/* Main color scheme */
:root {
  --bg: #f3f4f6;
  --content-bg: #ffffff;
  --text: #1f2937;
  --accent: #2563eb;
  --border: #d1d5db;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111827;
    --content-bg: #1f2937;
    --text: #f9fafb;
    --accent: #60a5fa;
    --border: #374151;
  }
}

/* Base styles */
html {
  font-family: var(--font);
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
}

body {
  max-width: 50rem;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header styles */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  position: relative;
}

header > a:first-of-type {
  font-weight: 800;
  text-decoration: none;
  color: var(--text);
  font-size: 1.2rem;
}

/* Navigation toggle for mobile */
#nav-toggle {
  display: none;
}

.menu-icon {
  display: none;
  cursor: pointer;
  font-size: 1.5rem;
}

/* Navigation styles */
nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

/* Responsive design for navigation */
@media (max-width: 640px) {
  .menu-icon {
    display: block;
  }

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--content-bg);
    border: 1px solid var(--border);
    padding: 1rem;
    z-index: 50;
  }

  #nav-toggle:checked ~ nav {
    display: block;
  }

  nav ul {
    flex-direction: column;
    gap: 1rem;
  }
}

/* Main content styles */
main {
  background: var(--content-bg);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-top: 1rem;
}

h1, h2 {
  color: var(--text);
  margin-top: 0;
}

/* Button styles */
button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
}

/* Code blocks */
pre {
  background: var(--bg);
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  overflow-x: auto;
}

/* Table styles */
table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
}