/* PDF Editor Pro - Professional Stylesheet */
/* Mobile-responsive, accessible, and modern design */

/* ========================================
   CSS VARIABLES
======================================== */
:root {
    --primary-color: #3a86ff;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s ease;
}

/* ========================================
   RESET & BASE STYLES
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-800);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
    transition: var(--transition);
}

input, select, textarea {
    font-family: inherit;
    outline: none;
}

/* ========================================
   UTILITY CLASSES
======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.highlight {
    color: var(--primary-color);
    font-weight: 700;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================
   NAVIGATION
======================================== */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

.logo i {
    color: var(--primary-color);
    font-size: 2rem;
}

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

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--gray-700);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
}

/* ========================================
   BUTTONS
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background: var(--gray-300);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(58, 134, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.or-text {
    text-align: center;
    color: var(--gray-500);
    font-size: 0.9rem;
    margin: -0.5rem 0;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-700);
    font-weight: 500;
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* PDF Preview */
.pdf-preview {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    width: 100%;
    max-width: 500px;
}

.pdf-preview-header {
    background: var(--gray-100);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pdf-preview-dots {
    display: flex;
    gap: 0.25rem;
}

.pdf-preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-300);
}

.pdf-preview-dots span:first-child {
    background: #ef4444;
}

.pdf-preview-dots span:nth-child(2) {
    background: #f59e0b;
}

.pdf-preview-dots span:last-child {
    background: #10b981;
}

.pdf-preview-title {
    flex: 1;
    font-size: 0.9rem;
    color: var(--gray-600);
    text-align: center;
}

.pdf-preview-content {
    padding: 2rem;
}

.pdf-viewer-placeholder {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border: 2px dashed var(--gray-300);
}

.pdf-viewer-placeholder i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.pdf-viewer-placeholder h3 {
    font-size: 1.5rem;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.pdf-viewer-placeholder p {
    color: var(--gray-500);
}

.pdf-tools {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.tool-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.tool-icon:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.tool-icon i {
    font-size: 1.2rem;
}

/* ========================================
   PDF EDITOR SECTION
======================================== */
.pdf-editor-section {
    padding: 3rem 0;
    background: var(--gray-50);
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.editor-header h3 {
    font-size: 1.8rem;
    color: var(--dark-color);
}

.editor-actions {
    display: flex;
    gap: 1rem;
}

.editor-container {
    display: grid;
    grid-template-columns: 250px 1fr 280px;
    gap: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
}

.editor-sidebar {
    border-right: 1px solid var(--gray-200);
    padding-right: 1.5rem;
}

.editor-sidebar h4,
.editor-properties h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.tool-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    color: var(--gray-700);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.tool-item:hover {
    background: var(--primary-light);
    color: var(--white);
}

.tool-item.active {
    background: var(--primary-color);
    color: var(--white);
}

.tool-item i {
    font-size: 1.1rem;
    width: 20px;
}

.sidebar-section {
    margin-top: 2rem;
}

.page-thumbnails {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.page-thumbnail {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.page-thumbnail:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.page-thumbnail.active {
    border-color: var(--primary-color);
    background: rgba(58, 134, 255, 0.1);
}

.thumbnail-page-number {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
}

.page-thumbnail canvas {
    max-width: 100%;
    height: auto;
}

.editor-main {
    min-height: 600px;
}

.pdf-viewer-container {
    background: var(--gray-100);
    border-radius: var(--border-radius);
    padding: 1rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
}

.pdf-canvas {
    max-width: 100%;
    height: auto;
    box-shadow: var(--shadow-md);
}

.editor-properties {
    border-left: 1px solid var(--gray-200);
    padding-left: 1.5rem;
}

.properties-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.property-group label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.property-group input[type="color"] {
    width: 100%;
    height: 40px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    cursor: pointer;
}

.property-group input[type="range"] {
    width: 100%;
    cursor: pointer;
}

#fontSizeValue {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.page-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--gray-100);
    border-radius: var(--border-radius);
}

.page-nav button {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.page-nav button:hover {
    background: var(--primary-dark);
}

.page-nav button:disabled {
    background: var(--gray-400);
    cursor: not-allowed;
}

/* ========================================
   FEATURES SECTION
======================================== */
.features {
    padding: 5rem 0;
    background: var(--white);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 3rem;
}

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

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    color: var(--white);
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.8;
}

/* ========================================
   HOW IT WORKS SECTION
======================================== */
.how-it-works {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: var(--white);
    font-size: 1.8rem;
    font-weight: 700;
    border-radius: 50%;
    position: relative;
    z-index: 1;
}

.step-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    font-size: 2.5rem;
    color: var(--primary-color);
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.step p {
    color: var(--gray-600);
    line-height: 1.8;
}

/* ========================================
   COMPATIBILITY SECTION
======================================== */
.compatibility {
    padding: 5rem 0;
    background: var(--white);
}

.devices {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.device {
    text-align: center;
    padding: 2rem;
    background: var(--gray-50);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

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

.device i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.device h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.device p {
    color: var(--gray-600);
}

/* ========================================
   BLOG SECTION
======================================== */
.blog-section {
    padding: 5rem 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.blog-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

.blog-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.blog-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.blog-card p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    gap: 0.75rem;
}

/* ========================================
   FOOTER
======================================== */
.footer {
    background: var(--gray-800);
    color: var(--gray-300);
    padding: 3rem 0 1.5rem;
}

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

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-section h4 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

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

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

.footer-section a {
    color: var(--gray-300);
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-description {
    line-height: 1.8;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-700);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

.footer-bottom a {
    color: var(--primary-light);
}

/* ========================================
   MODAL
======================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s ease;
}

.modal[aria-hidden="false"] {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--gray-500);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--dark-color);
}

.modal-body {
    padding: 2rem;
}

.upload-area {
    border: 3px dashed var(--gray-300);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(58, 134, 255, 0.05);
}

.upload-area.drag-over {
    border-color: var(--primary-color);
    background: rgba(58, 134, 255, 0.1);
}

.upload-area i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-area h4 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.upload-area p {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.file-size-info {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.recent-files {
    margin-top: 2rem;
}

.recent-files h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.file-item:hover {
    background: var(--gray-100);
}

.file-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.file-name {
    font-weight: 600;
    color: var(--dark-color);
}

.file-size {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.file-action {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.file-action:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

/* ========================================
   ANIMATIONS
======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */
/* Tablet */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .editor-container {
        grid-template-columns: 1fr;
    }
    
    .editor-sidebar,
    .editor-properties {
        border: none;
        padding: 0;
    }
    
    .pdf-editor-section {
        padding: 2rem 0;
    }
}

/* Mobile */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-actions .btn {
        display: none;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cta-buttons {
        gap: 0.75rem;
    }
    
    .btn-large {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid,
    .steps-container,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .pdf-preview {
        max-width: 100%;
    }
    
    .page-thumbnails {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .editor-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .editor-actions {
        width: 100%;
        justify-content: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .step-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .page-thumbnails {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
}

/* Print styles */
@media print {
    .navbar,
    .footer,
    .modal,
    .cta-buttons,
    .editor-sidebar,
    .editor-properties {
        display: none !important;
    }
    
    .pdf-editor-section {
        padding: 0;
    }
    
    .editor-container {
        display: block;
    }
    
    .pdf-viewer-container {
        border: none;
        box-shadow: none;
    }
}

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

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --gray-600: #000000;
    }
    
    .btn-primary {
        border: 2px solid #000;
    }
}