/* CSS Variables / Design System */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary-color: #64748b;
    --secondary-hover: #475569;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --danger-light: #fee2e2;
    --warning-color: #f59e0b;

    --bg-color: #f8fafc;
    --bg-white: #ffffff;
    --bg-gray: #f1f5f9;
    --bg-dark: #1e293b;

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;

    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    --transition: all 0.2s ease;
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   MAIN NAVIGATION HEADER
   ======================================== */
.main-header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 32px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
}

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

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    display: block;
    padding: 10px 16px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

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

/* Dropdown Menu */
.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    padding: 8px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 16px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   BREADCRUMBS
   ======================================== */
.breadcrumbs {
    background: var(--bg-gray);
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumbs ol {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    font-size: 14px;
}

.breadcrumbs li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumbs li:not(:last-child)::after {
    content: '›';
    color: var(--text-light);
}

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

.breadcrumbs a:hover {
    text-decoration: underline;
}

.breadcrumbs li:last-child span {
    color: var(--text-secondary);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, #7c3aed 100%);
    color: white;
    padding: 48px 0;
    text-align: center;
}

.hero h1 {
    font-size: clamp(24px, 5vw, 40px);
    font-weight: 700;
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   CONTEXTUAL INTRO
   ======================================== */
.contextual-intro {
    background: var(--bg-white);
    padding: 48px 0;
    border-bottom: 1px solid var(--border-color);
}

.intro-content {
    max-width: 900px;
}

.intro-content h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.intro-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
    font-size: 16px;
}

.intro-content p:last-child {
    margin-bottom: 0;
}

/* ========================================
   TOOLS NAVIGATION
   ======================================== */
.tools-nav {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 32px 0;
}

.tools-heading {
    text-align: center;
    font-size: 20px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    background: var(--bg-gray);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.tool-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

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

.tool-icon {
    font-size: 28px;
}

.tool-name {
    font-size: 13px;
    font-weight: 600;
    text-align: center;
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
    padding: 40px 0;
    min-height: 50vh;
}

/* Tool Sections */
.tool-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tool-section.active {
    display: block;
}

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

.tool-section h2 {
    font-size: 28px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.tool-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 16px;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-white);
    margin-bottom: 24px;
}

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

.upload-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
}

.upload-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.upload-subtext {
    color: var(--text-secondary);
    font-size: 14px;
}

/* File List */
.file-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: grab;
    transition: var(--transition);
}

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

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

.file-item .drag-handle {
    color: var(--text-light);
    font-size: 20px;
    cursor: grab;
}

.file-item .file-icon {
    font-size: 24px;
}

.file-item .file-info {
    flex: 1;
}

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

.file-item .file-size {
    font-size: 13px;
    color: var(--text-secondary);
}

.file-item .file-remove {
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 20px;
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.file-item .file-remove:hover {
    background: var(--danger-light);
}

/* Page Preview Container */
.page-preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.page-preview-container.sortable .page-preview {
    cursor: grab;
}

.page-preview {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.page-preview:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.page-preview.selected {
    border-color: var(--danger-color);
    background: var(--danger-light);
}

.page-preview.selected::after {
    content: '✕';
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--danger-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
}

.page-preview.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

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

.page-preview .page-number {
    text-align: center;
    padding: 8px;
    background: var(--bg-gray);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.page-preview .page-actions {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 8px;
    background: var(--bg-gray);
}

.page-preview .page-actions button {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
}

.page-preview .page-actions button:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

/* Image Preview Container */
.image-preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.image-preview {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    cursor: grab;
    position: relative;
}

.image-preview:hover {
    box-shadow: var(--shadow-lg);
}

.image-preview.dragging {
    opacity: 0.5;
}

.image-preview img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
}

.image-preview .image-name {
    text-align: center;
    padding: 8px;
    background: var(--bg-gray);
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.image-preview .image-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--danger-color);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

/* Split Options */
.split-options {
    background: var(--bg-white);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 15px;
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.range-input {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.range-input input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 15px;
    margin-bottom: 8px;
}

.range-input input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.range-input small {
    color: var(--text-secondary);
    font-size: 13px;
}

/* Buttons */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    text-decoration: none;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-gray);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

.btn-icon {
    font-size: 18px;
}

/* Progress Overlay */
.progress-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.progress-overlay.active {
    display: flex;
}

.progress-content {
    background: var(--bg-white);
    padding: 40px 60px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

#progress-text {
    font-size: 16px;
    color: var(--text-primary);
}

/* ========================================
   USER GUIDE & FAQ SECTION
   ======================================== */
.user-guide-faq {
    background: var(--bg-white);
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

.guide-content {
    max-width: 900px;
}

.guide-content > h2 {
    font-size: 28px;
    margin-bottom: 32px;
    color: var(--text-primary);
}

.guide-section {
    margin-bottom: 40px;
}

.guide-section h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.guide-section p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.faq-section h3 {
    font-size: 20px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.faq-item {
    background: var(--bg-gray);
    padding: 24px;
    border-radius: var(--border-radius);
    margin-bottom: 16px;
}

.faq-item h4 {
    font-size: 17px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features {
    background: var(--bg-gray);
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

.features h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* ========================================
   LATEST ARTICLES SECTION
   ======================================== */
.latest-articles {
    background: var(--bg-white);
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

.latest-articles h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 16px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.article-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.article-image {
    background: linear-gradient(135deg, var(--primary-light) 0%, #e0e7ff 100%);
    padding: 32px;
    text-align: center;
}

