/* Base layer: reset, document typography, focus rings, motion prefs.
 * No component rules live here (those are in components.css). Tokens come
 * from tokens.css, which must be linked before this file.
 */

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

html {
  -webkit-text-size-adjust: 100%;
}

/* Any author `display` beats the UA rule for [hidden], so state it once here
 * and let component rules set display freely. */
[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0;
}

p {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

a {
  color: var(--teal);
}

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

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

/* ---- Focus: always visible, high contrast (§15.6) ---- */
:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--teal);
  color: var(--on-dark);
  border-radius: var(--radius-sm);
  transform: translateY(-150%);
  transition: transform var(--transition-fast);
  z-index: 100;
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---- Screen-reader-only utility ---- */
.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;
}

/* ---- Respect reduced motion everywhere (§15.6) ---- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}