:root,
[data-theme="dark"] {
  --bg-base: #121214;
  --surface-primary: #1e1e24;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-primary: #6366f1;
  --accent-hover: #4f46e5;
  --border-default: rgba(255,255,255, 0.05);
  --border-strong: rgba(255,255,255, 0.1);
  --radius-lg: 16px;
  --radius-md: 8px;
  --font-sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', 'Menlo', monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100svh;
  padding: clamp(16px, 5vw, 32px);
}

.content {
  text-align: center;
  max-width: 480px;
  padding: 0 8px;
}

h1 {
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 6vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin: 0 0 12px;
  color: var(--text-primary);
  line-height: 1.2;
}

p {
  margin: 0;
  font-size: clamp(0.875rem, 2.5vw, 1rem);
}

.accent {
  color: var(--accent-primary);
}

footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: clamp(8px, 3vw, 16px);
  text-align: center;
  font-size: clamp(0.625rem, 1.5vw, 0.75rem);
  color: var(--text-muted);
}