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

:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    --color-link: #1a1a1a;
    --color-code-bg: #f5f5f5;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: "SF Mono", Monaco, "Courier New", monospace;
}

body {
    font-family: var(--font-sans);
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
}

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header */
.site-header {
    margin-bottom: 60px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}

.site-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    text-decoration: none;
}

.site-title:hover {
    text-decoration: underline;
}

.site-subtitle {
    color: var(--color-text-light);
    margin-top: 8px;
    font-size: 1rem;
}

.site-nav {
    margin-top: 16px;
}

.site-nav a {
    color: var(--color-text-light);
    text-decoration: none;
    margin-right: 20px;
    font-size: 0.9rem;
}

.site-nav a:hover {
    color: var(--color-text);
    text-decoration: underline;
}

/* Main content */
.site-main {
    min-height: 60vh;
}

/* Post list */
.post-list {
    list-style: none;
}

.post-item {
    margin-bottom: 50px;
}

.post-categories {
    margin-bottom: 8px;
}

.category {
    display: inline-block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-right: 12px;
    text-decoration: none;
}

.category:hover {
    color: var(--color-text);
    text-decoration: underline;
}

.post-title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.3;
    margin-bottom: 12px;
}

.post-title a {
    color: var(--color-text);
    text-decoration: none;
}

.post-title a:hover {
    text-decoration: underline;
}

.post-meta {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-top: 12px;
}

.post-meta span {
    margin-right: 16px;
}

.post-excerpt {
    margin-top: 16px;
    color: #333;
}

/* Single post */
.post {
    margin-bottom: 40px;
}

.post-header {
    margin-bottom: 40px;
}

.post-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 16px;
}

.post-content {
    font-size: 1.0625rem;
}

.post-content p {
    margin-bottom: 24px;
}

.post-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.post-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}

.post-content ul,
.post-content ol {
    margin-bottom: 24px;
    padding-left: 24px;
}

.post-content li {
    margin-bottom: 8px;
}

.post-content code {
    background: var(--color-code-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
    font-family: var(--font-mono);
}

.post-content pre {
    background: var(--color-code-bg);
    padding: 20px;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 24px;
}

.post-content pre code {
    background: none;
    padding: 0;
}

.post-content blockquote {
    border-left: 3px solid var(--color-border);
    padding-left: 20px;
    margin: 24px 0;
    color: var(--color-text-light);
    font-style: italic;
}

.post-content img {
    max-width: 100%;
    height: auto;
    margin: 24px 0;
    border-radius: 6px;
}

.post-content a {
    color: var(--color-link);
    text-decoration: underline;
}

.post-footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.back-link {
    color: var(--color-text-light);
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}

/* Footer */
.site-footer {
    margin-top: 80px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Tags page */
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--color-code-bg);
    border-radius: 20px;
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.9rem;
    transition: background 0.2s;
}

.tag-item:hover {
    background: var(--color-border);
}

.tag-name {
    font-weight: 500;
}

.tag-count {
    color: var(--color-text-light);
    font-size: 0.8rem;
}

.tag-description {
    color: var(--color-text-light);
    margin-bottom: 24px;
}

/* About page */
.about-content {
    font-size: 1.0625rem;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 20px 16px;
    }

    .site-title {
        font-size: 1.75rem;
    }

    .post-title {
        font-size: 1.25rem;
    }

    .post-content h2 {
        font-size: 1.25rem;
    }
}

/* Enhanced code block styling with Prism.js */
.post-content pre[class*="language-"] {
    background: #2d2d2d;
    border-radius: 8px;
    padding: 20px;
    margin: 24px 0;
    overflow-x: auto;
    font-size: 0.9em;
    line-height: 1.5;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.post-content code[class*="language-"],
.post-content pre[class*="language-"] {
    font-family: var(--font-mono);
}

/* Inline code styling */
.post-content :not(pre) > code {
    background: var(--color-code-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
    font-family: var(--font-mono);
}