/* Global Styles */
:root {
  --primary: #667eea;
  --primary-dark: #5568d3;
  --secondary: #764ba2;
  --text: #1a1a1a;
  --text-light: #666;
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --border: #e5e7eb;
  --code-bg: #1e1e1e;
  --code-text: #d4d4d4;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans',
    Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
}

a {
  color: #0066cc;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #0052a3;
  text-decoration: underline;
}

code {
  font-family: 'Monaco', 'Courier New', monospace;
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* Responsive Images */
img {
  max-width: 100%;
  height: auto;
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}