border-top: 1px solid #e8e8e8; box-shadow: 0 -4px 20px rgba(0,0,0,0.1); }
            .btn-finish { padding: 14px !important; font-size: 16px !important; border-radius: 10px !important; }
            html.itqan-editor-active .tool-seo-visible-wrap, html.itqan-editor-active .merge-seo-content { display: none !important; }
        }

        .upload-pick-wrap {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            transform: translateX(18px);
            position: relative;
            z-index: 20;
        }
        .upload-cloud-stack {
            display: flex;
            flex-direction: column;
            gap: 1px;
            position: relative;
            z-index: 220;
            pointer-events: auto;
        }
        .upload-cloud-stack .cloud-icon,
        .upload-cloud-stack .cloud-upload-btn { pointer-events: auto; }

        .container.my-5 { margin-top: 1rem !important; margin-bottom: 2rem !important; }
        #pptToPdfPageHeader { margin-bottom: 0.3rem !important; }
        #pptToPdfPageHeader .display-5 {
            font-size: clamp(1.75rem, 3.5vw, 2.15rem);
            margin-bottom: 0.15rem !important;
            line-height: 1.2;
        }
        #pptToPdfPageHeader .lead { margin-bottom: 0; font-size: 0.98rem; line-height: 1.3; }
        /* مربع الرفع — نهائي: مطابق merge_pdf */
        #upload-section #dropArea.upload-area,
        #upload-section #dropArea.card.upload-area {
            width: min(100%, var(--itqan-tool-panel-w, 46.5rem));
            max-width: min(100%, var(--itqan-tool-panel-w, 46.5rem));
            margin-left: auto;
            margin-right: auto;
            padding: 0.65rem 1.55rem 0.45rem !important;
            box-shadow: none !important;
            overflow: visible !important;
            background-color: #f8f9fa !important;
            background: #f8f9fa !important;
            border: 2px dashed #ced4da !important;
        }
        @media (min-width: 576px) {
            #upload-section #dropArea.upload-area,
            #upload-section #dropArea .card-body,
            #upload-section #dropArea .upload-row-wrap,
            #upload-section #dropArea .d-flex.justify-content-center {
                overflow: visible !important;
            }
        }
        @media (min-width: 992px) {
            #upload-section #dropArea.upload-area {
                padding-block: 0.75rem 0.5rem !important;
                padding-inline: 1.55rem !important;
                overflow: visible !important;
            }
        }
        @media (max-width: 575.98px) {
            #upload-section #dropArea.upload-area {
                width: 100%;
                padding: 1rem !important;
                overflow: visible !important;
            }
            #upload-section #dropArea .card-body,
            #upload-section #dropArea .upload-row-wrap {
                overflow: visible !important;
            }
        }
        #upload-section #dropArea .card-body {
            padding: 0.3rem 0.85rem 0.2rem;
            overflow: visible !important;
            width: 100%;
            background: transparent !important;
        }
        #upload-section #dropArea .upload-row-wrap {
            overflow: visible !important;
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        @media (max-width: 768px) { .upload-pick-wrap { transform: none; } }

        .merge-sidebar-help-btn {
            width: 100%;
            margin: 0 0 0.85rem;
            padding: 0.55rem 0.75rem;
            font-size: 0.82rem;
            font-weight: 600;
            border: 1px dashed var(--border-color);
            border-radius: 8px;
            background: #fff;
            color: #333;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.45rem;
            transition: background 0.15s ease, border-color 0.15s ease;
        }
        .merge-sidebar-help-btn:hover { background: #f8f9fa; border-color: #adb5bd; color: #111; }
.merge-seo-content {
            margin-top: 2.5rem;
            padding-top: 1.75rem;
            border-top: 1px solid var(--border-color);
            max-width: 42rem;
            margin-left: auto;
            margin-right: auto;
        }
        .merge-seo-content--modal {
            margin-top: 0;
            padding-top: 0;
            border-top: none;
            max-width: none;
        }
        .merge-seo-steps {
            list-style: none;
            padding: 0;
            margin: 0;
            counter-reset: merge-howto-step;
        }
        .merge-seo-steps li {
            counter-increment: merge-howto-step;
            display: flex;
            gap: 0.85rem;
            align-items: flex-start;
            padding: 0.55rem 0;
            color: #495057;
            font-size: 0.95rem;
            line-height: 1.55;
        }
        .merge-seo-steps li::before {
            content: counter(merge-howto-step);
            flex-shrink: 0;
            width: 1.65rem;
            height: 1.65rem;
            border-radius: 50%;
            background: #111;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 0.1rem;
        }
        .merge-seo-faq .accordion-button { font-size: 0.95rem; font-weight: 600; padding: 0.85rem 1rem; }
        .merge-seo-faq .accordion-button:not(.collapsed) { background: #f8f9fa; color: #111; box-shadow: none; }
        .merge-seo-faq .accordion-item { border-color: var(--border-color); }