/* Base styles */
:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --text-color: #333;
  --background-color: #fff;
  --border-color: #ddd;
  --code-background: #f5f5f5;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

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

header nav a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: bold;
  font-size: 1.2rem;
}

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

/* Main content */
main {
  min-height: calc(100vh - 200px);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--primary-color);
  margin: 1.5rem 0 1rem;
}

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

p {
  margin-bottom: 1rem;
}

a {
  color: var(--secondary-color);
}

/* Section header with view all link */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.section-header h1 {
  margin: 1.5rem 0 1rem;
}

.view-all {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--secondary-color);
  text-decoration: none;
}

.view-all:hover {
  text-decoration: underline;
}

/* Blog post list */
.post-list {
  list-style: none;
}

.post-list li {
  margin-bottom: 1.5rem;
}

.post-list li:last-child {
  margin-bottom: 0;
}

.post-card {
  display: block;
  text-decoration: none;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.post-card:hover {
  border-color: var(--secondary-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.post-card h2 {
  margin: 0 0 0.5rem;
  color: var(--primary-color);
}

.post-card:hover h2 {
  color: var(--secondary-color);
}

.post-card time {
  color: #666;
  font-size: 0.9rem;
}

.post-card p {
  color: var(--text-color);
  margin-top: 0.5rem;
  margin-bottom: 0;
}

/* Blog post */
.blog-post {
  margin-bottom: 2rem;
}

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

.post-header h1 {
  margin-bottom: 0.5rem;
}

.post-header time {
  color: #666;
  font-size: 0.9rem;
}

.post-content {
  margin-bottom: 2rem;
}

.post-content img {
  max-width: 100%;
  height: auto;
}

.post-content code {
  background-color: var(--code-background);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

.post-content pre {
  background-color: var(--code-background);
  padding: 1rem;
  border-radius: 5px;
  overflow-x: auto;
  margin: 1rem 0;
}

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

/* Task lists (checkboxes) */
.post-content ul.contains-task-list {
  list-style: none;
  padding-left: 0;
}

.post-content .task-list-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.post-content .task-list-item-checkbox {
  margin-top: 0.35rem;
  width: 1rem;
  height: 1rem;
  accent-color: var(--secondary-color);
}

.post-content .task-list-item > label {
  flex: 1;
}

/* Nested task lists */
.post-content .task-list-item ul.contains-task-list {
  margin-top: 0.25rem;
}

/* Lists in post content */
.post-content ul,
.post-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.25rem;
}

.post-content ul ul,
.post-content ul ol,
.post-content ol ul,
.post-content ol ol {
  margin-top: 0.25rem;
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
}

/* Expandable sections */
.expandable {
  border: 1px solid var(--border-color);
  border-radius: 5px;
  margin: 1rem 0;
}

.expandable summary {
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-weight: bold;
  background-color: var(--code-background);
  border-radius: 5px 5px 0 0;
}

.expandable[open] summary {
  border-bottom: 1px solid var(--border-color);
}

.expandable > *:not(summary) {
  padding: 0 1rem;
}

.expandable > p:last-child {
  padding-bottom: 1rem;
}

/* Tags */
.post-tags {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.post-tags h2 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.tag-list li {
  display: inline;
}

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

.tag-list a:hover {
  text-decoration: underline;
}

/* Footnotes */
.footnotes {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 2px solid var(--border-color);
  font-size: 0.9rem;
}

.footnotes h2 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.footnotes ol {
  padding-left: 1.5rem;
}

.footnotes li {
  margin-bottom: 0.5rem;
}

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

.footnote-backref {
  margin-left: 0.5rem;
  text-decoration: none;
}

/* Draft Warning Banner */
.draft-warning-banner {
  background-color: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 5px;
  padding: 1rem;
  margin-bottom: 1.5rem;
  color: #856404;
  font-weight: 500;
  text-align: center;
}

/* Footer */
footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: #666;
  font-size: 0.9rem;
}