/* =====================================================
   FREELANCEA PDF TOOLS - PRODUCTION STYLESHEET
   Version: 1.0.0
   Author: Freelancea Development Team
   ===================================================== */

/* CSS Variables / Design Tokens */
:root {
    /* Brand Colors */
    --primary: #C62E2E;
    --primary-dark: #a52525;
    --primary-light: #e64545;
    --secondary: #1e1e1e;
    --accent: #C1E172;
    --accent-dark: #a8c85f;
    
    /* Neutral Colors */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-dark: #1e1e1e;
    --text-primary: #1e1e1e;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --text-light: #ffffff;
    
    /* Functional Colors */
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
    
    /* Borders & Shadows */
    --border-color: #e9ecef;
    --border-radius-sm: 8px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --line-height: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-overlay: 400;
    --z-tooltip: 500;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: var(--font-size-base);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero-section {
    background: linear-gradient(135deg, var(--secondary) 0%, #2d2d2d 100%);
    color: var(--text-light);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(193, 225, 114, 0.15);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.hero-section h1 {
    color: snow;
    margin-bottom: var(--spacing-lg);
    font-size: clamp(1.75rem, 5vw, 3rem);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

/* =====================================================
   MAIN CONTENT
   ===================================================== */
.main-content {
    padding: var(--spacing-3xl) 0;
}

/* =====================================================
   TOOL TABS NAVIGATION
   ===================================================== */
.tool-tabs {
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--bg-primary);
}

.tool-tabs::-webkit-scrollbar {
    height: 6px;
}

.tool-tabs::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: 3px;
}

.tool-tabs::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
}

.tabs-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    min-width: max-content;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.tab-btn.active {
    background: var(--primary);
    color: var(--text-light);
}

.tab-icon {
    font-size: var(--font-size-lg);
}

/* =====================================================
   TOOL WORKSPACE
   ===================================================== */
.tool-workspace {
    position: relative;
}

.tool-panel {
    display: none;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
}

.tool-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.tool-header h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.tool-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

/* =====================================================
   UPLOAD ZONE
   ===================================================== */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-3xl);
    text-align: center;
    transition: all var(--transition);
    background: var(--bg-primary);
    cursor: pointer;
    margin-bottom: var(--spacing-xl);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(198, 46, 46, 0.05);
}

.upload-zone.has-file {
    border-style: solid;
    border-color: var(--success);
    background: rgba(40, 167, 69, 0.05);
}

.upload-content {
    pointer-events: none;
}

.upload-zone.has-file .upload-content {
    display: none;
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.upload-zone h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.file-input {
    display: none;
}

.upload-btn {
    pointer-events: auto;
}

/* File Info */
.file-info {
    padding: var(--spacing-lg);
}

.file-info.hidden {
    display: none;
}

.file-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.file-icon {
    font-size: 2.5rem;
}

.file-details {
    flex: 1;
    text-align: left;
}

.file-name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    word-break: break-all;
}

.file-size {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.page-count {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--primary);
    font-weight: 500;
}

.remove-file {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--danger);
    color: var(--text-light);
    font-size: var(--font-size-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.remove-file:hover {
    background: #c82333;
    transform: scale(1.1);
}

/* Multi Upload */
.multi-upload .upload-content {
    padding: var(--spacing-xl) 0;
}

/* Files List (for merge) */
.files-list {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.files-list.hidden {
    display: none;
}

.files-list h4 {
    margin-bottom: var(--spacing-sm);
}

.file-count {
    color: var(--text-secondary);
    font-weight: 400;
}

.drag-hint {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.sortable-files {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    cursor: grab;
    transition: all var(--transition-fast);
}

.sortable-file:hover {
    box-shadow: var(--shadow);
}

.sortable-file.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.sortable-file .drag-handle {
    color: var(--text-muted);
    cursor: grab;
}

.sortable-file .file-order {
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.add-more-btn {
    width: 100%;
}

/* =====================================================
   TOOL OPTIONS
   ===================================================== */
.tool-options {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.tool-options h4 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.option-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.option-group select,
.option-group input[type="text"],
.option-group input[type="number"],
.option-group input[type="email"],
.option-group input[type="url"],
.option-group input[type="password"] {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.option-group select:focus,
.option-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(198, 46, 46, 0.1);
}

.option-group input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
}

.range-value {
    font-size: var(--font-size-sm);
    color: var(--primary);
    font-weight: 600;
}

