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

html {
  font-family: var(--sm-font-sans);
  font-size: 16px;
  line-height: 1.5;
  background-color: var(--sm-bg-canvas);
  color: var(--sm-text-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.sm-dark-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--sm-bg-canvas);
  color: var(--sm-text-primary);
  overflow-x: hidden;
}

:focus-visible {
  outline: 2px solid var(--sm-color-primary);
  outline-offset: 3px;
  border-radius: var(--sm-radius-sm);
}

.sm-screen-reader-text {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.sm-skip-link {
  position: absolute;
  top: -100px;
  left: var(--sm-space-4);
  z-index: 9999;
  background-color: var(--sm-color-primary);
  color: var(--sm-text-primary);
  padding: var(--sm-space-3) var(--sm-space-6);
  border-radius: var(--sm-radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--sm-transition-fast);
}

.sm-skip-link:focus {
  top: var(--sm-space-4);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--sm-text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

p {
  color: var(--sm-text-secondary);
  line-height: 1.65;
}

ul, ol {
  list-style: none;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
  background: transparent;
  border: none;
}

button {
  cursor: pointer;
}

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