/* =========================================================
   MASTER CONVERTER SUITE — PDF Tools CSS Extensions
   ========================================================= */

:root {
    --space-xs: var(--space-2);   /* 8px */
    --space-sm: var(--space-3);   /* 12px */
    --space-md: var(--space-4);   /* 16px */
    --space-lg: var(--space-6);   /* 24px */
    --space-xl: var(--space-8);   /* 32px */
    --space-2xl: var(--space-10); /* 40px */
    --space-3xl: var(--space-12); /* 48px */
}

/* 1. Tool Grid Landing Page */
.pdf-tool-grid {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
    animation: fadeIn 0.4s ease both;
}

.tool-grid-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.tool-grid-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: var(--space-sm);
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
}

.tool-grid-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    font-weight: 400;
}

/* 2. Category Filter Tabs */
.tool-category-filter {
    display: flex;
    gap: var(--space-xs);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-xl);
}

.category-btn {
    padding: 8px 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.category-btn:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
}

.category-btn.active {
    background: var(--gradient-accent);
    border-color: transparent;
    color: #ffffff;
    box-shadow: var(--shadow-glow-blue);
}

/* 3. Tool Cards Grid */
.tool-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-md);
    width: 100%;
}

.tool-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 10% 10%, color-mix(in srgb, var(--tool-color, #3b82f6) 10%, transparent) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--tool-color, var(--color-accent-blue));
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4),
                0 0 20px color-mix(in srgb, var(--tool-color, #3b82f6) 20%, transparent);
}

.tool-card:hover::before {
    opacity: 1;
}

.tool-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--tool-color, #3b82f6) 12%, transparent);
    color: var(--tool-color, #3b82f6);
    margin-bottom: var(--space-md);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.tool-card:hover .tool-card-icon {
    transform: scale(1.08);
    background: color-mix(in srgb, var(--tool-color, #3b82f6) 22%, transparent);
    box-shadow: 0 0 10px color-mix(in srgb, var(--tool-color, #3b82f6) 30%, transparent);
}

.tool-card-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.tool-card-desc {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    line-height: 1.45;
}

.tool-pin-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md, 8px);
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text-secondary);
}
.tool-pin-btn:hover { border-color: var(--color-accent-purple); color: var(--color-text-primary); }
.tool-pin-btn.pinned { background: var(--color-accent-purple); border-color: var(--color-accent-purple); color: #fff; }
.pdf-pinned-section { margin-bottom: var(--space-lg); }
.pdf-pinned-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    padding: var(--space-3) var(--space-3) 0;
    border-top: 1px solid var(--color-accent-purple);
}

/* 4. Tool Workspace */
.pdf-workspace {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
    animation: fadeIn 0.4s ease both;
}

.workspace-back-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--space-lg);
    width: fit-content;
}

.workspace-back-btn:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
    border-color: var(--color-border-hover);
    transform: translateX(-2px);
}

.workspace-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.workspace-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--tool-color, #3b82f6) 15%, transparent);
    color: var(--tool-color, #3b82f6);
    flex-shrink: 0;
}

.workspace-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text-primary);
}

.workspace-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* 5. PDF Drop Zone */
.pdf-drop-zone {
    border: 2px dashed rgba(59, 130, 246, 0.25);
    border-radius: var(--radius-xl);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--space-lg);
}

.pdf-drop-zone:hover,
.pdf-drop-zone.drag-over {
    border-color: var(--color-accent-blue);
    background: var(--color-bg-hover);
    box-shadow: var(--shadow-glow-blue);
}

.pdf-drop-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-secondary);
}

.pdf-drop-content svg {
    color: var(--color-accent-blue);
    opacity: 0.8;
}

.pdf-drop-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.pdf-drop-subtitle {
    font-size: 0.85rem;
}

/* URL Input (HTML to PDF) */
.url-input-area {
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.url-input-row {
    display: flex;
    gap: var(--space-sm);
    margin-top: 10px;
}

.url-input-row .control-input {
    flex: 1;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 10px 16px;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
}

.url-input-row .control-input:focus {
    border-color: var(--color-border-focus);
    outline: none;
}

/* Camera Area (Scan to PDF) */
.camera-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    background: #000000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    border: var(--glass-border);
}

#cameraVideo {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    background: #111;
}

.camera-controls {
    display: flex;
    gap: var(--space-sm);
}

/* 6. File list layout for Multi-file operations */
.pdf-file-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.pdf-file-item {
    display: flex;
    align-items: center;
    padding: 12px 18px;
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    gap: var(--space-sm);
    cursor: grab;
    transition: all var(--transition-fast);
}

.pdf-file-item:active {
    cursor: grabbing;
}

.pdf-file-item.dragging {
    opacity: 0.4;
    border-color: var(--color-accent-blue);
}

.pdf-file-handle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    user-select: none;
}

