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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #2c3e50;
    --light-bg: #ecf0f1;
    --border-color: #bdc3c7;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html, body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: #fff;
    line-height: 1.6;
}

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

a:hover {
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    font-weight: 600;
}

h1 {
    font-size: 2.5em;
    border-bottom: 3px solid var(--secondary-color);
    padding-bottom: 0.3em;
}

h2 {
    font-size: 1.8em;
}

h3 {
    font-size: 1.3em;
}

p {
    margin-bottom: 1em;
}

code {
    background-color: var(--light-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}

pre {
    background-color: var(--light-bg);
    padding: 1em;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1em;
}

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

/* Navbar */
.navbar {
    background-color: var(--primary-color);
    color: white;
    padding: 1em 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar a {
    color: white;
}

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

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.5em;
    font-weight: bold;
}

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

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-content {
    padding: 2em 0;
    min-height: calc(100vh - 200px);
}

/* Blog Feed */
.blog-feed {
    padding: 2em 0;
}

.post-summary {
    border-bottom: 1px solid var(--border-color);
    padding: 2em 0;
}

.post-summary:last-child {
    border-bottom: none;
}

.post-summary h2 {
    margin-top: 0;
}

.post-summary a {
    color: var(--secondary-color);
}

.post-meta {
    color: #7f8c8d;
    font-size: 0.9em;
}

.post-excerpt {
    margin: 1em 0;
    color: #555;
}

.read-more {
    display: inline-block;
    margin-top: 0.5em;
    padding: 0.5em 1em;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 3px;
    text-decoration: none;
}

.read-more:hover {
    background-color: #2980b9;
    text-decoration: none;
}

/* Single Post */
.post-full {
    padding: 2em 0;
}

.post-full h1 {
    margin-top: 0;
}

.post-content {
    margin: 2em 0;
    font-size: 1.05em;
    line-height: 1.8;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
    margin: 1em 0;
}

.post-tags {
    margin: 1em 0;
    padding: 1em;
    background-color: var(--light-bg);
    border-radius: 5px;
}

.tag {
    display: inline-block;
    padding: 0.3em 0.8em;
    margin: 0.3em;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.9em;
}

.tag.tag-book {
    background-color: #27ae60;
}

.tag.tag-game {
    background-color: #e67e22;
}

.tag.tag-language {
    background-color: #9b59b6;
}

/* Pages List */
.pages-list h1 {
    margin-bottom: 1em;
}

.page-list {
    list-style: none;
    margin: 2em 0;
}

.page-list li {
    border: 1px solid var(--border-color);
    padding: 1em;
    margin-bottom: 0.5em;
    border-radius: 5px;
    background-color: var(--light-bg);
}

.page-list a {
    font-weight: 500;
}

/* Reference Page */
.reference-page {
    padding: 2em 0;
}

.page-meta {
    color: #7f8c8d;
    margin: 0.5em 0;
}

.page-description {
    font-size: 1.1em;
    font-style: italic;
    margin: 1em 0;
    padding: 1em;
    background-color: var(--light-bg);
    border-left: 4px solid var(--secondary-color);
}

.page-blocks {
    margin: 2em 0;
}

.page-block {
    margin: 2em 0;
    padding: 1.5em;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: #fafafa;
}

.page-block h2 {
    margin-top: 0;
}

.block-empty {
    color: #95a5a6;
    font-style: italic;
}

.post-filter ul {
    list-style: none;
    padding: 0;
}

.post-filter li {
    padding: 0.5em 0;
    border-bottom: 1px solid var(--light-bg);
}

.post-filter li:last-child {
    border-bottom: none;
}

/* Back Link */
.back-link {
    display: inline-block;
    margin-top: 2em;
    padding: 0.5em 1em;
    background-color: var(--light-bg);
    border-radius: 3px;
}

.back-link:hover {
    background-color: #d5dbdb;
    text-decoration: none;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2em 0;
    margin-top: 3em;
}

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

    h2 {
        font-size: 1.5em;
    }

    .nav-links {
        gap: 1em;
        font-size: 0.9em;
    }

    .container {
        padding: 0 15px;
    }
}