/* CSS Custom Properties for theming */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.2s ease-in-out;
}

/* Dark mode theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    
    /* Additional dark mode variables */
    --card-background: #1e293b;
    --input-background: #1e293b;
    --input-text: #f1f5f9;
    --dropdown-background: #1e293b;
    --dropdown-text: #f1f5f9;
    --dropdown-hover: #334155;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.logo-img:hover {
    transform: scale(1.05);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

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

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--primary-color);
    background: var(--bg-tertiary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* Navigation Mobile Responsive */
@media (max-width: 768px) {
    .nav {
        gap: 0.5rem;
    }
    
    .nav-link {
        padding: 0.4rem 0.6rem;
        font-size: 0.9rem;
    }
}

/* Privacy Banner */
.privacy-banner {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    padding: 0.75rem 0;
    text-align: center;
}

.privacy-banner p {
    margin: 0;
    font-size: 0.9rem;
}

/* Ad Banners */
.ad-banner {
    margin: 1rem 0;
    text-align: center;
}

.ad-banner.ad-top {
    margin: 0.5rem 0;
    max-height: 120px;
    overflow: hidden;
}

.ad-banner.ad-top .adsbygoogle {
    max-height: 120px;
    min-height: 90px;
}

/* Responsive ad display */
.ad-mobile {
    display: none;
}

.ad-desktop {
    display: inline-block;
}

/* Mobile responsive ad handling */
@media (max-width: 768px) {
    .ad-banner.ad-top {
        max-height: 100px;
    }
    
    .ad-desktop {
        display: none;
    }
    
    .ad-mobile {
        display: inline-block;
    }
}

.ad-banner.ad-inline {
    margin: 2rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.ad-placeholder {
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    color: var(--text-muted);
}

/* Main Content */
.main {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 4rem;
    padding: 3rem 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-radius: var(--border-radius-lg);
    position: relative;
    overflow: hidden;
}

/* Compact Hero Variant */
.hero.compact {
    padding: 2rem 0;
    margin-bottom: 2rem;
}

/* Tools CTA */
.tools-cta {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1rem 0;
}

.tools-cta h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.tools-cta p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, var(--primary-color)10, transparent 50%),
                radial-gradient(circle at 70% 80%, var(--primary-color)08, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-icon {
    margin-bottom: 1.5rem;
}

.hero-emoji {
    font-size: 4rem;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), #4338ca);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 1.1rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Responsive Hero */
@media (max-width: 768px) {
    .hero {
        padding: 2rem 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-emoji {
        font-size: 3rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }
    
    .hero-features {
        gap: 0.75rem;
    }
    
    .feature-badge {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
}

/* Tool Section */
.tool-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

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

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tool-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.tool-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.tool-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* File Upload Area */
.file-upload-area {
    border: 3px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.file-upload-area:hover,
.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: var(--bg-primary);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.upload-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.upload-btn:hover {
    background: var(--primary-hover);
}

/* Form Elements */
.split-options,
.compress-options {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

/* Split Mode Tabs */
.split-mode-tabs {
    display: flex;
    gap: 0.5rem;
    margin: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.split-mode-btn {
    background: none;
    border: none;
    padding: 0.75rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.split-mode-btn:hover {
    color: var(--primary-color);
}

.split-mode-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.split-mode-content {
    display: none;
    margin: 1rem 0;
}

.split-mode-content.active {
    display: block;
}

/* Page Thumbnails */
.thumbnails-container {
    margin: 1rem 0;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.thumbnails-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

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

.thumbnail-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.thumbnail-item.selected {
    border-color: var(--success-color);
    box-shadow: 0 0 0 2px var(--success-color);
}

.thumbnail-canvas {
    width: 100%;
    height: auto;
    display: block;
}

.thumbnail-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.25rem;
    text-align: center;
    font-size: 0.75rem;
}

.thumbnail-checkbox {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 20px;
    height: 20px;
}

/* Page Selection */
.page-selection-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.clear-selection {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.clear-selection:hover {
    background: #dc2626;
}

/* Advanced Options */
.advanced-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.advanced-input {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Images Options */
.images-options,
.extract-options {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

