/* Clean & Minimalist CSS */
:root {
  --text-color: #2d3748;
  --text-light: #718096;
  --bg-color: #ffffff;
  --border-color: #e2e8f0;
  --accent-color: #4299e1;
  --accent-hover: #3182ce;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
}

/* Layout */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  border-bottom: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-bottom: 3rem;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

.site-description {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* Navigation */
nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

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

p {
  margin-bottom: 1rem;
}

/* Links */
a {
  color: var(--accent-color);
  transition: color 0.2s ease;
}

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

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: #f7fafc;
  padding: 0.2em 0.4em;
  border-radius: 3px;
}

pre {
  background: #f7fafc;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  margin: 1rem 0;
}

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

/* Syntax Highlighting */
.highlight {
  background: #f7fafc;
  border-radius: 6px;
  padding: 1rem;
  margin: 1rem 0;
  overflow-x: auto;
}

.highlight pre {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
}

/* Lists */
ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.3rem;
}

/* Cards */
.card {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  background: var(--bg-color);
}

/* Post/Project Meta */
.meta {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.meta-item {
  margin-right: 1rem;
}

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag {
  background: #f7fafc;
  color: var(--text-light);
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  text-decoration: none;
  border: 1px solid var(--border-color);
}

.tag:hover {
  background: #edf2f7;
}

/* Home Page */
.hero {
  text-align: center;
  padding: 3rem 0;
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Post List */
.post-list {
  list-style: none;
  margin-left: 0;
}

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

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

.post-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

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

.post-title a:hover {
  color: var(--accent-color);
}

.post-excerpt {
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.project-card {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.project-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.project-description {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* Post Navigation */
.post-nav {
  display: flex;
  justify-content: space-between;
  margin: 3rem 0;
  padding: 2rem 0;
  border-top: 1px solid var(--border-color);
}

.post-nav a {
  text-decoration: none;
  color: var(--text-light);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

.post-nav .next {
  text-align: right;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 4rem;
  text-align: center;
  color: var(--text-light);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }
  
  nav ul {
    flex-wrap: wrap;
    gap: 1rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.35rem; }
}

/* Dark mode preference */
@media (prefers-color-scheme: dark) {
  :root {
    --text-color: #f7fafc;
    --text-light: #a0aec0;
    --bg-color: #1a202c;
    --border-color: #2d3748;
    --accent-color: #63b3ed;
    --accent-hover: #90cdf4;
  }
  
  code {
    background: #2d3748;
  }
  
  pre,
  .highlight {
    background: #2d3748;
    border-color: #4a5568;
  }
  
  .card,
  .project-card {
    background: #2d3748;
    border-color: #4a5568;
  }
  
  .tag {
    background: #2d3748;
    border-color: #4a5568;
  }
  
  .tag:hover {
    background: #4a5568;
  }
}