.article-icon {
    font-size: 48px;
}

.article-content {
    padding: 24px;
}

.article-category {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.article-content h3 {
    font-size: 18px;
    margin-bottom: 12px;
    line-height: 1.4;
}

.article-content h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.article-content h3 a:hover {
    color: var(--primary-color);
}

.article-content p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.6;
}

.article-date {
    color: var(--text-light);
    font-size: 13px;
}

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

/* ========================================
   SEO CONTENT SECTION
   ======================================== */
.seo-content {
    background: var(--bg-gray);
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

.seo-content h2 {
    font-size: 28px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.seo-text {
    max-width: 900px;
}

.seo-text h3 {
    font-size: 20px;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.seo-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.seo-text strong {
    color: var(--text-primary);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-white);
    text-decoration: none;
    margin-bottom: 16px;
}

.footer-brand .logo-text {
    font-size: 20px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-white);
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-note {
    font-size: 13px !important;
}

/* ========================================
   BLOG PAGE STYLES
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #7c3aed 100%);
    color: white;
    padding: 48px 0;
}

.page-header h1 {
    font-size: clamp(28px, 5vw, 42px);
    margin-bottom: 12px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
}

/* Blog Index */
.blog-index {
    padding: 60px 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.blog-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.blog-card-image {
    background: linear-gradient(135deg, var(--primary-light) 0%, #e0e7ff 100%);
    padding: 40px;
    text-align: center;
}

.blog-card-image .blog-icon {
    font-size: 56px;
}

.blog-card-content {
    padding: 28px;
}

.blog-card-content h2 {
    font-size: 20px;
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-card-content h2 a {
    color: var(--text-primary);
    text-decoration: none;
}

.blog-card-content h2 a:hover {
    color: var(--primary-color);
}

.blog-card-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--text-light);
    font-size: 13px;
}

/* Blog Post */
.blog-post {
    padding: 60px 0;
}

.blog-post-container {
    max-width: 800px;
    margin: 0 auto;
}

.blog-post-header {
    margin-bottom: 40px;
}

.blog-post-header h1 {
    font-size: clamp(28px, 4vw, 38px);
    margin-bottom: 16px;
    line-height: 1.3;
}

.blog-post-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.blog-post-content {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-primary);
}

.blog-post-content h2 {
    font-size: 26px;
    margin: 40px 0 20px;
    color: var(--text-primary);
}

.blog-post-content h3 {
    font-size: 22px;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.blog-post-content p {
    margin-bottom: 20px;
}

.blog-post-content ul,
.blog-post-content ol {
    margin: 20px 0;
    padding-left: 24px;
}

.blog-post-content li {
    margin-bottom: 10px;
}

.blog-post-content a {
    color: var(--primary-color);
    text-decoration: underline;
}

.blog-post-content strong {
    font-weight: 600;
}

.blog-post-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--bg-gray);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
}

/* CTA Box in Blog */
.cta-box {
    background: linear-gradient(135deg, var(--primary-light) 0%, #e0e7ff 100%);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    margin: 40px 0;
    text-align: center;
}

.cta-box h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.cta-box p {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

/* Related Posts */
.related-posts {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.related-posts h3 {
    font-size: 24px;
    margin-bottom: 24px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

/* ========================================
   STATIC PAGES (About, Contact, Legal)
   ======================================== */
.static-page {
    padding: 60px 0;
}

.static-content {
    max-width: 800px;
    margin: 0 auto;
}

.static-content h1 {
    font-size: 32px;
    margin-bottom: 24px;
}

.static-content h2 {
    font-size: 24px;
    margin: 40px 0 16px;
}

.static-content h3 {
    font-size: 20px;
    margin: 32px 0 12px;
}

.static-content p {
    margin-bottom: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.static-content ul {
    margin: 16px 0;
    padding-left: 24px;
}

.static-content li {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.static-content a {
    color: var(--primary-color);
}

/* Contact Form */
.contact-form {
    background: var(--bg-white);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-top: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation */
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 16px;
        border-top: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: 16px;
        background: transparent;
    }

    .hero {
        padding: 32px 0;
    }

    .hero h1 {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .tool-btn {
        padding: 12px 8px;
    }

    .tool-icon {
        font-size: 24px;
    }

    .tool-name {
        font-size: 11px;
    }

    .main-content {
        padding: 24px 0;
    }

    .tool-section h2 {
        font-size: 22px;
    }

    .upload-area {
        padding: 32px 16px;
    }

    .upload-icon {
        font-size: 36px;
    }

    .page-preview-container,
    .image-preview-container {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 12px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 14px;
    }

    .features,
    .latest-articles,
    .seo-content,
    .user-guide-faq {
        padding: 40px 0;
    }

    .features h2,
    .latest-articles h2 {
        font-size: 24px;
    }

    .feature-card {
        padding: 24px 16px;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-brand {
        grid-column: span 1;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .contextual-intro {
        padding: 32px 0;
    }
}

@media (max-width: 480px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .blog-post-content {
        font-size: 16px;
    }

    .contact-form {
        padding: 24px;
    }
}

/* Print Styles */
@media print {
    .main-header,
    .tools-nav,
    .upload-area,
    .action-buttons,
    .footer,
    .breadcrumbs,
    .latest-articles,
    .cta-box {
        display: none;
    }

    .blog-post-content {
        font-size: 12pt;
    }
}