.images-preview {
    margin-bottom: 1.5rem;
}

.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.image-preview-item {
    position: relative;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-primary);
}

.image-preview-item img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    display: block;
}

.image-preview-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.25rem;
    text-align: center;
    font-size: 0.7rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.image-remove-btn {
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    background: var(--danger-color);
    color: white;
    border: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.image-preview-item:hover .image-remove-btn {
    opacity: 1;
}

.image-remove-btn:hover {
    background: #dc2626;
}

/* PDF Settings */
.pdf-settings,
.extract-settings {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.setting-group label {
    font-weight: 500;
    color: var(--text-primary);
}

.setting-group select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

/* Drag and drop for images */
.file-upload-area.dragover-images {
    border-color: var(--success-color);
    background: var(--bg-primary);
}

/* Image processing loading */
.images-processing {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.processing-image {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.page-info,
.file-size-info {
    margin-bottom: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.range-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.range-inputs label {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-weight: 500;
}

.range-inputs input,
.quality-selector select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

.quality-selector {
    margin-bottom: 1.5rem;
}

.quality-selector label {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-weight: 500;
}

/* File List */
.file-list {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

.file-list h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.files-container {
    margin-bottom: 1.5rem;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
}

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

.file-name {
    font-weight: 500;
    color: var(--text-primary);
}

.file-size {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.remove-file {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.remove-file:hover {
    background: #dc2626;
}

/* Buttons */
.process-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
    width: 100%;
}

.process-btn:hover {
    background: var(--primary-hover);
}

.process-btn:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

/* Progress Bar */
.progress-bar {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    height: 8px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    background: var(--primary-color);
    height: 100%;
    width: 0%;
    transition: width 0.3s ease;
}

/* Result Section */
.result-section {
    background: var(--bg-secondary);
    border: 2px solid var(--success-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    margin-top: 2rem;
}

.result-section h3 {
    color: var(--success-color);
    margin-bottom: 1rem;
}

.result-info {
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.download-btn {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    margin-right: 1rem;
    transition: var(--transition);
}

.download-btn:hover {
    background: #059669;
}

.reset-btn {
    background: var(--text-muted);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
}

.reset-btn:hover {
    background: var(--text-secondary);
}

/* Multiple Downloads */
.multiple-downloads {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.download-btn.small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    flex: 1;
    min-width: 150px;
}

/* Keyboard Shortcuts Info */
.shortcuts-info {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    z-index: 100;
    opacity: 0.8;
    transition: var(--transition);
}

.shortcuts-info:hover {
    opacity: 1;
}

.shortcuts-info kbd {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 0.1em 0.3em;
    font-family: monospace;
    font-size: 0.85em;
}

/* FAQ Section */
.faq-section {
    margin-top: 4rem;
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.faq-item {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.faq-item h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section ul {
    color: var(--text-secondary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-hover);
}

.donate-link {
    display: inline-block;
    margin-top: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    text-align: center;
    color: var(--text-muted);
}

.footer-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-links span {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .logo-img {
        height: 32px;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .tool-section {
        padding: 1rem;
    }
    
    .tool-card {
        padding: 1.5rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        text-align: left;
        padding: 0.75rem 1rem;
    }
    
    .range-inputs {
        grid-template-columns: 1fr;
    }
    
    .file-upload-area {
        padding: 2rem 1rem;
    }
    
    .download-btn,
    .reset-btn {
        width: 100%;
        margin-bottom: 0.5rem;
        margin-right: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.75rem;
    }
    
    .file-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .upload-icon {
        font-size: 2rem;
    }
}

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

.tab-content.active {
    animation: fadeIn 0.3s ease-in-out;
}

.result-section {
    animation: fadeIn 0.5s ease-in-out;
}

/* Print styles */
@media print {
    .header,
    .ad-banner,
    .footer {
        display: none;
    }
    
    .main {
        padding: 0;
    }
    
    * {
        background: white !important;
        color: black !important;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
button:focus,
input:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
    
    [data-theme="dark"] {
        --border-color: #ffffff;
        --text-secondary: #ffffff;
    }
}

/* Content Sections */
.content-section {
    padding: 4rem 2rem;
    background: var(--card-background);
}

.content-section.alt-bg {
    background: var(--background-secondary);
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

.content-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 700;
}

.content-section p {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.tool-card {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
    text-align: left;
    transition: all 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.tool-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tool-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    text-align: left;
}

/* Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.step p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.benefit-item {
    background: var(--background-primary);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
    text-align: left;
    transition: all 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    border-color: var(--accent-color);
}

.benefit-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.benefit-item p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    text-align: left;
}

/* Responsive Design for Content Sections */
@media (max-width: 768px) {
    .content-section {
        padding: 3rem 1rem;
    }
    
    .content-section h2 {
        font-size: 2rem;
    }
    
    .content-section p {
        font-size: 1.1rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .tool-card,
    .benefit-item {
        padding: 1.5rem;
    }
}

/* Policy Pages Styles */
.policy-container,
.about-container,
.contact-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
    line-height: 1.7;
}

.policy-container h1,
.about-container h1,
.contact-container h1 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 700;
}

.last-updated {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 3rem;
}

.policy-section {
    margin-bottom: 3rem;
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
}

.policy-section h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.policy-section h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.policy-section ul {
    margin: 1rem 0;
    padding-left: 2rem;
}

.policy-section li {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.policy-section a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.policy-section a:hover {
    text-decoration: underline;
}

.policy-footer {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    margin-top: 3rem;
}

/* About Page Styles */
.page-hero, .about-hero { /* unify hero style */
    text-align: center;
    padding: 3rem 2rem;
    background: var(--background-secondary);
    border-radius: 1rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    font-weight: 300;
}

.mission-list {
    list-style: none;
    padding: 0;
}

.mission-list li {
    background: var(--background-secondary);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature-item {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.feature-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tech-stack,
.commitments,
.user-types,
.security-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.tech-item,
.commitment-item,
.user-type,
.security-item {
    background: var(--background-secondary);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
}

.roadmap {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    border-left: 4px solid var(--accent-color);
}

.roadmap li {
    margin: 1rem 0;
    font-size: 1.1rem;
}

.cta-section {
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 1rem;
}

.cta-button {
    display: inline-block;
    background: white;
    color: var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.2rem;
    margin-top: 1rem;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: var(--background-secondary);
    transform: translateY(-2px);
}

/* Contact Page Styles */
.contact-hero {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--background-secondary);
    border-radius: 1rem;
    margin-bottom: 2rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin: 2rem 0;
}

.contact-methods,
.contact-form-section {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
}

.contact-method {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--background-secondary);
    border-radius: 0.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

/* Dark mode specific form styles */
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea {
    background: var(--input-background);
    color: var(--input-text);
    border-color: var(--border-color);
}

[data-theme="dark"] .form-group select {
    background: var(--dropdown-background);
    color: var(--dropdown-text);
}

[data-theme="dark"] .form-group select option {
    background: var(--dropdown-background);
    color: var(--dropdown-text);
}

[data-theme="dark"] .form-group select option:hover,
[data-theme="dark"] .form-group select option:focus {
    background: var(--dropdown-hover);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.submit-button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.form-note {
    background: var(--background-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-align: center;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #34d399;
}

.form-status.error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #f87171;
}

.form-status.info {
    background: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #60a5fa;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.faq-item {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feedback-types,
.support-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feedback-item,
.support-tip {
    background: var(--background-secondary);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
}

.contact-footer {
    text-align: center;
    background: var(--card-background);
    padding: 3rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
}

.quick-links {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.quick-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 2px solid var(--primary-color);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.quick-link:hover {
    background: var(--primary-color);
    color: white;
}

/* Responsive Design for New Pages */
@media (max-width: 768px) {
    .policy-container,
    .about-container,
    .contact-container {
        padding: 1rem;
    }
    
    .policy-container h1,
    .about-container h1,
    .contact-container h1 {
        font-size: 2.5rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .features-grid,
    .tech-stack,
    .commitments,
    .user-types,
    .security-features,
    .faq-grid,
    .feedback-types,
    .support-tips {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .quick-links {
        flex-direction: column;
        align-items: center;
    }
}