/* ================================================================
   MULTIPLE PAGES PER SHEET (N-UP) - Complete Styling
   Version: 1.0
   (variables are scoped to the tool so they never leak into the site)
   ================================================================ */

/* ================================================================
   1. VARIABLES (scoped)
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --ppt: #c43e1c;
    --ppt-light: #fdebe6;

    --secondary: #f3f4f6;
    --secondary-hover: #e5e7eb;
    --success: #10b981;
    --success-light: #d1fae5;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;

    --text: #1f2937;
    --text-secondary: #4b5563;
    --text-light: #6b7280;
    --text-white: #ffffff;

    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray: #f1f5f9;

    --border: #e5e7eb;
    --border-light: #f1f5f9;
    --border-dark: #d1d5db;

    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-max: 720px;

    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px 40px;
}

/* ================================================================
   2. UPLOAD (base styles come from /assets/css/tools.css)
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .upload-area .upload-icon i {
    color: var(--ppt);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .upload-area {
    cursor: pointer;
    position: relative;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .upload-area.loading {
    pointer-events: none;
    opacity: 0.7;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .upload-area.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 36px;
    height: 36px;
    margin: -18px 0 0 -18px;
    border: 3px solid var(--primary-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: nupSpin 0.8s linear infinite;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .upload-formats {
    margin-top: 12px;
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .upload-formats span {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.03em;
    padding: 3px 8px;
    border-radius: 20px;
    background: var(--ppt-light);
    color: var(--ppt);
}

/* ================================================================
   3. ERROR MESSAGE
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .error-message {
    max-width: var(--container-max);
    margin: 0 auto 16px;
    padding: 14px 18px;
    background: var(--danger-light);
    color: #991b1b;
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--danger);
    font-size: 14px;
    line-height: 1.5;
    display: none;
    align-items: center;
    gap: 10px;
    animation: nupSlideDown 0.3s ease;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .error-message:not(:empty) {
    display: flex;
}

/* ================================================================
   4. EDITOR LAYOUT
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .editor-layout {
    display: none;
    gap: 30px;
    align-items: flex-start;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .editor-layout.active {
    display: flex;
}

/* ================================================================
   5. PREVIEW BOX
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-box {
    flex: 1;
    min-width: 0;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 10px 16px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    flex-wrap: wrap;
    direction: ltr;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar button {
    padding: 6px 16px;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    background: var(--bg-white);
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    transition: var(--transition);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 36px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar button:hover:not(:disabled) {
    background: var(--secondary-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar input {
    width: 60px;
    padding: 6px 10px;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    background: var(--bg-white);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar span {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .hidden-badge {
    display: none;
    font-size: 11px !important;
    font-weight: 600 !important;
    padding: 3px 10px;
    border-radius: 20px;
    background: var(--warning-light);
    color: #92400e !important;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .hidden-badge.active {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-canvas-wrap {
    position: relative;
    background: var(--bg-gray);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    min-height: 260px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-canvas-wrap canvas {
    display: block;
    width: 100%;
    height: auto;
    max-height: 640px;
    object-fit: contain;
    border-radius: 2px;
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.15);
    background: var(--bg-white);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-loading {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(248, 250, 252, 0.55);
    border-radius: var(--radius-sm);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-loading.active {
    display: flex;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-loading::after {
    content: "";
    width: 32px;
    height: 32px;
    border: 3px solid var(--primary-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: nupSpin 0.8s linear infinite;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-note {
    margin: 12px 0 0;
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.5;
    display: flex;
    gap: 6px;
    align-items: flex-start;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-note i {
    color: var(--primary);
    margin-top: 2px;
}

/* ================================================================
   6. SETTINGS PANEL
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .tool-settings {
    flex: 0 0 380px;
    min-width: 320px;
    max-width: 420px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 20px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .tool-settings.hidden {
    display: none;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .tool-settings:not(.hidden) {
    display: block;
    animation: nupFadeIn 0.4s ease;
}

/* File box */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .file-box {
    padding: 14px 16px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    display: flex;
    gap: 12px;
    align-items: center;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .file-box > i {
    font-size: 28px;
    color: var(--ppt);
    flex-shrink: 0;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .file-row {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .file-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    word-break: break-word;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .file-meta {
    display: flex;
    gap: 10px;
    font-size: 12px;
    color: var(--text-light);
}

/* Options */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .options-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .option-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .option-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .option-label {
    font-weight: 600;
    font-size: 13px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 6px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .option-label i {
    color: var(--primary);
    font-size: 13px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .form-control {
    width: 100%;
    padding: 8px 12px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--bg-white);
    transition: var(--transition);
    color: var(--text);
    font-family: inherit;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .form-control:hover:not(:disabled) {
    border-color: var(--border-dark);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .form-control:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    background: var(--bg-light);
}

