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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
    "Ubuntu", "Cantarell", sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
}

.container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
  width: 250px;
  background-color: #2c3e50;
  color: #ecf0f1;
  padding: 2rem 0;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

.sidebar ul {
  list-style: none;
  padding: 0;
}

.sidebar li {
  margin: 0;
}

.sidebar a {
  display: block;
  padding: 0.75rem 1.5rem;
  color: #ecf0f1;
  text-decoration: none;
  transition: background-color 0.2s;
  border-left: 3px solid transparent;
}

.sidebar a:hover {
  background-color: #34495e;
  border-left-color: #3498db;
}

.sidebar a:active,
.sidebar a:focus {
  background-color: #34495e;
  border-left-color: #3498db;
}

/* Main Content */
.content {
  margin-left: 250px;
  flex: 1;
  padding: 2rem 3rem;
  max-width: 900px;
  background-color: #ffffff;
  box-shadow: -2px 0 5px rgba(0, 0, 0, 0.05);
}

/* Markdown Styling */
.content h1 {
  font-size: 2.5rem;
  margin-top: 0;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid #3498db;
  color: #2c3e50;
}

.content h2 {
  font-size: 2rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #ecf0f1;
  color: #34495e;
}

.content h3 {
  font-size: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: #34495e;
}

.content h4 {
  font-size: 1.25rem;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  color: #555;
}

.content p {
  margin-bottom: 1rem;
  text-align: justify;
}

.content strong {
  font-weight: 600;
  color: #2c3e50;
}

.content em {
  font-style: italic;
  color: #555;
}

.content code {
  background-color: #f4f4f4;
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-family: "Monaco", "Menlo", "Ubuntu Mono", "Consolas", monospace;
  font-size: 0.9em;
  color: #e74c3c;
}

.content pre {
  background-color: #2c3e50;
  color: #ecf0f1;
  padding: 1rem;
  border-radius: 5px;
  overflow-x: auto;
  margin: 1rem 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.content pre code {
  background-color: transparent;
  padding: 0;
  color: #ecf0f1;
  font-size: 0.9em;
}

.content ul,
.content ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

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

.content blockquote {
  border-left: 4px solid #3498db;
  padding-left: 1rem;
  margin-left: 0;
  margin-bottom: 1rem;
  color: #555;
  font-style: italic;
}

.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.content table th,
.content table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #ecf0f1;
}

.content table th {
  background-color: #3498db;
  color: white;
  font-weight: 600;
}

.content table tr:hover {
  background-color: #f8f9fa;
}

.content hr {
  border: none;
  border-top: 2px solid #ecf0f1;
  margin: 2rem 0;
}

.content a {
  color: #3498db;
  text-decoration: none;
}

.content a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 200px;
  }

  .content {
    margin-left: 200px;
    padding: 1.5rem;
  }
}