*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-heading);
  line-height: 1.2;
  font-weight: 700;
}

::selection {
  background: rgba(30, 64, 175, 0.4);
  color: #fff;
}

/* Skip navigation link */
.skip-nav {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 600;
  font-size: var(--text-sm);
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-nav:focus {
  top: 0;
}

/* Focus styles for keyboard navigation */
*:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}