:root {
  --color-primary: #4F46E5;
  --color-primary-hover: #4338CA;
  --color-surface-light: #F8FAFC;
  --color-surface-dark: #0F172A;
  --color-verified: #2563EB;
  --color-anonymous: #0D9488;
  --color-notice-bg: #CCFBF1;
  --color-notice-text: #0F766E;
  --color-danger: #DC2626;
  --color-text-primary: #1E293B;
  --color-text-secondary: #64748B;
  --color-border: #E2E8F0;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-surface-light: #1E293B;
    --color-text-primary: #F1F5F9;
    --color-text-secondary: #94A3B8;
    --color-border: #334155;
  }
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  background-color: var(--color-surface-light);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--color-text-primary);
  font-weight: 600;
}

p {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: transparent;
  padding: 0;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text-primary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}