:root {
  --bg: #0d1117;
  --bg-surface: #161b22;
  --bg-elevated: #1c2128;
  --border: #30363d;
  --border-muted: #21262d;
  --text: #e6edf3;
  --text-secondary: #b1bac4;
  --text-muted: #7d8590;
  --accent: #58a6ff;
  --accent-emphasis: #1f6feb;
  --accent-subtle: rgba(56, 139, 253, 0.1);
  --success: #3fb950;
  --success-subtle: rgba(46, 160, 67, 0.15);
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --transition: 0.2s ease;
  --radius: 6px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text-secondary);
  background-color: var(--bg);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

p {
  line-height: 1.7;
  color: var(--text-secondary);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

img {
  max-width: 100%;
  display: block;
}

::selection {
  background: var(--accent-subtle);
  color: var(--accent);
}