/* Segmented control (quality) */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-control {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    padding: 4px;
    background: var(--bg-gray);
    border-radius: var(--radius-sm);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option {
    border: none;
    background: transparent;
    padding: 8px 4px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    line-height: 1.2;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option small {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-light);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option:hover {
    color: var(--text);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option.active {
    background: var(--bg-white);
    color: var(--primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option.active small {
    color: var(--primary);
}

/* Checkbox rows */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .check-row {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .check-row input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .check-row .count-pill {
    font-size: 11px;
    font-weight: 600;
    padding: 1px 8px;
    border-radius: 20px;
    background: var(--warning-light);
    color: #92400e;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] [data-role="custom-range"] {
    display: none;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .text-muted {
    font-size: 12px;
    color: var(--text-light);
}

/* ================================================================
   7. PROGRESS
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .convert-progress {
    display: none;
    margin-top: 18px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .convert-progress.active {
    display: block;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .progress-track {
    height: 8px;
    background: var(--bg-gray);
    border-radius: 8px;
    overflow: hidden;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--primary), #60a5fa);
    border-radius: 8px;
    transition: width 0.25s ease;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .progress-text {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* ================================================================
   8. ACTION BUTTONS
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    flex: 1;
    min-width: 120px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn:active {
    transform: scale(0.97);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: var(--text-white);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
    flex: 1 1 100%;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.4);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn:disabled {
    opacity: 0.6;
    cursor: wait;
    transform: none !important;
    box-shadow: none !important;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn-secondary {
    background: var(--secondary);
    color: var(--text);
    border: 1px solid var(--border);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn-secondary:hover:not(:disabled) {
    background: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn-success {
    background: var(--success-light);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn-success:hover {
    background: #a7f3d0;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .hidden {
    display: none;
}

/* ================================================================
   9. ANIMATIONS
   ================================================================ */
@keyframes nupFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes nupSlideDown {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes nupSpin {
    to { transform: rotate(360deg); }
}

/* ================================================================
   10. RESPONSIVE
   ================================================================ */
@media (max-width: 1100px) {
    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .tool-settings {
        flex: 0 0 340px;
        min-width: 280px;
        max-width: 380px;
        padding: 22px;
    }
}

@media (max-width: 992px) {
    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .editor-layout.active {
        flex-direction: column;
        align-items: stretch;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .tool-settings {
        flex: 1 1 auto;
        min-width: 0;
        max-width: 100%;
        position: static;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-canvas-wrap canvas {
        max-height: 460px;
    }
}

@media (max-width: 768px) {
    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] {
        padding: 0 12px 30px;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-box {
        padding: 12px;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-canvas-wrap {
        padding: 8px;
        min-height: 180px;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar {
        gap: 8px;
        padding: 8px 10px;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-toolbar button {
        padding: 4px 12px;
        font-size: 16px;
        min-width: 34px;
        min-height: 32px;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .tool-settings {
        padding: 18px;
    }

    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .action-buttons .btn {
        flex: 1 1 100%;
        padding: 12px 20px;
    }
}

@media (max-width: 420px) {
    .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .option-row {
        grid-template-columns: 1fr;
    }
}

/* ================================================================
   11. RTL SUPPORT
   ================================================================ */
[dir="rtl"] .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .error-message {
    border-left: none;
    border-right: 4px solid var(--danger);
}

[dir="rtl"] .tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .progress-bar {
    background: linear-gradient(270deg, var(--primary), #60a5fa);
}

/* ================================================================
   12. N-UP SPECIFIC
   ================================================================ */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] {
    --ppt: #2563eb;
    --ppt-light: #dbeafe;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-control.cols-6 {
    grid-template-columns: repeat(6, 1fr);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-control.cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option svg {
    width: 26px;
    height: 20px;
    display: block;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option svg rect {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.2;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option svg path {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .seg-option .seg-num {
    font-size: 15px;
    font-weight: 700;
}

/* Range sliders */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .range-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .range-value {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 1px 8px;
    border-radius: 20px;
    direction: ltr;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
    cursor: pointer;
}

/* Summary pill in the file box */
.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .summary-pill {
    margin-top: 4px;
    display: inline-flex;
    align-self: flex-start;
    font-size: 12px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 20px;
    background: var(--success-light);
    color: #065f46;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .summary-pill.warn {
    background: var(--warning-light);
    color: #92400e;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .preview-canvas-wrap canvas {
    width: auto;
    max-width: 100%;
    max-height: 640px;
}

.tool-wrapper[data-tool="multiple-pages-per-sheet-pdf"] .sheet-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
}