/* ========================================
   Minimalist Blog Theme for Jekyll
   ======================================== */

/* CSS Variables */
:root {
  --color-text: #1a1a1a;
  --color-text-light: #666;
  --color-background: #ffffff;
  --color-background-alt: #f9f9f9;
  --color-border: #e0e0e0;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;
  --max-width: 720px;
  --spacing-unit: 1.5rem;
  --border-radius: 4px;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
h5, h6 { font-size: 1rem; }

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;
}

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

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  gap: 1.5rem;
}

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

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

/* Main Content */
.site-content {
  flex: 1;
  padding-bottom: 3rem;
}

/* Post List (Homepage) */
.post-list {
  list-style: none;
}

.post-list-item {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

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

.post-list-title {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.post-list-title a {
  color: var(--color-text);
}

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

.post-list-meta {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.post-list-meta time {
  margin-right: 1rem;
}

.post-list-excerpt {
  color: var(--color-text-light);
  line-height: 1.6;
}

.post-list-tags {
  margin-top: 0.75rem;
}

/* Post Detail */
.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--color-border);
}

.post-title {
  font-size: 2.25rem;
  margin-top: 0;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.post-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.post-taxonomy {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.post-categories,
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.category,
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.85rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: all 0.2s ease;
}

.category {
  background-color: var(--color-accent);
  color: white;
}

.category:hover {
  background-color: var(--color-accent-hover);
  text-decoration: none;
  color: white;
}

.tag {
  background-color: var(--color-background-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.tag:hover {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  text-decoration: none;
}

/* Post Content */
.post-content,
.page-content {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-top: 2rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.page-content h1,
.page-content h2,
.page-content h3 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.post-content img,
.page-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 2rem auto;
  border-radius: var(--border-radius);
}

.post-content blockquote,
.page-content blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--color-accent);
  background-color: var(--color-background-alt);
  font-style: italic;
}

.post-content code,
.page-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.2em 0.4em;
  background-color: var(--color-background-alt);
  border-radius: var(--border-radius);
}

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

.post-content pre code,
.page-content pre code {
  background-color: transparent;
  padding: 0;
  font-size: 0.9rem;
}

.post-content ul,
.post-content ol,
.page-content ul,
.page-content ol {
  margin-left: 2rem;
  margin-bottom: 1rem;
}

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

.post-content table,
.page-content table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
}

.post-content th,
.post-content td,
.page-content th,
.page-content td {
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.post-content th,
.page-content th {
  background-color: var(--color-background-alt);
  font-weight: 600;
}

/* Post Navigation */
.post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.prev-post,
.next-post {
  display: flex;
  flex-direction: column;
}

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

.nav-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

/* Comments */
.comments-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.comments-section h2 {
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.comments-info {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.pagination a,
.pagination span {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: all 0.2s ease;
}

.pagination a:hover {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  text-decoration: none;
}

.pagination .current {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

/* Archive & Tags Pages */
.archive-list,
.tag-list {
  list-style: none;
}

.archive-year {
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.archive-item {
  margin-bottom: 1rem;
  padding-left: 1rem;
}

.archive-date {
  display: inline-block;
  min-width: 100px;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0;
}

.tag-cloud-item {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--color-background-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.2s ease;
}

.tag-cloud-item:hover {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  text-decoration: none;
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-background-alt);
}

.footer-content {
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.footer-content p {
  margin-bottom: 0.5rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 1rem 0;
}

.social-links a {
  color: var(--color-text-light);
}

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

.powered-by {
  margin-top: 1rem;
  font-size: 0.85rem;
}

/* Page */
.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--color-border);
}

.page-title {
  font-size: 2.25rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
}

/* Responsive Design */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .site-nav {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .post-title {
    font-size: 1.75rem;
  }
  
  .post-navigation {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .next-post {
    text-align: left;
  }
  
  .post-meta {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* Syntax Highlighting (Rouge) */
.highlight {
  background-color: var(--color-background-alt);
  border-radius: var(--border-radius);
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid var(--color-border);
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }