:root {
    
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #8b5cf6;
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --accent-color: #f59e0b;
    --accent-light: #fbbf24;
    
    
    --white: #ffffff;
    --gray-50: #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;
    --gray-900: #111827;
    --black: #000000;
    
    
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    --gradient-dark: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%);
    
    
    --font-family: 'Inter', system-ui, -apple-system, 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: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}


.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}


h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
}

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-4);
    color: var(--gray-600);
}

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

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


.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--gradient-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

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

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    color: var(--gray-900);
}


.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: var(--z-fixed);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-brand i {
    font-size: var(--font-size-2xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

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

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 250px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-normal);
    z-index: var(--z-dropdown);
}

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

.dropdown-content a {
    display: block;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--gray-700);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.dropdown-content a:hover {
    background: var(--gray-50);
    color: var(--primary-color);
}

.search-btn {
    padding: var(--spacing-2);
    border-radius: var(--radius-full);
    background: var(--gray-100);
    transition: var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: var(--spacing-1);
    cursor: pointer;
    padding: var(--spacing-2);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}


.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-primary);
    overflow: hidden;
    place-content: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="600" cy="700" r="120" fill="url(%23a)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    text-align: center;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    margin-bottom: var(--spacing-6);
    color: var(--white);
}

.highlight {
    background: linear-gradient(45deg, var(--accent-color), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    margin-bottom: var(--spacing-16);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-8);
    max-width: 600px;
    margin: 0 auto;
}

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

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}


.page-header {
    padding: var(--spacing-24) 0 var(--spacing-16);
    background: var(--gradient-dark);
    color: var(--white);
    text-align: center;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-sm);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.5);
}

.page-header h1 {
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.page-header p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-lg);
}


.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-header h2 {
    margin-bottom: var(--spacing-4);
}

.section-header p {
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
}


.featured-categories {
    padding: var(--spacing-24) 0;
    background: var(--gray-50);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}
@media (min-width: 1200px) {
    .categories-grid {
        grid-template-columns: repeat(5, 1fr) !important;
    }
}

.category-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    cursor: pointer;
    border: 1px solid var(--gray-200);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.category-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-2xl);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-3xl);
    color: var(--white);
}

.category-card h3 {
    margin-bottom: var(--spacing-3);
    color: var(--gray-900);
}

.category-card p {
    margin-bottom: var(--spacing-6);
    color: var(--gray-600);
}

.category-stats {
    display: flex;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    justify-content: end;
}

.category-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition-fast);
}

.category-link:hover {
    gap: var(--spacing-3);
}


.featured-articles {
    padding: var(--spacing-24) 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.article-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--gray-200);
}

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

.article-card.featured {
    grid-column: span 2;
}

.article-image {
    height: 200px;
    background: var(--gradient-secondary);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-card.featured .article-image {
    height: 300px;
}

.article-category {
    position: absolute;
    top: var(--spacing-4);
    left: var(--spacing-4);
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.article-content {
    padding: var(--spacing-6);
}

.article-content h3 {
    margin-bottom: var(--spacing-3);
    color: var(--gray-900);
}

.article-content p {
    margin-bottom: var(--spacing-4);
    color: var(--gray-600);
}

.article-meta {
    display: flex;
    gap: var(--spacing-4);
    margin-top: 120px;
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.article-link {
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition-fast);
}

.article-link:hover {
    color: var(--primary-dark);
}


.newsletter {
    padding: var(--spacing-24) 0;
    background: var(--gradient-dark);
    color: var(--white);
}

.newsletter-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

.newsletter-text h2 {
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.newsletter-text p {
    color: rgba(255, 255, 255, 0.8);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-4);
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-4);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
}


.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-20) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-12);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.footer-brand i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
}

.footer-section p {
    color: var(--gray-400);
    margin-bottom: var(--spacing-6);
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-lg);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-2);
}

.footer-section ul li a {
    color: var(--gray-400);
    transition: var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-4);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    color: var(--gray-400);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--gray-800);
    color: var(--gray-400);
}


.category-filter {
    padding: var(--spacing-8) 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.filter-tabs {
    padding-top: 30px;
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
    overflow-x: auto;
    padding-bottom: var(--spacing-2);
}