.pdf-file-icon {
    font-size: 1.2rem;
}

.pdf-file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.pdf-file-name {
    font-weight: 600;
    font-size: 0.9rem;
    word-break: break-all;
}

.pdf-file-size {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.pdf-file-remove {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px;
    border-radius: 4px;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-file-remove:hover {
    color: var(--color-accent-red);
    background: rgba(239, 68, 68, 0.1);
}

/* 7. Page Thumbnail Grid Components */
.page-grid-container {
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
}

.page-grid-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-md);
    max-height: 550px;
    overflow-y: auto;
    padding-right: 6px;
}

.page-item {
    position: relative;
    background: rgba(10, 15, 30, 0.8);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.page-item[data-selected="true"] {
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-glow-blue);
}

.page-item[data-remove="true"] {
    border-color: var(--color-accent-red);
    opacity: 0.65;
}

.page-item[data-remove="true"]::after {
    content: 'REMOVING';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%) rotate(-15deg);
    background: var(--color-accent-red);
    color: white;
    font-size: 0.7rem;
    font-weight: 800;
    padding: 3px 10px;
    border-radius: 4px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    pointer-events: none;
    letter-spacing: 1px;
}

.page-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    background: rgba(0,0,0,0.4);
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.page-checkbox {
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.page-number {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}

.page-canvas-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-sm);
    background: #ffffff;
    flex: 1;
    min-height: 180px;
    position: relative;
}

.page-canvas {
    max-width: 100%;
    max-height: 160px;
    height: auto;
    object-fit: contain;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base);
}

.page-item-actions {
    display: flex;
    justify-content: space-around;
    padding: 4px;
    background: rgba(0,0,0,0.3);
    border-top: 1px solid rgba(255,255,255,0.03);
}

.page-action-btn {
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    cursor: pointer;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.page-action-btn:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
}

.page-action-delete:hover {
    color: var(--color-accent-red);
    background: rgba(239, 68, 68, 0.15);
}

/* 8. Options Panel Components */
.tool-options {
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.option-group {
    margin-bottom: var(--space-md);
}

.option-group:last-child {
    margin-bottom: 0;
}

.option-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

/* Radio Cards Grid */
.radio-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-sm);
}

.radio-card {
    display: flex;
    flex-direction: column;
    padding: 14px;
    background: rgba(10, 15, 30, 0.4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.radio-card:hover {
    border-color: var(--color-border-hover);
    background: rgba(10, 15, 30, 0.6);
}

.radio-card.active,
.radio-card:has(input:checked) {
    border-color: var(--color-accent-blue);
    background: var(--gradient-glow);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.15);
}

.radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0; height: 0;
}

.radio-card-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.radio-card-desc {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    line-height: 1.35;
}

/* Option inputs */
.control-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-sm);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--color-text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 15px;
    height: 15px;
}

/* Position Grid (Page Numbers) */
.position-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    max-width: 150px;
}

.position-btn {
    aspect-ratio: 1;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-bg-input);
    color: var(--color-text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.position-btn:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.position-btn.active {
    border-color: var(--color-accent-blue);
    background: var(--gradient-glow);
    color: var(--color-text-primary);
}

/* 9. Progress Bar */
.workspace-progress {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: var(--space-lg);
    background: var(--color-bg-card);
    border: var(--glass-border);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--gradient-progress);
    background-size: 200% auto;
    animation: progressBarGlow 1.5s linear infinite;
    border-radius: 3px;
    transition: width var(--transition-fast) ease-out;
}

.progress-text {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

@keyframes progressBarGlow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* 10. Editor Canvas Component & Toolbar */
.pdf-editor-toolbar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px var(--space-md);
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.toolbar-separator {
    width: 1px;
    height: 24px;
    background: var(--color-border);
    margin: 0 4px;
}

.toolbar-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.toolbar-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.toolbar-btn.active {
    background: var(--color-accent-blue);
    border-color: transparent;
    color: white;
}

.toolbar-color {
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 2px;
    cursor: pointer;
    background: transparent;
}

.toolbar-select {
    height: 32px;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-primary);
    padding: 0 8px;
    font-family: var(--font-primary);
    font-size: 0.8rem;
    outline: none;
}

/* Canvas editing area */
.pdf-editor-canvas-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg) var(--space-md);
    background: #141b2e;
    overflow-x: auto;
    position: relative;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border: var(--glass-border);
    border-top: none;
    min-height: 400px;
}

.editor-canvas-wrapper {
    position: relative;
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    background: #ffffff;
    user-select: none;
}

.editor-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 5;
    pointer-events: auto;
}

.editor-page-nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.editor-page-info {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* 11. Signature Pad Drawing Area */
.signature-pad-container {
    background: rgba(10, 15, 30, 0.6);
    border: var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.signature-tabs {
    display: flex;
    background: rgba(0,0,0,0.3);
    border-bottom: 1px solid var(--color-border);
}

