:root {
  --bg: #0b0f19;
  --fg: #e5e7eb;
  --muted: #9ca3af;
  --accent: #6366f1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, Ubuntu, sans-serif;
}

/* Back link styling */
.back-link {
  position: absolute;
  top: 2rem;
  left: 2rem;
  color: var(--muted);
  font-size: 1rem;
  text-decoration: none;
  padding: 0.5rem 0;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--accent);
}

.wrapper {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;     
  text-align: center;      
  padding: 48px 24px;
}

.content {
  max-width: 900px;
}

h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--muted);
}

footer {
  margin-top: 3rem;
}

footer p {
  font-size: 0.9rem;
  color: var(--muted);
}

/* Mobile responsiveness for back link */
@media (max-width: 640px) {
  .back-link {
    top: 1.5rem;
    left: 1.5rem;
    font-size: 0.95rem;
  }