:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-text: #ffffff;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --color-success: #15803d;
  --color-error: #dc2626;
  --color-accent: #0ea5e9;

  --font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius: 14px;
  --radius-small: 10px;
  --radius-large: 20px;

  --shadow-small: 0 1px 2px rgba(15, 23, 42, .05);
  --shadow-medium: 0 8px 30px rgba(15, 23, 42, .08);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-family);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease;
}

button:active {
  transform: translateY(1px);
}

:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .22);
  outline-offset: 2px;
}

::selection {
  background: rgba(37, 99, 235, .16);
}