/* SetFile — base.css
   Reset, base typography, base elements, accessibility primitives. */

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

html {
  font-size: var(--font-size-root);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  transition: background-color var(--transition-theme), color var(--transition-theme);
}

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

h1,
h2,
h3,
h4 {
  margin: 0 0 var(--space-4) 0;
  line-height: var(--line-height-tight);
  font-weight: 700;
  color: var(--color-text-primary);
  text-wrap: balance;
}

h1 {
  font-size: var(--fs-h1);
}
h2 {
  font-size: var(--fs-h2);
}
h3 {
  font-size: var(--fs-h3);
}
h4 {
  font-size: var(--fs-h4);
}

p {
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text-secondary);
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

/* ---- Focus ---- */
:focus {
  outline: none;
}

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

/* ---- Accessibility utilities ---- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  background: var(--color-cta-bg);
  color: var(--color-text-on-accent);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-3);
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}