:root {
  --md-primary: #43ff8e;
  --md-accent: #ff7043;
  --md-bg: #121212;
  --md-surface: #1e1e1e;
  --md-text: #e0e0e0;
  --md-border-radius: 0.75rem;
  --md-font: 'Roboto', sans-serif;
  --sidebar-width: 260px;
  --topbar-height: 64px;
  --transition-speed: 0.3s;
  --shadow-default: 0 2px 4px rgba(0,0,0,0.4);
  --overlay-bg: rgba(255,255,255,0.08);
}

* { 
  box-sizing: border-box; 
}

html, body {
  margin: 0;
  height: 100%;
  font-family: var(--md-font);
  background: var(--md-bg);
  color: var(--md-text);
  line-height: 1.6;
}

main {
  max-width: 900px;
  padding: 2rem;
}

main h2 {
  color: var(--md-primary);
}

footer {
  text-align: center;
  padding: 2rem;
  color: #aaa;
  font-size: 0.9rem;
}