.filter-tab {
    padding: var(--spacing-3) var(--spacing-6);
    background: transparent;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-full);
    color: var(--gray-700);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.filter-tab.active,
.filter-tab:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.filter-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-4);
}

.filter-controls select {
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    font-size: var(--font-size-sm);
}

.view-toggle {
    display: flex;
    gap: var(--spacing-1);
}

.view-btn {
    padding: var(--spacing-2);
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-fast);
}

.view-btn:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.view-btn:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

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


.articles-section {
    padding: var(--spacing-16) 0;
}

.articles-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.difficulty-badge {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.difficulty-badge.beginner {
    background: var(--secondary-color);
    color: var(--white);
}

.difficulty-badge.intermediate {
    background: var(--accent-color);
    color: var(--white);
}

.difficulty-badge.advanced {
    background: #ef4444;
    color: var(--white);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.article-tags h3 {
    margin-bottom: 0px;
    align-content: center;
}

.tag {
    padding: 12px;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
}

.load-more-container {
    text-align: center;
    margin-top: var(--spacing-16);
}


.article-header {
    padding: var(--spacing-24) 0 var(--spacing-16);
    background: var(--gradient-dark);
    color: var(--white);
}

.article-meta-header {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.article-category-badge {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.article-difficulty {
    background: var(--secondary-color);
    color: var(--white);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.article-excerpt {
    margin-bottom: var(--spacing-8);
}

.article-excerpt p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.author-avatar {
    font-size: var(--font-size-4xl);
    color: var(--primary-color);
}

.author-details {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--white);
}

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

.article-stats {
    display: flex;
    gap: var(--spacing-6);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

.article-actions {
    display: flex;
    gap: var(--spacing-4);
}

.action-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}


.article-content-section {
    padding: var(--spacing-16) 0;
}

.article-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-12);
}

.article-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding-right: 8px;
}

.article-sidebar::-webkit-scrollbar {
    width: 6px;
}

.article-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.article-sidebar::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

.article-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

.table-of-contents {
    background: var(--gray-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-8);
}

.table-of-contents h3 {
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
}

.table-of-contents ul {
    list-style: none;
}

.table-of-contents li {
    margin-bottom: var(--spacing-2);
}

.table-of-contents a {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
}

.table-of-contents a:hover {
    color: var(--primary-color);
}

.related-articles {
    background: var(--gray-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
}

.related-articles h3 {
    margin-bottom: var(--spacing-4);
}

.related-item {
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--gray-200);
}

.related-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.related-item h4 {
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.related-item span {
    color: var(--gray-500);
    font-size: var(--font-size-xs);
}

.article-main {
    max-width: none;
}

.article-content {
    line-height: 1.7;
}

.article-content h2 {
    margin-top: var(--spacing-12);
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-3);
    border-bottom: 2px solid var(--gray-200);
}

.article-content h3 {
    margin-top: var(--spacing-8);
    margin-bottom: var(--spacing-4);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-6);
    padding-left: var(--spacing-6);
}

.article-content li {
    margin-bottom: var(--spacing-2);
    color: var(--gray-600);
}

.callout-box,
.pro-tip,
.warning-box,
.info-box {
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    margin: var(--spacing-8) 0;
    border-left: 4px solid;
}

.callout-box {
    background: #f0f9ff;
    border-color: var(--primary-color);
}

.pro-tip {
    background: #f0fdf4;
    border-color: var(--secondary-color);
}

.warning-box {
    background: #fefce8;
    border-color: var(--accent-color);
}

.info-box {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.callout-box h3,
.pro-tip h4,
.warning-box h4,
.info-box h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}


.form-group {
    margin-bottom: var(--spacing-6);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-4);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition-fast);
}

.checkbox-label input:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: var(--font-size-xs);
}


.search-section {
    padding: var(--spacing-24) 0 var(--spacing-16);
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.search-header h1 {
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.search-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-12);
}

.search-form-container {
    max-width: 800px;
    margin: 0 auto var(--spacing-12);
}

.search-input-group {
    position: relative;
    margin-bottom: var(--spacing-6);
}

.search-input-group input {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-16) var(--spacing-4) var(--spacing-6);
    border: none;
    border-radius: var(--radius-2xl);
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-xl);
}

.search-btn-submit {
    position: absolute;
    right: var(--spacing-2);
    top: 50%;
    transform: translateY(-50%);
    padding: var(--spacing-3);
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition-fast);
}

.search-filters {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
}

.search-filters select {
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    backdrop-filter: blur(10px);
}

.search-suggestions {
    max-width: 800px;
    margin: 0 auto;
}

.search-suggestions h3 {
    color: var(--white);
    margin-bottom: var(--spacing-6);
}

.suggestion-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    justify-content: center;
}

.suggestion-tag {
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.suggestion-tag:hover {
    background: rgba(255, 255, 255, 0.2);
}


.contact-section {
    padding: var(--spacing-16) 0;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
}

.contact-methods {
    margin: var(--spacing-8) 0;
}

.contact-method {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.method-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
}

.method-info h3 {
    margin-bottom: var(--spacing-2);
}

.method-info p {
    font-weight: 500;
    color: var(--gray-900);
    margin-bottom: var(--spacing-1);
}

.method-info span {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

.contact-form-container {
    background: var(--gray-50);
    padding: var(--spacing-8);
    border-radius: var(--radius-2xl);
}


.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none; }
.visible { display: block; }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }


.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

.bounce-in {
    animation: bounceIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}


.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}


.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--gradient-primary);
    z-index: var(--z-fixed);
    transition: width 0.3s ease;
}


.auth-section {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
}

.auth-container {
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.auth-card {
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 2rem;
    color: #1a202c;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: #64748b;
    font-size: 1rem;
}

.forgot-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.5rem;
}

.auth-form {
    margin-bottom: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.password-input-group {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    padding: 0.25rem;
}

.password-requirements {
    margin-top: 0.25rem;
}

.password-requirements small {
    color: #6b7280;
    font-size: 0.875rem;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.875rem;
    color: #374151;
}

.checkbox-label input {
    margin-right: 0.5rem;
}

.forgot-link {
    color: var(--primary-color);
    font-size: 0.875rem;
    text-decoration: none;
}

.forgot-link:hover {
    text-decoration: underline;
}

.btn-full {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    font-weight: 600;
}

.auth-footer {
    text-align: center;
    border-top: 1px solid #e5e7eb;
    padding-top: 1.5rem;
}

.auth-footer p {
    color: #6b7280;
    margin: 0;
}

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

.auth-footer a:hover {
    text-decoration: underline;
}

.auth-features {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    height: fit-content;
}

.auth-features h3 {
    color: #1a202c;
    margin-bottom: 1.5rem;
    text-align: center;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #374151;
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.25rem;
    width: 20px;
    text-align: center;
}

.forgot-password-container {
    grid-template-columns: 1fr 350px;
}

.auth-help {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    height: fit-content;
}

.auth-help h3 {
    color: #1a202c;
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.help-item {
    display: flex;
    gap: 1rem;
}

.help-item i {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.help-item h4 {
    color: #1a202c;
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
}

.help-item p {
    color: #6b7280;
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.5;
}


.legal-content {
    padding: 2rem 0 4rem;
}

.content-layout {
    display: flex;
    /* grid-template-columns: 250px 1fr; */
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.legal-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.legal-main {
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.legal-text h2 {
    color: #1a202c;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
}

.legal-text h2:first-child {
    margin-top: 0;
}

.legal-text h3 {
    color: #374151;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.legal-text p {
    margin-bottom: 1rem;
    line-height: 1.7;
    color: #4b5563;
}

.legal-text ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.legal-text li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    color: #4b5563;
}

.contact-details {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid #e2e8f0;
    margin-top: 1rem;
}

.contact-details h3 {
    color: #1a202c;
    margin-top: 0;
    margin-bottom: 1rem;
}

.last-updated {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #6b7280;
    font-size: 0.875rem;
    margin-top: 1rem;
}


.nav-link.auth-link {
    color: var(--primary-color) !important;
    font-weight: 600 !important;
}

.nav-link.auth-link::after {
    display: none !important;
}

.nav-link.btn-register {
    background: var(--primary-color) !important;
    color: white !important;
    border-radius: 25px !important;
    padding: 0.75rem 1.5rem !important;
    margin-left: 1rem !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2) !important;
    border: none !important;
}

.nav-link.btn-register::after {
    display: none !important;
}

.nav-link.btn-register:hover {
    background: var(--secondary-color) !important;
    transform: translateY(-2px) !important;
    color: white !important;
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3) !important;
}


@media (max-width: 991px) {
    .nav-toggle {
        display: flex !important;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-menu.active {
        display: flex !important;
    }
}





@media (max-width: 991px) {
    .nav-link.auth-link,
    .nav-link.btn-register {
        display: block !important;
        width: 100% !important;
    }
    
    .auth-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }
    
    .auth-card {
        padding: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

@media (max-width: 768px) {
    .auth-section {
        padding: 100px 0 60px;
    }
    
    .auth-card {
        padding: 1.5rem;
    }
    
    .auth-header h1 {
        font-size: 1.75rem;
    }
    
    .form-input {
        padding: 0.875rem;
    }
}


.contact-section {
    padding: 4rem 0;
    background: #f8fafc;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info h2 {
    color: #1f2937;
    margin-bottom: 1rem;
    font-size: 2rem;
}

.contact-info > p {
    color: #6b7280;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.contact-methods {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.contact-method:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.method-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.method-info {
    align-self: center;
}

.method-info h3 {
    color: #1f2937;
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
}

.method-info p {
    color: #374151;
    margin: 0 0 0.25rem 0;
    font-weight: 500;
}

.method-info span {
    color: #6b7280;
    font-size: 0.9rem;
}

.contact-form-container {
    background: white;
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.form-header {
    margin-bottom: 2rem;
}

.form-header h2 {
    color: #1f2937;
    margin-bottom: 0.5rem;
    font-size: 1.75rem;
}

.form-header p {
    color: #6b7280;
    margin: 0;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

.contact-form .form-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.contact-form .form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.contact-form textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

.contact-form select.form-input {
    cursor: pointer;
}

.contact-form .btn {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.contact-form .btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.newsletter-subscription {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.newsletter-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.newsletter-header i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.newsletter-header h4 {
    color: #1f2937;
    margin: 0;
    font-size: 1.1rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    color: #374151;
    line-height: 1.5;
}

.checkbox-label input {
    margin: 0;
    margin-top: 0.25rem;
    width: 16px;
    height: 16px;
}

.checkbox-label input:checked {
    accent-color: var(--primary-color);
}


@media (max-width: 991px) {
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-form-container {
        padding: 2rem;
    }
    
    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

@media (max-width: 768px) {
    .contact-section {
        padding: 2rem 0;
    }
    
    .contact-form-container {
        padding: 1.5rem;
    }
    
    .form-header h2 {
        font-size: 1.5rem;
    }
    
    .contact-info h2 {
        font-size: 1.75rem;
    }
    
    .contact-method {
        padding: 1rem;
    }
}


.search-section {
    padding: 4rem 0 3rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.search-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.search-header p {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.search-form-container {
    max-width: 800px;
    margin: 0 auto;
}

.search-input-group {
    position: relative;
    margin-bottom: 2rem;
}

.search-input-group input {
    width: 100%;
    padding: 1.25rem 1.5rem;
    padding-right: 60px;
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    outline: none;
    background: white;
}

.search-btn-submit {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-btn-submit:hover {
    background: var(--primary-dark);
    transform: translateY(-50%) scale(1.05);
}

.search-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.search-filters select {
    padding: 0.75rem 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.search-filters select option {
    background: #1f2937;
    color: white;
}

.search-suggestions {
    margin-top: 3rem;
}

.search-suggestions h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.suggestion-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.suggestion-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.suggestion-tag:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}


.search-results-section {
    padding: 4rem 0;
    background: #f8fafc;
}

.results-header {
    margin-bottom: 2rem;
    text-align: center;
}

.results-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.results-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: #6b7280;
}

.results-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
}

.no-results-content {
    max-width: 600px;
    margin: 0 auto;
}

.no-results i {
    font-size: 4rem;
    color: #d1d5db;
    margin-bottom: 2rem;
}

