/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #0F172A;
    --accent-blue: #0EA5E9;
    --accent-green: #10B981;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    
    /* Typography */
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Lora', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Shadows */
    --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);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    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-md);
}

/* Header Styles */
.header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo a {
    text-decoration: none;
    color: var(--white);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.logo-subtitle {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-blue);
    margin-top: -2px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    color: var(--gray-300);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-blue);
    border-radius: 1px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--white);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gray-800) 100%);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--white) 0%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-300);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.hero-decoration {
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Main Content */
.main {
    padding: var(--spacing-3xl) 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-3xl);
    align-items: start;
}

/* Section Titles */
.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
    border-radius: 2px;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.article-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.article-card:nth-child(2) { animation-delay: 0.1s; }
.article-card:nth-child(3) { animation-delay: 0.2s; }
.article-card:nth-child(4) { animation-delay: 0.3s; }
.article-card:nth-child(5) { animation-delay: 0.4s; }
.article-card:nth-child(6) { animation-delay: 0.5s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

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

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.category {
    background: var(--accent-blue);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.date {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.article-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

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

.article-title a:hover {
    color: var(--accent-blue);
}

.article-excerpt {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.read-more {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--accent-green);
}

/* Sidebar Styles */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.sidebar-widget {
    background: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: 16px;
    border: 1px solid var(--gray-200);
}

.widget-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.categories-list {
    list-style: none;
}

.categories-list li {
    margin-bottom: var(--spacing-sm);
}

.categories-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray-600);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: 8px;
    transition: var(--transition);
}

.categories-list a:hover,
.categories-list a.active {
    background: var(--accent-blue);
    color: var(--white);
}

.categories-list span {
    font-size: 0.875rem;
    opacity: 0.8;
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag {
    background: var(--gray-200);
    color: var(--gray-700);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.tag:hover {
    background: var(--accent-blue);
    color: var(--white);
}

.widget-text {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.widget-link {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
}

/* Page Header */
.page-header {
    background: var(--gray-50);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--gray-200);
}

.breadcrumb {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: var(--spacing-md);
}

.breadcrumb a {
    color: var(--accent-blue);
    text-decoration: none;
}

.page-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
}

/* Article Page Styles */
.article-main {
    padding: 0;
}

.article-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.article-header {
    margin-bottom: var(--spacing-xl);
}

.article-title-main {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.article-meta-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

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

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

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

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

.publish-date {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.article-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.reading-time {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.category-badge {
    background: var(--accent-blue);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.article-featured-image {
    margin-bottom: var(--spacing-2xl);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.article-featured-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.article-body {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--gray-700);
}

.lead {
    font-size: 1.25rem;
    color: var(--gray-800);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-lg);
    border-left: 4px solid var(--accent-blue);
}

.article-body h2 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: var(--spacing-2xl) 0 var(--spacing-lg) 0;
}

.article-body p {
    margin-bottom: var(--spacing-lg);
}

.code-block {
    background: var(--gray-900);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
}

.code-block code {
    color: var(--gray-300);
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.article-body code:not(.code-block code) {
    background: var(--gray-100);
    color: var(--accent-blue);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.9em;
}

/* Related Articles */
.related-articles {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--gray-200);
}

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

.related-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: 12px;
    transition: var(--transition);
}

.related-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.related-card img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
}

.related-content h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

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

.related-content a:hover {
    color: var(--accent-blue);
}

.related-date {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* Category Page Styles */
.category-filter {
    background: var(--white);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.filter-tabs {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}

.filter-tab {
    background: var(--gray-100);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 25px;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.category-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-3xl);
    align-items: start;
}

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

.article-list-item {
    display: flex;
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.article-list-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.article-thumbnail {
    width: 250px;
    height: 180px;
    flex-shrink: 0;
}

.article-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-info {
    padding: var(--spacing-lg);
    flex: 1;
}

.article-info .article-meta {
    margin-bottom: var(--spacing-sm);
}

.reading-time {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.read-more-btn {
    display: inline-block;
    background: var(--accent-blue);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: var(--transition);
}

.read-more-btn:hover {
    background: var(--accent-green);
    transform: translateY(-1px);
}

/* About Page Styles */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-intro {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
    align-items: start;
}

.profile-image {
    width: 100%;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.intro-text {
    font-size: 1.25rem;
    color: var(--gray-700);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.about-sections {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
}

.about-sections h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

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

.skill-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.skill-item:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.skill-item h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.motivation-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.motivation-item h4 {
    font-size: 1.125rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.values-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.value-quote {
    background: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border-left: 4px solid var(--accent-blue);
    font-style: italic;
    font-size: 1.125rem;
    color: var(--gray-700);
}

.connect-section {
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--white);
    color: var(--gray-700);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 12px;
    text-decoration: none;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.social-link:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.social-icon {
    font-size: 1.25rem;
}

/* Contact Page Styles */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contact-intro {
    margin-bottom: var(--spacing-xl);
}

.contact-intro h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.contact-form {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-error {
    color: #EF4444;
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: block;
}

.submit-btn {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
    color: var(--white);
    border: none;
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.form-success {
    background: var(--accent-green);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
}

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

.contact-info-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-info-card {
    background: var(--gray-50);
    padding: var(--spacing-xl);
    border-radius: 16px;
    border: 1px solid var(--gray-200);
}

.contact-info-card h3 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.social-links-vertical {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.social-link-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-decoration: none;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.social-link-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.social-icon-wrapper {
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-info h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 2px;
}

.social-info p {
    color: var(--gray-600);
    font-size: 0.875rem;
    line-height: 1.4;
}

.response-info {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--gray-200);
}

.response-info h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.response-info ul {
    list-style: none;
    padding-left: 0;
}

.response-info li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.response-info li::before {
    content: '•';
    color: var(--accent-blue);
    position: absolute;
    left: 0;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-list {
        display: none;
    }
    
    .content-wrapper,
    .category-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .sidebar {
        order: -1;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-list-item {
        flex-direction: column;
    }
    
    .article-thumbnail {
        width: 100%;
        height: 200px;
    }
    
    .about-intro {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .social-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .article-meta-main {
        flex-direction: column;
        align-items: start;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .related-card {
        flex-direction: column;
    }
    
    .related-card img {
        width: 100%;
        height: 120px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .main {
        padding: var(--spacing-xl) 0;
    }
    
    .article-wrapper {
        padding: var(--spacing-md);
    }
    
    .contact-form {
        padding: var(--spacing-lg);
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }