/* =========================================================================
   base.css — reset, root typography, base elements
   Load after tokens.css
   ========================================================================= */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-padding-top: 6rem; /* sticky-nav offset for anchors */
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  font-weight: 400;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, picture, svg, video, canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

svg { fill: currentColor; }

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

button { background: none; border: 0; cursor: pointer; }

a {
  color: var(--green-600);
  text-decoration: none;
  text-underline-offset: 0.18em;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { color: var(--jute-deep); }

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

/* ---- Headings: display serif -------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 460;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-optical-sizing: auto;
  color: var(--fg);
  text-wrap: balance;
}
h1 { font-size: var(--text-5xl); font-weight: 420; }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); letter-spacing: -0.01em; }
h4 { font-size: var(--text-lg); }

p { text-wrap: pretty; }

strong, b { font-weight: 600; }

::selection { background: var(--jute); color: var(--forest-900); }

/* ---- Focus visibility --------------------------------------------- */
:focus { outline: none; }
:focus-visible {
  outline: 2.5px solid var(--focus);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}
.on-dark :focus-visible,
.site-footer :focus-visible { outline-color: var(--jute-bright); }

/* ---- Utility ------------------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  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;
  left: var(--space-4);
  top: -100%;
  z-index: var(--z-overlay);
  background: var(--forest);
  color: var(--cream);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: var(--space-4); color: var(--cream); }

/* Reduced motion: cut all animation/transition */
@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;
  }
}