/* Reset and base styles */
:root {
    --primary-color: #2563eb;
    --text-color: #1f2937;
    --background-color: #ffffff;
    --accent-color: #3b82f6;
    --container-width: 1200px;
}

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

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

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation */
nav {
    background-color: var(--background-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    text-align: center;
    background: linear-gradient(to bottom, #f8fafc, #ffffff);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.hero h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    color: #4b5563;
    max-width: 600px;
    margin: 0 auto;
}

/* Featured Work Section */
.featured-work {
    padding: 4rem 0;
}

.featured-work h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--text-color);
}

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

/* Footer */
footer {
    background-color: #f8fafc;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    text-align: center;
}

.social-links {
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Print styles */
@media print {
    nav {
        position: static;
    }
    
    .hero {
        padding: 2rem 0;
    }
}

/* About Section */
.about-section {
    padding: 8rem 0 4rem;
}

.about-section h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

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

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-text p {
    margin-bottom: 2rem;
}

.about-text h2 {
    color: var(--text-color);
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
}

.experience-list {
    list-style: none;
    margin-bottom: 2rem;
}

.experience-list li {
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 3px solid var(--primary-color);
}

.experience-list h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.skills-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    list-style: none;
    margin-top: 1rem;
}

.skills-list li {
    background-color: #f8fafc;
    padding: 1rem;
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 500;
    transition: transform 0.2s ease;
}

.skills-list li:hover {
    transform: translateY(-2px);
    background-color: #f1f5f9;
}

/* Contact Section */
.contact-section {
    padding: 8rem 0 4rem;
}

.contact-section h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    font-size: 1.1rem;
    line-height: 1.8;
}

.contact-methods {
    margin-top: 2rem;
}

.contact-method {
    margin-bottom: 1.5rem;
}

.contact-method h3 {
    color: var(--text-color);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

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

.contact-method a:hover {
    text-decoration: underline;
}

/* Contact Form */
.contact-form {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.375rem;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.submit-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.submit-btn:hover {
    background-color: var(--accent-color);
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Blog Section */
.blog-section {
    padding: 8rem 0 4rem;
}

.blog-section h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
    text-align: center;
}

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

.blog-card {
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: #64748b;
}

.blog-category {
    background-color: #f1f5f9;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-weight: 500;
}

.blog-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.blog-card h2 a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.blog-card p {
    color: #4b5563;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: color 0.2s ease;
}

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

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-card {
        max-width: 500px;
        margin: 0 auto;
    }
}

/* Blog Post */
.blog-post {
    padding: 8rem 0 4rem;
}

.blog-post-header {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
}

.blog-post-header h1 {
    font-size: 3rem;
    color: var(--text-color);
    margin: 1rem 0;
    line-height: 1.2;
}

.blog-excerpt {
    font-size: 1.25rem;
    color: #4b5563;
    max-width: 600px;
    margin: 1.5rem auto;
    line-height: 1.6;
}

.blog-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-color);
}

.blog-content h2 {
    font-size: 2rem;
    margin: 3rem 0 1.5rem;
    color: var(--text-color);
}

.blog-content h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--text-color);
}

.blog-content p {
    margin-bottom: 1.5rem;
}

.blog-content ul {
    margin: 1.5rem 0;
    padding-left: 1.5rem;
}

.blog-content li {
    margin-bottom: 0.5rem;
}

.blog-post-footer {
    max-width: 800px;
    margin: 4rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid #e2e8f0;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tag {
    background-color: #f1f5f9;
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.blog-share {
    text-align: center;
}

.blog-share h4 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

@media (max-width: 768px) {
    .blog-post-header h1 {
        font-size: 2rem;
    }
    
    .blog-excerpt {
        font-size: 1.125rem;
    }
    
    .blog-content {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .blog-content h2 {
        font-size: 1.5rem;
    }
    
    .blog-content h3 {
        font-size: 1.25rem;
    }
}

/* Code blocks and syntax highlighting */
pre {
    background-color: #f8fafc;
    padding: 1.5rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}

code {
    font-family: 'Fira Code', monospace;
    font-size: 0.875em;
}

/* Error Page */
.error-section {
    padding: 8rem 0 4rem;
    text-align: center;
}

.error-content {
    max-width: 600px;
    margin: 0 auto;
}

.error-content h1 {
    font-size: 6rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 1rem;
}

.error-content h2 {
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.error-content p {
    font-size: 1.125rem;
    color: #4b5563;
    margin-bottom: 2rem;
}

.error-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.primary-button,
.secondary-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

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

.primary-button:hover {
    background-color: var(--accent-color);
}

.secondary-button {
    background-color: #f1f5f9;
    color: var(--text-color);
}

.secondary-button:hover {
    background-color: #e2e8f0;
}

@media (max-width: 768px) {
    .error-content h1 {
        font-size: 4rem;
    }
    
    .error-content h2 {
        font-size: 1.5rem;
    }
    
    .error-content p {
        font-size: 1rem;
    }
    
    .error-actions {
        flex-direction: column;
    }
}