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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    background-color: #fff;
    background-image:
        linear-gradient(rgba(130, 180, 220, 0.15) 1px, transparent 1px),
        linear-gradient(90deg, rgba(130, 180, 220, 0.15) 1px, transparent 1px);
    background-size: 20px 20px;
}

header {
    margin-bottom: 2rem;
}

header h1 {
    margin-bottom: 0.5rem;
}

header h1 a {
    color: #333;
    text-decoration: none;
}

header h1 a:hover {
    color: #0066cc;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
}

nav a {
    color: #666;
    text-decoration: none;
}

nav a:hover,
nav .active a {
    color: #0066cc;
}

main {
    min-height: 60vh;
}

main h1 {
    font-size: 1.75rem;
    line-height: 1.3;
    margin-bottom: 1rem;
}

main h2, main h3, main h4 {
    display: block;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

main h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

main h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

main h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

main p {
    margin-bottom: 1rem;
}

main a {
    color: #0066cc;
}

main ul, main ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
    list-style-position: outside;
}

main ul {
    list-style-type: disc;
}

main ol {
    list-style-type: decimal;
}

main li {
    margin-bottom: 0.5rem;
    display: list-item;
}

main code {
    background: #f5f5f5;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9em;
}

main pre {
    background: #f5f5f5;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

main pre code {
    background: none;
    padding: 0;
}

main img {
    max-width: 100%;
    height: auto;
}

main blockquote {
    border-left: 4px solid #ddd;
    padding-left: 1rem;
    margin: 1rem 0;
    color: #666;
}

#comments {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

#comments h2 {
    margin-bottom: 1rem;
}

footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    color: #999;
    font-size: 0.875rem;
}

footer a {
    color: #666;
}

/* Blog listing */
.blog-posts .post {
    margin-bottom: 1.5rem;
}

.blog-posts .post h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 0 0.25rem 0;
}

.blog-posts .post h2 a {
    color: #1a1a1a;
    text-decoration: none;
}

.blog-posts .post h2 a:hover {
    color: #0066cc;
}

.blog-posts .post .date {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 0.25rem;
}

.blog-posts .post .excerpt {
    font-size: 0.95rem;
    color: #555;
    margin: 0;
}

/* Tags */
.tags {
    margin: 0.25rem 0 1rem 0;
}

.tag {
    display: inline-block;
    background: #f0f0f0;
    color: #555;
    border-radius: 3px;
    padding: 0.1rem 0.5rem;
    margin: 0 0.25rem 0.25rem 0;
    font-size: 0.85rem;
    text-decoration: none;
}

a.tag:hover {
    background: #0066cc;
    color: #fff;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: baseline;
}

.tag-cloud .tag-sm { font-size: 0.8rem; }
.tag-cloud .tag-md { font-size: 0.95rem; }
.tag-cloud .tag-lg { font-size: 1.15rem; }
.tag-cloud .tag-xl { font-size: 1.4rem; }

.tag-page-nav {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}