/* Base layout */
html {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

body {
  flex: 1;
  display: flex;
  flex-direction: column;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #24292e;
}

/* Header */
header {
  padding: 15px 20px;
  border-bottom: 1px solid #eee;
  background-color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header .logo {
  display: inline-block;
}

header img {
  height: 40px;
  width: auto;
  display: block;
}

header nav {
  display: flex;
  gap: 24px;
}

header nav a {
  color: #24292e;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
}

header nav a:hover {
  color: #0366d6;
}

/* Main content */
main {
  flex: 1;
  padding: 20px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
  border-top: 1px solid #eee;
  color: #666;
  font-size: 14px;
}

footer a {
  color: #0366d6;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: 24px;
  margin-bottom: 16px;
  font-weight: 600;
  line-height: 1.25;
}

h1 {
  font-size: 2em;
  border-bottom: 1px solid #eaecef;
  padding-bottom: 0.3em;
}

h2 {
  font-size: 1.5em;
  border-bottom: 1px solid #eaecef;
  padding-bottom: 0.3em;
}

h3 {
  font-size: 1.25em;
}

p {
  margin-top: 0;
  margin-bottom: 16px;
}

/* Links */
a {
  color: #0366d6;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Lists */
ul, ol {
  padding-left: 2em;
  margin-top: 0;
  margin-bottom: 16px;
}

li {
  margin-bottom: 4px;
}

li + li {
  margin-top: 4px;
}

/* Code */
code {
  padding: 0.2em 0.4em;
  margin: 0;
  font-size: 85%;
  background-color: rgba(27, 31, 35, 0.05);
  border-radius: 6px;
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

pre {
  padding: 16px;
  overflow: auto;
  font-size: 85%;
  line-height: 1.45;
  background-color: #f6f8fa;
  border-radius: 6px;
  margin-top: 0;
  margin-bottom: 16px;
}

pre code {
  padding: 0;
  margin: 0;
  font-size: 100%;
  background-color: transparent;
  border-radius: 0;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  box-sizing: border-box;
}

/* Blockquotes */
blockquote {
  padding: 0 1em;
  color: #6a737d;
  border-left: 0.25em solid #dfe2e5;
  margin: 0 0 16px 0;
}

/* Horizontal rules */
hr {
  height: 0.25em;
  padding: 0;
  margin: 24px 0;
  background-color: #e1e4e8;
  border: 0;
}

/* Tables */
table {
  border-spacing: 0;
  border-collapse: collapse;
  margin-top: 0;
  margin-bottom: 16px;
  width: auto;
  overflow: auto;
}

th, td {
  padding: 6px 13px;
  border: 1px solid #dfe2e5;
}

th {
  font-weight: 600;
  background-color: #f6f8fa;
}

tr:nth-child(2n) {
  background-color: #f6f8fa;
}

/* Iframes (for YouTube embeds) */
iframe {
  max-width: 100%;
  margin-bottom: 16px;
}