.no-results h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #374151;
}

.no-results p {
    font-size: 1.1rem;
    color: #6b7280;
    margin-bottom: 2rem;
}

.no-results-suggestions {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    text-align: left;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.no-results-suggestions h4 {
    margin-bottom: 1rem;
    color: #374151;
}

.no-results-suggestions ul {
    list-style: none;
    padding: 0;
}

.no-results-suggestions li {
    padding: 0.5rem 0;
    color: #6b7280;
    position: relative;
    padding-left: 1.5rem;
}

.no-results-suggestions li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}


.quick-categories {
    padding: 4rem 0;
    background: white;
}

.quick-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.quick-category {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.quick-category:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

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

.category-icon i {
    font-size: 2rem;
    color: white;
}

.quick-category h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.quick-category span {
    color: #6b7280;
    font-size: 0.9rem;
}


.search-tips {
    padding: 4rem 0;
    background: #f3f4f6;
}

.search-tips-content h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: #1f2937;
}

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

.tip-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.tip-item:hover {
    transform: translateY(-2px);
}

.tip-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.tip-item h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.tip-item p {
    color: #6b7280;
    line-height: 1.6;
}


@media (max-width: 768px) {
    .search-header h1 {
        font-size: 2rem;
    }
    
    .search-header p {
        font-size: 1rem;
    }
    
    .search-filters {
        grid-template-columns: 1fr;
    }
    
    .suggestion-tags {
        justify-content: flex-start;
    }
    
    .results-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .results-container {
        grid-template-columns: 1fr;
    }
    
    .quick-categories-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .search-section {
        padding: 2rem 0;
    }
}

@media (max-width: 480px) {
    .quick-category {
        padding: 1.5rem;
    }
    
    .category-icon {
        width: 60px;
        height: 60px;
    }
    
    .category-icon i {
        font-size: 1.5rem;
    }
    
    .search-input-group input {
        padding: 1rem;
        font-size: 1rem;
    }
    
    .search-btn-submit {
        width: 40px;
        height: 40px;
    }
}


.contact-cta {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.contact-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="20" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

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

.cta-content {
    text-align: left;
}

.cta-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.cta-icon i {
    font-size: 2.5rem;
    color: white;
}

.cta-content h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.6;
}

.cta-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
}

.cta-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    min-width: 250px;
    justify-content: center;
    text-align: center;
}

.cta-btn.primary {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-btn.primary:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.cta-btn.secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.cta-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-2px);
}

.cta-btn i {
    font-size: 1.2rem;
}


@media (max-width: 991px) {
    .cta-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .cta-content {
        text-align: center;
    }
    
    .cta-content h2 {
        font-size: 2.5rem;
    }
    
    .cta-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    .cta-actions {
        align-items: center;
        width: 100%;
    }
    
    .cta-btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    .contact-cta {
        padding: 3rem 0;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .cta-content p {
        font-size: 1.1rem;
    }
    
    .cta-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .cta-icon {
        width: 60px;
        height: 60px;
        margin: 0 auto 2rem;
    }
    
    .cta-icon i {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .cta-wrapper {
        gap: 2rem;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
    
    .cta-btn {
        padding: 1rem 1.5rem;
        font-size: 1rem;
        min-width: auto;
    }
}

.share-section {
    display: flex;
}

.share-buttons {
    align-items: center;
    margin-left: 10px;
    padding-top: 3px;
}

.load-more-section {
    margin-bottom: 30px;
    place-self: center;
}

@media (max-width: 768px) {
    .hero-content {
        margin-top: 50px;
    }
}

.category-card {
    display: block !important;
}

.articles-grid .article-card {
    display: block !important;
}

input[type="checkbox"] {
    display: none;
}

.article-header h1 {
    text-align: center;
    padding-top: 40px;
}

.article-subtitle {
    color: #fff;
    padding-top: 30px;
}

  .table-of-contents {
    min-width: 270px;
  }

@media (max-width: 768px) {
  .table-of-contents {
    display: none;
  }
  .content-layout {
    gap: 0;
  }
}