:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-bg: #f5f6fa;
    --card-bg: #ffffff;
    --border-radius: 8px;
    --spacing: 1rem;
    --transition-speed: 0.3s;
}

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

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
    font-size: clamp(1rem, 1vw + 0.75rem, 1.125rem);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.back-link {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid white;
    border-radius: 5px;
    transition: all var(--transition-speed) ease;
}

.back-link:hover,
.back-link:focus-visible {
    background-color: white;
    color: var(--primary-color);
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

.article {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.article h1 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.article h2 {
    color: var(--primary-color);
    margin: 2rem 0 1rem;
}

.article h3 {
    color: var(--secondary-color);
    margin: 1.5rem 0 1rem;
}

.article h4 {
    color: var(--accent-color);
    margin: 1.2rem 0 0.8rem;
}

.article p {
    margin-bottom: 1rem;
}

.article ul {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.article li {
    margin-bottom: 0.5rem;
}

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

.article em {
    color: #666;
}

.article a {
    color: var(--secondary-color);
    text-decoration: none;
}

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

/* Comparison Table Styles */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border: 1px solid #e1e1e1;
}

.comparison-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

.comparison-table tr:nth-child(even) {
    background-color: var(--light-bg);
}

.comparison-table tr:hover {
    background-color: #f8f9fa;
}

@media (max-width: 768px) {
    .comparison-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    color: #666;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed) ease;
    padding: 0.5rem;
    border-radius: var(--border-radius);
}

nav a:hover,
nav a:focus-visible {
    color: var(--secondary-color);
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 var(--spacing);
}

h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.blog-categories {
    margin-bottom: 3rem;
}

.blog-categories h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color);
}

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

.blog-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-speed) ease;
    will-change: transform;
}

.blog-card:hover,
.blog-card:focus-within {
    transform: translateY(-5px);
}

.blog-card h3 {
    margin-bottom: 1rem;
}

.blog-card h3 a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.blog-card h3 a:hover {
    color: var(--secondary-color);
}

.post-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.category {
    background-color: var(--secondary-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

.blog-card p {
    color: #666;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .container {
        padding: 1rem;
    }

    .article {
        padding: 1.5rem;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .article {
        box-shadow: none;
        padding: 0;
    }

    nav, 
    .back-link,
    footer {
        display: none;
    }
}

/* Code Block Styles */
.code-block {
    background-color: #f8f9fa;
    border: 1px solid #e1e1e1;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #333;
}

/* Architecture Diagram Styles */
.architecture-diagram {
    margin: 2rem 0;
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    overflow-x: auto;
}

.architecture-diagram pre {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #333;
    margin: 0;
    white-space: pre;
}