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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

/* Header */
header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

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

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

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

/* Main Content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--bg-primary);
    margin: -3rem -2rem 3rem -2rem;
    border-bottom: 1px solid var(--border-color);
}

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

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Blog Posts */
.blog-posts {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

.blog-post-card {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
}

.blog-post-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.blog-post-card h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

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

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

.post-meta {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.post-excerpt {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

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

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

.read-more::after {
    content: ' →';
}

/* Blog Post Content */
.blog-post {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 3rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    max-width: 800px;
    margin: 0 auto;
}

.post-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.post-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.post-content {
    font-size: 1.125rem;
    line-height: 1.8;
}

.post-content h2 {
    font-size: 1.875rem;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

.post-content h3 {
    font-size: 1.5rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-primary);
}

.post-content p {
    margin-bottom: 1.25rem;
}

.post-content ul,
.post-content ol {
    margin-bottom: 1.25rem;
    padding-left: 2rem;
}

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

.post-content code {
    background-color: var(--bg-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
    font-family: 'Courier New', monospace;
}

.post-content pre {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin-bottom: 1.25rem;
}

.post-content pre code {
    background-color: transparent;
    padding: 0;
}

.back-link {
    display: inline-block;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

.back-link::before {
    content: '← ';
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .blog-post {
        padding: 2rem 1.5rem;
    }

    .post-header h1 {
        font-size: 2rem;
    }

    .post-content {
        font-size: 1rem;
    }

    nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }
}