/* Checkbox Group */
.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

.checkbox-group label {
    cursor: pointer;
    user-select: none;
}

/* Custom Field */
.custom-field {
    margin-top: var(--spacing-md);
}

.custom-field label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.custom-field input,
.custom-field textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.custom-field textarea {
    min-height: 100px;
    resize: vertical;
}

.custom-field input:focus,
.custom-field textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(198, 46, 46, 0.1);
}

.custom-field.hidden {
    display: none;
}

/* Size Inputs */
.size-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Password Input */
.password-input-wrapper {
    position: relative;
}

.password-input-wrapper input {
    width: 100%;
    padding-right: 50px;
}

.toggle-password {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.toggle-password:hover {
    opacity: 1;
}

/* Compression Levels */
.compression-levels,
.split-modes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.compression-option,
.split-option {
    position: relative;
}

.compression-option input,
.split-option input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.compression-option label,
.split-option label {
    display: block;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.compression-option input:checked + label,
.split-option input:checked + label {
    border-color: var(--primary);
    background: rgba(198, 46, 46, 0.05);
}

.compression-option label:hover,
.split-option label:hover {
    border-color: var(--primary);
}

.option-title {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.option-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Rotation Buttons */
.rotation-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.rotation-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

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

.rotation-btn.active {
    border-color: var(--primary);
    background: rgba(198, 46, 46, 0.05);
}

.rotate-icon {
    font-size: var(--font-size-3xl);
}

/* Permissions Section */
.permissions-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.permissions-section h5 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* Unlock Info */
.unlock-info {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--warning);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.unlock-info p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-light);
    border: 2px solid var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    background: var(--text-muted);
    border-color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-danger {
    background: var(--danger);
    color: var(--text-light);
    border: 2px solid var(--danger);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition);
}

.btn-danger:hover {
    background: #c82333;
    border-color: #c82333;
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-icon {
    font-size: var(--font-size-lg);
}

/* =====================================================
   RESULT AREA
   ===================================================== */
.result-area {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: rgba(40, 167, 69, 0.05);
    border: 2px solid var(--success);
    border-radius: var(--border-radius);
    text-align: center;
}

.result-area.hidden {
    display: none;
}

.result-success {
    max-width: 500px;
    margin: 0 auto;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.result-success h3 {
    color: var(--success);
    margin-bottom: var(--spacing-sm);
}

.result-message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Compression Stats */
.compression-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.compression-stats .stat {
    text-align: center;
}

.compression-stats .stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.compression-stats .stat-value {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.compression-stats .stat.highlight .stat-value {
    color: var(--success);
}

/* Split Results */
.split-results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.split-result-item {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    text-align: center;
}

/* Image Preview Grid */
.image-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.image-preview-item {
    background: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
}

.image-preview-item img {
    width: 100%;
    border-radius: var(--border-radius-sm);
}

/* =====================================================
   PROCESSING OVERLAY
   ===================================================== */
.processing-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-overlay);
}

.processing-overlay.hidden {
    display: none;
}

.processing-content {
    background: var(--bg-secondary);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

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

.processing-content h3 {
    margin-bottom: var(--spacing-sm);
}

.processing-message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.progress-bar {
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width var(--transition);
}

.progress-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* =====================================================
   HISTORY SECTION
   ===================================================== */
.history-section {
    margin-top: var(--spacing-2xl);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h3 {
    margin: 0;
}

.history-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.no-history {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
}

.history-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.history-item:hover {
    box-shadow: var(--shadow-sm);
}

.history-icon {
    font-size: var(--font-size-2xl);
}

.history-details {
    flex: 1;
}

.history-title {
    font-weight: 600;
    color: var(--text-primary);
}

.history-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.history-actions-item {
    display: flex;
    gap: var(--spacing-sm);
}

/* =====================================================
   EDITOR WORKSPACE
   ===================================================== */
.editor-workspace,
.signature-workspace {
    margin-bottom: var(--spacing-xl);
}

.editor-workspace.hidden,
.signature-workspace.hidden {
    display: none;
}

.editor-toolbar {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    flex-wrap: wrap;
    align-items: center;
}

.toolbar-group {
    display: flex;
    gap: var(--spacing-sm);
}

.toolbar-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.toolbar-btn:hover {
    border-color: var(--primary);
    background: rgba(198, 46, 46, 0.05);
}

.toolbar-btn.active {
    background: var(--primary);
    color: var(--text-light);
    border-color: var(--primary);
}

.toolbar-options {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    margin-left: auto;
}

.toolbar-options.hidden {
    display: none;
}

.toolbar-options select,
.toolbar-options input {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
}

.editor-canvas-container {
    background: var(--secondary);
    padding: var(--spacing-lg);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.page-navigator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.nav-btn {
    width: 36px;
    height: 36px;
    background: var(--bg-secondary);
    border: none;
    border-radius: 50%;
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover:not(:disabled) {
    background: var(--primary);
    color: var(--text-light);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-indicator {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.canvas-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    overflow: auto;
    max-height: 600px;
}

#pdf-canvas {
    max-width: 100%;
    box-shadow: var(--shadow-lg);
}

.annotations-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

/* =====================================================
   SIGNATURE WORKSPACE
   ===================================================== */
.signature-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.sig-tab {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.sig-tab:hover {
    border-color: var(--primary);
}

.sig-tab.active {
    background: var(--primary);
    color: var(--text-light);
    border-color: var(--primary);
}

.signature-panels {
    margin-bottom: var(--spacing-lg);
}

.sig-panel {
    display: none;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
}

.sig-panel.active {
    display: block;
}

#signature-canvas {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-secondary);
    cursor: crosshair;
    touch-action: none;
}

.sig-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-top: var(--spacing-md);
}

#typed-signature {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-2xl);
    font-family: cursive;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-md);
}

.typed-sig-preview {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-size: var(--font-size-3xl);
    color: var(--text-primary);
    min-height: 100px;
}

.sig-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
}

.uploaded-sig-preview {
    margin-top: var(--spacing-md);
    text-align: center;
}

.uploaded-sig-preview img {
    max-width: 200px;
    max-height: 100px;
    margin: 0 auto;
}

.saved-signatures {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
}

.saved-signatures h5 {
    margin-bottom: var(--spacing-md);
}

.signatures-list {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.saved-sig-item {
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.saved-sig-item:hover {
    border-color: var(--primary);
}

.saved-sig-item img {
    max-width: 100px;
    max-height: 50px;
}

.pdf-preview-container {
    margin-top: var(--spacing-lg);
}

.pdf-preview-container h5 {
    margin-bottom: var(--spacing-md);
}

.pdf-pages-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

/* =====================================================
   OCR PREVIEW
   ===================================================== */
.ocr-preview {
    margin-bottom: var(--spacing-xl);
}

.ocr-preview.hidden {
    display: none;
}

.text-preview-area {
    margin-bottom: var(--spacing-md);
}

#extracted-text {
    width: 100%;
    min-height: 200px;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: monospace;
    font-size: var(--font-size-sm);
    resize: vertical;
}

.copy-text {
    width: 100%;
}

/* =====================================================
   HTML TO PDF SECTIONS
   ===================================================== */
.html-input-section {
    margin-bottom: var(--spacing-xl);
}

.input-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.input-tab {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.input-tab:hover {
    border-color: var(--primary);
}

.input-tab.active {
    background: var(--primary);
    color: var(--text-light);
    border-color: var(--primary);
}

.input-panels {
    margin-bottom: var(--spacing-lg);
}

.input-panel {
    display: none;
}

.input-panel.active {
    display: block;
}

#html-code {
    min-height: 200px;
    font-family: monospace;
}

.upload-zone.small {
    padding: var(--spacing-xl);
}

/* =====================================================
   PAGE PREVIEW
   ===================================================== */
.page-preview {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
}

.page-preview.hidden {
    display: none;
}

.page-preview h4 {
    margin-bottom: var(--spacing-md);
}

.page-thumbnails {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-md);
}

.page-thumbnail {
    position: relative;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.page-thumbnail:hover {
    border-color: var(--primary);
}

.page-thumbnail.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(198, 46, 46, 0.2);
}

.page-thumbnail img {
    width: 100%;
}

.page-number {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: var(--text-light);
    text-align: center;
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs);
}

/* =====================================================
   FEATURES SECTION
   ===================================================== */
.features-section {
    background: var(--bg-secondary);
    padding: var(--spacing-3xl) 0;
}

.features-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.feature-card p {
    color: var(--text-secondary);
    margin: 0;
}

/* =====================================================
   HOW TO SECTION
   ===================================================== */
.how-to-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.how-to-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.step-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0 auto var(--spacing-lg);
}

