:root {
  --bg: #121212;
  --text: #ffffff;
  --secondary-bg: #1e1e1e;
  --border: #333333;
  --accent: #bb86fc;
  --link: #bb86fc;
  --button-bg: #333333;
  --button-hover: #444444;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --text: #000000;
    --secondary-bg: #f5f5f5;
    --border: #dddddd;
    --accent: #6200ee;
    --link: #6200ee;
    --button-bg: #f0f0f0;
    --button-hover: #e0e0e0;
  }
}

* {
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

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

nav {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
}

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

nav a:hover {
  color: var(--accent);
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

section {
  margin-bottom: 3rem;
}

h1, h2, h3 {
  color: var(--text);
}

.project, .post {
  background-color: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.project:hover, .post:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.project-header, .post-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.project-title, .post-title {
  margin: 0 0 0.5rem;
  color: var(--text);
}

.category {
  background-color: var(--button-bg);
  color: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  text-transform: uppercase;
}

.date {
  color: #888;
  font-size: 0.875rem;
}

.excerpt {
  padding: 0 1.5rem 1.5rem;
  margin: 0;
}

.read-more {
  display: inline-block;
  margin: 1rem 1.5rem 1.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--button-bg);
  color: var(--link);
  text-decoration: none;
  border-radius: 4px;
  transition: background-color 0.2s;
}

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

.content {
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.search-container {
  margin-bottom: 2rem;
}

#searchInput {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--secondary-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-size: 1rem;
}

#searchInput::placeholder {
  color: #888;
}

.category-filter {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.category-btn {
  padding: 0.5rem 1rem;
  background-color: var(--button-bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.category-btn:hover,
.category-btn.active {
  background-color: var(--accent);
  color: #000;
}

.no-posts {
  text-align: center;
  color: #888;
  padding: 2rem;
}

footer {
  background-color: var(--secondary-bg);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1rem;
  margin-top: 3rem;
}

@media (max-width: 768px) {
  nav ul {
    gap: 1rem;
    padding: 0 0.5rem;
  }

  nav a {
    font-size: 0.9rem;
  }

  main {
    padding: 1rem;
  }

  .project-header, .post-header,
  .content {
    padding: 1rem;
  }

  .category-filter {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }

  .project, .post {
    margin-bottom: 1rem;
  }
}