.signature-tab {
    flex: 1;
    padding: 10px;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.signature-tab.active {
    color: var(--color-accent-blue);
    background: rgba(59, 130, 246, 0.08);
    border-bottom: 2px solid var(--color-accent-blue);
}

.signature-panel {
    padding: var(--space-md);
    display: none;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.signature-panel.active {
    display: flex;
}

#signatureCanvas {
    background: #ffffff;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    cursor: crosshair;
    max-width: 100%;
}

.signature-draw-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    justify-content: flex-end;
}

#signatureTextPreview {
    font-size: 2.2rem;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    width: 100%;
    background: rgba(0,0,0,0.2);
    border-radius: 6px;
    border: 1px dashed var(--color-border);
}

/* Placed Signature Overlay */
.placed-signature {
    position: absolute;
    border: 1px dashed var(--color-accent-blue);
    cursor: move;
    z-index: 10;
}

.placed-signature img {
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.signature-resize-handle {
    position: absolute;
    width: 10px; height: 10px;
    background: var(--color-accent-blue);
    border-radius: 50%;
    bottom: -5px; right: -5px;
    cursor: se-resize;
}

.signature-delete-btn {
    position: absolute;
    top: -20px; right: -2px;
    background: var(--color-accent-red);
    color: white;
    border: none;
    border-radius: 50%;
    width: 18px; height: 18px;
    font-size: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 12. Compare Visual Diff View */
.compare-view {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
}

.compare-tabs {
    display: flex;
    gap: 6px;
}

.compare-container {
    display: flex;
    gap: var(--space-md);
    overflow-x: auto;
    padding: var(--space-md) 0;
    justify-content: center;
    background: #0d1222;
    border-radius: var(--radius-md);
}

.compare-pane {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.compare-pane-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-secondary);
}

.compare-canvas-wrapper {
    background: #ffffff;
    box-shadow: var(--shadow-md);
    border-radius: 4px;
    padding: 6px;
}

.compare-canvas-wrapper canvas {
    max-width: 100%;
    height: auto;
    max-height: 480px;
}

.compare-summary-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: rgba(59, 130, 246, 0.08);
    border-radius: 6px;
    border: 1px solid rgba(59, 130, 246, 0.15);
    font-size: 0.85rem;
}

.diff-highlight {
    color: var(--color-accent-red);
    font-weight: 700;
}

.match-highlight {
    color: var(--color-accent-green);
    font-weight: 700;
}

/* Compression Result Display */
.compress-result {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    padding: var(--space-xl);
    background: var(--gradient-glow);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
}

.compress-stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
}

.stat-value.highlight {
    color: var(--color-accent-blue);
}

.stat-value.savings {
    color: var(--color-accent-green);
}

.compress-arrow {
    font-size: 1.8rem;
    color: var(--color-text-muted);
    user-select: none;
}

/* OCR Results Area */
.ocr-result-area {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.ocr-textarea {
    width: 100%;
    height: 250px;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    resize: vertical;
}

.ocr-textarea:focus {
    border-color: var(--color-border-focus);
    outline: none;
}

/* Password protection input */
.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper .control-input {
    width: 100%;
    padding-right: 40px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px;
}

.password-toggle:hover {
    color: var(--color-text-primary);
}

/* Action Buttons & Reset */
.workspace-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.workspace-actions .btn {
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

/* Result Box */
.workspace-result {
    background: var(--color-bg-card);
    border: 1px solid var(--color-accent-green);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.1);
    animation: fadeInUp 0.4s ease both;
}

.result-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-accent-green);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    font-size: 1.1rem;
}

.result-content {
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

/* 13. Mobile Responsive adjustments */
@media (max-width: 767px) {
    .tool-category-filter {
        justify-content: flex-start !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        padding: 4px var(--space-sm) 12px;
        margin-left: calc(-1 * var(--space-md));
        margin-right: calc(-1 * var(--space-md));
        scrollbar-width: none; /* Firefox */
    }
    .tool-category-filter::-webkit-scrollbar {
        display: none; /* Safari and Chrome */
    }
    .tool-category-filter .category-btn {
        flex-shrink: 0;
    }

    .tool-cards {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--space-sm);
    }
    
    .tool-grid-title {
        font-size: 1.7rem;
    }
    
    .workspace-title {
        font-size: 1.4rem;
    }
    
    .compare-container {
        flex-direction: column;
        align-items: center;
    }
    
    .compress-result {
        flex-direction: column;
        gap: var(--space-md);
        padding: var(--space-md);
    }
    
    .compress-arrow {
        transform: rotate(90deg);
    }
}

/* 14. Shimmer Skeleton Animation */
.shimmer {
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: shimmer-anim 1.5s infinite linear;
}

@keyframes shimmer-anim {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}