.step-card h3 {
    margin-bottom: var(--spacing-sm);
}

.step-card p {
    color: var(--text-secondary);
    margin: 0;
}

/* =====================================================
   CTA SECTION
   ===================================================== */
.cta-section {
    background: linear-gradient(135deg, var(--secondary) 0%, #2d2d2d 100%);
    padding: var(--spacing-3xl) 0;
    color: var(--text-light);
}

.cta-section.freelancer-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: snow;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.cta-btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition);
}

.cta-section .btn-primary {
    background: var(--accent);
    color: var(--secondary);
    border-color: var(--accent);
}

.cta-section .btn-primary:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

.cta-section.freelancer-cta .btn-primary {
    background: var(--text-light);
    color: var(--primary);
    border-color: var(--text-light);
}

.cta-section .btn-secondary {
    background: transparent;
    color: var(--text-light);
    border-color: var(--text-light);
}

.cta-section .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.cta-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

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

.cta-stat .stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--accent);
}

.cta-section.freelancer-cta .cta-stat .stat-number {
    color: var(--text-light);
}

.cta-stat .stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* =====================================================
   FAQ SECTION
   ===================================================== */
.faq-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.faq-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: var(--font-size-2xl);
    font-weight: 300;
    transition: transform var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    margin: 0;
}

/* =====================================================
   SEO CONTENT SECTION
   ===================================================== */
.seo-content-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.seo-article {
    max-width: 900px;
    margin: 0 auto;
}

.seo-article h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.seo-article h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.seo-article h4 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.seo-article p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* =====================================================
   SHARE SECTION
   ===================================================== */
.share-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
    text-align: center;
}

.share-section h3 {
    margin-bottom: var(--spacing-sm);
}

.share-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    color: var(--text-light);
    transition: all var(--transition);
}

.share-btn.twitter {
    background: #1da1f2;
}

.share-btn.linkedin {
    background: #0077b5;
}

.share-btn.facebook {
    background: #1877f2;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--text-light);
}

/* =====================================================
   SCROLL TO TOP
   ===================================================== */
.get-template {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: var(--z-sticky);
}

#scrollToTopBtn {
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

#scrollToTopBtn.visible {
    opacity: 1;
    visibility: visible;
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */
@media (max-width: 992px) {
    .hero-section {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-stats {
        gap: var(--spacing-xl);
    }
    
    .stat-number {
        font-size: var(--font-size-2xl);
    }
    
    .tool-panel {
        padding: var(--spacing-lg);
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.35rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-section {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-badge {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .tab-btn {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .tab-text {
        display: none;
    }
    
    .tab-icon {
        font-size: var(--font-size-xl);
    }
    
    .upload-zone {
        padding: var(--spacing-xl);
    }
    
    .upload-icon {
        font-size: 3rem;
    }
    
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .compression-levels,
    .split-modes {
        grid-template-columns: 1fr;
    }
    
    .rotation-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn-primary,
    .action-buttons .btn-secondary {
        width: 100%;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .history-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .editor-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-group {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .signature-tabs,
    .input-tabs {
        flex-direction: column;
    }
    
    .sig-tab,
    .input-tab {
        width: 100%;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-btn {
        width: 100%;
    }
    
    .cta-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .share-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .share-btn {
        width: 200px;
        justify-content: center;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-question {
        font-size: var(--font-size-base);
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-section h1 {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .tool-panel {
        padding: var(--spacing-md);
    }
    
    .tool-header h2 {
        font-size: var(--font-size-xl);
    }
    
    .upload-zone {
        padding: var(--spacing-lg);
    }
    
    .file-preview {
        flex-direction: column;
        text-align: center;
    }
    
    .file-details {
        text-align: center;
    }
    
    .compression-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    .hero-section,
    .tool-tabs,
    .action-buttons,
    .history-section,
    .cta-section,
    .share-section,
    .get-template {
        display: none !important;
    }
    
    .tool-panel {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* =====================================================
   ACCESSIBILITY
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus Styles */
:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --shadow: none;
        --shadow-sm: none;
        --shadow-md: none;
        --shadow-lg: none;
    }
    
    .btn-primary,
    .btn-secondary {
        border-width: 3px;
    }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
    /* Uncomment to enable dark mode
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --text-primary: #f8f9fa;
        --text-secondary: #adb5bd;
        --border-color: #444;
    }
    */
}