/* Define color and font variables for easy customization */
:root {
  --primary-color: #556dab;
  --hover-color: #8556a0;
  --active-color: #3434c5;
  --text-color: #222;
  --bg-color: #fbfbfc;
  --nav-bg: #fff;
  --nav-border: #e0e0e0;
  --font-main: "Source Sans Pro", sans-serif;
  --font-code: "Source Code Pro", monospace;
}

/* Global resets and base styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 50px;
  font: normal 16px/1.5 var(--font-main);
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.6;
}

/* Remove default list styles */
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Headings */
h1, h2, h3, h4 {
  margin: 0 0 1rem;
  font-weight: 600;
  line-height: 1.2;
}

/* Typography for paragraphs and code */
p {
  margin-bottom: 1rem;
}

code {
  font-family: var(--font-code);
  font-size: 1em;
}

/* Navigation styling */
nav {
  position: fixed;
  top: 50px;
  left: 50px;
  width: 260px;
  background: var(--nav-bg);
  padding: 20px;
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

nav h1 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

nav ul li {
  margin: 0.5rem 0;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

/* Main content area styling */
main, #footnotes {
  margin-left: 340px; /* space for the fixed nav */
  max-width: 800px;
  padding: 20px;
}

aside {
  padding: 20px;
}

/* Headings in main */
main h1 {
  font-size: 2rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

main h2 {
  font-size: 1.75rem;
  padding: 0.4rem 0;
}

main h3,
main h4 {
  font-size: 1.5rem;
  padding: 0.35rem 0;
}

pre {
  background-color: #f5f5f5;
  padding: 1rem;
  overflow-x: auto;
  border-radius: 4px;
  font-size: 0.9rem;
}

p code {
  background: #f0f0f0;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

main aside {
  position: absolute;
  /* right: 50px; */
  left: 1200px;
  width: 280px;
  border-top: 1px solid var(--nav-border);
  font-size: 0.875rem;
  padding-top: 1rem;
  color: var(--text-color);
}

/*  */

/* Responsive adjustments */
@media (max-width: 900px) {
  nav {
    position: relative;
    width: 85%;
    margin-bottom: 2rem;
  }
  main {
    margin: 0;
  }
}

@media (max-width: 1480px) {
  main aside {
    position: absolute;
    bottom: 0;
  
    /* And if you want the div to be full-width: */
    left: 0;
    right: 0;
  }
}

hr {
  border: none;
  height: 1px;
  background-color: #4b4b53;
}