/* base reset and shared typography */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Georgia', 'Times New Roman', serif;
  line-height: 1.55;
  color: #1a1a1a;
  background: #f7f7f3;
}
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid #d6d6cf;
  background: #fff;
}
.site-main { padding: 1.25rem; max-width: 980px; margin: 0 auto; }
.site-footer {
  padding: 1rem;
  text-align: center;
  opacity: 0.75;
  font-size: 0.9em;
  border-top: 1px solid #d6d6cf;
  margin-top: 2rem;
}

/* shared nav */
.brand { text-decoration: none; font-weight: 700; font-family: ui-monospace, 'Berkeley Mono', monospace; }
.nav-user { font-family: ui-monospace, monospace; opacity: 0.8; }
.logout-form { margin: 0; }
.logout-btn, .login-btn {
  background: #00aa44;
  color: #fff;
  border: 2px outset #00aa44;
  padding: 0.3rem 0.8rem;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.logout-btn:active, .login-btn:active { border-style: inset; }