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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  background-color: #f8f9fa; color: #333;
}

a { color: #4361ee; }

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem; border: none; border-radius: 8px;
  font-size: 1rem; font-weight: 600; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s; text-decoration: none;
  display: inline-block;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.btn:active { transform: translateY(0); }
.btn-primary { background-color: #4361ee; color: #fff; }
.btn-secondary { background-color: transparent; border: 2px solid currentColor; opacity: 0.7; }
.btn-extension { background-color: #ff6b35; color: #fff; }

/* Page content layout */
.page {
  max-width: 680px; margin: 0 auto;
  padding: 6rem 1.5rem 3rem;
}
.page h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.page h2 { margin-top: 2rem; margin-bottom: 0.5rem; font-size: 1.3rem; }
.page p, .page ul, .page ol { margin-bottom: 1rem; }
.page ul, .page ol { padding-left: 1.5rem; }
.page .updated { opacity: 0.5; margin-bottom: 2rem; font-size: 0.9rem; }

/* Code blocks */
.page pre {
  background: rgba(67, 97, 238, 0.08); border-radius: 8px;
  padding: 1rem 1.25rem; overflow-x: auto; margin-bottom: 1rem;
}
.page pre code {
  font-family: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.85rem;
}

/* Footer */
.site-footer {
  text-align: center; padding: 2rem 1.5rem; margin-top: 3rem;
  font-size: 0.85rem; opacity: 0.5;
  border-top: 1px solid #ddd;
}
.site-footer a { color: inherit; }
.site-footer .coffee-link { margin-left: 0.25rem; }

/* Fade-in animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}