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

body {
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #111;
  color: #fff;
  padding: 2rem;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img#rux-logo {
  width: 320px;
  height: auto;
  margin-bottom: 1rem;
  cursor: pointer;
}

.brand {
  color: #ff3c3c;
}

#toggle-mode {
  padding: 0.6rem 1.2rem;
  border: 2px solid #fff;
  background: none;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

#toggle-mode:hover {
  background: #fff;
  color: #000;
}

.intro, .tiers {
  margin-top: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.intro ul {
  list-style: none;
  margin-top: 1rem;
}

.intro li {
  margin-bottom: 0.5rem;
}

.tiers .tier {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid #444;
  border-radius: 8px;
}

footer {
  margin-top: 3rem;
  font-size: 0.9rem;
  color: #999;
}

/* Light mode overrides */
html:not(.dark) body {
  background-color: #fff;
  color: #000;
}

html:not(.dark) #toggle-mode {
  border-color: #000;
  color: #000;
}

html:not(.dark) #toggle-mode:hover {
  background: #000;
  color: #fff;
}

html:not(.dark) .brand {
  color: #d20000;
}