/* Base Styles - Works without JavaScript */

:root {
  --color-text: #2d2d2d;
  --color-text-light: #6b6b6b;
  --color-bg: #ffffff;
  --color-bg-alt: #f9f7fb;
  --color-primary: #8b5cf6;
  --color-primary-dark: #7c3aed;
  --color-accent: #d946ef;
  --color-border: #e9d5ff;
  --spacing-unit: 1rem;
  --max-width: 70ch;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
}

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

html {
  font-size: 16px;
  line-height: 1.6;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  padding: 0;
  margin: 0;
}

/* Navigation */
nav {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #faf5ff 100%);
  border-bottom: 2px solid var(--color-border);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.nav-brand {
  font-weight: bold;
  font-size: 1.3rem;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 0.5px;
}

.nav-brand:hover {
  color: var(--color-primary-dark);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
}

.nav-links a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Main Content */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem var(--spacing-unit);
  min-height: calc(100vh - 200px);
}

article {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 1.5rem 0 0.75rem;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin: 1rem 0;
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Lists */
ul, ol {
  margin: 1rem 0;
  padding-left: 2rem;
}

li {
  margin: 0.5rem 0;
}

/* Code */
code {
  font-family: var(--font-mono);
  background: var(--color-bg-alt);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

pre {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 1rem;
  border-radius: 5px;
  overflow-x: auto;
  margin: 1.5rem 0;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Blockquotes */
blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg-alt);
  padding: 1rem 1rem 1rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--color-text-light);
  font-style: italic;
  border-radius: 0 8px 8px 0;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

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

th {
  background: var(--color-bg-alt);
  font-weight: bold;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem 0;
}

/* Footer */
footer {
  background: linear-gradient(135deg, #faf5ff 0%, var(--color-bg-alt) 100%);
  border-top: 2px solid var(--color-border);
  padding: 2rem var(--spacing-unit);
  text-align: center;
  margin-top: 4rem;
  color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .nav-container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  main {
    padding: 1rem;
  }
}

/* Print styles */
@media print {
  nav, footer {
    display: none;
  }
  
  main {
    max-width: 100%;
    padding: 0;
  }
  
  a {
    color: inherit;
    text-decoration: underline;
  }
}