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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.18;
}

p { color: var(--color-text-secondary); }
a { color: var(--color-primary-600); }
a:hover { color: var(--color-primary-700); }
img { height: auto; max-width: 100%; }

:focus-visible {
  border-radius: var(--radius-sm);
  outline: 3px solid rgba(79, 70, 229, 0.3);
  outline-offset: 3px;
}

::selection { background: var(--color-primary-100); color: var(--color-primary-900); }

.sf-skip-link {
  background: var(--color-primary-700);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  color: #fff;
  left: var(--space-4);
  padding: var(--space-3) var(--space-4);
  position: fixed;
  top: -100px;
  z-index: 10000;
}

.sf-skip-link:focus { top: 0; color: #fff; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}