/* Reset and base styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #0d1117;
  --color-bg-secondary: #161b22;
  --color-text: #c9d1d9;
  --color-text-muted: #8b949e;
  --color-accent: #58a6ff;
  --color-accent-hover: #79b8ff;
  --color-border: #30363d;
  --color-code-bg: #1f2428;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --max-width: 800px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 1rem;
  color: #f0f6fc;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; margin-top: 2rem; }
h3 { font-size: 1.25rem; margin-top: 1.5rem; }

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* Navigation */
.navbar {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.nav-brand {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f0f6fc;
}

.nav-brand:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* Language switcher */
.lang-switcher {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-left: 0.5rem;
  padding-left: 1rem;
  border-left: 1px solid var(--color-border);
}

.lang-current {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.85rem;
}

.lang-link {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  transition: color 0.2s ease;
}

.lang-link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* Main content */
.main-content {
  flex: 1;
  padding: 3rem 0;
}

/* Hero section */
.hero {
  text-align: center;
  padding: 2rem 0 3rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.intro-code {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem auto;
  max-width: 500px;
  text-align: left;
}

.intro-code pre {
  margin: 0;
}

.intro-code code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text);
  line-height: 1.5;
}

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

/* Current work section */
.current-work {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
}

.current-work h2 {
  margin-bottom: 0.5rem;
}

.current-work > .container > p {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.activities {
  display: grid;
  gap: 1.5rem;
}

.activity {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.activity .icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.activity p {
  margin: 0;
  color: var(--color-text);
}

/* Recent posts section */
.recent-posts {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
}

.post-list {
  list-style: none;
  margin: 1.5rem 0;
}

.post-list li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.post-list article h2,
.post-list article h3 {
  margin: 0 0 0.5rem;
}

.post-list article h3 a {
  color: #f0f6fc;
}

.post-list article h3 a:hover {
  color: var(--color-accent);
}

.post-list time {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.post-list p {
  margin: 0.75rem 0 0;
  color: var(--color-text-muted);
}

.view-all,
.read-more {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 500;
}

/* Blog page */
.blog-page {
  padding: 1rem 0;
}

.blog-page h1 {
  margin-bottom: 2rem;
}

.blog-page .post-list article h2 {
  margin-top: 0;
}

.blog-page .post-list article h2 a {
  color: #f0f6fc;
}

.categories {
  display: inline-flex;
  gap: 0.5rem;
  margin-left: 1rem;
}

.category {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-muted);
}

/* Post page */
.post {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.post-title {
  margin-bottom: 0.5rem;
}

.post-meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.post-content {
  font-size: 1.05rem;
}

.post-content h2 {
  margin-top: 2.5rem;
}

.post-content ul,
.post-content ol {
  margin: 1rem 0 1rem 2rem;
}

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

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-bg-secondary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

.post-content pre {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

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

.post-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.post-content strong {
  color: #f0f6fc;
}

.post-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

/* Page layout */
.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-header {
  margin-bottom: 2rem;
}

.page-content {
  font-size: 1.05rem;
}

.page-content ul {
  margin: 1rem 0 1rem 2rem;
}

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

/* Footer */
.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  text-align: center;
}

.footer p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .intro-code code {
    font-size: 0.75rem;
  }

  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .lang-switcher {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
}